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CN111348827A - LED ultraviolet lamp and preparation method of ultraviolet light transmitting glass tube used by same - Google Patents

LED ultraviolet lamp and preparation method of ultraviolet light transmitting glass tube used by same Download PDF

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Publication number
CN111348827A
CN111348827A CN202010239485.5A CN202010239485A CN111348827A CN 111348827 A CN111348827 A CN 111348827A CN 202010239485 A CN202010239485 A CN 202010239485A CN 111348827 A CN111348827 A CN 111348827A
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ultraviolet
glass tube
transmitting glass
parts
mixed material
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郭朋鑫
甘彩英
刘春渡
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CH Lighting Technology Co Ltd
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CH Lighting Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/11Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
    • C03C3/111Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing nitrogen
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08Radiation
    • A61L2/10Ultraviolet radiation
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B1/00Preparing the batches
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/04Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles

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  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
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Abstract

The invention provides an LED ultraviolet lamp and a preparation method of an ultraviolet light transmitting glass tube used by the LED ultraviolet lamp, wherein the ultraviolet light transmitting glass tube used by the LED ultraviolet lamp comprises the following raw materials in parts by weight: SiO 2265-70 parts of NiO, 1-2 parts of NiO, 0.4-1.1 parts of CoO and K20.9-1.1 parts of O and Fe2O30.2-0.3 part of NaNO33-16 parts of Ca (NO)3)23-16 parts. The prepared ultraviolet light transmitting glass tube has light transmittance of more than 80% for ultraviolet rays with spectrum of more than 300nm, and can effectively cut off light rays with spectrum of more than 400 nm.

Description

LED ultraviolet lamp and preparation method of ultraviolet light transmitting glass tube used by same
Technical Field
The invention belongs to the technical field of optics, relates to an LED ultraviolet lamp, and particularly relates to an LED ultraviolet lamp and a preparation method of an ultraviolet light transmitting glass tube used by the LED ultraviolet lamp.
Background
Ultraviolet (UV) is a segment of electromagnetic radiation, the electromagnetic spectrum includes radio waves, infrared rays, visible light, ultraviolet rays, X rays, gamma rays, etc., the ultraviolet is only a narrow segment of the electromagnetic spectrum, the wavelength range is a spectrogram within 400nm, the ultraviolet can be divided into long-wavelength ultraviolet (UV-a), medium-wavelength ultraviolet (UV-B) and short-wavelength ultraviolet (UV-C), and the shorter the wavelength of the ultraviolet, the higher the energy of the ultraviolet.
The wavelength of the long-wavelength UV-A is between 320-400nm, the glass has higher traditional capability, can easily penetrate through the glass, the ultraviolet energy of the wavelength band is equivalent to most of chemical bond energy, the photochemical reaction is easily initiated, and the UV-A is usually used for photocuring; the wavelength of the medium-wave UV-B is between 280-320nm, the penetrating power is weak, the glass has strong absorption to the medium-wave UV-B, and the sunlight contains abundant UV-A and UV-B. The wavelength of the short-wave UV-C is between 200-280nm, and the ozone layer has strong absorption to the short-wave UV-C, so that the UV-C in the sunlight is absorbed by the ozone layer before reaching the ground, and the UV-C organism has extremely strong destructive effect and can kill bacteria and viruses, thereby being commonly used for sterilization and disinfection.
The shorter the wavelength of the ultraviolet ray, the higher the energy, and the more easily functions when used in the fields of sterilization, disinfection, etc., but the shorter the wavelength, the more easily absorbed by the lamp tube, the lower the transmittance of the ultraviolet ray, and further the lower the power of the ultraviolet ray.
CN 106277758A discloses a blue-black glass tube for an electric light source and a preparation method thereof, wherein the blue-black glass tube comprises the following raw materials in percentage by mass: 0.1 to 5 percent of aluminum oxide; 1-10% of potassium oxide; 0.1 to 5 percent of sodium oxide; 0.1-3% of lithium oxide; 1-10% of barium oxide; 0.1 to 5 percent of magnesium oxide; 0.1 to 5 percent of zinc oxide; 0.1-3% of nickel oxide; 0.1-2% of cobalt oxide; 0.1 to 3 percent of boron oxide; 0.1 to 1 percent of cadmium oxide; 0.1-3% of cerium oxide; 0.1 to 3 percent of zirconia; 0.01 to 0.1 percent of ferric oxide, 0.1 to 1 percent of niobium trioxide and the balance of silicon dioxide. The blue-black glass tube has higher transmittance for ultraviolet light with the wavelength of 320-400nm, while the ultraviolet light for ultraviolet sterilization has the wavelength of 254nm and has lower transmittance.
CN 107108333 a discloses a low CTE glass with high uv transmission and resistance to sunburn comprising alkali metal oxide free components: 50-75 mol% SiO23-20 mol% of Al2O35-20 mol% of B2O30-15 mol% MgO, 0-15 mol% CaO, 0-15 mol% BaO, wherein MgO + CaO + SrO + BaO equals 3-25 mol%; the glass carrier lens prepared from the glass has high ultraviolet transmittance at the wavelength of 248nm and 308nm and good light fastnessHigh performance and long service life. However, the UV transmittance at 248nm is only 38.22% at the highest.
Therefore, the ultraviolet light transmitting glass which has high ultraviolet light transmittance of 248nm and can reduce the light transmittance of more than 360nm is provided, and has important significance for the development of ultraviolet light sterilization and disinfection technology.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an LED ultraviolet lamp and a preparation method of an ultraviolet light transmitting glass tube used by the LED ultraviolet lamp, wherein the ultraviolet light transmitting glass tube has a light transmittance of more than 80% for ultraviolet rays with a spectrum of more than 300nm and can effectively cut off light rays with a spectrum of more than 400 nm.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an LED ultraviolet lamp, wherein the ultraviolet-transmitting glass tube used by the LED ultraviolet lamp comprises the following raw materials in parts by weight:
Figure BDA0002432079890000021
Figure BDA0002432079890000031
the raw material of the ultraviolet light transmitting glass comprises SiO in parts by weight265 to 75 parts, for example 65 parts, 66 parts, 67 parts, 68 parts, 69 parts or 70 parts, but are not limited to the cited values, and other values not cited within the numerical range are equally applicable, preferably 68 parts. SiO 22Is the main component of quartz glass, is an important glass-forming oxide, in the form of silica tetrahedrons [ SiO ]4]The structural elements of (A) form an irregular continuous network, which becomes the framework of glass, SiO2Can reduce the thermal expansion coefficient and improve the thermal stability, chemical stability, softening temperature, heat resistance, hardness, mechanical strength, viscosity and ultraviolet transmittance of the obtained glass.
The amount of NiO is 1 to 2 parts by weight, and may be, for example, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts or 2 parts, but is not limited to the above-mentioned values, and other values not shown in the numerical range are also applicable, and preferably 1.2 to 1.8 parts, and more preferably 1.5 parts.
The CoO may be present in an amount of 0.4 to 1.1 parts by weight, for example, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part or 1.1 part, but is not limited to the above-mentioned values, and other values not shown in the numerical ranges are also applicable, and preferably 0.6 to 1 part, and more preferably 0.8 part.
According to the invention, the weight parts of NiO is set to be 1-2 parts, the weight parts of CoO is set to be 0.4-1.1 parts, and the prepared ultraviolet light transmitting glass can effectively cut off light rays with the wavelength of more than 360nm through the matching of NiO and CoO.
Said K2The amount of O is 0.9 to 1.1 parts by weight, and may be, for example, 0.9 part, 1 part or 1.1 parts by weight, but is not limited to the above-mentioned values, and other values not shown in the numerical ranges are also applicable, and 1 part is preferable.
Said Fe2O3The amount of the (B) is 0.2 to 0.3 part, for example, 0.2 part, 0.21 part, 0.22 part, 0.23 part, 0.24 part, 0.25 part, 0.26 part, 0.27 part, 0.28 part, 0.29 part or 0.3 part, but not limited to the above-mentioned values, and other values not shown in the numerical ranges are also applicable, and preferably 0.22 to 0.28 part, and more preferably 0.25 part.
The invention is realized by adding K2The weight portion of O is set to be 0.9-1.1 portion, Fe2O3Is set to 0.2-0.3 parts by weight, by K2O and Fe2O3The prepared ultraviolet transmitting glass has higher transmittance to 254nm ultraviolet rays by the matching of the components.
The NaNO3The amount of (b) is 4 to 12 parts by weight, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts or 12 parts, but is not limited to the above-mentioned values, and other values not shown in the numerical ranges are also applicable, preferably 6 to 10 parts, and more preferably 8 parts.
The Ca (NO)3)2Is 4 to 12 parts by weight, for exampleThe amount is 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts or 12 parts, but is not limited to the above-mentioned values, and other values not shown in the numerical ranges are also applicable, and preferably 6 to 10 parts, and more preferably 8 parts.
The invention is realized by adding NaNO3The weight portion of (A) is set to 4-12 parts, Ca (NO) is added3)2Is set to 4-12 parts by weight, with NaNO3With Ca (NO)3)2Mutually matched to ensure that SiO in the ultraviolet light transmitting glass raw material2The raw materials can be normally melted when the weight portion is 65-70 portions, the expansion coefficient of the mixed raw materials is improved, the melted material liquid can normally draw the lamp tube, and the rate of finished products of the lamp tube is ensured.
Preferably, the NaNO is calculated by weight parts3With Ca (NO)3)2The total amount of the (B) is 16 parts or less, for example, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts or 16 parts, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
Preferably, the NaNO3With Ca (NO)3)2The mass ratio of (1-3) to (1-3) may be, for example, 1:1, 1:2, 1:3, 2:1, 2:3, 3:1 or 3:2, but is not limited to the enumerated values, and other values not enumerated within the numerical range are also applicable.
Preferably, the outer diameter of the ultraviolet germicidal lamp tube is 7-40mm, such as 7mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm or 40mm, but not limited to the recited values, and other values not recited in the numerical range are also applicable; the wall thickness is from 0.7 to 1.3mm, and may be, for example, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm or 1.3mm, but is not limited to the values listed, and other values not listed in the numerical range are equally applicable.
Preferably, the ultraviolet light transmitting glass tube is a blue black glass tube.
In a second aspect, the present invention provides a method for preparing the ultraviolet light transmitting glass of the LED ultraviolet lamp according to the first aspect, the method comprising the following steps:
(1) according toNiO, CoO and K are mixed according to formula ratio2O、NaNO3With Ca (NO)3)2Performing ball milling to obtain a coarse mixed material;
(2) mixing SiO according to the formula amount2、Fe2O3Adding a solvent into the coarse mixed material obtained in the step (1) and then performing ball milling to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2), and cooling in a mould to obtain the ultraviolet light transmitting glass.
Preferably, the ball milling time in step (1) is 30-60min, such as 30min, 35min, 40min, 45min, 50min, 55min or 60min, but not limited to the recited values, and other values not recited in the range of values are also applicable.
Preferably, the ball-milling in step (1) has a ball-to-material ratio of (3-6):1, such as 3:1, 4:1, 5:1 or 6:1, but not limited to the recited values, and other values not recited in the numerical range are equally applicable.
Preferably, the solvent in the step (2) is ethanol, and the addition amount of the solvent is the immersion of the crude mixed material.
Preferably, the ball milling time in step (2) is 20-40min, such as 20min, 25min, 30min, 35min or 40min, but not limited to the recited values, and other values not recited in the range of values are also applicable.
Preferably, the ball-milling in step (2) has a ball-to-material ratio of (3-6):1, such as 3:1, 4:1, 5:1 or 6:1, but not limited to the recited values, and other values not recited in the numerical range are equally applicable.
Preferably, the melting temperature in step (3) is 1600-; the melting time is 14-18h, for example 14h, 15h, 16h, 17h or 18h, but is not limited to the values listed, and other values not listed in the numerical range are equally applicable.
As a preferable technical solution of the method according to the second aspect of the present invention, the preparation method comprises the steps of:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 30-60min under the condition that the ball-material ratio is (3-6) to 1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 20-40min at a ball-to-material ratio (3-6):1 to obtain a mixed material;
(3) melting the mixture obtained in the step (2) at 1600 ℃ and 1900 ℃ for 14-18h, and cooling in a mold to obtain the ultraviolet light transmitting glass.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through selecting the raw materials of the specific LED ultraviolet lamp glass tube, the prepared blue-black ultraviolet-transmitting glass tube has a light transmittance of more than 80% to ultraviolet light with a wavelength of more than 300nm, and can effectively cut off the ultraviolet light with a wavelength of more than 400 nm.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Example 1
The embodiment provides a preparation method of an ultraviolet light transmitting glass tube for an LED ultraviolet lamp, wherein the outer diameter of the ultraviolet light transmitting glass tube is 20mm, the wall thickness of the ultraviolet light transmitting glass tube is 1mm, and the ultraviolet light transmitting glass tube comprises the following raw materials in parts by weight:
Figure BDA0002432079890000071
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet light transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet light transmitting glass tube.
Example 2
The embodiment provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the outer diameter of the ultraviolet-transmitting glass tube is 20mm, the wall thickness of the ultraviolet-transmitting glass tube is 1mm, and the ultraviolet-transmitting glass tube comprises the following raw materials in parts by weight:
Figure BDA0002432079890000072
Figure BDA0002432079890000081
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 45min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling on the coarse mixed material for 25min at a ball-to-material ratio of 4:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1700 ℃, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Example 3
The embodiment provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the outer diameter of the ultraviolet-transmitting glass tube is 20mm, the wall thickness of the ultraviolet-transmitting glass tube is 1mm, and the ultraviolet-transmitting glass tube comprises the following raw materials in parts by weight:
Figure BDA0002432079890000082
Figure BDA0002432079890000091
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 40min under the condition that the ball material ratio is 5:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 35min at a ball-to-material ratio of 4:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1800 ℃ for 15h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Example 4
The embodiment provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the outer diameter of the ultraviolet-transmitting glass tube is 20mm, the wall thickness of the ultraviolet-transmitting glass tube is 1mm, and the ultraviolet-transmitting glass tube comprises the following raw materials in parts by weight:
Figure BDA0002432079890000092
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 60min under the condition that the ball material ratio is 3:1, and a coarse mixed material is obtained;
(2) Mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 20min at a ball-to-material ratio of 6:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1600 ℃ for 18h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Example 5
The embodiment provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the outer diameter of the ultraviolet-transmitting glass tube is 20mm, the wall thickness of the ultraviolet-transmitting glass tube is 1mm, and the ultraviolet-transmitting glass tube comprises the following raw materials in parts by weight:
Figure BDA0002432079890000101
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 30min under the condition that the ball material ratio is 6:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 40min at a ball-to-material ratio of 3:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1900 ℃ for 14h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 1
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000111
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 2
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000121
the preparation method comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 3
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000122
Figure BDA0002432079890000131
the preparation method comprises the following steps:
(1) NiO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 4
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000132
the preparation method comprises the following steps:
(1) mixing CoO and K according to the formula amount2O、NaNO3With Ca (NO)3)2Ball, ballBall milling is carried out for 50min under the condition that the material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 5
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000141
the preparation method comprises the following steps:
(1) mixing CoO and K according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 6
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000151
the preparation method comprises the following steps:
(1) mixing CoO and NaNO according to the formula amount3With Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube.
Comparative example 7
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000161
the preparation method comprises the following steps:
(1) mixing CoO and K according to the formula amount2O and NaNO3Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing the mixture into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube, wherein the yield is low.
Comparative example 8
The comparative example provides a preparation method of an ultraviolet-transmitting glass tube for an LED ultraviolet lamp, the ultraviolet-transmitting glass tube has an outer diameter of 20mm and a wall thickness of 1mm, and comprises the following raw materials in parts by weight:
Figure BDA0002432079890000162
Figure BDA0002432079890000171
the preparation method comprises the following steps:
(1) mixing CoO and K according to the formula amount2O and Ca (NO)3)2Ball milling is carried out for 50min under the condition that the ball material ratio is 4:1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), and performing ball milling for 30min at a ball-to-material ratio of 5:1 to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2) at 1750 ℃ for 16h, feeding the mixture after solute into horizontal tube drawing forming equipment, and drawing the mixture into an ultraviolet-transmitting glass tube with required wall thickness and outer diameter to obtain the ultraviolet-transmitting glass tube, wherein the yield is low.
The ultraviolet transmittance of the ultraviolet-transmitting glass tubes prepared in examples 1 to 5 and comparative examples 1 to 8 was measured using a 320nm LED light source and a 420nm LED light source, and the measurement was performed using an optical power tester, and the results are shown in Table 1.
TABLE 1
Figure BDA0002432079890000172
Figure BDA0002432079890000181
In conclusion, when the ultraviolet light transmitting glass prepared according to the formula amount is used as an ultraviolet light sterilizing lamp tube, the ultraviolet light transmitting glass has the light transmittance of more than 80% for ultraviolet light with the spectrum of more than 300nm, and can effectively cut off light rays with the spectrum of more than 400 nm.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An LED ultraviolet lamp is characterized in that the raw materials of an ultraviolet light transmitting glass tube used by the LED ultraviolet lamp comprise:
Figure FDA0002432079880000011
2. the LED ultraviolet lamp of claim 1, wherein the ultraviolet light transmitting glass tube comprises the following raw materials in parts by weight:
Figure FDA0002432079880000012
3. the LED uv lamp according to claim 1 or 2, wherein the NaNO is in parts by weight3With Ca (NO)3)2The total weight portion of the components is less than or equal to 16 portions.
4. The LED UV lamp of any one of claims 1 to 3, wherein the NaNO is3With Ca (NO)3)2The mass ratio of (1-3) to (1-3).
5. The LED ultraviolet lamp according to any one of claims 1 to 4, wherein the ultraviolet-transmitting glass tube comprises the following raw materials in parts by weight:
Figure FDA0002432079880000021
6. the LED UV lamp of any one of claims 1 to 5, wherein the UV transparent glass tube has an outer diameter of 7 to 40mm and a wall thickness of 0.7 to 1.3 mm;
preferably, the ultraviolet light transmitting glass tube is a blue black glass tube.
7. The method for preparing the ultraviolet-transmitting glass of the LED ultraviolet lamp according to any one of claims 1 to 6, wherein the method for preparing the ultraviolet-transmitting glass comprises the following steps:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Performing ball milling to obtain a coarse mixed material;
(2) mixing SiO according to the formula amount2、Fe2O3Adding a solvent into the coarse mixed material obtained in the step (1) and then performing ball milling to obtain a mixed material;
(3) and (3) melting the mixture obtained in the step (2), and cooling in a mould to obtain the ultraviolet light transmitting glass tube.
8. The preparation method according to claim 7, wherein the ball milling time in the step (1) is 30-60 min;
preferably, the ball-milling ratio of the ball mill in the step (1) is (3-6): 1.
9. The production method according to claim 7 or 8, wherein the solvent in the step (2) is ethanol, and the solvent is added in an amount to immerse the raw mixed material;
preferably, the ball milling time in the step (2) is 20-40 min;
preferably, the ball-milling in the step (2) has a ball-to-material ratio of (3-6) to 1;
preferably, the melting temperature in the step (3) is 1600-1900 ℃, and the melting time is 14-18 h.
10. The method according to any one of claims 7 to 9, characterized by comprising the steps of:
(1) NiO, CoO and K are mixed according to the formula amount2O、NaNO3With Ca (NO)3)2Ball milling is carried out for 30-60min under the condition that the ball-material ratio is (3-6) to 1, and a coarse mixed material is obtained;
(2) mixing SiO according to the formula amount2、Fe2O3Adding ethanol into the coarse mixed material obtained in the step (1), immersing the coarse mixed material, and performing ball milling for 20-40min at a ball-to-material ratio of (3-6) to 1 to obtain a mixed material;
(3) melting the mixture obtained in the step (2) at 1600 ℃ and 1900 ℃ for 14-18h, and cooling in a mold to obtain the ultraviolet light transmitting glass tube.
CN202010239485.5A 2020-03-30 2020-03-30 LED ultraviolet lamp and preparation method of ultraviolet light transmitting glass tube used by same Pending CN111348827A (en)

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