CN1314052C - Rare earth modified full non-lead X-ray screen rubber - Google Patents
Rare earth modified full non-lead X-ray screen rubber Download PDFInfo
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Abstract
本发明涉及一种稀土改性全无铅X射线屏蔽橡胶。将无机稀土的一部分进行表面改性处理，另一部分进行有机化反应处理，制备有机稀土盐，二者再以一定比例进行配合加入橡胶中，从而得到改性全无铅X射线屏蔽橡胶，使材料的屏蔽性能、力学性能都达到理想的效果。可广泛用于医用诊断X射线光机、X射线衍射仪、电子显微镜的发射器及其它伴有X射线产生的场合工作人员的防护。
The invention relates to a rare earth modified all-lead-free X-ray shielding rubber. Part of the inorganic rare earth is subjected to surface modification treatment, and the other part is subjected to organic reaction treatment to prepare organic rare earth salt, and the two are added to the rubber in a certain proportion to obtain a modified lead-free X-ray shielding rubber. The shielding performance and mechanical properties have achieved ideal results. It can be widely used in medical diagnostic X-ray machines, X-ray diffractometers, emitters of electron microscopes and the protection of workers in other occasions accompanied by X-ray generation.
Description
Technical field:
The present invention relates to a kind of rare earth modified full non-lead X-ray screen rubber.
Background technology:
The present invention is that polymer composite is used in the high shielding properties of preparation, thin layer X ray shielding unleaded, that light weight is soft, is used for transmitter and other protection with the occasion staff of X ray generation of medical diagnosis X radial ray machine, X-ray diffractometer, electron microscope.
The development of ray protection material, producing and apply, is one of emphasis of civilian healthy prevention work, also is the important component part of nuclear energy development field, military domain radiation protection.State's inner macromolecule radiation proof material is mainly based on plumbous rubber.States such as America and Europe, Japan have succeeded in developing novel thermoplastic elastomer composite material, and this compound substance has the physical and mechanical properties height under the condition of identical ratio lead equivalent, surface property is good, ageing-resistant, excellent properties such as dimensionally stable can also the heat seal ready-made clothes.Under the condition of identical weight,, can also improve the serviceable life and the shielding property of material to a certain extent if use polyurethane as base material.Develop the associated production technology abroad, prepared very thin sheet material (minimum thickness can reach 0.3mm).The personal protection clothing of the compound manufacturing of single or multiple lift is quite soft.This based sheet mainly is used to make radiation proof clothings such as protection jacket, vest, integral protection clothing, its shortcoming be discrete state material still based on lead, and cost an arm and a leg.
Usually its energy of most photons of the medical diagnosis X radial that is produced by the following tube voltage of 120KVp is lower than 88.0KeV.At present, the discrete state material of domestic and international medical X-ray shielding material is still based on lead, barium and oxide thereof.But since plumbous in the ray scope of 40-88keV, absorb a little less than, plumbous in addition, the barium material is big to human body harm, so people attempt usually to replace lead to make compound substance with K layer absorption edge other yuan between 40-88keV.
The foreign study person successively attempts having used elements such as Cu, Sn, Sb, I, Ba.The K layer of element Cu, Sn, Sb and I absorbs energy and is respectively 9.0,29.2,30.5 and 33.1keV, and is far away apart from the lower limit of weak uptake zone, all can not finely play the effect that remedies the weak uptake zone of Pb.Element B a chemical property is active, can not can only use with compound form with simple substance form.In the compound of Ba, that the shared therein percentage by weight of Ba element is the highest is BaO, but the alkalescence of BaO is very strong, and chemical toxicity is very big, and costs an arm and a leg, and has reduced its use value.If select BaSO for use
4Though, can overcome the chemical toxicity of Ba, strengthen its chemical stability, because element B a accounts for percentage by weight low excessively (59%) in this compound, make the shield effectiveness variation.Therefore, up at present, generally still based on lead.
Russ P RU2054439, RU2028331 disclose the rubber X-ray-preventing compound substance with the modification of inorganic rare earth oxide filler, but because inorganic rare earth (rare earth oxide) and rubber matrix is compatible relatively poor, therefore at itself and polymeric matrix the space appears easily at the interface, these spaces will be easy to be passed through when high-energy ray shines, even the phenomenon that ray occurs leaking, the shielding homogeneous performance of material also is difficult to guarantee, so the stability of material also is difficult to control.
Summary of the invention:
The purpose of this invention is to provide a kind of rare earth modified full non-lead X-ray screen rubber, the part of inorganic rare earth is carried out surface modification treatment, another part reaction treatment that organises prepares organic RE salt, the two cooperates with certain proportion and adds in the rubber, thereby obtain modified full non-lead X-ray screen rubber, make the shielding properties of material, mechanical property all reach desirable effect.
A kind of rare earth modified full non-lead X-ray screen rubber, it is formed and parts by weight are:
Rubber 50-100
Zinc paste 1-5
Stearic acid 1-10
Rare earth organic complex 20-600
Inorganic rare earth compound 20-700
Silane coupling agent 0.5-3
Softening agent 2-30
Crosslinking chemical 2-15
Promoter 0.5-3
Used rubber comprises natural rubber and synthetic rubber, and synthetic rubber mainly contains ethylene-propylene-diene rubber, styrene-butadiene rubber, nitrile rubber, ACM, hydrogenated nitrile-butadiene rubber etc.
The inorganic rare earth compound is rare earth oxide or the rare earth carbonate except the promethium.
Silane coupling agent is two (triethoxysilylpropyl) tetrasulfides (Si69), vinyltriethoxysilane (Al51) or gamma-aminopropyl-triethoxy-silane (KH550), vinyl three-(2-methoxy ethoxy) silane (Al72).
Softening agent is petroleum line softener (paraffin oils, aromatic naphtha, mechanical wet goods), synthetic plastifier (dibutyl phthalate, dioctyl phthalate, epoxy soybean wet goods).
Crosslinking chemical is that Sulfur, superoxide are (as cumyl peroxide-DCP, benzoyl peroxide-BPO), phenolics (as to the tert-octyl phenol formaldehyde resin).
Promoter is thiazole accelerator, as 2-benzothiazolyl mercaptan (captax), dibenzothiazyl disulfide (altax), sulfenamide type accelerators, as N-cyclohexyl-2-[4-morpholinodithio sulfenamide (accelerant CZ), thiuram type accelerator, as tetramethylthiuram disulfide (promoter TT), diphenylguanidine (diphenylguanidine).
Used rare earth organic complex is acrylic rare earth salt, methacrylic acid rare-earth salts or their mixture of 16 kinds of lanthanide series except the promethium.Its preparation method can be represented with following reaction equation:
Wherein Re is the rare earth element except the promethium, and HAA is acrylic or methacrylic acid.
Get a certain amount of rare earth oxide, add the deionized water of 2 times of rare earth oxide weight, add rare earth oxide molar weight (excessive) 1.5-2.5 acrylic acid (or methacrylic acid) doubly, the water-bath heating, temperature is controlled at 60-90 ℃, stirring reaction 1-3 hour, filtered while hot, with the filtrate decompression distillation, steam and remove most of water and acrylic acid, to there being crystal to occur, adding absolute ethyl alcohol cools off to such an extent that precipitate, be washed till neutrality with absolute ethyl alcohol, be dried to constant weight in 40 ℃ of left and right sides baking ovens, obtain product.
The preparation of rare earth modified full non-lead X-ray screen rubber of the present invention does not need special equipment, uses rubber tooling commonly used such as mill, Banbury mixer, and processing temperature normal temperature gets final product.
At normal temperatures, add rubber raw rubber in the Banbury mixer, under rotor speed 60-80 rev/min shear rate, add zinc paste, stearic acid successively, mixed 1-2 minute; Add promoter again, mixed 1-2 minute; Add rare earth organic complex in batches, mixed 5-8 minute; Add the inorganic rare earth compound in batches, during simultaneously add softening agent in batches, mixed 10-20 minute, add silane coupling agent then, mixed 2-4 minute; At last, place mill to add crosslinking chemical, mix after 1-2 minute, make compound substance.
The present invention also can suitably dose other usual auxiliaries according to the difference of used rubber.
The mishmetal content that rare earth modified full non-lead X-ray screen rubber of the present invention adds is big, and reached high dispersive and good interface compatibility, make X ray shielding properties, the mechanical property of material all reach desirable effect (data in specifically seeing the following form).Can be widely used in transmitter and other protection of medical diagnosis X radial ray machine, X-ray diffractometer, electron microscope with the occasion staff of X ray generation.China's rare earth resources is abundant, and numerous in variety, therefore, rare earth modified full non-lead X-ray screen rubber of the present invention has good application prospects.
Below in conjunction with drawings and Examples the present invention is further described.
Description of drawings:
The scanning electron microscope of the compound substance that Fig. 1 embodiment 6 obtains (SEM) photo
Fig. 2 only adds scanning electron microscope (SEM) photo of the X ray screen rubber of rare earth oxide
As can be seen from Figure 1, among the embodiment 6, though rare earth large usage quantity, but because organic RE and the good compatibility of polymeric matrix, rare earth compound can be distributed in the rubber base material more equably, and the interfacial adhesion of rare earth and matrix is good, has played good effect to improving shielding properties.In the compound substance that only uses the preparation of inorganic rare earth oxide, there is tangible hole in its interface as can be seen from Figure 2, blocking of ray is acted on weaken, and the shielding homogeneity of material monolithic is a greater impact, and is not desirable X ray shielding material therefore.
Embodiment:
Embodiment 1:
The composition of each component and parts by weight are:
Natural rubber 100
Zinc paste 5
Stearic acid 2
Accelerant CZ 1.5
Acrylic acid gadolinium 20
Acrylic acid neodymium 20
Samarium oxide 150
Gadolinium oxide 150
Si69 1.2
Naphthenic oil 10
Sulfur 3
In Banbury mixer, add 100 parts of (weight portion) natural rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 1.5 parts of accelerant CZs again, mixed 1-2 minute; Add 20 parts of acrylic acid gadoliniums, 20 parts of acrylic acid neodymiums in batches, mixed 5-8 minute; Add 150 parts of 150 parts of samarium oxides and gadolinium oxides in batches, during add 10 parts of naphthenic oils simultaneously in batches, mixed 10-20 minute, add Si691.2 part then, mixed 2 minutes; At last, in mill, add 3 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 2:
The composition of each component and parts by weight are:
Natural rubber 100
Zinc paste 5
Stearic acid 2
Accelerant CZ 1.5
Acrylic acid gadolinium 20
Acrylic acid neodymium 20
Neodymia 150
Europium oxide 150
Si69 1.2
Naphthenic oil 10
Sulfur 3
In Banbury mixer, add 100 parts of (weight portion) natural rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 1.5 parts of accelerant CZs again, mixed 1-2 minute; Add 20 parts of acrylic acid gadoliniums, 20 parts of acrylic acid neodymiums in batches, mixed 5-8 minute; Add 150 parts of 150 parts of neodymia and europium oxides in batches, during add 10 parts of naphthenic oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Si69 then, mixed 2 minutes; At last, in mill, add 3 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 3:
The composition of each component and parts by weight are:
Natural rubber 100
Zinc paste 5
Stearic acid 2
Accelerant CZ 1.5
Acrylic acid europium 20
Acrylic acid samarium 20
Neodymia 150
Terbium oxide 150
Si69 1.2
Naphthenic oil 10
Sulfur 3
In Banbury mixer, add 100 parts of (weight portion) natural rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 1.5 parts of accelerant CZs again, mixed 1-2 minute; Add 20 parts of acrylic acid europiums, 20 parts of acrylic acid samariums in batches, mixed 5-8 minute; Add 150 parts of 150 parts of neodymia and terbium oxides in batches, during add 10 parts of naphthenic oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Si69 then, mixed 2 minutes; At last, in mill, add 3 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 4:
The composition of each component and parts by weight are:
EP rubbers 100
Zinc paste 5
Stearic acid 2
Accelerant CZ 2
Promoter TT 0.2
Acrylic acid samarium 100
Neodymia 300
Samarium oxide 200
Al51 1.2
Paraffin oil 10
Sulfur 6
In Banbury mixer, add 100 parts of (weight portion) EP rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of accelerant CZs and 0.2 part of promoter TT again, mixed 1-2 minute; Add 100 parts of acrylic acid samariums in batches, mixed 5-8 minute; Add 200 parts of 300 parts of neodymia and samarium oxides in batches, during add 10 parts of paraffin oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Al51 then, mixed 2 minutes; At last, in mill, add 6 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 5:
The composition of each component and parts by weight are:
EP rubbers 50
Zinc paste 5
Stearic acid 2
Accelerant CZ 2
Promoter TT 0.2
Acrylic acid gadolinium 100
Europium oxide 300
Samarium oxide 200
Al51 1.2
Paraffin oil 10
Sulfur 6
In Banbury mixer, add 50 parts of (weight portion) EP rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of accelerant CZs and 0.2 part of promoter TT again, mixed 1-2 minute; Add 100 parts of acrylic acid gadoliniums in batches, mixed 5-8 minute; Add 200 parts of 300 parts of europium oxides and samarium oxides in batches, during add 10 parts of paraffin oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Al51 then, mixed 2 minutes; At last, in mill, add 6 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 6:
The composition of each component and parts by weight are:
EP rubbers 50
Zinc paste 5
Stearic acid 2
Accelerant CZ 2
Promoter TT 0.2
Acrylic acid gadolinium 50
Gadolinium oxide 300
Samarium oxide 200
Al51 1.2
Paraffin oil 10
Sulfur 6
In Banbury mixer, add 50 parts of (weight portion) EP rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 5 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of accelerant CZs and 0.2 part of promoter TT again, mixed 1-2 minute; Add 50 parts of acrylic acid gadoliniums in batches, mixed 5-8 minute; Add 200 parts of 300 parts of gadolinium oxides and samarium oxides in batches, during add 10 parts of paraffin oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Al51 then, mixed 2 minutes; At last, in mill, add 6 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 7:
The composition of each component and parts by weight are:
ACM 100
Stearic acid 2
Triethylenetetramine 1.0
Cerous carbonate 200
Acrylic acid europium 50
Europium oxide 200
Terbium oxide 200
KH570 1.5
Dibutyl phthalate 20
Sulfur 2.0
In Banbury mixer, add 100 parts of (weight portion) ACMs under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 2 parts of stearic acid successively, mixed 1-2 minute; Add 1 part of triethylenetetramine again, mixed 1-2 minute; Add 50 parts of acrylic acid europiums in batches, mixed 5-8 minute; Add 200 parts of europium oxides, 200 parts of terbium oxides in batches, during simultaneously add 20 parts of dibutyl phthalates in batches, mixed 10-20 minute, add 1.5 parts of KH570 then, mixed 2 minutes; At last, in mill, add 2 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 8:
The composition of each component and parts by weight are:
ACM 100
Stearic acid 2
Triethylenetetramine 1.0
Praseodymium carbonate 200
Acrylic acid cerium 100
Gadolinium oxide 200
Terbium oxide 200
KH570 1.5
Dibutyl phthalate 20
Sulfur 2.0
In Banbury mixer, add 100 parts of (weight portion) ACMs under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 2 parts of stearic acid successively, mixed 1-2 minute; Add 1 part of triethylenetetramine again, mixed 1-2 minute; Add 100 parts of acrylic acid ceriums in batches, mixed 5-8 minute; Add 200 parts of 200 parts of gadolinium oxides, 200 parts of terbium oxides and praseodymium carbonates in batches, during add 20 parts of dibutyl phthalates simultaneously in batches, mixed 10-20 minute, add 1.5 parts of KH570 then, mixed 2 minutes; At last, in mill, add 2 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 9:
The composition of each component and parts by weight are:
Nitrile rubber 80
Zinc paste 3
Stearic acid 2
Altax 2
Diphenylguanidine 1.0
Methacrylic acid neodymium 20
Europium oxide 200
Gadolinium oxide 100
KH550 2.5
Dioctyl phthalate 30
Sulfur 4
In Banbury mixer, add 100 parts of (weight portion) nitrile rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 3 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of altaxs and 1.0 parts of diphenylguanidines again, mixed 1-2 minute; Add 20 parts of methacrylic acid neodymiums in batches, mixed 5-8 minute; Add 100 parts of 200 parts of europium oxides and gadolinium oxides in batches, during add 30 parts of dioctyl phthalates simultaneously in batches, mixed 10-20 minute, add 2.5 parts of KH550 then, mixed 2 minutes; At last, in mill, add 4 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 10:
The composition of each component and parts by weight are:
Nitrile rubber 80
Zinc paste 3
Stearic acid 2
Altax 2
Diphenylguanidine 1.0
Methacrylic acid europium 40
Neodymia 200
Gadolinium oxide 100
KH550 2.5
Dioctyl phthalate 30
Sulfur 4
In Banbury mixer, add 80 parts of (weight portion) nitrile rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 3 parts of zinc paste, 2 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of altaxs and 1.0 parts of diphenylguanidines again, mixed 1-2 minute; Add 40 parts of methacrylic acid europiums in batches, mixed 5-8 minute; Add 100 parts of 200 parts of neodymia and gadolinium oxides in batches, during add 30 parts of dioctyl phthalates simultaneously in batches, mixed 10-20 minute, add 2.5 parts of KH550 then, mixed 2 minutes; At last, in mill, add 4 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 11:
The composition of each component and parts by weight are:
Hydrogenated nitrile-butadiene rubber 70
Methacrylic acid europium 40
Methacrylic acid praseodymium 60
Europium oxide 300
Gadolinium oxide 400
KH550 2.5
Epoxidized soybean oil 20
Phenolics 15
In Banbury mixer, add 70 parts of (weight portion) hydrogenated nitrile-butadiene rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 60 parts of 40 parts of methacrylic acid europiums and methacrylic acid europiums in batches, mixed 5-8 minute; Add 400 parts of 300 parts of europium oxides and gadolinium oxides in batches, during add 20 parts of epoxidized soybean oils simultaneously in batches, mixed 10-20 minute, add 2.5 parts of KH550 then, mixed 2 minutes; At last, in mill, add 15 parts in phenolics, mix after 1-2 minute, make compound substance.
Embodiment 12:
The composition of each component and parts by weight are:
Hydrogenated nitrile-butadiene rubber 70
Methacrylic acid europium 100
Acrylic acid europium 100
Europium oxide 300
Gadolinium oxide 400
KH550 2.5
Epoxidized soybean oil 20
Phenolics 15
In Banbury mixer, add 70 parts of (weight portion) hydrogenated nitrile-butadiene rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 100 parts of 100 parts of methacrylic acid europiums and acrylic acid europiums in batches, mixed 5-8 minute; Add 400 parts of 300 parts of europium oxides and gadolinium oxides in batches, during add 20 parts of epoxidized soybean oils simultaneously in batches, mixed 10-20 minute, add 2.5 parts of KH550 then, mixed 2 minutes; At last, in mill, add 15 parts in phenolics, mix after 1-2 minute, make compound substance.
Embodiment 13:
The composition of each component and parts by weight are:
Styrene-butadiene rubber 100
Zinc paste 4
Stearic acid 3
Accelerant CZ 2
Promoter TT 0.1
Methacrylic acid terbium 200
Methacrylic acid europium 300
Gadolinium oxide 300
Al72 2.5
Dioctyl phthalate 30
Sulfur 4
In Banbury mixer, add 100 parts of (weight portion) styrene-butadiene rubber under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 4 parts of zinc paste, 3 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of accelerant CZs and 0.1 part of promoter TT again, mixed 1-2 minute; Add 300 parts of 200 parts of methacrylic acid terbiums and methacrylic acid europiums in batches, mixed 5-8 minute; Add 300 parts of gadolinium oxides in batches, during simultaneously add 30 parts of dioctyl phthalates in batches, mixed 10-20 minute, add 2.5 parts of Al72 then, mixed 2 minutes; At last, in mill, add 4 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 14:
The composition of each component and parts by weight are:
Styrene-butadiene rubber 100
Zinc paste 4
Stearic acid 3
Accelerant CZ 2
Promoter TT 0.1
Methacrylic acid cerium 200
Methacrylic acid samarium 300
Europium oxide 300
Al72 2.5
Dioctyl phthalate 30
Sulfur 4
In Banbury mixer, add 100 parts of (weight portion) styrene-butadiene rubber under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 4 parts of zinc paste, 3 parts of stearic acid successively, mixed 1-2 minute; Add 2 parts of accelerant CZs and 0.1 part of promoter TT again, mixed 1-2 minute; Add 300 parts of 200 parts of methacrylic acid ceriums and methacrylic acid samariums in batches, mixed 5-8 minute; Add 300 parts of europium oxides in batches, during simultaneously add 30 parts of dioctyl phthalates in batches, mixed 10-20 minute, add 2.5 parts of Al72 then, mixed 2 minutes; At last, in mill, add 4 parts of Sulfurs, mix after 1-2 minute, make compound substance.
Embodiment 15:
The composition of each component and parts by weight are:
EP rubbers 50
Acrylic acid gadolinium 100
Europium oxide 300
Samarium oxide 200
Al51 1.2
Paraffin oil 10
Cumyl peroxide 3
In Banbury mixer, add 100 parts of (weight portion) EP rubbers under the normal temperature, under rotor speed 60-80 rev/min shear rate, add 100 parts of acrylic acid samariums in batches, mixed 5-8 minute; Add 200 parts of 300 parts of neodymia and samarium oxides in batches, during add 10 parts of paraffin oils simultaneously in batches, mixed 10-20 minute, add 1.2 parts of Al51 then, mixed 2 minutes; At last, in mill, add 3 parts of cumyl peroxides, mix after 1-2 minute, make compound substance.
* represent the compound substance of unit thickness (mm) to be equivalent to the one-tenth-value thickness 1/10 of pure stereotype than lead equivalent value in the table, it is good more that this is worth high more shielding properties.
Claims (6)
1. rare earth modified full non-lead X-ray screen rubber, it is formed and parts by weight are:
Rubber 50-100
Zinc paste 1-5
Stearic acid 1-10
Rare earth organic complex 20-600
Inorganic rare earth compound 20-700
Silane coupling agent 0.5-3
Softening agent 2-30
Crosslinking chemical 2-15
Promoter 0.5-3
Said rare earth organic complex is acrylic rare earth salt, methacrylic acid rare-earth salts or their mixture of 16 kinds of lanthanide series except the promethium; The inorganic rare earth compound is rare earth oxide or the rare earth carbonate except the promethium.
2. according to the said rare earth modified full non-lead X-ray screen rubber of claim 1, it is characterized in that: said softening agent is petroleum line softener or synthetic plastifier.
3. according to the said rare earth modified full non-lead X-ray screen rubber of claim 1, it is characterized in that: said promoter is thiazole accelerator, sulfenamide type accelerators or thiuram type accelerator.
4. according to the said rare earth modified full non-lead X-ray screen rubber of claim 1, it is characterized in that: said crosslinking chemical is Sulfur, superoxide or phenolics.
5. according to the said rare earth modified full non-lead X-ray screen rubber of claim 1, it is characterized in that: said silane coupling agent is two (triethoxysilylpropyl) tetrasulfides, vinyltriethoxysilane or gamma-aminopropyl-triethoxy-silane.
6. according to the said rare earth modified full non-lead X-ray screen rubber of claim 2, it is characterized in that: said petroleum line softener is paraffin oils, aromatic naphtha or machinery oil; Synthetic plastifier is dibutyl phthalate, dioctyl phthalate or epoxidized soybean oil.
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| CN1314052C true CN1314052C (en) | 2007-05-02 |
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| CN101570606B (en) * | 2009-06-15 | 2011-01-05 | 北京化工大学 | Overall lead-free X-ray shielding rubber compound material |
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| CN102504371B (en) * | 2011-10-19 | 2014-02-12 | 四川贝特尔橡胶科技有限公司 | Lead-free rubber-based elastic compound shielding material and preparation method thereof |
| CN104532381B (en) * | 2014-12-21 | 2016-11-23 | 北京服装学院 | A kind of preparation method of X-ray-preventing rare earth/polypropylene composite materials fiber |
| CN105602021B (en) * | 2016-01-27 | 2017-12-12 | 北京化工大学 | A kind of low-voltage X-ray protective materials |
| CN106867260A (en) * | 2017-03-13 | 2017-06-20 | 成都德信安创新医疗技术有限公司 | A kind of rubber composition for X-ray protection and preparation method thereof |
| CN113511867A (en) * | 2021-08-17 | 2021-10-19 | 武汉源锦商品混凝土有限公司 | Radiation-proof concrete doped with rare earth composite material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563494A (en) * | 1982-11-08 | 1986-01-07 | Mitsubishi Rayon Co., Ltd. | Synthetic resin composition and process for producing the same |
| CN1115484A (en) * | 1993-07-30 | 1996-01-24 | 青岛橡胶制品六厂 | Protecting material for fast neutron radiation |
-
2004
- 2004-12-08 CN CNB2004100967904A patent/CN1314052C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563494A (en) * | 1982-11-08 | 1986-01-07 | Mitsubishi Rayon Co., Ltd. | Synthetic resin composition and process for producing the same |
| CN1115484A (en) * | 1993-07-30 | 1996-01-24 | 青岛橡胶制品六厂 | Protecting material for fast neutron radiation |
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| CN1787117A (en) | 2006-06-14 |
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