CN108164964A - The preparation method of cover material and upper cover on a kind of knob selector knob display screen - Google Patents
The preparation method of cover material and upper cover on a kind of knob selector knob display screen Download PDFInfo
- Publication number
- CN108164964A CN108164964A CN201711489649.4A CN201711489649A CN108164964A CN 108164964 A CN108164964 A CN 108164964A CN 201711489649 A CN201711489649 A CN 201711489649A CN 108164964 A CN108164964 A CN 108164964A
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- China
- Prior art keywords
- display screen
- knob
- upper cover
- screen upper
- selector knob
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003973 paint Substances 0.000 claims abstract description 18
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 17
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 16
- 238000001746 injection moulding Methods 0.000 claims abstract description 14
- 239000006229 carbon black Substances 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 229920000573 polyethylene Polymers 0.000 claims abstract description 11
- 239000000155 melt Substances 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 4
- 230000003179 granulation Effects 0.000 claims abstract description 4
- 238000002834 transmittance Methods 0.000 claims description 14
- 238000005453 pelletization Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000012797 qualification Methods 0.000 claims description 2
- 235000010215 titanium dioxide Nutrition 0.000 claims 3
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000011265 semifinished product Substances 0.000 description 6
- 239000004425 Makrolon Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 229920000515 polycarbonate Polymers 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 208000003464 asthenopia Diseases 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000004438 eyesight Effects 0.000 description 3
- 239000003925 fat Substances 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The preparation method of cover material and upper cover on a kind of knob selector knob display screen, material include following components：Polycarbonate resin；Titanium dioxide；Polyethylene wax；Antioxidant；Dispersant；Middle colour carbon black；The melt index of the polycarbonate resin is 5 8g/10min；The knob selector knob display screen upper lid surface is coated with UV paints.The present invention is by injection molding molding disposable after the extruded granulation of each component, then carries out UV processing on surface.Avoid the low-grade sense problem that the prior art is brought, with certain technology sense, solve the problems, such as that prior art lamplight brightness is not up to standard so that light is more soft, meet automobile room lamp cursor alignment request, while ensure that the homogeneity of product quality improves production efficiency and reduces cost.
Description
Technical field
The present invention relates to a kind of automobile rotary knobs to show screen material, more particularly to a kind of light transmittance and the moderate knob of brightness
The preparation method of cover material and the upper cover on selector knob display screen.
Background technology
Knob selector is a kind of form of electric gear change bar, compared to such as other selectors, such as electronic gear,
The forms such as console button, the time that knob selector occurs is later, and more save space, it appears that also more attractive, air.Mesh
The preceding automobile using knob selector belongs to high-grade car mostly.
Knob selector can be divided into knob portion and control panel part.Wherein there are one the upper surfaces of knob portion meeting
Knob display screen, can be in knob display screen upper cover there are one covers in display screen outer surface.For its knob display screen upper cover, due to
Display screen is internally provided with light-emitting component, and the light sent out needs to be shown to driver or passenger across knob display screen upper cover,
Therefore to the optical property meeting of knob display screen upper cover, there are three require：
First, light transmittance is suitable：If light transmittance is too high, light-emitting component of the user in display screen can be caused not shine
When can also be directed through knob display screen upper cover and see its internal structure, give that user's class is relatively low, technology sense is not strong
Psychological feelings, and when the light-emitting component shines, then the brightness that can make knob display screen upper cover is too high, generates hereafter " its
Two " the problem of, and glare effect is strong, easy visual fatigue, generates the security risk of driving；If light transmittance is too low, institute
When stating light-emitting component and shining, luminance shortage that knob display screen upper cover shows, driver needs the long period could during driving
Notice the content of display screen.
Secondly：Brightness is suitable：If brightness is too high, vision can be caused uncomfortable and reduce the visual condition of object visibility,
Visual fatigue is caused, security risk is generated to driver；If brightness is too low, it is difficult to meet the requirement of automotive interior standard again,
Driver needs the long period just it will be noted that the content of display screen during driving.
Thirdly：Wide chromaticity range：Since its light-emitting component can be set to different colors, wide chromaticity range energy
The different colours of the light source sent out are effectively distinguished, user is contributed to be distinguished in first time.
In the prior art, the material for the light mask of knob selector knob display screen upper cover is generally light transmission
Resin, such as PC (makrolon), PMMA (acrylic, polymethacrylates, organic glass), production method usually has following
Two kinds of processing methods：
The first is to carry out injection molding with pure light-transmissive resin, and pitch-dark, formation is then coated in the one side by close to sources
Lightproof area, then the intermediate part for showing light is carried out laser carving processing, form transmission region.
Be for second that injection molding is carried out with pure light-transmissive resin, ash paint then coated in the one side by close to sources, not into
The processing of row laser carving.
Using the first processing method, the substantially impervious light of lightproof area, and the optical property of transmission region is substantially equal to it
The optical property of pure light-transmissive resin raw material.Its transmission region can be straight when light-emitting component of the user in display screen does not shine
It connects and sees internal structure through upper cover, glare effect is strong when shining.
Using second of processing method, the optical property of entire knob display screen upper cover is uniform, in display screen
When light-emitting component does not shine, the internal structure of knob can be effectively blocked, but since the covering power of ash paint is stronger, it can be caused
The problems such as light transmittance, brightness, chromaticity range decline to a great extent, and display light unobvious, color are difficult to differentiate between is allowed to not meet corresponding
The requirement of authority file.
Therefore, it is necessary to find a kind of knob selector knob display screen upper cover that can be solved the above problems simultaneously and
Preparation method.
Invention content
First purpose of the present invention is to provide a kind of material especially suitable for knob selector knob display screen upper cover
Material, at work, the brightness that is presented, light transmittance are moderate, and coloration is also suitable for this material.
Second object of the present invention is to provide the preparation of above-mentioned knob selector knob display screen upper cover moulding material
Method, this preparation method simple process, without doing spray painting processing and the processing of laser carving again.
The object of the invention can be realized by following technical solution:
A kind of material of knob selector knob display screen upper cover, is made of by weight following component：
The melt index of the polycarbonate resin is 5-8g/10min (3.2Kg, 300 DEG C)；
The present invention can do and improve further below：
The present invention in order to not generate aberration as far as possible after shaping, and through the present inventor's experimental study, the titanium dioxide is excellent
Choosing is using the titanium dioxide after the screening of 1000 mesh.
The present invention in injection in order to not only have good lubricant effect, but also be conducive to act synergistically with other components, through this
Inventor's experimental study, the polyethylene wax preferably use the good lubricant of XH-202 light.
Present invention upper cover described in order to prevent is oxidized easily decomposition in use, influences service life, while energy
It acts synergistically with other components, through the present inventor's experimental study, the antioxidant preferably uses antioxidant 1010.
The present invention in order to when enabling to mix each component in process each component more disperse uniform, and do not influence each group
/ synergistic effect, through the present inventor's experimental study, the dispersant preferably use 65# white oils.
Material prescription principle explanation of the present invention：
Polycarbonate resin is the main component of the present invention, and the mechanical performance of makrolon is superior, is five big general engineerings
Uniquely there is the thermoplastic engineering plastic of good transparency in plastics.In automobile lighting system, current all vehicles are almost complete
Portion uses impact resistance and the good makrolon material of translucency, and makes full use of the characteristic of its easily molded processing, by vehicle
For all molds such as lamp head, connection sheet and lamp body in lens, design flexibility is big, easy to process, is that glass is irreplaceable.
The effect of titanium dioxide is for color homogenization, to prevent aberration.
Lubricant of the polyethylene wax as the knob display screen upper cover in squeezing out, rolling, injection is processed, can improve and add
Work efficiency rate prevents and overcomes film, tubing, sheet material bonding, improves the smoothness and glossiness of finished product, improve finished appearance.
Antioxidant is used to delay or inhibit the progress of polymer oxidation process, so as to prevent the aging of polymer and extend it
Service life.
Dispersant be it is a kind of in the molecule while there is the interfacial agents of two kinds of opposite natures of lipophile and hydrophily,
Purpose in the present invention is that each component is uniformly dispersed at the time of molding, prevents from agglomerating.
Colour carbon black is utilized in the carbon black for being used as coloring pigment in the products such as ink, paint, coating, plastics, according to color
Intensity and particle size are generally divided into four kinds of high-carbon black pigment, middle colour carbon black, ordinary carbon black pigment and low colour carbon black.This hair
Bright preferred oil absorption is relatively low, blackness is medium, the colouring preferably middle colour black of power.
The method of upper cover includes the following steps described in the material preparation of above-mentioned knob selector knob display screen upper cover：
(1) dried polycarbonate resin, titanium dioxide, polyethylene wax, antioxidant and middle colour carbon black are added in proportion
Enter to premixing 2-3 minutes in mixing machine；Then, it is mixed again 5-8 minutes after adding in dispersant；
Mixed raw material is through double-screw extruding pelletizing machine extruding pelletization；
(2) the above-mentioned material after granulation is disposably molded the upper cover to be molded in injection molding machine；
(3) it by knob selector knob display screen upper cover after injection molding spraying UV paints, is then irradiated by UV lamp,
UV paints is made to be converted into solid-state by liquid；
The thickness of the UV paints is 15-25 μm；
(4) after tested, it is packaged into finished product after qualification.The present invention can do and improve further below：
Preparation method of the present invention can be done and improve further below：
Preferably, test passes standard is：Light transmittance is 85-90%, brightness 80-100cd/m2, coloration is in standard colorimetric
Map reference ranging from (X, Y)=(0.3 ± 0.03,0.3 ± 0.03)；
Compared with prior art, the invention has the advantages that:
1) knob selector knob display screen upper cover light transmittance, brightness, chromaticity index made of the present invention are in industry
In critical field, meet the requirement of relevant criterion file, surface light transmittance is consistent, not only avoid the prior art bring it is saturating
Light region and the significantly low-grade sense problem of non-transparent area differentiation, and solve that prior art lamplight brightness is not up to standard to ask
Topic so that light is more soft, meets automobile room lamp cursor alignment request.Therefore, present invention gained display screen upper cover finished product is not
But with high-grade appearance, and excellent comfortable using effect can also be reached.
2) preparation process of the invention is simple, injection molding disposable after the extruded granulation of each component is molded, Ran Hou
Surface carries out UV processing.Preparation process is not only enormously simplified, is omitted after display screen upper cover molding in the prior art also
The process of japanning and laser carving is needed, and avoids the fraction defective brought by extra process.
3) present invention carries out UV processing to the outer surface of product, makes its scratch-resistant, prevents knob display screen high spot from easily making
Into collision and friction, so as to avoid the problem that influencing mask translucent effect because its surface scrapes.
4) good using effect possessed by the present invention, neither easily causes driver's visual fatigue, and can allow driving
Personnel are quickly obtained the information that the knob display screen is shown, to make appropriate driver behavior in time, so as to improve
The safety of driving.
Specific embodiment
The invention will be further described for example below, so that those skilled in the art can be better understood from the present invention
And it can be practiced, but illustrated embodiment is not as a limitation of the invention.
Comparative example one
This comparative example one is that plastic is carried out injection molding with pure makrolon material, and the spraying of the lid back side is thick on a display screen
Spend the blacking for 15-25 μm；Then light transmission part will be needed to carry out laser carving, finally assembled, tested, be packaged into after qualified
Finished product.
Comparative example two
This comparative example with pure makrolon material by plastic second is that carry out injection molding, and the spraying of the lid back side is thick on a display screen
Spend the grey paint for 15-25 μm；It finally assembled, tested, finished product is packaged into after qualified.
Embodiment one
Cover material on a kind of knob selector knob display screen, is made of by weight following component：
The melt index of polycarbonate resin is 5-8g/10min；
Knob selector knob display screen upper lid surface is coated with UV paints.
Titanium dioxide is the titanium dioxide after the screening of 1000 mesh, and polyethylene wax is the good lubricant of XH-202 light.Antioxidant is
Antioxidant 1010, dispersant are 65# white oils.
Preparation method includes the following steps：
(1) it is polycarbonate resin is 3 hours dry at a temperature of 140 DEG C；By weight by dried polycarbonate resin
Premix is carried out in fat, titanium dioxide, polyethylene wax, antioxidant and middle colour carbon black addition mixing machine after 2 minutes, then by weight to add
Enter the dispersant accurately measured to mix again 5 minutes,
It is added in after mixing to double-screw extruding pelletizing machine；It is squeezed out, drawn by the abundant fusion plastification of double-screw extruding pelletizing machine
Granular feedstock is made in item, cooling, pelletizing, homogenizing；
(2) mold is made in the shape of the knob selector knob display screen upper cover needed for installation；
(3) granular feedstock by injection molding machine is disposably molded to mold, knob selector knob display screen is made
Upper cover semi-finished product；
(4) it by semi-finished product spraying UV paints (thickness is 15-25 μm) made of step (3), is then irradiated by UV lamp, makes it
Solid-state is converted by liquid；
(5) it is packaged into finished product.
Embodiment two
Cover material on a kind of knob selector knob display screen, is made of by weight following component：
The melt index of polycarbonate resin is 5-8g/10min；
Knob selector knob display screen upper lid surface is coated with UV paints.
Titanium dioxide is the titanium dioxide after the screening of 1000 mesh, and polyethylene wax is the good lubricant of XH-202 light.Antioxidant is
Antioxidant 1010, dispersant are 65# white oils.
Preparation method includes the following steps：
(1) it is polycarbonate resin is 4 hours dry at a temperature of 140 DEG C；By weight by dried polycarbonate resin
Premix is carried out in fat, titanium dioxide, polyethylene wax, antioxidant and middle colour carbon black addition mixing machine after 2 minutes, then by weight to add
Enter the dispersant accurately measured to mix again 6 minutes,
It is added in after mixing to double-screw extruding pelletizing machine；It is squeezed out, drawn by the abundant fusion plastification of double-screw extruding pelletizing machine
Granular feedstock is made in item, cooling, pelletizing, homogenizing；
(2) mold is made in the shape of the knob selector knob display screen upper cover needed for installation；
(3) granular feedstock by injection molding machine is disposably molded to mold, knob selector knob display screen is made
Upper cover semi-finished product；
(4) it by semi-finished product spraying UV paints (thickness is 15-25 μm) made of step (3), is then irradiated by UV lamp, makes it
Solid-state is converted by liquid；
(5) it is packaged into finished product.
Embodiment three
Cover material on a kind of knob selector knob display screen, is made of by weight following component：
The melt index of polycarbonate resin is 5-8g/10min；
Knob selector knob display screen upper lid surface is coated with UV paints.
Titanium dioxide is the titanium dioxide after the screening of 1000 mesh, and polyethylene wax is the good lubricant of XH-202 light.Antioxidant is
Antioxidant 1010, dispersant are 65# white oils.
Preparation method includes the following steps：
(1) it is polycarbonate resin is 5 hours dry at a temperature of 140 DEG C；By weight by dried polycarbonate resin
Premix is carried out in fat, titanium dioxide, polyethylene wax, antioxidant and middle colour carbon black addition mixing machine after 3 minutes, then by weight to add
Enter the dispersant accurately measured to mix again 8 minutes,
It is added in after mixing to double-screw extruding pelletizing machine；It is squeezed out, drawn by the abundant fusion plastification of double-screw extruding pelletizing machine
Granular feedstock is made in item, cooling, pelletizing, homogenizing；
(2) mold is made in the shape of the knob selector knob display screen upper cover needed for installation；
(3) granular feedstock by injection molding machine is disposably molded to mold, knob selector knob display screen is made
Upper cover semi-finished product；
(4) it by semi-finished product spraying UV paints (thickness is 15-25 μm) made of step (3), is then irradiated by UV lamp, makes it
Solid-state is converted by liquid；
(5) it is packaged into finished product.
Optical performance test is carried out to embodiment one to three, comparative example one and two, test passes standard is：Range of transmittance
For 85%-90%, brightness 80-100cd/m2, coloration on standard chromatic diagram coordinate range for (X, Y)=(0.3 ± 0.03,
0.3±0.03)。
After tested, the light transmittance of display screen upper cover, brightness are all higher than testing standard value made of comparative example one, in light not
Upper cover can be directed through when bright and sees internal structure, gives the psychological feelings that user's class is relatively low, technology sense is not strong；It is if another long
Using this product, light is too strong excessively bright, and vision can be caused uncomfortable and reduce the visual condition of object visibility, cause vision
Fatigue generates security risk to driver.
The light transmittance of display screen upper cover, brightness, coloration are respectively less than standard value made of comparative example two, though when light does not work
Its internal structure can be blocked, but its translucent effect and lamplight brightness are difficult to meet the requirement of automotive interior standard, when driving drives
Personnel need the long period just it will be noted that the content of display screen.
And the defects of then solving comparative example one, comparative example two simultaneously of the invention, manufactured product light transmittance, brightness, coloration
In standard value range, the low-grade sense problem that comparative example one is brought is not only avoided, with certain technology sense, and
Solving the problems, such as that two lamplight brightness of comparative example is not up to standard so that light is more soft, meets automobile room lamp cursor alignment request,
It ensure that the homogeneity of product quality improves production efficiency and reduces cost simultaneously.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind the above according to the present invention according to the ordinary technical knowledge and customary means of this field, is not departing from this
Under the premise of inventing above-mentioned basic fundamental thought, the modification of other diversified forms, replacement or the change made to above structure of the present invention
More, it should all fall within the scope and spirit of the invention.
Claims (8)
1. a kind of material of knob selector knob display screen upper cover, which is characterized in that be made of by weight following component：
The melt index of the polycarbonate resin is 5-8g/10min.
2. the material of knob selector knob display screen upper cover according to claim 1, it is characterised in that：The titanium
White powder is the titanium dioxide after the screening of 1000 mesh.
3. the material of knob selector knob display screen upper cover according to claim 2, it is characterised in that：The poly- second
Alkene wax is the good lubricant of XH-202 light.
4. the material of knob selector knob display screen upper cover according to claim 3, it is characterised in that：The antioxygen
Agent is antioxidant 1010.
5. the material of knob selector knob display screen upper cover according to any one of claims 1 to 4, it is characterised in that：
The dispersant is 65# white oils.
6. the material of knob selector knob display screen upper cover according to claim 1, it is characterised in that：The knob
Formula selector knob display screen upper lid surface is coated with UV paints.
7. it is a kind of according to the material preparation of any knob selector knob display screen upper cover of claim 1 to 6 on
The method of lid, which is characterized in that include the following steps：
(1) it is polycarbonate resin is 3-5 hours dry at >=140 DEG C；
Dried polycarbonate resin, titanium dioxide, polyethylene wax, antioxidant and middle colour carbon black are proportionally added into mixing
Premix 2-3 minutes in machine；Dispersant is added to mix again 5-8 minutes；
Mixed raw material is through double-screw extruding pelletizing machine extruding pelletization；
(2) by the above-mentioned one-time injection molding in injection molding machine of the material after granulation；
(3) it by knob selector knob display screen upper cover after injection molding spraying UV paints, is then irradiated by UV lamp, makes UV
Paint is converted into solid-state by liquid；
It is 15-25 μm that the thickness of the UV paints, which is thickness,；
(5) after tested, it is packaged into finished product after qualification.
8. the method for upper cover described in the material preparation of knob selector knob display screen upper cover according to claim 7,
It is characterized in that：Test passes standard is：Range of transmittance is 85%-90%, brightness 80-100cd/m2, coloration is in reference colour
Spend map reference ranging from (X, Y)=(0.3 ± 0.03,0.3 ± 0.03).
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| CN201711489649.4A CN108164964A (en) | 2017-12-29 | 2017-12-29 | The preparation method of cover material and upper cover on a kind of knob selector knob display screen |
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| CN201711489649.4A CN108164964A (en) | 2017-12-29 | 2017-12-29 | The preparation method of cover material and upper cover on a kind of knob selector knob display screen |
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| KR20060056534A (en) * | 2004-11-22 | 2006-05-25 | 주식회사 선진화학 | Light diffusion composition containing light diffusing agent in porous or hollow form |
| CN102985471A (en) * | 2010-05-10 | 2013-03-20 | 拜耳知识产权有限责任公司 | Polymer compositions with heat absorption and improved color properties |
| CN106321803A (en) * | 2016-10-25 | 2017-01-11 | 奇瑞汽车股份有限公司 | Self-locking type automobile rotary knob gear shifting device |
| CN107501889A (en) * | 2017-08-19 | 2017-12-22 | 广东圆融新材料有限公司 | A kind of high black high glaze easy processing polycarbonate compositions and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060056534A (en) * | 2004-11-22 | 2006-05-25 | 주식회사 선진화학 | Light diffusion composition containing light diffusing agent in porous or hollow form |
| CN102985471A (en) * | 2010-05-10 | 2013-03-20 | 拜耳知识产权有限责任公司 | Polymer compositions with heat absorption and improved color properties |
| CN106321803A (en) * | 2016-10-25 | 2017-01-11 | 奇瑞汽车股份有限公司 | Self-locking type automobile rotary knob gear shifting device |
| CN107501889A (en) * | 2017-08-19 | 2017-12-22 | 广东圆融新材料有限公司 | A kind of high black high glaze easy processing polycarbonate compositions and preparation method thereof |
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