CN102690480A - Front panel for transmission display device and transmission display device - Google Patents
Front panel for transmission display device and transmission display device Download PDFInfo
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- CN102690480A CN102690480A CN2012101868046A CN201210186804A CN102690480A CN 102690480 A CN102690480 A CN 102690480A CN 2012101868046 A CN2012101868046 A CN 2012101868046A CN 201210186804 A CN201210186804 A CN 201210186804A CN 102690480 A CN102690480 A CN 102690480A
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- front panel
- transmission display
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- display device
- composite structure
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Abstract
The invention aims to provide a front panel for a transmission display device and the transmission display device. The front panel has high mechanical properties such as impact resistance and small double refraction; and the front panel is arranged on the front of liquid crystals in the transmission display device. According to the front panel for the transmission display device, a transparent resin prepared by molding a composition in which methacrylic resin and acrylic acid composite structure elastomer particles are mixed is used. The front panel has high mechanical properties such as impact resistance and small double refraction. Therefore, the front panel is suitable for the transmission display device.
Description
Technical field
The present invention relates to use front panel that the transmission display unit of transparent resin uses and the transmission display unit of having used this front panel, said transparent resin is the transparent resin that the composition molding that is mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle is obtained.
Background technology
Because of the metha crylic resin has excellent optical property, its moulding article are as the screen of mobile phone and smart mobile phone, the front panel that various transmission display unit such as the label of sound machine are used and being widely used.Such moulding article are if the residual stress after the moulding is very big, and then double refraction becomes big, speck occurs, glitter dazzling (the rainbow appearance that the interference of light causes) and damage outward appearance.Therefore, need reduce double refraction.
The metha crylic resin was the little resin of double refraction originally, but because the slimming of in recent years moulding article, the high speed of moulding, the residual stress when causing moulding is prone to increase.Therefore, people seek further to reduce double refraction.
As reducing birefringent method, general rightabout monomer of principal constituent TEB 3K and the methyl methacrylate copolymer that uses double refraction and metha crylic resin, the birefringent method that takes place when offsetting moulding.For example, disclose N-in the patent documentation 1 ~ 3 and replaced the maleic anhydride metha crylic resin that imines and methyl methacrylate copolymer obtain that contracts.
Yet, since these resin copolymerization the N-of tens of % replace the maleic anhydride imines that contracts, therefore produce the problem that mechanical properties such as shock-resistance reduces.
Prior art
Patent documentation
Patent documentation 1: Japanese Patent Laid is opened clear 61-095011 communique
Patent documentation 2: Japanese Patent Laid is opened clear 64-062314 communique
Patent documentation 3: japanese patent laid-open 1-215810 communique
Summary of the invention
The object of the present invention is to provide front panel that mechanical properties such as a kind of shock-resistance improves, the little transmission display unit of double refraction is used and the transmission display unit of having used this front panel.
The present invention has been to use the composition molding that will be mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle and front panel that the transmission display unit of the transparent resin that obtains is used.
In addition, the present invention is the transmission display unit that said front panel is configured in the front of liquid crystal.
Front panel of the present invention, mechanical properties such as shock-resistance improve, and double refraction is little.Therefore, the front panel that can use as the transmission display unit aptly.
Embodiment
The TEB 3K that self-aggregate that metha crylic resin of the present invention is a TEB 3K or 80 quality % are above and the multipolymer of other monomer A below the 20 quality %.
Multipolymer is the above TEB 3K of 90 quality % and the multipolymer of other monomer A below the 10 quality % preferably, is more preferably the multipolymer of above TEB 3K of 95 quality % and other monomer A below the 5 quality %.
Other monomer A for example have methyl acrylic esters such as Jia Jibingxisuanyizhi, NSC 20956, cyclohexyl methacrylate, phenyl methacrylate, methylacrylic acid benzene methyl, methylacrylic acid-2-ethylhexyl, 2-hydroxyethyl methacrylate for example; Methyl acrylate, ethyl propenoate, Bing Xisuandingzhi, cyclohexyl acrylate, phenyl acrylate, vinylformic acid benzene methyl, ethyl acrylate, vinylformic acid-esters of acrylic acids such as 2-hydroxyl ethyl ester; Unsaturated acids such as methylacrylic acid, vinylformic acid; Aromatic vinyl monomer such as vinylbenzene, alpha-methyl styrene; Vinyl cyanide such as vinyl cyanide, methacrylonitrile base monomer; Maleic anhydride, phenyl maleic anhydride imines, the cyclohexyl maleic anhydride toxilic acids such as imines that contract that contract are monomer.
Wherein, Jia Jibingxisuanyizhi, methyl acrylate, ethyl propenoates etc. are preferred, and methyl acrylate is more preferably.
These materials can use a kind separately, also can more than 2 kinds and use.
The not special restriction of the method for manufacture of metha crylic resin of the present invention can be made through general mass polymerization, solution polymerization, suspension polymerization, emulsion polymerization.
Acrylic acid series composite structure elastomerics particle of the present invention is as long as show elastic property; Just not special restriction, but preferably by innermost layer rigid polymer/central stratum soft polymer/outermost layer rigid polymer, or by composite structure that the internal layer soft polymer/outer rigid polymer constitutes.
The acrylic acid series composite structure elastomerics particle material that for example is listed below.
Have the multipolymer that the multi-functional monomer polymerization of other monomers B that carbonatoms with the alkyl of the 1,3-butadiene of 30 ~ 80 quality %, 20 ~ 70 quality % is 1 ~ 8 alkyl acrylate, 0 ~ 30 quality % and 0 ~ 5 quality % obtains as internal layer,
With respect to above-mentioned internal layer, have carbonatoms with the alkyl of the TEB 3K of 80 ~ 100 quality %, 0 ~ 20 quality % and be the skin that other monomers B of 1 ~ 8 alkyl acrylate and 0 ~ 10 quality % are carried out graft copolymerization,
With respect to internal layer 100 mass parts, skin is the composite structure elastomerics particle of 10 ~ 500 mass parts.
Internal layer is preferably the multipolymer that the multi-functional monomer polymerization of other monomers B that carbonatoms with the alkyl of the 1,3-butadiene of 40 ~ 60 quality %, 40 ~ 60 quality % is 1 ~ 8 alkyl acrylate, 0 ~ 15 quality % and 0 ~ 2 quality % obtains.
It is the multipolymer that other monomers B of 1 ~ 8 alkyl acrylate and 0 ~ 5 quality % are carried out graft copolymerization that skin is preferably carbonatoms with the alkyl of the TEB 3K of 90 ~ 100 quality %, 0 ~ 10 quality %.
With respect to internal layer 100 mass parts, preferred skin is 20 ~ 80 mass parts.
Other monomers B are in order to make specific refractory power consistent with the metha crylic resin and the material that uses for example has aromatic vinyl monomers such as vinylbenzene, alpha-methyl styrene for example; Vinyl cyanide such as vinyl cyanide, methacrylonitrile base monomer.
As multi-functional monomer, aromatic diethylene base monomers such as Vinylstyrene are for example arranged for example; Dimethyl allene acid mono such as TGM 1; Acrylic acid allyl ester; The allyl ester of methylacrylic acid.
Acrylic acid series composite structure elastomerics particle preferably adopts the emulsion polymerization manufacturing.Method of manufacture does not have special regulation, can use general emulsifying agent and polymerization starter.
The latex of the acrylic acid series composite structure elastomerics particle that makes with emulsion polymerization makes it to solidify drying with known method.
The mixture ratio of metha crylic resin and acrylic acid series composite structure elastomerics particle is metha crylic resin 50 ~ 95 quality %; Acrylic acid series composite structure elastomerics particle 5 ~ 50 quality %; The preferable methyl acrylic resin is 65 ~ 90 quality %, and acrylic acid series composite structure elastomerics particle is 10 ~ 35 quality %.
To acrylic acid series composite structure elastomerics particle be sneaked into to the metha crylic resin preferred molten method of mixing.Specifically, be exactly to add stablizer, dyestuff, pigment, other additives as required, with mixing such as Henschel mixing tanks, with the method for extrusion machine melting mixing.
The present invention is a kind of like this invention: with 1; The 3-divinyl is principal constituent with alkyl acrylate, makes in the specific refractory power rubber layer consistent with the metha crylic resin; Through with principal constituent being acrylic acid series composite structure elastomerics particle and the metha crylic mixed with resin that the monomer-grafted copolymerization of TEB 3K obtains; Thereby under the situation of the transparency of not damaging the original excellence of metha crylic resin, surface luster, weathering resistance; Double refraction when weakening moulding improves mechanical properties such as shock-resistance.
Transmission display unit of the present invention does not have special stipulation, and expression has the device of general display part such as liquid crystal.TV, mobile phone, touch screen type smart mobile phone are for example arranged for example, screens such as auto-navigation system device; Label such as sound machine, household electrical appliance.
The moulding article that obtain among the present invention are for mechanical properties such as shock-resistance improve, the little transparent resin of double refraction.Thus, the suitable front panel of using as the transmission display unit.
Embodiment
Below, embodiments of the invention more specifically are described.The present invention is not limited by these embodiment.The various rerum naturas that show in embodiment, the comparative example are estimated in order to following method.
(1) double refraction
With injection moulding forming machine (toshiba machine (strain) system, IS80FPA3-2A), with the test film moulding of 100 * 100 * 2mm.The condition of injection-molded moulding is described below.Resin temperature: 240 ℃, the metal pattern temperature: 60 ℃, injection speed: 22cm
3/ s.
With polarizing microscope ((strain) Nikon system, OPTIPHOT-POL), apart from the injection port 10,30,50,70 of this test film, the position finding double refraction of 90mm.
(2) shock-resistance
According to JIS K7111, measure the summer than notched Izod impact strength, test film is of a size of 80 * 10 * 4mm.
[embodiment 1]
Use is mixed with the compsn as the multipolymer of the methyl acrylate of the TEB 3K of 99 quality % of metha crylic resin and 1 quality % (to call " copolymer A " in the following text) 85 quality % and elastomerics particle 15 quality %; Make test film through injection-molded moulding; Estimate each rerum natura, said elastomerics particle is an acrylic acid series composite structure elastomerics particle, and its internal layer is by 1 of 45 quality %; The Bing Xisuandingzhi of 3-divinyl and 55 quality % constitutes; Skin is made up of the TEB 3K of 96 quality % and the methyl acrylate of 4 quality %, and with respect to the internal layer of 100 mass parts, skin is 40 mass parts.
Evaluation result is represented at table 1.
[embodiment 2]
Except use is mixed with the compsn as the elastomerics particle of the copolymer A of 75 quality % of metha crylic resin and 25 quality %; All the other carry out with embodiment 1 the samely; Said elastomerics particle is an acrylic acid series composite structure elastomerics particle; Its internal layer is made up of the 1,3-butadiene of 45 quality % and the Bing Xisuandingzhi of 55 quality %, and skin is made up of the TEB 3K of 95 quality % and the methyl acrylate of 5 quality %; With respect to the internal layer of 100 mass parts, skin is 40 mass parts.
[comparative example 1]
Except use is mixed with the compsn as the elastomerics particle of the copolymer A of 85 quality % of metha crylic resin and 15 quality %; All the other carry out with embodiment 1 the samely; Said elastomerics particle is an acrylic acid series composite structure elastomerics particle, and its internal layer is made up of the Bing Xisuandingzhi of 80 quality % and the vinylbenzene of 20 quality %, and skin is made up of the TEB 3K of 95 quality % and the methyl acrylate of 5 quality %; With respect to the internal layer of 100 mass parts, skin is 60 mass parts.
[comparative example 2]
Do not use the acrylic acid series composite structure elastomerics particle except using as the copolymer A 100 quality % of metha crylic resin, other carry out with embodiment 1 the samely.
Table 1
The evaluation result of double refraction and shock-resistance
Shown in table 1 is clear; The moulding article that are mixed with the composition molding of metha crylic resin and acrylic acid series composite structure elastomerics particle and obtain of the present invention have been confirmed; Than moulding article that metha crylic resin and general acrylic rubber blended composition molding are obtained and only based resin molded and moulding article that obtain by methylacrylic acid; Double refraction is little, and shock-resistance is excellent.
Claims (8)
1. front panel that the transmission display unit is used, it has used the composition molding that will be mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle and the transparent resin that obtains.
2. front panel that mobile phone is used, it has used the composition molding that will be mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle and the transparent resin that obtains.
3. front panel that smart mobile phone is used, it has used the composition molding that will be mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle and the transparent resin that obtains.
4. front panel that sound machine is used, it has used the composition molding that will be mixed with metha crylic resin and acrylic acid series composite structure elastomerics particle and the transparent resin that obtains.
5. transmission display unit, in the former configuration of liquid crystal the front panel of record in the claim 1.
6. mobile phone, in the former configuration of liquid crystal the front panel of record in the claim 2.
7. smart mobile phone, in the former configuration of liquid crystal the front panel of record in the claim 3.
8. sound machine, in the former configuration of liquid crystal the front panel of record in the claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101868046A CN102690480A (en) | 2012-06-07 | 2012-06-07 | Front panel for transmission display device and transmission display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101868046A CN102690480A (en) | 2012-06-07 | 2012-06-07 | Front panel for transmission display device and transmission display device |
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| Publication Number | Publication Date |
|---|---|
| CN102690480A true CN102690480A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101868046A Pending CN102690480A (en) | 2012-06-07 | 2012-06-07 | Front panel for transmission display device and transmission display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412181A (en) * | 2016-08-31 | 2017-02-15 | 北海威德电子科技有限公司 | Mobile phone shell capable of protecting screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1050134A (en) * | ||||
| CN1266453A (en) * | 1998-04-27 | 2000-09-13 | 钟渊化学工业株式会社 | Resin composition containing multilayered graft polymer |
| CN1950409A (en) * | 2004-03-30 | 2007-04-18 | 三菱丽阳株式会社 | Impact resistance modifier and resin composition |
-
2012
- 2012-06-07 CN CN2012101868046A patent/CN102690480A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1050134A (en) * | ||||
| CN1266453A (en) * | 1998-04-27 | 2000-09-13 | 钟渊化学工业株式会社 | Resin composition containing multilayered graft polymer |
| CN1950409A (en) * | 2004-03-30 | 2007-04-18 | 三菱丽阳株式会社 | Impact resistance modifier and resin composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412181A (en) * | 2016-08-31 | 2017-02-15 | 北海威德电子科技有限公司 | Mobile phone shell capable of protecting screen |
| CN106412181B (en) * | 2016-08-31 | 2019-04-26 | 宁波远志立方能源科技有限公司 | Mobile phone shell capable of protecting screen |
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Application publication date: 20120926 |