CN103640292A - Mobile phone film - Google Patents
Mobile phone film Download PDFInfo
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- CN103640292A CN103640292A CN201310612951.XA CN201310612951A CN103640292A CN 103640292 A CN103640292 A CN 103640292A CN 201310612951 A CN201310612951 A CN 201310612951A CN 103640292 A CN103640292 A CN 103640292A
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Abstract
The invention discloses a mobile phone film which consists of a base film of a PET material and a polyurethane coating, wherein the surface of the PET base film is coated with the polyurethane coating, and the polyurethane coating is prepared from the following raw materials in parts by weight: 70-84 parts of polyurethane prepolymer, 1-15 parts of dimethicone, 1-10 parts of epoxy resin, 2 parts of chain extender, 2 parts of crosslinking agent, 4 parts of plasticizer, 1 part of catalyst, 2 parts of antifoaming agent and 5 parts of filler. The mobile phone film disclosed by the invention has the advantages of relatively good heat resistance, weather fastness and long service life.
Description
Technical field
The present invention relates generally to a kind of mobile phone film with polyurethane coating, particularly a kind of polyurethane coating mobile phone film through organosilicon and epoxy resin modification.
Background technology
Along with the continuous lifting of mobile phone temperature, the commercial value of its periphery industrial chain is also increasing, and a kind of as mobile phone periphery industry of safeguard film for cellular phone, its application and research is also more and more extensive.At present, safeguard film for cellular phone generally adopts PET material as base material, because PET material has it, has the advantages such as excellent physical property, chemical property and dimensional stability, the transparency, recuperability, then is coated with coating material and is made.
The material that can be used as mobile phone membrane coat has a lot; use comparatively generally acrylic coating, its price comparison is cheap, but uses the safeguard film for cellular phone venting quality of acrylic coating poor; and easily on mobile phone screen, leave cull, affect the mobile phone screen life-span.Although and silica-gel coating has solved the problem of gas permeability, the technical problem that leaves cull on mobile phone screen is not still resolved.Polyurethane coating, is called again pu coating, has advantages of wear-resisting, moisture-proof, venting quality is good and do not have cull remaining.But the general shortcoming but with polyurethane material, i.e. its heat resistance, acid-alkali-corrosive-resisting poor-performing, affect service life of mobile phone film.
Summary of the invention
The pu coating mobile phone film that the object of this invention is to provide a kind of heat resistance, acid-alkali-corrosive-resisting better performances.
Technical scheme of the present invention is: described mobile phone film is comprised of basement membrane and the polyurethane coating of pet material, and described polyurethane coating is coated on described pet membrane surface, and described polyurethane coating is made by following weight portion raw material:
Base polyurethane prepolymer for use as: 70 ~ 84; Dimethicone: 1 ~ 15; Epoxy resin: 1 ~ 10; Chain extender: 2;
Crosslinking agent: 2; Plasticizer: 4; Catalyst: 1; Defoamer: 2; Filler: 5.
As a preferred embodiment of the present invention, described polyurethane coating composition is made by following weight portion raw material:
Base polyurethane prepolymer for use as: 75 ~ 78; Dimethicone: 7 ~ 10; Epoxy resin: 3 ~ 6; Chain extender: 2; Crosslinking agent: 2; Plasticizer: 4; Catalyst: 1; Defoamer: 2; Filler: 5.
Further, described polyurethane coating composition is made by following weight portion raw material: base polyurethane prepolymer for use as: 75; Dimethicone: 10; Epoxy resin: 5; Chain extender: 2; Crosslinking agent: 2; Plasticizer: 4; Catalyst: 1; Defoamer: 2; Filler: 5.
Further, described chain extender is diglycol, and described crosslinking agent is trimethylolpropane, and described plasticizer is o-phthalic acid dibutyl ester, and described filler is nano zine oxide.
That the safeguard film for cellular phone of polyurethane coating made has advantages of is wear-resisting, moisture-proof, venting quality is good and do not have cull remaining, but the heat resistance of polyurethane coating, against weather are poor, has affected the service life of mobile phone film.Organosilicon is a stable skeleton being alternately comprised of Si-O-Si key, have fabulous high and low temperature resistance and fabulous chemical stability, and epoxy resin is to have good caking property, corrosion resistance and stable on heating macromolecular material.Therefore,, for improving the heat resistance of polyurethane coating, it is composite modified that the present invention adopts dimethicone and epoxy resin to carry out polyurethane coating, by Organo-silicon on Polyurethane performed polymer, carries out block or graft reaction, to improve the heat resistance of polyurethane coating.It is can make polyurethane have good heat-proof quality because added the polyurethane of nano zine oxide as filler that the present invention adopts nano zine oxide.Mobile phone film of the present invention has good heat resistance, against weather, the advantage of long service life.
The specific embodiment
It is can make polyurethane have good heat-proof quality because of the polyurethane that has added nano zine oxide that the present invention adopts nano zine oxide filler.Found through experiments when adding 1 part of nano zine oxide, now the mechanical property of polyurethane has obtained very large raising, and now polyurethane has good effect of heat insulation.But when adding 4 parts of nano zine oxides to, mechanical property but declines to a great extent, continue to add the consumption of nano zine oxide, the mechanical property of polyurethane has been got back to be increased slowly.Analyzing its reason, may be because when adding a small amount of nano zine oxide, due to the special effects of nano particle, greatly improved the mechanical property of polyurethane.But when addition increases, due to the agglomeration of nano particle, lost the special effects of the nano particle of original nano zine oxide, then continued to add nano oxidized property, only played the effect of adding common zinc ion, the mechanical strength of polyurethane coating slowly increases.Therefore the amount of additive nano zine oxide is added 1 ~ 5 part, take 3 parts as good.
The amount of dimethicone and the amount of epoxy resin of the present invention being added below in conjunction with series of experiments example are described further:
Experimental example 1
Formula: base polyurethane prepolymer for use as: 84; Dimethicone: 1; Chain extender: 2; Crosslinking agent: 2; Plasticizer: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Wherein, described chain extender is diglycol, and described crosslinking agent is trimethylolpropane, and described plasticizer is o-phthalic acid dibutyl ester, and described filler is nano zine oxide.
Experimental example 2
Formula: base polyurethane prepolymer for use as: 83; Dimethicone: 2; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 3
Formula: base polyurethane prepolymer for use as: 82; Dimethicone: 3; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 4
Formula: base polyurethane prepolymer for use as: 81; Dimethicone: 4; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 5
Formula: base polyurethane prepolymer for use as: 80; Dimethicone: 5; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 6
Formula: base polyurethane prepolymer for use as: 79; Dimethicone: 6; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 7
Formula: base polyurethane prepolymer for use as: 78; Dimethicone: 7; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 8
Formula: base polyurethane prepolymer for use as: 77; Dimethicone: 8; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 9
Formula: base polyurethane prepolymer for use as: 76; Dimethicone: 9; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 10
Formula: base polyurethane prepolymer for use as: 75; Dimethicone: 10; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 11
Formula: base polyurethane prepolymer for use as: 74; Dimethicone: 11; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 12
Formula: base polyurethane prepolymer for use as: 73; Dimethicone: 12; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 13
Formula: base polyurethane prepolymer for use as: 72; Dimethicone: 13; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 14
Formula: base polyurethane prepolymer for use as: 71; Dimethicone: 14; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Experimental example 15
Formula: base polyurethane prepolymer for use as: 70; Dimethicone: 15; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Comparative example 1
Formula: base polyurethane prepolymer for use as: 85; Diglycol: 2; Trimethylolpropane: 2; O-phthalic acid dibutyl ester: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 3.
Polyurethane coating after the modification of experimental example 1 ~ experimental example 15 is made into the coated film after 0.5mm.
The coated film of experimental example 1 ~ experimental example 15 mades is done to thermal weight loss test, and experimental result is as follows:
| ? | Experimental example 1 | Experimental example 2 | Experimental example 3 | Experimental example 4 | Experimental example 5 | Experimental example 6 | Experimental example 7 | Experimental example 8 |
| Thermal response start temperature (℃) | 222.1 | 227.3 | 232.5 | 237.9 | 243.6 | 248.5 | 252.4 | 255.3 |
| Thermal response final temperature (℃) | 615.2 | 630.5 | 644.3 | 659.2 | 670.0 | 684.2 | 698.3 | 704.9 |
| ? | Experimental example 9 | Experimental example 10 | Experimental example 11 | Experimental example 12 | Experimental example 13 | Experimental example 14 | Experimental example 15 | Comparative example 1 |
| Thermal response start temperature (℃) | 256.5 | 262.4 | 271.7 | 277.8 | 273.5 | 280.1 | 289.2 | 221.5 |
| Thermal response final temperature (℃) | 724.6 | 733.2 | 741.8 | 751.4 | 757.3 | 752.9 | 768.8 | 614.7 |
From experimental data, can reach a conclusion, along with adding of dimethicone, after modification, the heat resistance of polyurethane coating improves constantly, and proves that the stable on heating scheme that adopts dimethyl-silicon oil modified urethanes to be coated with is practical.
The coated film of experimental example 1 ~ experimental example 15 mades is done to hot strength test, and experimental result is as follows:
| ? | Experimental example 1 | Experimental example 2 | Experimental example 3 | Experimental example 4 | Experimental example 5 | Experimental example 6 | Experimental example 7 | Experimental example 8 |
| Hot strength (Mpa) | 1.61 | 1.75 | 1.96 | 2.05 | 2.11 | 2.17 | 2.21 | 2.29 |
| ? | Experimental example 9 | Experimental example 10 | Experimental example 11 | Experimental example 12 | Experimental example 13 | Experimental example 14 | Experimental example 15 | Comparative example |
| Hot strength (Mpa) | 2.08 | 1.91 | 1.87 | 1.75 | 1.68 | 1.65 | 1.61 | 1.46 |
From experimental data, can see, the hot strength of experimental example 7, experimental example 8, experimental example 9 coatings is higher, according to interpretation reason, owing to adding a small amount of dimethicone, base polyurethane prepolymer for use as is by carrying out block or grafting with dimethicone, and the hot strength of the polyurethane coating after modification improves constantly.But after block or grafting reach capacity, continue to add dimethicone, organosilicon deposits with micromolecular form, because intermolecular active force is far smaller than the active force in polymer molecule, therefore, the hot strength of smearing declines.Therefore the best proportioning that can determine the weight portion that use organic silicon modified polyurethane performed polymer adds is 7 ~ 8 parts.
Experimental example 16
Formula: base polyurethane prepolymer for use as: 77; Dimethicone: 8; Epoxy resin: 5 chain extenders: 2; Crosslinking agent: 1; Plasticizer: 4; Catalyst: 1; Defoamer: 2; Nano zine oxide: 5.
Experimental example 16 and experimental example 8, experimental example 13 can be reached a conclusion, the heat resistance of entering the composite modified polyurethane coating of organosilicon and epoxy resin is with respect to unmodified or use single organic-silicon-modified, its heat resistance has obtained significantly improving, and improves the shortcoming of the saturated rear reduction polyurethane coating mechanical property of single use dimethicone reaction.But along with the increase of epoxy resin content, the viscosity of epoxy resin modification polyurethane coating increases, and too high viscosity is unfavorable to industrial production, and the addition of suitable epoxy resin should not surpass 10 weight portions.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (4)
1. a mobile phone film, is comprised of basement membrane and the polyurethane coating of pet material, and described polyurethane coating is coated on described pet membrane surface, it is characterized in that, described polyurethane coating is made by following weight portion raw material:
Base polyurethane prepolymer for use as: 70 ~ 84;
Dimethicone: 1 ~ 15;
Epoxy resin: 1 ~ 10;
Chain extender: 2;
Crosslinking agent: 2;
Plasticizer: 4;
Catalyst: 1;
Defoamer: 2;
Filler: 1 ~ 5.
2. mobile phone film as claimed in claim 1, is characterized in that, described polyurethane coating composition is made by following weight portion raw material:
Base polyurethane prepolymer for use as: 75 ~ 78;
Dimethicone: 7 ~ 10;
Epoxy resin: 3 ~ 6;
Chain extender: 2;
Crosslinking agent: 2;
Plasticizer: 4;
Catalyst: 1;
Defoamer: 2;
Filler: 1 ~ 5.
3. mobile phone film as claimed in claim 1, is characterized in that, described polyurethane coating composition is made by following weight portion raw material:
Base polyurethane prepolymer for use as: 75;
Dimethicone: 10;
Epoxy resin: 5;
Chain extender: 2;
Crosslinking agent: 2;
Plasticizer: 4;
Catalyst: 1;
Defoamer: 2;
Filler: 1 ~ 5.
4. the arbitrary mobile phone film as described in claim 1 ~ 3, is characterized in that, described chain extender is diglycol, and described crosslinking agent is trimethylolpropane, and described plasticizer is o-phthalic acid dibutyl ester, and described filler is nano zine oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310612951.XA CN103640292A (en) | 2013-11-27 | 2013-11-27 | Mobile phone film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612951.XA CN103640292A (en) | 2013-11-27 | 2013-11-27 | Mobile phone film |
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| CN103640292A true CN103640292A (en) | 2014-03-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118180A (en) * | 2014-06-27 | 2014-10-29 | 太仓展新胶粘材料有限公司 | Protective film |
| CN104129134A (en) * | 2014-08-01 | 2014-11-05 | 苏州袭麟光电科技产业有限公司 | Anti-aging protective film |
| CN104149430A (en) * | 2014-08-01 | 2014-11-19 | 苏州袭麟光电科技产业有限公司 | Antistatic protective membrane |
| CN104149450A (en) * | 2014-08-01 | 2014-11-19 | 苏州袭麟光电科技产业有限公司 | Anti-static release film and preparation method thereof |
| CN109913114A (en) * | 2019-03-21 | 2019-06-21 | 江苏海事职业技术学院 | A kind of nano modification composite polyurethane ship topcoat paint and preparation method thereof |
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| CN102963097A (en) * | 2012-11-21 | 2013-03-13 | 深圳市宏瑞新材料科技有限公司 | Protective film with PU (polyurethane) adhesive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118180A (en) * | 2014-06-27 | 2014-10-29 | 太仓展新胶粘材料有限公司 | Protective film |
| CN104129134A (en) * | 2014-08-01 | 2014-11-05 | 苏州袭麟光电科技产业有限公司 | Anti-aging protective film |
| CN104149430A (en) * | 2014-08-01 | 2014-11-19 | 苏州袭麟光电科技产业有限公司 | Antistatic protective membrane |
| CN104149450A (en) * | 2014-08-01 | 2014-11-19 | 苏州袭麟光电科技产业有限公司 | Anti-static release film and preparation method thereof |
| CN109913114A (en) * | 2019-03-21 | 2019-06-21 | 江苏海事职业技术学院 | A kind of nano modification composite polyurethane ship topcoat paint and preparation method thereof |
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Application publication date: 20140319 |