Peelable mask and preparation method thereof

A peeling and unsaturated technology, used in adhesives, monocarboxylate copolymer adhesives, graft polymer adhesives, etc. Film is too hard and other problems

Active Publication Date: 2015-06-03
SHENZHEN GLITER PRINTING MATERIALS & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the peelable adhesives in the prior art generally have the following problems: the peelable adhesives of the UV curing system are too high in crosslinking density and the paint film is too hard, resulting in poor adhesion and easy to fall off; non-solvent type peelable adhesives need A large amount of plasticizer is used. When forming a film at high temperature, the plasticizer is easy to migrate to both sides of the paint film, resulting in poor adhesion, heat resistance, etc., and no protective effect. The plasticizer is not friendly to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0066] Prepare polystyrene-polyurethane-unsaturated polyester copolymer, its synthetic steps are:

[0067] (1) Synthesis of unsaturated polyester containing terminal hydroxyl groups

[0068]40 parts of soy oil, 30 parts of fumaric acid, 40 parts of maleic anhydride, 20 parts of phthalic anhydride, 80 parts of ethylene glycol, 100 parts of pentaerythritol, 20 parts of glycerin, 100 parts of cyclohexanone, 2.6 parts of concentrated sulfuric acid Sequentially add to the reaction vessel equipped with electric stirring, water separator, thermometer and electric heating mantle, heat, stir, heat up to 140°C, react for 2.5 hours; heat up to 155°C for 0.5 hour, cool down to 100°C and add 20 parts Propylene glycol (so that the terminal group of the polycondensate is -OH), react for 1 h, and vacuumize to obtain an unsaturated polyester containing terminal hydroxyl groups, cool and set aside.

[0069] (2) Synthesis of Polyurethane Unsaturated Polyester Copolymer

[0070] Take 60 parts o...

Embodiment 1

[0074] The peelable glue contains the following raw materials:

[0075] 28 parts of chlorinated polypropylene-ethylene random copolymer; 25 parts of vinyl chloride-vinyl acetate-acrylate terpolymer; 37 parts of silicone modified acrylate rubber; 30 parts of polystyrene-polyurethane-unsaturated polyester resin 2 parts; 2 parts of pigment; 0.2 part of thixotropic agent; 0.3 part of defoamer; 0.5 part of antioxidant; 40 parts of solvent.

[0076] Its preparation method is:

[0077] 1) Accurately weigh various raw materials;

[0078] 2) Uniformly disperse the main film former and solvent (mass ratio, NMP:PGMEA:MEK=60:20:20) to obtain mixed solution 1;

[0079] 3) Then add pigments, defoamers, antioxidants, and grind with a three-roll mill to obtain a mixed solution 2;

[0080] 4) Then add the thixotropic agent, disperse and discharge evenly.

Embodiment 2

[0082] The peelable glue contains the following raw materials:

[0083] 30 parts of chlorinated polypropylene-ethylene random copolymer; 30 parts of vinyl chloride-vinyl acetate-acrylate terpolymer; 35 parts of silicone modified acrylate rubber; 25 parts of polystyrene-polyurethane-unsaturated polyester resin cellulose acetate butyrate, 10 parts; epoxy resin, 10 parts, closed polyurethane, 15 parts; organotin, 1 part; pigment 3 parts; thixotropic agent, 0.4 part; defoamer, 0.5 part; antioxidant agent, 0.4 parts; solvent 20 parts.

[0084] Its preparation method is:

[0085] 1) Accurately weigh various raw materials;

[0086] 2) uniformly dispersing the main film former and the solvent to obtain a mixed solution 1;

[0087] 3) Then add pigments, defoamers, antioxidants, and secondary film formers, and grind with a three-roll mill to obtain a mixed solution 2;

[0088] 4) Then add the thixotropic agent, disperse and discharge evenly.

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PUM

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Abstract

The invention provides a peelable mask and a preparation method thereof. The peelable mask has properties of adhesion, elasticity, peeling strength, high-temperature resistance and the like, the film forming condition is simple, a film has properties of high adhesion, elasticity, peeling strength, high-temperature resistance and the like, quick and integral peeling can be realized, no residue exists after peeling, and the peelable mask is significant in high-temperature resistance, non-sticky, anti-fogging and high in chemical reagent resistance. The peelable mask takes a chlorinated polypropylene-ethylene random copolymer, a vinyl chloride-vinyl acetate-acrylate terpolymer, polystyrene-polyurethane-unsaturated polyester resin as well as organosilicone modified acrylate rubber as main film forming matters and takes epoxy resin, cellulose acetate butyrate and blocked polyurethane as auxiliary film forming matters.

Description

technical field [0001] The invention relates to a peelable glue and a preparation method thereof, belonging to the field of functional polymer materials. Background technique [0002] With the continuous development of touch screen technology, touch screen mobile phones and tablet PCs are gradually becoming the mainstream of mass consumption. In the process of producing the touch screen, it is necessary to protect the ITO layer of the touch screen against high temperature and acid and alkali corrosion in a specific process. After this process, the protective film needs to be peeled off to proceed to the next process. Therefore, in today's growing demand for touch screens, the need for a peelable protective film that is easy to print, has good adhesion and is easy to peel off, and has good mechanical properties has become more urgent. [0003] In addition to proper adhesion and peelability to the protective base surface, the peelable adhesive also requires the coating film t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/04C09J151/08C09J123/08C09J123/28C09J127/06C09J131/04C09J133/08C09J175/04C09J101/14C09J11/04C09J11/06C09D11/107C09D11/106C09D11/102
Inventor 邢槐泽张国慧
Owner SHENZHEN GLITER PRINTING MATERIALS & EQUIP
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