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Glue breaking and scratch resistant paint surface protective membrane and preparation method thereof

An anti-scratch and protective film technology, which is applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc., can solve the problems affecting the adhesion and transparency of the film, and improve the anti-scratch performance And water repellent, oil repellent, acid and alkali resistance, reducing hydrolysis aging, and resisting tensile fracture

Active Publication Date: 2015-06-10
滁州云林数码影像耗材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the paint surface is not flat during the process of sticking the car film, the pressure-sensitive adhesive on the film is stretched, and the pressure-sensitive adhesive may break during the stretching process, which seriously affects the adhesion of the film. and transparency

Method used

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  • Glue breaking and scratch resistant paint surface protective membrane and preparation method thereof
  • Glue breaking and scratch resistant paint surface protective membrane and preparation method thereof
  • Glue breaking and scratch resistant paint surface protective membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A preparation method for an anti-glue-breaking and anti-scratch paint surface protective film, comprising the following steps:

[0057] 1) Preparation of anti-scratch polyurethane film

[0058] The synthesis of a, 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde;

[0059] Mix 3,3,3-trifluoropropanal and NaOH solution with a concentration of 2mol / L, the mass ratio of 3,3,3-trifluoropropanal and NaOH solution is 1:5, react, and the reaction temperature is 40°C , the reaction time is 2h, separated and purified to obtain 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde, the structural formula is:

[0060]

[0061] b. Synthesis of fluorine-containing silicon dialdehydes;

[0062] 3-Hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde was then combined with 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasiloxane di Alcohol added to acetone, 3-hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde and 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasilyl The molar ratio of oxanediol is 3:1, the mass rati...

Embodiment 2

[0082] A preparation method for an anti-glue-breaking and anti-scratch paint surface protective film, comprising the following steps:

[0083] 1) Preparation of anti-scratch polyurethane film

[0084] The synthesis of a, 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde;

[0085] Mix 3,3,3-trifluoropropanal and NaOH solution with a concentration of 4mol / L, the mass ratio of 3,3,3-trifluoropropanal and NaOH solution is 1:7, react, and the reaction temperature is 50°C , the reaction time is 3h, separated and purified to obtain 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde, the structural formula is:

[0086]

[0087] b. Synthesis of fluorine-containing silicon dialdehydes;

[0088] 3-Hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde was then combined with 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasiloxane di Alcohol added to acetone, 3-hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde and 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasilyl The molar ratio of oxanediol is 4:1, the mass rati...

Embodiment 3

[0108] A preparation method for an anti-glue-breaking and anti-scratch paint surface protective film, comprising the following steps:

[0109] 1) Preparation of anti-scratch polyurethane film

[0110] The synthesis of a, 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde;

[0111] Mix 3,3,3-trifluoropropanal and NaOH solution with a concentration of 3mol / L, the mass ratio of 3,3,3-trifluoropropanal and NaOH solution is 1:6, react, and the reaction temperature is 45°C , the reaction time is 2.5h, separated and purified to obtain 3-hydroxyl-2,4-bis(trifluoromethyl)-butyraldehyde, the structural formula is:

[0112]

[0113] b. Synthesis of fluorine-containing silicon dialdehydes;

[0114] 3-Hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde was then combined with 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasiloxane di Alcohol added to acetone, 3-hydroxy-2,4-bis(trifluoromethyl)-butyraldehyde and 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasilyl The molar ratio of oxanediol is 3.5:1, the mass ...

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Abstract

The invention relates to a glue breaking and scratch resistant paint surface protective membrane and a preparation method thereof. The glue breaking and scratch resistant paint surface protective membrane is prepared from the following components including a scratch resistant polyurethane membrane, a glue breaking resistant pressure sensitive adhesive and a release paper, wherein the scratch resistant polyurethane membrane is prepared by the following steps: carrying out surface modification on one surface of a polyurethane membrane, and introducing a chain segment containing fluorine and silicon on the surface of a polyurethane membrane; in the using process, the surface after surface modification faces outside and is directly contacted with air, so that the scratch, acid and alkali resistances, water and oil repellency and the like of the polyurethane membrane are greatly improved, hydrolysis and ageing of the polyurethane membrane in the using process are lowered, the protection performance is improved, and the service life is prolonged; the glue breaking resistant pressure sensitive adhesive is prepared by the following steps: with acrylic acid polytetrahydrofuran ester as a functional monomer, carrying out copolymerization on the functional monomer, a soft monomer and a hard monomer and is capable of well resisting tensile fracture, so that the glue breaking and scratch resistant paint surface protective membrane can be well applied to the field of automobile membrane sticking.

Description

technical field [0001] The invention relates to a paint surface protection film and a preparation method thereof, in particular to an anti-glue breaking and anti-scratch paint surface protection film and a preparation method thereof. Background technique [0002] Since the birth of automobiles, human pursuit of automobile maintenance has never stopped. In order to keep the car as bright as new, people have thought of many ways, and waxing, which improves the brightness of the paint surface and reduces the damage of the paint surface, was born. In order to pursue a longer-term and effective protection effect, there has been the emergence of sealing glaze and coating technology. But with the development of science and technology, we have more and more requirements for car body maintenance, which should be simpler, more practical, and more fashionable, so the body paint film was born along with the trend. [0003] The currently used car paint film is made of PVC film, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08C08J7/18C08L75/04C08F220/18C08F220/28C08F220/56
Inventor 葛允林张曙明耿有为
Owner 滁州云林数码影像耗材有限公司