Release film for car cover, and preparation method thereof

A technology of release film and car cover, applied in the field of release film of car cover and its preparation, can solve the problems of easy scratching, precipitation of plasticizer, high content of plasticizer, avoid injury, good clarity, Long service life effect

Pending Publication Date: 2020-06-30
扬州万润光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used car paint film is made of PVC film, but the content of plasticizer in PVC film is high, and it is prone to plasticizer precipitation, which affects the performance and service life, while soft polyurethane film does not have plasticizer. problem, and there are various types of soft polyurethane, and the film prepared by a certain polymerization of soft polyurethane can meet most of the properties, such as transparency, hardness, tensile strength, etc.
However, soft polyurethane film also has its limitations, such as easy to scratch, hydrolysis, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A release film for car clothing, comprising a PET base layer with a thickness of 50 μm, on which a pressure-sensitive adhesive layer with a thickness of 20 μm, a release layer with a thickness of 10 μm and a protective film with a thickness of 5 μm are sequentially arranged on the PET base layer. layer, the protective layer includes the following parts by weight: 9 parts of benzoic acid esters, 13 parts of turpentine, 1 part of butanone, 6 parts of toluene, 4 parts of nanometer metal oxides, 8 parts of sodium bisulfate and ultraviolet absorbers 2 parts, the release layer includes the following parts by weight: 4 parts of isocyanate curing agent, 20 parts of butyl acetate, 100 parts of prepolymer resin, 5 parts of methyl hydroquinone, 2-hydroxymethyl oxetane 10 parts and 20 parts of dodecyl glycidyl ether, and described pressure-sensitive adhesive layer comprises the material of following weight part: nanoscale SiO 40 parts of powder, 2 parts of epoxy acrylic curing agent...

Embodiment 2

[0029] A release film for car coverings, comprising a PET base layer with a thickness of 75 μm, on which a pressure-sensitive adhesive layer with a thickness of 30 μm, a release layer with a thickness of 20 μm, and a protective film with a thickness of 7 μm are sequentially arranged on the PET base layer. layer, the protective layer includes the following parts by weight: 20 parts of benzoate, 16 parts of turpentine, 4 parts of methyl ethyl ketone, 8 parts of toluene, 8 parts of nanometer metal oxide, 12 parts of sodium bisulfate, ultraviolet absorber 3 parts, the release layer includes the following parts by weight: 7 parts of isocyanate curing agent, 24 parts of butyl acetate, 90 parts of prepolymer resin, 7 parts of methyl hydroquinone, 2-hydroxymethyl oxetane 14 parts of alkane and 25 parts of dodecyl glycidyl ether, the pressure-sensitive adhesive layer includes the following parts by weight: nano-scale SiO2 powder 45 parts, 3 parts of epoxy acrylic curing agent, 28 parts ...

Embodiment 3

[0035] A release film for car clothing, comprising a 100 μm thick PET base layer, on which a 40 μm thick pressure-sensitive adhesive layer, a 30 μm thick release layer and a 10 μm thick protective layer are sequentially arranged, the The protective layer comprises the following substances by weight: 30 parts of benzoate, 20 parts of turpentine, 6 parts of methyl ethyl ketone, 11 parts of toluene, 13 parts of nanometer metal oxide, 17 parts of sodium bisulfate, and 5 parts of ultraviolet absorber. The release layer includes the following parts by weight: 9 parts of isocyanate curing agent, 28 parts of butyl acetate, 100 parts of prepolymerized resin, 10 parts of methyl hydroquinone, 18 parts of 2-hydroxymethyl oxetane and 30 parts of dodecyl glycidyl ether, the pressure-sensitive adhesive layer includes the following parts by weight; nano-scale SiO 50 parts of powder, 5 parts of epoxy acrylic acid curing agent, 32 parts of ethyl acetate, dimethyl diethyl 30 parts of oxysilane. ...

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Abstract

The invention discloses a release film for a car cover, and a preparation method of the release film. The release film comprises a PET base layer, which is sequentially provided with a pressure-sensitive adhesive layer, a release layer and a protective layer, wherein the protective layer comprises benzoate, turpentine, butanone, methylbenzene, nano metal oxide, sodium hydrogen sulfate and an ultraviolet ray absorber, the release layer is prepared from an isocyanate curing agent, butyl acetate, a prepolymer resin, methyl hydroquinone, 2-hydroxymethyl oxetane and dodecyl glycidyl ether, and thepressure-sensitive adhesive layer is prepared from nano-scale SiO2 powder, an epoxy acrylic curing agent, ethyl acetate and dimethyldiethoxysilane. According to the invention, an ultraviolet ray absorber is added in a protective layer, so that ultraviolet ray can be completely blocked, harm of the ultraviolet ray to human bodies is avoided, the service life is long, the definition is good, and a certain explosion-proof effect can be achieved on the automobile glass.

Description

technical field [0001] The invention relates to the technical field of release films, in particular to a release film for car clothing and a preparation method thereof. Background technique [0002] With the development of economy, China has become the world's largest automobile consumer. More and more cars have entered thousands of households. In 2016, the production and sales of passenger vehicles in my country were 24.4207 million and 24.3769 million respectively, which are an important part of the automobile market. Simultaneously rising with the automobile consumption market is the automobile maintenance market and automobile clothing. [0003] Invisible car cover originated in the United States. It was first used on F-4 fighter jets to protect the paint surface of the radome. After 1990, it was expanded to the field of racing to protect sponsor icons, ensure the completeness of the car body when it collides, and prevent debris from splashing. Since 2004, the invisib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D191/00C09D7/61C09D7/48C09D5/20C09J183/04C09J11/06C08L67/02
CPCC08J7/042C08J2367/02C08J2491/00C08K2201/011C09D5/20C09D7/48C09D7/61C09D191/00C09J11/06C09J183/04C08K3/22C08K3/36
Inventor 李刚
Owner 扬州万润光电科技股份有限公司
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