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Gum polyurethane protective film and preparation method thereof

A polyurethane base film, polyurethane technology, used in polyurea/polyurethane coatings, coatings, epoxy coatings, etc., can solve problems such as poor weather resistance, poor surface friction resistance, and increase product use costs, and achieve Excellent scrub resistance, high adsorption, high mechanical strength

Inactive Publication Date: 2017-05-31
ZHEJIANG SHICHUANG OPTICAL FILM MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing multilayer films containing polyurethane material layers are widely used in the automotive industry, but their surface has poor friction resistance and weather resistance, and needs to be replaced regularly after a certain period of use, which increases the use cost of the product

Method used

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  • Gum polyurethane protective film and preparation method thereof
  • Gum polyurethane protective film and preparation method thereof
  • Gum polyurethane protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of the adhesive polyurethane protective film of this example comprises the following steps: on the thermoplastic polyurethane (TPU) base film that has adhesive back, coat photocurable composition, ultraviolet light (30mW / cm 2 ) irradiated and cured for 30s;

[0031] The photocurable composition includes the following components in parts by weight:

[0032]

[0033] The structural formula of this polyurethane acrylate is:

[0034]

[0035] Among them, m=3, n=4, R 1 for R 2 for -CH 2 CH 2 CH 2 -, R 3 for R 4 for -CH 2 CH 2 -, R 5 for -CH 3 .

[0036] The structural formula of this bisphenol A epoxy acrylic resin is:

[0037] Among them, R 1 is a methyl group, and R is a group with the following structure: n is 2.

[0038] The fluorine-modified oligomer is BoltornH30 hyperbranched polyester from PeStorp Company modified with pentafluoropentanethiol.

[0039] The multifunctional acrylate is trimethylolpropane triacrylate....

Embodiment 2

[0048] The preparation method of the adhesive polyurethane protective film of the present example comprises the following steps: on the thermoplastic polyurethane (TPU) base film that has adhesive back, coat photocurable composition, ultraviolet light (35mW / cm 2 ) irradiated and cured for 20s;

[0049] The photocurable composition includes the following components in parts by weight:

[0050]

[0051]

[0052] The structural formula of this polyurethane acrylate is:

[0053]

[0054] Among them, m=5, n=3, R 1 for R 2 for -CH 2 CH 2 CH 2 -, R 3 for R 4 for -CH 2 CH 2 -, R 5 for H.

[0055] The structural formula of this bisphenol A epoxy acrylic resin is:

[0056] Among them, R 1 is hydrogen, and R is a group with the following structure: n is 3.

[0057] The fluorine-modified oligomer is Boltorn P500 hyperbranched polyether from PeStorp Company modified with pentafluoropentanethiol.

[0058] The multifunctional acrylate is pentaerythritol triacr...

Embodiment 3

[0067] The preparation method of the adhesive polyurethane protective film of the present example comprises the following steps: on the thermoplastic polyurethane (TPU) base film that has adhesive back, coat photocurable composition, ultraviolet light (40mW / cm 2 ) irradiated and cured for 5s;

[0068] The photocurable composition includes the following components in parts by weight:

[0069]

[0070] The structural formula of this polyurethane acrylate is:

[0071]

[0072] Among them, m=6, n=2, R 1 for R 2 for -CH 2 CH 2 CH 2 -, R 3 for R 4 for -CH 2 CH 2 -, R 5 for -CH 3 .

[0073] The structural formula of this bisphenol A epoxy acrylic resin is:

[0074] Among them, R 1 is a methyl group, and R is a group with the following structure: n is 4.

[0075] The fluorine-modified oligomer is DSM Hybrane B.V. company HybranePS2550 hyperbranched polyamide modified with pentafluoropentanethiol.

[0076] The multifunctional acrylate is pentaerythritol te...

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Abstract

The invention discloses a gum polyurethane protective film and a preparation method thereof. The preparation method comprises the following steps of coating a thermoplastic polyurethane base film with gum with a photocurable composition and carrying out ultraviolet radiation curing, wherein the photocurable composition comprises the following components in parts by weight: 10-20 parts of urethane acrylate, 10-20 parts of bisphenol A epoxy acrylate resin, 2-4 parts of fluorine-modified oligomer, 6-10 parts of multifunctional acrylic ester, 1-3 parts of polyether polyol and 1-2 parts of a photoinitiator. The preparation method of the gum polyurethane protective film is simple; the prepared product is good in scratch resistance; and a coating has relatively good hydrophobic and oleophobic properties and good weather resistance.

Description

technical field [0001] The invention relates to the fields of chemical materials and environmental protection, in particular to an adhesive-backed polyurethane protective film and a preparation method thereof. Background technique [0002] Existing multilayer films containing polyurethane material layers are widely used in the automotive industry, but their surface has poor friction resistance and weather resistance, and needs to be replaced regularly after a certain period of use, which increases the use cost of the product. Contents of the invention [0003] The object of the present invention is to provide a protective film of adhesive-backed polyurethane and a preparation method thereof in order to overcome the above-mentioned defects in the prior art. The preparation method of the adhesive-backed polyurethane protective film of the invention is simple, and the prepared product has good scratch resistance, and the coating has better hydrophobic and oleophobic propertie...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D175/16C09D4/06C09D7/12C08J7/04
CPCC09D163/10C08J7/04C08J2363/10C08J2471/02C08J2475/16C08L2205/035C08L2312/00C09D4/06C09D7/63C09D7/65C09D175/16C08F220/20C08L75/16C08L71/02C08L71/00C08K5/07C08L77/00C08L63/10C08L67/00C08K5/5397
Inventor 张红生
Owner ZHEJIANG SHICHUANG OPTICAL FILM MFG
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