Thermocuring self-repairing paint surface protective film and preparation method thereof

A self-healing, heat-curing technology for adhesive types, pressure-sensitive films/sheets, film/sheet-like adhesives, etc.

Pending Publication Date: 2021-07-06
南阳金牛彩印集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the infinite pursuit of high-end products for color appearance, material texture and protective function, higher requirements are put forward for paint protective film in terms of color, repair durabil

Method used

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  • Thermocuring self-repairing paint surface protective film and preparation method thereof
  • Thermocuring self-repairing paint surface protective film and preparation method thereof
  • Thermocuring self-repairing paint surface protective film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The composition of the self-healing coating includes: furfuryl alcohol modified polyhydroxy acrylate resin I (hydroxyl value ~ 90mg KOH / g) 12%, maleimide modified polyhydroxy acrylate resin II (hydroxyl value ~ 90mg KOH / g) 12% %, polycaprolactone diol (BASF PCL2000) 28%, propylene glycol methyl ether acetate 32%, 1,6-hexamethylene diisocyanate trimer (Covestro DesmodurN3300) 15%, dibutyltin dilaurate catalyst ( American gas Dabco T-12) 0.1%, silicon-containing leveling agent (Silok-354) 0.9%.

[0044] The preparation method of this thermosetting self-healing paint surface protective film is as follows:

[0045] Using the slit coating method, first coat Ashland AROSET 9510H acrylic pressure-sensitive adhesive on a 50μm PET release film A, dry it at 80-110°C, and coat it with optical grade Argotec aliphatic TPU Film lamination to form an acrylic pressure-sensitive adhesive layer with a thickness of 38 μm; apply the self-healing coating prepared above to the other side of...

Embodiment 2

[0047] The composition of the self-healing coating includes: furfurylamine modified polyhydroxy acrylate resin I (hydroxyl value ~ 95mg KOH / g) 10%, maleimide modified polyhydroxy acrylate resin II (hydroxyl value ~ 95mg KOH / g) 10%, polytetrahydrofuran ether diol (BASF PolyTHF2000) 19%, propylene glycol methyl ether acetate / butyl acetate (4:1) 35%, isophorone diisocyanate (Covestro Desmodur I) 25%, octanoic acid Sn catalyst (American gas Dabco T-9) 0.08%, silicon-containing leveling agent (Silok-354) 1.0%.

[0048] The preparation method of this thermosetting self-healing paint surface protective film is as follows:

[0049] Using the slit coating method, first coat Ashland AROSET 9510H acrylic pressure-sensitive adhesive on a 50μm PET release film A, dry it at 80-110°C, and coat it with optical grade Argotec aliphatic TPU Film lamination to form an acrylic pressure-sensitive adhesive layer with a thickness of 35 μm; apply the self-healing coating prepared above to the other s...

Embodiment 3

[0051] The composition of the self-healing coating includes: furfuryl alcohol modified polyhydroxy acrylate resin I (hydroxyl value ~ 90mg KOH / g) 15%, maleimide modified polyhydroxy acrylate resin II (hydroxyl value ~ 90mg KOH / g) 15% %, polytetrahydrofuran ether diol (BASF PolyTHF2000) 12%, butyl acetate / cyclohexanone (3:1) 35%, 1,6-hexamethylene diisocyanate trimer (Covestro Desmodur N3300) 22%, Stannous octoate catalyst (American gas Dabco T-9) 0.1%, antioxidant (BASF TINUVIN B97) 0.9%.

[0052] The preparation method of this thermosetting self-healing paint surface protective film is as follows:

[0053] Using the slit coating method, first coat Ashland AROSET 9510H acrylic pressure-sensitive adhesive on a 50μm PET release film A, dry it at 80-110°C, and coat it with optical grade Argotec aliphatic TPU Film lamination to form an acrylic pressure-sensitive adhesive layer with a thickness of 35 μm; apply the self-healing coating prepared above to the other side of the above ...

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Abstract

The invention provides a thermocuring self-repairing type paint surface protective film and a preparation method thereof. The paint surface protective film is sequentially composed of a release film layer A, a pressure-sensitive adhesive layer, a base material layer, a self-repairing coating and a release film layer B from bottom to top. The self-repairing coating is made of self-repairing thermocuring type modified polyurethane acrylate resin and comprises 10-18% of functionalized acrylic resin I, 10-18% of functionalized acrylic resin II, 12-35% of polymer polyol, 30-50% of a solvent, 15-30% of a curing agent, 0.05-0.2% of a catalyst and 0.3-1.0% of auxiliaries, and the base material is made of optical-grade aliphatic TPU, the pressure-sensitive adhesive is an acrylate adhesive, and the release film layer is a PET silicone oil release film. The paint surface protective film is simple in preparation process and easy for industrial batch production, the self-repairing coating has excellent scratch resistance, self-repairing performance, aging resistance, corrosion resistance, pollution resistance and the like after being thermally cured, and the self-repairing paint surface protective film can be widely applied to the fields of automobile and furniture paint surface protection, electronic equipment screen protection and the like.

Description

technical field [0001] The invention relates to the technical field of functional films, in particular to a thermosetting self-repairing paint surface protection film and a preparation method thereof. Background technique [0002] With the development of society and the advancement and popularization of automobile technology, the number of automobiles is continuously increasing. In 2020, the number of cars in my country will reach 281 million, ranking first in the world with the United States. During the use of the car, there are often situations such as scratches and bumps, sand and gravel impacts, sun and rain, insect excrement and bird droppings, fruit pulp gum erosion, etc., which will cause the original car paint to peel off, age dull, and become brittle. Cracks, corrosion and fading, resulting in increased paint maintenance costs. The common traditional car paint maintenance programs such as waxing, sealing glaze, and crystal plating can only last for about two weeks...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/38C09J133/04C09D175/04C09D5/08
CPCC09J7/25C09J7/385C09J133/04C09D175/04C09D5/08C09J2475/006C09J2203/306
Inventor 程新峰贾小平李君君贾佳李旭阳赵旭峰贾媛媛
Owner 南阳金牛彩印集团有限公司
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