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A kind of high temperature resistant pressure sensitive coating material, preparation method and protective film

A pressure-sensitive coating, high temperature resistance technology, applied in pressure-sensitive films/sheets, film/sheet-like adhesives, non-polymer adhesive additives, etc. Poor acid-base performance and other problems, to achieve good high temperature resistance, good stirring effect

Active Publication Date: 2021-07-13
SICHUAN YUXI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the conventional polyacrylate pressure-sensitive adhesive protective film has poor stability, such as poor performance in high temperature resistance, heat and humidity resistance, acid and alkali resistance, etc. The present invention provides a method to solve the above problems High temperature resistant pressure sensitive coating material and protective film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a high temperature resistant pressure sensitive coating protective film, prepared by the following steps:

[0032] Step 1, the raw material composition of the pressure-sensitive coating material:

[0033] The raw materials of pressure-sensitive coating materials include by mass percentage:

[0034] Polyacrylate pressure sensitive adhesive: 50%; Crosslinking agent: 1%; Solvent: 30%; Auxiliary: 19%;

[0035] The crosslinking agent adopts a liquid mixture of hexamethylene diisocyanate and dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate hollow particles; hexamethylene diisocyanate, dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate The mass ratio of the three is: 1:1:5.

[0036] The auxiliary agent adopts ethanol, and the added mass of the auxiliary agent is 38% of the mass of the polyacrylate pressure-sensitive adhesive.

[0037] The outer diameter of the hollow particles is 10mm.

[0038] Described solvent adop...

Embodiment 2

[0050] This embodiment provides a high temperature resistant pressure sensitive coating protective film, prepared by the following steps:

[0051] Step 1, the raw material composition of the pressure-sensitive coating material:

[0052] The raw materials of pressure-sensitive coating materials include by mass percentage:

[0053] Polyacrylate pressure sensitive adhesive: 65%; crosslinking agent: 5%; solvent: 20%; additives: 10%;

[0054] The crosslinking agent adopts a liquid mixture of hexamethylene diisocyanate and dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate hollow particles; hexamethylene diisocyanate, dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate The mass ratio of the three is: 1:1:5.

[0055] The auxiliary agent adopts ethanol, and the added mass of the auxiliary agent is 15% of the mass of the polyacrylate pressure-sensitive adhesive.

[0056] The outer diameter of the hollow particles is 10 mm.

[0057] Described solvent ado...

Embodiment 3

[0069] This embodiment provides a high temperature resistant pressure sensitive coating protective film, prepared by the following steps:

[0070] Step 1, the raw material composition of the pressure-sensitive coating material:

[0071] The raw materials of pressure-sensitive coating materials include by mass percentage:

[0072] Polyacrylate pressure sensitive adhesive: 56%; Crosslinking agent: 2%; Solvent: 29%; Auxiliary: 13%;

[0073] The crosslinking agent adopts a liquid mixture of hexamethylene diisocyanate and dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate hollow particles; hexamethylene diisocyanate, dicyclohexylmethane diisocyanate and diphenylmethane diisocyanate The mass ratio of the three is: 1:1:5.

[0074] The auxiliary agent adopts ethanol, and the added mass of the auxiliary agent is 23% of the mass of the polyacrylate pressure-sensitive adhesive.

[0075] The outer diameter of the hollow particles is 10 mm.

[0076] Described solvent ado...

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Abstract

The invention discloses a high-temperature-resistant pressure-sensitive coating material, a preparation method and a protective film. The raw materials of the pressure-sensitive coating material include: polyacrylate pressure-sensitive adhesive: 50% to 65%; cross-linked Agent: 0.5% to 6%; solvent: 10% to 30%; auxiliary agent: 5% to 20%; the crosslinking agent uses a liquid mixture of hexamethylene diisocyanate and dicyclohexylmethane diisocyanate and diphenyl Methane diisocyanate hollow particles; the outer diameter of the hollow particles is 1 mm to 80 mm; the auxiliary agent is ethanol. In the present invention, by improving the type, proportion and adding state of the isocyanate crosslinking agent, adding additives, and adjusting the overall proportioning relationship of the pressure-sensitive coating material raw materials, the polyacrylate pressure-sensitive adhesive and the isocyanate crosslinking agent are fully Contact and sufficient cross-linking reaction to obtain a protective film with good resistance to high temperature, heat and humidity, and acid and alkali.

Description

technical field [0001] The invention relates to the technical field of display screen protective films, in particular to a high-temperature-resistant pressure-sensitive coating material, a preparation method and a protective film. Background technique [0002] In order to prevent the surface of the electronic product screen from being scratched or worn, which will affect the use effect, a screen protective film is generally pasted on the screen surface of the electronic product. The protective film generally consists of a substrate layer and an adhesive layer coated on the substrate layer. This has high requirements for the adhesive, which can withstand high temperature, strong acid and strong alkali, etc., so as to be able to well protect the local position of the smartphone during the manufacturing process. [0003] In the prior art, during the preparation of the pressure-sensitive coating solution, an isocyanate crosslinking agent (with a highly reactive isocyanate group...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/04C09J11/06C09J7/38C09J7/25
CPCC08K2201/014C09J11/06C09J133/04C09J2433/00C09J2467/006C09J7/255C09J7/385C08K5/29
Inventor 许显成张建军王中正邬艺
Owner SICHUAN YUXI ELECTRONICS TECH CO LTD
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