Temperature-sensitive discoloring pressure-sensitive adhesive

A temperature-sensitive discoloration and pressure-sensitive adhesive technology, applied in the field of pressure-sensitive adhesives, can solve the problem of lack of temperature-sensitive discoloration performance of pressure-sensitive adhesive tapes, and achieve the effect of convenient use, moderate viscosity and peeling degree

Inactive Publication Date: 2020-06-19
安徽富印新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a temperature-sensitive color-changing pressure-sensitive adhesive and a temperature-sensitive c...

Method used

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  • Temperature-sensitive discoloring pressure-sensitive adhesive
  • Temperature-sensitive discoloring pressure-sensitive adhesive
  • Temperature-sensitive discoloring pressure-sensitive adhesive

Examples

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preparation example Construction

[0021] The preparation method of the allyl alcohol complex is as follows: first vacuumize the polyoxypropylene alcohol at 120° C. to remove water for 30 minutes. Then, under the atmosphere of nitrogen protection, polyoxypropylene alcohol is added dropwise to excess diisocyanate (-NCO and -OH group molar ratio is 2:1) while stirring, and a small amount of catalyst dibutyltin dilaurate is added, The reaction temperature is controlled at 90-100°C. After 1 hour of reaction, the heating is stopped and the temperature is lowered to discharge the material to obtain the allyl alcohol complex.

[0022] The temperature-sensitive color-changing pressure-sensitive adhesive prepared by the formula in the following table was then coated on the substrate to prepare the temperature-sensitive color-changing pressure-sensitive adhesive tape of Examples 1-12. The temperature-sensitive color-changing pressure-sensitive adhesive formula of specific embodiment is as follows:

[0023]

[0024] I...

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Abstract

The invention provides a temperature-sensitive discoloring pressure-sensitive adhesive. The formula comprises the following components: 50-70 parts by weight of 2-ethylhexyl acrylate, 10-20 parts by weight of a polyoxyethylene-polyoxybutylene-polyoxyethylene block copolymer, 5-10 parts by weight of an allyl alcohol complex, 1-10 parts by weight of fumed silica, 1-10 parts of 1-hydroxycyclohexyl phenyl ketone, 1-10 parts of dodecanethiol, 10-20 parts of N, N'-methylene bisacrylamide, 1-10 parts of N, N, N', N'-tetramethylethylenediamine, 1-10 parts of ethylene glycol dimethacrylate, 2-8 parts of calcium nitrate, 1-5 parts by weight of 2-ethylanthraquinone, and 2-10 parts by weight of a compound I. According to the temperature-sensitive discoloring adhesive tape, the discoloring temperatureranges from 60 DEG C to 100 DEG C, discoloring does not occur at the normal temperature, and discoloring can occur only after temperature treatment at the temperature higher than 55 DEG C.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesives, and relates to a temperature-sensitive color-changing pressure-sensitive adhesive. Background technique [0002] With the continuous iterative update of electronic products, consumer electronics and automotive electronic products are gradually moving towards the direction of high frequency, high current, low power consumption, low cost, and thinness. Power inductors have the characteristics of fast production speed, high degree of automation, and stable electrical properties. Several advantages, widely used in electronics; one of the earliest examples of removable pressure sensitive adhesives is masking tape. The original application of masking tape was to protect the paint coating when the body was painted. Masking tape was developed to peel cleanly from the car body without damaging the fresh coat of paint. Because the fresh paint layer needs to go through the paint-bakin...

Claims

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Application Information

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IPC IPC(8): C09J4/06C09J4/02C09J11/04C09J11/06C09J7/38
CPCC09J4/06C09J11/04C09J11/06C09J2203/306C09J7/385
Inventor 徐振东韩奎一
Owner 安徽富印新材料股份有限公司
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