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A kind of high temperature resistant adhesive and masking tape using the same and preparation method thereof

A high temperature resistant, adhesive technology, applied in the direction of adhesive additives, polymer adhesive additives, non-polymer adhesive additives, etc. The effect of improving heat resistance and aging resistance, improving high temperature resistance, and improving aging resistance

Active Publication Date: 2021-03-16
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when it is used in high-temperature baking paint masking, semiconductor component fixing, etc., if the high-temperature resistance of the masking tape cannot meet the use requirements, the masking tape will be damaged due to the cohesion and adhesion of the pressure-sensitive adhesive during use. Degumming, cracking, residual glue, etc. will occur due to the drop of force, which will pollute the surface of the protected object or cause damage to the fixed electronic semiconductor components.
However, the highest resistance of the existing conventional masking tape can only reach 120°C. When the operating environment exceeds 120°C, the existing silicone-type pressure-sensitive adhesive is used as the pressure-sensitive adhesive of the masking tape. It meets the high temperature resistance requirements of masking tape, but due to the poor initial adhesion of silicone-type pressure-sensitive adhesives, silicon pollution will be generated on the surface of electronic products, and the preparation cost is high, so its use is greatly restricted
[0003] At present, there have been a small number of technical disclosures related to high-temperature resistant masking tapes. For example, the Chinese patent with the publication number CN102363718A discloses a high-temperature masking tape, which uses a high-temperature-resistant glue to improve the temperature-resistant performance. One of glue-like glue, phenolic resin glue, urea-formaldehyde resin glue, temperature-resistant epoxy glue and polyimide glue, although it improves the temperature resistance of the masking tape, its initial adhesion is poor
For example, the Chinese patent with the authorized announcement number CN202220152U discloses the production of a masking capacitive tape. This product adopts polyisoprene rubber graft polymerization monomer, and realizes the high temperature resistance of the pressure sensitive adhesive through grafting and crosslinking. performance, the patent does not specifically disclose the graft polymerization process, but judging from the technical content disclosed in the patent, the pressure-sensitive adhesive is the core functional component of the pressure-sensitive adhesive tape, and the graft polymerization method is used to prepare the pressure-sensitive adhesive. The joint density cannot meet the adhesive requirements of pressure-sensitive adhesives, the controllability is poor, and the production cost is extremely high. It is not objective and realistic to plan to promote and apply it in industrial production. It cannot meet the basic premise of the basic adhesive properties and process requirements of pressure-sensitive adhesives. Under these conditions, the high temperature resistance of pressure-sensitive adhesives is even more difficult to achieve, and there are large defects.
The Chinese patent with the publication number CN103305154A uses stannous chloride dihydrate to promote the crosslinking of NR, SBR mixed system and isocyanate to achieve high temperature resistance. Although it solves the problems of adhesion and cohesion under high temperature environment, its The highest temperature resistance is 139°C, and there is still room for further improvement of high temperature resistance

Method used

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  • A kind of high temperature resistant adhesive and masking tape using the same and preparation method thereof
  • A kind of high temperature resistant adhesive and masking tape using the same and preparation method thereof
  • A kind of high temperature resistant adhesive and masking tape using the same and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of mixed rubber composition A: 1000g of natural tobacco sheet rubber is put into the open mill for refining, the refining temperature is 45±5°C, and 70g of zinc oxide, 10g of stearic acid, 15g of antioxidant, Light stabilizer 5g, put in 330g of styrene-butadiene rubber and kneading in the fourth time, and the kneading is finished when the kneading reaches the eighth time.

[0030] 2) Preparation of high temperature resistant adhesive composition: a) put into 770g of toluene in a 2000ml reaction flask, simultaneously put in 4.7g of white oil, 60g of modified hydrogenated petroleum resin, 4.7g of brominated alkyl phenolic resin, coumarone resin 4.7g, 0.5g vulcanization accelerator, 1g zinc resinate, rotating speed 200rpm, stir for 10min to dissolve, put into sliced ​​rubber compound A100g, stir for 8h and let it dissolve to obtain pressure-sensitive adhesive;

[0031] b) adding 0.5 g of cross-linking agent benzoyl peroxide to the pressure-sensitive adhesive...

Embodiment 2

[0034] 1) Preparation of mixed rubber composition A: 1000g of natural tobacco sheet rubber is put into the open mill for refining, the refining temperature is 45±5°C, and 70g of zinc oxide, 10g of stearic acid, 15g of antioxidant, Light stabilizer 5g, put in 330g of styrene-butadiene rubber and kneading in the fourth time, and the kneading is finished when the kneading reaches the eighth time.

[0035] 2) Preparation of high temperature resistant adhesive composition: a) put into 770g of toluene in a 2000ml reaction flask, simultaneously put in 15g of white oil, 60g of modified hydrogenated petroleum resin, 15g of brominated alkyl phenolic resin, 10g of coumarone resin, 1 g of vulcanization accelerator, 2 g of zinc resinate, rotating speed of 200 rpm, stirred for 10 min to be dissolved, put into 100 g of sliced ​​rubber compound A, stirred for 8 hours and waited for it to dissolve to obtain a pressure-sensitive adhesive solution;

[0036] b) adding 1 g of cross-linking agent b...

Embodiment 3

[0039] 1) Preparation of mixed rubber composition A: 1000g of natural tobacco sheet rubber is put into the open mill for refining, the refining temperature is 45±5°C, and 70g of zinc oxide, 10g of stearic acid, 15g of antioxidant, Light stabilizer 5g, put in 330g of styrene-butadiene rubber and kneading in the fourth time, and the kneading is finished when the kneading reaches the eighth time.

[0040] 2) Preparation of high temperature resistant adhesive composition: a) put into 770g of toluene in a 2000ml reaction flask, simultaneously put in 19.5g of white oil, 60g of modified hydrogenated petroleum resin, 19.5g of brominated alkyl phenolic resin, coumarone resin 14.6g, 1.5g of vulcanization accelerator, 3g of zinc resinate, rotating speed of 200rpm, stirred for 10min to dissolve, put into 100g of sliced ​​rubber compound composition A, stirred for 8h and then dissolved to obtain a pressure-sensitive adhesive;

[0041] b) adding 1.5 g of cross-linking agent benzoyl peroxide...

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Abstract

The invention discloses a high-temperature-resistant adhesive. First, a mixed rubber composition A is provided, and the mixed rubber composition A comprises the following components in parts: 70 partsof natural ribbed smoked sheet; 23 parts of styrene-butadiene rubber; 0.7 part of stearic acid; 4.9 parts of zinc oxide; 1 part of an antioxidant; and 0.3 part of a light stabilizer. The high-temperature-resistant adhesive comprises the following components in percent by mass: 8-12% of the composition A; 5-8% of modified hydrogenated petroleum resin; 0.5-2% of brominated alkyl phenolic resins; 0.5-1.5% of coumarone resin; 0.5-2% of white oil; 0.05-0.1% of a vulcanization accelerator; 0.1-0.3% of zinc resinate; 1-2% of a crosslinking agent; and 75-82% of a solvent. The high-temperature-resistant adhesive adopts a styrene-butadiene rubber and natural ribbed smoked sheet mixing system, shortcomings of aging and stickiness of the natural ribbed smoked sheet and aging and brittleness of the styrene-butadiene rubber are neutralized, and at the same time, the natural ribbed smoked sheet and the styrene-butadiene rubber can participate in crosslinking, so that aging resistance is further improved. The entire system is an environment-friendly adhesive, has no acids or weak acids, is inert, does not corrode an adhered material, and does not affect the function of electronic materials.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and particularly relates to a high temperature resistant adhesive, a masking tape using the adhesive and a preparation method thereof. Background technique [0002] Tape, according to different materials, can be divided into kraft paper tape, sealing tape, stationery tape, masking tape, cloth tape, metal foil tape, etc. Among them, the masking tape is a roll-shaped tape made of masking paper and pressure-sensitive adhesive as the main raw materials, coating pressure-sensitive adhesive on one side of the masking paper and coating anti-sticking material on the other side. It has the characteristics of good chemical resistance, high adhesion, soft adherence and no residue after tearing. Therefore, it is widely used in interior decoration, painting of household appliances, masking of automobile spraying, and fixing of semiconductor components. Because the color separation effect of the masking tap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J107/00C09J109/06C09J161/14C09J11/06C09J11/04C09J11/08C09J7/21
CPCC08K2003/2296C08L2201/08C08L2205/035C09J11/04C09J11/06C09J11/08C09J107/00C09J7/21C09J2301/30C08L9/06C08L57/02C08L61/14C08L45/02C08K13/02C08K5/09C08K3/22
Inventor 夏有贵龙冲周亮
Owner 新纶电子材料(常州)有限公司