High-temperature-resisting pressure-sensitive adhesive for adhesive tape, adhesive tape and preparation process

A pressure-sensitive adhesive and high-temperature-resistant technology, which is applied in the direction of adhesives, natural rubber adhesives, non-polymer adhesive additives, etc., can solve the problems of poor peeling performance, high temperature resistance, high production cost, and low grafting efficiency , to achieve the effects of improved temperature resistance and aging resistance, reduced preparation cost, and simple preparation process

Active Publication Date: 2013-09-18
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Description
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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 pressure sensitive adhesives and the high cost of preparation, its use is greatly restricted
[0004] At present, there have been a small number of technical disclosures related to high-temperature resistant masking tapes, mainly including: a 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. Including one of silicone glue, phenolic resin glue, urea-formaldehyde resin glue, heat-resistant epoxy glue and polyimide glue. Although the temperature resistance of the masking tape is improved, its initial adhesion is poor
For example, the Chinese patent with the publication number CN102226068A discloses a masking paper adhesive and its products. Although the adhesive is more environmentally friendly, it has poor peeling performance and high temperature resistance.
For example, the Chinese patent with the authorized announcement number CN202220152U discloses the pro...

Method used

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  • High-temperature-resisting pressure-sensitive adhesive for adhesive tape, adhesive tape and preparation process

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preparation example Construction

[0047] The embodiment of the present invention also discloses a method for preparing the above-mentioned high-temperature-resistant pressure-sensitive adhesive for adhesive tape, the operation steps of which are as follows:

[0048] a) Mix the main rubber and auxiliary material additives, and knead them in an open mill or internal mixer to obtain a kneaded product; preferably, the auxiliary material additives can be mixed with the main rubber in different periods of time to improve the effect of the auxiliary material additives on the main rubber Effect;

[0049] b), mixing the kneaded product obtained in the above step a) with a solvent, and dissolving the kneaded product in the solvent;

[0050] c), during the process of dissolving the kneaded product in the above step b), add a tackifier and a plasticizer to the kneaded product, stir until completely dissolved, and obtain a pressure-sensitive adhesive;

[0051] d), adding a curing agent to the pressure-sensitive adhesive o...

Embodiment 1

[0064] A high-temperature-resistant pressure-sensitive adhesive for adhesive tapes, including main rubber, auxiliary material additives, tackifiers, plasticizers, solvents and curing agents;

[0065] The preparation method of the high temperature-resistant pressure-sensitive adhesive for the adhesive tape of the present embodiment 1, its operation steps are:

[0066] a) The main rubber composed of 1kg natural rubber smoked sheet rubber, 0.33kg styrene-butadiene rubber and the auxiliary materials composed of 6.6g zinc oxide, 53g titanium dioxide, 13.3g stannous chloride dihydrate, 10.6g anti-aging agent (2462) The additives are mixed, and the triangular bag is made 6-9 times on an open mill or an internal mixer to obtain a mixture, and the mixture is cut into small pieces;

[0067] b) Take 100g of the above kneaded mixture, mix it with 233g of toluene (solvent), and dissolve the mixture in toluene;

[0068] c), in the process of dissolving the kneaded product in the above step...

Embodiment 2

[0077] A high-temperature-resistant pressure-sensitive adhesive for adhesive tapes, including main rubber, auxiliary material additives, tackifiers, plasticizers, solvents and curing agents;

[0078] The preparation method of the high temperature resistant pressure-sensitive adhesive for the adhesive tape of the present embodiment 2, its operation steps are:

[0079] a) The main rubber composed of 1kg natural rubber smoked sheet rubber, 0.33kg styrene-butadiene rubber and 6.6g zinc oxide, 53g alumina powder, 13.3g stannous chloride dihydrate, 10.6g anti-aging agent (2462) The auxiliary materials and additives are mixed, and the triangular bag is made 6-9 times on an open mill or an internal mixer to obtain a mixture, and the mixture is cut into small pieces;

[0080] b) Take 100g of the above kneaded mixture, mix it with 233g of toluene (solvent), and dissolve the mixture in toluene;

[0081] c), during the process of dissolving the kneaded product in the above step b), add a...

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Abstract

The invention discloses a high-temperature-resisting pressure-sensitive adhesive for an adhesive tape, the adhesive tape and a preparation process. The high-temperature-resisting pressure-sensitive adhesive comprises main body rubber, an auxiliary material additive, a tackifying agent, a plasticizer, a solvent and a curing agent, wherein the main body rubber is composed of natural rubber and/or synthetic rubber, the auxiliary material additive comprises stannous chloride dihydrate and an anti-aging agent, mass mole ratios of the stannous chloride dihydrate and the anti-aging agent to the main body rubber are 0.2:100-8:100 and 0.1:100-10:100 respectively, the mass mole ratio of the tackifying agent to the main body rubber is 10:100-200:100, and the mass mole ratio of the plasticizer to the main body rubber is 5:100-40:100. The high-temperature-resisting pressure-sensitive adhesive is excellent in initial adhesive performance, high in cohesion, good in stripping performance, high in high-temperature resistance, especially applicable to preparation of masking tapes and capable of greatly facilitating the application of the masking tapes in high-temperature environments.

Description

technical field [0001] The invention belongs to the field of adhesive tape preparation, and in particular relates to a high-temperature-resistant pressure-sensitive adhesive for an adhesive tape, an adhesive tape and a preparation method, and is especially suitable for preparing masking tape. Background technique [0002] The tape is mainly composed of a substrate and a layer of adhesive coated on one or both surfaces of the substrate. By forming a bond between the adhesive molecules on the substrate and the surface molecules of the article, the tape is only adhered to on the surface of the item. According to the substrate material, the tape can be divided into kraft paper tape, sealing tape, stationery tape, masking tape, cloth tape, aluminum foil tape, etc. Among them, masking tape (also known as masking pressure-sensitive tape) is made of masking paper and pressure-sensitive adhesive as the main raw materials. The roll-shaped tape made has the characteristics of high te...

Claims

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Application Information

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IPC IPC(8): C09J107/00C09J109/06C09J123/16C09J11/04C09J11/06C09J7/04
Inventor 夏有贵吴智华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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