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High-solid-content high-temperature-resistant organic-silicone pressure-sensitive adhesive and preparation method thereof

A silicone pressure-sensitive adhesive, high solid content technology, used in adhesives and other directions, can solve problems such as environmental pollution and human health hazards, and achieve the effect of reducing VOC value and superior environmental protection.

Active Publication Date: 2011-07-20
无锡达美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These substances not only cause relatively serious environmental pollution, but also cause relatively great harm to human health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 290 kg of xylene, 40 kg of NMP, 310 kg of MQ silicone resin and 350 kg of silicone rubber into the reaction kettle, and slowly add 10 kg of dibutyltin dilaurate dropwise after the temperature rises to 130 ° C ~ 135 ° C, dropwise for 2 hours After completion, the reaction was continued at 130° C. to 150° C. for 2 hours, and the silicone pressure-sensitive adhesive of the present invention was obtained after cooling.

Embodiment 2

[0026] Add 300 kg of xylene, 35 kg of NMP, 350 kg of MQ silicone resin and 300 kg of silicone rubber into the reaction kettle, and slowly add 15 kg of dibutyltin diacetate dropwise after the temperature rises to 130°C to 135°C, and the dropwise addition is completed in 2 hours , and then continue to react at 130° C. to 150° C. for 2 hours, and obtain the silicone pressure-sensitive adhesive of the present invention after cooling.

Embodiment 3

[0028] Add 300 kg of xylene, 50 kg of NMP, 340 kg of MQ silicone resin and 290 kg of silicone rubber into the reaction kettle, and slowly add 20 kg of dioctyltin dilaurate dropwise after heating up to 130 ° C ~ 135 ° C, dropwise for 2 hours After completion, the reaction was continued at 130° C. to 150° C. for 2 hours, and the silicone pressure-sensitive adhesive of the present invention was obtained after cooling.

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PUM

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Abstract

The invention discloses a high-solid-content high-temperature-resistant organic-silicone pressure-sensitive adhesive which is prepared by reacting the following components in percentage by weight: 25.0-40.0% of organic silicone rubber, 25.0-40.0% of MQ organic silicone resin, 0.05-5.00% of catalyst and 30.0-40.0% of solvent. The organic-silicone pressure-sensitive adhesive disclosed by the invention can resist high temperature (250-280 DEG C), and the solid content of the organic-silicone pressure-sensitive adhesive is up to 65-70%; and compared with the silanol condensed type high-temperature-resistant organic-silicone pressure-sensitive adhesive system in the existing market, the VOC (volatile organic compound) content of the organic-silicone pressure-sensitive adhesive disclosed by the invention is obviously lowered, and the organic-silicone pressure-sensitive adhesive disclosed by the invention has better environmental protection performance.

Description

technical field [0001] The invention relates to a silicone pressure-sensitive adhesive and a preparation method thereof, more specifically, the invention relates to a high-solid-content high-temperature-resistant silicone pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Silicone pressure-sensitive adhesive is a kind of high-quality and high-grade special pressure-sensitive adhesive in the pressure-sensitive adhesive family. At present, the silicone pressure-sensitive adhesive system suitable for use under high temperature and severe conditions is the silanol condensation type silicone pressure-sensitive adhesive. For example, masking tapes are required in gold plating, hot air leveling and wave soldering processes in the manufacturing process of printed circuit boards (PCBs). These tapes are required not only to be tightly bonded to the PCB in a high temperature environment (250 ° C ~ 280 ° C), but also Moreover, no glue residue is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C08G77/16
Inventor 李国荣王洪张刚
Owner 无锡达美新材料有限公司
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