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What is the role of MQ silicone resin in silicone pressure-sensitive adhesive

Dec 12, 2019

When the ratio of silicone resin to silicone rubber must be, the performance of the adhesive is affected by the number of silanol groups present in the silicone resin and silicone rubber. If the two do not contain silanol functional groups, they cannot be crosslinked by condensation.


MQ silicone resin contains residual silanol functional groups and has a wide glass transition temperature.


Silicone resin is added to the silicone pressure-sensitive adhesive to thicken the silicone rubber. Adhesive tapes made of pressure-sensitive adhesive with a high silicone content (MQ / 107 = 2.5) have good adhesion and 180 ° peeling force, but poor initial adhesion.


When the ratio of silicone resin to silicone rubber is determined, the performance of the adhesive is affected by the number of silanol groups present in the silicone resin and silicone rubber. If the two do not contain silanol functional groups, they cannot be crosslinked by condensation. Therefore, silicone resin must be added to the silicone pressure-sensitive adhesive for thickening.


Adhesive tapes made of high-silicone content (MQ / 107 = 2.5) silicone pressure-sensitive adhesives have a good adhesion and 180 °. Peeling force, but poor initial adhesion. In contrast, in the stickiness test, the pressure-sensitive adhesive with a high 107 silicone rubber content (MQ / 107 = 1.2) has good initial tack at room temperature, but the cohesive force is poor, and the tape will fall off within tens of seconds.


In contrast, in the stickiness test, the pressure-sensitive adhesive with a high 107 silicone rubber content (MQ / 107 = 1.2) has good initial tack at room temperature, but the cohesive force is poor, and the tape will fall off within tens of seconds.


RH-SP6A-Good-Compatibility-Transparent-Phenyl-Resin


Contact:Sharon Song(Sales manager)

Zhejiang Runhe Organosilicone New Material Co.,Ltd(Factory)

Zhejiang Runhe Chemical New Material Co.,Ltd(Exporter)

Tel:+86-571-85092338
Mob:+86-13805735673
Fax:+86-571-87246635
E-mail:sharon@chinarunhe.com

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