The role of softener in adhesive

Softener is a can make the rubber soft offer with jing, the performance of it, not only improves the raw rubber of all kinds of chelating agent (especially the powder compound) infiltration ability, make solid JingDuan when mixing, the quality of mixing rubber evenly, and, due to the softness of the rubber increase also processes to reduce the power consumption, easy rolling at the same time, pressure, and sulfide easily when the full model. Especially for synthetic rubber processing is more important.

Softener to join, in improving the raw rubber processing performance at the same time, also make some physical and mechanical properties of the rubber change, for example: usually reduce the hardness of vulcanized rubber, elongation increased, and for rubber strength, adhesion, cold resistant, aging resistant performance impact varies with the type of the softener used is different.

According to the role of dedicating agent in raw rubber, it can be divided into two categories: all the dedicating agent and false softener.

It is soluble in raw rubber and can make rubber expand, so it can be made into plastic rubber and the most flexible vulcanized rubber. And false softener OIj can't dissolve in raw rubber, and can't make rubber expansion or just can make the rubber has very small, it's hard to with raw rubber softener mixture evenly, and usually 10 products surface, make its physical and mechanical properties of vulcanizates also tend to be low, but due to the effect of leaching away of the oxidizing agent on adhesive, so get softness larger rubber.

Raw rubber softening process, the principle on afl8 is interpreted as by sacrificing the inhibitor molecular infiltration into the rubber molecules more, push 0 section adjacent molecules to the activity of softener base surrounded by rubber molecules active group, which reduces the raw rubber molecules in the Jane interaction force, increases the molecular wing section of thermal motion and molecular Jane's relative movement. So have fun to the requirement of good softener, obviously, according to the principle of similar miscibility, softener must have active group of molecular biological structure, and the active group active group with rubber molecules must also very similar, no Nil will not be able to reduce the raw rubber molecules in Jane's forces, but also offer impossible to obtain the effect of the rubber. The most widely used softeners usually have the following active groups:

The role of softener in adhesive

In addition, softeners should be chemically stable and have low volatility in the application range. It is not easy to eject the surface of products and does not reduce the physical and mechanical properties of vulcanized rubber.