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Separating agent manufacturer: the role of rubber separating agent in rubber compound
Rubberrelease agentIt is a kind of compounding agent that can make the rubber material have soft performance. Its addition not only improves the infiltration ability of raw rubber to the compounding agent (powder compounding agent should be noted), makes the solid strength short during mixing, and the quality of the compounded rubber uniform, but also reduces the power consumption of the technological process due to the increased softness of the rubber material, and is convenient for calendering, extrusion and vulcanization, which is more important for the processing of synthetic rubber.
release agentAt the same time, it also changes some physical and mechanical properties of the rubber. For example: usually the hardness of vulcanized rubber decreased, elongation increased, and for the strength of rubber, adhesion, cold resistance, aging resistance and other aspects of the impact of the performance also with the use of different types of rubber isolation agent.
According to the role of acylating agent in raw rubber can be divided into two categories: namely, the aw its contribution agent and false isolation agent.
Acylating agent can be dissolved in raw rubber, and can make rubber expansion, so it can be made into large plastic rubber and flexible vulcanized rubber, and false separation agent can not be dissolved in raw rubber, and can not make rubber expansion or only make rubber have a small expansion. This release agent is difficult to mix evenly with the raw rubber, and usually appears on the surface of the product, and the physical and mechanical properties of the vulcanized rubber are often very low. However, due to the effect of the release agent on the raw rubber, the rubber material with greater flexibility is also obtained.
The course of raw rubber softening is theoretically explained as that the molecules of acylating agent seep into the rubber molecules, and the active groups of adjacent molecules are surrounded by the active groups of rubber isolation agent, thus reducing the molecular simple interaction force in raw rubber and increasing the thermal motion of molecular wing nodes and the relative movement between molecules.
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