Mixing silicone rubber is a common rubber processing method, but during the mixing process, it is inevitable to encounter the problem of unpleasant powder. Ugly powder refers to the agglomeration phenomenon of rubber during the mixing process, which leads to uneven rubber texture and affects product quality. So, why does the problem of unpleasant powder arise? How should we solve it again?
Firstly, the reasons for the unappetizing powder can be attributed to two aspects. One reason is that the mixing temperature is too high, and rubber is prone to melting at high temperatures, leading to particle adhesion and agglomeration. The second reason is that rubber materials contain a large amount of fillers or additives, which react with rubber during the mixing process and cause agglomeration.
To solve the problem of unappetizing powder, it is necessary to first control the mixing temperature. A reasonable mixing temperature can ensure the fluidity of rubber and prevent melting caused by excessive temperature. In addition, a cooling device can also be used to reduce the mixing temperature, ensuring that the rubber maintains a suitable temperature during the mixing process.
Secondly, for rubber materials containing more fillers or additives, the occurrence of unpleasant powder can be reduced by optimizing the formula. Reasonable selection of fillers and additives can reduce their reactivity with rubber and reduce the occurrence of agglomeration. In addition, the addition of dispersants can enhance the dispersibility of fillers and reduce the occurrence of agglomeration.
In addition to the above methods, mechanical treatment can also be used to solve the problem of unpleasant powder. For example, the mixing time can be increased, and the aggregated rubber can be dispersed through mechanical shearing to redistribute it evenly. In addition, it is possible to increase the mixing frequency and conduct multiple mixing to gradually eliminate agglomeration.
In short, the problem of unpleasant powder during the mixing of silicone rubber is caused by the high mixing temperature and the presence of fillers or additives in the rubber material. By controlling the mixing temperature, optimizing the formula, and mechanical treatment, the problem of unappetizing powder can be effectively solved, ensuring the quality of rubber products. In future production, we need to closely monitor the mixing process and adjust parameters in a timely manner to ensure the uniformity and stability of rubber materials, thereby improving product competitiveness and market share.

High Resilience Fumed Type Silicone Rubber