Reasons and treatment methods for unpleasant powder during mixing of silicone rubber

Mixing is the process of evenly distributing the blending agent in the raw rubber and refining it into blended silicone rubber. After mixing silicone rubber and the compounding agent, both physical and chemical effects were achieved, resulting in the formation of a new structure. When mixing silicone rubber, there is a problem of unpleasant powder. What is the reason for this problem? How should we handle it? Below is an introduction for everyone:

reason:

1. Low dosage of mixed silicone rubber structure

2. The hydroxyl content in the structural agent is too low

3. Raw rubber has a high molecular weight and a narrow molecular weight distribution

4. Micro crosslinked silicone rubber raw rubber in mixed silicone rubber raw rubber

5. White carbon black is not proportional to the amount of additives added. 6. The opening or kneading temperature is too low

handle:

1. Adding structural agents

2. Selecting blended silicone rubber raw rubber with uniform molecular weight distribution

3. When adding materials, add 4 in proportion to the structural agent and increase the opening or kneading temperature appropriately.