Silicone rubber products are widely used in silicone products such as buttons, sealing rings, extrusion tubes, rubber rollers, gaskets, conductive black particles, anode caps, electrical wires, insulators, self-lubricating oil seals, heat resistance, fire prevention, sports equipment, and healthcare, and are adopted by most internationally renowned enterprises.

Improving the dispersibility of silicone rubber blends is a prerequisite for ensuring product quality. Poor dispersion can lead to problems such as uneven physical properties, rough surface, frost spraying, and short product life. Strictly controlling the dispersion of the adhesive can produce high-quality products.

Mixing is the process of evenly distributing the blending agent in the raw rubber and refining it into blended silicone rubber. After mixing silica gel 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 difficulty in dispersion. What is the reason for this problem? How should we handle it?

Reason Description：
Silicone rubber compound is a complex system, and poor dispersion is caused by various reasons. It is necessary to analyze the specific situation in detail. Here are a few main reasons for your reference.

Low dosage of mixed silicone rubber structure
The hydroxyl content in the structural agent is too low
Raw rubber has a high molecular weight and a narrow molecular weight distribution
Micro crosslinked silicone rubber raw rubber in mixed silicone rubber raw rubber
White carbon black is not proportional to the amount of additives added
Low opening or kneading temperature

handle：
1. Add structural agents;
2. Select blended silicone rubber raw rubber with uniform molecular weight distribution;
3. When adding materials, add them in proportion to the structural agent;
4. Increase the opening or kneading temperature appropriately;