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The manufacturing method of silicone rubber blend is an important raw material widely used in the field of chemical production, with excellent properties such as high temperature resistance, oxidation resistance, corrosion resistance, and electrical insulation. It is crucial to improve the performance and quality stability of silicone rubber blends in order to meet the needs of different application scenarios. This article aims to explore the manufacturing methods of silicone rubber blends, providing reference for improving product quality and production efficiency

2、 Materials and Equipment 

1 Materials: silicone rubber raw rubber, fillers, vulcanizing agents, catalysts, etc

2. Equipment: Internal mixer, open mixer, mixer, extruder, etc

3、 Manufacturing method 

1 Ingredients: Mix raw rubber, fillers, vulcanizing agents, catalysts, etc. in a certain proportion according to product requirements

2. Internal mixing: Put the ingredients into the mixer for high-temperature, high-pressure, and high shear mixing operations, so that each component is fully mixed and uniform, while improving the plasticity of the rubber material

3. Opening: Put the mixed rubber material into the opening mixer for low-temperature and low-pressure opening operation, further adjust the plasticity and uniformity of the rubber material, and add necessary additives such as anti-aging agents and flame retardants

4. Parking: Park the opened rubber material for a certain period of time to allow various additives to fully diffuse and improve the stability of the rubber material

5. Refining: Refining the parked rubber material to improve its uniformity and consistency, preparing for subsequent molding and processing

4、 Notes 

1 Strictly control the proportion and addition order of each component to ensure the stability of the rubber performance

During the mixing and opening process, the process parameters should be adjusted according to the equipment performance and rubber material characteristics to avoid phenomena such as over mixing and under mixing

During the parking and refining process, it is necessary to ensure that the environmental temperature, humidity, and other conditions are suitable to prevent early vulcanization or aging of the rubber material

5、 Quality Inspection and Control 

1 Real time monitoring and recording of key parameters during the manufacturing process, such as temperature, pressure, shear force, etc

2. Conduct quality inspection on the produced silicone rubber blend, including testing of physical, chemical, and electrical properties, to ensure that the product meets relevant standards and customer requirements

3. Trace and analyze non-conforming products, identify the causes of problems, and take corresponding measures to improve product quality and production efficiency

6、 Environmental and safety requirements 

1 In the manufacturing process, environmental regulations should be followed to reduce the emissions of pollutants such as exhaust gas, wastewater, and waste residue

2. Regular maintenance and upkeep of production equipment to ensure normal operation, reduce failure rates and repair costs

3. Strengthen employee safety awareness and operational skills training, improve employee safety awareness and ability to respond to emergencies

7、 Conclusion: The manufacturing method of silicone rubber blend involves multiple stages and process parameters, and strict control of operation and quality testing in each stage is required to ensure the stability of product performance and quality. At the same time, strengthening environmental protection and safety management, reducing production costs, and improving the competitiveness and sustainable development ability of enterprises.