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The manufacturing method of low cis rubber 

1. Introduction 

Low cis rubber is an important raw material for chemical production, widely used in rubber products such as tires, hoses, and tapes. Due to its excellent wear resistance, crack resistance, and oil resistance, it has attracted much attention. This article will introduce the manufacturing method of low cis rubber, including the process steps of raw material selection, mixing, vulcanization, etc., in order to provide reference for the field of chemical production

2、 Raw material selection 

1 Natural rubber: Choose high-quality natural rubber as the main material, which has good elasticity, strength, and wear resistance

2. Polybutadiene rubber: Add an appropriate amount of polybutadiene rubber to improve the low-temperature performance and flexural flexibility of low polybutadiene rubber

3. Carbon black: As a reinforcing agent, it improves the strength and hardness of rubber

4. Petroleum resin: increases the viscosity and oil resistance of rubber

5. Promoters, anti-aging agents, etc.: Improve the processing performance and aging resistance of rubber

3、 Mixing process 

1 Internal mixer mixing: natural rubber, butadiene rubber, carbon black, petroleum resin and other raw materials are added to the internal mixer for high-temperature and high-pressure mixing, so that the raw materials are fully and uniformly mixed

2. Open mixer mixing: Put the mixed rubber material from the internal mixer onto the open mixer, add additives such as accelerators and anti-aging agents, and continue mixing until uniform

4、 Sulfurization process 

1 Mold preparation: Prepare corresponding vulcanization molds according to product requirements

2. Rubber cutting: Cut the mixed rubber into shapes and sizes suitable for the mold

3. Vulcanization: Put the cut rubber material into the mold and perform high-temperature and high-pressure vulcanization in the vulcanization machine to cause cross-linking reaction of the rubber material, forming a rubber product with a three-dimensional network structure

5、 Notes 

1 During the mixing process, attention should be paid to controlling temperature and time to avoid performance degradation caused by overheating or prolonged use of the rubber material

During the vulcanization process, it is necessary to ensure the cleanliness of the mold to avoid impurities affecting product quality. At the same time, it is necessary to control the vulcanization temperature and time to ensure the performance and service life of the product

During the production process, it is also necessary to pay attention to safety and avoid accidental injuries caused by improper operation

6、 Conclusion: The manufacturing method of low cis rubber involves multiple links such as raw material selection, mixing process, and vulcanization process, each of which has a significant impact on the performance and service life of the final product. Therefore, strict control of various process parameters is necessary in the production process to ensure product quality. At the same time, continuously optimizing production processes, improving production efficiency, and reducing costs are also important development directions in the field of low cis rubber manufacturing in the future. I hope that the introduction in this article can provide useful reference and inspiration for the field of chemical production.