Rubber product refers to the activity of producing various rubber products from natural and synthetic rubber, and also includes rubber products re-produced from waste rubber. The output of synthetic rubber has greatly exceeded that of natural rubber, and the largest output is styrene-butadiene rubber.
1. When the rubber product is molded, it is not able to eliminate the cohesive force prepared by the elastic body after being pressed by a large pressure. When forming the mold, it tends to produce extremely unstable shrinkage (the shrinkage rate of the rubber varies depending on the rubber type). ), it takes a while to be gentle and stable. Therefore, when a rubber product is designed at the beginning, regardless of the formula or mold, it is necessary to carefully calculate the fit. If not, it is easy to cause the product size to be unstable, resulting in low product quality.
2. Rubber is a hot-melt thermosetting elastomer, and plastic is hot-melt and cold-set. Because of the different types of sulfides, the temperature range of the curing of rubber is also quite different, even due to climate change, indoor temperature and humidity. Therefore, the production conditions of rubber products must be adjusted at any time. If not, the quality of the products may be different.
3. The rubber product is a raw material made from rubber raw materials and mixed with rubber. The rubber compound is used as a raw material in the rubber mixing process according to the characteristics of the rubber product required, and the required hardness of the product is determined. The product is molded and molded by a rubber flat vulcanizing machine. After the product is formed, it is finally subjected to flash processing to smooth the surface of the product without burrs.
4. Rubber product aging test belongs to the category of aging test. Rubber aging refers to the phenomenon that the performance structure changes due to the combination of internal and external factors during the processing, storage and use of rubber and products, and thus the use value is lost. It is characterized by cracks, stickiness, hardening, softening, chalking, discoloration, and mildew.