1. When the rubber product is molded, it is not able to […]
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 Change 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. , 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.
The rubber products are 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 The product is molded and molded by a rubber flat vulcanizing machine. After the product is formed, it is arises to the same as the product without burrs.
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 then the use Value is lost. It is characterized by cracks, stickiness, hardening, softening, chalking, discoloration, and mildew.