The feature of the rubber products

1. During the molding of rubber products, after high pressure pressing, it cannot be eliminated due to the cohesion of elastomer. During the molding and parting, it often produces extremely unstable shrinkage (the shrinkage rate of rubber varies due to different rubber types). It can be gentle and stable only after a period of time. Therefore, at the beginning of the design of a rubber product, no matter the formula or mold, it is necessary to calculate the coordination carefully. If not, it is easy to cause the instability of product size and low product quality.

2. Rubber is a thermosetting elastomer, while plastic is a thermosetting elastomer. Due to different types and main bodies of sulfides, there is a considerable gap in the temperature range of forming and curing of rubber, and it can even be affected by climate change and indoor temperature and humidity. Therefore, the production conditions of rubber products need to be adjusted appropriately at any time. If not, there may be differences in product quality.

3. Rubber products are made from rubber raw materials after internal mixer mixing. When mixing, the formula is designed according to the characteristics of the required rubber products, and the required product hardness is determined. The product is molded by a rubber flat vulcanizer. After the product is formed, the flash treatment shall be carried out at last, and the product surface shall be smooth without burr.

4. The aging test of rubber products belongs to the category of aging test. Rubber aging refers to the phenomenon that the performance structure of rubber and products changes due to the comprehensive action of internal and external factors during processing, storage and use, and then loses the use value. It is characterized by cracking, sticking, hardening, softening, pulverization, discoloration, mildew, etc.