Sinoray(China) Rubber & Plastic Technology Co.,Ltd
NEWS
Rubber material rubber products
Release time:
2023-08-14
Rubber products refer to the activities of producing various rubber products using natural and synthetic rubber as raw materials, and also include the use of waste rubber to reproduce rubber products.
Rubber products refer to the activities of producing various rubber products using natural and synthetic rubber as raw materials, and also include the use of waste rubber to reproduce rubber products.
When rubber products are formed, they are subjected to high pressure compression, and due to the inherent cohesion of the body, unstable shrinkage (the shrinkage rate of rubber varies depending on the type of rubber) often occurs during molding and demolding. It must take a period of time before it can be gentle and stable. So, at the beginning of a rubber product design, regardless of the formula or mold, it is necessary to carefully calculate the fit. If not, it is easy to cause unstable product size and low product quality.
Rubber belongs to the category of hot melt solid, while plastic belongs to the category of hot melt cold set. Due to the different types of sulfides in rubber, there is also a considerable difference in the temperature range of its molding and curing, 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.
Rubber products are made by mixing rubber raw materials in an internal mixer as raw materials. During the mixing process, formulas are designed based on the characteristics of the required rubber products and the required product hardness is determined. The product is produced and molded using a rubber flat vulcanization machine. After the product is formed, perform flash treatment to ensure that the surface of the product is smooth and free of burrs.
Rubber product aging testing belongs to the category of aging testing. Rubber aging refers to the phenomenon that rubber and its products undergo changes in performance and structure due to the combined effects of internal and external factors during processing, storage, and use, resulting in the loss of useful value. Manifestations include cracking, sticking, softening, powdering, discoloration, and mold growth.
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