Silicone products how to improve the hardness, silicone products because of its excellent elasticity, water resistance and aging resistance, has been widely used in many fields. However, with the continuous expansion of the use of scenarios, the hardness requirements of silicone products are becoming higher and higher. Silicone products manufacturers have a process to improve the hardness of silicone products, so how to improve the hardness of silicone products?
First, the influencing factors of the hardness of silicone products
The hardness of silica gel products is affected by many factors, including the choice of silica gel raw materials, the type and amount of vulcanization agent, and the control of vulcanization process. Therefore, to improve the hardness of silicone products, we first need to start with these factors and conduct in-depth research and analysis.
Second, the method of improving the hardness of silicone products
1. Choose the right silicone raw materials
The properties of silica gel raw materials have a direct impact on the hardness of products. In general, the hardness of products made of silica gel raw materials with higher hardness will also increase accordingly. Therefore, when purchasing silica gel raw materials, the varieties with higher hardness should be selected according to actual needs.
2. Adjust the type and dosage of vulcanizing agent
Vulcanizing agent is one of the important factors affecting the hardness of silica gel products. Different types of vulcanizing agents have different effects on the vulcanization rate and hardness development of silica gel. By adjusting the type and dosage of vulcanizing agent, the hardness of silicone products can be effectively improved. It should be noted that the amount of curing agent is not the more the better, excessive use may cause the product hardness is too high and lose elasticity.
3. Optimize the vulcanization process
Vulcanization process is the key link in the production of silica gel products. Reasonable vulcanization temperature, time and pressure and other parameters are helpful to achieve the uniformity and stability of the hardness of silicone products. Therefore, in the production process, the vulcanization process should be continuously optimized to improve the hardness of the product.
4. Add hardness enhancer
Adding hardness enhancers, such as calcium carbonate, silica black and other inorganic fillers, can effectively improve the hardness of silica gel products. These fillers play a skeleton role in the silicone matrix and increase the rigidity of the product. However, it should be noted that the amount of filler added should be moderate, too much may lead to a decline in product performance.
5. Improve product structure design
The structural design of the product also affects its hardness. By optimizing the structure of the product, such as increasing the wall thickness, changing the cross-section shape, etc., the hardness of the silicone product can be improved to a certain extent. In addition, reinforcing bars or other reinforcing structures can be added to the key parts of the product to improve the overall hardness of the product.
