Different hardnesses of silicone products introduction
Some silicone products on the market feel soft to the touch and some are slightly hard, which is caused by the hardness of the silicone. Different silicone products have different requirements for softness and hardness, which are related to the formulation of the original product and the raw materials. Generally speaking, the soft hardness of silicone rubber products is around 20 to 80, low hardness is better tensile strength, normal up to 300%, and the lowest to 20% so. What are the effects of different hardnesses of silicone rubber products?
1, the change in extrusion strength, low hardness products in the strength will gradually reduce, high hardness will increase, 5-10 degrees of difference will have a different extrusion change.
2, the change in tear resistance, the higher the hardness of the product the weaker the tear resistance will be, especially with right-angle products that are easy to tear, the lower the hardness the better the tear degree, different hardness different tear degrees.
3, fixed stretch stress leads to deformation, fixed stretch stress is an important control index of silicone material, precisely with the hardness has a certain correlation, different hardness and vulcanization process of the control of the temperature and pressure for the product pull-up deformation has an important relationship.
4, wear and fatigue changes, different hardness of the product in the wear and fatigue of the different impact, general silicone material with the crystallinity of the increase in hardness, long-term wear will affect the fatigue of the decline in wear is not enough phenomenon.
5, different elasticity, elasticity is one of the important elements of silicone material, so different hardness of the material has an impact on each of the different applications of the product, and the hardness of ± too big a difference may lead to the use of the entire product effect, and even affect a whole of each link!
From the impact of different hardnesses of silicone products, we can see how much softness affects the product. The tensile force and hardness of silicone products are important indicators of the material, to get the desired tensile stress, you need to choose the targeted material. OYIGIFTS has focused on the production of silicone products for more than ten years, we suggest that when you customize silicone products, you should clearly explain the hardness requirements to the manufacturer, otherwise the products produced may affect the use of the effect.
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