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What are the effects of low material hardness on silicone products?

Apr 30, 2025

In the silicone products industry, the degree of hardness and softness of products determines their functional function and appearance texture. Silicone materials are also divided into various degrees of hardness and softness, and different degrees of hardness and softness are selected for different product applications. For example, the silicone protective cover uses around 40 to 60 degrees, which belongs to the moderate hardness and softness range and is also a commonly used hardness range. The hardness and softness of silicone determine the appearance quality and processing quality of products. What are the advantages and disadvantages of low hardness silicone materials?

Low hardness silicone materials are commonly used in soft and cushioned products, especially in daily necessities. They can achieve a good texture when in contact with the skin, such as silicone facial cleansers and skincare tools. The advantage of these products is that they can achieve good results and have a longer lifespan, with better texture and better compression and buffering strength. The product is not easily deformed after long-term stress and has fast rebound efficiency after long-term stretching.

In addition to the advantages of consumer use, there are also corresponding drawbacks in the production process of low hardness silicone rubber products. For example, some products are prone to edge damage and cracking during the production of silicone products by silicone manufacturers. The main reason is that the hardness of silicone material is too low, and the fluidity of the product is relatively soft. The speed of placing the rubber material cannot keep up with the temperature of the mold, which leads to the gradual solidification of the material when the mold is closed up and down, making it difficult to bond the edges and causing damage. Secondly, the softening phenomenon of products with too soft silicone material is greater. If the sulfurization time and entry and exit time are not strictly controlled, it is likely to cause the product to soften and deform.

For consumers, the most challenging aspect of low hardness silicone products is that they have not undergone surface treatment, and dust adsorption has become the biggest drawback. Many friends who purchase softer silicone products may experience this phenomenon. After long-term use, there will be a gradual blackening of the surface layer, which is also a drawback of low hardness silicone products. However, after anti-static treatment, this phenomenon will not occur.