What causes silica gel products to be stained with ash?

As the saying goes, there can be no shortcomings, any product it can not be foolproof, basically will be pure in the shortcomings, in daily necessities silicone material occupies a part of our lives, dust is one of the more common defects of silicone products, even if the silicone products manufacturers just produced products will basically exist the phenomenon of ash absorption, So this is a common problem in the entire industry, but also one of the drawbacks of many products, and the main reason is because of the unique nature of the material, and what are the main reasons for affecting its adsorption of dust?

Adsorption force is the inherent characteristics of organic silicone material, it can be used in the organic silicone industry to prevent, desiccant and absorb moisture, the characteristics of highly active adsorption material is the essence of silica, it will automatically adsorb fine dust in the surrounding environment, the main reason is that the physical material in silica belongs to the anodic, In addition to silica gel daily necessities as a lot of auxiliary materials and combining materials in inorganic silicon, but unlike its crosslinking agent has a great reaction function on the adsorption force, if the silicon hydroxyl group is completely destroyed and reduced or even no adsorption capacity, but different silica gel products are also related to other external factors, such as the following!

The main reason why the material hardness affects the dust adsorption is that the crosslinking agent added in the material is different, resulting in the different adsorption force effect. The silica gel product with low hardness is more likely to be contaminated with ash. Due to the low hardness of the product, the more the cost of the major component in the material, the bigger the adsorption force will be caused. And high hardness products usually have the same problem, but the adsorption strength is not as large as low hardness silicone products!Among the materials, silicone oil also affects the adsorption strength, the more the composition of silicone oil in the refining process of the material leads to the greater the surface viscosity, which will lead to the greater degree of ash of the product, this phenomenon is mainly not a problem of adsorption force, but the surface silicone oil leads to the stickiness of the product, so naturally cause dust adsorption.

The second is the mold problem, in the silicone rubber products manufacturers mold die surface affect the effect of dust adsorption products is different, because the mold surface is divided into fog surface and polished mirror, fog mold is usually divided into thick fog surface and fine fog surface, different fog face the product surface ash effect is different, and the largest viscosity or polishing surface, there is no gap and sand holes on the surface. In addition, the unique adsorption force of silica gel naturally causes the problem of ash contamination.

The main reason for the ash problem is the nature of the material and the control of the silicone processing manufacturers, but after the process of grinding and technological progress, the dust of silicone products has long been eliminated by a variety of process methods, and the current silicone products will basically be surface treatment of adsorbed dust, such as oil spraying, electrostatic glue and surface coating and so on!