The difference between foamed silicone and styrofoam
Styrofoam, also known as polyurethane foam (OCF), is the product of the cross combination of aerosol technology and polyurethane foam technology. It is a special polyurethane product in which polyurethane prepolymer, foaming agent, catalyst and other components are filled in a dry pressure-resistant gas seal. Since it is a polyurethane product, the foam also has some common problems of polyurethane products. , If it is flammable, it will produce black smoke and smell heavy when burning, keep away from fire, hold the source, and must be stored in a dry, cool, and ventilated warehouse.
With the improvement of technology, the upgrading of products, and the appearance of foamed silica gel, it has set off a boom in the industry. Foamed silica gel, also known as addition-type silica gel, is a two-component heating vulcanized silicone rubber. It is composed of silica gel and curing agent at a ratio of 1:1. It is a white or skin-colored oily liquid. After vulcanization, it becomes a soft elastic material, foaming The volume is the original 3-4 to accompany. Liquid foamed silica gel is an environmentally friendly material, which has passed the SGS environmental protection and weightless certification. It has excellent electrical properties and chemical stability, water resistance, weather aging resistance, non-toxic and tasteless, low linear shrinkage, and easy operation. When the foamed silica gel is in use, the foam pore size is small, uniform and delicate; it is light in weight, elastic, and feels good; it does not migrate.
In terms of application, foamed silica gel can be used to make flexible silicone rubber products such as human body, insoles, shoulder pads, patches, anti-skid pads, etc. It can also be used to make silicone foam sealing strips, silicone foam sheets, shock-resistant silicone foam panels, silicone foam coils, etc., and play the role of shock-absorbing and buffering accessories. It should be noted that the foamed silica gel should not be in contact with any other condensation type silica gel, otherwise it will cause poisoning of the curing agent, resulting in the phenomenon that the silica gel will not cure. Water, impurities, organotin catalysts. Acids, alkalis and other organic substances containing sulfur, phosphorus and ammonia can affect the curing of the glue, and these substances should not be mixed or contacted during use.

About foamed silicone, please check the details:
https://www.siliconefoam.net/product-iota-f663a,b-liquid-silicone-rubber-foam-.html