Styrofoam, also known as polyurethane foam (OCF), is a cross-combination product of aerosol technology and polyurethane foam technology. It is a special polyurethane product filled with polyurethane prepolymer, foaming agent, catalyst and other fillers in a pressure-resistant aerosol can. Since it is a polyurethane product, styrofoam has some common problems with polyurethane products, such as flammability, black smoke and heavy odor when burning, and it needs to be away from fire and heat sources. Must be stored in a dry, cool and ventilated warehouse. The storage temperature should not exceed 30 ℃. There are many restrictions in use and storage.
With the improvement of technology, the replacement of products, the emergence of foamed silicone, it has set off a boom in the industry. Foamed silicone is also called additive silicone. It is a two-component heating vulcanized silicone rubber. It is composed of silica gel and curing agent at 1: 1. It is a white or skin-colored oily liquid. It becomes a soft elastic material after vulcanization. The volume is 3-4 to accompany the original. Liquid foamed silicone is an environmentally friendly material that has passed SGS environmental protection and non-toxic certification. It has excellent electrical properties and chemical stability, water resistance, weather resistance, non-toxic and odorless, low linear shrinkage, easy operation and so on. In use, the foamed silica gel has small and uniform pore diameter; light weight, elasticity and good hand feel; no migration phenomenon.
In application, foamed silicone can be used to make flexible silicone rubber products such as human body, insole, shoulder pad, patch, anti-skid pad and so on. It can also be used to make silicone foam sealing strips, silicone foam sheets, anti-vibration silicone foam plates, silicone foam coils, etc., which play the role of shock-absorbing cushioning accessories. It should be noted that the foamed silicone should not be in contact with any other condensed silicone, otherwise it will cause the curing agent to be poisoned and cause the silicone to not cure. Water, impurities, organic tin catalysts, acids, alkalis, and other organic materials containing sulfur, phosphorus, and nitrogen can affect the curing of the glue. Do not mix or contact these substances during use.