(1) hot vulcanized silicone rubber. The output and consumption of silicone rubber in the developed countries in the world have reached a very high level, and the development is very rapid. Although our country in recent years in the production of HTV technology and production capacity has been greatly improved, and some of the production of silicone rubber technology and products into the international market. But in a comprehensive way, the silicon rubber industry in our country still has no small gap compared with the international advanced level. Therefore, development and the establishment of the larger with economies of scale heat curing silicone rubber and rubber mixing device, the development of hybrid rubber series varieties, especially high quality varieties, to change China's mixed compound in the output and varieties are to rely on foreign countries, promote our silicone and its related industries technical progress has a very important significance.
(2) at room temperature vulcanized silicone rubber, with one component sealant for example, because of the disorderly competition in the market, most manufacturers in order to reduce the cost by low price recovery material as the main raw material, the crosslinking agent are mostly some small factory products, the quality of instability, resulting in decline in the overall quality of the final product, the performance is affected. The high performance of the sealant or the use of imports and imports of packaging products, such as curtain wall with structural adhesive and sealant. These are the problems that should be paid attention to in the future. High performance building sealant and silicone rubber is a hot research and development. Building sealing stalemate is improving the surface dry time and curing time, and with the substrate adhesion, especially with the adhesive property of the concrete pouring. At the same time, we should realize the continuous production and overcome the stability of the batch process, which has the disadvantage of high loss and low efficiency. Addition of silicone rubber is mainly to improve the flexibility and transparency, and there is the development of a single component of silicone rubber.
For other special uses of silicone rubber products, such as flame retardant silicone potting material, high damping silicone rubber, high corrosion resistance high resistance to tear silicone rubber, anti electromagnetic interference of silicone rubber, high temperature (above 350 DEG C) silicone rubber, although the total demand is not great, but for our country's national defense and cutting-edge technology and national economy development have an irreplaceable role, these also need to we make great efforts to research and development.
