Condensed liquid silicone and additive liquid silicone are two common silicone materials, which have significant differences in preparation process and performance characteristics.
Firstly, condensed liquid silica gel is prepared through hydrolysis condensation reaction, and its molecular structure contains Si-O-Si bonds. During the preparation process, silane monomers first form silanols through hydrolysis reactions, and then form siloxane polymers through condensation reactions. The addition of liquid silicone is prepared by the addition reaction of monomers such as hydrogen silane and vinyl silane, and its molecular structure contains Si-C bonds. Due to different preparation processes, the molecular structure and properties of the two types of silica gels also differ.
Secondly, condensed liquid silicone will release moisture during the curing process and needs to be cured under certain temperature and humidity conditions. The addition of liquid silicone does not require the release of water during the curing process and can be cured at room temperature. This also makes the addition of liquid silicone more convenient in some special applications.
In addition, condensed liquid silicone typically has good high-temperature resistance and electrical insulation performance, making it suitable for sealing and insulation in high-temperature environments. The addition of liquid silicone has good flexibility and weather resistance, making it suitable for sealing and bonding in outdoor environments.
In general, condensed liquid silicone and additive liquid silicone have their own advantages and suitable applications. The selection of suitable silicone materials needs to be comprehensively considered based on specific usage requirements and environmental conditions. In future scientific research and engineering practice, the research and application of silicone materials will have broad development prospects.
