Organosilicon ether oligomers, with their unique molecular structure, demonstrate multi-functional optimization value in the modification of silicone rubber and have become a core additive for enhancing the comprehensive performance of materials. Their excellent compatibility with the silicone rubber matrix can simultaneously improve processing performance and usage performance, and are suitable for high-end applications such as high-temperature and sealing scenarios.
In terms of processing performance optimization, adding 5% to 8% of the ether oligomers can reduce the viscosity of silicone rubber by 30% to 40%, significantly improving fluidity and solving the problem of deep, long, and narrow cavity encapsulation. At the same time, it does not affect the curing rate. In terms of mechanical performance improvement, the ether groups in the oligomers crosslink with the hydroxyl groups of silicone rubber to form a dense network, increasing the tensile strength by more than 25% and the compressive permanent deformation rate to below 8%, which is particularly suitable for precision sealing requirements.
The optimization of environmental stability is more prominent. This oligomer can enhance the high-temperature resistance of silicone rubber (-70℃ to 250℃), with a performance attenuation of less than 10% after 1000 hours of QUV aging. It also improves radiation stability and enables the material to maintain excellent dielectric properties even under 50kGy irradiation. It has been widely applied in medical devices, automotive sealing components, and electronic encapsulation adhesives, among others. In scenarios such as nuclear medicine connection tubes and guidance radar magnetic core encapsulation, it has successfully addressed the shortcomings of traditional silicone rubber in aging resistance.