The invention discloses a high-performance
silicone rubber microporous foam material, a preparation method thereof and application of the high-performance
silicone rubber microporous foam material in manufacturing of a warm-edge super spacing bar. According to the invention, a process of low-temperature preheating and high-temperature rapid foaming-curing of feed during
extrusion molding is adopted, pre-curing is carried out at low temperature in advance, vinyl
silicone resin enhances matrix modulus, homogeneous-phase gas nuclei and heterogeneous-phase gas nuclei generated by the nano nucleating agent, the foaming
promoter and the
foaming agent are rapidly foamed and cured at high temperature, so that the foaming performance is improved; and the vinyl
silicone resin optimizes a foam structure and strengthens a
molecular network, so that the
mechanical property and the elastic
recovery capability of foam are comprehensively improved, and the microporous, light and high-strength high-performance
silicone rubber-based warm-edge super spacing bar is obtained. The 3A
molecular sieve nanopores and closed micropores endow the foam with good
moisture absorption and waterproof performance and sound insulation and heat insulation performance. The super spacing bar can perform elastic deformation compensation under stress, adapts to complex shapes of special-shaped glass (such as a curved
curtain wall), and is simple in process and low in maintenance cost.