关键词: 纤维隔热瓦, 酚醛树脂, 玻璃纤维, 隔热性能, 低成本, 复合材料

Abstract: This paper used chopped glass fibers as the skeleton structure and TEOS-modified phenolic resin as the binder to prepare a low-cost, medium- and low-temperature-resistant insulation glass fiber insulation tiles (GIT) by vacuum filtration method, and the influence laws of the hybrid resin binder on the microscopic morphology, mechanical properties and thermal insulation performance of the insulation tiles were specifically investigated. The results indicate that TEOS has good compatibility with phenolic resin and the rigid and flexible dual network interpenetrating structure can be successfully constructed. The prepared fiber glass tiles all have typical quasi-laminar distribution with densities range from 0.20 to 0.26 g/cm³. Among them, GIT-100 has the best comprehensive performance. The compressive strength in Z direction and X/Y direction shows maximum value of 0.695 MPa and 3.546 MPa at the strain of 5.1% and 4.2%, respectively, the rebound resilience ratio is as high as 90% at the compressive deformation of 15%, the thermal conductivity at room temperature is 0.047 5 W/(m·K), and the compressive strength decreases by 12.5% after heat treatment at 400 ℃.

Key words: fiber insulation tiles, phenolic resin, glass fiber, thermal insulation performance, low cost, composites