Coating sol-modified building insulation board and preparation method thereof

Abstract

The invention discloses a coating sol-modified building insulation board. The coating sol-modified building insulation board comprises the following raw materials in parts by weight: 160-200 parts ofstyrene, 15-17 parts of a foaming agent, 2-3 parts of zinc stearate, 14-20 parts of methacryloyl chloride, 10-16 parts of 2, 2, 2-trifluoroethanol, 40-50 parts of ethyl orthosilicate, 4-6 parts of aninitiator, 0.7-1 part of tert-butyl hydroquinone, 20-30 parts of an organic catalytic dispersing solution, 3-4 parts of hollow glass microbeads, 6-9 parts of tributyl citrate and 0.7-1 part of Span 80. Through participation of silicon dioxide sol in an esterification reaction of the methacryloyl chloride and alcohol, the compatibility between the silicon dioxide sol and an esterification product is effectively improved; then, a sol-containing composite esterification material and a monomer styrene are blended so as to jointly participate in a polymerization reaction of the styrene, so that thecompatibility between the silicon dioxide sol and a polymer is further effectively improved and the stability strength of a finished product is improved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a sol-coated modified building insulation board and a preparation method thereof. Background technique [0002] Expanded polystyrene is made of raw materials through pre-hair, curing, molding, drying and cutting. It can not only be made into foam products of different densities and shapes, but also foam boards of various thicknesses. Widely used in construction, heat preservation, packaging, refrigeration, daily necessities, industrial casting and other fields, and can also be used in exhibition venues, commodity cabinets, advertising signs and toy manufacturing. In order to meet the national building energy-saving requirements, it is mainly used for external wall insulation, external wall insulation, and floor heating; its interior is an independent closed air bubble structure, which has low thermal conductivity, high compression resistance, moisture resistance, ai...

AI Technical Summary

Problems solved by technology

[0004] However, since the hollow glass microspheres are like shock absorbers, when the product is impacted, the hollow glass microspheres will be damaged prior to the resin matrix, and when the hollow glass microspheres are blended with other inorganic fillers, the inorganic fillers will It will also cause damage to the surface of hollow glass microspheres, which will easily lead to their rupture, especially under the strong external force and high-speed collision of high-speed mixers and extruders, hollow glass microspheres are more likely to break;