SiO2 aerogel aqueous heat insulation coating and preparation method thereof

• Main Authors: LIU HUBING, WEI ZHILONG, LIU GAILI
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2023
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to the technical field of coatings, in particular to a SiO2 aerogel water-based heat insulation coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 7 to 15 parts of water, 10 to 15 parts of hollow glass beads, 40 to 50 parts of SiO2 aerogel slurry, 0.1 to 0.3 part of a first neutralizing agent, 3 to 5 parts of a coalescing agent, 20 to 30 parts of styrene-acrylic emulsion and 0.1 to 0.5 part of a thickening agent, wherein the SiO2 aerogel slurry is prepared by uniformly dispersing a silane coupling agent and SiO2 aerogel in a polyvinyl alcohol aqueous solution. The coating has good adhesive force and corrosion resistance, and has excellent heat insulation performance and cracking resistance. 本发明涉及涂料技术领域，特别涉及一种SiO2气凝胶水性隔热保温涂料及其制备方法。按重量份计，该涂料的组分包括：水7～15份，空心玻璃微珠10～15份，SiO2气凝胶浆液40～50份，第一中和剂0.1～0.3份，成膜助剂3～5份，苯丙乳液20～30份，增稠剂0.1～0.5份；其中，所述SiO2气凝胶浆液由硅烷偶联剂、SiO2气凝胶均匀分散于聚乙烯醇水溶液中制得。该涂料具有良好的附着力和耐腐蚀性能，且具有优异的隔热保温性能和抗开裂性能。