Method for preparing warm-keeping leather based on SiO2 aerogel microspheres

• Main Authors: JIA ZHANGTING, GAO DANGGE, FU YATONG, LYU BIN, TANG LITAO
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: ADHESIVES; APPARATUS THEREFOR; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS FOR TANNING; CORRECTING FLUIDS; DYES; FILLING PASTES; HIDES; INKS; LEATHER; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PELTS; POLISHES; SKINS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a method for preparing warm-keeping leather based on SiO2 aerogel microspheres, which comprises the following steps: preparing the SiO2 aerogel microspheres, mixing the SiO2 aerogel microspheres with a dispersing agent and an adhesive polyurethane to prepare a dispersion liquid, directly brushing the dispersion liquid on the meat surface of the leather, and drying after brushing to obtain the warm-keeping leather. The SiO2 aerogel microspheres have porosity and low thermal conductivity, so that after the SiO2 aerogel microspheres are combined with polyurethane, air convection can be effectively prevented, heat conduction can be inhibited, the heat conductivity coefficient of the leather can be reduced, and the thermal insulation performance of the leather can be improved. The heat conductivity coefficient of the SiO2 aerogel microsphere coated leather is 0.082 W.m <-1 >. K <-1 >, and is reduced by about 30% compared with that of untreated leather (0.111 W.m <-1 >. K <-1 >). 本发明公开了基于SiO