Flame-retardant microporous polyurethane foam as well as preparation method and application thereof

• Main Authors: KINSAKU, WEI QIONG
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

The invention relates to the technical field of production of materials for power batteries, in particular to flame-retardant microporous polyurethane foam as well as a preparation method and application thereof. According to the flame-retardant microporous polyurethane foam disclosed by the invention, the thickness of the polyurethane foam forming the flame-retardant microporous polyurethane foam is 2.0-3.5 mm, and the density of the polyurethane foam is 280-360 kg/m < 3 >; the 25% compression strength of the polyurethane foam is 30-80 KPa, the average pore size is 90-180 [mu] m, the TGA test initial decomposition temperature is 180-220 DEG C, and the residual carbon content is 15%-25%. According to the present invention, the UL94 vertical combustion V0 grade can be achieved under the thinner sheet material condition, the compression rebound force under the 25% compression state is maintained to be low, the influence of the high stress on the battery life is avoided, and the excellent aging resistance under