Resin composition for low-density high-flame-retardant polyurethane material and application thereof

• Main Authors: DU JUNCHAO, SUN HAI'OU, WEN RONGZHENG, ZHAO XIUWEN
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a resin composition for a low-density high-flame-retardant polyurethane material and application of the resin composition, and the resin composition is composed of a componentA and a component B, wherein the component A includes: 40-60 parts of polyether polyol I, 10-20 parts of polyether polyol II, 10-30 parts of flame retardant polyether ester polyol, 0.5-2 parts of a foam stabilizer, 0.5-1.5 parts of a composite catalyst, 5-10 parts of a chain extender, 1-5 parts of a cross-linking agent, 1-5 parts of water, 1-5 parts of a flame retardant and 0.2-1 part of carbon black; wherein the polyether polyol 1 adopts glycerol as an initiator, a polymerization unit is propylene oxide, and the functionality is 3, pentaerythritol is adopted as an initiator of the polyether polyol 2, epoxypropane is used for chain extension, ethylene oxide is used for terminating the polyether polyol, and the functionality is 4; and the component B is polymethylene polyphenyl polyisocyanate. The polyurethane hard