| abstract |
The invention discloses a flame-retardant rigid polyurethane foam material and a preparation method thereof, belonging to the technical field of polyurethane materials and comprising a component A and a component B; the component A comprises the following components in parts by mass: 100 parts of polymethylene polyphenyl polyisocyanate; the component B comprises the following components in parts by mass: 90-100 parts of sucrose polyether polyol, 10-25 parts of a foaming agent, 1-10 parts of a chain extender, 2-6 parts of a foam stabilizer, 2-10 parts of a cross-linking agent, 0.5-8 parts of a catalyst, 8-15 parts of a flame retardant and 8-30 parts of glass fibers, wherein the diameter of the glass fibers is 0.2-0.4 mm. |