| abstract |
The invention discloses flame-retarded heat-conducting compound polyurethane material and preparation method thereof.By mass percentage, its composition of raw materials is made up of following component: hexamethylene diisocyanate trimer 19.3%～23.8%, polyether Glycols 3.9%～4.9%, Sucrose polyethers polyhydric alcohol 3.9%～4.9%, chain extender 2.6%～3.2%, catalyst 0.1%～0.2%, modified heat filling 41.0%～52.5% and modified flame-retardant filler 17.7%～22.0%；The vertical combustion of the flame-retarded heat-conducting compound polyurethane material of the present invention is tested by UL94V 0 grade, limited oxygen index more than 50%, excellent fireproof performance；When thermal conductivity reaches 1.3W/m K, hot strength can reach 20.3MPa, and bending strength can reach 60.8MPa, good mechanical properties. |