A flame-retarded thermosetting resin composition is provided by blending about 5 to 45 mole % of a phenylcyanate having at least one halogen substituent at the ortho or para position relative to the cyanato group, and about 55 to 95 mole % of a halogen-free bis-4-phenylcyanate. A flame retardancy of V-O grade of UL94 is achieved in the thermoset resin of the composition without compromising dielectric, heat resistance, moisture absorption and other properties.
一种阻燃性热固性
树脂组合物是通过混合约 5 至 45 摩尔%的苯基
氰酸酯(其至少一个卤素取代基位于
氰基的正位或对位)和约 55 至 95 摩尔%的无卤双-4-苯基
氰酸酯而制成的。该组合物的热固性
树脂的阻燃性能达到了 UL94 的 V-O 级,同时不影响介电性、耐热性、吸湿性和其他性能。