A fire retardant VC-based resin composition with excellent fire retardant properties, heat stability, and high softening temperature is provided. The fire retardant VC-resin composition comprises 100 parts by weight of a VC-based resin, 0.05 to 10 parts by weight of at least one anti-smoke agent selected from zinc-, molybdenum- or tin compounds, and 0.01 to 10 parts by weight of at least aluminum- and magnesium-metal hydroxide or zeolite. The anti-flame agent is a molybdenum compound or may be used together with a basic compound, or a surface-coated agent containing a basic compound or titanium oxide as a nucleating agent coated with the molybdenum compound. A molded article is prepared by extrusion molding, calender-press molding, or extrusion-followed by press molding, and the color difference Δa determined by a warm-water color change test at 60° C. for 48 hours is −0.5 to +0,5 before and after warm-water soaking.
本发明提供了一种具有优异阻燃性能、热稳定性和高软化温度的阻燃
VC 基
树脂组合物。该阻燃
VC 树脂组合物包括 100 重量份的
VC 基
树脂、0.05 至 10 重量份的至少一种抗烟剂(选自
锌、
钼或
锡化合物),以及 0.01 至 10 重量份的至少铝和
镁金属氢氧化物或
沸石。阻燃剂是一种
钼化合物,也可以与一种碱性化合物一起使用,或者是一种表面涂层剂,其中含有一种碱性化合物或
氧化钛作为成核剂与
钼化合物一起涂层。通过挤压成型、压延-压制成型或挤压-压制成型制备模塑制品,在 60 摄氏度温
水变色试验中测定 48 小时的色差 Δa 在温
水浸泡前后为-0.5 至 +0.5。