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发明公开
CN107151395A 一种高GWIT耐候阻燃PVC/SAN合金材料及其制备方法 无效 - 撤回

一种高GWIT耐候阻燃PVC/SAN合金材料及其制备方法
摘要：
本发明公开了一种高GWIT耐候阻燃PVC/SAN合金材料，其按质量百分比计由如下原料组分组成：PVC树脂60~70%、SAN树脂15~30%、MBS抗冲改性剂3~10%、热稳定剂1.5~3%、增塑剂1~2.5%、润滑剂0.8~2%、抗氧剂0.2~0.6%、紫外线吸收剂0.5~1.5%和阻燃协效母粒3~10%。本发明采用PVC/SAN树脂体系，其材料中无容易发生光老化降解的双键，且进一步添加了特殊的阻燃协效母粒和紫外线吸收剂，在保证该合金材料具有良好的力学性能及后加工性能的基础上，大大提高了其耐候性和耐灼热丝性能，使得该合金材料的GWIT温度可提高到850度，合金材料经过荧光紫外灯或冷凝800h光老化试验后表面无气泡、龟裂、粉化现象，力学性能保持率在80%以上。
摘要（英）：

The invention discloses a high-GWIT (glow wire ignition temperature) weather-resistant flame-retardant PVC/SAN (polyvinyl chloride/styrene acrylonitrile) alloy material. The high-GWIT weather-resistant flame-retardant PVC/SAN alloy material comprises, by weight, 60-70% of PVC resin, 15-30% of SAN resin, 3-10% of MBS (methyl methacrylate) impact-resistant modifiers, 1.5-3% of heat stabilizers, 1-2.5% of plasticizers, 0.8-2% of lubricants, 0.2-0.6% of antioxidants, 0.5-1.5% of ultraviolet absorbents and 3-10% of flame-retardant synergistic master batch. The high-GWIT weather-resistant flame-retardant PVC/SAN alloy material has the advantages that the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material comprises PVC/SAN resin systems, materials for the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material are free of double bonds vulnerable to photo-ageing degradation, the special flame-retardant synergistic master batch and the ultraviolet absorbents are further added into the materials, accordingly, the weather resistance and the glow wire resistance of the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material can be greatly improved on the basis that the excellent mechanical properties and the post-processing performance of the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material are guaranteed, the GWIT temperature of the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material can be increased and reaches 850 DEG C, the surfaces of the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material are free of bubble, cracking and pulverization phenomena after fluorescent ultraviolet lamp or condensation 800h photo-ageing tests are carried out on the high-GWIT weather-resistant flame-retardant PVC/SAN alloy material, and the mechanical property retention rate is higher than 80%.

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