尼龙1010分别与未接枝和接枝马来酸酐的高抗冲聚苯乙烯的共混体系研究

研究了尼龙１０１０（ Ｐ Ａ１０１０） 与高抗冲聚苯乙烯（ Ｈ Ｉ Ｐ Ｓ） 及马来酸酐官能化的 Ｈ Ｉ Ｐ Ｓ（ Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ） 间的相互作用，利用 Ｄ Ｓ Ｃ， Ｄ Ｍ Ａ， Ｓ Ｅ Ｍ 及拉伸测试等方法研究了不同组成比的共混物 Ｐ Ａ１０１０／ Ｈ Ｉ Ｐ Ｓ 与 Ｐ Ａ１０１０／ Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 的结晶、玻璃化转变、形态及力学性能．结果表明 Ｈ Ｉ Ｐ Ｓ 与 Ｐ Ａ１０１０ 虽然结构相差甚远，但两者之间仍存在着一定的相互作用；而 Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 可使 Ｐ Ａ１０１０ 的低温熔融峰变小，当 Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 的含量≤５０ ％ 时，随着其含量的增加，共混物中 Ｐ Ａ１０１０ 的结晶温度升高；当含量＞ ５０ ％ 时， Ｐ Ａ１０１０ 发生分级结晶行为，其结晶温度由原来的１７８ ℃降至８３ ℃，同时 Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 与 Ｐ Ａ１０１０ 间的相互作用变大， Ｄ Ｍ Ａ 谱上有明显的新的松驰峰． Ｐ Ａ１０１０／ Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 共混体系的拉伸性能要优于相同组成的 Ｐ Ａ１０１０／ Ｈ Ｉ Ｐ Ｓ 体系．以上现象主要是由于 Ｈ Ｉ Ｐ Ｓ ｇ Ｍ Ａ 与 Ｐ Ａ１０１０ 中的端胺基发生了化学反应，产生了接枝共聚物 Ｐ Ａ１０１０ ｇ Ｈ Ｉ Ｐ

BLENDS OF POLYAMIDE 1010 WITH UNGRAFTED AND MALEIC ANHYDRIDE GRAFTED HIGH IMPACT POLYSTYRENE

The crystalliztation , dynamic mechanical properties, tensile properties andmorphology features of polyamidel 1010( P A1010) blends with the high impact polystyrere( H I P S) and maleic anhydride ( M A) grafted H I P S( H I P S g M A) were examined at a widecomposition range . By comparison the P A1010/ H I P S g M A and P A1010/ H I P S binaryblends ,it wasfoundthatthe size ofthe domains of H I P S g M Awas much smallerthan thatof H I P Sat the same compositions. It was found that the mechanical properties of P A1010/ H I P S g M Ablends were obviously higher than those of P A1010/ H I P Sblends. When thecontent of P A1010 is more than 50wt % in the blends,the crystallization temperatures, Tcs ,of P A1010 increase with increasing the content of H I P S g M A. On the other hand , whenthe content of P A1010 in the blends is less than 35wt% the fraction crystallization isobserved . The same resultis not obtained for the blends of P A1010/ H I P S. These behaviorscould be attributed to the chemical interactions between the two components and gooddispersion in P A1010/ H I P S g M Ablends.