NONISOTHERMAL CRYSTALLIZATION BEHAVIOR OF NYLON 1212/NYLON 6 BLENDS

XIE Tingxiu; YANG Guisheng

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NONISOTHERMAL CRYSTALLIZATION BEHAVIOR OF NYLON 1212/NYLON 6 BLENDS

Research Article | 更新时间：2021-03-19

- NONISOTHERMAL CRYSTALLIZATION BEHAVIOR OF NYLON 1212/NYLON 6 BLENDS
- Acta Polymerica Sinica Issue 2, Pages: 227-230(2005)
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- Published：20 April 2005，
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XIE Tingxiu, YANG Guisheng. NONISOTHERMAL CRYSTALLIZATION BEHAVIOR OF NYLON 1212/NYLON 6 BLENDS. [J]. Acta Polymerica Sinica (2):227-230(2005)
DOI：

XIE Tingxiu, YANG Guisheng. NONISOTHERMAL CRYSTALLIZATION BEHAVIOR OF NYLON 1212/NYLON 6 BLENDS. [J]. Acta Polymerica Sinica (2):227-230(2005) DOI：

摘要

用DSC研究了尼龙 1212

尼龙6及其共混体系的非等温结晶行为 .结果表明

加工历史对尼龙的结晶和熔融行为影响很大 .经双螺杆挤出机挤出的尼龙1212和尼龙6

由于应力诱导分子链取向

其结晶温度都有不同程度的提高

且表现出多重熔融现象 .在共混体系中

尼龙1212分子在共混物的界面上异相成核结晶

提高了其结晶温度

但酸酐化SEBS的加入抑制了分子链的运动又使其结晶温度降低 .共混体系降低了尼龙1212的熔融温度

并使得其高熔点的熔融峰逐渐消失;而尼龙 6的熔融行为基本上没有变化.

Abstract

Nonisothermal crystallization behavior of nylon 6

nylon 1212 and their blends using maleared SEBS as eompatibilizers were studied by differential scanning ealofimetry (DSC)．The results showed that the processing history had a great influence on the crystallization and melt behavior of nylons．The extruded nylons showed improved crystallization temperature(Tc) and multiple melting phenomena due to the stress induced molecular orientation．In blends

the heterogeneous crystallization of nylon 1212 on the interface of nylon 1212 and nylon 6 occurred．Therefore

the Tc of nylon 1212 was increased．With the addition of maleated SEBS

the forrnation of grafted copolymers between nylon 1212 and maleated SEBS restrained the movement of molecules and decreased the Tc of nylon 1212．The melt temperature (Tm) of nylon 1212 was declined and the upper melting peak disappeared with increase of maleated SEBS in blends．However

the melt behavior of nylon 6 in blends was nearly unchanged．

关键词

尼龙6尼龙1212共混物非等温结晶

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