Properties of phosphorus-containing thermotropic liquid crystal copolyester/poly(ethylene terephthalate) blends

被引：47

作者：

Du, XH ^{[1
]}

Wang, YZ ^{[1
]}

Chen, XT ^{[1
]}

Tang, XD ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Ctr Degradable & Flame Retardant Polymer Mat, Chengdu 610064, Peoples R China

来源：

POLYMER DEGRADATION AND STABILITY | 2005年 / 88卷 / 01期

关键词：

flame retardant; thermotropic liquid crystal copolyester; PET; tensile strength; thermal behaviour; crystallization;

D O I：

10.1016/j.polymdegradstab.2004.02.018

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A thermotropic liquid crystal copolyester containing phosphorus (PLCP) with high flame retardancy (limiting oxygen index, 70%) has been synthesized and blended with PET. The flame retardancy, mechanical properties, crystallization and thermal degradation behaviour of PET/PLCP blends have been investigated via different methods such as LOI values and UL-94 rating, differential scanning calorimetry (DSC), wide-angle X-ray diffractometry (WAXD) and thermogravimetric, analysis (TG). PLCP can dramatically improve the flame retardancy and the melt dripping behaviour of PET. The tensile strengths of PET/PLCP blends increase with the increase of PLCP content. PLCP in PET/PLCP blends acts as a nucleating agent for PET and accelerates its crystallization. PLCP widens the temperature range of PET decomposition. The residues of PET/PLCP blends at high temperatures increase with the increase of PLCP content. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：52 / 56

页数：5

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