The novel application of chitosan: Effects of cross-linked chitosan on the fire performance of thermoplastic polyurethane

被引：145
作者：
Zhang, Sheng [1 ]
Liu, Xiaodong [1 ,2 ]
Jin, Xiaodong [1 ,2 ]
Li, Hongfei [1 ,2 ]
Sun, Jun [1 ,2 ]
Gu, Xiaoyu [1 ,3 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[2] State Key Lab Special Funct Waterproof Mat, Beijing 100029, Peoples R China
[3] Beijing Univ Chem Technol, Beijing Key Lab Adv Funct Polymer Composites, Beijing 100029, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2018年 / 189卷
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Chitosan; Crosslinking; Thermoplastic polyurethane; Flame retardancy; Thermal stability; INTUMESCENT FLAME-RETARDANT; TRIAZINE CHARRING AGENT; AMMONIUM POLYPHOSPHATE; MECHANICAL-PROPERTIES; COMPOSITES; POLYPROPYLENE; NANOCOMPOSITES; PHOSPHORUS; FIBERS; DEGRADATION;
D O I：
10.1016/j.carbpol.2018.02.034
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this paper, a novel flame retardant (ACS) was prepared by crosslinking chitosan with bis-(4-formylphenyl)-phenyl-phosphonate (ABPO). ACS in association with ammonium polyphosphate (APP) and organic modified montmorillonite (OMMT) were used to prepare flame retardant thermoplastic polyurethane (TPU) composite through melt blending. For the TPU sample containing 10% flame retardants, the limiting oxygen index was increased from 20.8 to 29.0%, the vertical burning (UL-94) rating was upgraded from no rating to V-0, and the peak heat release rate was decreased from 1090 to 284 kW/m(2). The thermal gravity analysis (TGA) indicated that ACS had excellent char formation ability and could greatly enhance the thermal stability of TPU. The tensile strength and elongation at break for flame retardant sample could reach 16.5 MPa and 1443% respectively.
引用
收藏
页码：313 / 321
页数：9
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