Flame Retardant Properties and Char-Forming Mechanism of Synergistic Flame Retardant Thermoplastic Vulcanizates Between the Triazine Charring Agent and Ammonium Polyphosphate

被引：0
|
作者：
Fan M. [1 ]
Feng N. [1 ]
Qu M. [1 ]
Xu J. [1 ]
Wang X. [1 ]
Zhao J. [1 ]
机构：
[1] School of Material Science & Engineering, Dalian Polytechnic University, Dalian
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2019年 / 35卷 / 10期
关键词：
Ammonium polyphosphate; Char-forming mechanism; Flame retardant properties; Intumescent flame retardant; Thermoplastic elastomers; Triazine charring agent;
D O I：
10.16865/j.cnki.1000-7555.2019.0271
中图分类号：
学科分类号：
摘要：
The triazine charring agent (CFA) and ammonium polyphosphate (APP) were compounded into the intumescent flame retardant (IFR), the effects of mass ratio of CFA and APP on the flame retardant properties and the mechanical properties of thermoplastic elastomers (TPV) were investigated by limiting oxygen index test (LOI), vertical burning test (UL-94), cone calorimeter tests (CCT). And the morphology and structure of char residues were analyzed by SEM, RS, XRD and FT-IR to further study the char-forming mechanism. The results show that the TPV/IFR composite has the best flame retardant performance, its LOI is 26.4%, and passes UL-94 V-0 when the IFR content (m(CFA): m(APP)=1: 3) is 40%; CCT results show that the TPV/IFR composites have the excellent flame retardant and smoke suppression properties; the mechanical properties analysis shows that the TPV/IFR composites still have excellent mechanical properties, and its tensile strength and elongation at break are 4.19 MPa and 391.06%, respectively; the morphology and structure analysis of the char residues show that the predominant flame retardant mechanism of the TPV/IFR composites is a condensed phase char-forming flame retardant mechanism, formed a dense graphite coke layer containing P-O-C and P-O-P cross-linked structure after combustion, which acts as s barrier in the transmission of heat and oxygen, thus improving flame retardant properties of the materials. © 2019, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：77 / 83
页数：6
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