Synthesis of Lignin-Based Charring Agent Containing Phosphorus and Its Application in Flame Retardant Polypropylene

被引：0

作者：

Wang N. ^{[1
]}

Song Y. ^{[1
]}

Li J. ^{[1
]}

Shan X. ^{[2
]}

Yang R. ^{[1
]}

Wu J. ^{[3
]}

机构：

[1] School of Materials Science and Engineering, Changzhou University, Changzhou

[2] School of Environmental and Safety Engineering, Changzhou University, Changzhou

[3] Changshu Sanheng Material Limited Liability Company, Changshu

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 04期

关键词：

Charring agent; Diphenyl chlorophosphate; Flame retardancy; Lignin; Polypropylene;

D O I：

10.16865/j.cnki.1000-7555.2018.04.002

中图分类号：

学科分类号：

摘要：

Using diphenyl chlorophosphate and lignin as raw material, lignin-based charring agent with phosphorus (Lig-P) was synthesized by one-step method, and a series of intumescent flame retardant polypropylene with Lig-P, ammonium polyphosphate and pentaerythritol were prepared by double roller mixer. FT-IR, XPS and TGA were used to characterize the structure and thermal degradation property of Lig-P, and the analysis results suggest that the initial degradation temperature of Lig-P rises from 214℃ to 226℃, and its residue at 500℃ increases from 2% to 35% in air atmosphere, showing that Lig-P has good thermal stability and charring ability. Cone calorimeter test results confirm the significant decrease of peak heat release rate and total heat release of Lig-P-IFR/PP. Furthermore, the analysis results of residual char after cone calorimeter test by digital photograph, SEM and LRS reveal that Lig-P-IFR/PP forms continuous char layer with higher graphitization degree. Moreover, the LOI of Lig-P-IFR/PP reaches 31% as well as its passing UL-94 V-0 rating, and its tensile strength is significantly higher than that of Lig-IFR/PP, and reaches 22.5 MPa. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：7 / 13

页数：6

共 11 条

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