Synthesis and Properties of Two Novel Biomass Benzoxazines
Two novel biomass benzoxazines (DPA-F-BOZ and PTL-F-BOZ) have been successfully prepared in this article.Their structures were characterized by FTIR and 1H-NMR.The curing process was determined by non-isothermal DSC and two polybenzoxazine resins (PDPA-F-BOZ, PPTL-F-BOZ) were prepared.The thermal stability of two polybenzoxazines was analyzed by TGA.In N2 atmosphere,T5% of PDPA-F-BOZ resin was 338℃, and the char yield at 800℃ was 50%;The temperature of T5% of PPTL-F-BOZ resin was 372℃, and the char yield at 800℃ was as high as 65%.Their flame-retardant properties were also investigated using vertical burning tests(UL-94) and limiting oxygen index(LOI).Among them, there was no grade in the vertical burning tests for PDPA-F-BOZ, and the LOI was only 27.4.However, PPTL-F-BOZ had been reached V1 rating in UL-94, and the LOI was as high as 36.2.
Yin Ping Hongqiang Yan Zhengping Fang
Lab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningb Lab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningb
国际会议
杭州
英文
182-185
2018-06-14(万方平台首次上网日期,不代表论文的发表时间)