文献类型：期刊文献

英文题名：Thermal Stability and Flame Resistance of the Coextruded Wood-Plastic Composites Containing Talc-Filled Plastic Shells

作者：Huang, Runzhou[1] Zhang, Xian[1] Chen, Zhilin[2] Wan, Minli[3] Wu, Qinglin[4]

第一作者：Huang, Runzhou

通信作者：Wu, QL[1]

机构：[1]Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Jiangxi Univ Finance & Econ, Sch Business Adm, Nanchang 330032, Jiangxi, Peoples R China;[4]Louisiana State Univ, Sch Renewable Nat Resources, AgCtr, Baton Rouge, LA 70803 USA

年份：2020

卷号：2020

外文期刊名：INTERNATIONAL JOURNAL OF POLYMER SCIENCE

收录：;EI(收录号：20214511121809);Scopus(收录号：2-s2.0-85089304411);WOS:【SCI-EXPANDED(收录号:WOS:000559036500001)】；

基金：This collaborative study was supported by the Louisiana Board of Regents (grant number LEQSF(2017-19)-RD-B-01); Major projects of Natural Science Foundation of Jiangsu University (18KJA220002); China Postdoctoral Science Foundation: Special Program (2017T100313); China Postdoctoral Science Foundation: General Program (2016M601821); Postdoctoral Science Foundation of Jiangsu Province: A Program (1601027A); and USDA NIFA McIntire Stennis project (grant number 1000017).

语种：英文

摘要：Talc is a popular filler for the fabrication of plastic composites. The presence of talc helps improve mechanical, thermal, and flame resistance properties of the composite. In this work, we report the influence of a talc-filled plastic shell layer on thermal stability and fire flammability of the core-shell structured wood high-density polyethylene (HDPE) composites manufactured through coextrusion. The result showed that morphological analysis of the char layer after combustion confirmed the formation of a continuous surface char layer with talc addition in the composites, helping block fire penetration and enhance overall fire resistance of the composites. The shell thickness averaged at1.0 +/- 0.2 mm, which represents a fair thick shell over a 10 mm thick WPC core layer. The surface of regular wood-filled HDPE showed large cracks, allowing more rapid fire penetration and reducing its fire resistance. At 800 degrees C, average residual weight for all composite was21.5 +/- 13.8%, most of which was attributed to the inorganic nonvolatile talc components. With the increase of talc level, THR values of coextruded WPC decreased from 302.47 MJ/m(2)(5 wt% of talc) to 262.96 kW/m(2)(50 wt% of talc). When talc content in the shell layer was less than 25 wt%, the flame resistance properties were slightly enhanced compared with the composites containing unmodified HDPE shells. When talc content in the shell exceeded 25 wt%, the composite's total heat release and its rate substantially decreased.