田朋

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:功能材料化学与化工. 无机化学. 化学工艺

办公地点:大连理工大学西部校区化工综合楼

联系方式:0411-84986470

电子邮箱:tianpeng@dlut.edu.cn

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High effects of smoke suppression and char formation of Ni-Mo/Mg(OH)(2)for polypropylene

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论文类型:期刊论文

发表时间:2021-02-07

发表刊物:POLYMERS FOR ADVANCED TECHNOLOGIES

卷号:31

期号:8

页面范围:1688-1698

ISSN号:1042-7147

关键字:aromatization; catalytic carbonization; core-shell hybrids; MWCNTs

摘要:The Ni-Mo/Mg(OH)(2)(NMM) hybrid as an efficient flame retardancy and smoke suppression composite for polypropylene (PP) was synthesized through Ni-Mo co-precipitation on the surface of Mg(OH)(2)(MH) hexagonal nanosheets. Compared to PP/MH, PP/NMM exhibited excellent smoke suppressing and flame retardancy on the heat release rate, total heat release, smoke production rate, total smoke production, CO production rate and total CO production with the same loading. The reduced hazard of PP/NMM was mainly attributed to the high physical barrier effect of compact char residues on heat, smoke and combustible gas. The mechanism study indicated that multiwalled carbon nanotubes (MWCNTs) generated from the catalytic carbonization of PP by the Ni-Mo compound could play the role of "rebar" to strengthen the char residues, avoid the generation of cracks and form highly compact char layer. Furthermore, MgO could facilitate the production of MWCNTs through changing the pyrolysis process of PP and increasing the reaction time between pyrolysis gas and Ni-Mo compound. Hence, the new Ni-Mo/MH catalyst hybrid may explore the potential for solving the tough problem of the flammability and heavy smoke of the polyolefins system.