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首页> 外文期刊>Composites >Graphite-like carbon nitride and functionalized layered double hydroxide filled polypropylene-grafted maleic anhydride nanocomposites: Comparison in flame retardancy, and thermal, mechanical and UV-shielding properties
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Graphite-like carbon nitride and functionalized layered double hydroxide filled polypropylene-grafted maleic anhydride nanocomposites: Comparison in flame retardancy, and thermal, mechanical and UV-shielding properties

机译：石墨状氮化碳和功能化的层状双氢氧化物填充聚丙烯接枝的马来酸酐纳米复合材料：阻燃性，热，机械和紫外线屏蔽性能的比较

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摘要

Graphite-like carbon nitride (g-C3N4) and borate modified layered double hydroxides (LDH-B) were successfully fabricated by thermal pyrolysis and modified aqueous miscible organic solvent treatment methods, respectively. Then these nano-additives were introduced to prepare polypropylene-grafted maleic anhydride (PP-g-MA)/g-C3N4 and PP-g-MA/LDH-B nanocomposites using a modified solvent mixing strategy. Several important parameters of the nanocomposites including thermal, mechanical and UV-blocking properties were investigated. Results indicated that pure g-C3N4 exhibited 347.6 and 427.2 degrees C increase in onset decomposition temperature under air and nitrogen conditions, respectively, compared with LDH-B. In case of PP-g-MA nanocomposites, both T-10 and T-50 (the temperature at 10% and 50% weight loss, respectively) were improved by 14.6 and 27.7 degrees C, respectively, by the addition of g-C3N4 while those only increased by 2.3 and 17.8 degrees C upon introducing LDH-B. Furthermore, PP-g-MA/g-C3N4 system showed a remarkable increment (9.8 degrees C) in crystallization temperature while an increase of 4.2 degrees C for PP-g-MA/LDH-B nanocomposite. Introducing g-C3N4 and LDH-B into PP-g-MA led to a reduction of 28% and 19% in pHRR, respectively. It was noted that the incorporation of g-C3N4 caused significant improvement in storage modulus from 2445.0 MPa for neat PP-g-MA to 2783.5 MPa for PP-gMA/g-C3N4 while that of PP-g-MA/LDH-B was dramatically decreased by 27.3%. Optical results indicated that PP-g-MA/g-C3N4 was rendered fascinating UV adsorption ability relative to PP-g-MA/LDH-B. It is expected that the novel two-dimensional nanomaterial could bring new creativity into polymer composites. (C) 2015 Elsevier Ltd. All rights reserved.
机译：分别通过热裂解和改性的水溶性有机溶剂改性方法成功地制备了石墨状的氮化碳（g-C3N4）和硼酸盐改性的层状双氢氧化物（LDH-B）。然后，采用改进的溶剂混合策略，将这些纳米添加剂引入以制备聚丙烯接枝的马来酸酐（PP-g-MA）/ g-C3N4和PP-g-MA / LDH-B纳米复合材料。研究了纳米复合材料的几个重要参数，包括热，机械和紫外线阻隔性能。结果表明，与LDH-B相比，纯g-C3N4在空气和氮气条件下的起始分解温度分别提高347.6和427.2摄氏度。对于PP-g-MA纳米复合材料，通过添加g-C3N4，T-10和T-50（分别在失重10％和50％时的温度）分别提高了14.6和27.7摄氏度。而引入LDH-B时，它们仅升高了2.3和17.8摄氏度。此外，PP-g-MA / g-C3N4体系在PP-g-MA / LDH-B纳米复合材料中结晶温度显着升高（9.8℃），而在4.2℃时升高。将g-C3N4和LDH-B引入PP-g-MA可使pHRR分别降低28％和19％。值得注意的是，g-C3N4的引入使储能模量从纯PP-g-MA的2445.0 MPa显着提高到PP-gMA / g-C3N4的2783.5 MPa，而PP-g-MA / LDH-B的储能模量显着提高。大幅下降了27.3％。光学结果表明，相对于PP-g-MA / LDH-B，PP-g-MA / g-C3N4具有迷人的紫外线吸收能力。期望新型二维纳米材料可以为聚合物复合材料带来新的创造力。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composites》 |2015年第9期|277-284|共8页
  • 作者

    Shi Yongqian; Gui Zhou; Yu Bin; Yuen Richard K. K.; Wang Bibo; Hu Yuan;

  • 作者单位

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China;

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China;

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China;

    City Univ Hong Kong, Dept Architecture & Civil Engn, Kowloon, Hong Kong, Peoples R China;

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China;

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Polymer-matrix composites (PMCs); Thermal properties; Thermomechanical; Optical properties/techniques;

    机译：聚合物基复合材料（PMC）;热性能;热机械性能;光学性能/技术;

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