CIESC Journal ›› 2016, Vol. 67 ›› Issue (7): 3055-3062.DOI: 10.11949/j.issn.0438-1157.20151597

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Preparation and performance characteristic of MAPP flame-retardant EVA foamed composites

LIAN Hanqing, ZHENG Yuying, QIU Hongfeng   

  1. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
  • Received:2015-10-21 Revised:2016-04-22 Online:2016-07-05 Published:2016-07-05
  • Supported by:

    supported by the Science Project in Fujian Province (2015 H0016) and the Scientific and Technological Innovation Project of Fuzhou City (2014-G-72).

MAPP阻燃EVA泡沫复合材料的制备及其性能

连汉青, 郑玉婴, 邱洪峰   

  1. 福州大学材料科学与工程学院, 福建 福州 350108
  • 通讯作者: 郑玉婴
  • 基金资助:

    福建省科技厅引导性项目(2015H0016);福州市科技计划资助项目(2014-G-72)。

Abstract:

The MAPP, as a derivative of ammonium polyphosphate (APP), was synthesized via a grafting reaction between APP and ethylenediamine (EDA). The intumescent flame-retardant was fabricated by the mixture of MAPP, EG, and WF, and introduced into the EVA matrix for the preparation of flame-retardant EVA foamed composites. The FT-IR, XRD, 1H NMR, LOI, UL-94, CONE, SEM, TG, and electronic universal testing machine were applied to appraise the grafting degree, flame-retardant, and mechanical performance of the as-obtained composites, respectively. The results showed that the EDA has been successfully grafted on APP, and the as-prepared MAPP could not only possess desirable flame-retardant performance, water-resistance, as well as a better compatibility with EVA matrix, but also decrease the heat release. It is worth noting that foamed composite obtained the optimum comprehensive properties when the MAPP loading was 20%, and exhibited 28.8% (LOI), V-0 (UL-94), 1.282 MPa (tensile strength), and 326. 40% (elongation), respectively.

Key words: ethylene-vinyl acetate copolymer, ammonium polyphosphate, chemical grafting, flame retardant, composites

摘要:

利用乙二胺(EDA)对聚磷酸铵(APP)进行改性,得到聚磷酸铵衍生物(MAPP)。采用MAPP、石墨(EG)和木粉(MF)复配的方式得到膨胀性阻燃剂,并与EVA复合得到泡沫复合材料。采用FT-IR、XRD、1H NMR表征接枝效果,利用LOI和UL-94测试仪、锥形量热仪(CONE)、TG及SEM等分析材料的阻燃性能、残炭的形态及力学性能。结果表明:EDA已成功接枝在APP上,所形成的MAPP能够有效提高复合发泡材料的阻燃性能、减少热释放量;MAPP/EVA复合发泡材料的残炭层更加致密和完整,能够有效起到隔热、隔氧的作用;并且MAPP能够提高材料的耐水性及与EVA基体的相容性。当MAPP添加量为20%时,体系的LOI可达27.6%,且UL-94为V-0级别,拉伸强度、断裂伸长率分别可达1.282 MPa、236.40%,阻燃材料的综合性能达到最优。

关键词: 乙烯-醋酸乙烯共聚物, 聚磷酸铵, 化学接枝, 阻燃, 复合材料

CLC Number: