文章摘要
磷酸铵锌/埃洛石纳米管/环氧树脂纳米复合材料的阻燃性能
Flame Retardancy of Zinc Ammonium Phosphate/Halloysite/Epoxy Nanocomposites
  
DOI:10.16865/j.cnki.1000-7555.2019.0357
中文关键词: 磷酸铵锌  埃洛石纳米管  阻燃剂  环氧树脂
英文关键词: zinc ammonium phosphate  halloysite  flame retardant  epoxy
基金项目:苏州市重点产业技术创新项目(前瞻性应用研究)(SYG201744);江苏省住建厅科技项目 (2017ZD238)
作者单位
董延茂1,赵 丹2,宗 泽2,JosephH Koo3 1. 苏州科技大学 化学生物与材料工程学院, 江苏 苏州 215009 2. 苏州科技大学 环境科学与工程学院, 江苏 苏州 2150093. Department of Mechanical Engineering at the University of Texas at AustinAustin TX 78712, USA 
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中文摘要:
      采用吸附-化学沉淀法合成了磷酸铵锌/埃洛石纳米管(ZAP/HNT)复合材料,并将ZAP/HNT和Exolit(R)OP 1230膨胀型阻燃剂一起用于阻燃环氧树脂(EP)。采用红外光谱(FT-IR)和扫描电子显微镜(SEM)对合成的ZAP/HNT及其环氧树脂复合物(EP/ZAP/HNT)进行了表征,ZAP/HNT中ZAP的粒径约为20~50 nm,表面的-OH与环氧基发生了作用,在EP中分散均匀。热分析(TG)表明,ZAP/HNT在加热过程中脱水、脱氨,600 ℃时总质量损失约11.34%。790 ℃时, EP/ZAP/HNT的残炭量为26%,具有良好的成炭性能。用微尺度燃烧量热法(MCC)和UL-94等方法分析了复合材料的阻燃性能,与EP相比,EP/ZAP/HNT(25%)的HRR下降幅度可达到58.82%。ZAP/HNT 与OP 1230具有明显的协同阻燃性能。对炭渣用能谱仪(EDS)和SEM进行了分析,P、Al、Si、Zn主要分布在残渣外层,说明燃烧中阻燃剂在气体的作用下迁移到表面,形成由焦磷酸盐、碳、Al2Si2O5等金属氧化物组成的稳定炭层。
英文摘要:
      Zinc ammonium phosphate/halloysite (ZAP/HNT) composites were synthesized by an adsorption-chemical precipitation method. To enhance the flame retardancy and mechanical properties of epoxy (EP), the Exolit(R) OP 1230 flame retardant was employed in EP combining with ZAP/HNT. The ZAP/HNT and EP/ZAP/HNT were characterized by infrared spectroscopy(FT-IR)and scanning electron microscope (SEM). Results show that the particle size of ZAP is about 20~50 nm. The ZAP/HNT is dispersed uniformly in EP due to the strong reaction between the -OH and epoxy group. Thermal gravity(TG) analysis shows that the dehydrate and deamination occur during heating ZAP/HNT. The total mass loss of ZAP/HNT at 600 ℃ is about 11.34%. The residue mass of EP/ZAP/HNT at 790 ℃ is about 26%, indicating a good carbonization performance. The flame retardancy of composites was tested by micro-scale combustion calorimetry (MCC) and UL-94 methods. Compared to EP, the HRR of EP/ZAP/HNT(25%)is reduced to 58.82%. The synergistic effect of the flame retardancy between ZAP/HNT and OP 1230 was observed. The residue was characterized by energy dispersive spectrometer (EDS) and SEM. P, Al, Si and Zn elements are in the outer layer of the residue, indicating that flame retardants in combustion migrate to the surface under the action of gas, which can help to form a stable carbon layer composed of metal oxides such as pyrophosphate, carbon and Al2Si2O5.
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