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| 氢氧化镁的改性及其填充聚丙烯复合材料的燃烧性能和结晶行为的研究 | |
| 引用本文： | 陈晓浪,郭少云,于杰,罗筑,杨红军.氢氧化镁的改性及其填充聚丙烯复合材料的燃烧性能和结晶行为的研究[J].功能材料,2007,38(4):676-679. |
| 作者姓名： | 陈晓浪 郭少云 于杰 罗筑 杨红军 |
| 作者单位： | 1. 国家复合改性聚合物材料工程技术中心,贵州省材料技术创新基地,贵州,贵阳,550014;四川大学,高分子研究所,高分子材料工程国家重点实验室,四川,成都,610065 2. 四川大学,高分子研究所,高分子材料工程国家重点实验室,四川,成都,610065 3. 国家复合改性聚合物材料工程技术中心,贵州省材料技术创新基地,贵州,贵阳,550014 |
| 基金项目： | 国家高技术研究发展计划(863计划) , 国家重点基础研究发展计划(973计划) |
| 摘 要： | 研究了硅烷改性剂对氢氧化镁(MH)的表面改性和其填充聚丙烯(PP)复合材料的阻燃性能和结晶行为.用FTIR、XRD和SEM对改性前后MH的结构和形貌进行了分析.结果表明,硅烷处理剂包覆在MH粉体的表面,有效地降低MH粉体的表面能,提高了MH在干态下的分散性.DSC、POM和LOI对PP/MH复合材料的结晶行为和燃烧性能进行了研究.结果表明,未改性的MH对PP有异相成核作用,使结晶峰温度升高;而表面改性剂削弱了填料的异相成核作用.POM结果暗示了MH粒子在基体中的分散性对PP球晶的晶粒形貌和晶粒尺寸起着十分重要的作用.改性后的MH能进一步提高复合材料的LOI. |
| 关 键 词： | 氢氧化镁 聚丙烯 表面改性 阻燃 结晶 |
| 文章编号： | 1001-9731(2007)04-0676-04 |
| 修稿时间： | 2006-07-18 |
Modification of Mg(OH)2 and study of flame-retardant property and crystallization behaviors of PP/Mg(OH)2 composites |
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| CHEN Xiao-lang,GUO Shao-yun,YU Jie,LUO Zhu,YANG Hong-jun.Modification of Mg(OH)2 and study of flame-retardant property and crystallization behaviors of PP/Mg(OH)2 composites[J].Journal of Functional Materials,2007,38(4):676-679. | |
| Authors: | CHEN Xiao-lang GUO Shao-yun YU Jie LUO Zhu YANG Hong-jun |
| Affiliation: | 1. National Engineering Research Center for Compounding and Modification of Polymeric Materials, Materials Engineering and Technology Innovation Center of Guizhou,Guiyang 550014,China; 2. Polymer Research Institute of Siehuan University,The State Key Laboratory of Polymer Materials Engineering,Chengdu 610065,China |
| Abstract: | Magnesium hydroxide(MH),which was modified by silane,was filled into polypropylene as a fire re- tardant.The structure and morphology of untreated and treated MH powders were characterized by FTIR,XRD and SEM.The results show that silane is eoated on surface of MH powders and effectively decreases its surface energies.The adsorption between the silane and the surface of MH powders is physieal adsorption.SEM shows that the treatment agent improves the dispersion of MH powder in dry eondition.The effects of modification a- gent on the flammability and the crystallization of PP/MH composites were studied by limiting oxygen index (LOI),differential scanning calorimetry(DSC)and polarizing optical mieroseopy(POM),respectively.DSC data indicates that Mg(OH)_2 have heterogeneous nucleation effect on PP matrix.However,silane modifier weakens its heterogeneous nucleation effect.POM results show that the dispersed morphology of MH plays an important role in the crystalline morphology and spherulite size of PP crystals.According to LOI,silane treated MH en- hances greatly flame retardaney of PP/MH composite. |
| Keywords: | Mg(OH)_2 polypropylene surface modification flame retardancy crystallization |
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