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材料导报  2021, Vol. 35 Issue (4): 4194-4199    https://doi.org/10.11896/cldb.19100111
  高分子与聚合物基复合材料 |
LDH-热膨胀微胶囊的合成及发泡EVA复合材料的综合性能
陈玉星1, 王天浩1, 黎晓杰1, 付海1, 何力2, 龚维1,2
1 贵州师范大学材料与建筑工程学院,贵阳 550025
2 国家复合改性聚合物工程技术研究中心,贵阳 550014
Preparation of LDH-Thermal Expansion Microcapsules and Comprehensive Properties of Foamed EVA Composites
CHEN Yuxing1, WANG Tianhao1, LI Xiaojie1, FU Hai1, HE Li2, GONG Wei1,2
1 School of Material and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
2 National Composite Modified Polymer Engineering Technology Research Center, Guiyang 550014, China
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摘要 在悬浮聚合的条件下,以壳层负载的形式合成水滑石LDH-热膨胀微胶囊,并将其作为发泡剂制备发泡乙烯-醋酸乙烯酯(EVA)复合材料。采用扫描电镜与能谱联用仪(SEM-EDS)、热重分析仪(TG)等研究了LDH-热膨胀微胶囊的膨胀性能及发泡EVA复合材料综合性能的变化规律。结果表明:存在于微胶囊表面的LDH提高了其膨胀温度,膨胀倍率增大五倍以上,稳泡温程达到了36 ℃左右。添加LDH-微胶囊明显改善了发泡EVA复合材料的发泡质量和力学性能,其泡孔平均直径为52.4 μm,拉伸强度较添加未改性微胶囊时提高了26.3%。LDH-微胶囊/EVA复合材料具有优良的保温性能,导热系数为0.090 8 W/(m·K)。
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陈玉星
王天浩
黎晓杰
付海
何力
龚维
关键词:  LDH  热膨胀微胶囊  导热系数  发泡材料    
Abstract: Hydrotalcite LDH-thermal expansion microcapsules were prepared by shell loading under suspension polymerization, foamed ethylene-vinyl acetate (EVA) composite was prepared using thermal expansion microcapsules. Expansion properties of LDH-thermal expansion microcapsule and comprehensive properties of foamed EVA composites were investigated by SEM-EDS, TG. The results showed that loading of LDH increased the expansion temperature of the microcapsules, the expansion ratio of LDH-microcapsules is more than 5 times, and the stable foam temperature reaches about 36 ℃. LDH-microcapsules significantly improved the foaming quality and mechanical properties of foamed EVA composite, its cell average diameter was 52.4 μm, the tensile strength is increased by 26.3% compared with the addition of unmodified microcapsules. At the same time, LDH-microcapsules/EVA composite has excellent thermal insulation properties, and the thermal conductivity was 0.090 8 W/(m·K).
Key words:  LDH    thermal expansion microcapsule    thermal conductivity    foaming materials
               出版日期:  2021-02-25      发布日期:  2021-02-23
ZTFLH:  TQ316.6  
基金资助: 贵州省百层次人才项目([2016]5673);贵州省科研机构服务企业行动计划项目([2018]4010)
通讯作者:  gw20030501@163.com   
作者简介:  陈玉星,硕士研究生,就读于贵州师范大学材料与建筑工程学院,主要进行高分子发泡材料与热膨胀微胶囊的研究。
龚维,博士,教授,从事高分子材料结构与性能的研究。
引用本文:    
陈玉星, 王天浩, 黎晓杰, 付海, 何力, 龚维. LDH-热膨胀微胶囊的合成及发泡EVA复合材料的综合性能[J]. 材料导报, 2021, 35(4): 4194-4199.
CHEN Yuxing, WANG Tianhao, LI Xiaojie, FU Hai, HE Li, GONG Wei. Preparation of LDH-Thermal Expansion Microcapsules and Comprehensive Properties of Foamed EVA Composites. Materials Reports, 2021, 35(4): 4194-4199.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.19100111  或          http://www.mater-rep.com/CN/Y2021/V35/I4/4194
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