聚氨酯弹性体/BN纳米片复合材料的制备与性能研究
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- 英文论文题名：PREPARATION AND PROPERTY STUDY OF POLYURETHANE ELASTOMER/BN NANOSHEETS COMPOSITE
- 论文作者：袁凤 ; 矫维成 ; 刘文博 ; 王荣国
- 英文论文作者：YUAN Feng ; JIAO Wei-cheng ; LIU Wen-bo ; WANG Rong-guo ; Center for Composite Materials and Structures ; Harbin Industrial of Technology
- 年：2016
- 作者机构：哈尔滨工业大学复合材料与结构研究所;
- 论文关键词：BN纳米片 ; 聚氨酯弹性体 ; 拉伸性能 ; 热稳定性 ; 热导率
- 英文论文关键词：BN nanosheets ; polyurethane elastomer ; tensile properties ; thermal stability ; thermal conductivity
- 会议召开时间：2016-09-22
- 会议录名称：第二十一届全国玻璃钢/复合材料学术年会论文集（《玻璃钢/复合材料》2016增刊）
- 语种：中文
- 分类号：TQ334;TB332
- 学会代码：EUGQ
- 会议名称：第二十一届全国玻璃钢/复合材料学术年会
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国硅酸盐学会玻璃钢分会
- 学会名称：中国硅酸盐学会
- 页数：5
- 文件大小：860k
- 原文格式：O
- 会议级别：全国
摘要
采用预聚合法工艺,将BN纳米片(BNNSs)直接添加到聚己二酸丁二醇酯二醇(PBA)中,一起混合脱水,然后加入4,4'-二苯甲烷二异氰酸酯(MDI)制备预聚体,最后添加1,4-丁二醇(BDO)进行扩链反应,得到聚氨酯弹性体(TPU)/BNNSs复合材料。研究了BNNSs的添加量对TPU/BNNSs复合材料的拉伸性能、热稳定性及热导率的影响。结果表明,随着BNNSs含量的增加,复合材料的断裂伸长率逐渐降低,但拉伸强度呈现出先快速升高后逐渐降低的趋势,当BNNSs的含量为3wt%时,复合材料的拉伸强度达到最大值,比纯TPU拉伸强度提高了68.13%。另外,随着BNNSs添加量的增加,复合材料的热稳定性和热导率均会提高,当BNNSs添加量为7%时,复合材料的初始热分解温度提高了15℃,而热导率为0.2929W/(m·K),是纯TPU树脂热导率的2.39倍。表明BNNSs的加入可以提高聚氨酯弹性体的综合性能。
Based on pre-polymerization method,BNNSs were added to poly(1,4-butanediol hexandioic acid)ester(PBA) directly,and dehydrated together.Then 4,4'-phenyl methane diisocyanate(MDI) were added,to prepare the prepolymer.Finally,1,4-butanediol(BDO) were used as chain extender to improve molecular weight,then,polyurethane elastomer(TPU)/BNNSs composites were prepared.The effects of the content of BNNSs on the tensile properties,thermal stability and thermal conductivity of polyurethane elastomer composites were investigated respectively.The results show that with the increase of BNNSs content,the elongation at break of the composites decreased,but the tensile strength exhibited a trend of improving first and declining then.When the addition of BNSSs was 3%,the tensile strength of composites was best,which was increased by 68.13%than pure TPU.In addition,with the increase of the content of BNNSs,the thermal stability and thermal conductivity of TPU/BNNSs composite both increased.When the conten of BNNSs was 7wt%,the initial thermal decomposition temperature of the composite was improved by 15℃,and the thermal conductivity was 0.2929 W/(m·K),corresponding to a 138.71%increase,indicating that the addition of BNNSs could improve the comprehensive performance of the polyurethane elastomer.
Based on pre-polymerization method,BNNSs were added to poly(1,4-butanediol hexandioic acid)ester(PBA) directly,and dehydrated together.Then 4,4'-phenyl methane diisocyanate(MDI) were added,to prepare the prepolymer.Finally,1,4-butanediol(BDO) were used as chain extender to improve molecular weight,then,polyurethane elastomer(TPU)/BNNSs composites were prepared.The effects of the content of BNNSs on the tensile properties,thermal stability and thermal conductivity of polyurethane elastomer composites were investigated respectively.The results show that with the increase of BNNSs content,the elongation at break of the composites decreased,but the tensile strength exhibited a trend of improving first and declining then.When the addition of BNSSs was 3%,the tensile strength of composites was best,which was increased by 68.13%than pure TPU.In addition,with the increase of the content of BNNSs,the thermal stability and thermal conductivity of TPU/BNNSs composite both increased.When the conten of BNNSs was 7wt%,the initial thermal decomposition temperature of the composite was improved by 15℃,and the thermal conductivity was 0.2929 W/(m·K),corresponding to a 138.71%increase,indicating that the addition of BNNSs could improve the comprehensive performance of the polyurethane elastomer.
引文
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[3]孙萌,段会正,刘锦春.低硬度聚氨酯弹性体的制备及性能[J].特种橡胶制品,2014,35(2):50-53.
[4]李胜方,袁庆荣,柯刚,等.聚苯醚的改性及研究进展[J].精细石油化工进展,2002(12):45-50.
[5]白宝国.聚氨酯弹性体简介[J].山西化工,1994(2):53-60.
[6]傅明源,孙酣经.聚氨酯弹性体及其应用第二版:[M].北京:化学工业出版社,1999:1-52.
[7]李绍雄,朱吕民.聚氨酯树脂[M].南京:江苏科学技术出版社,1992:1-2,5-57,164-168,354-372.
[8]赵雨花,贾林才,亢茂青,等.高性能浇注型聚氨酯弹性体的动态性能研究[J].中国塑料,2003,17(6):52-55.
[9]张晓华,曹亚.高性能透明聚氨酯弹性体的合成研究[J].塑料工业,2002,30(1):8-11.
[10]赵博,丛津生,杨雨富,等.高性能材料.CHDI型聚氨酯弹性体[J].弹性体,2004,14(1):43-47.
[11]Rong Minzhi,Zhang Mingqiu,Zheng Yongxiang,et al.Structureproperty relationships of irradiation grafted nano-inorganic particle filled polypropylene composites[J].Polymer,2001,42(1):167-183.
[12]张志毅,薛艺,刘亚青,等.石墨/聚氨酯弹性体复合材料的制备及性能研究[J].聚氨酯工业,2013,28(3):14-17.
[13]Mahfuz H,Rangari VK,islamms,et al.Fabrication,synthesis and mechanical characterization of nanoparticles influsedpolyurethane foams[J].Composites,Part A;Appl Sci Manuf,2004,35(4):453-460.
[14]刘运学,王杨松,范兆荣,等.TiO_2填充聚氨酯弹性体复合材料的性能[J].高分子材料科学与工程,2009,25(10):67-70.
[15]Rong Minzhi,Zhang Mingqiu,Zheng Hongbing,et al.Surface modification of magnetic metal nanoparticles through irradiation graft polymerization[J].Appl Surf Sci,2002,200:76-93.
[16]杨文彬,张凯,杨序平,等.BN/聚砜导热绝缘复合材料的制备及性能[J].西南科技大学学报,2011,26(1):24-27.
[17]黄文勇,庞浩,廖兵,等.聚氨酯弹性体力学性能影响因素探讨[J].广州化学,2003,28(1):5-8.