累托石/NR纳米复合材料的结构与性能研究

王益庆1,张惠峰1,吴友平1,杨军2,汪昌秀3,张立群1
(1.北京化工大学 北京市新型高分子材料制备与加工重点实验室,北京100029;2.株洲时代新材料科技股份有限公
司,湖南 株洲412007;3.湖北名流累托石科技股份有限公司,湖北 武汉430071)

摘要:研究乳液法和熔体法制备的累托石/NR纳米复合材料的结构与性能。结果表明,乳液法累托石/NR纳米复合材料为层间无高分子插入的隔离型纳米复合材料,熔体法累托石/NR纳米复合材料为典型的插层型纳米复合材料;当应变小于100%时,熔体法制备的复合材料应力较大,当应变大于100%时,乳液法制备的复合材料应力较大;当累托石用量较小时,乳液法制备的复合材料撕裂强度高于熔体法制备的复合材料;乳液法和熔体法制备的两种复合材料热稳定性差别不大,均好于纯NR。
关键词:累托石;NR;纳米复合材料;熔体法;乳液法

中图分类号:TQ332;TQ330.38文献标识码:A文章编号:1000890X(2006)03013306
基金项目:国家自然科学基金资助项目(05173003);“十五”国家科技攻关计划项目(2001BA310A12);北京市自然科学基金重点资助项目(2031001);北京市科技新星计划资助项目(H010410010112)
作者简介:王益庆(1975),男,浙江义乌人,北京化工大学讲师,博士,主要从事橡胶纳米复合材料和橡胶加工的研究。


Structures and properties of rectorite/NR nanocomposites

WANG Yiqing1,ZHANG Huifeng1,WU Youping1,YANG Jun2,WANG Changxiu3,ZHANG Liqun1
(1.Beijing University of Chemical Technology,Beijing100029,China;2.Zhuzhou Times New Materials Science and Technology 
Co.,Ltd,Zhuzhou412007,China;3.Hubei Celebrities Rectorite Technology Co., Ltd,Wuhan430071,China)

Abstract:The structures and properties of rectorite/NR composites prepared by emulsion method and melt method respectively were investigated.The results showed that the emulsion method rectorite/NR composite was a typical “separated” nanocomposite,in which no polymer molecule was intercalated into the rectorite layers,and in contrast,the melt method rectorite/NR composite was a typical intercalated nanocomposite;the stress of the melt method nanocomposite was greater as the strain was lower than 100%,and the stress of the emulsion method nanocomposite was greater as the strain was higher than 100%;the tear strength of the emulsion method nanocomposite was higher than that of the melt method nanocomposite as the proportion of rectorite was lower;and the thermal stabilities of the both nanocomposites were similar to each other and better than that of pure NR compound. 
Keywords:rectorite;NR;nanocomposite;melt method;emulsion method

 

 

 

动态热力学分析法评估短纤维/橡胶复合材料界面粘合效果

程俊梅,于广水,赵树高,张萍
(青岛科技大学 橡塑材料与工程教育部重点实验室,山东 青岛266042)

摘要:采用动态热力学分析法评估短纤维/橡胶复合材料(SFRC)界面层的粘合效果。其基本原理为:使用动态热力学分析仪测定SFRC的损耗因子(tanδ),依据公式计算出表征材料界面粘合强度的参数α。试验结果表明,α值越大,材料的界面粘合效果越好,SFRC的拉伸强度、撕裂强度和耐磨性能也越好,但拉断伸长率减小。该方法具有操作简单、数据精确和周期短等优点。
关键词:动态热力学分析法;短纤维/橡胶复合材料;界面层;粘合效果

中图分类号:TQ330.7;O657.99文献标识码: A文章编号:1000890X(2006)03013904
作者简介:程俊梅(1980),女,河南商丘人,青岛科技大学在读硕士研究生,主要从事橡胶复合材料的动态力学性能研究。


Evaluation of adhesive effect on short fibre/rubber interface by DTMA

CHENG Junmei,YU Guangshui,ZHAO Shugao,ZHANG Ping
(Qingdao University of Science and Technology,Qingdao266042,China)

Abstract:The adhesive effect on the short fibre/rubber interface in short fibre/rubber composite(SFRC) was evaluated by DTMA based on the principle that tanδ of SFRC was determined by DTMA tester,and the parameter α for characterizing the adhesive effect was calculated from tanδ .The results showed that the greater parameter α,the better adhesive effect on interface and the better tensile strength,tear strength and abrasion resistance of SFRC,but the lower elongation at break.The evaluation method featured easy operation,accurate data and short test period.
Keywords:DTMA;short fibre/rubber composite;interface;adhesive effect

 

 

 

 

硅烷偶联剂对原位生成二氧化硅/NR复合材料性能的影响

罗洁,胡庆云,权杰,贾红兵
(南京理工大学 高分子系,江苏 南京210094)

摘要:研究硅烷偶联剂对原位生成二氧化硅粒子特征和原位生成二氧化硅/NR复合材料性能的影响。结果表明,在溶胶凝胶反应中加入硅烷偶联剂,原位生成的二氧化硅粒子表面积减小,表面羟基减少,分散较好;在混炼过程中添加硅烷偶联剂,原位生成二氧化硅/NR复合材料的物理性能有明显提高,其中添加硅烷偶联剂A的复合材料物理性能、耐磨性能和耐疲劳性能较好;添加明显提高,其中添加硅烷偶联剂A的复合材料物理性能、耐磨性能和耐疲劳性能较好;添加偶联剂Si75的复合材料耐磨性能较好。
关键词:硅烷偶联剂;原位生成二氧化硅;NR;复合材料

中图分类号:TQ332.1+2;TQ330.38+3/+7文献标识码: B文章编号:1000890X(2006)03014304
作者简介:罗洁(1980),女,河南洛阳人,南京理工大学在读硕士研究生,主要从事高分子复合材料的研究。