[1]陈宇飞,等.OMMT改性MDI型聚氨醋胶戮剂的制备及力学性能[J].哈尔滨理工大学学报,2015,(01):6-011.
 CHEN Yu-fei ZHANG Xi-wang,TENG Cheng-jun ZHANG Qing-yu.Preparation and Mechanical Properties of MDI一PU Adhesive Modified by OMMT[J].哈尔滨理工大学学报,2015,(01):6-011.
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OMMT改性MDI型聚氨醋胶戮剂的制备及力学性能()
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《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

卷:
期数:
2015年01期
页码:
6-011
栏目:
材料科学与工程
出版日期:
2015-02-25

文章信息/Info

Title:
Preparation and Mechanical Properties of MDI一PU Adhesive Modified by OMMT
文章编号:
1007一2683(2015)O1一0006一06
作者:
陈宇飞12张希1滕成君3张清宇1
(1.哈尔滨理工大学材料科学与工程学院黑龙江哈尔滨150040;2.哈尔滨理工大学工程中介质及应用技术教育部重点实验室,黑龙江哈尔滨150080 3.哈尔滨市香坊区疾病控制中心,黑龙江哈尔滨150000)
Author(s):
CHEN Yu-fei12 ZHANG Xi-wang1TENG Cheng-jun3 ZHANG Qing-yu1
(1school of material Science and Engineer, Harbin University Science and Techology Harbin 150040,China;2.Key Laboray of Engineering Dieletrics and Aocation Harbin University of Scienc and Techology, Habin 150080 China ;3.The centre of disease control Harbin district 150000 China)
关键词:
OMMT MDI聚氨醋机械性能
Keywords:
modified montmorillonitediphenylmethane diisocyanatepolyurethanemechanical properties
分类号:
TQ323. 8
文献标志码:
A
摘要:
为了研究有机化蒙脱土对聚氨醋力学性能的影响,以二苯基甲烷二异氰酸}q(M叫和聚醚二醇合成聚氨}4}PU)预聚体,二乙烯三胺为扩链剂,环氧树脂(E51)为固化剂,用有机化蒙脱土(OMMT)对其改性,采用原位聚合法合成了有机化蒙脱土(OMMT)/聚氨醋(PU)胶钻剂.通过红外光谱(FT-IR)表征聚合物的结构;X射线衍射(XRD)表征OMMT在基体中层间距的变化;扫描电镜(SEM)观察OMMT在基体中的分散和结构;通过剪切强度、剥离强度、拉伸强度和断裂伸长率的变化分析OMMT对胶钻剂力学性能的影响.结果表明:在基体中OMMT的层间距变大并被剥离成单独片层,OMMT的添加量少于4%时能够均匀地分散在基体中;加入OMTT可以提高PU的综合性能,当OMMT的质量分数为4%时OMMT/PU综合性能最佳,胶膜剪切强度达到最大值8 MPa与纯PU ( 6. 2 MPa}相比提高了29 %,拉伸强度为283. 1 MPa比纯PU (165 MPa)提高了71%,断裂伸长率为569%比纯PU(403%)提高了41%.
Abstract:
In order to analyze the effects of OMMT on PU mechanical properties,polyurethane(PU) was synthesized by diphenylmethane diisocyanate(MDI),polyether diol,diethylenetriamine and organically modified montmorillonite(OMMT) through in-situ polymerization. The structure of the modified PU was characterized by FTIR. The dispersion and structure of OMMT in the matrix were studied by SEM. The influences of the OMMT on theproperties of the PU matrix were investigated by the change of shear strength,peel strength,tensile strength and elongation at break. The results showed that the most of OMMT was fully exfoliated into individual layers and uniformly dispersed in the polystyrene matrix,interlayer spacing of OMMT was increased. The addition of OMMT improved the integrate capability of the PU,the best comprehensive performance of OMMT/PU can be achieved when
the content of OMMT is 4wt%,the maximum shear strength of the OMMT/PU was 8MPa,that was increased by29% than that of pure PU(22. 13MPa),the tensile strength was 283.1 MPa,that was increased by 71%than thatof pure PU(165 MPa),the elongation at break was 569%,that was increased by 41%than that of pure PU(403%).

备注/Memo

备注/Memo:
黑龙江省教育厅科学技术研究面上项目(12531130)
更新日期/Last Update: 2015-08-21