原位生成PNaMAA/NBR纳米复合材料的研究

焦海全，赵素合，苑伟
(北京化工大学 材料科学与工程学院，北京100029)


摘要：采用原位生成法制备聚甲基丙烯酸钠（PNaMAA）/NBR纳米复合材料，研究混炼工艺、硫化剂DCP用量、丙烯酸（MAA）与氢氧化钠的摩尔比和甲基丙烯酸钠（NaMAA）的理论生成量对复合材料物理性能的影响。结果表明，采用先快速加酸后分次加碱的混炼工艺，DCP用量为1.5 份，MAA与氢氧化钠的摩尔比为1.5∶1，NaMAA的理论生成量为30 份，混炼胶在160 ℃×t90条件下硫化，可获得物理性能优异的PNaMAA/NBR纳米复合材料。
关键词：NBR；甲基丙烯酸钠；原位生成；纳米复合材料


中图分类号：TQ330.1+4；TQ333.7文献标识码：A文章编号：1000890X(2004)07038905

作者简介：焦海全(1976)，男，新疆昌吉人，北京化工大学在读硕士研究生，主要从事橡塑制品配方设计和工艺控制的研究工作。


Reinforcement of vulcanized NBR by insitu polymerized sodium methylacrylate

JIAO Haiquan,ZHAO Suhe,YUAN Wei
(Beijing University of Chemical Technology,Beijing100029,China)

Abstract:The nanocomposites of insitu polymerized sodium methylacrylate(PNaMAA)/NBR were prepared and the effects of the mixing procedure,the level of DCP,the molecular ratio of MAA/sodium hydroxide and the theoretical yield of NaMAA on the physical properties of composites were investigated.The results showed that the PNaMAA/NBR nanocomposite with the optimum physical properties was obtained by using 1.5 phr of DCP,MAA/sodium hydroxide with molecular ratio of 1.5∶1,30 phr of NaMAA for theoretical yield,160 ℃×t90 cure and mixing procedure,in which the acid was rapidly added at first,and the alkali was added in batches later.
Keywords:sodium methylacrylate;insitu polymerization;nanocomposite

　

　




PU/有机蒙脱土纳米复合材料的制备和性能研究

宋晓艳1，张玉清1，张杰2，李俊贤2 
（1河南科技大学 化学与制药工程学院，河南 洛阳471003；2黎明化工研究院，河南 洛阳471001）


摘要：采用原位插层聚合法制备PU/有机蒙脱土（OMMT）纳米复合材料。通过X射线衍射和透射电镜分析发现，当OMMT质量分数为001和003时，OMMT完全剥离并较均匀地分散于PU基体中；当OMMT质量分数为005时，OMMT在PU基体中发生部分剥离。热重分析表明，加入OMMT可提高复合材料的耐热性。动态力学分析表明，OMMT对PU模量的影响不大。PU/OMMT复合材料的硬度、弹性模量、拉伸强度和拉断伸长率均比纯PU有所提高。
关键词：PU；有机蒙脱土；纳米复合材料；原位插层聚合法


中图分类号：TQ3238；TQ33038+3文献标识码：A文章编号：1000890X(2004)07039405

基金项目：河南省杰出人才创新基金资助项目（0121002000）

作者简介：宋晓艳（1976），女，山东德州人，现在北京化工大学攻读博士学位，从事功能高分子材料的研究。


Preparation and characterization of PU/organomontmorillonite nanocomposite

SONG Xiaoyan1,ZHANG Yuqing1,ZHANG Jie2,LI Junxian2
(1.Henan University of Science and Technology,Luoyang471003,China;2.Liming Institute of Chemical Technology,Luoyang471001,China)

Abstract:A PU/organomontmorillonite nanocomposite(OMMT) was prepared by insitu intercalative polymerization.It was found by XRD and TEM analysis that OMMT was completely exfoliated and uniformly dispersed in PU matrix in case of 1% OMMT/PU and 3% OMMT/PU composites.The analysis showed that the heat resistance of the nanocomposite improved by adding OMMT.It was indicated by dynamic mechanical analysis that OMMT had little effect on the modulus of PU.All the hardness,elastic modulus,tensile strength and elongation at break of the PU/OMMT nanocomposite were higher than those of PU compound.
Keywords:PU;organomontmorillonite;nanocomposite;insitu intercalative polymerization

　

　


发泡剂和硫化体系对NR/SBR并用海绵胶性能的影响

毕雪玲1，田斌2，王付胜1，王洁炜1，周琼1
(1青岛科技大学 高分子科学与工程学院，山东 青岛266042；2中国船泊工业总公司，北京100080）


摘要：探讨发泡剂和硫黄硫化体系对NR/SBR并用海绵胶硫化发泡特性和物理性能的影响。结果得出，应根据海绵胶的硫化发泡工艺和物理性能要求选用发泡剂AC和DDL系列；采用发泡剂DDL105，硫化体系的硫黄用量为1～12份、促进剂CZ用量为05份，海绵胶的硫化与发泡速度匹配性好，拉断强度较高，回弹性较好。
关键词：海绵；发泡剂；硫化体系；NR；SBR


中图分类号：TQ3364+6；TQ33038+7/+5文献标识码：A文章编号：1000890X(2004)07039904

作者简介：毕雪玲(1960)，女，山东青岛人，青岛科技大学讲师，从事橡胶加工的教学与科研工作。


Effect of blowing agent and curing system on properties of NR/SBR foam

BI Xueling1,TIAN Bin2,WANG Fusheng1,WANG Jiewei1,ZHOU Qiong1
(1.Qingdao University of Science and Technology,Qingdao266042,China;2.Chinas General Boats and Ships Industry Company,Beijing100080,China)

Abstract:The effect of the blowing agent and curing system on the curingblowing behavior and physical properties of NR/SBR foam was investigated.The results showed that the AC and DDL series blowing agents should be selected based on the requirements for the curingblowing behavior;and the better match between curing and blowing speeds and the higher tensile strength and rebound resilience of NR/SBR foam were obtained by using DDL105 blowing agent,1~1.2 phr of sulfur and 0.5 phr of CZ.
Keywords:foam;blowing agent;curing system;NR;SBR