羧基丁腈橡胶的性能研究

                      李晓强1，唐斌1，成奖国2
(1.西北橡胶塑料研究设计院，陕西 咸阳712023；2.西安科技大学 化学与化工系，陕西 西安710054)

摘要：研究羧基丁腈橡胶（XNBR）的硫化特性和物理性能。结果表明，高羧基丁腈橡胶具有硬度、拉伸强度和定伸应力高，耐磨性好，压缩永久变形大，加工安全性较差等特点；低羧基丁腈橡胶的物理性能与NBR接近，加工安全性好；硬脂酸不是高羧基丁腈橡胶的有效防焦剂；白炭黑对XNBR的共价交联有延迟作用。
关键词：羧基丁腈橡胶；硫化特性；物理性能
中图分类号：TQ330.7；TQ333.7文献标识码：A文章编号：1000890X(2004)02006905


作者简介：李晓强(1976)，男，陕西蓝田人，西北橡胶塑料研究设计院助理工程师，学士，主要从事新型橡胶材料及制品的研究与开发工作。



              Study on properties of carboxylated NBR

                                                LI Xiaoqiang1,TANG Bin1,CHENG Jiangguo2
(1.Northwest Research and Design Institute of Rubber and Plastics,Xianyang712023,China;2.Xi’an University of Science and Technology,Xi’an710054,China)

Abstract:The curing behavior and physical properties of carboxylated NBR (XNBR) were investigated.The results showed that the high carboxylated NBR featured high hardness,tensile strength and modulus,good abrasion resistance,but greater permanent set and poorer processing safety;the low carboxylated NBR had similar physical properties and process to those of NBR;the stearic acid was not an effective scorch retardant for high carboxylated NBR;and the silica had a delayed action on cocrosslinking of XNBR.
Keywords:carboxylated NBR;curing behavior;physical properties

　

　

                         并用比对EPDM/IIR内胎胶性能的影响

                       任玉柱1，吴友平1，田明1，张立群1，隋军2，张涛2
    (1北京化工大学 材料科学与工程学院，北京100029；2吉林化学工业股份有限公司，吉林市132022)

摘要：研究不同并用比对国产EPDM/IIR 并用胶加工性能、物理性能、热老化性能和气密性能的影响，并与进口EPDM/IIR并用胶进行对比试验。结果表明，在IIR中添加EPDM可以改善胶料的混炼和挤出特性，对物理性能和热老化性能影响不大,气密性能略有下降;EPDM/IIR并用比为40/60时并用胶的渗透系数为2.51×10-17 m2·(Pa·s)-1；国产EPDM与进口EPDM的性能差别很小，完全可以替代进口EPDM应用于内胎生产。
关键词：IIR；EPDM；内胎；热老化性能；气密性能
中图分类号：TQ3334；TQ3336；TQ3361+2文献标识码：B文章编号：1000890X(2004)02007404


作者简介：任玉柱（1976），男，山西中阳县人，北京化工大学在读硕士研究生，主要从事高分子化学及物理研究。


                            Effect of blending ratio on properties of EPDM/IIR inner tube

                               REN Yuzhu1,WU Youping1,TIAN Ming1,ZHANG Liqun1,SUI Jun2,ZHANG Tao2
(1.Beijing University of Chemical Technology,Beijing100029,China;2.Jilin Chemical Industry Co.Ltd.,Jilin132022,China)

Abstract:The effect of the blending ratio on the processibility,physical properties,aging properties and air tightness of domestics EPDM/IIR was investigated and compared to that of imported EPDM/IIR.The results showed that the mixing and extruding behavior of IIR compound improved by adding EPDM,the physical properties and aging properties changed little,and the air tightness decreased;the permeability coefficient was 251×10-17 m2·(Pa·s)-1 when the blending ratio of EPDM/IIR was 40/60;and the domestic EPDM was similar to the imported EPDM in terms of both processibility and physical properties and could be used instead of the latter in inner tube production.
Keywords:IIR;EPDM;inner tube;heat aging property;air tightness