探索耐油、耐高温及低压缩永久变形丁腈橡胶配方研究

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1、天津大学硕士学位论文耐油、耐高温及低压缩永久变形丁腈橡胶配方研究姓名：董兴凯申请学位级别：硕士专业：化学工艺指导教师：曹同玉2000.8.1耐油、耐离浸及低压缩永久变彤丁膪橡胶配方研究摘要在本工作rh蓠先选定了五种丁膪橡胶，即N240S、N240S／N230S(1：1)、N230S、N230S／NBR3604(1：1)和NBR3604，钟；为主体生胶进行试验，在其它体系不变的情况下，分析了各项性能指标(郧氏硬度、拉{审强度、扯断伸长率、压缩永久变形、耐热空气老化性能、14标准油油浸指标、34标准浊浊浸指标等)随丁‘膊橡胶丙

2、烯腈含量的变化关系，优选出了N230S。确定了生胶牌号后又进⋯步对丁腈橡胶硫化体系进行了研究。着重研究了低硫高促体系和硫黄与DCP并髑体系，对这礴零申硫化体系的硫化橡胶分别测定了备顼盹能指标随各体系中参数的变化娥律，最终优选出了琉黄与DCP并用r体系。黼定了硫化体系后又对补强体系进行了磊开究。在高耐磨炭黑、t半补强炭黑、喷雾炭黑、稽法炭黑及通用炭黑五种炭黑中优选出了喷雾炭黑。工作中主要划1丁腈橡胶的丙烯腈含量、硫化体系及补恤体系三个因素对丁艚橡胶性能灼影响进行了探讨，找到了提离”¨；。；橡胶耐油性及耐高温性和降低压缩永久变

3、形的确’效措施。淡㈨址厂、瑗憨的橡皎配方。j／关键词：丁麟橡胶，耐油性，耐高温性，压缩永久变形，配方RecipeStudyofOilResistant，High—TemperatureResistantandLowCompressionSetButadiene—AcrylonitrileRubberAbstractInthepresentwork，firstofall，thefivekindsofbutadiene—acrylonitrileRubbers(NBR)，i．e．N240s，N240s／N230s(1：1)，N

4、230s，N230s椰R3604(1：1)andNBR3604，asunvulcanizedrubbermatrixeswereselectedfortesting．Theninthecaseoffixedmaterialsineachrecipe，therelationshipsbetweenthevariouspropertiesofthevulcanizedrubbers，suchasShorehardness，tensilestrength，eiongationatbreak，compressionset，resi

5、stancetothermalairandresistancestoStandardOil14and3。，andtheacrylonitriledosagesintheNBRswereanalyzedSothattheperfectunvulcanizedbutadiene—acrylonitrilerubberN230swasoptimized．AfterwardsthevulcanizersystemsforNBRswereinvestigated．Wefocussedonthesystemwithhigheracce

6、leratordosageandiowersulfurdosageandonthesystemincorporatingsulfurwithDCP．TheregularityofthepropertyvariationsalongwiththevariousparameterofvulcanizedNBRswascharacterizedrespectivelySOthatthecompositevulcanizationsystemofsulfurwithDCPwasselected．Finally，theeffects

7、ofvariousreinforcers，includinghighabrasionresistancecarbonblack，semi—reinforcingfurnaceb]ack，spl’ayedC&I’benblack，channelblackanduniversalblack，OFithepropertiesofthevulcanizedNIBRswellestudied．Asaresu]t，itprovesthatsprayedblackisoptima]．Ingeneral．inthepresentW01’k

8、theeffectsoftheacrylonitriledosages，vulcanizersandreinforcersonthepropertiesofvulcanizedNBRswerediscussed．TheefF[cientmethodsforimprovingoilresistancean