氧化和硫化聚合物改性沥青流变性能研究

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1、第２３卷第１期石油化工高等学校学报Vol．２３No．１２０１０年３月JOURNALOFPETROCHEMICALUNIVERSITIESMar．２０１０文章编号：１００６－３９６X（２０１０）０１－００５０－０５氧化和硫化聚合物改性沥青流变性能研究１，２２２１崔文峰，欧彦伟，金勇，王云普（１．西北师范大学化学化工学院，甘肃兰州７３００７０；２．中国石油兰州石化公司，甘肃兰州７３００６０）摘要：在基质沥青中加入一定量的SBR、XSBR、SBS，观察对沥青材料常规性能以及－３０～１００℃下动态力学流变性能的影响。结果表明，加入粉末SBR１５００后改性沥青材料薄膜前后的延度和流

2、变性能都有明显的改进，而硫化共混改性可显著提高低温下改性沥青的粘弹性能，低温性能明显改善；同时高温性能得到提高，改性沥青的车倡辙温度（G／sin＝１kPa）比基质沥青提高δ约１０℃；粘度增大，复合模量提高，在高温区的相位角和损耗因子变小，从而改善了沥青高温粘弹性能。硫化共混改性沥青对使用环境的温度敏感性变小，使改性沥青的高低稳定性能均得到改善，可在高温环境下使用，拓宽了SBR改性沥青的使用范围。关键词：SBS；SBR；XSBR；改性沥青；氧化；硫化；流变性能中图分类号：TE６２６．８６文献标识码：Adoi：１０．３６９６／j．issn．１００６－３９６X．２０１０．０１．

3、０１３RheologicalCharacterizationofSBRModifiedAsphaltsUnderOxidationandSulfurization１，２２２１CUIWen－feng，OUYan－wei，JINYong，WANGYun－pu（１．ChemistryInstituteofNorthwestNormalUniversity，LanzhouGansu７３００７０，P．R．China；２．LanzhouPetrochemicalDivisionofPetrochina，LanzhouGansu７３００６０，P．R．China）Received２９Au

4、gust２００９；revised１０November２００９；accepted２２December２００９Abstract：PolymermodifiedasphaltswerepreparedwithSBR，XSBR，SBSunderoxidationorsulfurizationconditionsusingaspecialmixingtechnique．Thelowtemperaturepropertiesofthebindersweregreatlyimproved，thedynamicmechanicalpropertiesofSBR－modifiedaspha

5、ltsbeforeandafteroxidationorsulfurizationwerecharacterizedat－３０～１００℃byusingdynamicshearrheometry．TheresultsshowthattheadditionofSBR１５００increasedthebinderelasticityatlowtemperature．倡倡AndsulfurizationmodificationisimprovedthecomplexmodolusGandelasticitypropertyathightemperature，whenG／sin＝１k

6、Pa，thetemperatureofPMAis１０℃higherthanthebaseasphaltsaftersulfurization，alsotheδbecamesmallerthanthebaseasphalts，theirtemperaturesusceptibilityisreducedtoagreatextent．Itindicatesthattheviscoelasticityofthemodifiedbinderhadbeenimprovedeffectivelyatthehightemperature．Andthetemperaturesuscept

7、ibilityofthevulcanized－SBRasphaltswerereducedtoagreatextent，theirpropertieswereimprovedapparentlyfromlowtohightemperature，theirapplicationwouldbedevelopedwidelyinthehightemperatureenvironmentconditions．Keywords：PowderSBR；SBS；XSBR；Polymermodifiedasphalts；Oxidation；Su