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ID:33659501
大小:1.86 MB
页数:67页
时间:2019-02-28
《低成本改性氨基磺酸盐高效减水剂合成工艺与性能的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、低成本改性氨基磺酸盐高效减水剂合成工艺与性篦的研究专业:材料学硕士生:何娟指导老师:何廷树教授摘要本文详细介绍了常用的高效减水剂结构类型及性自县睁点;国内、外高效减水剂和氨基磺酸盐高效减水剂的研究应用现状。并且从作用机理入手探讨了减水剂的合成方法及发展趋势。以单因素法为基础优化了传统氨基磺酸盐高效减水剂的合成工艺参数,按照最佳合成工艺参数合成出的产品,其性能得到了改善。以传统氨基磺酸盐高效减水剂合成原理为基础,在合成反应过程中加入了廉价的改性单体u,使产品ASH-JD的成本降低17%。论文详细研究了反应单体的摩尔比、反应温度、时间、浓度、反应溶液的酸减度及甲醛的滴加速度等对产品ASH.JD性
2、能的影响,通过试验,得到了这些因素的最佳水平。按照相关标准,对产品进行了测试,所开发的低成本改性氨基磺酸盐高效减水剂ASH-JD的各项性能如减水率、抗压强度比、增强效果、引气性、坍落度保持效果、与水泥适应性、收缩性能、抗冻融胜能、抗渗胜能等相当于传统氨基磺酸盐高效减水剂,性能价格比优于萘系高效减水剂。关锱I词:高效减水剂:氨基磺酸盐;合成工艺;性能StudyonSynthesizingTechnologyandPerformanceofLow.costModifiedAminosulfonic—basedSuperplasticizerSpeciality:ScienceofMaterial
3、sName:HejuanInstructor:HeT'mg-shuAbstractInthispaper,thetypesandperformancecharacteristicsofcommonlyusedsuperplasticizers,there.archandapplicationactualitiesofsuperplasticizersandaminosLIlfonic-basedsuperplasticiz£rbothinandoutsideChinawereintroducedindetail.Basedontheactionmechanismsofsuperplastic
4、izers,theirsynthesizingmethodsanddevelopmenttrendswerealsodiscussed.’Fheparametersofsynthesizingtechnologyoftraditionalaminosulfonic-basedsuperplasticizerswereoptimizedthroughmono-factormethod.Accordingtothoseoptimumparamelea-s,theperformancesofproductWereimproved.Based011thereactionprkncipleoftrad
5、itionalaminostdfonic—basedsupeiplasticizers,thecheapmodifierwasaddedinthesynthesizingprocess,SOtheproductioncostsofsuperplasticizerASH-JDcanbedecreasedby17%.TheFactorsinfluencingontheperformanceofASH-JDsuchaStheMooreratioofmonomers,thereactiontemperatureandtime,concentration,thepHvalueofreactionsol
6、utionandthedrippyspeedofformaldehydewerestudiedcarefully.Throughexperiments.theoptimumlevelofthosefactorswasgainedAccordingtorelativecriteria,theperformanceofASH-JDsuchasratioofwater-reducing,ratioofcomprcssi、estrength,effectofenhancingseengtl[1’ratioofbleeding,airenlrainmentcontent,effectofkeeping
7、slumpvalue,compatibility、vithcement,resistancetoconcreteshrinkageanddamagebyfi-eezingandthawingandimpermeabilitytowateretcareallequaltothetraditionalanfinosulfonic—basedsuperplasticizers,andtheratioofperfor
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