混凝土节水保湿养护膜的制备
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摘要
采用溶液聚合法制备高吸水性浆液,然后用浸渍的方式对粘胶非织造布进行吸水性处理,并利用正交试验对反应条件进行了优化,讨论了覆膜处理时热压温度和时间对养护膜表观吸水性能和拉伸性能的影响,并对其重复吸水性能及相关结构进行了分析与表征。结果表明:在单体比AA∶AM=46∶54,改性高岭土质量分数为2%,引发剂质量分数为0.2%,交联剂质量分数为0.1%,反应温度为55℃的条件下,养护膜基布的表观吸水率为5 004.535 g/m2,在不同的热压温度和时间下,养护膜有较好的吸水性能和拉伸性能,重复使用性能良好。
A super-absorbent slurry was prepared with solution polymerization.Rayon non-woven fabric was prepared by the way of dipping,which made them with good water absorption,and the reaction conditions were optimized through ortho-experiment.The influence of hot pressing conditions on apparent water absorption and tensile properties of film was discussed,and the repeated water absorption ability and related structures were also analysised and characterized.The results showed that,when the monomer ratio was AA∶AM=46∶54,modified kaolin content was 2%,initiator content was 0.2%,crosslinker content was 0.1%,and reaction temperature was 55 ℃,the apparent water absorption of membrane-based fabric could reach 5 004.535 g/m2,the water absorption and tensile properties were good in different hot-pressing temperature and time,and the quality of reuse was also very well.
A super-absorbent slurry was prepared with solution polymerization.Rayon non-woven fabric was prepared by the way of dipping,which made them with good water absorption,and the reaction conditions were optimized through ortho-experiment.The influence of hot pressing conditions on apparent water absorption and tensile properties of film was discussed,and the repeated water absorption ability and related structures were also analysised and characterized.The results showed that,when the monomer ratio was AA∶AM=46∶54,modified kaolin content was 2%,initiator content was 0.2%,crosslinker content was 0.1%,and reaction temperature was 55 ℃,the apparent water absorption of membrane-based fabric could reach 5 004.535 g/m2,the water absorption and tensile properties were good in different hot-pressing temperature and time,and the quality of reuse was also very well.
引文
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[15]王璐.SAF非织造成型工艺及吸水凝胶机理研究[D].上海:东华大学,2010.WANG Lu.The researches on forming process andabsorption gel mechanism of SAF non-woven[D].Shanghai:Donghua University,2010.
[2]MCDONALD D B,KRAUSS P D,ROGALLA E A.Early-age transverse deck cracking[J].ConcreteInternational,1995,17(5):49-51.
[3]王艳.浅析大体积混凝土裂缝产生原因及防治措施[J].中国西部科技,2011,10(22):24-25.WANG Yan.Analyses for the causes and preventionmeasures of mass concrete crack[J].Science andTechnology of West China,2011,10(22):24-25.
[4]郭保林,孔祥明.保湿养护方法对混凝土微结构影响研究[J].混凝土世界,2010,16(10):54-57.GUO Baolin,KONG Xiangming.Investigation on theinfluence of the moisture method to concretemicrostructure[J].The World of Concrete,2010,16(10):54-57.
[5]高久平,李曼容,曹汝伟.水泥混凝土路面节水保湿养护膜性能试验[J].湖南交通科技,2006,32(2):66-67.GAO Jiuping,LI Manrong,CAO Ruwei.Test on watersaving and moisture retention film of cement concretepavement[J].Hunan Communication Science andTechnology,2006,32(2):66-67.
[6]混凝土节水保湿养护膜[J].中国水利,2010(10):70.Curing sheet for concrete with water saving and moistureretention[J].China Water Resources,2010,(10):70.
[7]傅艳丽.节水保湿养护膜在混凝土养护中的应用[J].工程质量,2011,S1:63-65.FU Yanli.Application of water saving and moistureretention film in concrete curing[J].ConstructionQuality,2011,S1:63-65.
[8]谷恒亮,岳传德.混凝土保湿养生膜在明哈高速公路的应用[J].中国西部科技,2011,10(19):14.GU Hengliang,YUE Chuande.Application of concretemoisture retentin filmon Mingha highway[J].Scienceand Technology of West China,2011,10(19):14.
[9]李国星,殷保璞,章悦庭,等.高吸水性PVA纤维的研制及其性能分析[J].非织造布,2009,17(6):28-32.LI Guoxing,YIN Baopu,ZHANG Yueting,et al.Preparation of super absorbent fiber-PVA andinvestigation on their performance[J].Non-woven,2009,17(6):28-32.
[10]朱秀林,顾梅,路建美.高吸水性纤维复合体的研究[J].高分子材料科学与工程,1994(6):31-35.ZHU Xiulin,GU Mei,LU Jianmei.Investigation of superabsorbent composite fiber[J].Polymer MaterialsScience and Engineering,1994(6),31-35.
[11]薛茹君,吴玉程.无机纳米材料的表面修饰改性与物性研究[M].合肥:合肥工业大学出版社,2009.XUE Rujun,WU Yucheng,Modification of InorganicNano-material and Investigation on Their Property[M].HeFei:Hefei University of Technology Press,2009.
[12]何晓娜.纳米阻燃粉体/丙烯酸酯复合乳液及涂层的制备与性能研究[D].杭州:浙江理工大学,2010.HE Xiaona.Preparation of flame retardant nano-powder/polyacrylate composite emulsion and coatings andinvestigation on their performance[D].Hangzhou:Zhejiang Sci&Tech University,2010.
[13]章悦庭,胡绍华.高吸水非织造布的研制[J].非织造布,2000,8(2):29-31.ZHANG Yueting,HU Shaohua.Preparation of highwater-absorption non-woven[J].Non-woven,2000,8(2):29-31.
[14]徐博函.纤维素系吸水材料的制备及性能研究[D].北京:北京林业大学,2008.XU Bohan.Preparation and analysis of super absorbentresin from cellulose[D].Beijing:Beijing ForestryUniversity,2008.
[15]王璐.SAF非织造成型工艺及吸水凝胶机理研究[D].上海:东华大学,2010.WANG Lu.The researches on forming process andabsorption gel mechanism of SAF non-woven[D].Shanghai:Donghua University,2010.