相变材料在路面裂缝修补技术中的应用
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摘要
以石蜡为相变材料、聚氨酯/环氧树脂互穿网络聚合物为载体,采用一步法制备含有相变调温功能的路面裂缝修补材料。通过差示扫描量热(DSC),结果表明,材料A的熔化潜热值为45.7 kJ/kg,相变温度为-0.3℃;红外光谱(FT-IR)和热重(TG)结果表明,石蜡很好地分散在互穿网络聚合物载体中,与载体间没有发生化学反应,热稳定性保持在300℃以上。
Using paraffin as phase change material, polyurethane/epoxy resin interpenetrating polymer networks as carrier, temperature regulation-based crack repairing materials were prepared by one-step method. DSC results show that the melting latent heat and melting temperature of sample A were 45.7 kJ/kg and-0.3 ℃. FT-IR and TG show that paraffin is well dispersed in the polyurethane/epoxy resin interpenetrating polymer networks, which doesnot react with the carrier, and its thermal stability exceeds 300℃. It shows that paraffin-polyurethane/epoxy resin interpenetrating polymer networks have a good chemical stability and thermal stability.
Using paraffin as phase change material, polyurethane/epoxy resin interpenetrating polymer networks as carrier, temperature regulation-based crack repairing materials were prepared by one-step method. DSC results show that the melting latent heat and melting temperature of sample A were 45.7 kJ/kg and-0.3 ℃. FT-IR and TG show that paraffin is well dispersed in the polyurethane/epoxy resin interpenetrating polymer networks, which doesnot react with the carrier, and its thermal stability exceeds 300℃. It shows that paraffin-polyurethane/epoxy resin interpenetrating polymer networks have a good chemical stability and thermal stability.
引文
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[2]WEI S I,BIAO M A,NING L I,et al.Reliability-based assessment of deteriorating performance to asphalt pavement under freeze-thaw cycles in cold regions[J].Construction and Building Materials,2014,68:572-579.
[3]李伟,孙朝云,呼延菊,等.基于路面3D数据的裂缝类型判断方法[J].中国公路学报,2015,28(11):21-28.
[4]王玉顺,朱敏清.高速公路沥青路面预防性养护技术与应用[M].北京:中国建材工业出版社,2008:7-15.
[5]黄红军,杜志鸿,胡建伟,等.环氧树脂共混改性聚氨酯泡沫材料粘附性能研究[J].包装工程,2015,36(13):1-4.
[6]XIA S L,LIU Y L,PEI F Y,et al.Identical steady tribological/performance of graphene-oxide-strengthened polyurethane/epoxy interpenetrating polymer networks derived from graphene nanosheet[J].Polymer,2015,64:62-68.
[7]张磊,黄卫,宗海.高性能环氧树脂处治水泥混凝土路面裂缝研究[J].公路交通科技,2006,23(8):9-13.
[8]WANG R,WANG H Y,SUN L Y,et al.The fabrication and tribological behavior of epoxy composites modified by the threedimentional polyurethane sponge reinforced with dopamine functionalized carbon nanotubes[J].Applied Surface Science,2016,360:37-44.
[9]李文虎,何丽红,朱洪洲,等.PEG/SiO2相变颗粒对沥青混合料储热及高温性能的影响[J].公路交通科技,2015,32(4):16-20.
[10]戴晓丽,陈振乾,王登云.定形相变材料的有效导热系数研究[J].太阳能学报,2014,35(4):664-669.
[11]MA B,ADHIKARI S,CHANG Y J,et al.Preparation of composite shape-stabilized phase change materials for highway pavements[J].Construction and Building Materials,2013,42:114-121.
[12]KIM D,JUNG J,KIM Y,et al.Structure and thermal properties of octadecane/expanded graphite composites as shapestabilized phase change materials[J].International Journal of Heat and Mass Transfer,2016,95:735-741.
[13]赵亮,方向晨,王刚,等.石蜡/改性Al2O3相变储能材料的制备与性能研究[J].太阳能学报,2014,35(10):2060-2064.
[14]CHANG S J,WI S,J S-G,et al.Thermal performance evaluation of macro-packed phase change materials(PCMs)using heat transfer analysis device[J].Energy and Buildings,2016,117:120-127.
[15]冯哲,虎东霞,赵龙,等.相变材料在道路工程中的研究现状综述[J].材料导报,2015,29(25):144-147.