2013年9月25日星期三

properties of metal soap

SBS has a good high and low temperature performance and temperature performance , is currently the most widely used  dibasic lead phosphate at home and abroad range of modified bitumen varieties but , SBS and asphalt between the density, molecular weight , viscosity, polarity and solubility parameter difference compared to other properties large , high-temperature storage process prone to SBS and bitumen phase separation phenomenon , segregation test in order to achieve the requirements of product fluorescent brightener  standards modified asphalt is very difficult , this feature greatly limits its application [ 1 ] and therefore , the present study is one of the hot issues resolved SBS modified asphalt production and use in the presence of the main thermal storage stability problems. SongXiaoyan [ 2 ] et al showed that organic salts increases the viscosity of bitumen modified asphalt , Meanwhile modified , reducing the temperature sensitivity of asphalt , improved high temperature performance , low temperature performance of the asphalt little effect . Yang Jinquan [ 3 ] and other studies have shown that people , metallic soap, the lack of improvement in low temperature crack resistance , but can  PVC heat stabilizer for fittings enhance the high temperature stability of asphalt in this issue on the basis of previous studies , presented at the SBS modified asphalt adding metal soaps, prepared SBS / metallic soap compound modified bitumen studied SBS, metal soaps complex with its modified asphalt mixture performance is analyzed SBS / metallic soap compound modified asphalt macroscopic mechanical properties and microstructure morphology between

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