专利名称：POLYURETHANE, MODIFIED ASPHALT AND
黄山介绍资料
眼球震颤治疗MIXTURE MATERIAL CONTAINING SAME
AND PAVEMENT STRUCTURE
暖和的拼音
发明人：Dongwei CAO,Haiyan ZHANG,Yongjun
FAN,Lei XIA,Yanjun ZHANG
申请号：US15739662静心咒全文
申请日：20160624
公开号：US20180312437A1
公开日：
20181101
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专利附图：
摘要：A polyurethane is obtained by continuously reacting a polyurethane
prepolymer in an asphalt or asphalt mixture material system under high temperature. The prepolymer is prepared by: adding a polymerization inhibitor, catalyst and isocyanate component in a reaction container, adding a polyol to the reactor while stirring at room temperature under nitrogen, increasing the temperature to 50-80° C., and maintaining the temperature to react for 0.5-6 hours. A polyurethane modified asphalt, a mixture material containing the polyurethane and a polyurethane modified asphalt pavement structure can be prepared. The synthesis condition of the polyurethane is mild, and a condary reaction with the air and an active hydrogen component in the asphalt can occur during maintenance and formation to further increa the strength of a mixture material. The standard Marshall stability at 60° C. meets the petroleum asphalt requirement, such that a rvice life of the asphalt pavement can be incread.
申请人：RESEARCH INSTITUTE OF HIGHWAY MINISTRY OF TRANSPORT,BEIJING ZHONGLU GAOKE HIGHWAY TECHNOLOGY CO., LTD.
地址：Beijing CN,Beijing CN
国籍：CN,CN
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