Preparation and Performance Research of High Performance Cold Regeneration Emulsifier Based on Paper Mill Waste Liquid Purification
Cold-recycling emulsifier is one of the key factors affecting the performance of cold-recycling emulsified asphalt mixture.However,the core raw material of cold-recycling emulsified asphalt is imported from abroad and the price is relatively expensive.In order to study the feasibility of replacing imported lignin with domestic lignin,gas chromatography(GC)and gel chromatography(GPC)are used to study the effects of lignin active sites in different paper mills on the emulsification properties and the properties of cold-recycling mixture.The results showed that:1)The more lignin active sites,the higher the Marshall strength,the better the emulsification property and the stronger of water damage resistance;2)Qingshan Paper has the largest lignin active sites,with an average of 9.48,and its emulsification and mixing properties are relatively excellent,and its mixing properties are significantly better than those of W-5;3)The average number of lignin active sites in Xiangjiang Paper is only 4.42,and the emulsification and mixing properties are relatively poor,and the mixing properties could not meet the specification requirements.Therefore,Qingshan Paper lignin can be used to prepare cold regeneration emulsifier instead of imported lignin.
ligninactive siteemulsificationproperties of mixturepurification of papermaking waste liquid
NETL
NSTL
万方数据
