关键词: 聚丙烯酸酯乳液, 羟乙基纤维素, 电解质稳定性, 结构, 力学性能

Abstract:

Polyacrylate latex was first prepared by using hydroxyethyl cellulose as the chief stabilizer,whose mor-phology was then observed by TEM．and the structure of the grafting copolymer was confirmed by FTIR spectrum.Moreover,the properties of the latex —— the electrolyte stability,the mechanical stability,the freeze-thaw stability and the dilution stability,and the properties of the latex film —— the water absorption and the mechanical property
were investigated and compared with those of the latex prepared by the emulsifier with low relative molecular mass.The results indicate that the latex using hydroxyethyl cellulose as the chief stabilizer is sterically stable.and when compared with the latex prepared by the emulsifier with low relative molecular mass,it is of better electrolyte stabi-lity as well as larger tensile strength and broken elongation,which increase respectively from 14.6 MPa and 462.3% t0 17.1 MPla and 524.6% .

Key words: polyacrylate latex, hydroxyethyl cellulose, electrolyte stab ility, structure, mechanical property