【摘要】 采用专用高分子表面活性剂和转相法制备了系列石蜡-松香乳液,并考察了这些乳液中的表面活性剂种类和石蜡与松香的质量比对中密度纤维板防水性和力学性能的影响。研究结果表明,用苯乙烯和丙烯酸及其衍生物为单体的高分子表面活性剂(HS)和烷基苯聚氧化乙烯醚衍生物的低分子表面活性剂(LS)的混合物能制得稳定的石蜡-松香乳液。表面活性剂用量为5kg/m3时石蜡-松香(质量比1∶2)乳液使纤维板的吸水厚度膨胀率减少23.8%,而弹性模量增加了12.2%。表面活性剂的组成和石蜡与松香的质量比都显著地影响乳液的性能和使用效果。更多还原

【Abstract】 Series of wax-rosin emulsion were prepared using polymeric surfactants designed for the emulsion, and the effects of structure of the surfactant and the mass ratio of wax and rosin on the properties of the emulsion were investigated . The results showed that stable wax-rosin emulsion could be prepared using mixture of polymeric surfactant and the low molecular surfactants(LS) of derivative of alkylbenzyl polyoxyethyene ether. The polymeric surfactant (HS) was made from styrene, acrylic acid and its derivative. The use of emulsion at the mass ratio 1∶2 of wax and rosin could reduce the adsorbing-water expansion coefficient of fibreboard by 23.8 % and increase the modulus of elasticity by 12.2 % at dosage of 5 kg/m 3. The composition of the surfactant and the mass ratios of wax and rosin influenced significantly the properties and performance of the wax-rosin emulsion.更多还原