摘要
以煤油为连续相,水为分散相,Span80丙烯酸酯/Span80/Twen80为复配乳化剂,过硫酸钾和亚硫酸氢钠为引发剂,N,N'-亚甲基双丙烯酰胺为交联剂,丙烯酸、丙烯酸钠为单体,采用反相乳液聚合法合成印染增稠剂。考察了交联剂用量、丙烯酰胺用量、引发剂浓度、单体浓度、聚合温度、反应时间等对增稠剂黏度和聚合转化率的影响,确定了最佳实验条件,并考察了增稠剂的抗电解质性及流变特性。实验结果表明较理想反应条件为:煤油45 g,水相60 g,质量比为0.8:0.3:0.1的三元乳化剂(可聚合乳化剂、Span80与 Twen80)在乳液中质量分数为6.67%,水相中丙烯酸一丙烯酸钠浓度为3 mol/L,总单体中丙烯酸钠摩尔分数为0.82,n(交联剂):n(总单体)=1.803×10^(-3),n(丙烯酰胺):n(总单体)=0.063,m(引发剂用量):m(总单体)=0.036%,反应时间为7 h,反应温度为23℃。该增稠剂具有较好的抗电解质性及流变特性。
Acrylic acid and sodium acrylate solution were used to synthesize printing and dyeing thickener agent by inverse emulsion polymerization with Kerosene oil as continuous phase and water as dispersed phase and Span80 acrylate/Span80/Twen80 as the emulsifier and N, N＇-methylenebisacrylamide as cross-linking and potassium persulfate and sodiumbisulfite as initiator. The effects of dosages of cross-linking agent and acrylamide, initiator concentration, monomer concentration, reaction temperature, reaction time on thickener viscosity and polymerization translation degree have been studied. The anti-electrolyte and theological behavior has also been investigated. The optimum conditions were found as follows： 45 g Kerosene oil, 60 g water, 6.67% emulsifier with the molar ratios of m（SpanS0 acrylate） ： m（Span80） ： m（Twen80）： 0.8 ： 0.3 ： 0.1, monomer concentration 3 mol/L with 82% sodium acrylate, n（cross-linking agent） ： n（monomer） = 1. 803 × 10^-3 , n（acrylamide） ： n（mono- mer） =0. 063%, re（initiator） ： m（monomer） =0. 036%, reaction time is 7 h and reaction temperature is 23 ℃. The printing and dyeing thickener agent has good anti-electrolyte and rheological behavior.
出处
《精细石油化工》
CAS
CSCD
北大核心
2008年第6期39-45,共7页
Speciality Petrochemicals
