Synthesis And Characterization Of Anti-electrolyte Thickening Agent

The purpose of this study is to synthesize polypropylene thickeners with strong thickening ability and good electrolyte resistance.Reverse emulsion polymerization is used.Aviation kerosene as continuous phase,acrylamide,isooctyl acrylate and acrylic acid as monomers,water as medium,Span-80 as emulsifier,N-N '-methylene bis acrylamide.For crosslinking agent and potassium persulfate as initiator,Tween-80 was used to reverse the phase at the end of the reaction,and some ammonia was added to adjust PH=7,stirring for 45 minutes at room temperature,finally the white product was obtained.Through single factor experiment and response surface methodology optimization design experiment,the optimum process parameters were determined as follows: initiator dosage was 0.030%,crosslinking agent dosage was 0.502%,hydrophobic monomer dosage was 1.010%,temperature was 70.663%,viscosity before brine addition was 47.517 Pa.s,viscosity after brine addition was 23.11 Pa.s,viscosity retention rate was 49%.In order to facilitate operation,the optimum process parameters were adjusted to 0.03% initiator,0.50% crosslinker,1.00% hydrophobic monomer and 71 C reaction temperature.Indicator analysis and characterization of self-made thickener were carried out,and printing experiments were carried out on self-made thickener.The results showed that paste prepared with self-made electrolyte-resistant paste had high paste formation rate,good fluidity,and certain electrolyte resistance.The printing pattern was clear,the color was high,the lines were clear,the handle was soft,and there was no leakage.All meet the requirements of thickener for disperse dye printing and reactive dye printing.