Study On The Influencing Factors Of The Impact Strength Of ABS Resins

In this paper, ABS emulsion graft Daqing Petrochemical installations- the body SAN blending method is based on a large number of experiments and data analysis through the study of factors affecting the impact strength of ABS resin, patterns and trends affecting a summary of the factors for the device Find switching brands and product impact strength fluctuations of reference.Studied synthesis stage includes a dispersed phase in the synthesis of PB polymerization, agglomeration, graft polymerization, coagulation, and continuous SAN phase synthesis, mixing the dispersed phase with the continuous phase, granulation, factors involved in each of the studied the main reactant ratios, adding methods and process conditions, through a large number of experimental data aggregated to draw relevant patterns and trends and the impact strength between various factors:① PB chain transfer agent in polymerization of 0.8%-1.0%, a gel content of 72.2%-78.6%, the latex pH higher than 11.5, a solids content of 41%-41.5% in the vicinity of the product, higher impact strength.② agglomeration latex particle size between 250nm-310 nm, the impact strength in the order of acetic agglomeration, pressure agglomeration method, polymer agglomeration; latex particle agglomeration in the vicinity of 380 nm, pH value 11.8- 12.3, higher impact strength products.③ graft polymerization, St / AN ratio of 75 / 25-65 / 35, the graft rubber content of 60%-62% near, cumene hydroperoxide- ferrous sulfate initiator concentration 0.21%, TDM amount of 0.35 down 0.38%, 62 ℃ reaction product conditions, higher impact strength.④ use of anti-coagulation process, sulfuric acid is used as the coagulant dosage in the vicinity of 5%, condensation temperature of 65 ℃, when the aging temperature is 92 ℃ higher impact strength products.⑤ graft powder AN SAN matrix resin content and the AN content in the same proportion of the grafted powder is greater than 45%, the product high impact strength.