Acrylonitrile is used as a monomer,itaconic acid is used as a comonomer,azobisisobutyronitrile is used as an initiator,and dimethyl sulfoxide is used as a solvent to carry out a polymerization reaction to prepare a PAN polymerization stock solution.Under the same conditions of monomer,comonomer,initiator and solvent,the effects of polymerization reaction temperature,stirring rate and reaction time on the conversion rate of polymer-ized monomer,polymer viscosity and solid content were studied.The results show that during the polymerization process,increasing the reaction temperature can increase the monomer conversion rate and polymer solid content,and at the same time can inhibit the increase of polymer viscosity,and increasing the stirring rate has the same effect.Increas-ing the reaction time can promote the polymerization reaction,but with the increase of the reaction time,the monomer conversion rate,polymer viscosity and solid content increase tend to be stable or even no longer increase.
关键词
碳纤维/聚合/温度/搅拌速率/反应时间
Key words
carbon fiber/polymerization/temperature/stirring rate/reaction time
维普
万方数据