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MC尼龙的合成研究

         

摘要

Based on anionic polymerization mechanism and prepared under the conditions of static casting, the experiment synthesized MC nylon by solving the major problems of the ratio of catalyst and activator, vacuum control and polymerization temperature in the polymerization process, and also have analysed the affection of synthesis con- ditions on the mechanical properties of polymers by means of determining the variation laws, interaction of reaction time, conversion rate, tensile strength, elongation at break and water absorption. The experimental results show that when the content of NaOH is 0.6 mol/100 mol CPL,the monomer conversion rate is highest. The influence of cata- lyst and activator on the polymerization time, conversion rate and water absorption are similar. In a certain tempera- ture range, with polymerization temperature rising, the conversion rate, tensile strength and elongation increase.%根据阴离子聚合反应机理,通过解决催化剂及活化剂的配比,真空度的控制及聚合温度这些聚合过程中的主要问题,在静态浇铸条件下制备了单体浇铸尼龙,并通过测定聚合时间、转化率、拉伸强度、断裂伸长率、吸水率等指标的变化规律及联系来分析合成条件对高聚物的力学性能的影响。实验结果表明,当催化剂NaOH用量在0.6 mol/100 mol CPL(已内酰胺)时,其单体转化率最高。催化剂和活化剂对聚合时间、转化率及吸水率的影响规律均相似。在一定温度范围内,随着聚合温度的升高,转化率、拉伸强度及断裂伸长率增加。

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