聚合中加入可聚合非离子硼酸酯/甲基丙烯酸甲酯/纳米碳酸钙复合材料对PVC树脂力学性能的影响

Influences of adding polymerizable nonionic borate esters/methyl methacrylate/nano-CaCO_3 composites during polymerization on the mechanical properties of PVC resins

制备了可聚合非离子硼酸酯(BE)/甲基丙烯酸甲酯(MMA)/纳米碳酸钙复合材料,生产出经其改性的PVC树脂,并按管材配方混料,分析了试样的力学性能;并考察了改性PVC树脂在管材中的应用情况。结果表明:①生产BE/MMA/纳米碳酸钙复合材料的最佳工艺配比为:m(BE)∶m(MMA)∶m(纳米碳酸钙)=2∶3∶95。②BE/MMA/纳米碳酸钙复合材料的质量分数为10%时,改性PVC树脂试样的简支梁冲击强度最高。③改性PVC树脂在管材中的应用情况良好,不仅可代替普通PVC树脂,还可降低生产成本。

Polymerizable nonionic borate esters （BE）/methyl methacrylate （MMA）/nano-Ca- CO3 composites were prepared, and PVC resins modified by the composite were produced. Samples were prepared according to the tubing recipes and their mechanical properties were analyzed, and ap- plication of the modified PVC resins in pipes was investigated. The results show that： （1） the best formulation for BE/MMA/nano-CaCO3 composites is re（BE） ： m（MMA） ： m（nano-CaCO3） = 2 ： 3 ： 95. （2） when the contents of BE/MMA/nano--CaC03 composites are 10 wt. %, the charpy im- pact strength of modified PVC resins is the highest. （3） modified PVC resins can be well applied in tubings, not only substituting for common PVC resins, but also reducing production cost.