【摘要】 探讨了CPVC/PVC合金的最佳配比以及不同填料对CPVC/PVC合金体系热性能和力学性能的影响。动态热稳定性实验结果表明:随着PVC含量增加,CPVC/PVC合金的动态热稳定时间延长,当CPVC/PVC含量为50/50时,最有利于加工。将石墨、玻璃纤维、硅灰石以及复合填料添加到CPVC/PVC(50/50)体系中,均能不同程度提高体系的耐热性能:玻璃纤维最好,每15份玻璃纤维提高13℃左右;其次是石墨,每15份石墨提高3℃左右;复合填料和硅灰石对体系的热性能只有微小的提高。4种填料都会导致体系冲击强度的下降;除玻璃纤维外,其他3种填料均会不同程度的降低体系的拉伸强度。更多还原

【Abstract】 The optimal ratio of CPVC and PVC as well as the effect of different fillers on the heating and mechanical properties of CPVC/PVC blends were studied.The experimental results show that the dynamic thermal stability time of the CPVC/PVC blends increase with the increase of PVC content and the processability are the best when the ratio of CPVC and PVC is 50/50.Heat resistance of CPVC/PVC(50/50) is improved in different extents when graphite,glass fibre,silica fibre and compounding fillers are added into the blend respectively.The heat resistant temperature of the blends is improved by 13 ℃ per 15 phr glass fibre,and 3 ℃ per 15 phr graphite.The influence of compounding fillers and silica fibre on the heat resistance is insignificant.The impact strength and the tensile strength of CPVC/PVC blends are decreased in different extents by the addition of four inorganic fillers.更多还原