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Influences of plasticizer molecular structure and content on flexural fatigue of soft poly(vinyl chloride)
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-11-03 , DOI: 10.1002/vnl.21872 Haiyang Liu 1 , Yanlu Chen 1, 2 , Hui Zhu 1 , Yao Ma 1 , Chengbo Lian 1 , Xinyan Shi 2
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-11-03 , DOI: 10.1002/vnl.21872 Haiyang Liu 1 , Yanlu Chen 1, 2 , Hui Zhu 1 , Yao Ma 1 , Chengbo Lian 1 , Xinyan Shi 2
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In this work, three plasticizers with different molecular structures were used to plasticize poly(vinyl chloride) (PVC), and the influence of different plasticizers on the flexural fatigue properties of soft PVC was investigated. The plasticizer with the best plasticizing effect was selected, and five gradient dosages were set to study the optimal ratio of plasticizer and PVC. It was found that the glass transition temperature of samples with two phthalate plasticizers (DPHP, 1012P) was lower than that with trimellitate plasticizer (TM-8). It has excellent low-temperature mechanical properties and great flexural fatigue resistance. From the comparison of different plasticizer gradient formulations, the glass transition temperature, PVC plastisol viscosity, and melt strength decreased gradually with the increase of plasticizers. When PVC and plasticizer were 1:1 (PVC50P50), the plasticizing effect and the low-temperature toughness of the sample were the best. The breaking energy (W) and fatigue cycles of Bally Flex at −20°C were 5173 J m−3 and 141 000, respectively. It was concluded that W and Bally Flex fatigue life have a good positive correlation n. Thus, tensile test can be simply used to predict Bally Flex fatigue life of samples.
中文翻译：
增塑剂分子结构和含量对软质聚氯乙烯弯曲疲劳的影响
本工作采用三种不同分子结构的增塑剂对聚氯乙烯（PVC）进行增塑，研究了不同增塑剂对软质PVC弯曲疲劳性能的影响。选择增塑效果最好的增塑剂，设定5个梯度用量，研究增塑剂与PVC的最佳配比。发现添加了两种邻苯二甲酸酯增塑剂（DPHP，1012P）的样品的玻璃化转变温度低于添加偏苯三酸酯增塑剂（TM-8）的样品。它具有优良的低温机械性能和良好的抗弯曲疲劳性能。从不同增塑剂梯度配方的比较来看，随着增塑剂的增加，玻璃化转变温度、PVC塑溶胶粘度和熔体强度逐渐降低。当PVC和增塑剂为1:1（PVC50P50）时，试样的增塑效果和低温韧性最好。断裂能 (W ) 和 Bally Flex 在 -20°C 下的疲劳循环分别为 5173 J m -3和 141 000。得出的结论是W和 Bally Flex 疲劳寿命具有良好的正相关关系n。因此，拉伸试验可以简单地用于预测样品的 Bally Flex 疲劳寿命。
更新日期：2021-11-03
中文翻译：
增塑剂分子结构和含量对软质聚氯乙烯弯曲疲劳的影响
本工作采用三种不同分子结构的增塑剂对聚氯乙烯（PVC）进行增塑，研究了不同增塑剂对软质PVC弯曲疲劳性能的影响。选择增塑效果最好的增塑剂，设定5个梯度用量，研究增塑剂与PVC的最佳配比。发现添加了两种邻苯二甲酸酯增塑剂（DPHP，1012P）的样品的玻璃化转变温度低于添加偏苯三酸酯增塑剂（TM-8）的样品。它具有优良的低温机械性能和良好的抗弯曲疲劳性能。从不同增塑剂梯度配方的比较来看，随着增塑剂的增加，玻璃化转变温度、PVC塑溶胶粘度和熔体强度逐渐降低。当PVC和增塑剂为1:1（PVC50P50）时，试样的增塑效果和低温韧性最好。断裂能 (W ) 和 Bally Flex 在 -20°C 下的疲劳循环分别为 5173 J m -3和 141 000。得出的结论是W和 Bally Flex 疲劳寿命具有良好的正相关关系n。因此，拉伸试验可以简单地用于预测样品的 Bally Flex 疲劳寿命。
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