PVC 专用树脂的现状及发展趋势

摘要

PVC 专用树脂是一种极性非结晶性高聚物，分子之间有较强的作用力，是一种坚硬而脆的材料，抗冲击强度较低。加入冲击改性剂后，冲击改性剂的弹性体粒子可以降低总的银纹引发应力，并利用粒子自身的变形和剪切带，阻止银纹扩大和增长，吸收材料体内的冲击能，从而达到抗冲击的目的。%PVC special resin is a polar non-crystalline polymer, there is a strong force between molecules, and it is a hard and brittle material with low impact strength. After adding impact modifiers, elastomeric particles of impact modifiers may lead to lower overall crazing stress and use deformation and shear zones of particles themselves to prevent crazing expansion and growth, thereby to achieve the purpose of impact resistance.