The filling properties in PVC of the composite ground calcium carbonate(GCC) and wollastonite fillers after fine ground and surface modified as well as their reinforcement mechanisms are investigated.

• 研究了简单混合、研磨复合以及表面改性后的重质碳酸钙/硅灰石复合活性填料填充PVC材料的力学性能与填充增强原理。