Properties of Calcium Carbonate Whisker Reinforced NR Composites

The calcium carbonate whisker was modified by coupling agent Si69,and the influence of modified calcium carbonate whisker on the properties of NR compounds was investigated.The results showed that,the surface properties of calcium carbonate whisker were improved by coupling agent Si69,and the interface interaction between calcium carbonate whisker and NR matrix was improved,NR compounds were evidently reinforced by the modified calcium carbonate whisker.As the addition level of modified calcium carbonate whisker was 5 phr,the optimum comprehensive properties of cal-cium carbonate whisker/NR composites were obtained.The thermal stability of composites was improved when the modified calcium carbonate whisker was used.