Abstract
BR/PCIIR 복합체에 대한 분산상의 영향을 분석하기 위하여 예비가교된 CIIR을 BR과 함께 니더가공하여 고무복합체를 제조하였다. 분산상으로 사용된 CIIR 예비가교물을 니더에서 한번 더 가공함으로써 BR/PCIIR 복합체에서 분산상의 입자가 적어지고 균일하게 분산되었다. BR/PCIIR40의 경우 예비가교물의 니더 가공 시간이 복합체의 반발탄성 및 경도에 아무런 영향을 미치지 않았다. 예비가교된 CIIR 입자를 니더기로 가공한 후 BR에 혼합하여 복합체를 제조한 경우, 니더가공하지 않은 복합체의 인장강도에 비하여 10% 이상 현저히 향상되었다. 분산상으로 사용되는 CIIR 예비가교물을 니더로 가공함으로서 복합체의 표면마찰 특성은 그대로 유지하면서도 복합체의 내마모성 및 기계적 성질은 현저히 향상되었다. Rubber composites were prepared by kneading the precured CIIR with BR in order to analyze the effects of the dispersed phase on the BR/PCIIR composites. The particle size of domain in BR/CIIR composites was decreased and homogeneously dispersed by kneading process the precured CIIR used as dispersed phase in kneader once again. In case of BR/PCIIR40, the kneading time of precured CIIR with BR did not have any effect on the rebound resilience and the hardness of the composite. The tensile strength of the composite prepared by kneading precured CIIR particles and then mixing them with BR increased significantly more than 10% when compared to that of the composite which was not kneaded. The composite maintained the surface friction property while increasing anti-abrasion and mechanical properties significantly by kneading the precured CIIR used as dispersed phase.
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