타이어고무의 보강재 및 충진재로 사용되는 카본블랙 제품중 시판되고 있는 3종류의 제품을 중량비 기준 혼합하여 입자경분포를 변화시킨 후 이를 천연고무(Natural rubber)에 컴파운딩하여 배합고무의 점탄성특성을 연구하였다. 혼합 카본블랙의 기본물성은 비표면적 (Iodine adsorption number), 구조발달정도 (...
타이어고무의 보강재 및 충진재로 사용되는 카본블랙 제품중 시판되고 있는 3종류의 제품을 중량비 기준 혼합하여 입자경분포를 변화시킨 후 이를 천연고무(Natural rubber)에 컴파운딩하여 배합고무의 점탄성특성을 연구하였다. 혼합 카본블랙의 기본물성은 비표면적 (Iodine adsorption number), 구조발달정도 (DBPabsorption number) 및 착색력 (Tinting strength) 등에 의해 조사하였으며, 배합고무의 점탄성특성은 인장강도, 300% Modulus, 점도, 가황특성, 마모특성 및 발열특성 등을 실험하여 조사하였다. 혼합 카본블랙의 기본물성은 혼합비율 증가에 따라 선형으로 감소하였으나, 점탄성특성은 혼합비율에 따라 서로 다른 변화특성을 나타냈다. 그 중 반발탄성 및 마모특성은 혼합비율에 따라 선형적인 증가 및 감소현상을 각각 나타냈으나 30min. Modulus 및 15min. 인장강도는 혼합비율 l0% 이상에서 일정한 값을 나타냈다. 또한, 혼합비율 10% 이상에서 NR compounds의 Rheographs 곡선 특성변화는 없었으나, Scorch time이 길어지는 것이 관찰되었다.
타이어고무의 보강재 및 충진재로 사용되는 카본블랙 제품중 시판되고 있는 3종류의 제품을 중량비 기준 혼합하여 입자경분포를 변화시킨 후 이를 천연고무(Natural rubber)에 컴파운딩하여 배합고무의 점탄성특성을 연구하였다. 혼합 카본블랙의 기본물성은 비표면적 (Iodine adsorption number), 구조발달정도 (DBP absorption number) 및 착색력 (Tinting strength) 등에 의해 조사하였으며, 배합고무의 점탄성특성은 인장강도, 300% Modulus, 점도, 가황특성, 마모특성 및 발열특성 등을 실험하여 조사하였다. 혼합 카본블랙의 기본물성은 혼합비율 증가에 따라 선형으로 감소하였으나, 점탄성특성은 혼합비율에 따라 서로 다른 변화특성을 나타냈다. 그 중 반발탄성 및 마모특성은 혼합비율에 따라 선형적인 증가 및 감소현상을 각각 나타냈으나 30min. Modulus 및 15min. 인장강도는 혼합비율 l0% 이상에서 일정한 값을 나타냈다. 또한, 혼합비율 10% 이상에서 NR compounds의 Rheographs 곡선 특성변화는 없었으나, Scorch time이 길어지는 것이 관찰되었다.
The viscoelastic characteristic changes of NR compounds were studied by changing the particle size distribution of carbon black. The sample specimen were prepared by the compounding of carbon blacks to natural rubber. The particle size distribution were controlled by the mixing ratio of three differ...
The viscoelastic characteristic changes of NR compounds were studied by changing the particle size distribution of carbon black. The sample specimen were prepared by the compounding of carbon blacks to natural rubber. The particle size distribution were controlled by the mixing ratio of three different kinds of carbon blacks i.e. N-220, N-330 and N-660. The specific surface area via iodine adsorption number, the structure level via DBP absorption number and the tinting power Via tinting strength etc. have measured as the basic properties of carbon black. The viscoelastic properties of NR compounds were investigated by tensile strength. 300% modulus. viscosity, abrasion / rebound, and heat build-up characteristics etc. The basic properties of mixed carbon blacks were observed to decrease linearly with the mixing ratio of N-660, the same was observed in abrasion characteristics, however. the opposite was the case in rebound characteristics. Both 30 min. modulus and 15 min. tensile strength remained constant when the mixing ratio of N-660 exceeded 10 %. Any typical change in rheographs was not observed when the mixing ratio of N-660 exceeded 10 %. On the other hand, the scorch time was increased with the mixing ratio of N-660.
The viscoelastic characteristic changes of NR compounds were studied by changing the particle size distribution of carbon black. The sample specimen were prepared by the compounding of carbon blacks to natural rubber. The particle size distribution were controlled by the mixing ratio of three different kinds of carbon blacks i.e. N-220, N-330 and N-660. The specific surface area via iodine adsorption number, the structure level via DBP absorption number and the tinting power Via tinting strength etc. have measured as the basic properties of carbon black. The viscoelastic properties of NR compounds were investigated by tensile strength. 300% modulus. viscosity, abrasion / rebound, and heat build-up characteristics etc. The basic properties of mixed carbon blacks were observed to decrease linearly with the mixing ratio of N-660, the same was observed in abrasion characteristics, however. the opposite was the case in rebound characteristics. Both 30 min. modulus and 15 min. tensile strength remained constant when the mixing ratio of N-660 exceeded 10 %. Any typical change in rheographs was not observed when the mixing ratio of N-660 exceeded 10 %. On the other hand, the scorch time was increased with the mixing ratio of N-660.
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