http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
왁스(wax)함침형 나일론6의 합성과 그의 기계적 성질에 관한 연구
강석춘(Suck Choon Kang),정대원(Dae-won Chung) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.7
In order to make an advanced dry-friction engineering material, wax-impregnated nylons were synthesized by anionic polymerization of ε -caprolactam in the presence of paraffin wax. DNW-125S, which has the lowest melting point among four different kinds of waxs investigated, showed excellent miscibility with ε -caprolactam and no effect on the polymerization reaction. Five different kinds of wax-impregnated nylons from of DNW-125S content 0% to 8% were synthesized and tested. Among the samples, wax-free nylon has the highest yield and tensile strength and hardness, while the specimen with 2% wax has the largest elongation and energy absorption to break. The wax-impregnated nylon with a wax content of 6% showed the smallest friction coefficient under slow sliding speed and low load. But as the sliding speeds were increased to high, the specimen with 8% wax has better friction property.<br/>
왁스와 오일 또는 흑연의 함침에 의한 나일론의 마찰특성 향상에 관한 연구
강석춘(Suckchoon Kang),정대원(Dae-won Chung) 한국자동차공학회 2002 한국 자동차공학회논문집 Vol.10 No.6
The frictional properties of nylon can be improved by the impregnation of lubricants like wax, oil or graphite. The inclusion of these lubricants, on the other hand, decreases the mechanical properties of nylon, such as tensile strength, hardness and impact strength. As an attempt to maximize frictional properties, while minimizing a decrease in the mechanical properties, various kinds of nylon containing 3 wt% wax and varying contents of oil or graphite were prepared. It was found that the synergy effects to improve both friction and anti-wear properties is evidenced by impregnating a combination of wax/oil or wax/graphite. The wear rate of a nylon containing 3 wt% of wax and 1.5 wt% of oil turned out to be 1/4 of that of nylon impregnated with 8 wt% wax or 8 wt% oil. The latter showed the lowest wear rate among the nylons prepared with a single lubricant. In addition, the friction coefficient of the developed nylon was found to be very similar to the nylon with 8 wt% wax only.<br/>
정대원,강석춘 한국공업화학회 1997 응용화학 Vol.1 No.2
Oil-field cast nylons were synthesized by anionic polymerization of ε-caprolactam in the presence of mineral oils. Reaction rate and molecular weight of the product were not affected by the addition of oils less than 8%. Oil-field cast nylon with an oil content of 6% showed a minimum friction coefficient.