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송희열,서관호 건국대학교 산업기술연구원 1996 건국기술연구논문지 Vol.21 No.-
This paper is to study the effects of methoanol fuel solution (MFS) and anti-corrosion additives on the metal and non-metal materials for vehicle component. Aluminum, bronze, brass and SUS 304 were used as metals and epoxy resin, seat packing, gland packing, NBR, silicon rubber as non-metals. All the experiments were carried out at 25℃ and 10 rpm submerging test specimens into the MFS and anti-corrosion additives containing MFS for 90 days. Brass was corroded against MFS with blue color. SUS 304 seems to be corrosion-resistant material because it was not corroded and also weight not decreased. Epoxy resin and silicon rubber were corroded against M80, M80A and gasoline and showed the color change or swelling. NBR showed the significant corrosion against all the MFS. Mono-quarternary ammonium chloride, hexamethylene tertramine and adipic acid as anti-corrosion additives showed unsuitable anti-corrosion effects on the several kinds of metal materials except SUS 304. A commercial anti-corrosion additive, DGOI-100 seems to be superior as an anti-corrosion one for all the metal materials. All the anti-corrosion additives showed unsuitable anti-corrosion effects on the brass, epoxy resin and NBR but good one on SUS 304. A suitable anti-corrosion effects were shown by all the additives on the sillicon rubber except N-methylmorpholine-M90A and hexamethylene tetramine-M100A.
徐寬浩,金祐埴,池一勳 慶北大學校 1989 論文集 Vol.47 No.-
To decrease the blowing temperature of paste PVC, citric acid, boric acid, boric acid, 4,4'-oxybis(benzenesulfonyl hydrazide), and p-toluenesulfonyl hydrazide were mixtured in azodicarbonamide with warious weight ratios, respectively. Boric acid had not an important effect on the decreasing the decomposition temperature of azodicarbonamide. Citric acid had a good effect on the decomposition temperature of azodicarbonamide. But, when the citric acid was used as co-blowing agent, the cell of PVC foam was bad. 4,4'-oxybis(benzenesulfonyl hydrazide) and p-toluenesulfonyl hydrazide had a good effect on the decreasing the decomposition temperature of azodicarbonamide, and the cell of PVC foam was good. Moreover, when 4,4'-oxybis(benzenesulfonyl hydrazide) was used as co-blowing agent, the cell of PVC foam was excellent.
NBR 계 고무롤의 물성개질에 관한 연구(1) : NBR/PVC Blend Systems NBR/PVC 혼합계 고무
서관호,고영철,하현달,조을용 한국고무학회 1995 엘라스토머 및 콤포지트 Vol.30 No.3
To modify the NBR rubber roll which has poor abrasion and chemical resistance, NBR/PVC blends were prepared in various composition ratios. First of all, their miscibility and vulcanization characteristics were investigated. Their abrasion and chemical resistant properties and physical properties were also studied. DSC thermograms for NBR/PVC blends show only one Tg in the entire composition range, demonstrating a perfect miscibility. In the vulcanization characteristics tested by rheometer, maximum torque decreases as PVC contents increased. In the investigation of physical properties of NBR/PVC blends, hardness increases and elongation decreases along with the increasing contents of PVC. On the other hands, tensile strength increases with the increasing contents of PVC up to 11.1 wt. %, and then decreases with higher contents of PVC. While the abrasion resistance of NBR/PVC blends was similar to that of NBR itself, the chemical resistance of NBR/PVC blends was superior to that of NBR.