| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 고분자 가공/블렌드 |
| 제목 | Dynamic vulcanization and physical properties of Polyamide 6/H-NBR blends |
| 초록 | In this study, PA 6(Polyamide 6) and H-NBR(Hydrogenated Nitrile Rubber) were blended in a brabender plasticoder at 240℃, 100rpm. Mechanical and physical properties of blends were investigated. Dynamic mechanical properties and morphological characteristics were observed. In addition, the effect of dynamic vulcanization with peroxide as a crosslinker was investigated, and influence of peroxide on PA 6 was also examined. From the variation of mixing torque, it was confirmed that high melt viscosity of H-NBR increased mixing torque as H-NBR contents increased. Most mechanical properties were found to decrease with the addition of H-NBR, which is due to the reduced crystallinity of PA 6. In the DMA(Dynamic mechanical analyzer) results, it was confirmed that the storage modulus (G') decreased with increase of H-NBR suggesting phase inversion from PA6 phase to HNBR phase through co-continuous phase. In Morphological observation, the blends shows a two phase structure in which H-NBR is dispersed as domains in the continuous PA6 phase at lower proportions, but as the proportion of HNBR increases beyond 70%, H-NBR also exists as a continuous phase with the addition of H-NBR, To investigate the effects of dynamic vulcanization on the PA 6/H-NBR blends, during melt mixing peroxide was introduced. Mechanical properties of cured blends were lower than uncured blends suggesting that peroxide can affect on PA 6 as well as act as a crosslinker to H-NBR. From the fracture surface as peroxide contents, It can be seen that PA 6 could not make continuous phase at ratio of 50/50 and 40/60 due to Influence of peroxide on PA 6 was investigated. From the results, peroxide increased mixing torque suggesting that peroxide can crosslink PA 6 so, melt viscosity of PA 6 was increased. |
| 저자 | 유영재, 김대진, 박해성, 서관호 |
| 소속 | 경북대 |
| 키워드 | Polyamide 6; H-NBR; blend; dynamic vulcanization |
