서지주요정보
열연신 공정중 폴리에칠렌 테레프탈레이트 단사의 결정성 및 기계적성질에 대한 연구 = Crystallinity and mechanical property evaluation during the hot stretching process of poly(ethylene terephthalate) monofilament fibers
서명 / 저자 열연신 공정중 폴리에칠렌 테레프탈레이트 단사의 결정성 및 기계적성질에 대한 연구 = Crystallinity and mechanical property evaluation during the hot stretching process of poly(ethylene terephthalate) monofilament fibers / 이기윤.
저자명 이기윤 ; Lee, Kee-Yoon
발행사항 [서울 : 한국과학기술원, 1981].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

4001480

소장위치/청구기호

학술문화관(문화관) 보존서고

MCPE 8118

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Crystallinity, density and mechanical property changes were evaluated during the course of extrusion and hot stretching processes of Poly (ethylene terephthalate) monofilament fibers in this study. Poly (ethylene terephthalate) chips from Sun Kyung Synthetic Fiber Co. were extruded at 260-275℃ through a monofilament die and the extruded monofilaments were quenched at different temperatures (0-40℃). These quenched monofilaments were then stretched at a hot water bath (temp. 70-90℃, stretch ratio from 1:1 to 1:6). The stretched monofilaments were then thermally treated at 195℃ for 30 minutes to measure shrinkage. The degree of crystallinity was determined from the density and X-ray diffraction data. The effect of quenching temperature was shown to be negligible (in the range of temperatures evaluated). The effect of the temperature of the hot stretching bath was that the degree of crystallinity and orientation decreased with increasing temperature. The stretch ratio had the most pronounced effect on the crystallinity and mechanical properties. The general trends were that density, % crystallinity, Yield stress, ultimate tensile stress and modulus showed decrease in the range of stretch ratios from 1:1 to 1:2 while they all showed linear increase from stretch ratios of about 1:2 to 1:6. A maximum shrinkage was noted at the stretch ratios between 1:2 to 1:3 (max. 45%) at 80℃ stretching condition. This could be attributed to the combined effect of increased orientation and increased degree of crystallinity at high stretch ratios.

서지기타정보

서지기타정보
청구기호 {MCPE 8118
형태사항 [iv], 88 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Kee-Yoon Lee
지도교수의 한글표기 : 김성철
지도교수의 영문표기 : Sung-Chul Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 73-76
주제 Matter --Properies.
결정화. --과학기술용어시소러스
물리적 성질. --과학기술용어시소러스
Crystallization.
QR CODE qr code