서지주요정보
탄산 칼슘 입자로 충진된 저밀도 폴리에틸렌 블로운 필름 공정에 Kelvin-voigt 모델의 적용 = Application of kelvin-voigt model to blown film process of LDPE filled with calcium carbonate particles
서명 / 저자 탄산 칼슘 입자로 충진된 저밀도 폴리에틸렌 블로운 필름 공정에 Kelvin-voigt 모델의 적용 = Application of kelvin-voigt model to blown film process of LDPE filled with calcium carbonate particles / 장상홍.
저자명 장상홍 ; Chang, Sang-Hong
발행사항 [서울 : 한국과학기술원, 1984].
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소장정보

등록번호

4102764

소장위치/청구기호

학술문화관(문화관) 보존서고

MCPE 8418

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이용가능

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초록정보

Kelvin-Voigt model was applied to blown-film process of pure LDPE and LDPE filled with Calcium Carbonate particles, and orientation and mechanical properties of blown-film were analyzed in order to explain rheological phenomena. Isopropyl triisostearoyltitanate was used to observe the effect of coupling agent. The addition of particles decreased die swelling but increased shear modulus and viscosity. The increment of viscosity was accentuated by higher loading level and lower shear stress. The characteristic retardation time, which was defined as the ratio of viscosity to apparent modulus and obtained from shear viscosity and post extrusion swelling, was nearly independent of the loading level of filler and increased as shear rate decreased. Coupling agent, filler loading level and shear rate gave no influence on the activation energy of the viscous flow of $CaCO_3$-filled-LDPE, the value of which was $10^3$ J/mole. Bubble diameter decreased with increment of draw ratio and decrement of hoop stress, and became smaller when coupling agent was not used. Blown bubble shape measured in blown-film process could be predicted more suitably by Kelvin-Voigt model using Finger's strain tensor than by purely viscous or elastic model. Orientation and mechanical properties were affected by the experimental conditions. As stress in a specified direction increased, birefringence and tensile strength of that direction increased but elongation at break point decreased. As birefringence increased, tensile strength increased but elongation at break point decreased.

서지기타정보

서지기타정보
청구기호 {MCPE 8418
형태사항 [iii], 67, [5] p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Sang-Hong Chang
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 63-65
주제 Polymers.
Matter --Properties.
고분자. --과학기술용어시소러스
물리적 성질. --과학기술용어시소러스
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