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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
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- 학위논문
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- 지도교수
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- 2013
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초록· 키워드
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The fibrid is a material of a complex fibrous, film-like, or intermediate form. The development of fibrid was prompted by an attempt to produce 100% synthetic paper and high-strength nonwoven materials. The diameter of the particles varies 20∼50㎛, and 100∼10,000㎛. The optimal form and size of the particles depends in each case on the area of application.
The literature contains descriptions of several methods of producing fibrid, which can be divided into dry and wet methods. That polymeric products are formed by the wet method as a result of the mixing of two liquid flows(the polymer solution and the precipitation liquor). And the form of fibrid is the result of two processes, viz. a wave process and diffusion. The life span and break-up pattern of polymer depend on the interphase surface tension, the viscosity of the polymer, and the ratio speeds of the polymer and medium.
In this study, m-aramid was polymerized using low temperature solution polymerization an equal molar ratio of MPD and IPC in DMAc. The meta-aramid solution was prepared by dissolving in DMAc. And the ethanol was used as coagulation bath. The rotating speed, concentration of m-aramid solution were the main factors on effecting th formation and morphology of fibrid. Meta-aramid paper was produced from m-aramid fiber with meta-aramid fibrid through wet-laying.
The properties of the m-aramid fibrid on the processing condition were investigated using image analyzer, optical microscope, SEM. freeness tester. The characterizations of resultant meta-aramid paper were analyzed using techniques based on morphology, thickness, air permeability, mechanical properties.
The literature contains descriptions of several methods of producing fibrid, which can be divided into dry and wet methods. That polymeric products are formed by the wet method as a result of the mixing of two liquid flows(the polymer solution and the precipitation liquor). And the form of fibrid is the result of two processes, viz. a wave process and diffusion. The life span and break-up pattern of polymer depend on the interphase surface tension, the viscosity of the polymer, and the ratio speeds of the polymer and medium.
In this study, m-aramid was polymerized using low temperature solution polymerization an equal molar ratio of MPD and IPC in DMAc. The meta-aramid solution was prepared by dissolving in DMAc. And the ethanol was used as coagulation bath. The rotating speed, concentration of m-aramid solution were the main factors on effecting th formation and morphology of fibrid. Meta-aramid paper was produced from m-aramid fiber with meta-aramid fibrid through wet-laying.
The properties of the m-aramid fibrid on the processing condition were investigated using image analyzer, optical microscope, SEM. freeness tester. The characterizations of resultant meta-aramid paper were analyzed using techniques based on morphology, thickness, air permeability, mechanical properties.
목차
- 목 차 -List of tables ⅲList of figuresⅳAbstract 1제 1 장 서 론 31. 1. 개요 31. 2. Aromatic polymer 71. 3. 고분자 fibrid 111. 3. 1. Fibrid 제조방법 111. 3. 2. Fibrid 형성 메커니즘 141. 3. 3. 응고 161. 4. 메타아라미드 페이퍼 18제 2 장 실 험 202. 1. 메타아라미드 fibrid 제조 202. 1. 1. 메타아라미드 중합 202. 1. 2. Fibrid 제조방법 202. 1. 3. 분석 212. 1. 3. 1. 중합체 분석 212. 1. 3. 2. Fibrid 제조특성 분석 212. 2. 메타아라미드 페이퍼 제조 242. 2. 1. 메타아라미드 페이퍼 제조방법 242. 2. 2. 분석 24제 3 장 결과 및 고찰 273. 1. 메타아라미드 fibrid 분석 273. 1. 1. 중합체 분석 273. 1. 2. 메타아라미드 fibrid 형태적 특성 273. 2. 메타아라미드 페이퍼의 특성 분석 443. 2. 1. 형태적 특성 443. 2. 2. 물리적 특성 443. 2. 3. 역학적 특성 47제 4 장 결 론 49참고 문헌 50
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