지원사업
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
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 서영범
- 발행연도
- 2018
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이 논문의 연구 히스토리 (6)
2018
2017
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High filler loading in printing paper is desirable for papermakers because they can reduce production cost and carbon dioxide emission, if all the paper properties are acceptable. To meet the needs, a new type of filler was developed. The mixture of ground calcium carbonate(GCC) and calcium oxide was pre-floccuated with polyelectrolyte and further treated with carbon dioxide to form new calcium carbonate between GCCs. The final products were called as hybrid calcium carbonate(HCC), and its properties were compared to the GCC and the pre-flocculated GCC. Reults showed increase in tensile strength, smoothness, opacity, stiffness, and bulk for HCC.
In filler loaded paper, the size of the filler affects its strength, optical and surface properties. As the size of the filler increases, tensile strength and bulk usually increases, opacity decreases, and smoothness becomes worse. Pre-flocculation of ground calcium carbonate(GCC) makes large diameter flocs at aqueous medium that consists of multiple GCC particles, but they collapse to 2-dimensional shape in dried paper and makes low bulk paper. The hybrid calcium carbonate(HCC) that was made by in-situ CaCO3 formation between GCC in aqueous medium made high bulk paper without harming tensile strength, bulk, opacity, and smoothness. The GCC that has equivalent size HCC failed to make high opacity and smoothness as much as HCC.
Because HCC has deformable properties. By applying HCC technology, bulk and tensile strength improved simultaneously without lowering other essential physical properties. This may lead to high ash content printing paper.
In filler loaded paper, the size of the filler affects its strength, optical and surface properties. As the size of the filler increases, tensile strength and bulk usually increases, opacity decreases, and smoothness becomes worse. Pre-flocculation of ground calcium carbonate(GCC) makes large diameter flocs at aqueous medium that consists of multiple GCC particles, but they collapse to 2-dimensional shape in dried paper and makes low bulk paper. The hybrid calcium carbonate(HCC) that was made by in-situ CaCO3 formation between GCC in aqueous medium made high bulk paper without harming tensile strength, bulk, opacity, and smoothness. The GCC that has equivalent size HCC failed to make high opacity and smoothness as much as HCC.
Because HCC has deformable properties. By applying HCC technology, bulk and tensile strength improved simultaneously without lowering other essential physical properties. This may lead to high ash content printing paper.
목차
제 1장. 서론 11. 연구배경 12. 연구사 4제 2장. HCC와 GCC 선응집체의 특성 비교 91. 공시재료 92. 실험 내용 102.1 선응집체 제조 112.2 HCC 제조 122.3 형태적 변화 분석 132.4 수초지 제작 및 특성 분석 142.5 충전제 자체 특성 분석 153. 결과 및 고찰 17제 3장. HCC 특성 개선에 관한 연구 341. GCC와 PCC 비율에 따른 HCC 특성 변화 341.1 실험 내용 341.2 결과 및 고찰 352. GCC 크기에 따른 HCC 특성 변화 412.1 실험 내용 412.2 결과 및 고찰 423. 제조 방법에 따른 HCC 특성 변화 473.1 실험 내용 473.2 결과 및 고찰 48제 4장. 결론 54참고문헌 56ABSTRACT 61
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