• 제목/요약/키워드: paper board sludge

검색결과 18건 처리시간 0.016초

구성형태(構成形態)와 구성비율별(構成比率別)로 제조(製造)한 슬러지-파티클보드의 물리적(物理的) 및 기계적(機械的) 성질(性質) (Physical and Mechanical Properties of Sludge-Particle Board Manufactured by Composition Types and Composition Ratios from Mixed or Layered Paper Sludge and Wood Particle)

  • 이필우;윤형운
    • Journal of the Korean Wood Science and Technology
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    • 제24권1호
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    • pp.17-26
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    • 1996
  • This research was accomplished to evaluate possibility of using paper sludge for the raw materials of wood based panel products. The experimental panels were manufactured by four mixed ratios, the proportion of paper sludge to wood particle: 20:80, 30:70, 40:60, 50:50% (oven dry weight basis) and by three composition types, sludge-particle mixed board, three layered sludge-particle board and three layered particle board. They were tested mechanical (bending strength and internal bond) and physical properties (water absorption, thickness swelling and linear expansion). From the results they were shown that bending strength of mixed and three layered sludge-particle board were decreased with increasing of composition ratios of sludge. And the mechanical and physical properties of the boards of three layered composition types have superior to those of mixed composition type. Although composition ratios of sludge increased, the internal bond strength and dimensional stability of sludge-particle board not decreased quantitatively. We concluded that the mechanical and physical properties of three layered sludge-particle board were similar w those of three layered particle-board (control) made by our laboratory design. Therefore, it was recognized that paper sludge can be used as potential raw material in particle-board manufacturing industry.

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제지(製紙) Sludge-Cement Board의 제조가능성(製造可能性)에 관(關)한 연구(硏究)(I) -수화반응(水和反應)에 의(依)한 경화장해지수측정(硬化障害指數測定)- (Studies on Manufacturing Possibility of Paper Sludge- Cement Board (I) -Measurement of Inhibitory Index by Hydration Reaction-)

  • 김은익;오정수
    • Journal of the Korean Wood Science and Technology
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    • 제21권3호
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    • pp.74-81
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    • 1993
  • This experiment was carried out to investigate the reaction of hydration of paper sludge during the setting of portland cement in a paper sludge, wood-cement-water mixturte. The percentage of paper sludge per cement is 7.5%, 15%, 30% respectively. The result indicated that the sludge of 7.5% had the most effect on reaction of hydration, and the sludge of 15% had moderately inhibitory effect but there is still possibility to make sludge-cement board. Paper sludge of 30%, Pinus koraiensis Sieb. et Zucc and Populus euramericana Guinier were proved to have the worst inhibitory effect on cement hydration, so pretreatment will be needed before making board with paper sludge-cement mixture.

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Contribution to the development of tiles made of paper board sludge

  • Velumani, P.;Manikandan, P.
    • Advances in environmental research
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    • 제9권4호
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    • pp.285-294
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    • 2020
  • Growth of any country rest in the consumption of industrial wastes for its infrastructure amenities. Countries like India positively desires a vital utilization of industrial waste resembling paper sludge in the construction industry to make various building materials. Also, it is the duty of all civil engineers or researchers to attach them in mounting new materials from the waste dumped as land fillings. In every construction project, about 70% of cost accounts for the procurement of materials. If this, can be minimized consequently the cost of construction will certainly be condensed. Research has established that the waste paper sludge can be reused in the construction field for a probable scope. The construction diligences munch through a massive quantity of non-renewable resources. On the additional dispense, more waste paper board sludge ends up in landfills or dumpsites than those recycled. Consequently, waste paper sludge for use as a construction material composes a step towards sustainable development. Keeping this in mind an endeavor has been made to utilize paper board sludge acquired from the paper board industry and used with several pozzolanic and cementitious materials for a specific purpose. The addition of paper sludge has been varied from 0% to 20% by weight of cement. The tests done with the samples expose that four samples showed significant outcomes with remarkable strength and durability properties which guide to move for the next phase of research for producing lightweight tiles.

슬러지-파티클 보드의 제조(製造) 가능성(可能性) 및 구성비율(構成比率)에 관한 기초연구(基礎硏究) (Fundamental Study of Manufacture Possibility and Composition Ratio of Sludge-Particle Board)

  • 이필우;윤형운;김대준;손정일
    • Journal of the Korean Wood Science and Technology
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    • 제21권2호
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    • pp.57-65
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    • 1993
  • The aim of this research was to manufacture sludge-particle board using paper sludge with wood particle and to investigate physical and mechanical properties of various sludge-particle boards, fabricated with ratios of sludge to particle of 10 to 90, 20 to 80, 30 to 70, 40 to 60 and 50 to 50(oven dry weight based). Sludge-particle boards were manufactured by urea-formaldehyde resin, 0.8 target specific gravity, and 10mm thickness. It was possible to manufacture sludge-particle board as the same processing in the present particleboard manufacturing system. This sludge-particle board have different properties as composition ratios of sludge and particle. And sludge-particle board made from 10 percent to 20 percent of sludge mixing ratio have similar mechanical properties compared with control particleboard. Especially, the sludge-particle board made from 10 percent to 40 percent mixing ratios of sludge have superior to control particleboard in internal bond, screw withdrawal holding strength and modulus of elasticity. In the case of dimensional stability, water absorption was increased and thickness swelling was decreased as increased with sludge mixing proportion. The sludge-particle board made of different mixing ratios of our laboratory design was able to concluded that there is possibility of partial substitution of wood particle materials.

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한지슬러지-목재섬유 복합보드의 제조연구 II. 한지슬러지-목재섬유 복합보드의 기계적 성질 (Study on Manufacture of Korean Paper(Hanji) Sludge-Wood Fiber Composite Boards II. Mechanical Properties of Korean Paper(Hanji) Sludge-Wood Fiber Composite Boards)

  • 이필우;이학래
    • Journal of the Korean Wood Science and Technology
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    • 제27권2호
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    • pp.31-37
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    • 1999
  • 한지제지 공정 중에서 발생하는 백색슬러지와 흑색슬러지를 각각 일정비율(10:90, 20:80, 30:70, 40:60)로 목재 섬유와 혼합하고 PMDI, 요소 및 폐놀수지를 이용하여 목표비중 0.60, 0.75, 0.90 별로 복합보드를 제조한 결과 전반적으로 볼 때 PMDI수지를 적용한 백색슬러지-목재섬유 복합보드나 요소수지를 적용한 흑색슬러지-목재섬유 복합보드의 경우 20% 정도까지의 슬러지 첨가는 거의 통상적인 보드에 대용하는 기계적 성질을 지닌다고 믿어진다.

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제지 슬러지-목재 파티클 혼합보드의 내화성과 기계적 성질 (Fire Retardancy and Mechanical Properties of Paper Sludge-Wood Particle Mixed Board)

  • 손정일;이필우
    • Journal of the Korean Wood Science and Technology
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    • 제22권1호
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    • pp.54-65
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    • 1994
  • This research carried out to investigate the effects of inorganic materials in paper sludge on the thermal degradation and of paper sludge addition on physical and mechanical properties of paper sludge-wood particle mixed boards in comparison with unmodified particleboards. Also these unmodified particleboards and paper sludge-wood particle mixed boards were soaked in aqueous solutions of fire-retardant chemicals(diammonium phosphate and zinc chloride), and their fire retardancy were tested by oxygen index method and ISO ignition test to determine the feasibility of paper sludge, industrial waste, as a recyclable resource in fabrication of fire-resisting panels for building material. Since the redrying of fire-retardant treated particleboards and paper sludge-wood particle mixed boards were made by press drying method, this process was a simple and effective method. On the other hand, flexural bending strength and internal bonding strength were also analysed to evaluate mechanical properties through standard method.

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한지슬러지-목재섬유 복합보드의 제조연구 I. 한지슬러지-목재섬유 복합보드의 물리적 성질 (Study on Manufacture of Korean Paper(Hanji) Sludge-Wood Fiber Composite Boards I. Physical Properties of Korean Paper(Hanji) Sludge-Wood Fiber Composite Boards)

  • 이필우;이학래
    • Journal of the Korean Wood Science and Technology
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    • 제27권2호
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    • pp.23-30
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    • 1999
  • 한지제지 공정 중에서 발생하는 백색슬러지와 흑색슬러지를 각각 일정비율(10:90, 20:80, 30:70, 40:60)로 목재 섬유와 혼합하고 PMDI, 요소 및 폐지수지를 이용하여 목표비중 0.60, 0.75, 0.90 별로 복합보드를 제조한 결과 전반적으로 볼 때 백색슬러지를 20% 정도까지 혼합하고 PMDI 수지를 적용하면 통상적인 보드와 유사하거나 오히려 더 좋은 치수안정성을 가지는 것으로 판단된다. 또한 흑색슬러지의 경우는 요소수지를 사용하거나 PMDI 수지의 첨가량을 증가시켜 조절한다면 20%의 슬러지 첨가량까지는 치수안정성 면에서 통상적인 보드와 큰 차이가 없는 보드를 제조할 수 있다고 믿어진다.

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제지(製紙) 슬러지-시멘트보드이 제조가능성(製造可能성)에 관(關)한 연구(硏究)(II) - 물리(物理)·기계적(機械的) 성질(性質) 및 SEM 측정(測定) - (Studies on Manufacturing Possibility of Paper Sludge-Cement Boards (II) - Physical and Mechanical Properties and SEM Observation -)

  • 김사익;오정수
    • Journal of the Korean Wood Science and Technology
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    • 제22권2호
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    • pp.37-45
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    • 1994
  • The possibility of reusing the paper sludge as a raw material of composition board mixed with cement was investigated. For the measurement of physical and mechanical properties, wood coment board and sludge combinend cement boards were fabricated with the three weigh ratios of paper sludge 10 % (SI), 20 % (S II) and 30 % (S III) to cement weight. For adding the cement hardning, $CaCl_2$ was also added to each mixed paste with the ratio of 1 %, 3 % and 5 % to cement weight, respectively. Crystal formation in paper sludge-, wood-cement composites was observed by scanning electron microscope. The results were summarized as follows. 1. Density and partial compressive strength of each specimens were relatively high in the order of sludge I, sludge II, Korean pine, Italian poplar and sludge III, sludge I, Korean pine, sludge II, Italian poplar and sludge III. 2. The mechanical properties of sludge-cement boards (S I and II) were higher than that of wood-cement boards prepared with Korean pine and Italian poplar. But the mechanical properties of wood-cement boards were improved by the adding of $CaCl_2$. 3. Water absorption and thickness swelling were increased with increase of sludge content to cement weight. 4. In SEM observation, sludge-cement composites showed sufficiently formed crystals but wood-cement composites showed poorly formed crystals.

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제지공장의 폐재인 Sludge로 부터 합성 Board의 제조 (The Manufacturing of Composition Board Using Waste Sludge Discharged from Manufacturing Factory)

  • 이병근
    • Journal of the Korean Wood Science and Technology
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    • 제15권2호
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    • pp.99-104
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    • 1987
  • Fiber mats were made at various density levels, using fibers from papermill sludge, ricestraw and various mixtures of the two. The paper mill sludges were collected from Moorim Papermill Co, and Jeonjoo Papermill Co. They were soaked in the liquid sulfur compounds, sulfur-tall oil and sulfurpolyester compounds, and made into fiber-reinforced, sulfur-based composition board. Under optimum conditions of fiber mat preparation and saturation with molten sulfur and modified sulfur, the Young's moduls of the manufactured tiber-reinforced composition board are superior to those of conventional wood-based composition boards. For example, the moduli of elasticity of the composition board made from papermill sludge, with a density of 0.40gm/$cm^3$, were greater than 1,400,000psi as compared 800,000psi for high density hardboard(1.28gm/$cm^3$). The modulus of rupture of the best reinforced composition board manufactured was over 9000psi, comparable to 6000psi of high density hardboard. The proposed Bryant and Lee's theory, "Modified Rule of Mixtures" can be applicable to the nonoriented and short fibrous composition board, when it was modified from "Rule of Mixtures" established by Paul an Jones, and supplemented by Smith and Cox's theory, In the Bryant and Lee's theory of $E_c=\frac{1}{3}aE_fV_f+bE_mV_m$, the constants "a" and "b" for the composition boards made from papermill sludge and the mixtures of ricestraw and the sludge were identified to be in the ranges of 3.29~3.54 and -2.47~-2.80 respectively.

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나노카본블랙과 제지 슬러지를 이용한 전도성 복합보드의 제조에 대한 연구 (Manufacture of Conductive Complex Board Using Nano-Carbon Black and Paper Sludge)

  • 김용렬;손민일
    • 한국응용과학기술학회지
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    • 제25권3호
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    • pp.363-369
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    • 2008
  • In the present work, the choice of the nano carbon black and optimum mixed ratio and effectiveness of the mixed carbon black to get a raw data for a manufacturing method of conductive complex board. Optimum mixed ratio of paper sludge & water was 1 : 2.5 for reformations. HB-41-Y was cheaper than Super-P with the single carbon black. Also electric conductivity of HB-41-Y($6.406{\times}10^{-2}\;{\Omega}cm^{-1}$) was about 6.5 times higher than Super-P($9.741{\times}10^{-3}\;{\Omega}cm^{-1}$) at 20 wt% carbon black. This time optimum mixture ratio of the paper sludge and the carbon black to be about 15 wt%, optimum mixed ratio HB-41Y and Graphite about 3:1 and its electric conductivity was $5.824{\times}10^{-2}\;{\Omega}cm^{-1}$.