조선왕조실록과 해괴제등록 분석을 통한 황충(蝗蟲)의 실체와 방제 역사

박해철,한만종,이영보,이관석,강태화,한태만,김태우,Park, Hae-Chul,Han, Man-Jong,Lee, Young-Bo,Lee, Gwan-Seok,Kang, Tae-Hwa,Han, Tae-Man,Hwang, Seok-Jo,Kim, Tae-Woo 한국응용곤충학회 2010 한국응용곤충학회지 Vol.49 No.4

조선시대의 기록인 조선왕조설록DB와 국역 해괴제등록(國譯 解怪祭謄錄)을 통해 역사적인 해충인 황(蝗) 또는 비황(飛蝗)으로도 불리는 황충(蝗蟲)의 발생상을 분석하여 그 실체를 밝히고 황충의 방제사를 정립하고자 하였다. 황충발생기사 건수는 조선왕조실록 총 261건, 해괴제등록 65건이 있었다. 조선시대 전체를 통해서 황충의 발생기사 건수는 4차례의 피크가 있었는데, 조선초기인 태조-세종대에 가장 발생 빈도가 높았다. 조선왕조실록과 해괴제등록의 황충 기록을 비교한 결과, 해괴제등록 65건으로 조선왕조실록 37건에 비해 월등히 많았지만, 사건기록의 일치성은 낮았다. 조선시대 황충의 개념은 곡식해충뿐 아니라 소나무 등 산림해충까지 포함하는 것이었으며, 해괴제등록의 경우, 충재 중 80%가 황충으로 언급되어 있었다. 따라서 황의 개념은 Saigo (1916, 1937)의 주장이 합당한 것으로 판단되었다. 전체 황해(蝗害) 기사 261건 중 9.5%인 25건에서 황충의 분류학적 실체를 추적할 수 있었는데, 멸강나방 11건, 나방류 9건, 이화명나방 2건, 풀무치 2건, 벼멸구 1건, 벼물바구미 1건으로 Paik (1977)의 주장과 상당부분 일치하였으며, 황충=풀무치 또는 메뚜기류란 주장은 타당성이 낮았다. 조선왕조실록에서 황충 기사 중 출현보고는 173건으로 전체의 66%이고, 출현보고의 47%가 단순보고로서 황충발생의 보고 자체가 매우 중요했음을 의미했다. 황충의 방제대책은 발생보고건수의 20%(34건)로 낮았고, 주로 포획법이나 포제를 올렸으며, 단지 1건의 예방법이 세종대에 기사화 되었다. 황해로 인한 정책수행이나 계획의 변경 논의가 37건 있었는데, 주로 백성의 구휼이나 세금 감면이었고 군사훈련 중지, 축성 중지 등 백성 동원으로 인한 피해를 방지하고자 하였다. 또한 황충피해는 백성뿐 아니라 국왕에게 영향을 미쳐 성종의 경우 10건의 기사에서 황충방제의 스트레스를 언급하였으며, 정종 대에는 선위에 간접적 영향이 있음도 기록을 통해 확인할 수 있었다. We tried to establish the history of outbreaks and control methods of 'hwangchung' in Joseon Dynasty, uncovering the biological reality of the 'hwangchung' (called hwang or bihwang) analyzed through the Database program on 'the Annals of the Joseon Dynasty' and 'the Emollment of Haegoeje', two of the finest examples of classical historical records. The total number of articles on the outbreak of the hwangchung is 261 in the Annals of the Joseon Dynasty and 65 in the Emollment of Haegoeje. There were four peaks by hwangchung throughout the Joseon Era. Among them, the periods of King Taejo to King Sejong had the highest incidence. By comparing the number of records of the hwangchung from the Annals of the Joseon Dynasty with that in the Emollment of Haegoeje during the same period, results show the former was less than the latter, 35 vs 65. However, both records were relatively inconsistent with each other. Insect pests in forests as well as in agriculture were included in the biological identities of the hwangchung in the Joseon Dynasty periods, which is in accordance with those of Saigo's. The taxonomic identity could be confirmed in only 25 cases (9.5%) among the articles on hwangchung. It largely coincided with Paik's opinion: II in armyworm, nine in moth larva, one in rice stem borer, two in migratory locust, one in planthopper and one in rice-plant weevil. Therefore, it is not reasonable to regard hwangchung as a migratory locust or grasshopper only. The number of reports on the occurrence of hwangchung in the Annals of the Joseon Dynasty was 173 (66% of the total) and 47% of them were just simple reports, which means the report itself on the appearance of hwangchung was very significant. The reports on controlling insect pests were of low frequency, in 20% (34 cases) of the total reports, capturing insect pests or holding traditional ceremony called 'Poje'. Among them, only one case related to the treatment of seeds to prevent the damage by hwangchung was published in the King Sejong period. There were 37 discussions about changes and management of government policies due to disasters by hwangchung. They were mostly about relief or tax cut to the people who suffered damage and about cancellation of recruiting people to military training, constructing castles, and so on. It seems that not only the people but also the king was influenced by the hwangchung. In the case of King Seongjong, he referred to the stress of the prevention measure of locusts in 10 articles. The damage also had an effect on abdication in the reign of King Jeongjong.

‘황희 정승 납거미 유언’ 설화 고찰

황인덕 ( In-deok Hwang ) 충남대학교 인문과학연구소 2018 인문학연구 Vol.57 No.1

알려져 있듯 황희는 정승을 지낸 조선 초기 명인의 한 사람이다. 다수일반인들에게 그는 주로 ‘황희 황정승’으로 이름과 직위가 병칭되어 불리어오곤 했는데, 이는 그의 이름이 오래 전에 이미 애칭화되어 후대까지 널리 불려왔다는 뜻이다. 우리나라 역대 정승을 거친 수많은 훌륭한 인물가운데, 그 직위에 요구되는 역할을 가장 충실하게 실현함으로써 그 존재가 거의 ‘정승’의 대명사처럼 기억되어온 결과라 하겠다. 황정승이 조선조전 시대를 대표하는 명 정승으로 알려져온 것에 부합하여, 그에 대하여 구전되어온 설화 또한 그 폭과 깊이가 넓고 깊게 실현되고 있다. 한 인물이 남긴 설화가 대략 주인공이 지닌 인품, 생애, 시대, 업적 등의 조건에 비례한다면, 황정승이 남긴 설화의 다양성도 대략 그러한 조건들이 예사인물과는 다른 결과라고 할 수 있다. 이 글은 위 인물에 대하여 <공작이도 납거미를 먹고 살랴>라는 하나의 유형을 집중적으로 고찰하였다. 주요 내용은 다음과 같다. 첫째, 위 설화의 유형은 크게는 하나, 작게는 세개의 유형으로 나뉘고 있다. 둘째, 위 설화가 형성된 화소의 원천은 ‘고려장 설화’와 ‘공작이도 납거미를 먹고 살랴’라는 전래 속담이며, 이 두 가지 요소가 하필 황정승을 대상 인물로 하여 새로운 설화를 이룬 것은 나말여초 중국과 조선의 국제관계와 그 속에서 황정승이 수행한 역할과 위상이 반영된 결과이다. 셋째, 설화를 통한 인물 형상의 특징은 청렴상을 통한 민담성의 강화에 있으며, 특히 비범한 능력을 발휘하여 청렴을 실천하는 인물상의 구현은 황정승의 투철한 애민정신을 반영한 결과라 할 수 있다. 넷째, 황정승 설화는 여말 선초를 지나 조선 초기 국운 상승기의 인물담을 대표적으로 보여주며, 그로 인하여 설화 속의 인물상이 한결같이 긍정적인 모습으로만 나타난다. As we all know, Hwang Hee was a renowned minister in the early period of Joseon dynasty. The fact that he has been mainly called both by name and position as ‘the minister Hwang’ means he was already given a nickname a long time ago. He has been remembered as a representative of ministers existed in the history as he carried out his duties the most faithfully among the numbers of past outstanding ministers in the country. In accordance with his reputation as a devoted minister throughout the whole dynasty of Joseon, his fictional image was embodied with great wide and depth. If the tales Hwang Hee left behind depended on the conditions such as his personality, his life, the period and his achievement, a variety of his tales would seem to approximately result from those different conditions from those of others. This paper concentrates on his tale < Apeacocklivesonflatspiders > only. The contents are as below. First, the above-mentioned tale might be broadly divided into a type, or into three types in detail. Second, a subject matter of this tale is derived from folk tales about ‘Goryeojang’ and ‘A peacock lives on flat spiders’. A new tale about Hwang Hee which has been invented reflects on the international relationship of Joseon with China, and the role and position he played in the late period of Goryeo dynasty and the early period of Joseon dynasty. Third, a characteristic of the hero in the tale depends on the strengthening his integrity, which displays Hwang Hee’s strong love for the people by showing his exceptional ability to perform for them. Fourth, the tale of Hwang Hee represents a tale of the great man in the history when the country was in the ascendant in the early period of Joseon from the late Goryeo and the early Joseon. Therefore, he was displayed as a positive character in the tales.

기대승(奇大升)의 리기심성론(理氣心性論)과 사칠론(四七論)

황지원(Hwang, Jee Won) 동아인문학회 2017 동아인문학 Vol.38 No.-

사단칠정논쟁은 조선성리학의 특성을 명확하게 드러냄과 동시에 이후의 학술적 흐름을 결정한 일대 사건으로 많은 학자들의 관심을 받았다. 이 논문은 사칠논쟁 자체에 의미를 두기 보다는 기대승의 사칠론이 가지는 연원과 특성, 그리고 그 의미에 대해 분명한 이해를 하는 것을 목표로 한다. 즉 기대승의 사칠론이 어디에 근거하고 있고, 어떤 과정으로 도출되어 나왔으며, 다른 학자들과의 차별적 특성이 무엇인지에 대해 검토해 보려는 것이다. 기대승은 이념적 차원에서는 리기를 분별함이 마땅하지만 현실의 차원에서는 리기가 따로 떨어질 수 없다는 원칙을 철저히 유지함으로써 이황의 성리설과도 다르고 이이의 성리설과도 다른, 하지만 동시에 이황과도 일정 부분 공통성을 지니고, 반대로 이이와도 연결되는 자신만의 독자적 체계를 형성하고 있다. 이것은 리기론과 심성론뿐만 아니라 공부론과 경세관을 비롯한 전체 사유체계와 연결되어 있는 것으로 보인다. 즉 하나의 극단에 치우치지 않고 조화와 균형을 유지하면서 근원적 측면에서 점진적으로 도덕적 이상을 추구하려는 그의 태도가리기를 혼융하여 통일체로 보려는 관점이나, 이와 반대로 엄격히 구분하여 별개의 사물로 보려는 관점 모두를 그대로 수용하기 어렵게 한 것이다. 기대승이 말하는 리의 운동성과 이황의 리의 운동성은 동일한 의미로 이해할 수는 없다. 즉 기대승이 인정하는 것은 분수 이전 태극의 단계에서 리의 동정이며, 분수된 후 현실세계에서 리의 동정, 혹은 ‘발(發)’은 이황이 말하는 ‘발’의 의미와는 다른 것이다. 결국 기대승은리의 운동성을 인정하여 인간의 내면에서 강력한 도덕 근원을 확보하려는 이황의 시도를 어느 정도 수용하면서도 원리적 측면과 현상적 측면이라는 두 가지 기준을 적용함으로써 실제적으로는 유보적 태도를 취하고 있는 것이다. 기대승은 이황과 사칠논쟁을 진행하면서 마지막에는 실천적인 관점에서 이황의 주장을 수용하려고 노력하였으나 근본적인 입장의 차이는 여전히 좁혀지지 않고 있는데, 사실 이러한 차이는 리와 기, 본연지성과 기질지성, 사단과 칠정에 대한 이해의 차이에서 기인한 것이기 보다는 이들 개념이 근거하는 관계의 기본 구조에 대한 입장의 차이에 따른 것이다. 즉 이황은 이 개념들을 대립적 관계로 이해하여 이원적인 구조로 이해했다면 기대승은 통합적 관계로 이해하여 일원적인 구조로 이해하고 있는 것이다. 그러므로 시종일관 두 사람의 논변은 평행선을 달릴 수밖에 없었다고 보아야 한다. 이러한 이해구조의 차이는 ‘대설(對說)’과 ‘인설(因說)’로 표현되기도 한다. Four-Seven debates has attracted the attention of many scholars as it was a major event that clarified characteristics of the Joseon neoconfucianism and determined the subsequent academic flow. The purpose of this paper is to give a clear understanding of the origin, the characteristics, what it means, instead of making a sense of the Four-Seven debates. In other words, it is to examine where Gi Daeseung’s Four-Seven debates theory is based, what process has it derived from, what distiguishes Gi Daeseung’s theory from other scholars. Gi Daeseung forms its own independent system unlike Yi Hwang’s theory and it of Yi Yi, which holds partial commonness with Yi Hwang, which is connected with Yi Yi, by maintaining strictly to the principle that it is necessary to discriminate LiGi in the ideological dimension but LiGi can not fall apart from the level of reality. This seems to be connected not only with LiGi theory and Simseong theory, but also with all reason system including theory of self-cultivation and thought of governance. In other words, his attitude to pursue moral ideals from the fundamental aspect step by step, while maintaining harmony and balance at one extreme, is difficult to accept both viewpoint to point out the entire which is mixed as Li and Gi, on the other hand, and viewpoints which are strictly classified and displayed on different ones. Gi Daeseung’s movement of Li and Yi Hwang’s it can not be understood in the same meaning. In other words, that Gi Daeseung is recognized as dongjing(動靜) of Li at the stage of Tai-JI(太極, Great Ultimate) before fen shu(分殊), and dongjing of Li or “bal(發)” in actual world after fen shu and Yi Hwang’s “bal” is different. After all, Gi Daeseung, by admitting Li"s motility and applying two criteria of principle aspect and phenomenological aspect, while accepting Yi Hwang’s effort to try to secure a strong source of morality from the inside of human beings, is taking a reserved attitude in fact. Gi Daeseung tried to accept Yi Hwang’s argument in the end while advancing Four-Seven debates with him, but the difference in the fundamental position is not narrowed down yet, these differences are not caused by understanding differernce of Li and Gi, Bonyeonjiseong (Original nature) and Kijiljiseong(Physical nature), Four clues and Seven emotion, comes from difference of fundamental system of relation on which these notions is based. In other words, Yi Hwang understands these notions as confrontational relationship and then do as dualistic structure, Ge Daeseung understands them as integrated relationship and then do as a unified structure. Therefore, debates of both Yi Hwang and Gi Daeseung have to run parallel lines. Differences in these understanding structures are sometimes expressed as “Daeseol(對說)” and “Inseol(因說)”.

섬유보강 다공성 옥상녹화 황토콘크리트의 물리·역학적 및 온도변화 특성 평가

오리온,김춘수,김황희,전지홍,권완식,박찬기,Oh, Ri On,Kim, Chun Soo,Kim, Hwang Hee,Jeon, Ji Hong,Kwon, Wan Sig,Park, Chan Gi 한국농공학회 2013 한국농공학회논문집 Vol.55 No.4

The physical, mechanical, water purification and temperature properties of fiber reinforced porous hwang-toh green roof concrete have been evaluated in this study. The effect of the depending on replacement ratio of blast furnace slag to cement was investigated such that the replacement ratio is varied to 0 % and 30 %. Also, the replacement ratios of hwang-toh were 0, 20 and 30 %. The polyvinyl alcohol fiber was used for the reinforcing fiber. A series of pH test, unit weight, void ratio, compressive strength, after purification and variation of temperature test have been performed to evaluate the performance, water purification effect and temperature properties of the fiber reinforced porous hwang-toh green roof concrete. The test results indicate that the physical and mechanical properties of fiber reinforced porous hwang-toh green roof concrete is affected by the replacement ratio of the blast furnace slag and hwang-toh contents. Results of purifying water showed that the water purification effect of porous hwang-toh green roof concrete is about 40 %. Also, the temperature properties test results indicate the green roof blocks using fiber reinforced porous hwang-toh green roof concrete have insulation and temperature reduction effect.

황구침법(黃丘鍼法)을 이용한 고혈압 환자의 혈압강하 효과에 대한 증례보고

한창현 ( Chang Hyun Han ),황치원 ( Chi Won Hwang ),신미숙 ( Min Suk Shin ),신선화 ( Seon Hwa Shin ),최선미 ( Sun Mi Choi ) 대한경락경혈학회 2006 Korean Journal of Acupuncture Vol.23 No.3

Objectives: The aim of the study was to investigate the antihypertensive effect of Hwang-gu Acupuncture in hypertensive patients. Methods: We measured the blood pressure of the patients who were admitted in the Oriental Medical Clinic of Brother from 25th November 2005 to 27th March 2006. We included the patients only in case of the systolic blood pressure was over 140mmHg or diastolic blood pressure was over 90mmHg, Twenty two patients were treated by Hwang-gu Acupuncture. In order to evaluate the effect of the Hwang-gu Acupuncture, the blood pressure was measured before and after Acupuncture procedure total 4 times, 10times. Results: There were a significant decrease in the systolic blood pressure and significant decrease in the diastolic blood pressure by Hwang-gu Acupuncture 4 times. The effect of Hwang-gu Acupuncture by measurement time on blood pressure were follows: In a systolic blood pressure was gradually deceased significantly from 1st to 4th but diastolic blood pressure was significantly decreased after 2nd and 4th only. Conclusions: These results suggest that Hwang-gu Acupuncture is effective in decreasing the systolic and diastolic blood pressure.

Mechanical Properties of Hwangtoh-Based Alkali-Activated Concrete

Yang, Keun-Hyeok,Hwang, Hey-Zoo,Lee, Seol Architectural Institute of Korea 2009 Architectural research Vol.11 No.1

This study presents the testing of 15 hwangtoh-based cementless concrete mixes to explore the significance and limitations of the development of eco-friendly concrete without carbon dioxide emissions while maintaining various beneficial effects. Hwangtoh, which is a kind of kaolin, was incorporated with inorganic materials, such as calcium hydroxide, to produce a cement-less binder. The main variables investigated were the water-to-binder ratio and fine aggregate-to-total aggregate ratio to ascertain the reliable mixing design of hwangtoh-based cementless concrete. The variation of slump with elapsed time was recorded in fresh concrete specimens. Mechanical properties of hardened concrete were also measured: including compressive strength gain, splitting tensile strength, moduli of rupture and elasticity, stress-strain relationship, and bond resistance. In addition, mechanical properties of hwangtoh-based cement-less concrete were compared with those of ordinary portland cement (OPC) concrete and predictions obtained from the design equations specified in ACI 318-05 and CEB-FIP for OPC concrete, wherever possible. Test results show that the mechanical properties of hwangtoh-based concrete were significantly influenced by the water-to-binder ratio and to less extend by fine aggregate-to-total aggregate ratio. The moduli of rupture and elasticity of hwangtoh-based concrete were generally lower than those of OPC concrete. In addition, the stress-strain and bond stress-slip relationships measured from hwangtoh-based concrete showed little agreement with the design model specified in CEB-FIP. However, the measured moduli of rupture and elasticity, and bond strength were higher than those given in ACI 318-05 and CEB-FIP. Overall, the test results suggest that the hwangtoh-based concrete shows highly effective performance and great potential as an environmental-friendly building material.

황토골재를 사용한 콘크리트의 제특성에 관한 실험적 연구

황준필(Hwang, Jun Pil),김기범(Kim, Ki Beom),안기용(Ann, Ki Yong) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.2

For the characteristics of the concrete using Hwang-Toh aggregate, thermal Insulation capacity test, absorption capacity of heavy metals several test were performed. The study found that the Hwang-Toh concrete could improved the characteristics of conventional normal concrete. The Hwang-Toh concrete shows 67.7% lower thermal conductivity than normal concrete, so it shows good thermal insulation capacity. And the leaching test results showed that 96% of heavy metals such as Pb, Zn, Mn were absorbed by the Hwang-Toh concrete.

장려품종 콩을 이용한 메주 및 된장 품질 특성

이가순,이주찬,이종국,황의선,오만진,이승수 한국식품저장유통학회(구 한국농산물저장유통학회) 2002 한국식품저장유통학회지 Vol.9 No.2

국산 콩 재배를 장려하고 메주 및 된장가공용으로 적합한 우수 콩품종을 선발하고자 충남도내에서 주로 재배되고 있는 대원, 소담, 진품 및 황금 콩을 이용하여 메주 및 된장을 제조한 후 품종간 품질의 특성을 조사하였다. 원료 콩들의 일반성분 중 조지방은 16.89∼19.31%, 조단백질은 26.7∼30.5%,이었고 품종별 총 유리당함량은 4.99∼5.26%로 주된 유리당은 stachyose으로서 2.59∼3.51%를 함유하고 있었고 그 다음은 raffinose와 sucrose순이었다. 메주의 조지방은 16.2∼21.0%로 황금콩이, 조단백질은 32.2∼36.4%로 대원과 소담콩이, 가용성무질소물은 23.5∼26.62%로 진품콩이 각각 함량이 높았으며 아미노태 질소함량은 266∼ 371 ㎎%로 대원콩이 가장 높았다. 메주의 총 유리당은 2.10∼2.66%로 주된 유리당은 glucose이었으며 대원콩이 유리당함량이 높았다. 메주덩어리의 색도를 본 결과 황금콩이 밝기가 가장 감소하였으며 적색도는 대원콩과 황금콩이 높았고 황색도는 소담콩이 가장 높게 나타났다. 또 메주를 분쇄하여 메주분으로 조사한 결과 소담콩이 밝기값이 가장 높았고 적색도가 가장 낮았으며 황색도는 황금콩이 가장 높았다. 발효된장의 조지방은 7.90∼9.71%로 진품콩이, 조단백은 9.67∼13.50%로 대원콩이, formol태 질소함량은 2739∼3825㎎%로 소담콩이, 조사포닌 함량은 6.88∼8.36%로 대원콩이 각각 함량이 가장 높았으며 총유리당 함량은 1.88∼2.22%으로 황금콩이 가장 높았으며 된장의 주된 유리당은 fructose와 glucose이었다. 된장제품의 색도 중 밝기와 황색도는 소담콩이 가장 높았으며 적색도는 황금콩이 가장 높았다. 된장제품의 관능검사결과 소담콩이 색깔면에서는 우수하였으나 맛, 질감 및 전반적인 기호도를 볼 때 황금콩이 가장 좋은 것으로 평가되었다. In order to selection of the suitable soybean varieties, the quality characteristics of meju and doenjang on 4 domestic soybean cultivars(Daeweon, Sodam, Jinpeum and Hwangkeum) were evaluated. Crude protein and lipid content was 26.7∼30.5% and 16.89∼19.31%. The content of total free sugar among 4 soybean cultivars were 4.99∼5.26% and composed mainly stachyose(2.59∼3.51%), raffinose and sucrose. The content of total free sugar of meju were the highest in Jinpeum among 2.10∼2.66% and composed mainly glucose. The lightness of meju lump in Hwangkeum was larger decrease than the others, the redness were higher in Daeweon and Hwangkeum, the yellowness was the highest in Sodam. The lightness of meju powder was the highest in Sodam, the redness was the lowest in Sodam, the yellowness was the highest in Hwangkeum. The chemical composition of doenjang were that : was the highest in Jinpeum among the 7.90∼9.71% crude lipid, in Daeweon among 9.67∼13.50% crude protein, in Sodam among 2739∼3825 ㎎% Fromol nitrogen and in Daeweon among 6.88∼8.36% crude saponin, respectively. The content of total free sugar of doenjang were the highest in Hwangkeum among 1.88∼2.22% and composed mainly fructose and glucose. The lightness and yellowness of doenjang was the highest in Sodam, the redness was the highest in Hwangkeum. Doenjang by Hwangkeum had good score for taste, texture and overall quality in sensory evaluation.

The Long-term Effects of Awareness on the L2 Acquisition of the English Passive

Jong-Bai Hwang,Haengku Kang,Moon-Sub Han 한국외국어교육학회 2008 Foreign languages education Vol.15 No.3

This study is a follow-up of Hwang's (2007) empirical study, which investigated the role of awareness in Korean high school students' subsequent learning of the English passive. Hwang (2007) found the positive relationship between awareness and subsequent processing of the target structure and claimed the crucial role of awareness in successful second language learning. The present study explores whether the effects of awareness retain six months after the first post-exposure task of Hwang (2007), which was performed one day after the instruction. The results of the present study revealed the retention of the effects of awareness in the written production task as well as in the multiple-choice recognition task. However, no significant differences were found between the passive group, who were consciously aware of the target structure through a reading text and brief explanation about the English passive, and the preposition group whose attention could be implicitly drawn to the target structure through the reading text only. The results cannot fully support Schmidt's noticing hypothesis and can also be interpreted as providing evidence for the dissociation claim that L2 learning can take place implicitly without conscious awareness.

에너지/환경 : 천연섬유질을 심재로 사용한 친환경 복합단열재의 물성

황의환 ( Eui Hwan Hwang ),조성준 ( Soung Jun Cho ),김진만 ( Jin Man Kim ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.1

친환경 복합단열재를 개발하기 위하여 천연섬유질(목재칩 및 톱밥)을 심재로, 활성황토를 결합재로 사용하였다. 물/결합재비 및 천연섬유질/결합재비를 다양하게 변화시켜 공시체를 제작하였으며, 공시체의 제 물성을 조사하기 위하여 압축 및 휨강도, 흡수성, 내열수성, 열전도도, 세공분포측정 및 SEM에 의한 미세조직 관찰을 실시하였다. 그 결과 흡수율은 천연섬유질/결합재비가 증가될수록 증가되었으나 폴리머/결합재비 증가에 따라 현저히 감소되었다. 압축 및 휨 강도는 물/결합재비 및 천연섬유질/결합재비에 따라 다양한 특성을 나타내었다. 천연섬유질/결합재비 및 폴리머/결합재 비가 증가됨에 따라 열전도도는 감소되었다. SEM조사에서 활성황토 결합재는 수화결정체가 잘 형성되어 치밀한 조직을 관찰할 수 있었고, 활성황토를 결합재로 사용한 시편의 총세공량은 생황토를 결합재로 사용한 시편의 총세공량에 비하여 적게 나타났다. For the development of the environment-friendly insulating composite materials, natural cellulose (wood chip and sawdust) was used as a core material and activated Hwangtoh was used as a binder. Various specimens were prepared with the water/binder ratio and natural cellulose/binder ratio. The physical properties of these specimens were then investigated through compressive and flexural strength test, absorption test, hot water resistance test, thermal conductivity, measurement of pore distribution and observation of micro-structures using scanning electron microscope (SEM). Results showed that the absorption ratio increased with the increase of natural cellulose/binder ratio but decreased remarkably with the increase of polymer/binder ratio. The compressive and flexural strength development varied appreciably with the increase of water/binder ratio and natural cellulose/binder ratio. On the other hand, thermal conductivity decreased with the increase of natural cellulose/binder ratio and polymer/binder ratio. Through SEM, it was found that activated Hwangtoh that reacted with water formed a hydrate crystal leading to the compact structure and the total pore volume of the specimen using activated Hwangtoh was smaller than that of the non-activated Hwangtoh.