• 한국화재소방학회논문지
• /
• 제20권4호
• /
• pp.26-32
• /
• 2006

국내에서는 현재 샌드위치패널의 화재성능 평가를 위하여 KS F 2271(건축물의 내장재료 및 구조의 난연성 시험방법)을 사용하고 있다. 그 중 연기 및 연소독성가스에 대한 시험인 가스유해성 시험은, 건축 재료 및 내장재의 연소시 발생하는 가스의 유해성을 마우스의 평균 행동정지시간으로 측정하는 방법으로, 정량적인 방법이 아니므로 마우스의 상태나 시험조건에 따라 시험결과가 달라질 수 있다. ISO 5659-2 연소챔버 시험방법은 광학밀도를 정량적으로 측정할 수 있으며, FTIR을 이용한 유독가스 분석이 가능하다. 본 연구에서는 ISO 5659-2 연소챔버 시험방법을 사용하여, 국내에서 일반적으로 사용되는 4종의 샌드위치패널 단열재의 광학밀도를 측정하여 각 시험체와 비교하였다. 또한, 시험체마다 3번의 시험 중 두 번째 시험시 FTIR 분석을 수행하여 HCl, $NO_2$ 등의 정량적 결과를 비교하였다.

• 공업화학
• /
• 제34권4호
• /
• pp.421-425
• /
• 2023

Polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), 그리고 polyacetal을 포함하는 일부 플라스틱류에 대한 연기특성을 조사하였다. 연기밀도는 ISO 5659-2의 기준에 의해 연기밀도시험기를 이용하여 정적인 연기 특성의 관련 값을 측정하였다. 또한 불꽃을 동반하는 연소와 불꽃을 동반하지 않는 연소를 구분하여 측정하였다. 불꽃방식의 복사열 50 kW/m² 의 조건하에서 연기의 최대비광학밀도(D_m) 측정값은 PMMA (401.26)가 최저로, PVC (1345.04)가 최대로 나타났다. 또한 비불꽃방식의 복사열 50 kW/m² 의 조건하에서 연기의 D_m 측정값은 PMMA (262.82) 가 최저로, PVC (1385.43)가 최대로 나타났다. 대상물의 연소 시 연기발생은 복사열 유속의 영향을 상당히 받으며, 탄화성 플라스틱은 연소 시 비탄화성 플라스틱보다 높은 연기 발생량을 나타내었다. 주 고분자 사슬에 방향족 그룹이 있는 폴리머는 열분해로 인해 다량의 숯이 생성되므로 다량의 연기를 발생시켰다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2004년도 춘계학술대회 논문집
• /
• pp.339-345
• /
• 2004

In this study we reported the Smoke Density values of interior materials of railroad passenger car and investigated the specific smoke density(Ds) by NBS smoke chamber to the variance of some test conditions. First we compared the result of Ds from ISO 5659-2 with that from ASTM E 662 for same material. Secondary studied the Ds value to the variance of specimen shape and thickness and to the variance of other conditions.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2002년도 춘계학술대회 논문집
• /
• pp.567-571
• /
• 2002

In this study we reported the Smoke Density test method of interior panel of railroad passenger car and investigated the specific smoke density(Ds) by NBS smoke chamber to the variance of some test conditions. First we compared the result of Ds from ISO 5659-2 with that from ASTM E662 for same phenol FRP Secondary studied the Ds value to the variance of resin type and to the variance of specimen shape.

• Architectural research
• /
• 제21권2호
• /
• pp.41-48
• /
• 2019

The purpose of this study is to research and development of 'Korea B(Benefit)-impact Model' for Sustainable Development. A concept evaluation model is 'B(Benefit)-impact model' in U.S.A. We use the results of surveys that examined the importance of social value issues to stakeholders in Korea to implement the benefit-impact model in Korea. In particular, in this paper, we use the KSI(Korean Sustainability Index) survey data conducted by the Korea Standards Association to evaluate the social value of the construction industry for representative stakeholders in the construction industry. The social value pool and the activity indicator pool used for the survey are created based on relevant International Standards; ISO 26000, ISO 14001, ISO 37001. As a result, Korea B-impact model for construction industry included the following five core social value issues; Strengthen transparency of corporate management, Ensure fair employment and employment relations, Efforts to prevent corruption, Conduct fair competition, Efforts to prevent environmental pollution. In addition, the US B-impact model has three limitations. First, it is unclear whether the key indicators have been derived while considering all issues of social value. Second, US B-impact model indicators are developed by the social responsibility experts, so it is necessary to review by stakeholders in each industry. Finally, it would be more effective for companies to use the B-impact model index as a more detailed activity indicator. When developing a Korea B-impact model, the following methods are used to supplement it. First, we reviewed all social value issues using international standards. Secondly, we used the KSI(Korean Sustainability index) survey results to derive the importance of the social value issue of construction industry in Korea. Finally, we have clearly matched the activity indicators by social value core issues based on the GRI Standard so that companies can actually use the Korea B-impact model for the construction sector. The detailed development stages and results of this study are as follows;.

• 대한한의학회지
• /
• 제33권1호
• /
• pp.42-51
• /
• 2012

Objectives: We measured the density of smoke and harmful gases emitted from burning adhesive indirect moxa. Through the test we aimed to find out if there was an excessive amount of smoke emitted and if it included harmful gases. Methods: 9 types of adhesive indirect moxa were chosen. The buffer layers which do not burn during treatment were removed and 10g of each moxa were made into powder and put into a holder. A smoke density chamber (Smoke Density Chamber FTT. U.K) and Fourier transform infrared spectroscopy (FT-IR I 4001. MIDAC U.S.A.) were used to measure the density of smoke and harmful gases emitted from burning moxa by ISO 5659-2 test. Results: The result of measuring maximum smoke density showed that the regular indirect adhesive moxa (A-F) emitted high density smoke of 172.1-291.4Ds. The smokeless moxas, Seoam moxas, emitted the least amount of 3.4-5.5Ds. Concentrations of 7 typical harmful gases (CO, HCl, HCN, HBr, HF, SO2, NOx) were measured and all of the moxas emitted CO due to incomplete combustion. 4 types of moxa emitted NOx and all smokless moxas emitted NOx. HBr, HCN, HCl, HF, SO2 were not found in any of the moxas. Conclusions: The amount of harmful gases emitted from burning moxa was much lower than short-term exposure standards of chemical and physical factors (Ministry of Labor 2010-44). Further experiments measuring gases from moxa combustion should be done in larger environments similar to normal medical clinics.