Abstract
가연성 물질의 다양한 연소 특성 때문에 이들 물질의 안전한 사용, 취급 및 운송을 위해서는 정확한 물질 안전정보가 필수적이다. 인화점, 연소점, 폭발한계 및 최소자연발화온도(AIT)는 위험한 물질을 취급하는 화학산업과 실험실 등에서 특별한 관심을 필요로 하는 중요한 안전 매개변수이다. 본 연구에서는 화학산업에 중간제로 널리 사용되고 있는 tert-butylbenzene을 선정하였다. tert-Butylbenzene 연소특성치의 신뢰도를 고찰하기 위해서 인화점, 연소점, 최소발화온도를 측정하였고, 폭발한계는 측정된 인화점을 이용하여 계산하였다. Setaflash와 Pensky-Martens 밀폐식 장치에 의한 tert-butylbenzene의 하부인화점은 39 ℃와 44 ℃로 측정되었으며, Tag와 Cleveland 개방식에서는 51 ℃와54 ℃로 측정되었다. 그리고 Tag와 Cleveland에 의한 연소점은 54 ℃와 58 ℃로 측정되었다. ASTM E659 장치를 사용하여 tert-butylbenzene의 자연발화온도와 발화지연시간을 측정하였고, 그 결과 tert-butylbenzene의 최소자연발화온도(AIT)는 450 ℃로 측정되었다. 또한 Setaflash에 의해 측정된 하부인화점 39 ℃를 이용한 결과 폭발하한계는 0.68 vol%로 계산되었다.Because of the vertical combustion characteristics of combustible substances, accurate substance safety information for theirsafe use, handling and transportation is essential. The flash point, fire point, explosion limits and autoignition temperature(AIT) are important safety parameters which need special attention in chemical plants and laboratories that handle dangerousmaterials. In this study, tert-butylbenzene which is widely used as an intermediate material in the chemical industry wasselected. For the reliability of the flammable properties of tert-butylbenzene, this study was investigated the explosion limitsof tert-butylbenzene in the reference data. The flash points, fire points and AITs by the ignition delay time fortert-butylbenzene were experimented. The lower flash points of tert-butylbenzene by using the Setaflash and Pensky-Martensclosed-cup testers measured 39 ℃ and 44 ℃, respectively. The flash points of tert-butylbenzene by using the Tag andCleveland open cup testers are measured 51 ℃and 54 ℃. And the fire points of tert-butylbenzene by the Tag and Clevelandopen cup testers were 54 ℃ and 58 ℃ respectively. The AIT of tert-butylbenzene measured by the ASTM 659E tester wasmeasured as 450 ℃. The lower explosion limit of 39 ℃ which measured by the Setaflash flash point tester was calculatedto be 0.68 vol%.
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