Bakelite samples were sealed in Tedlar gas sampling bag for 30 days under different temperature. The concentration of the released methanol was determined continuously with gas chromatography-mass spectrometry. Curve fitting and regression were used in data analysis. The results showed that under 40 °C, the releasing amount increased first and then; under 50 °C and 65 °C, the releasing amount decreased with time. It was concluded that the regularity of contamination generated by nonmetallic materials was affected by the concentration of the substance and production model of the material. The purpose of this research was to provide reference for contamination control of close environment, such as spacecraft, plane, and submarine.%为了预防和控制航天器、飞机、潜艇等密闭环境中挥发性有机物的污染,将有机硅改性酚醛塑料作为实验样品密封于Tedlar气体采样袋中,在不同的温度下试验,应用气相色谱-质谱联用仪在30 d的时间内对释放的甲醇进行连续测试,并进行曲线拟合回归.结果表明,40C时,甲醇释放量随试验时间的延长呈先增加后减少的趋势；50℃和65℃时,释放量随试验时间的延长逐渐减少.挥发性有机物释放曲线的规律性与其生产方式及其在材料中的含量有密切的关系,密闭环境中非金属材料挥发性有机物释放有一定的规律,其中甲醇的释放规律存在等效原则.
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