湿度对胶合板中甲醛释放的影响

王小恒; 刘兴荣; 吴汉奇; 裴文艳

湿度对胶合板中甲醛释放的影响

Effect of humidity on emission of formaldehyde from phywood

摘要

摘要:
目的探讨湿度对胶合板中甲醛释放的影响规律。
方法采用0.25m³模拟舱, 在温度为(23±0.1)℃, 通风速率为1.0L/min, 装载度为(1±0.03)m²/m³的舱环境中, 对不同湿度条件下胶合板中甲醛释放情况进行观察。
结果不同湿度条件下舱内甲醛浓度随时间变化均符合对数曲线关系, 当相对湿度超过50%以上时, 舱甲醛浓度增高幅度明显加大.不同湿度条件下舱稳定浓度变化符合一阶指数曲线关系。
结论湿度对胶合板中甲醛释放影响显著, 湿度升高甲醛释放增加, 且符合一阶指数曲线关系, 在高湿环境下, 胶合板中甲醛释放量显著增高。

Abstract:
Objective To study the effect of humidity on emission of formaldehyde from plywood.
Methods A 0.25m³ simulation chamber was used to explore the emission of formaldehyde from plywood under different conditions of humidity.The temperature of simulation chamber was kept at(23±0.1)℃, the velocity of ventilation at 1.0L/min, the loading factor at(1±0.03)m²/m³.
Results The concentration of formaldehyde in chamber varied with time at different humidities matching the hyperbolic logarithm relation.The concentration of formaldehyde in chamber raised remarkably when the humidity exceeded 50% above.The stabilization concentration of formaldehy de in chamber varied with humidity matching the index exponent relation.
Conclusion The humidity had an great effect on emission of formaldehyde from plywood.The emission of formaldehyde increased with the increase in humidity.Further more, an index exponent relation between the humidity and the formaldehyde emission was observed.Especially, the emission of formaldehyde from plywood raised dramatically in the case of higher humidity.

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