湿度对细木工板中甲醛释放的影响

Effect of humidity on emission of formaldehyde from blockboard

目的探讨湿度对细木工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,对不同湿度条件下细木工板中甲醛释放情况进行了探讨。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60%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:^Y=1.34+0.23 e3.30x(R2=0.99)。结论湿度对细木工板中甲醛释放具有显著影响。

Objective To study the effect of humidity on emission of fomlaldehyde from blockhoard. Methods A 0.25m3 of simulation chamber was used to explore the emission of formaldehyde from bloekboard under different conditions of humidity. The temperatures of simulation chamber were kept at the degrees of 23±0.1, the velocity of ventilation of 1.0 L/min, the loading factor of （1 ± 0.03）m2/m3 . Results The chamber concentrations of formaldehyde varied with times at the conditions of different humidities matched the hyperbolic logarithm relation. The chamber concentration of formaldehyde raised remarkably when the humidity were more than 60% . The chamber stabilization concentrations of formaldehyde varied with humidity matched the index exponent relation. Equation of curve was ^Y=1.34＋0.23 e3.30x（R2=0.99）（R2 = 0.99）. Conclusion The humidity could have an great effect on emission of formaldehyde from bloekboard.