Effect of Test Methods on the Determination of Formaldehyde Emission from Plywood

Effect of Test Methods on the Determination of Formaldehyde Emission from Plywood

The formaldehyde release of poplar plywood was tested with the closed sample, sampling position and water content as the influencing factors. The regularity and main ways of formaldehyde release from plywood were discussed. The results showed that 1 formaldehyde released from plywood was mainly concentrated on the edge of the edge, which was related to the area of the edge surface. The effect of the surface sealing on the release of formaldehyde was not significant. 2 The sampling position had no significant effect on the formaldehyde emission value. The formaldehyde emission of the specimen at the edge and center of the sheet is larger, and the other parts are not much different. 3 The moisture content of the plywood has a significant effect on the formaldehyde emission. When the moisture content is low, the moisture content of the specimen increases. Increased release.

测试方法对胶合板甲醛释放量测定结果的影响

以试件封闭情况、取样位置、含水率为影响因子,对杨木胶合板的甲醛释放量进行了检测,探讨胶合板释放甲醛的规律和主要途径。结果表明,①胶合板释放甲醛主要集中在边部端面,与边部端面面积有关,表面封闭与否对其释放甲醛的影响不大;②取样位置对甲醛释放检测值的影响不显着.板材边缘和中心位置的试件的甲醛释放量较大,其余部位相差不大;③胶合板含水率对甲醛释放量的影响显着,在含水率较低时,随着含水率的增加试件甲醛释放量增大。

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