添加阻燃剂对三层实木复合地板生产工艺的影响

摘要

The effect of fire retardants on manufacturing technique was discussed by taking the three layers solid wood reu-niting floor as the subject.The result showed that weight gain rate of veneer increased along with the prolonging of the im-pregnation time when the cross-band veneer and back layer dipped the fire retardants.The increase of weight gain rate was not evident when the impregnation time surpassed 30 minutes.The oxygen index increased along with the increase of adding fire retardants.Nevertheless, the moisture content and static bending intensity was opposite with oxygen index.The mois-ture content, static bending intensity, formaldehyde emission and oxygen index increased along with the glue-spread.The effect of hot pressing temperature and time on moisture content, static bending intensity, formaldehyde emission amount and oxygen index was not obvious.The best hot-pressing technology was fire retardants amount 8%, glue-spread 360g· m-2 , hot pressing temperature 120℃and hot pressing time 12min.%以三层实木复合地板为对象，探讨阻燃剂对其生产工艺的影响，结果表明：芯板、背板浸渍阻燃剂时，单板的增重率随着浸渍时间的延长而增加，当浸渍时间超过30 min后，增重率增加不明显；随着阻燃剂施加量增加氧指数增大，含水率、静曲强度随着施加量增加而降低；含水率、静曲强度、甲醛释放量和氧指数随着涂胶量的增加而增大；热压温度和热压时间对含水率、静曲强度、甲醛释放量和氧指数影响不明显。最佳热压工艺条件为：阻燃剂施加量8％，涂胶量360g· m－2，热压温度120℃，热压时间12 min。