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木模材是需要量大的特种工业用材,具有严格的特殊要求.采用 PC 树脂充胀浸渍处理马尾松材,可代替传统木模材做二、三级木模使用,成本仅及现有木模材的百分之四十左右,经试验测定,这种处理过的马尾松材.在常温水中浸泡,体积膨胀率由3.93%降为0.2%,降低了18.7倍.吸水率由33%降为3.3%,降低了9倍,变形率为1000毫米内0.3—0.5毫米,大大提高了尺寸的稳定性,在充胀浸渍的同时完成了干燥作业,终含水率达3—5%,方材厚度上的分层含水率平均为0.26%,内应力平均为1.2%,达到了 GB6491—86《锯材干燥质量》国家一级标准。同时由于树脂的填充,使材质变得均匀、紧密,改善了加工性能,提高了表面光洁度,满足了木模材的技术要求.这一试验成功使马尾松材由低劣材种变为特种工业用材,从而提高了马尾松材的经济使用价值.缓解了木模材长期供应困难的局面,降低了木模生产成本,具有一定的社会经济效益.
Wood is the need for large amount of special industrial timber, with strict special requirements. The use of PC resin infiltration impregnation treatment Masson pine wood, timber can be used instead of traditional wood to do two or three levels, the cost of only existing wood About 40 percent of the mold material is tested by the test, and the treated Masson pine material is immersed in water at room temperature, the volume expansion rate is reduced from 3.93% to 0.2%, a decrease of 18.7 times, and the water absorption rate is reduced from 33% Is 3.3%, a decrease of 9 times, the deformation rate of 0.3-0.5 mm within 1000 mm, greatly improving the dimensional stability, completing the drying operation while inflating and impregnating, and finally the water content reaches 3-5% The stratified moisture content of the average thickness of 0.26%, the internal stress average of 1.2%, reached the GB6491-86 “lumber drying quality” a national standard. At the same time as the resin filling, so that the material becomes uniform, close, improved processing performance and improve the surface finish, to meet the technical requirements of wood molds.The success of this test to make the masson pine material from poor wood into a special industrial timber , Thus improving the economical use value of Masson pine material, alleviating the long-term supply difficulties of wood mold, reducing the production cost of wood mold, and having certain social and economic benefits.