植物蛋白胶细木工板加工技术的研究

笔者使用的植物蛋白胶是以富含蛋白质的生物质为主要原料制备的无甲醛释放的胶粘剂。由于其初粘性不如"三醛胶"大,因此不能利用传统细木工板的生产工艺。针对该胶粘剂的特点,通过研究新的施胶工艺,确定木材含水率8%～12%,第1次预压15 min,热压第一阶段最佳工艺参数:施胶量170 g/m2,热压时间8 min,压力17 MPa,温度105℃;第2次预压15 min,热压第二阶段最佳工艺参数:施胶量155 g/m2,热压时间4 min,施胶量155 g/m2,温度100℃,压力15 MPa,板材外观能达到优等品标准,理化性能符合GB/T5849-2006的要求。

Study on the processing technology for a kind of plant protein adhesive of blockboard

The plant protein adhesive is made of biomass materials that are rich in protein,which doesn't contain formaldehyde.As a result of its viscosity is not as formaldehyde-type adhesive,the traditional plastering glue process isn't adjusted in blockboard processing.In view of this,we study on new plastering glue process,and then choose the rang of 8%~12% moisture content of wood,the best parameters of first stage for preload 15min,hot-pressing process of glue consumption 170 g/m2,hot-pressing 17MPa,temperature 105 ℃,time 8 min.The best parameters of second stage for preload 15min,hot-pressing process of glue consumption 155 g/m2,hot-pressing 15MPa,temperature 100 ℃,time 4 min.The outward appearance of blockboard could achieve superior standard,physical and chemical properties conform the require of the standard GB/T 5849-2006.