木材用常温固化热解油淀粉胶粘剂制备工艺研究

Preparation of cold setting bio-oil-starch based adhesive for wood

以生物质热解油、木薯淀粉为主要原料,制备木材用常温固化热解油淀粉胶粘剂(CSBOS)。以热解油加入后反应p H、热解油质量分数及热解油与淀粉乳液反应时间等3个关键参数为实验因素,以压缩剪切强度为考核指标进行正交试验,得到CSBOS胶粘剂优化制备工艺:p H为4.5,热解油质量分数为25%,反应时间为35 min。研究表明,热解油加入后反应体系p H对压缩剪切强度影响最为显著,制备的热解油淀粉胶粘剂物质分布均匀,具有良好的贮藏稳定性和储存期,压缩剪切强度达到HG/T 2727—1995标准中Ⅱ类胶粘剂的要求。

The cold setting bio-oil-starch-based adhesive（ CSBOS） for wood is prepared with the bio-oil and corn starch as raw materials. With compressing shear strength of CSBOS as evaluation indicator,the effects of pH,the amount of bio-oil and reaction time are investigated by orthogonal experiment. The optimal parameters for preparation of CSBOS are： 4. 5 of pH value,25% mass fraction of bio-oil and 35 min of reaction time. Moreover,pH has a great impact on the compressing shear strength of CSBOS. Under the optimal conditions,the resultant CSBOS has a uniformly distributed ingredients,good storage stability and storage life. The compressing shear strength of adhesives can reach index requirement of Ⅱtype adhesive in HG / T 2727—1995 standard.