2009•Beijing Linye Daxue xuebaoRequires access
Hot-pressing techniques of plywood manufacture with modified soybean protein adhesives.
Sang Zi-ta
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Abstract
Using an orthogonal method,this study investigated the bonding strength of plywood made by modified soybean protein adhesives under different experimental conditions such as hot-pressing temperature,time,pressure,and amount of adhesives.The results indicated that the bonding strength of plywood increased significantly when hot-pressing temperature increased from 130 to 160℃,or when hot-pressing time increased from 30 to 60?s?mm,or when hot-pressing pressure rose from 0.6 to 1.0?MPa.After 1.0?MPa,the rising tendency of the bonding strength slowed down.The plywood achieved a maximum bonding strength at the amount of adhesives of 310?g?m~2.The optimum technological parameters are suggested as follows: hot-pressing temperature 160℃,hot-pressing pressure 1.2?MPa,hot-pressing time 60?s?mm,and amount of adhesives 310?g?m~2.