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机构地区:[1]中国林科院林产化学工业研究所 [2]不详
出 处:《林产工业》2014年第3期13-16,23,共5页China Forest Products Industry
基 金:农业科技成果转化资金项目(2012GB24320579)
摘 要:推广E0级地板用MUF胶过程中,进行补充试验发现:用NH4Cl(0.5%~ 1.0%)和H3PO4(0.3%~0.5%)复合固化剂的MUF胶压制的胶合板甲醛释放量比用单一NH4Cl(0.8%~1.0%)或单一H3PO4(0.5%)为固化剂的MUF胶低,均符合E0级;采用复合固化剂的MUF胶涂胶预压后,陈放1~24h均可生产胶合强度符合要求的E0级胶合板;用F/U m.r.1.40,F/(U+M)m.r.1.11、M/MUF 14.2%的MUF胶生产的实木地板基材胶合板3d送检甲醛释放量0.3mg/L,11d送检甲醛释放量0.1mg/L,胶合强度、浸渍剥离合格.When the production technique of MUF resin for E0 degree board was transferred,the additional test revealed that the formaldehyde emission of plywood bonded with the MUF resin using NH4Cl (0.5%~1.0%)and H3PO4 (0.3%~0.5%) as composite curing agent was less than the formaldehyde emission of plywood bonded with the MUF resin using single NH4Cl (0.8%~1.0%) or single H3PO4 (0.5%) as curing agent.After glued by the composite curing agent and prepressed,laid for 1~24h,the bond strength of the plywood could meet the requirement of type Ⅱ plywood (〉0.7MPa).The formaldehyde emission of plywood bonded with the MUF resin with 14.2% melamine (base on MUF resin) and F/(U+M) molar ratio being 1.11(F/U molar ratio 1.40) was 0.3mg/L after 3 days and 0.1mg/L after 11 days,and the bond strength and soaking peel could meet the requirement of flooring board.
关 键 词:胶合板 E0级地板 三聚氰胺改性脲醛树脂 低甲醛释放量
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