异氰酸酯胶在刨花板中的应用  

Application of Isocyanate in Particleboard Production

作　　者：陆仁书[1] 濮安彬[1] 张显权[1] 艾军[1] 

机构地区：[1]东北林业大学

出　　处：《林产工业》1997年第4期22-25,共4页China Forest Products Industry

摘　　要：异氰酸酯胶作为刨花板胶粘剂，具有刨花含水率适应范围广（０～２５％），施胶量低、无游离甲醛释放、适合制造轻质刨花板等优点。施胶量为５％、密度为０．４５ｇ／ｃｍ３和０．６１ｇ／ｃｍ￣３的二苯基甲烷二异氰酸酯（ＭＤＩ）小黑杨刨花板的物理力学性能分别达到Ａ类刨花板二等品和优等品的指标要求。密度为０．６５ｇ／ｃｍ￣３时，只要ＭＤＩ施胶量达到３％，刨花板的物理力学性能指标能达到Ａ类刨花板的国家标准要求。试验还表明：ＭＤＩ具有较好的耐水性，但耐湿热性和长期耐水性不如酚醛胶。生产１ｍ￣３刨花板ＭＤＩ与ＰＦ和ＵＦ胶粘剂成本比为２．０５：１．７８：１．００。As a resin for particleboard, isocyanate has many advantages, such as low resin consumption and no free formaldehyde and wide range of particle' s moisture content ( 0 ～25% ) , it is suitable to be used for manufacturing light particleboard. The mechanical properties of diphenymethane diisocyanate ( MDI) populus particleboard reached the levels of the second - class or the high - class of A type particleboard standard of China GB /T 4879 - 92 when the density of the particleboard was 0.45g/cm3 or 0.61g/cm3 while the resin added was 5% . The mechanical properties of MDI populus particleboard met the requirement of the second class of the same standard when the resin consumption was 3% while the density was 0. 65g/cm3. The study results showed that MDI particleboard had good water resistibility. but it's humid heat resistance was not as good as PF particleboard ' s . The ratio of production cost of MDI 、PF and HF was 2. 05 to 1 . 78 to 1. OO for 1m3 particleboard.

关 键 词：异氰酸酯胶 刨花板 人造板 胶粘剂 

分 类 号：TS653.5[轻工技术与工程] TQ437.7[化学工程]