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bce ›› 2016, Vol. 50 ›› Issue (1): 1-5.

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Preparation and Curing Performance of Straw Ethanol Residue-melamine-urea-formaldehyde Resin

GAO Shi-shuai1, HU Lan-fang1, NAN Jing-ya1, ZHAO Lin-wu1, WANG Chun-peng1,2, CHU Fu-xiang3   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, Beijing 100091, China;
    3. Chinese Academy of Forestry, Beijing 100091, China
  • Received:2015-08-18 Online:2016-01-30 Published:2016-03-17

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Abstract: The straw ethanol residue-melamine-urea-formaldehyde (ERMUF) resin was prepared with straw ethanol residue(ER), melamine(M), urea(U) and formaldehyde(F). The effects of the contents of ER, M and U on the performance of ERMUF resin and the three-plyboard were studied. The optimal raw material ratios were n(F)/n(U) 1.5, n(M)/n(F) 0.15 and m(ER)/m(ER+U) 0.48. The formaldehyde emission from three-plyboards prepared with the ERMUF resin obtained under these above ratios was 0.24mg/L and met E0 grade. The bonding strength was 1.03MPa and met the requirement of typeⅡplyboard. The curing behavior of ERMUF resins with different curing agents was also investigated. The results showed that the combination of NH4Cl and H3PO4 gave good curing performance and the suitable dosages of additions were 1% NH4Cl and 0.5%H3PO4. The corresponding curing time of ERMUF resin was short (148s), the bonding strength of three-plyboard was srtong(1.09MPa) and the formaldehyde emission was 0.25mg/L.

Key words: straw ethanol residue, urea-formaldehyde resin, curing behavior

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