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Preparation of sesame protein adhesive by urea modification
  
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KeyWord:sesame protein  adhesive  urea modification
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WEI Xiaobo, WANG Xuede, CHEN Xijian  
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Abstract:
      With sesame protein as raw material, sesame protein adhesive was prepared by urea modification. The effects of urea concentration, material-liquid ratio, reaction time and reaction temperature on apparent viscosity and adhesion strength of sesame protein adhesive were studied through single factor experiment. And the optimal preparation conditions were determined through orthogonal experiment as follows: urea concentration 3 mol/L, material-liquid ratio 1∶?8, reaction time 4 h and reaction temperature 25?℃.Under the optimal conditions, the wet adhesion strength was 0.78 MPa, achieving the requirement of type II plywood (≥0.70 MPa) of national standard.
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