Leather Science and Engineering ›› 2021, Vol. 31 ›› Issue (3): 36-40.doi: 10.19677/j.issn.1004-7964.2021.03.007

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Preparation and Application of Collagen Adhesive

PU Hongxia1,2, JI Dingyu3, ZHANG Yiwei1,2, DAI Rui1,2,*, CHEN Hui1,2, SHAN Zhihua1,2,*   

  1. 1. College of Biomass Science and Engineering, Sichuan University, Chengdu 610065,China;
    2. National Engineering Research Center of Clean Technology in Leather Industry , Sichuan University, Chengdu 610065,China;
    3. Department of Resource and Environment Engineering, Sichuan Water Conservancy Vocational College, Chengdu 61231, China
  • Received:2020-12-05 Published:2021-06-28 Online:2021-05-28

Abstract: The wood protein glue is prepared by using the collagen degradation product extracted from the waste leather shavings by the alkaline method as the raw material and epichlorohydrin as the cross-linking agent. By controlling the amount of epichlorohydrin, reaction temperature, reaction time and pH orthogonal method to synthesize protein glue (CA). Optimize the synthesis conditions by evaluating the viscosity of CA glue and the bonding strength of plywood. The CA adhesive synthesized under the optimized conditions has a solid content of about 42.0% and a viscosity of 1.56 Pa·s. The main quality indicators of plywood meet the requirements of Type I and Type II in GB/T9846-2015.

Key words: waste leather shavings, plywood, protein adhesive, mechanical properties

CLC Number: