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生物质化学工程

生物质化学工程 ›› 2019, Vol. 53 ›› Issue (5): 9-14.doi: 10.3969/j.issn.1673-5854.2019.05.002

• 研究报告 • 上一篇    下一篇

协同交联型大豆胶黏剂的流变与固化性能研究

王广彬1,王利军1,陈家宝1,李玲1,王春鹏1,2,3,储富祥1,2,3,许玉芝1,2,3,*()   

  1. 1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业和草原局 林产化学工程重点实验室; 江苏省 生物质能源与材料重点实验室, 江苏 南京 210042
    2. 中国林业科学研究院 林业新技术研究所, 北京 100091
    3. 南京林业大学 江苏省林业资源高效加工利用协同创新中心, 江苏 南京 210037
  • 收稿日期:2018-04-17 出版日期:2019-09-30 发布日期:2019-09-27
  • 通讯作者: 许玉芝 E-mail:xuyuzhi@icifp.cn
  • 作者简介:王广彬(1994-),男,山东济宁人,硕士生,主要从事生物质材料研究工作
  • 基金资助:
    国家重点研发计划资助项目(2016YFD0600705);木竹产业技术创新战略联盟科研计划课题(TIAWBI201604)

Rheological Behaviors and Curing Properties of Synergistic Cross-linked Soybean Based Adhesives

Guangbin WANG1,Lijun WANG1,Jiabao CHEN1,Ling LI1,Chunpeng WANG1,2,3,Fuxiang CHU1,2,3,Yuzhi XU1,2,3,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
    3. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
  • Received:2018-04-17 Online:2019-09-30 Published:2019-09-27
  • Contact: Yuzhi XU E-mail:xuyuzhi@icifp.cn
  • Supported by:
    国家重点研发计划资助项目(2016YFD0600705);木竹产业技术创新战略联盟科研计划课题(TIAWBI201604)

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摘要：

利用饲料级大豆粉为原料，通过水性聚酰胺和异氰酸酯对其进行协同复合改性制备出具有良好流变行为和固化性能的大豆胶黏剂。采用旋转流变仪研究了复合改性剂用量对大豆胶黏剂流变行为和固化性能的影响，结果表明：改性后的大豆胶黏剂属于假塑性流体，当水性聚酰胺添加量为10%时，所得大豆胶黏剂的流变性能较优，而异氰酸酯添加量对大豆胶黏剂的流变行为几乎没有影响；运用动态温度扫描模式研究大豆胶黏剂的黏弹性能，异氰酸酯添加量对大豆胶黏剂的储能模量和损耗模量影响较大。水性聚酰胺/异氰酸酯协同交联体系可与大豆蛋白分子间发生交联，当10%水性聚酰胺和4%异氰酸酯协同改性时，所得胶合板的胶合强度可达0.74 MPa，满足国家Ⅱ类胶合板使用要求（≥0.70 MPa）。

关键词: 大豆胶黏剂, 协同交联, 流变行为, 固化性能, 胶合强度

Abstract:

Soybean-based adhesives with good rheological behaviors and curing properties were made of soybean flour by synergistic modification of aqueous polyamide and isocyanate. The effect of various modifiers on the rheological behaviors was investigated by using rotational rheometer. The results showed that the soy-based adhesives were pseudoplastic fluid, and the rheological behavior was better when 10% aqueous polyamide was added, but the isocyanate cross-linking agent had no influence on the rheological behavior of these adhesives at room temperature. Through the dynamic temperature scan mode of the rheometer test, it was found that the amount of isocyanate had great influence on the storage modulus and loss modulus of soybean adhesive. The bonding strength was 0.74 MPa and meeting the national board Ⅱ requirements(≥ 0.70 MPa) when 10% aqueous polyamide and 4% isocyanate were added simultaneously, which indicated that the cross-linking reaction happened between the aqueous polyamide/isocyanate synergistic cross-linking system and soy protein molecules.

Key words: soy-based adhesives, synergistic cross-linking, rheological behaviors, curing properties, bonding strength

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