Structure and properties of urethane-modified fatty amine used as waterborne epoxy curing agents based on oil and fat

作者：Li Mei; Xia Jianling^*; Huang Kun; Ding Haiyang

来源：Polymer Materials Science and Engineering, 2011, 27(4): 59-62.

• Based on oil and fat
• Commercial products
• Cured films
• Curing system
• Differential scanning calorimetry methods
• Epoxy curing agent
• Epoxy group
• Fatty alcohols
• Fatty amines
• Infiltration capacity
• Molar ratio
• Optimum properties
• Overall properties
• Pencil hardness
• Polyoxyethylene ether
• Properties of the cured film
• Structure and properties
• Tetraethylenepentamine
• Toluene diisocyanates
• Urethane-modified
• Waterborne epoxy curing agent

Waterborne epoxy curing agent of urethane-modified fatty amine based on oil and fat (CA-B) was synthesized from fatty alcohol polyoxyethylene ether (AEO-6), toluene diisocyanate (TDI), tetraethylenepentamine and acrylonitrile. Complexed CA-B consist with waterborne epoxy latex AB-EP-20, AB-EP-44 and AB-EP-51 respectively. It is understandable after analysis that the overall properties of the curable system CA-B/AB-EP-44 are best. The effects of the molar ratio of epoxy group and amine hydrogen on the properties of the cured film for CA-B/AB-EP-44 system were investigated by means of differential scanning calorimetry method and the mechanical properties. The results indicate that the optimum properties are as follows flexibility 1 mm, pencil hardness 2 H, adhesion 1, impact resistance ≥60 kg&middotcm, alcohol infiltration capacity 15.3% (24 h), when the molar ratio of epoxy group to amine hydrogen is 1.1:1. Under the conditions, the mechanical properties of the curing system has reached the level of the domestic commercial products of contrast sample I and contrast sample II.

• 出版日期2011
• 单位中国林业科学研究院