Exploration of the complementary properties of biobased epoxies derived from rosin diacid and dimerized fatty acid for balanced performance
In this work,a rosin-derived diacid and a dimerized fatty acid were converted to diglycidyl ester type epoxies,respectively,and the chemical structures of the products were confirmed by 1H-NMR,FT-IR and ESI-MS.A novel modification was introduced to the two-step synthesis of diglycidyl ester by using CaO as water scavenger in the dehydrohalogenation step.Nadic methyl anhydride was used as curing agent to cure these two biobased epoxies and their mixtures in different weight ratios.The cure behavior was studied using differential scanning calorimetry (DSC).Flexural and dynamic mechanical properties of the cured resins were determined using three point bending test and dynamic mechanical analysis (DMA).Thermal degradation of the cured resins was examined using thermogravimetric analysis (TGA).Results suggest that the rigid rosin-derived epoxy and the flexible dimer acid-derived are complementary in many properties and the combination of them could result in resins with properly balanced properties and overall improved performance.
Biobased epoxy rosin dimer acid
Kun Huang Jinwen Zhang Mei Li Jianling Xia Yonghong Zhou
Institute of Chemical Industry of Forestry Products,CAF; Institute of Forest New Technology,CAF; Nat Composite Materials and Engineering Center,Washington State University,Pullman,WA 99164,USA Institute of Chemical Industry of Forestry Products,CAF; Institute of Forest New Technology,CAF; Nat
国内会议
福州
英文
267-298
2013-09-01（万方平台首次上网日期，不代表论文的发表时间）