Synthesis and Characterization of Dimmer-Acid-Based Nonisocyanate Polyurethane and Epoxy Resin Composite

In this study, dimmer-acid-based hybrid nonisocyanate polyurethanes (HNIPUs) were synthesized by the one-step method without catalyst. Three polyamines and two epoxy resins were selected as raw materials for HNIPU, and cyclic carbonate was synthesized based on our previous work. All of the products...

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Published inPolymers Vol. 9; no. 12; p. 649
Main Authors He, Xin, Xu, Xiaoling, Wan, Qian, Bo, Guangxu, Yan, Yunjun
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 28.11.2017
MDPI
Subjects
Adhesive strength
Amines
Chemical synthesis
coating
Coatings
Composite materials
Contact angle
Crosslinking
Curing agents
Density
Differential scanning calorimetry
dimer acid
Dynamic mechanical analysis
epoxy resin
Epoxy resins
Fourier transforms
hybrid nonisocyanate polyurethane
Impact strength
Infrared analysis
Materials selection
Polyamines
Polyurethane resins
Thermal analysis
Thermodynamic properties
Thermogravimetric analysis
Water absorption
dimer acid
hybrid nonisocyanate polyurethane
epoxy resin
coating
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Abstract In this study, dimmer-acid-based hybrid nonisocyanate polyurethanes (HNIPUs) were synthesized by the one-step method without catalyst. Three polyamines and two epoxy resins were selected as raw materials for HNIPU, and cyclic carbonate was synthesized based on our previous work. All of the products were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Then, HNIPU coatings were prepared and determined by swelling, water absorption, and water contact angle. The results showed that the HNIPU-4551 have the best mechanical and thermal properties because of its high crosslinking density. Among the different amines, it was confirmed that tetraethylenepentamine was the best amine curing agent for HNIPU coating. Meanwhile, the epoxy resin with a higher epoxy value would also form a higher crosslinking density. Those coatings showed an excellent impact strength, adhesion, flexibility, pencil hardness, hydrophilic, and appropriate crosslinking density.
AbstractList In this study, dimmer-acid-based hybrid nonisocyanate polyurethanes (HNIPUs) were synthesized by the one-step method without catalyst. Three polyamines and two epoxy resins were selected as raw materials for HNIPU, and cyclic carbonate was synthesized based on our previous work. All of the products were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Then, HNIPU coatings were prepared and determined by swelling, water absorption, and water contact angle. The results showed that the HNIPU-4551 have the best mechanical and thermal properties because of its high crosslinking density. Among the different amines, it was confirmed that tetraethylenepentamine was the best amine curing agent for HNIPU coating. Meanwhile, the epoxy resin with a higher epoxy value would also form a higher crosslinking density. Those coatings showed an excellent impact strength, adhesion, flexibility, pencil hardness, hydrophilic, and appropriate crosslinking density.
Author Xu, Xiaoling
Wan, Qian
He, Xin
Bo, Guangxu
Yan, Yunjun
AuthorAffiliation Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and echnology, Huazhong University of Science and Technology, Wuhan 430074, China; n785888@163.com (X.H.); xuxiaoling@hust.edu.cn (X.X.); m201671694@hust.edu.cn (Q.W.); m201671171@hust.edu.cn (G.B.)
AuthorAffiliation_xml – name: Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and echnology, Huazhong University of Science and Technology, Wuhan 430074, China; n785888@163.com (X.H.); xuxiaoling@hust.edu.cn (X.X.); m201671694@hust.edu.cn (Q.W.); m201671171@hust.edu.cn (G.B.)
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Issue 12
Keywords dimer acid
hybrid nonisocyanate polyurethane
epoxy resin
coating
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Snippet In this study, dimmer-acid-based hybrid nonisocyanate polyurethanes (HNIPUs) were synthesized by the one-step method without catalyst. Three polyamines and two...
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SubjectTerms Adhesive strength
Amines
Chemical synthesis
coating
Coatings
Composite materials
Contact angle
Crosslinking
Curing agents
Density
Differential scanning calorimetry
dimer acid
Dynamic mechanical analysis
epoxy resin
Epoxy resins
Fourier transforms
hybrid nonisocyanate polyurethane
Impact strength
Infrared analysis
Materials selection
Polyamines
Polyurethane resins
Thermal analysis
Thermodynamic properties
Thermogravimetric analysis
Water absorption
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Title Synthesis and Characterization of Dimmer-Acid-Based Nonisocyanate Polyurethane and Epoxy Resin Composite
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