Hong Chen, Chun-bin Tan, Jun Gao, Jing-xin Lei. Synthesis of Polyoxazolidines and Their Application in Polyurethane Modification. [J]. Acta Polymerica Sinica (11):1465-1471(2014)
DOI:
Hong Chen, Chun-bin Tan, Jun Gao, Jing-xin Lei. Synthesis of Polyoxazolidines and Their Application in Polyurethane Modification. [J]. Acta Polymerica Sinica (11):1465-1471(2014) DOI: 10.11777/j.issn1000-3304.2014.14061.
Synthesis of Polyoxazolidines and Their Application in Polyurethane Modification
3-oxazolidine (OX) and two kinds of poly-oxazolidines based on OX:malonic acid diethyl-2
2-dimethyl-N-hydroxyethyl-1
3-oxazolidine ester (OX1) and 1
1
5
5-pentane end tetracarboxylic acid tetra-2
2-dimethyl-N-hydroxyethyl-1
3-oxazolidine ester (OX2) have been designed and successfully synthesized.Their structures have been confirmed by 13C-NMR
ESI-MS
elemental analysis and FTIR.Their applications as latent curing agents in single component polyurethane (SPU) systems have been investigated.The results show that the SPU system cured in air without oxazolidine forms lots of foaming and can be swelled
its tensile strength is 3.2 MPa and the elongation at break is 364%.However
the tensile strength and elongation at break of the SPU system cured with the synthesized OX2 can reach 27.2 MPa and 457%
about 9 times and 1.26 times as compared with those the cured SPU system without OX
respectively.The addition of the synthesized OX1 or OX2 can greatly improve the apparent performance
mechanical properties and thermal stability properties of the cured SPU system.
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State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University
School of Chemistry and Material Science, Guizhou Normal University
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University
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