INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN

Li-ming Tang~() Ji Feng Yu Wang Advanced Materials Laboratory; Department of Chemical Engineering; Tsinghua University; Beijing 100084; China

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INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN

Updated：2021-06-21

- INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN
- INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN
- 高分子科学（英文版） 2007年第6期页码：545-553
- Affiliations：
- Author bio：
- Funds：
  
  The work was financially supported by the National Science Foundation of China（Nos.20204005,50233030）.()
- DOI：
  中图分类号： O631.3
- 纸质出版：2007
- Accepted：
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[1].INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY(ESTER-AMINE)S ON THE CURING PERFORMANCE WITH EPOXY RESIN[J].Chinese Journal of Polymer Science,2007(06):545-553.

Li-ming Tang~() Ji Feng Yu Wang Advanced Materials Laboratory, Department of Chemical Engineering, Tsinghua University, et al. INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN[J]. 2007, (6): 545-553.
[1].INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY(ESTER-AMINE)S ON THE CURING PERFORMANCE WITH EPOXY RESIN[J].Chinese Journal of Polymer Science,2007(06):545-553. DOI：

Li-ming Tang~() Ji Feng Yu Wang Advanced Materials Laboratory, Department of Chemical Engineering, Tsinghua University, et al. INFLUENCE OF MOLECULAR STRUCTURES OF SECONDARY AMINE TERMINATED POLY（ESTER-AMINE）S ON THE CURING PERFORMANCE WITH EPOXY RESIN[J]. 2007, (6): 545-553. DOI：

摘要

正

Five secondary amine terminated poly（ester-amine）s（defined as PEA）with controlled molecular structures were synthesized through reacting excessive piperazine with phthalicdiglycol diacrylate（PDDA）and 1

1-trimethylolpropane triacrylate（TMPTA）at a constant secondary amine/acrylate group ratio of 1.5/1 and at different PDDA/TMPTA molar ratios. Both IR and

H-NMR spectra indicated that all acrylate groups were consumed in the reaction

based on which the structural parameters were calculated from the

H-NMR spectra.With decreasing PDDA/TMPTA ratio

the content of secondary amine

degree of branching

molecular weight

and T

increased accordingly.These polymers were further used as both crosslinkers and flexibilizers for a linear epoxy resin E51 to form cured films under ambient condition.The gel content

relative hardness and T

of the resulting films increased as PEA molecules changed from linear to highly branching structures.Due to the flexibility of PEA molecules

all the films possessed excellent mechanical performance.

Abstract

1-trimethylolpropane triacrylate（TMPTA）at a constant secondary amine/acrylate group ratio of 1.5/1 and at different PDDA/TMPTA molar ratios. Both IR and

H-NMR spectra indicated that all acrylate groups were consumed in the reaction

based on which the structural parameters were calculated from the

H-NMR spectra.With decreasing PDDA/TMPTA ratio

the content of secondary amine

degree of branching

molecular weight

and T

increased accordingly.These polymers were further used as both crosslinkers and flexibilizers for a linear epoxy resin E51 to form cured films under ambient condition.The gel content

relative hardness and T

of the resulting films increased as PEA molecules changed from linear to highly branching structures.Due to the flexibility of PEA molecules

all the films possessed excellent mechanical performance.

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