scholarly journals Novel High Performance Materials. Calixarene Derivatives Containing Protective Groups and Polymerizable Groups for Photolithography, and Calixarene Derivatives Containing Active Ester Groups for Thermal Curing of Epoxy Resins

2003 ◽  
Vol 35 (3) ◽  
pp. 213-229 ◽  
Author(s):  
Tadatomi Nishikubo ◽  
Atsushi Kameyama ◽  
Hiroto Kudo
Keyword(s):  
Epoxy Resins ◽  
High Performance ◽  
Thermal Curing ◽  
Active Ester ◽  
Protective Groups

BPA-Free High-Performance Sustainable Polycarbonates Derived from Non-Estrogenic Bio-Based Phenols

2021 ◽  
Author(s):  
Michael Garrison ◽  
Perrin Storch ◽  
William S. Eck ◽  
Valerie Adams ◽  
Patrick Fedick ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Epoxy Resins ◽  
High Performance ◽  
High Volume ◽  
Endocrine Disrupter

Bisphenol A (BPA) is a versatile petrochemical used in the preparation of high volume polymers including polycarbonates and epoxy resins. Unfortunately, BPA is also an endocrine disrupter and has been...

scholarly journals Improved epoxy thermosets by the use of poly(ethyleneimine) derivatives

2017 ◽  
Vol 2 (8) ◽  
Author(s):  
Cristina Acebo ◽  
Xavier Ramis ◽  
Angels Serra
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resins ◽  
High Performance ◽  
Polymer Network ◽  
General Purpose ◽  
High Adhesion ◽  
Hyperbranched Poly ◽  
Fiber Reinforced Materials ◽  
Wide Range ◽  
Good Heat

Abstract Epoxy resins are commonly used as thermosetting materials due to their excellent mechanical properties, high adhesion to many substrates and good heat and chemical resistances. This type of thermosets is intensively used in a wide range of fields, where they act as fiber-reinforced materials, general-purpose adhesives, high-performance coatings and encapsulating materials. These materials are formed by the chemical reaction of multifunctional epoxy monomers forming a polymer network produced through an irreversible way. In this article the improvement of the characteristics of epoxy thermosets using different hyperbranched poly(ethyleneimine) (PEI) derivatives will be explained.

Study on Field Thermal Curing of Ultra-High-Performance Concrete Employing Heat of Hydration

2017 ◽  
Vol 114 (5) ◽  
Author(s):  
L. A. Sbia ◽  
A. Peyvandi ◽  
J. Lu ◽  
S. Ul Abideen ◽  
R. R. Weerasiri ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Heat Of Hydration ◽  
Thermal Curing ◽  
Ultra High Performance Concrete

scholarly journals Synthesis of Benzene Tetracarboxamide Polyamine and Its Effect on Epoxy Resin Properties

Polymers ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 782 ◽  
Author(s):  
Seoyoon Yu ◽  
Wonjoo Lee ◽  
Bongkuk Seo ◽  
Chung-Sun Lim
Keyword(s):  
Epoxy Resin ◽  
Epoxy Resins ◽  
High Performance ◽  
Protective Coatings ◽  
Industrial Applications ◽  
Thermomechanical Properties ◽  
Scanning Calorimetry ◽  
Adhesive Properties ◽  
Cross Sectional ◽  
Value Determination

Epoxy resins have found various industrial applications in high-performance thermosetting resins, high-performance composites, electronic-packaging materials, adhesives, protective coatings, etc., due to their outstanding performance, including high toughness, high-temperature performance, chemical and environmental resistance, versatile processability and adhesive properties. However, cured epoxy resins are very brittle, which limits their applications. In this work, we attempted to enhance the toughness of cured epoxy resins by introducing benzene tetracarboxamide polyamine (BTCP), synthesized from pyromellitic dianhydride (PMDA) and diamines in N-methyl-2-pyrrolidone (NMP) solvent. During this reaction, increased viscosity and formation of amic acid could be confirmed. The chemical reactions were monitored and evidenced using 1H-NMR spectroscopy, FT-IR spectroscopy, water gel-phase chromatography (GPC) analysis, amine value determination and acid value determination. We also studied the effect of additives on thermomechanical properties using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamical mechanical analysis (DMA), thermomechanical analysis (TMA) and by measuring mechanical properties. The BTCP-containing epoxy resin exhibited high mechanical strength and adhesion strength proportional to the amount of BTCP. Furthermore, field-emission scanning electron microscopy images were obtained for examining the cross-sectional morphology changes of the epoxy resin specimens with varying amounts of BTCP.

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