Synthesis and characterization of modified epoxy resins and novel E-glass-/spectra-reinforced composites

Siliconized epoxy matrix systems have been developed using diglycidyl ether bisphenol A LY556 epoxy resin as a base, hydroxyl-terminated polydimethylsiloxane as modifier, and γ-aminopropyltriethoxysilane as cross-linking agent together with dibutyltin dilaurate as a catalyst. Triethylene tetramine was used as a curing agent. Electrical-resistant glass (E-glass) and ultra-high-molecular-weight polyethylene (spectra)-reinforced composites are fabricated by hand-layup technique using the siliconized epoxy matrix systems. The effect of siloxane and the two fibers on the thermal and morphological characteristics of the siliconized epoxy polymer composites were studied using thermogravimetric analysis, differential scanning calorimetry, and scanning electron microscopy. The study reveals that the thermal stability of the epoxy systems is enhanced when siloxane is incorporated in them. Morphological studies show that the E-glass fiber reinforcement has better intermolecular adhesion to the epoxy resin than spectra reinforcement due to the presence of ionic sites.

[1]  M. Frigione,et al.  Evolution of transient states and properties of an epoxy–silica hybrid cured at ambient temperature , 2013 .

[2]  M. Lavorgna,et al.  Silanization and silica enrichment of multiwalled carbon nanotubes: Synergistic effects on the thermal-mechanical properties of epoxy nanocomposites , 2013 .

[3]  Prashant Gupta,et al.  Development of Siliconized Epoxy Resins and Their Application as Anticorrosive Coatings , 2011 .

[4]  Yvonne Bachmann,et al.  High-performance polymers in dental practice , 2011 .

[5]  Qifang Li,et al.  Alkoxysilane functionalized polycaprolactone/polysiloxane modified epoxy resin through sol–gel process , 2008 .

[6]  N. Martín.  Encyclopedia of Polymer Science and Technology , 2007 .

[7]  Sharif Ahmad,et al.  Synthesis, characterization and development of high performance siloxane-modified epoxy paints , 2005 .

[8]  D. Rosu,et al.  Cure kinetics of epoxy resins studied by non-isothermal DSC data , 2002 .

[9]  Chun-Shan Wang,et al.  Effect of the organophosphate structure on the physical and flame‐retardant properties of an epoxy resin , 2002 .

[10]  T. V. Thanikai Velan,et al.  Synthesis and Characterisation of Polyamidoamine-cured DGEBA-siloxane Interpenetrating Polymer Network , 2002 .

[11]  M. Alagar,et al.  Studies on thermal and morphological characteristics of E-glass/Kevlar 49 reinforced siliconized epoxy composites , 2000 .

[12]  P. Sung,et al.  Polysiloxane modified epoxy polymer networks—I. Graft interpenetrating polymeric networks , 1997 .

[13]  S. K. Huang,et al.  Thermally stimulated current study on flexible siloxane-modified epoxy sheets , 1997 .

[14]  J. Fournier,et al.  Changes in molecular dynamics during bulk polymerization of an epoxide-amine system as studied by dielectric relaxation spectroscopy , 1996 .

[15]  Steve K. Huang,et al.  Preparation and structural determination of siloxane-modified sulfone-containing epoxy resins , 1996 .

[16]  Jung-Chieh Chen,et al.  Polyurethane-modified epoxy resin and their polymer particle filled epoxies , 1996 .

[17]  M. Tomoi,et al.  Effect of cross-link density on modification of epoxy resins by N-phenylmaleimide-styrene copolymers , 1993 .

[18]  A. Kinloch,et al.  Toughened plastics I : science and engineering , 1993 .

[19]  T. Ozawa.  Estimation of activation energy by isoconversion methods , 1992 .

[20]  O. Howarth,et al.  Structural and materials properties of a polysulphide-modified epoxide resin , 1992 .

[21]  J. M. Barton.  Epoxy resin chemistry II. Edited by R. S. Bauer, ACS symposium series No. 221, American Chemical Society, 1983. Pp x + 310, price $44.95, US and Canada $36.95. ISBN 0841207771 , 1984 .

[22]  R. Bauer.  Epoxy Resin Chemistry II , 1983 .

[23]  H. Frisch,et al.  Recent advances in interpenetrating polymer networks , 1982 .

[24]  R. Bauer.  Epoxy Resin Chemistry , 1979 .

[25]  C. B. Bucknall,et al.  Manufacture of Toughened Plastics , 1977 .

[26]  Rm Wie.  Spectrometric Identification of Organic Compounds , 1974 .

[27]  F. Mcgarry,et al.  Effect of rubber particle size on deformation mechanisms in glassy epoxy , 1973 .

[28]  T. Crompton.  Chemical analysis of organometallic compounds , 1973 .

[29]  Walter Noll,et al.  Chemistry and technology of silicones , 1968 .