Journal ArticleDOI
An epoxy resin copolymer with zero shrinkage
TLDR
This epoxy resin copolymer with zero shrinkage has been used as an adhesive to join the optical parts of a large optical telescope.Abstract:
Epoxy resin copolymer with zero shrinkage can be obtained by copolymerizing epoxy resin E51 with the expanding monomer of 3,9-di(5-norbornene-2,2)-1,5,7,11 -tetraoxaspiro[5,5]undecane (NSOC). The volume changes of an epoxy resin copolymerized with various amounts of NSOC during cure was measured with a dilatometer. The epoxy copolymer giving zero shrinkage was an epoxy resin with a E51:NSOC ratio equivalent to 5.88∶1. This epoxy resin copolymer with zero shrinkage has been used as an adhesive to join the optical parts of a large optical telescope.read more
Citations
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Reduction of residual stress in montmorillonite/epoxy compounds
TL;DR: In this article, an epoxy resin was cured while in intimate contact with small amounts of epoxy-pharmic montmorillonites, and it was determined that cured epoxy exists within the Montmorillonite interlayer by the observation of very high interlayer spacings, even greater than 8 nm.
Journal ArticleDOI
Study on the volumetric expansion of benzoxazine curing with different catalysts
TL;DR: In this article, a systematic investigation on the volumetric expansion of four benzoxazine systems, which are benzoxazines, benoxazine/tertiary amine and organic acid, was done by using gravitometric and dilatometric methods.
Journal ArticleDOI
Chemical shrinkage characterization techniques for thermoset resins and associated composites
TL;DR: In this paper, all the techniques used in the literature for the characterization of Sh of resin and composite are reported briefly with their respective advantages, disadvantage and important results, which later on has been used to find tensor of Sh for the simulation of residual stresses and shape distortion of composite part, etc.
Journal ArticleDOI
“Living” Free Radical Ring-Opening Polymerization of 5,6-Benzo-2-methylene-1,3-dioxepane Using the Atom Transfer Radical Polymerization Method
TL;DR: In this paper, the polymerization of 5,6-benzo-2-methylene-1,3-dioxepane (BMDO) was carried out in the presence of ethyl α-bromobutyrate/CuBr/2,2‘-bipyridine.
Journal ArticleDOI
Epoxy chemistry for electrical insulation
TL;DR: In this article, the authors examine some of the changes that have occurred in epoxy resins and their chemistry and explore the effect of these changes on electrical insulation and present the chemistry in a fashion that will aid insulation designers in compiling their systems and manufacturing processes and will provide enough understanding that some direction can suggest itself to those charged with making electrical products.
References
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Book
Viscoelastic properties of polymers
TL;DR: In this article, the authors describe the nature of Viscoelastic behavior of polymeric systems and approximate relations among the linear Viscoels and approximate interrelations among the Viscelastic Functions.
Journal ArticleDOI
Dental Resins with Reduced Shrinkage During Hardening
TL;DR: Unsaturated spiro-orthocarbonates are monomers that expand on polymerization and will co-polymerize with conventional BIS-GMA based resins andersion of the carbonate in microcrystalline form in liquid monomer appears to be a method to allow its reaction in the initial polymerization.
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Epoxy resin copolymer with zero shrinkage: Part II Thermal and mechanical properties
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