ACOUSTIC PROPAGATION IN AN EPOXY RESIN AT VERY LOW TEMPERATURES

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-509-C9-511
Author(s):  
P. Doussineau ◽  
W. Schön
Keyword(s):  
Epoxy Resin ◽  
Low Temperatures ◽  
Acoustic Propagation

scholarly journals Thermally Healable and Recyclable Graphene-Nanoplate/Epoxy Composites Via an In-Situ Diels-Alder Reaction on the Graphene-Nanoplate Surface

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1057 ◽  
Author(s):  
Cho-Rong Oh ◽  
Dae-Il Lee ◽  
Jun-Hong Park ◽  
Dai-Soo Lee
Keyword(s):  
Bisphenol A ◽  
Epoxy Resin ◽  
Low Temperatures ◽  
Diglycidyl Ether ◽  
Alder Reaction ◽  
Diels Alder ◽  
Epoxy Composites ◽  
Diels Alder Reaction ◽  
Thermosetting Polymers

In this work, thermally healable graphene-nanoplate/epoxy (GNP/EP) nanocomposites were investigated. GNPs were used as reinforcement and crosslinking platforms for the diglycidyl ether of bisphenol A-based epoxy resin (DGEBA) through the Diels-Alder (DA) reaction with furfurylamine (FA). The GNPs and FA could then be used as a derivative of diene and dienophile in the DA reaction. It was expected that the combination of GNPs and FA in DGEBA would produce composites based on the interfacial properties of the components. We confirmed the DA reaction of GNPs and FA at the interface during curing of the GNP/EP nanocomposites. This procedure is simple and solvent-free. DA and retro DA reactions of the obtained composites were demonstrated, and the thermal healing properties were evaluated. The behavior of the GNP/EP nanocomposites in the DA reaction is similar to that of thermosetting polymers at low temperatures due to crosslinking by the DA reaction, and the nanocomposites can be recycled by a retro DA reaction at high temperatures.

Morphological changes in epoxy resin (DGEBA/TETA) exposed to low temperatures

2020 ◽  
Vol 34 (20) ◽  
pp. 2262-2273
Author(s):  
P. Suma Sindhu ◽  
Dipa Ghindani ◽  
Nilanjan Mitra ◽  
Shriganesh S. Prabhu
Keyword(s):  
Epoxy Resin ◽  
Low Temperatures ◽  
Morphological Changes

scholarly journals Polymer composite materials based on quick cure epoxy resin for sports industry

2019 ◽  
pp. 39-42
Author(s):  
D. I. Kogan ◽  
L. V. Chursova ◽  
N. N. Panina ◽  
T. A. Grebeneva ◽  
E. I. Golikov ◽  
...  
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Polymer Composite ◽  
Low Temperatures ◽  
Polymeric Composite ◽  
Performance Characteristics ◽  
Sports Industry ◽  
Curing Period ◽  
And Performance ◽  
Cure Epoxy Resin

The paper deals with aspects of creating a single-component, fast-curing binder ACM 1216, capable of forming a matrix at low temperatures with a short curing period, having high enough strength and performance characteristics.The prospects for the development of polymeric composite materials based of quick cure binder for manufacture of sports industry products are presented.

Ultrastructural investigation of spontaneous pituitary gonadotroph cell adenomas in aging Sprague-Dawley rats

1983 ◽  
Vol 41 ◽  
pp. 702-703
Author(s):  
D. J. McComb ◽  
J. Beri ◽  
F. Zak ◽  
K. Kovacs
Keyword(s):  
Electron Microscopy ◽  
Animal Model ◽  
Epoxy Resin ◽  
Immunoelectron Microscopy ◽  
Tumor Type ◽  
Gonadal Function ◽  
Sprague Dawley ◽  
Male And Female ◽  
Reticulin Fibers ◽  
Sprague Dawley Rats

Gonadotroph cell adenomas of the pituitary are infrequent in human patients and are not invariably associated with altered gonadal function. To date, no animal model of this tumor type exists. Herein, we describe spontaneous gonadotroph cell adenomas in old male and female Sprague-Dawley rats by histology, immunocytology and electron microscopy.The material consisted of the pituitaries of 27 male and 38 female Sprague Dawley rats, all 26 months of age or older, removed at routine autopsy. Sections of formal in-fixed, paraffin-embedded tissue were stained with hematoxylin-phloxine-saffron (HPS), the PAS method and the Gordon-Sweet technique for the demonstration of reticulin fibers. For immunostaining, sections were exposed to anti-rat β-LH, anti-ratβ-TSH, anti-rat PRL, anti-rat GH and anti-rat ACTH 1-39. For electron microscopy, tissue was fixed in 2.5% glutaraldehyde, postfixed in 1% OsO4 and embedded in epoxy-resin. Tissue fixed in 10% formalin, embedded in epoxy resin without osmification, was used for immunoelectron microscopy.

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