Mechanical, thermal, and burning properties of viscose fabric composites: Influence of epoxy resin modification

2018 ◽  
Vol 135 (36) ◽  
pp. 46673
Author(s):  
Rathish Rajan ◽  
Egidija Rainosalo ◽  
Sunil Kumar Ramamoorthy ◽  
Selvin P. Thomas ◽  
Janez Zavašnik ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Fabric Composites ◽  
Epoxy Resin Modification

Epoxy resin modification by reactive bio-based furan derivatives: Curing kinetics and mechanical properties

2019 ◽  
Vol 673 ◽  
pp. 147-157 ◽  
Author(s):  
Mohsen Zolghadr ◽  
Mohammad Jalal Zohuriaan-Mehr ◽  
Alireza Shakeri ◽  
Ali Salimi
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Curing Kinetics ◽  
Furan Derivatives ◽  
Epoxy Resin Modification

Modification of epoxy resin by silane-coupling agent to improve tensile properties of viscose fabric composites

2017 ◽  
Vol 75 (1) ◽  
pp. 167-195 ◽  
Author(s):  
Rathish Rajan ◽  
Egidija Rainosalo ◽  
Selvin P. Thomas ◽  
Sunil Kumar Ramamoorthy ◽  
Janez Zavašnik ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Tensile Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Fabric Composites ◽  
Silane Coupling

scholarly journals Improvements of heat resistance and adhesive property of condensed poly-nuclear aromatic resin via epoxy resin modification

2014 ◽  
Vol 11 (4) ◽  
pp. 578-583 ◽  
Author(s):  
Mingbo Wu ◽  
Yuwei Wang ◽  
Wei Jiang ◽  
Shibin Li ◽  
Qiqian Sun ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Epoxy Resin ◽  
Adhesive Property ◽  
Epoxy Resin Modification

Powder-epoxy resin/glass fabric composites with reduced flammability

2019 ◽  
Vol 37 (2) ◽  
pp. 155-175 ◽  
Author(s):  
Rafał Oliwa ◽  
Mariusz Oleksy ◽  
Justyna Czech-Polak ◽  
Magdalena Płocińska ◽  
Sławomir Krauze ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Flame Retardants ◽  
Average Rate ◽  
Total Content ◽  
Heat Emission ◽  
Glass Fabric ◽  
Flame Resistance ◽  
Fabric Composites ◽  
The Matrix ◽  
Main Component

This study investigates the possible enhancement of flame resistance in powder-epoxy resin/glass fabric composites. For this purpose, the halogen-free flame retardants containing phosphorous, nitrogen and aluminium were used. The total content of the fillers did not exceed 25 wt%. The laminates assessed for flame retardancy were designed specifically to be used as components of seats in public transport. Thermal resistance of the laminates and the surfaces of partially burned composites were also examined using thermogravimetric and scanning electron microscopy/energy-dispersive x-ray spectroscopy analyses, respectively. On the basis of the obtained results, it was found that the highest flame resistance (V-0 class, minimum oxygen concentration = 35.5% and maximum average rate of heat emission = 38.5 kW/m2 at an incident heat flux of 50 kW/m2) was identified in the laminates with matrix comprising 15 wt% aluminium diethyl phosphinate and 10 wt% melamine polyphosphate. In turn, the laminates with the matrix containing ammonium polyphosphate as the main component achieved only the V-1 flammability class.

scholarly journals Impact of epoxy resin modification on their strength parameters

2020 ◽  
Vol 18 (4) ◽  
pp. 041-050
Author(s):  
Andrzej Szewczak
Keyword(s):  
Epoxy Resin ◽  
Sem Analysis ◽  
Crosslinking Reaction ◽  
Inorganic Polymers ◽  
Strength Parameters ◽  
Structural Element ◽  
Element Carbon ◽  
Epoxy Resin Modification ◽  
Solid Form ◽  
Chemical Formulas

Modifications of polymer composites are one of the fastest developing fields of technology. Research is focused on two directions: obtaining new composites or modifying existing materials. The first group of tests uses methods for preparing new chemical formulas of polymers containing, as the main structural element: carbon (organic polymers) or silicon (inorganic polymers). In the second group, the research consists in seeking methods to modify the properties of polymers. In building construction, among the others types, the glues (adhesive polymers) are used. They are exerted to connect materials with different physical andmechanical properties. Under the influence of the factor initiating the crosslinking reaction (hardener or temperature), the polymers obtain a solid form. The strength of the glued joint depends on the initial parameters of the glue resin and the target substrate of its application.The glued surface is usually the weakest element in this connection in terms of the possibility of damage due to the effects of loads, therefore methods to improve the strength parameters of adhesives are sought. The study presents the results of own research on methods of modification of a selected epoxy resin used in the technique as a glue. In order to ensure effective mixing of the adhesive with the fillers, ultrasound energy was used. After the resin had hardened, tests were carried out to determine the hardness and tensile strength of the obtained composites. Based on the results, SEM analysis and observation of the effect of ultrasound, the phenomena affecting the changes in the above mechanical properties were explained.

Liquid oxygen compatible epoxy resin: modification and characterization

RSC Advances ◽  
2015 ◽  
Vol 5 (15) ◽  
pp. 11325-11333 ◽  
Author(s):  
Zhanjun Wu ◽  
Shichao Li ◽  
Minjing Liu ◽  
Zhi Wang ◽  
Xin Liu
Keyword(s):  
Epoxy Resin ◽  
Liquid Oxygen ◽  
Epoxy Resin Modification ◽  
Modified Epoxy

Liquid oxygen compatibility mechanism of bromine-modified epoxy resin.

Mechanical Properties of Three-Dimensional Fabric Sandwich Composites

2014 ◽  
Vol 9 (3) ◽  
pp. 155892501400900 ◽  
Author(s):  
Mengyuan Wang ◽  
Haijian Cao ◽  
Kun Qian
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Three Dimensional ◽  
Fiber Composites ◽  
Sandwich Composites ◽  
Shear Properties ◽  
The Core ◽  
Fabric Composites ◽  
Core Height

Three-dimensional fabric sandwich composites (3D fabric composites) were prepared by impregnating epoxy resin in a hand lay-up procedure. Two types of the 3D fabric composites with the core height of 10mm and 20mm were selected to study the mechanical properties of 3D fabric composites, including flat compression, shear, and flexure properties. The results show that the flexure properties of the 3D fabric composites increased with the increase of core height, while the flat compression and shear properties decreased. Compared with the 3D fiber composites, the 3D fabric composites have much better flat compression and shear properties, although the flexure properties were similar. This work could provide a reference for the optimization of design and mechanical properties of the 3D fabric sandwich composites.

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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