scholarly journals Studies on Thermal, Mechanical and Morphological Behaviour of Caprolactam Blocked Methylenediphenyl Diisocyanate and Bismaleimide Modified Epoxy Matrices

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Daofang Shi ◽  
Mingkang An ◽  
Guojun Wang
Keyword(s):  
Methylenediphenyl Diisocyanate ◽  
Epoxy Matrices ◽  
Modified Epoxy

Preparation and properties of high performance phthalide-containing bismaleimide modified epoxy matrices

2011 ◽  
Vol 121 (6) ◽  
pp. 3122-3130 ◽  
Author(s):  
Xuhai Xiong ◽  
Ping Chen ◽  
Jinxiang Zhang ◽  
Qi Yu ◽  
Baichen Wang
Keyword(s):  
High Performance ◽  
Epoxy Matrices ◽  
Modified Epoxy

Dielectric monitoring of curing of liquid oligomer-modified epoxy matrices

2001 ◽  
Vol 50 (9) ◽  
pp. 957-965 ◽  
Author(s):  
G Kortaberria ◽  
P Arruti ◽  
I Mondragon
Keyword(s):  
Epoxy Matrices ◽  
Modified Epoxy

Control of morphologies and mechanical properties of thermoplastic-modified epoxy matrices by addition of a second thermoplastic

2003 ◽  
Vol 52 (9) ◽  
pp. 1444-1453 ◽  
Author(s):  
G Peña ◽  
A Eceiza ◽  
A Valea ◽  
P Remiro ◽  
P Oyanguren ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Epoxy Matrices ◽  
Modified Epoxy

scholarly journals Study of heat resistance of epoxy matrix modified by phthalimide for protection of vehicles

2020 ◽  
Vol 99 (3) ◽  
pp. 93-101
Author(s):  
A. Buketov ◽  
A. Sharko ◽  
T. Cherniavska ◽  
T. Ivchenko ◽  
V. Yatsyuk ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Thermophysical Properties ◽  
Epoxy Oligomer ◽  
Thermal Coefficient ◽  
Modified Polymer ◽  
Coefficient Of Linear Expansion ◽  
Main Component ◽  
Epoxy Matrices ◽  
Modified Epoxy ◽  
Allowable Temperature

The perspectives of using new modified polymer-based materials for the restoration of vehicle parts are substantiated in this article. The use of binders based on epoxy diane oligomers is proved to be promising in the formation of anti-corrosion coatings. To improve the properties of epoxy matrices at the preliminary stage of their formation, active additives are introduced. The use of a phthalimide modifier, which contains functional groups active before interfacial interaction, is proved to be promising as well. An epoxy diane oligomer is selected as the binder‘s main component in the formation of composites. The hardener polyethylene polyamine is used for crosslinking the epoxy compositions. It allows to harden materials at room temperatures. The choice of a phthalimide modifier for the improvement of thermophysical properties of the developed materials is substanciated. Heat resistance (according to Martens), glass transition temperature and thermal coefficient of linear expansion of modified epoxy composites are studied. To form a composite material or protective coating with improved thermophysical properties, the modifier phthalimide in the amount of q = 0.25… 0.50 pts. wt. at q = 100 pts. wt. of epoxy oligomer ED-20 should be introduced into the epoxy binder. Based on the tests of thermophysical properties of phthalimide-modified materials, the allowable temperature limits, at which it is possible to use the developed composites, are found.

In-Situ Phase Separation of an Amine-Terminated Siloxane in Epoxy Matrices

1992 ◽  
Vol 274 ◽  
Author(s):  
D. F. Bergstrom ◽  
G. T. Burns ◽  
G. T. Decker ◽  
R. L. Durall ◽  
D. Fryrear ◽  
...  
Keyword(s):  
Phase Separation ◽  
Flexural Modulus ◽  
Silicone Resin ◽  
Elemental Distribution ◽  
Pull Out ◽  
Epoxy Curing ◽  
Distribution Mapping ◽  
Epoxy Matrices ◽  
Modified Epoxy

ABSTRACTWe have developed an amino-functional silicone resin to toughen epoxies which, when prereacted with the epoxy function in resins, undergoes in-situ phase separation during final epoxy curing. SEM analyses of the morphology of fracture surfaces of MY720- DDS, Epon 828-DDS and other epoxy matrices modified with the silicone resin showed rough surfaces with the formation of very uniform <10 μm spheres. Silicon and sulfur elemental distribution mapping showed silicon rich spheres embedded in an epoxy matrix. We report cavitation, particle debonding and pull-out, and an increases in fracture surface area as possible modes of toughening. Silicone modified materials give improvements in slow strain rate G1c fracture toughness measurements of 250–400%, similar to carboxy terminated polybutadiene-acrylonitrile copolymer (CTBN) modifiers, but with a much smaller flexural modulus loss. The Tg of the modified epoxy matrices are maintained, moisture resistance is improved, and flammability is reduced.

Analysis of the damage zone around the crack tip for two rubber-modified epoxy matrices exhibiting different toughenability

Polymer ◽  
2003 ◽  
Vol 44 (5) ◽  
pp. 1537-1546 ◽  
Author(s):  
Marı́a L Arias ◽  
Patricia M Frontini ◽  
Roberto J.J Williams
Keyword(s):  
Damage Zone ◽  
Crack Tip ◽  
Epoxy Matrices ◽  
Modified Epoxy

scholarly journals Toughened carbon fibre-reinforced polymer composites with nanoparticle-modified epoxy matrices

2016 ◽  
Vol 52 (3) ◽  
pp. 1767-1788 ◽  
Author(s):  
D. Carolan ◽  
A. Ivankovic ◽  
A. J. Kinloch ◽  
S. Sprenger ◽  
A. C. Taylor
Keyword(s):  
Carbon Fibre ◽  
Polymer Composites ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Epoxy Matrices ◽  
Modified Epoxy
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