MoS2 Dispersed Epoxy Composite: Influence of Solvent Quality and Surface Chemistry to Local Chemical Network Formation and its Influence on Nanoscale Toughening Mechanism

2018 ◽  
Author(s):  
JOHN RYAN ◽  
ROBERT WHEELER ◽  
GARY KEDZIORA ◽  
ANDREW SHARITS ◽  
SAMIT ROY ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Network Formation ◽  
Epoxy Composite ◽  
Toughening Mechanism ◽  
Solvent Quality ◽  
Influence Of Solvent

scholarly journals The influence of solvent quality on the static properties of a linear polymer: A molecular dynamics study

1988 ◽  
Vol 144 (5-6) ◽  
pp. 555-557 ◽  
Author(s):  
B. Smit ◽  
A. Van Der Put ◽  
C.J. Peters ◽  
J. De Swaan Arons ◽  
J.P.J. Michels
Keyword(s):  
Molecular Dynamics ◽  
Linear Polymer ◽  
Static Properties ◽  
Solvent Quality ◽  
Influence Of Solvent

Influence of solvent quality on the mechanical strength of ethylcellulose oleogels

2016 ◽  
Vol 135 ◽  
pp. 169-179 ◽  
Author(s):  
A.J. Gravelle ◽  
M. Davidovich-Pinhas ◽  
A.K. Zetzl ◽  
S. Barbut ◽  
A.G. Marangoni
Keyword(s):  
Mechanical Strength ◽  
Solvent Quality ◽  
Influence Of Solvent

Influence of solvent quality on surface forces between polystyrene layers adsorbed onto mica

Langmuir ◽  
1989 ◽  
Vol 5 (1) ◽  
pp. 270-272 ◽  
Author(s):  
Hsuan Wei Hu ◽  
John Van Alsten ◽  
Steve Granick
Keyword(s):  
Surface Forces ◽  
Solvent Quality ◽  
Influence Of Solvent

Neutron Reflectivity Study of the Density Profile of a Model End-Grafted Polymer Brush: Influence of Solvent Quality

1994 ◽  
Vol 73 (25) ◽  
pp. 3407-3410 ◽  
Author(s):  
A. Karim ◽  
S. K. Satija ◽  
J. F. Douglas ◽  
J. F. Ankner ◽  
L. J. Fetters
Keyword(s):  
Density Profile ◽  
Polymer Brush ◽  
Neutron Reflectivity ◽  
Grafted Polymer ◽  
Solvent Quality ◽  
Influence Of Solvent

Effect of red mud waste filler on mechanical and thermal properties of amine functional aniline furfuraldehyde condensate (AFAFFC) modified epoxy composite

2016 ◽  
Vol 45 (3) ◽  
pp. 184-190
Author(s):  
B.C. Samanta ◽  
T. Maity
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Red Mud ◽  
Network Formation ◽  
Epoxy Composite ◽  
Reaction Medium ◽  
Concentration Effect ◽  
Mechanical And Thermal Properties ◽  
Content Type ◽  
Modified Epoxy

Purpose This paper aims to evaluate the concentration effect of red mud waste filler on mechanical and thermal properties of amine functional aniline furfuraldehyde condensate (AFAFFC) modified epoxy composite along with the optimum result of modified epoxy. Design/methodology/approach For effective toughening, different compositions were made by adding various concentration of AFAFFC to epoxy. The concentration of 2, 5 and 10 parts per hundred parts of epoxy resin of aluminium silicate-based pristine red mud waste was incorporated into the each modified epoxy matrix. These filled modified matrixes were cured with ambient temperature curing agent triethylene tetramine and evaluated with respect to their impact, tensile and flexural strengths. The morphology was analyzed by scanning electron microscopy and dynamic mechanical analysis. The thermal stability by thermogravimetric analysis was also reported. Findings The modification of epoxy resin using AFAFFC and filler showed significant enhancement of mechanical strength over unmodified epoxy. The increase depends on the concentration of the modifier and filler. The reason behind this is that in the initial stage of curing, the AFAFFC are miscible with the epoxy and form a homogeneous solution. This good mixing promotes the chemical reaction and network formation. During the curing process, as the molecular weight increases, the component separates with in the reaction medium to form a second dispersed phase. Research Limitations/implications The present paper discussed the effect of only one type of modifier, i.e. AFAFFC, and one filler, i.e. red mud waste filler effect. Besides these by changing the amine and aldehyde, other modifiers could be synthesised and the efficiency of modification of epoxy resin using these modifiers and other filler besides red mud waste such as paddy husk, bamboo dust, etc., could also be studied. Originality/value The present study regarding the concentration effect of modifier and filler was novel, and AFAFFC modified filled epoxy could be used in the field of coating, casting, adhesives, potting and encapsulation of semiconductor devices.

scholarly journals Manipulating conductive network formation via 3D T-ZnO: A facile approach for a CNT-reinforced nanocomposite

2020 ◽  
Vol 9 (1) ◽  
pp. 534-542
Author(s):  
Xianrong Huang ◽  
Lijian Zeng ◽  
Renfu Li ◽  
Zhaojun Xi ◽  
Yichao Li
Keyword(s):  
Network Formation ◽  
Epoxy Composite ◽  
Threshold Value ◽  
Electrical Performance ◽  
Conductive Network ◽  
Polymeric Nanocomposites ◽  
Rheological Measurement ◽  
Vis Spectroscopy ◽  
Carbon Nanofillers ◽  
Scanning Electron

AbstractTo achieve an efficient conductive network while preserving the properties of carbon nanofillers is a challenging and essential issue for the fabrication of highly conductive polymeric nanocomposites. The present paper reports a facile approach to manipulate the network formation in the polymer matrix via introducing the tetrapod ZnO whisker (T-ZnO) in the carbon nanotube (CNT)-reinforced epoxy composite. The influence of T-ZnO on the CNT dispersion was evaluated by UV-Vis spectroscopy, rheological measurement, scanning electron microscopy (SEM), and electrical and mechanical properties of the bulk composite. The results showed that the CNTs tend to disperse more uniformly with an increase in T-ZnO loading. An optimized ratio of 1:2 between CNTs and T-ZnO was found to significantly enhance the electrical conductivity by 8 orders of magnitude. A low percolation threshold of 0.25 wt% CNTs was achieved in this hybrid CNTs/T-ZnO composite, which is only 40% of the threshold value in the pure CNTs/epoxy. The flexural strength and modulus of the hybrid composite were also improved noticeably in comparison to the CNTs/epoxy. The mechanism for increasing the performance of the nanocomposite was analyzed. These results indicated that the T-ZnO can assist to efficiently improve the dispersion and the formation of the conductive network, which is beneficial to the enhancement of the mechanical and electrical performance of the nanocomposite.

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