Curing behavior, thermal, and mechanical properties of epoxy resins cured with a novel liquid crystalline dicarboxylic acid curing agent

2013 ◽  
Vol 54 (3) ◽  
pp. 695-703 ◽  
Author(s):  
Le Hoang Sinh ◽  
Nguyen Ngoc Trung ◽  
Bui Thanh Son ◽  
Seunghan Shin ◽  
Dinh Tan Thanh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dicarboxylic Acid ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Curing Agent ◽  
Thermal And Mechanical Properties ◽  
Curing Behavior

Solvent Exchange to Exfoliate Graphene Oxides into Epoxy with Improved Mechanical and Thermal Properties

2015 ◽  
Vol 1110 ◽  
pp. 69-72
Author(s):  
Fu Ke Wang ◽  
Chao Bin He
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Epoxy Resins ◽  
Mechanical And Thermal Properties ◽  
Curing Agent ◽  
Solvent Exchange ◽  
Thermal And Mechanical Properties ◽  
Graphene Oxides ◽  
Curing Agents ◽  
Exchange Technique

The dispersion and exfoliation of graphene oxides in polymer matrix remains a challenge for graphene oxides based epoxy nanocomposites fabrication. In the present paper, we reported a simple and facile solvent exchange technique to successfully transfer graphene oxides (GOs) from aqueous solution to ethanol. In addition, we found that GO dispersion in epoxy resins was affected by the curing agents. Good dispersion of GOs in epoxy resin together with enhanced thermal and mechanical properties were observed when epoxy was cured with aliphatic curing agents. For aromatic curing agent, high loading of GOs leaded to GOs aggregation, but well dispersed GOs was observed at low loading of GOs. Especially, a 12 °C increase of glass transition temperature of the epoxy resin was observed with only 0.1 wt% GOs was added to the epoxy resin.

Curing, Thermal and Mechanical Properties of Liquid Crystalline p-SBPEPB/BPAER/DDE System

2011 ◽  
Vol 239-242 ◽  
pp. 3253-3256 ◽  
Author(s):  
Li Huo ◽  
Jun Gang Gao ◽  
Yong Gang Du
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Impact Strength ◽  
Bisphenol A ◽  
Liquid Crystalline ◽  
Curing Agent ◽  
Thermal And Mechanical Properties ◽  
Component System

The curing, thermal and mechanical properties of bi-component system for bisphenol A epoxy resin (BPAER) modified by liquid crystalline Sulfonyl bis(4,1-phenylene)bis[4-(2,3-epoxypro pyloxy)benzoate] (p-SBPEPB), with 4,4'-diaminodiphenyl ether (DDE) as a curing agent, were investigated. The effect of the different liquid crystalline contents and the heating rate on curing reaction was discussed. The results show that the curing peak temperature decreases, curing rate increases, the glass transition temperature (Tg)and impact strength all increase with adding of liquid crystalline p-SBPEPB when the content is not over 8wt%.

Curing behavior and kinetics of epoxy resins cured with liquid crystalline curing agent

2011 ◽  
Vol 107 (3) ◽  
pp. 1205-1211 ◽  
Author(s):  
Hai-Mei Wang ◽  
Yue-Chao Zhang ◽  
Li-Rong Zhu ◽  
Bao-Long Zhang ◽  
Yu-Ying Zhang
Keyword(s):  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Curing Agent ◽  
Curing Behavior ◽  
Kinetics Of

Liquid Crystalline PET/60HBA-MWNTs Composite: Synthesis, Characterization, and Properties

2014 ◽  
Vol 668-669 ◽  
pp. 31-34
Author(s):  
Jiang Wei Wang ◽  
Xiao Mei Bai ◽  
Zong Hao Li ◽  
Yao Zhang ◽  
Yan Ping Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Acetic Anhydride ◽  
Liquid Crystalline ◽  
Polymerization Process ◽  
Thermal And Mechanical Properties ◽  
Crystallization Property ◽  
Degradation Temperature ◽  
Novel Method ◽  
Liquid Crystalline Polyester

PET/60HBA-MWNTs Liquid Crystalline Polyester (LCP) composite was synthesis by melting polymerization process with a novel method of reacting in acetic anhydride solution. FTIR, XRD, POM, TGA and mechanical properties tests were applied for the characterization of modification of nanotube, crystallization property, thermal and mechanical properties. The results indicate that thermal and mechanical properties of LCP polyester are all enhanced with 0.3wt% MWNTs addition. The degradation temperature (Td) increased for 8°C and the modules, strength and breaking elongation are increased by 39.0%, 62.3% and 46.4% respectively.

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