scholarly journals Preparation and Characterization of Liquid Crystalline Polyurethane/Al2O3/Epoxy Resin Composites for Electronic Packaging

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Shaorong Lu ◽  
Jianfeng Ban ◽  
Kuo Liu
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Liquid Crystalline ◽  
Coefficient Of Thermal Expansion ◽  
Decomposition Temperature ◽  
Resin Composites ◽  
Thermal Decomposition Temperature ◽  
Epoxy Resin Composites ◽  
Oxidation Analysis

Liquid crystalline polyurethane (LCPU)/Al2O3/epoxy resin composites were prepared by using LCPU as modifier. The mechanical properties, thermal stability, and electrical properties of the LCPU/Al2O3/epoxy resin composites were investigated systematically. The thermal oxidation analysis indicated that LCPU/Al2O3/epoxy resin composites can sustain higher thermal decomposition temperature. Meanwhile, coefficient of thermal expansion (CTE) was also found to decrease with addition of LCPU and nano-Al2O3.

Preparation and characterization of Mechanical Properties of Epoxy Resin Composites reinforced with Non Bio-degradable Wastes

2018 ◽  
Vol 5 (9) ◽  
pp. 19723-19727 ◽  
Author(s):  
Asmeeta Jagdev ◽  
Bidyut Prava Jena ◽  
Bijaya Bijeta Nayak ◽  
Suchismita Satapathy
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Resin Composites ◽  
Epoxy Resin Composites

Thermomechanical Properties and Morphology of Liquid Crystalline Polyurethane/Epoxy Resin Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1421-1425 ◽  
Author(s):  
Jian Feng Ban ◽  
Shao Rong Lu ◽  
Dong Guo ◽  
Kuo Liu ◽  
Chong Xi Luo
Keyword(s):  
Epoxy Resin ◽  
Liquid Crystalline ◽  
Decomposition Temperature ◽  
Thermomechanical Properties ◽  
Resin Composites ◽  
Flexible Chain ◽  
Polyurethane Elastomers ◽  
Fracture Feature ◽  
Epoxy Resin Composites ◽  
The Impact

One new kind of epoxy resin toughening agent defined as liquid crystalline polyurethane elastomers (LCPUE) containing mesogenic ester groups and trithylene glycol flexible chain was synthesized and its nematic structure was observed by POM and XRD. The LCPUE was to modify the epoxy resin (E-51). The mechanical properties, fracture surface morphology, and thermal properties of the E-51/LCPUE curing system were systematically investigated. Experimental results revealed that the impact strength of the epoxy resin modified with LCPU is 1.9 times higher than that of the unmodified system, enhanced the thermal decomposition temperature by about 12 °C, and the fracture surfaces all modified systems display tough fracture feature.

STUDY ON THE THERMOMECHANICAL PROPERTIES AND MORPHOLOGY OF POLYACID AMIDE/EPOXY RESIN COMPOSITES

2010 ◽  
Vol 03 (03) ◽  
pp. 165-168
Author(s):  
SHAORONG LU ◽  
XIAOWANG YANG ◽  
CHUN WEI
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Dynamic Mechanical Properties ◽  
Decomposition Temperature ◽  
Thermomechanical Properties ◽  
Aromatic Ester ◽  
Resin Composites ◽  
Fracture Feature ◽  
Epoxy Resin Composites ◽  
The Impact

Polyamic acid (PAA) containing aromatic ester was synthesized and used to modify the epoxy resin (E-51)/PAA curing system. The mechanical properties, dynamic mechanical properties, fracture surface morphology, and thermal properties of the E-51/PAA curing systems were systematically investigated. Experimental results revealed that the impact strength of the cured systems modified with PAA are 3 to 4 times higher than that of the unmodified system, and enhanced the thermal decomposition temperature by about 15°C, while the storage modulus is also higher than that of the unmodified system, and the fracture surfaces of modified systems display tough fracture feature.

Preparation and Characterization of the Modified Carbon Nanotubes Enhanced Epoxy Resin Composites

2006 ◽  
Vol 505-507 ◽  
pp. 1075-1080 ◽  
Author(s):  
Kuang Chyi Lee ◽  
Hsin Her Yu ◽  
Shug June Hwang ◽  
Ye Shiu Li ◽  
Min Hsun Cheng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Activation Energy ◽  
Carbon Nanotubes ◽  
Epoxy Resin ◽  
Resin Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Epoxy Resin Composites ◽  
Modified Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this study, the surfaces of the multi-walled carbon nanotubes (MWNTs) were treated by acrylic acid. The acid-treated MWNTs were functionalized and were characterized by Infrared spectroscopy. The MWNTs were opened at their ends by ultrasonic treating and UV irradiating. Different adding amounts of the opened MWNTs were filled to the epoxy resin, and their mechanical properties and thermal properties were measured by Instron, impact and differential scanning calorimeter (DSC), etc. The optimum adding amount of MWNTs to the epoxy resin is 2.0%, which is according to the parameters obtained from mechanical testing and Tg. The activation energy of the epoxy resin during curing can be calculated from infrared spectra according to the change of the epoxide band. The electrical conductivity of the MWNTs-filled composites was increased with proper (12.87%) amount of MWNTs adding, this is due to the networks constructed between MWNTs completely.

The curing kinetics and mechanical properties of epoxy resin composites reinforced by PEEK microparticles

2020 ◽  
Vol 91 ◽  
pp. 106781
Author(s):  
Ting Zheng ◽  
Hang Xi ◽  
Zixuan Wang ◽  
Xiaohong Zhang ◽  
Yuan Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Curing Kinetics ◽  
Resin Composites ◽  
Epoxy Resin Composites

scholarly journals Development of Coffee Biochar Filler for the Production of Electrical Conductive Reinforced Plastic

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1916 ◽  
Author(s):  
Mauro Giorcelli ◽  
Mattia Bartoli
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Carbon Black ◽  
Epoxy Resin ◽  
Resin Composites ◽  
Powder Form ◽  
Coffee Waste ◽  
Reinforced Plastic ◽  
Epoxy Resin Composites

In this work we focused our attention on an innovative use of food residual biomasses. In particular, we produced biochar from coffee waste and used it as filler in epoxy resin composites with the aim to increase their electrical properties. Electrical conductivity was studied for the biochar and biochar-based composite in function of pressure applied. The results obtained were compared with carbon black and carbon black composites. We demonstrated that, even if the coffee biochar had less conductivity compared with carbon black in powder form, it created composites with better conductivity in comparison with carbon black composites. In addition, composite mechanical properties were tested and they generally improved with respect to neat epoxy resin.

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