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

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.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.1421 ◽

2011 ◽

Vol 194-196 ◽

pp. 1421-1425 ◽

Cited By ~ 4

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.

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Effect of surface chemical properties of porous microballoons on dynamic mechanical properties of epoxy resin composites.

KOBUNSHI RONBUNSHU ◽

10.1295/koron.46.531 ◽

1989 ◽

Vol 46 (9) ◽

pp. 531-536

Author(s):

Yuko TANAKA

Keyword(s):

Mechanical Properties ◽

Epoxy Resin ◽

Chemical Properties ◽

Dynamic Mechanical Properties ◽

Resin Composites ◽

Surface Chemical ◽

Dynamic Mechanical ◽

Epoxy Resin Composites ◽

Effect Of Surface

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

International Journal of Polymer Science ◽

10.1155/2012/728235 ◽

2012 ◽

Vol 2012 ◽

pp. 1-4 ◽

Cited By ~ 2

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.

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Preparation and Mechanical Properties of Lignin/Epoxy Resin Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.482-484.1959 ◽

2012 ◽

Vol 482-484 ◽

pp. 1959-1962 ◽

Cited By ~ 4

Author(s):

Quan Fu Yin ◽

Ming Wei Di

Keyword(s):

Mechanical Properties ◽

Impact Strength ◽

Epoxy Resin ◽

Bending Strength ◽

Resin Composites ◽

Ftir Analysis ◽

Opposite Trend ◽

Bonding Effect ◽

Epoxy Resin Composites ◽

The Impact

Lignin/epoxy resin composites were prepared by blending lignin with epoxy resin cured by polyamide. The effect of the content of lignin and polyamide on the mechanical properties of the lignin/epoxy resin composites was studied systemically. And the structure for the blend of lignin and epoxy resin without the curing agent was characterized by Fourier transform infrared spectroscopy (FTIR). The results of mechanical properties test showed that the bending strength of the composites decreases gradually with increasing the content of lignin, while the impact strength increased firstly and then decreased. The bending strength of lignin/epoxy resin composites showed a trend of increasing firstly and then decreasing with the increase of the content of polyamide, while the impact strength exhibited an opposite trend. The density for the composites increased with the addition of lignin, and polyamide exhibited an inconspicuous effect on density of the composites. The FTIR analysis results showed that the epoxy resin could be cured by lignin without polyamide, which concluded that the lignin could catalyze the cross-linking of epoxy resin or react with epoxy resin, and this bonding effect would beneficial to the properties of lignin/epoxy resin composites.

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