3. Characterization of an unsaturated polyester resin for liquid composite molding processes

2020 ◽  
pp. 45-56
Keyword(s):  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Liquid Composite Molding ◽  
Composite Molding

scholarly journals A Study of Nanoclay Reinforcement of Biocomposites Made by Liquid Composite Molding

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Farida Bensadoun ◽  
Nadir Kchit ◽  
Catherine Billotte ◽  
Simon Bickerton ◽  
François Trochu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Flexural Modulus ◽  
Flax Fiber ◽  
Unsaturated Polyester Resin ◽  
Liquid Composite Molding ◽  
Filling Time ◽  
Composite Molding ◽  
Mixing Techniques

Liquid composite molding (LCM) processes are widely used to manufacture composite parts for the automotive industry. An appropriate selection of the materials and proper optimization of the manufacturing parameters are keys to produce parts with improved mechanical properties. This paper reports on a study of biobased composites reinforced with nanoclay particles. A soy-based unsaturated polyester resin was used as synthetic matrix, and glass and flax fiber fabrics were used as reinforcement. This paper aims to improve mechanical and flammability properties of reinforced composites by introducing nanoclay particles in the unsaturated polyester resin. Four different mixing techniques were investigated to improve the dispersion of nanoclay particles in the bioresin in order to obtain intercalated or exfoliated structures. An experimental study was carried out to define the adequate parameter combinations between vacuum pressure, filling time, and resin viscosity. Two manufacturing methods were investigated and compared: RTM and SCRIMP. Mechanical properties, such as flexural modulus and ultimate strength, were evaluated and compared for conventional glass fiber composites (GFC) and flax fiber biocomposites (GFBiores-C). Finally, smoke density analysis was performed to demonstrate the effects and advantages of using an environment-friendly resin combined with nanoclay particles.

Mechanical and Interfacial Characterization of Jute Fabrics Reinforced Unsaturated Polyester Resin Composites

2019 ◽  
Vol 25 ◽  
pp. 22-31 ◽  
Author(s):  
Farhana Islam ◽  
M. Naimul Islam ◽  
Shahirin Shahida ◽  
Harun Ar Rashid ◽  
Nanda Karmaker ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bending Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Bending Modulus ◽  
The Matrix ◽  
Jute Fabrics

Jute fabrics reinforced Unsaturated Polyester Resin (UPR)-based composites were prepared by conventional hand lay-up technique. Different proportions (5 to 50% by weight) of fibre content was used in preparation of the composite. Tensile Strength (TS), Tensile Modulus (TM), Bending Modulus (BM), Bending Strength (BS), Impact Strength (IS) of the fabricated composites were studied. Upon each addition of fiber content in the matrix, mechanical properties of the composites were increased. The Tensile Strength (TS) of the 5% and 50% fiber reinforced composites was 18 MPa and 42 MPa respectively. Scanning Electron Microscopy (SEM) showed interfacial properties of the composites and it was revealed that the bond between fiber and matrix was excellent.

Preparation and Characterization of Unsaturated Polyester/Graphite Nanosheets Composites under Electric Field

2012 ◽  
Vol 182-183 ◽  
pp. 33-36 ◽  
Author(s):  
Hong Yan Zhang ◽  
Xi Shi Tai ◽  
Hai Quan Wang
Keyword(s):  
Electric Field ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
X Ray Diffraction ◽  
Graphite Nanosheets ◽  
Conductive Composites ◽  
Ac Electric Field ◽  
Conductive Fillers

As a conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. We investigate the preparation, configuration and capability of the unsaturated resin/ graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy(SEM), X-ray diffraction(XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were randomly dispersed in the polymer matrix at the beginning, and then oriented with their flakes along the electric field in the polyester resin.

scholarly journals Characterization of Ceramic Waste Filled Unsaturated Polyester Resin

2020 ◽  
Vol 57 (3) ◽  
pp. 52-60
Author(s):  
Mohamed Farsane ◽  
Abdellah Anouar ◽  
Souad Chah ◽  
Miloud Bouzziri
Keyword(s):  
Water Absorption ◽  
Polyester Resin ◽  
Filler Content ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Ceramic Waste ◽  
The Matrix ◽  
Polyester Matrix ◽  
Resin Formulation

In this study, the composites of ceramic waste filler polyester were produced with ceramic waste as the filler and unsaturated polyester resin as the matrix. Various weight of filler loads (particle size [180 �m) were used; 0, 28.5, 41 and 50 wt% in view to better understand the effect of filler content on the mechanical, thermal properties and water absorption of the composites. Additionally, Fourier transform infrared spectroscopy was used to characterize the samples, from the findings, it is noticed an increase in the level of porcelain powder decreased the flexural strength and Hardness and increased the density. The results of water absorption have shown the composites absorbs fewer water. Thermal degradation indicates that the composite is more resistant to temperature than unsaturated polyester matrix due to the effect of porcelain powder incorporated. Moreover, the results reveal an opportunity for using the ceramic waste as filler in unsaturated polyester resin formulation.

Preparation and Characterization of Polypropylene and Unsaturated Polyester Resin Filled with Jute Fiber

2019 ◽  
Vol 1156 ◽  
pp. 60-68 ◽  
Author(s):  
Kamrun N. Keya ◽  
Nasrin A. Kona ◽  
Md. Sahadat Hossain ◽  
Md. Razzak ◽  
Md. Naimul Islam ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyester Resin ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Matrix Composites ◽  
Jute Fabrics ◽  
Commercial Applications

Jute fabrics reinforced Polypropylene (PP) matrix composite was fabricated by compression molding and Unsaturated Polyester Resin (UPR) matrix composites were also fabricated by hand lay-up technique. The fiber content of the composites was 40% by weight. Mechanical properties between two types of composites were compared. Tensile Strength (TS), Tensile Modulus (TM), Elongation at break (Eb%) , and Impact Strength (IS) of the jute fabrics/PP composites were found to be 47 MPa, 1.2 GPa, 13% and 8 kg/cm, respectively. On the other hand, TS, TM, Eb%, and IS of the jute fabrics/UPR composite were found to be 43 MPa, 1.3 GPa, 10% and 6 kg/cm, respectively. It was found that both composites showed almost similar mechanical properties. After tensile testing, fracture sides of both types of the composites were studied by Scanning Electron Microscope (SEM) and the results revealed poor fiber matrix adhesion for jute fabrics with PP and UPR. The fabricated composites became partly biodegradable because of jute (natural fiber) and mechanical properties of both types of composites showed promising results for commercial applications.

scholarly journals Structural and Thermal Characterization of Castor Oil Based Unsaturated Polyester Resin

2020 ◽  
Vol 32 (7) ◽  
pp. 1763-1767
Author(s):  
A. Chowdhury ◽  
S.K. Singh ◽  
P. Anthony
Keyword(s):  
Castor Oil ◽  
1H Nmr Spectroscopy ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Thermal Characterization ◽  
Decomposition Temperature ◽  
Unsaturated Polyester Resin ◽  
Polyester Resins ◽  
Thermal Stability Of

In the present study, unsaturated polyester resins based on castor oil was synthesized. Structure elucidation of the synthesized unsaturated polyester resin was done by FTIR and 1H NMR spectroscopy. Thermogravimetric analysis was used to evaluate the thermal stability of cured unsaturated polyester resin. Thermogram plot was further utilized to calculate various other parameters such as statistic heat-resistant index (Ts) and the integral procedural decomposition temperature (IPDT). Comparable properties with respect to commercial resins were reported for the synthesized polymers

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