Acid Resistance of Glass Fibre Composites with Different Layup Sequencing: Part I-Diffusion Studies

Pai, Raghavendra; Kamath, M. Panduranga; Rao, Raghavendra

doi:10.1177/073168449701601102

Cited by 15 publications

(6 citation statements)

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“…For both solutions, Stamenovic et al [1] concluded that the changes observed on the tensile properties are proportional with the exposure time (number of days in liquid). The effects of sulphuric acid concentration and the sequential layup of glass fibre reinforcements on the diffusion behaviour glass/epoxy laminates were studied by Pai et al [4]. The results showed that composite specimens with chopped strand mat as the skins layers exhibited higher weight gain than those with woven roving mat as the skin layers.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The results showed that composite specimens with chopped strand mat as the skins layers exhibited higher weight gain than those with woven roving mat as the skin layers. Material degradation is more pronounced with the increase of sulphuric acid concentration, which can be explained by hydrolytic dissolving of the matrix in contact with this acid [1,4]. Degradation studies were carried out in different solvents like 10% NaOH, 1 N HCl and 10% NaCl by Sindhu et …”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Effects of alkaline and acid solutions on glass/epoxy composites

Amaro

Reis

Neto

et al. 2013

Polymer Degradation and Stability

124

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Effects of alkaline and acid solutions on glass/epoxy composites

Amaro

Reis

Neto

et al. 2013

Polymer Degradation and Stability

124

View full text Add to dashboard Cite

“…Pai et al (1997) 14,15 studied the performance of laminated composites under service conditions by focusing on the interlaminar shear strength (ILSS), which is a resin-dominated property. The authors subjected two different types of polyesters, a vinyl ester, and three epoxy resins to 15%, 25%, and 30% sulphuric acid solutions for 5 months.…”

Section: Literature Review: Durability Of Isophthalic Polyestermentioning

confidence: 99%

Durability of Isophthalic Polyester Composites Used in Civil Engineering Applications

Dagher

Iqbal²,

Bogner³

2004

Polymers and Polymer Composites

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Fiber Reinforced Polymer (FRP) composites are increasingly used in civil infrastructure applications, primarily because of their high strength-to-weight ratio and corrosion resistance. Further deployment of FRP in the construction market will be accelerated by using low-cost, durable matrix materials. In this paper, published research on the durability of a low-cost matrix, isophthalic polyester (IPE), is reviewed and the results are compared to the durability of the more expensive vinyl ester (VE). The objective is to evaluate the suitability of IPE in civil engineering applications, particularly in conjunction with concrete and high alkaline environments. The analysis indicates that, although vinyl esters are generally more durable than isophthalic polyesters, the performance difference does not always appear to be very significant. More importantly, the literature review revealed that the data on the durability of IPE in concrete and alkaline solutions is of limited usefulness. Since this is the kind of information needed to evaluate IPE's effectiveness in construction applications, further research in these areas is recommended.

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“…Specimens cut from the pipes were immersed for various periods -30, 60, and 90 days in 20% acid concentration at room temperature and 100°C. The effects of sulphuric acid concentration and the sequential lay-up of glass fibre reinforcements on the diffusion behaviour of glassepoxy composite laminates were studied in [5]. Experimental results for the direct effect of an acidic stress environment on the stress intensity factor of woven E-glass fibre reinforced bisphenol-vinylester resin, woven E-glass fibre reinforced bisphenolepoxy resin and woven C-glass fibre reinforced bisphenol-vinylester resin composites are presented in [6].…”

mentioning

confidence: 99%

The influence of service solutions on the longitudinal and circumferential tensile properties of glass-polyester composite pipes

et al. 2011

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Traditionally used metals and alloys as constructive materials in process equipment can nowadays be successfully replaced in many cases by non-metallic composite materials. The influence of service solutions on the state of stress and tensile properties in longitudinal and circumferential direction of glass-polyester pipes is studied in this paper. These analyses are of great importance for the use of examined pipes in chemical industry. The pipes were produced by Corporation "Poliester" Priboj. The influence of two solutions, methanol and ammonia, was studied. The samples were treated in solutions for three, seven and ten days. After that, the samples were subjected to tensile testing by the standard procedure. The stresses and strengths were determined in longitudinal direction (testing on flat test specimens) and in circumferential direction (ring test). The analysis of test results, according to the type of solution and period of exposure, was done in comparison with the results obtained by virgin pipes testing (without the influence of the solution). Micromechanical analysis on broken samples helped to determine the influence of the solution on the structure of composite pipe and to find out the models and mechanisms which produced decrease of strength. Keywords: glass-polyester composite pipe, tension test, ring test, influence of solution, micromechanical analysis.Intensive development of polymer engineering, as well as capabilities of polymers in combination with other materials to form new, synthetic structures of improved mechanical properties, led to a real expansion in use of composite materials, followed by continuous improvement of technology of their manufacturing and application. Composite materials have a wide range of usage, thanks to their good properties under external loading, specific mechanisms of cracking and capability for accumulation of energy, and they pose the greatest competition to the classical construction materials. The advantages are: relatively small mass, good balance strength/mass and stiffness/ mass, good static and dynamic properties, good resistance to corrosion, simplified fabrication and time of assembling.All stated advantages led to the fact that composite pipes are very much used today in chemical, building, infrastructure and military industry. An important use of pipes made of composites glass fibres-polyester resin is in chemical industry. Pipes made for this usage are, during their exploitation, subjected to the influence of static and dynamic loading. Considering the conditions of possible exploitation in chemical industry, the subject of this paper is the determination of the influence of solution, as fluid which is transported through the glass-polyester composite pipes, on their tensile properties in longitudinal and circumferential direction.Different structure of composite pipes causes different distribution of stress, and the development of failure after the initiation of the first cracks. In the last few decades,

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Acid Resistance of Glass Fibre Composites with Different Layup Sequencing: Part I-Diffusion Studies

Cited by 15 publications

References 1 publication

Effects of alkaline and acid solutions on glass/epoxy composites

Effects of alkaline and acid solutions on glass/epoxy composites

Durability of Isophthalic Polyester Composites Used in Civil Engineering Applications

The influence of service solutions on the longitudinal and circumferential tensile properties of glass-polyester composite pipes

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