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| Arhant, Mael; Briancon, Christophe; Burtin, Christian; Davies, Peter. |
| The composite materials used at sea are today nearly all based on thermoset resins (polyester, epoxy). However, there is an increasing number of thermoplastic matrix polymers available on the market (PP, PA, PPS, PEEK…), which offer possibilities for forming by local heating, attractive mechanical properties and the potential for end of life recycling. The aim of this study was to design, manufacture and test thermoplastic composite pressure vessels for 4500 meter depth, in order to establish a technical, economic and ecological assessment of the use of these materials to replace traditional composites underwater. First, finite element calculations have been carried out to optimize the stacking sequence with respect to the external pressure and buckling... |
| Tipo: Text |
Palavras-chave: Thermoplastic; Polyamide; Carbon fibres; Buckling; Implosion. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00476/58742/61268.pdf |
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| Davies, Peter; Le Gac, Pierre-yves; Le Gall, Maelenn. |
| A new matrix resin was recently introduced for composite materials, based on acrylic resin chemistry allowing standard room temperature infusion techniques to be used to produce recyclable thermoplastic composites. This is a significant advance, particularly for more environmentally-friendly production of large marine structures such as boats. However, for such applications it is essential to demonstrate that composites produced with these resins resist sea water exposure in service. This paper presents results from a wet aging study of unreinforced acrylic and glass and carbon fibre reinforced acrylic composites. It is shown that the acrylic matrix resin is very stable in seawater, showing lower property losses after seawater aging than those of a... |
| Tipo: Text |
Palavras-chave: Acrylic; Thermoplastic; Infusion; Seawater; Immersion. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00347/45815/45541.pdf |
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| Anwar,Mohd. Shahbaz; Negi,Harshita; Zaidi,Mohd. Ghulam Haider; Gupta,Sanjay; Goel,Reeta. |
| Thermoplastics, poly vinyl chloride and low-density polyethylene were treated in the presence of indigenously developed bacterial consortium in laboratory and natural conditions. The consortium was developed using four bacteria, selected on the basis of utilization of PVC as primary carbon source, namely P. otitidis, B. aerius, B. cereus and A. pedis isolated from the plastic waste disposal sites in Northern India. The comparative in-vitro treatment studies as revealed by the spectral and thermal data, illustrated the relatively better biodegradation potential of developed consortium for PVC than the LDPE. Further, the progressive treatments of both the thermoplastics were conducted for three months under natural conditions. For this purpose,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodeterioration; Bioformulation; Thermoplastic; FT-IR; SEM; TG-DTG-DTA. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300016 |
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