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MRS extrusion technology in fiber recycling - process advantages for fiber and filament production / Ulrich Thiele in CHEMICAL FIBERS INTERNATIONAL, Vol. 64, N° 1 (03/2014)
[article]
Titre : MRS extrusion technology in fiber recycling - process advantages for fiber and filament production Type de document : texte imprimé Auteurs : Ulrich Thiele, Auteur Année de publication : 2014 Article en page(s) : p. 42-43 Langues : Anglais (eng) Catégories : Bouteilles en matières plastiques -- Recyclage
Extrudeuse à système multirotatif
Extrusion filage
Fibres textiles synthétiques
GlycolyseLa glycolyse ou voie d'Embden-Meyerhof-Parnas est une voie métabolique d'assimilation du glucose et de production d'énergie. Elle se déroule dans le hyaloplasme (ou cytosol) de la cellule. Comme son nom l'indique elle nécessite du glucose et a pour produit du pyruvate. Ce dernier peut soit entrer dans le cycle de Krebs, qui se déroule dans la mitochondrie des eucaryotes ou le cytoplasme des bactéries en aérobiose, soit être métabolisé par fermentation en anaérobiose, pour produire par exemple du lactate ou de l'éthanol.
Granulation
Paillettes
Polycondensation
Polyéthylène téréphtalate -- Recyclage
Production
Produits et matériaux recyclésIndex. décimale : 677.4 Textiles artificiels Résumé : MRS extrusion technology currently has a broad range of different recycling applications like fiber waste or bottle flake extrusion and partial glycolysis, as well as converting those waste streams to spinnable pellets or directly into staple fiber, BCF, or spunbond. Note de contenu : - PARTIAL GLYCOLYSIS : Internal fiber recycling - Partial glycolysis of PET bottles flakes and feed to continuous PET polycondensation plant
- PROCESSING WASTE FROM FIBER PRODUCTION INTO SPINNABLE PELLETS OR DIRECT CONVERSION INTO SPINNING MATERIAL : Internal fiber recycling - Converting PET bottle flakes into spinnable pellets or direct conversion into staple fiber, BCF, or spunbondEn ligne : https://drive.google.com/file/d/1vLTFCYrYyr-of97Mu9kwQfSoDcKf9UW4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20968
in CHEMICAL FIBERS INTERNATIONAL > Vol. 64, N° 1 (03/2014) . - p. 42-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16144 - Périodique Bibliothèque principale Documentaires Disponible 16181 - Périodique Bibliothèque principale Documentaires Disponible 16442 - Périodique Bibliothèque principale Documentaires Disponible New developments in high-tenacity PET yarn for maritime and offshore ropes / Milton Briguet Bastos in CHEMICAL FIBERS INTERNATIONAL, Vol. 69, N° 3 (09/2019)
[article]
Titre : New developments in high-tenacity PET yarn for maritime and offshore ropes Type de document : texte imprimé Auteurs : Milton Briguet Bastos, Auteur Année de publication : 2019 Article en page(s) : p. 157-161 Langues : Anglais (eng) Catégories : Cordage
Fibres textiles synthétiques
Filature
Milieu marin
Polycondensation
Polyéthylène téréphtalate
ProductionIndex. décimale : 677.4 Textiles artificiels Résumé : Industrial polyester yarn is considered a commodity, produced in large vol¬umes and sold at low prices. However, with the use of polymer and spinning technologies developed over the last decade, industrial yarn can be suitable and optimized for new application and markets. Note de contenu : - Industrial polyester market background
- PET yarn production using SSP technology
- Industrial PET yarn production using LSP technology
- Improved fiber-grade PET polycondensation process
- Spinning/drawing/heat-setting process
- Tailor-made PET yarn properties - spinnong/drawing and heat-setting
- Results of new polymer and spinning technology on yarn performance
- Polyester for offshore mooring ropes
- Products development for deep water mooring
- Business potential
- Yarn performance for deep water mooring
- Yarn performance for shallow water mooring FOWT
- Other high-performance fibers been developed for maritime and mooring ropes
- Fig. 1 : Production process of industrial polyester yarn by SSP
- Fig. 2 : Production process of industrial PET yarn by LSP
- Fig. 3 : Five-reactor continuous polycondensation unit
- Fig. 4 : Spinning and drawing schematic : godet duo detail
- Fig. 5 : FPSO mooring linesEn ligne : https://drive.google.com/file/d/1qU7ap8Te6AT1qtFeq9oY-xdEN756Kiau/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32912
in CHEMICAL FIBERS INTERNATIONAL > Vol. 69, N° 3 (09/2019) . - p. 157-161[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21141 - Périodique Bibliothèque principale Documentaires Disponible New livery for SSP reactor / Hans Schnell in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 1-2 (01-02/2015)
[article]
Titre : New livery for SSP reactor : Solid-state post-condensation with increased efficiency Type de document : texte imprimé Auteurs : Hans Schnell, Auteur Année de publication : 2015 Article en page(s) : p. 70-72 Langues : Anglais (eng) Catégories : Matières plastiques -- Recyclage
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Polycondensation
Polyesters
Réacteurs chimiquesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Polyamide and polyester can be post-condensated in a solid state polycondensation (SSP) reactor. The higher molecular weights thus achieved lead to the excellent properties required to make the materials suitable for application in high-strength components, fibers or filaments. A tumble reactor is applied for this purpose. It has recently been revised completely and made available as a new generation with its overall efficiency significantly enhanced. Note de contenu : - From established plant design up to new and improved standards with better process performance and new drive concept
- Efficient system controlEn ligne : https://drive.google.com/file/d/1mZJnEAf0N_zUJFQJG03t6cn1J9AF8XRo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23304
in KUNSTSTOFFE INTERNATIONAL > Vol. 105, N° 1-2 (01-02/2015) . - p. 70-72[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16992 - Périodique Bibliothèque principale Documentaires Disponible Optimal prediction of PKS: RSO modified alkyd resin polycondensation process using discrete-delayed observations, ANN and RSM-GA techniques / Chigozie F. Uzoh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 3 (05/2017)
[article]
Titre : Optimal prediction of PKS: RSO modified alkyd resin polycondensation process using discrete-delayed observations, ANN and RSM-GA techniques Type de document : texte imprimé Auteurs : Chigozie F. Uzoh, Auteur ; Okechukwu D. Onukwuli, Auteur Année de publication : 2017 Article en page(s) : p. 607-620 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algorithmes génétiques
Analyse multivariée
Plan d'expérience
Polyalkydes
Polycondensation
Réseaux neuronaux (informatique)
Surfaces de réponse (statistique)Index. décimale : 667.9 Revêtements et enduits Résumé : Alkyd resins are widely used in the paint industry and although they have a long history about 70–100 years, today the developments in alkyds are still welcome and innovations are still needed. Artificial neural network (ANN) and response surface methodology based on a 25−1 fractional factorial design were used as tools for simulation and optimization of the polycondensation process for autooxidative drying alkyd resin from palm kernel stearin: rubber seed oil blend of 70:30 ratio. A feed forward neural network model with Levenberg–Marquardt back propagation training algorithm was adapted to predict the responses (conversion Y1, viscosity Y2, and molecular weight average Y3). The studied input variables were reaction time, temperature, catalyst concentration, oil ratio, and stirring rate. The performance of the RSM and ANN model showed adequate prediction of the responses in terms of the process factors, with MRPD of ±4.47% (Y1), ±2.08% (Y2), ±8.92% (Y3) and ±6.50% (Y1), ±3.31% (Y2), ±10.20% (Y3), respectively. The sensitivity analysis showed that while reaction time is the most effective process parameter, the interaction of the five process variables produced the most significant effect on the studied responses with the overall minimum MSE of 0.079. The optimization task performed using a genetic algorithm linked to the RSM model gave a viable, nondominated optimal response and optimum operating conditions regarding the route to high-quality resin at reduced material and operational costs. Overall, coupled RSM-GA was found to be a better tool for modeling and optimization of the alkyd resin production. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of alkyd resin from modified palm kernel stearin - System prediction via RSM - Sensitivity analysis and system prediction via artificial neural network (ANN) model
- RESULTS AND DISCUSSION : Predictive model for system response aproximation via RSM - Reaction prediction via ANN - Optimization by coupled RSM-GA techniqueDOI : 10.1007/s11998-016-9881-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9881-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28569
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 3 (05/2017) . - p. 607-620[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18899 - Périodique Bibliothèque principale Documentaires Disponible Particle size evolution of melamin-formaldehyde tanning agent on tanning effect / Mengmeng Chen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 5 (05/2018)
[article]
Titre : Particle size evolution of melamin-formaldehyde tanning agent on tanning effect Type de document : texte imprimé Auteurs : Mengmeng Chen, Auteur ; Yahui Wang, Auteur ; Haojun Fan, Auteur ; Yi Chen, Auteur ; Jun Yan, Auteur ; Yu Liu, Auteur Année de publication : 2018 Article en page(s) : p. 151-162 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
Copolymère mélamine-Formaldéhyde
Cuirs et peaux -- Propriétés mécaniques
Polycondensation
Stabilité hydrothermale
Taille des particules
Tannage organiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Melamine-formaldehyde [MF] resin is a tanning agent. Its average particle size [PS] is important for penetrating the skin and thus endowing performance of its resultant leather. The synthesis parameters for MF resin such as pH, molar ratio of formaldehyde to melamine, temperature and reaction time affect its PS. We investigated in detail the growth of MF’s PS and its consequent effects on hydrothermal stability, mechanical properties and the apparent properties of leather. The data showed that a broad range of average PS was formed at the different synthesis stages of MF resin. For example, the first reaction stage of methylolation gave an average particle diameter of 250 nm with a narrow size distribution under the conditions of 45°C, 3:1 molar ratio, a pH of 8.5, and a reaction time of 3 hrs. In this case the resultant leather was poor as it had a low shrinkage temperature, lacked fullness and showed a low-valued elongation at break. During the second polycondensation stage, the PS of MF resin increased with increasing reaction temperature and the molar ratio of formaldehyde to melamine. Furthermore, PS increased more rapidly by lowering the pH of the polycondensation and extending its reaction time. Thus, the new average diameter of MF resin particles reached above 3000 nm when the polycondensation reaction was done inside the skin for 2 hours at a pH of 4.5. Consequently, the resultant leather was white and full. It had a high hydrothermal stability and mechanical strength as evidenced by its fully satisfactory elongation at break. Clearly, the cross-links were formed by multiple site interactions between MF resin with large PS and collagen fibers, which enhanced the tanning effect. Note de contenu : - EXPERIMENTAL : Materials - Reaction of melamine and formaldehyde - Tanning trial - Assessment of properties of tanned leathers
- RESULTS AND DISCUSSION : Parameters affecting the particle size of MF resin tanning agent - The effect of tanning agent's PS on properties of tanned leatherEn ligne : https://drive.google.com/file/d/1nqOi07mAnm5Xjiy0M0yrCKEJqM67qm-7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30533
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 5 (05/2018) . - p. 151-162[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19877 - Périodique Bibliothèque principale Documentaires Disponible Performances et polyvalences des silicones / Joanne Schwark in L'INDUSTRIE TEXTILE, N° 1327 (01/2001)
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PermalinkSynthesis of a novel ladder poly(azomethine-ester) based on PET waste bottles / Issam Ahmed Mohammed in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 3 (07/2019)
PermalinkSynthesis of polyesteramides : poly(ethylene adipate amide) and poly(ethylene succinate amide) and their application as corrosion inhibitors in paint formulations / Mohamed Heba A. in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
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