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Research and application of wireless temperature measurement device in high temperature enclosed environment / Qin Liu in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 2 (05/2016)
[article]
Titre : Research and application of wireless temperature measurement device in high temperature enclosed environment Type de document : texte imprimé Auteurs : Qin Liu, Auteur ; C. Chengtao, Auteur ; Y. Huachun, Auteur ; Z. Guocai, Auteur Année de publication : 2016 Article en page(s) : p. 150-155 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Corps creux
Essais (technologie)
Matières plastiques -- Rotomoulage
Mesure -- Instruments
ThermométrieIndex. décimale : 668.4 Plastiques, vinyles Résumé : Rotational molding, which is widely used in furnishing, entertainment facilities, automotive and boats, military industry and other fields, is a forming method used to produce hollow thermoplastic products. Temperature is the most important process parameter in the rotational molding process, so accurate temperature modulation and control are undoubtedly the main way to ensure product quality. During the rotational molding process, temperature in the oven is very high. Current temperature measuring device cannot make real-time measurement and cannot provide the necessary reference for accurate temperature modulation and control. This article provides an analysis of a wireless temperature measurement device which is used in high temperature enclosed environment, researches the structure, the barrier principle of the temperature measurement device. Finally, tests have been done to verify the working performance. Accurate monitoring and control of the temperature parameter during the rotational molding process can not only improve the working efficiency and energy efficiency of the rotational molding machine, but also provide the reference to design the rotational molding device and molds. Note de contenu : - EXPERIMENTAL : Temperature measurement principle - Testing - Equipment - Test facility - Parameters setting - Test conditions - Test goals - Test steps
- RESULTS AND DISCUSSION : Communication status - Heat insulation performance - Proofreading the measured valuesDOI : 10.3139/217.3018 En ligne : https://drive.google.com/file/d/1Q20QzWcloi_2ivHejiMegVDEAeSDihld/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26169
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 2 (05/2016) . - p. 150-155[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17979 - Périodique Bibliothèque principale Documentaires Disponible Stretch blow molding of mineral filled PET / N. Billon in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 4 (08/2015)
[article]
Titre : Stretch blow molding of mineral filled PET Type de document : texte imprimé Auteurs : N. Billon, Auteur ; Jean-Marc Haudin, Auteur ; C. Vallot, Auteur ; C. Babin, Auteur Année de publication : 2015 Article en page(s) : p. 487-499 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Calorimétrie
Caractérisation
Charges (matériaux)
Dioxyde de titane
Matières plastiques -- Moulage par injection-étirage-soufflage
Microscopie électronique en transmission
Polyéthylène téréphtalate
Thermométrie
Traction (mécanique)
ViscoélasticitéIndex. décimale : 668.4 Plastiques, vinyles Résumé : Injection stretch blow molding (ISBM) is a two-step process that was designed and optimized mainly for unfilled PET resins. The present study focuses on stretch blow molding of a PET filled with different amounts of sub-micronic mineral fillers. The influence of fillers is analyzed thanks to DSC, DMA, tensile testing and processing in different configurations on a prototype apparatus and an industrial machine. It is demonstrated that fillers enhance crystallization kinetics, which leads to a reduction of the processing range. Differences in strain hardening induced by fillers make it necessary to adjust blowing temperature. However, the main effect occurs during the heating phase of the preforms. Temperature within a filled preform is much less homogeneous than in neat PET, making the temperature gradient totally different if the heating protocol is kept unchanged. Once the heating of filled preforms is controlled to reach equivalent temperature gradients, blowing is possible and rather equivalent to that of pure PET. Note de contenu : - EXPERIMENTAL : Materials - Processing - Thermal measurements - Transmission electron microscopy - Calorimetry - Viscoelastic measurements - Tensile testing
- RESULTS AND DISCUSSION : MATERIAL CHARACTERIZATION : Particle distribution in the preforms - DSC measurements - Viscoelastic properties - Large- strain behavior - Synthesis
- RESULTS AND DISCUSSION : PROCESSING : Particle distribution in the processed parts - Preliminary results on the prototype machine - Optimizing conditions in a free-blowing configuration - Use of stretching rod - Results on the industrial machineDOI : 10.3139/217.3066 En ligne : https://drive.google.com/file/d/1K7LFlqLAYCjsGOJ4dYi_g17-ocRHN8wI/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24858
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Code-barres Cote Support Localisation Section Disponibilité 17359 - Périodique Bibliothèque principale Documentaires Disponible Validation of an in-mold multivariate sensor for measurement of melt temperature, pressure, velocity, and viscosity / Gordon Guthrie in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 4 (08/2017)
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Titre : Validation of an in-mold multivariate sensor for measurement of melt temperature, pressure, velocity, and viscosity Type de document : texte imprimé Auteurs : Gordon Guthrie, Auteur ; David O. Kazmer, Auteur ; X.-Y. Tang, Auteur ; Z.-Y. Fan, Auteur ; R. X. Gao, Auteur Année de publication : 2017 Article en page(s) : p. 406-415 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse multivariée
Capteurs (technologie)
Etat fondu (matériaux)
Mesure -- Instruments
Polymères
Pression -- Mesure
Thermométrie
Viscosimétrie
Vitesse -- MesureIndex. décimale : 668.4 Plastiques, vinyles Résumé : A multivariate sensor (MVS) is described for measurement of melt temperature, melt pressure, melt velocity, and melt viscosity. Melt pressure and temperature are respectively obtained through the incorporation of a piezo-ceramic element and infrared thermopile. Melt velocity is derived from the initial response of the melt temperature as the polymer melt flows across the sensor lens. The apparent melt viscosity is then derived based on the melt velocity and the time derivative of the increasing melt pressure. The response of the MVS is analyzed using an instrumented mold including piezoelectric pressure sensors, an infrared pyrometer, and thermocouples. A 12-run, blocked half-fractional design of experiments (DOE) was run to characterize the effect of melt temperature, mold temperature, packing pressure, and ram velocity. The results show that the MVS provides excellent measurement of melt temperature and pressure. The accuracy of the melt velocity estimations depended on the ram velocity set-point, yielding a coefficient of determination of 0.91 for the lower ram velocities, and reaching saturation for melt velocities about 450 mm/s. The apparent melt viscosity estimated by the MVS are close to those predicted by the Cross-WLF model, exhibiting appropriate shear thinning but behavior but inconsistent temperature dependence. Note de contenu : - THEORY : Melt pressure - Melt temperature - Melt velocity estimation - Melt viscosity estimation
- EXPERIMENTAL APPROACH
- RESULTS AND DISCUSSION : Pressure and temperature results - Velocity estimation results - Viscosity estimation resultsDOI : 0.3139/217.2964 En ligne : https://drive.google.com/file/d/1XZQTKE5A4MiIhPNBHe6z1_G33PqKZz7p/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28897
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 4 (08/2017) . - p. 406-415[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19165 - Périodique Bibliothèque principale Documentaires Disponible