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Abrasion characteristics of ground calcium carbonate products / Lane Shaw in COATINGS WORLD, Vol. 23, N° 9 (09/2018)
[article]
Titre : Abrasion characteristics of ground calcium carbonate products Type de document : texte imprimé Auteurs : Lane Shaw, Auteur ; David Yu, Auteur Année de publication : 2018 Langues : Américain (ame) Catégories : Abrasion
Carbonate de calcium broyé
Dureté (matériaux)
Granulométrie
Micrographie
Morphologie (matériaux)Index. décimale : 667.9 Revêtements et enduits Résumé : When evaluating the abrasion characteristics of a naturally occurring mineral, one must take into consideration both the abrasivity of the mineral and of the impurities. Abrasion is a function of concentration, hardness and particle size of the material and/or impurity. A mineral with a high concentration of a hard impurity is not necessarily more abrasive. It is also highly dependent on the particle size of the impurity. Note de contenu : - GCC and abrasivity
- Morphology
- Photo 1 : Pin-modified rotor
- Fig. 1 : Hardness scales
- Fig. 2 : Acid insoluble weight percent of various 3 µm calcium carbonate grades
- Fig. 3 : Abrasion comparison of 3 µm and 20 µm dry ground calcium carbonates
- Fig. 4 : Abrasion comparison of 3 µm products
- Fig. 5 : Particle sizes of acid insoluble silica fractions
- Fig. 6 : Micrographs of 20 µm and 3 µm acid insoluble fractions from Marble Hill, GA marble and Marble Falls, TX limestone. These photos are the acid insolubles (silica and silicate) composition of the calcium carbonate ore source
- Fig. 7 : Statistical correlation for acid insoluble amount and particle sizeEn ligne : https://www.coatingsworld.com/issues/2018-09-01/view_features/abrasion-character [...] Format de la ressource électronique : Html Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32515
in COATINGS WORLD > Vol. 23, N° 9 (09/2018)[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Adjusting UV-assisted rheology / Tobias Sommer in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2022)
[article]
Titre : Adjusting UV-assisted rheology : Curing process of UV-curable inkjet inks can be improved and thus the migration potential of harmful photoinitiators can be significantly reduced Type de document : texte imprimé Auteurs : Tobias Sommer, Auteur ; Felipe Wolff Fabris, Auteur ; Christopher Giehl, Auteur ; Anton Paar, Auteur Année de publication : 2022 Article en page(s) : p. 42-46 Langues : Anglais (eng) Catégories : Emballages
Encre -- Séchage sous rayonnement ultraviolet
Encre jet d'encre
Granulométrie
Photoamorceurs (chimie)
Photoréticulation
Pigments
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : The development of radiation-curing inkjet inks, such as low-migration inks for the packaging industry, represents a demanding process. At the same time, however, this also increases the need for quality assurance and characterisation methods that are adapted to the actual curing process. UV-assisted rheology has great potential for this. Note de contenu : - Measurement methodology
- A question of formulation
- Curing reaction : particle size
- Curing reaction : pigments
- Curing reaction : initiators
- Curing reaction : irradiation intensityEn ligne : https://drive.google.com/file/d/19GBeTOxKnW5IT6TTTZtiPHrC4e9Xsrrz/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38024
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2022) . - p. 42-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23593 - Périodique Bibliothèque principale Documentaires Disponible Application of ultrasound in eco-friendly fatliquoring of leather / Mohamed Abu Sayid Mia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 3 (03/2024)
[article]
Titre : Application of ultrasound in eco-friendly fatliquoring of leather Type de document : texte imprimé Auteurs : Mohamed Abu Sayid Mia, Auteur ; Mohammad Nurnabi, Auteur ; Mohamed Zahangir Alam, Auteur Année de publication : 2024 Article en page(s) : p. 139-144 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Propriétés physiques
Cuirs et peaux -- Teneur en matières grasses
Emulsions
Granulométrie
Huiles et graisses
Produits de nourriture du cuir
Ultrasons
ViscositéIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This article describes the effect of ultrasound on fatliquoring of leather. Preparations of fatliquor-emulsions as well as fatliquoring of leathers were carried out in presence of ultrasound. Ultrasound aids in reducing the size of fatliquor emulsion and increasing fat content of leather. It was found that the particle size of fatliquor emulsion was reduced by more than 22% and fat contents of leather were increased up to 40% due to using ultrasound. Moreover, smooth penetration and uniform distribution of fat in the processed leathers were observed. Physical properties of both ultrasoundassisted fatliquored leather and conventionally fatliquored leather were also studied in detail. Tensile strength, stitch tearing strength, tongue tearing strength, grain crack load, ball bursting load, Bauman tear strength, color fastness and perspiration of ultrasound assisted fatliquored leather were better compared to that of without ultrasound. Note de contenu : - EXPERIMENTAL : Materials - Experimental set-up - Fatliquoring of leather samples - Measurement of particle size - Measurement of viscosity - Determination of fat content - RESULTS AND DISCUSSION : Effect of sonication time on the particle size - Effect of ultrasound on the viscosity of fatliquor emulsions - Effect of ultrasound on fat content of leather - Physical properties of the fatliquored leathers
- Fig. 1 : Structure of sulfited fatliquor component
- Table 1 : Physico-chemical properties of leather fatliquored with 5% (w/v) Remsynol ESI emulsion using ultrasound and conventional method
- Table 2 : Fastness properties of the fatliquored leatherEn ligne : https://drive.google.com/file/d/1bTmKIVoKbA-1_v3LAG0hKqGyhEHg7Bi2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40620
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 3 (03/2024) . - p. 139-144[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24535 - Périodique Bibliothèque principale Documentaires Disponible Assessment of dust adhesion forces on the hydrophilic/hydrophobic glasses at two representative CSP sites in Morocco / Ayoub El Baraka in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
[article]
Titre : Assessment of dust adhesion forces on the hydrophilic/hydrophobic glasses at two representative CSP sites in Morocco Type de document : texte imprimé Auteurs : Ayoub El Baraka, Auteur ; Anouar Jorio, Auteur ; Ahmed Ennaoui, Auteur ; Asmae Khaldoun, Auteur Année de publication : 2023 Article en page(s) : p. 403-412 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de contact
Diffractométrie de rayons X
Encrassement
Energie de surface
Granulométrie
Miroirs solaires
Poussière
Revêtements antisalissuresIndex. décimale : 667.9 Revêtements et enduits Résumé : Many sites with high solar radiation like MENA regions face high dust loads that reduce the efficiency generation of solar plants. In this context, this paper provides an overview of dust adhesion mechanism on the surfaces of concentrated solar power (CSP) mirrors. The assessment of dust adhesion was performed on the hydrophilic/hydrophobic glasses at two representative CSP locations in Morocco (Ouarzazate and Midelt). Two types of reflecting mirrors are examined. The first one is based on superhydrophilic TiO2 protective coating, and the second one is the reflector mirror based on hydrophobic Al2O3 protective coating. The research shows that for particle radius of 2 µm, the Van der Waals force dominates for hydrophobic coating for Midelt with high humidity. In contrast, the capillary forces are prominent on the superhydrophilic TiO2 coating for Ouarzazate with low humidity. The results show good agreement with the X-ray diffraction results. However, as compared to Midelt dust, the dust particles from Midelt are formed of Smectites for the clay fractions. Smectite is highly swelling clay in water compared with Illite, Kaolinite, and Vermiculites types of clay minerals (low swelling clay in water). This work provided a facile method for the calculus of adhesion forces on the surfaces of CSP mirrors and as result helps us to select the best types of anti-soiling coating for reflector mirrors. Note de contenu : - THEORETICAL BACKGROUND : Dust adhesion mechanism - Adhesion forces
- EXPERIMENTAL PROCEDURES : Surface energy of dust particles - Dust size distribution - X-ray diffraction of dust particles - Water contact angles (WCA) of solar mirrors - Adhesion forces calculation
- Table 1 : Surface energy components of dust particles samples
- Table 2 : Water contact angle (WCA) values on solar mirrors samplesDOI : https://doi.org/10.1007/s11998-022-00681-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00681-3.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38851
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 1 (01/2023) . - p. 403-412[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Assessment of the PVC waste addition effect on the concrete mechanical performance / Mourad Boutlikht in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 2 (04/2023)
[article]
Titre : Assessment of the PVC waste addition effect on the concrete mechanical performance Type de document : texte imprimé Auteurs : Mourad Boutlikht, Auteur ; Kamel Hebbache, Auteur ; Abdellah Douadi, Auteur ; Seifeddine Tabchouche, Auteur Année de publication : 2023 Article en page(s) : p. 85-94 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Chlorure de polyvinyle
Contraintes (mécanique)
Granulométrie
Matériaux cimentaires -- Propriétés mécaniques
Matières plastiques -- Recyclage
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : The purpose of this study is to investigate the possibility of using the polyvinyl chloride (PVC) wastes as a concrete manufacturing material without pre-treatment. The purpose is also to contribute for restricting environmental pollution and exploitation of natural resources, through the stabilization and the solidification of PVC wastes in concrete. The aim of this experimental study is to evaluate experimentally the fresh and cured properties of PVC concrete based in comparison with ordinary concrete (OC). This study consists in collecting PVC waste, especially the used PVC pipes rejected in nature, and incorporate it into concrete by substitution of sand with different volume ratios (5%, 10% and 15%). In this study, two different shapes (Fiber and Fine) of PVC were considered. According to the test results, the addition of PVC waste in concrete as a partial replacement for natural sand conducts to decrease the workability of fresh concrete. It was noticed that, the concrete with PVC fiber shows a lower workability comparatively with fine PVC concrete. It was also observed that the PVC fiber improves the concrete compressive strength. It increases with increasing the replacement ratio of PVC waste. However, the increase in the ratio of fine PVC leads to a decrease in compressive strength. The better mechanical performance factor (MPF) was obtained for concrete mixes with high PVC fiber and moderate PVC fine ratios. The collected outcomes would contribute to helpful information for recycling PVC waste in concrete mixes. Note de contenu : - EXPERIMENTAL PROGRAM : Materials - Concrete mixtures
- RESULTS AND DISCUSSION : Workability for various concrete mixtures - Compressive strength - Split tensile strength
- STATISTICAL STUDY : The factorial experimental results - Mathematical models - Analysis of the compressive strength results
- Table 1 : Properties of coarse and fine aggregates
- Table 2 : Sieve analysis of coarse aggregate (8/16)
- Table 3 : Sieve analysis of coarse aggregate (16/25)
- Table 4 : Sieve analysis of fine aggregate (sand)
- Table 5 : Properties of Fine and Fiber PVCTable 6. Sieve analysis of fine PVC
- Table 7 : The used mixes details for a cubic meter of concrete
- Table 8 : Values of weight and slump for various mixtures of concrete
- Table 9 : Compressive strength of concrete mixtures
- Table 10 : Split tensile strength of concrete mixtures
- Table 11 : Fitting results summary
- Table 12 : Variance analysis (ANOVA) for derived modelsDOI : https://doi.org/10.18280/rcma.330203 En ligne : https://www.iieta.org/download/file/fid/96185 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39960
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 33, N° 2 (04/2023) . - p. 85-94[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24246 - Périodique Bibliothèque principale Documentaires Disponible Average-size minerals for UV, Vis & IR protection / Blanca Motos-Pérez in GLOBAL PERSONAL CARE, Vol. 23, N° 1 (01/2022)
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