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Achieving flame-retardant properties without red phosphorus in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 19 Titre : Achieving flame-retardant properties without red phosphorus Type de document : texte imprimé Année de publication : 2019 Article en page(s) : p. 19 Langues : Anglais (eng) Catégories : Ignifugeants -- Suppression ou remplacement Polyamide 6 Polyamide 66 Polymères -- Additifs Produits chimiques -- Suppression ou remplacement Index. décimale : 667.9 Revêtements et enduits Résumé : Lanxess reports on its new range of polyamide 6 and 66 compounds with halogen-free flame retardant properties. Note de contenu : - Potential for light colours, no contact corrosion - Improved tracking resistance - Better flame-retardant En ligne : https://drive.google.com/file/d/1JqJX03ZMM1sZWq6oOkyOo2OpA1EIu2eK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32604 [article]

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Planned EU ruling may regulate tattoo inks for first time to avoid health risks / Diana Yordanova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 22-23 Titre : Planned EU ruling may regulate tattoo inks for first time to avoid health risks Type de document : texte imprimé Auteurs : Diana Yordanova, Auteur ; Keith Nuthall, Auteur Année de publication : 2019 Article en page(s) : p. 22-23 Langues : Anglais (eng) Catégories : Consommateurs -- Protection Droit européen -- Législation Encre Evaluation du risque Règlements de sécurité Risques pour la santé Tatouage Index. décimale : 667.4 Encres Résumé : Body artists in Europe may have to reconsider the pigments that they use in future, with the European Union (EU) drafting new rules that could regulate what chemicals can be used in tattoo inks. While today 12 out of every 100 Europeans are tattooed or have some sort of permanent cosmetic treatment, experts are increasingly concerned that these skin colouring agents may contain hazardous substances, known or suspected to have adverse health effects causing cancer, allergies or mutations. As a result, the EU executive, the European Commission has asked the European Chemicals Agency (ECHA) to investigate, evaluating whether EU consumers' health is actually under risk from tattoo insk and advising on whether EU legislation is necessary. "The EU is not (considering) banning tattoo inks or tattooing but aims to ensure that all substances present in tattoo inks are safe for citizens", a Commission spokesperson underlined. Note de contenu : - Some reformulation will be required - Costs may rise - Health threats from tattooing practices En ligne : https://drive.google.com/file/d/1Ab85WXq5LIqSNO7ESfGcZ-2Ejk8iLkOJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32605 [article]

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Production of fine polymer powders for additive manufacturing / Ergün Altin in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 26-27 Titre : Production of fine polymer powders for additive manufacturing Type de document : texte imprimé Auteurs : Ergün Altin, Auteur ; Steffen Sander, Auteur Année de publication : 2019 Article en page(s) : p. 26-27 Langues : Anglais (eng) Catégories : Broyage cryogénique Broyeurs Impression tridimensionnelle Polyamide 6 Polymères Poudres Production Index. décimale : 668.9 Polymères Résumé : Many industrial sectors are focusing increasingly on the additive manufacturing of components made of metal or polymers. Selective Laser Sintering (SLS) constitutes an important process for the 3D printing of polymers. Fine polymer powders are sintered, thereby, in a powder bed by means of laser to form three-dimensional objects. This printing process, however, calls for polymer powders with a particle size of around d90. 100pm. Among other methods, cryogenic comminution is applied for the production of such fine powders. In this case, polymer granules are embrittled by means of liquid nitrogen (LN2) and then ground in a pin mill. The specific consumption of liquid nitrogen is a major cost factor. Hosokawa Alpine AG offers solutions to reduce the specific consumption. Assuming an efficient classifier and mill in circuit, the product specifications can also be guaranteed and the operating costs mininnised. Note de contenu : - Contraplex wide-chamber mill CW 250 II : the right choice for cryogenic size reduction - Optimised screw geometry guarantees efficient dosing of feed material - Adaptation to the pin discs - Intelligent system concept reduces operating costs - Fig. 1 : Contraplex wide-chamber Mill CW 250II - Fig. 2 : I&C flow chart of cryogenic grinding with the CW 250 II - Fig. 3 : DEM simulation of product discharge from a screw cooler - Fig. 4 : Influence of the number of pins of the fines portion and fines throughput - Fig. 5 : Optimum operating costs in grinding-classifying circuit exemplified by PA-6 - Fig. 6 : Different grindability of TPU and PA-6 for different feed rates En ligne : https://drive.google.com/file/d/1xkJLsyPX9xFSsEL35OaRVHvp21Ldh64v/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32606 [article]

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Sensor coatings become even more sophisticated / Sarah Gibbons in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 46-47 Titre : Sensor coatings become even more sophisticated Type de document : texte imprimé Auteurs : Sarah Gibbons, Auteur Année de publication : 2019 Article en page(s) : p. 46-47 Langues : Anglais (eng) Catégories : Capteurs (technologie) Matériaux intelligents Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : The author reports on smart coatings that act as sensors allowing interaction between people and machines. Smart coatings are being applied to objects, ranging from fabrics to walls, pipelines and medical devices, to act as sensors and facilitate interaction between people and machines - and potentially save huge sums of money in repairs bills. These technologies are developing fast and offer functionality that extends way beyond smart coatings that can detect cracks, scratches and abrasions and heal themselves - as useful as those qualities are. Note de contenu : - Smart clothing - Structural health monitoring - Spray-coated pressure sensor - Fig. 1 : Demonstrations how a sensor could be placed inside a shoe to measure foot pressure - Fig. 2 : Test an elbow sleeve outfitted with one of their novel sensors - Fig. 3 : Researchers working on wall++ create a cross-hatched pattern to form a grid of diamonds to ensure that any touch of the wall is captured by the sensory system. Electrodes are connected to a sensor board within the wall cavity and the wall is then painted En ligne : https://drive.google.com/file/d/1YQ8VUyknXn-mxTeFNDYFryiK6kppb_al/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32607 [article]

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The formation of polyester-melamine/urethane coatings / Nadezda Denisova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 48-50 Titre : The formation of polyester-melamine/urethane coatings Type de document : texte imprimé Auteurs : Nadezda Denisova, Auteur ; Natalija B. Skopintseva, Auteur ; Daria Afanaseva, Auteur ; Evgenii Indeikin, Auteur Année de publication : 2019 Article en page(s) : p. 48-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Coil coatings Copolymère mélamine-formaldéhyde Diisocyanate d'hexaméthylène Méthylation La méthylation est l'attache ou la substitution d'un groupement méthyle sur un substrat. La déméthylation est au contraire, la suppression d'un groupe méthyle sur un substrat. Réticulation (polymérisation) Revêtements -- Analyse Revêtements -- Propriétés mécaniques Revêtements -- Propriétés physiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : One of the cost-effective ways to significantly influence the coating formation process and the performance of polyester coatings is to use a cross-linking agent containing an isocyanate. Methylated melamine-formaldehyde with a high degree of alkylation (HMMM) and methyl ethyl ketoxime-blocked hexamethylene diisocyanate (HDI) were used for polyester resin cross-linking. The influence of cross-lin king agents on coating performance and characteristics was studied using Small Amplitude Oscillatory Shear Rheomenty (SAOS), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques. The cross-linking degree of the polyester system containing the mixture of HMMM and HDI was shown to be significantly lower than that of the systems where only one of the cross-linking agents was used. High loss modulus values G" in the system with HMMM as compared to the system with HDI can be explained by a less dense three-dimensional network structure. With the decrease of HMMM and HDI the formation of three-dimensional network starts at a higher temperature. At the same time, when only the hardener content is reduced it leads to the decrease of the cross-linking degree. Note de contenu : - Table 1 : System ingredients - Table 2 : Cross-linking reaction start temperatures for the compositions studies - Table 3 : Cross-link concentrations for the system - Table 4 : Physical and mechanical properties of the films, PTM = 224°C, 60 sec - Fig. 1 : Storage modulus (G') and loss modulus (G") during coating curing - Fig. 2 : TGA - analysis a) Sample 1, b) Sample 2 - Fig. 3 : Storage modulus (G') and loss modulus (G") during coating curing - Fig. 4 : The influence of curing temperature on residual heat of reaction - Fig. 5 : The influence of curing temperature on the Tg En ligne : https://drive.google.com/file/d/1BasgjNlsCHEPzXR6seqIu44IjZbJI9pu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32608 [article]

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Application of nanometre materials in modifying acrylate latex / Yilu Gong in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 51-53 Titre : Application of nanometre materials in modifying acrylate latex Type de document : texte imprimé Auteurs : Yilu Gong, Auteur ; Tantan Shao, Auteur ; Xin Zhang, Auteur ; Dawei Chen, Auteur ; Zhibin Cai, Auteur ; Lijun Chen, Auteur Année de publication : 2019 Article en page(s) : p. 51-53 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane Latex Nanoparticules Oxyde de silicium Oxyde de zinc Polyacrylates Polymères en émulsion Index. décimale : 667.9 Revêtements et enduits Résumé : Acrylate latex is widely used in coating film forming agents, textile printing and dyeing adhesives, daily chemical products, medical polymers etc. However, the drawbacks of the acytate, such as poor water resistance, easy brittleness at low temperature and losing adhesion at high temperature have limited its further application. Thus, it is necessary to modify the latex to widen its application. Nowadays, more and more attention has been focused on nanometre-acrylate composite materials, such as silicon dioxide, titanium dioxide, alumina, zinc oxide etc, which have been used in emulsion polymerisation to improve the properties of acrylate latex because of the particular properties of the nanometer materials. In this paper, the modification of acrylate latex with nanometer materials is reviewed in detail, which can bring some inspiration to modification of the acrylate latex. Note de contenu : - Single component nanomaterials - Two-component nano-composite system - organic-inorganic nanocomposite system En ligne : https://drive.google.com/file/d/1ygMoEZr9RkH6AByTX6ZxgTq3BbG_rBOJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32609 [article]

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Polymer paint colour journal - PPCJ Vol. 209, N° 4651 URL