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Foaming behavior and mechanical properties of microcellular PP/SiO2 composites / W. Gong in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 2 (05/2012)
[article]
Titre : Foaming behavior and mechanical properties of microcellular PP/SiO2 composites Type de document : texte imprimé Auteurs : W. Gong, Auteur ; K. J. Liu, Auteur ; C. Zhang, Auteur ; J. H. Zhu, Auteur ; L. He, Auteur Année de publication : 2012 Article en page(s) : p. 181-186 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de silicium
Matériaux hybrides
Mousses plastiques -- Propriétés mécaniques
Nanoparticules
PolypropylèneIndex. décimale : 668.9 Polymères Résumé : Microcellular foamed polypropylene (PP)/SiO2composites were prepared by using micro-SiO2and nano-SiO2particles. The effects of the particle size of SiO2on the foaming behavior and mechanical properties of the composites were studied based on heterogeneous nucleation theory. The results showed that the silica facilitated the cell nucleation to some extent. The average cell size of 16.3 µm and the cell density of 4.46 × 107cells/cm3were achieved for the composite foam at the silica content of 4 wt.%. The plastic deformation of the PP was strongly constrained due to the presence of the nano-silica. The tensile and impact strength of the nano-SiO2composite foam are larger than those of the micro-SiO2composite foam due to the high crack propagation resistance in the microcellular PP/nano-SiO2composite. Note de contenu : - EXPERIMENT : Materials - Preparation of PP/SiO2 masterbatch - Preparation of microcellular PP composites - Characterisation - Mechanical measurement
- RESULTS AND DISCUSSION : Cell nucleation behavior of PP/SiO2 composites - Foaming behavior of PP/SiO2 composite - Effect of specific surface area on the foaming behavior of microcellular PP/SiO2 composite - Effect of the crystallization behavior on the foaming behavior of microcellular PP/SiO2 composite - Effect of SiO2 particle size on the cell structure of microcellular PP/SiO2 composite - Effect of SiO2 particle size on the mechanical properties in microcellular PP/SiO2 compositeDOI : 10.3139/217.2458 En ligne : https://drive.google.com/file/d/19IHnKv4qmPGhf7pVIZhPWqe8Ad1voSRa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14593
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 2 (05/2012) . - p. 181-186[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13846 - Périodique Bibliothèque principale Documentaires Disponible Formi / Claire Pham in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 910 (03/2014)
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Titre : Formi Type de document : texte imprimé Auteurs : Claire Pham, Auteur Année de publication : 2014 Article en page(s) : p. 66 Langues : Français (fre) Catégories : Composites à fibres végétales
Composites à fibres végétales -- Propriétés mécaniques
Fibres cellulosiques
PolypropylèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Biocomposite. Développé par le papetier UPM, ce polypropylène enrichi à la fibre de bois est notamment utilisé pour des enceintes et pour l'ameublement. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20700
in PLASTIQUES & CAOUTCHOUCS MAGAZINE > N° 910 (03/2014) . - p. 66[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16056 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Formulation freedom : A new amine-functional dimer technology creates formulation freedom for high-end polyamide adhesives Type de document : texte imprimé Auteurs : Angela Smits, Auteur ; Hans Ridderikhoff, Auteur Année de publication : 2011 Article en page(s) : p. 2931 Langues : Américain (ame) Catégories : Acides gras
Adhésion
Biomatériaux
Cisaillement (mécanique)
DiamineUne diamine est un type de polyamine contenant exactement deux groupes amine. Les diamines sont principalement utilisées comme monomères pour synthétiser des polyamides, des polyimides et des polyurées. La principale diamine produite est le 1,6-diaminohexane, précurseur du Nylon 6-6, suivie de l'éthylènediamine1. L'hydrazine (H2NNH2) n'est en général pas considérée comme une diamine puisque ce n'est ni une amine (pas de carbone), ni une dibase.
Dimère, Acide
Formulation (Génie chimique)
Huiles et graisses
Polyamide 66
Polypropylène
Terpolymère acrylonitrile butadiène styrèneIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Dimerized fatty acids have been used for many years in polyamides, polyesters, epoxy resins and amine curatives. They are obtained through the conversion of unsaturated fatty acids (from natural oil and fat) by a combination of pressure, temperature and catalysis, followed by purification processes.
Starting from the C18 fatty acids that nature typically provides, the dimer acid is a molecule with 36 carbon atoms, which makes it the longest dioic acid available. The benefits that the hydrocarbon character and non-crystallinity of these C36 diacids add to coatings and adhesives are mainly related to the low glass-transition temperature (Tg) and their hydrophobic nature. These properties induce flexibility, hydrolytic resistance, thermo-oxidative resistance, moisture repellency and adhesion to a wide range of substrates.
For several years, dimer fatty diols and a range of polyester polyol derivatives of dimerized fatty acids have been available for use in various polyurethane applications to enhance durability, flexibility, and hydrophobicity.* New bio-based, amine-functional building blocks have been developed that extend the range of acid- and hydroxyl-functional fatty dimers and derived polyesters (see Figure 1).** This new technology provides benefits in many applications.Note de contenu : - FIGURES : 1. Extended range of dimer functionalities - 2. Improved moisture repellency - 3. Lap shear adhesion to ABS - 4. Lap shear adhesion to nylon - 5. Lap shear adhesion to PP
- TABLES : 1. Thermal properties and shore D hardness - 2. Comparison of several diaminesEn ligne : http://www.adhesivesmag.com/articles/90826-formulation-freedom Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25702
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 18, N° 11 (11/2011) . - p. 2931[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13435 - Périodique Bibliothèque principale Documentaires Disponible Fracture toughness of PP/EPDM/nano-ternary composites : the role of distribution of inorganic particles / L. Gong in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 2 (05/2016)
[article]
Titre : Fracture toughness of PP/EPDM/nano-ternary composites : the role of distribution of inorganic particles Type de document : texte imprimé Auteurs : L. Gong, Auteur ; S.-H. Chen, Auteur ; W.-M. Hou, Auteur ; B. Yin, Auteur ; L.-P. Li, Auteur ; M.-B. Yang, Auteur Année de publication : 2016 Article en page(s) : p. 224-232 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères -- propriétés mécaniques
Angle de contact
Carbonate de calciumLe carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole.
C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots.
Dioxyde de silicium
Ethylène-propylène-diène monomère
Nanoparticules
Polypropylène
Résistance au chocsIndex. décimale : 668.4 Plastiques, vinyles Résumé : The influence of the distribution of the inorganic particles on the toughness of the PP/EPDM/nano-ternary composites was investigated. Four morphologies for PP/EPDM/nano-ternary composites were obtained by means of adjusting the surface tension of inorganic particles (nano-CaCO3, hydrophobic nano-SiO2 and hydrophilic nano-SiO2) and the compounding sequence (one-step extrusion and two-step extrusion). Morphological observation revealed that the segregated dispersion morphology was formed in the PP/EPDM/CaCO3 composite. For the PP/EPDM/R974 (hydrophobic nano-SiO2) composite, R974 particles were dispersed at the interface between the PP matrix and EPDM dispersed phase. A200 particles (hydrophilic nano-SiO2) continuously dispersed between PP and EPDM phase for PP/EPDM/A200 composites prepared by one-step, while were present in EPDM dispersed phase for the two-step PP/EPDM/A200 composites. The dependence of the toughness on the phase morphology of the components, especially the distribution of nanoparticles, was studied systematically. The impact strength of one-step PP/EPDM/A200 composites was pronouncedly enhanced, increasing 552 % compared to pure PP. Compared with the other three composites, the one-step PP/EPDM/A200 composites exhibits better effect of preventing crack propagation and far higher fracture energies. It is attributed to the A200 particles continuously dispersed between EPDM phase and matrix, which makes EPDM particles have better compatibility with the PP matrix and the overlapping of the stress field with A200 particles. Note de contenu : - EXPERIMENTAL SECTION : Materials - Sample preparation - Scanning electron microscopy (SEM) - Izod impact strength testing - Contact angle measurement - Analysis of the damage zone around the surviving crack tip - Fracture toughness measurements
- RESULTS AND DISCUSSION : The control of morphology for PP/EPDM/nanoternary composites - Izod impact strength - Investigation of the fracture and toughening mechanisms - The role of nano-particles distribution on the impact toughnessDOI : 10.3139/217.3174 En ligne : https://drive.google.com/file/d/1wEchFcOOTuehwoS7fLqtGW5HFvEKG_-v/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26180
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 2 (05/2016) . - p. 224-232[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17979 - Périodique Bibliothèque principale Documentaires Disponible From fishing net to particle foam / Hans Axel Kristensen in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)
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Titre : From fishing net to particle foam : expanded polypropylene from maritime plastic waste Type de document : texte imprimé Auteurs : Hans Axel Kristensen, Auteur ; Jens Grunwald, Auteur ; Helge Lüsebrink, Auteur Année de publication : 2020 Article en page(s) : p. 14-17 Langues : Anglais (eng) Catégories : Filets de pêche -- Recyclage
Matières plastiques -- Recyclage
Polymères expansés
Polypropylène
Recyclage mécaniqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : A large part of the plastic waste in the sea comes from the maritime industry. The Danish company Plastix recycles old fishing nets and ropes. The granules produced are used by JSP International, among others, to manufacture expanded polypropylene (EPP). This results in a 7 % reduction in CO2 emissions compared to virgin material. In order to obtain the same properties as virgin material, the recyclates must meet strict requirements. This requires a precise analysis of the waste in the recycling process and strict quality control. Note de contenu : - Extended producer responsibility
- Recycling of fishing nets
- Figure : 11 % of the plastic waste in the sea comes from the maritime industry. For the recycling of old fishing nets and ropes, accurate sorting is very important
- Fig. 1 : Over 900 different types of nets and ropes are stored in the Plastix database. The “Wall of Fame” of the company shows an extract
- Fig. 2 : Mechanical recycling turns the maritime waste back into high-quality plastic granulate
- Fig. 3 : Before delivery, the recyclates are analyzed and subjected to quality control
- Fig. 4 : Feasibility study for the Urban Arrow Shorty cargo bicycle : the transport container was made entirely from Arpro 35 Ocean particle foamEn ligne : https://drive.google.com/file/d/1LqK15MQee3DINx_7YUrTqHti7TL7Q8_I/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34821
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 14-17[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22367 - Périodique Bibliothèque principale Documentaires Disponible Function and color made to measure / Jan Stadermann in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 9 (09/2013)
PermalinkFunctional fibers based on recycled PP from home textiles / Regina Malgueiro in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 3 (09/2022)
PermalinkFusion bonding of thermoplastic composites and metals / Martina Hümbert in JEC COMPOSITES MAGAZINE, N° 103 (03/2016)
PermalinkFuture materials for lightweight construction and design / Christian Trassl in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 2 (02/2014)
PermalinkUne gamme flexible de semi-produits GMT / Laurence Caramaro in TEXTILES A USAGES TECHNIQUES (TUT), N° 60 (06-07-08/2006)
PermalinkA gas-sensor-based measurement setup for inline quality and process control in polymer extrusion / Michael Aigner in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 4 (08/2014)
PermalinkPermalinkGiving pressure greater weight / Klaus Straka in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 8 (08/2015)
PermalinkGros plan sur les TPE / Florence Bruno in CAOUTCHOUCS & PLASTIQUES, N° 814 (06-07/2003)
PermalinkHandbook of polypropylene and polypropylene composites / Harutun G. Karian / New York [United States] : Marcel Dekker, Inc. (2003)
PermalinkHigh flowability cuts costs / Ricardo Calumby in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 7 (07/2013)
PermalinkHigh-performance natural fibre tape and spread tow fabric / Mahmudul Akonda in JEC COMPOSITES MAGAZINE, N° 72 (04-05/2012)
PermalinkHigh-performance polypropylene honeycomb boards at minimal cost / Jochen Pflug in JEC COMPOSITES MAGAZINE, N° 119 (03/2018)
PermalinkHigh performance UV curable PSAs offer high production speeds / James R. Erickson in ADHESIVES AGE, Vol. 41, N° 9 (09/1998)
PermalinkHigh-pressure preform foam blow molding / L. H. Mark in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 5 (11/2017)
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