| Titre : |
Bioplastics with halogen-free flame retardants : Foamed boards and foamed injection molded parts made from cellulose acetate with a halogen-free flame retardant system and environmentally friendly blowing agents |
| Type de document : |
texte imprimé |
| Auteurs : |
Robert Breuer, Auteur ; Yuxiao Zhang, Auteur ; Christian Hopmann, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 31-36 |
| Langues : |
Anglais (eng) |
| Catégories : |
Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose.
Agents de gonflement
Bioplastiques
Essais (technologie)
Essais de comportement au feu
Ignifugeants -- Suppression ou remplacement
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Isolation thermique
Mousses plastiques
Mousses plastiques -- Extrusion
Mousses plastiques -- Moulage par injection
Polymères expansés
Polystyrène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Foamed polystyrene boards (XPS) have been used for generations in thermal insulation applications, e.g. for buildings. Due to its comparable mechanical and thermal properties, bio-based cellulose acetate (CA) represents a promising, sustainable alternative which is also an interesting material for technical components due to its heat resistance. However, producing such parts by foam extrusion or foam injection molding with halogen-free flame retardant systems and environmentally friendly blowing agents is a challenge. |
| Note de contenu : |
- Materials used
- Equipmentfor foam extrusion trials
- Equipment for foam injection molding trials
- Foam extrusion of CA compounds with flame retardant system
- Foam injection molding trials
- Resulting density of the extruded foam boards
- Fire behavior of the extruded foam boards
- Injection pressures and foam structures of the injection-molded test specimens
- Fire behavior of the injection molded test specimens
- Figure : Samples of foamed cellulose acetate with halogen-free flame retardant system after the flammability test
- Fig. 1 : Material composition of the tested CA compounds and the polystyrene reference
- Fig. 2 : The foam board extrusion line used within the project of the IKV
- Fig. 3 : ProFoam system for introducing the blowing agent into the cellulose acetate
- Fig. 4 : Foam board densities of the CA compounds investigated in foam extrusion
- Fig. 5 : Exemplary foam samples after the flammability test : if the measuring mark is not reached, the test is passed. The sample on the right did not pass the test
- Fig. 6 : Measured process pressures in foam injection molding
- Fig. 7 : Foam structure of th einjection-molded components : the microscopic images show different homogeneity in cell size and cell distribution depending on the blowing agent and compound formulation |
| En ligne : |
https://drive.google.com/file/d/1gCSZicOJ1-1a-WJW4Udxs5dc4oVSXLor/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31820 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 1-2 (01-02/2019) . - p. 31-36
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