Verarbeitung von langfaserverstärkten Thermoplasten im direkten Plastifizier-, Pressverfahren

The direct strand-deposition process which is capable to process thermoplastic matrix materials in the form of powder, chopped glass-fibres and additives in a single-screw plastification unit is examined in this work. By using the material combination glass/polypropylene, the influence of the process parameters on the properties of the long-fibre reinforced press masses is characterised. In order to guarantee a fibre-friendly processing during plastification and to achieve a complete fibre debundling and a good fibre filament distribution, special attention must be paid to the right starting material and to the right machinery. Requirements are discussed. The influence of the resulting structure of reinforcement (fibre content, resulting fibre length and fibre length distribution, fibre debundling and filament distribution, fibre orientation) on the achievable mechanical properties are estimated by using simple equations. Trials are carried out to characterise the influence of the process parameters of the plastification unit on the reinforcement structure. Methods are developed to enable a precise measurement of every form of reinforcement. Mechanical properties that are determined in short-tensile and penetration testing are showing a dependency on the properties of the resulting structure of reinforcement. Measured properties of the compression moulded products are in the same range as the ones of glass-mat reinforced thermoplastics.

Grantor dc:publisher

[Mainz]

Year dc:date

2001

Author dc:creator

• Brast, Karsten

Contributors dc:contributor

• Michaeli, Walter

• info:eu-repo/classification/ddc/620
• Ingenieurwissenschaften
• Polypropylen
• Faserverstärkter Thermoplast
• Glasfaser
• Langfaser
• Plastifizieren
• Fließpressen
• Verarbeitung
• Einschneckenextruder
• Pressen

Statement dc:rights

• info:eu-repo/semantics/openAccess

Language dc:language

ger

Identifier

https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118748%22

OAI record oai:identifier

https://publications.rwth-aachen.de/oai2d?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Apublications.rwth-aachen.de%3A56660