Hemp reinforced composites: surface treatment, manufacturing method and fabric type effects

Hemp mats and weaved fabrics were used as received and after surface treatment as reinforcement for composites. Mercerization and amino silane surface treatments improved fibre/matrix adhesion and, as results, the mechanical properties of the composites were also improved. However, if surface treatm...

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Bibliographic Details
Main Authors: Cicala, G, Cristaldi, G, Recca, G
Format: Conference Proceeding
Language:English
Subjects:
ADHESION
Architecture
CARBON FIBERS
COMPOSITE MATERIALS
Degradation
Fabrics
Fiber-matrix adhesion
FIBERS
Fibre
Fibres
Hemp
HYDRIDES
HYDROGEN COMPOUNDS
Lay up
MATERIALS
MATERIALS SCIENCE
Mathematical models
Mats
MECHANICAL PROPERTIES
Mercerization
MICROSCOPY
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
REINFORCED MATERIALS
Reinforcement
Resin transfer moulding
RESINS
SILANES
SILICON COMPOUNDS
Surface treatment
SURFACE TREATMENTS
TENSILE PROPERTIES
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Summary:Hemp mats and weaved fabrics were used as received and after surface treatment as reinforcement for composites. Mercerization and amino silane surface treatments improved fibre/matrix adhesion and, as results, the mechanical properties of the composites were also improved. However, if surface treatment was too severe degradation of the mechanical properties of the single fibre was observed and this resulted in a reinforcing efficiency loss. Weaved fabrics obtained from twisted fibres in unidirectional and 0/90 architecture were used. The use of weaved fabrics lead to high improvements of composite mechanical properties despite the absence of fibre's surface treatment. The specimens manufactured by LRTM (Light Resin Transfer Moulding) showed enhanced mechanical properties compared to specimens made by hand lay up. Mechanical models were also used to predict the mechanical properties of the composites.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3455560