Post on 09-Nov-2015
description
COMPOSITE NN EPOXY
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Callister, W. D., & Rethwisch, D. G. (2007). Materials science and engineering: an introduction, New York: Wiley.
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Nature fiber
Nature fiber
Nature fiber
Plant fibres are a renewable raw material and their availability is more or less unlimited. When natural reinforced plastics were subjected, at the end of their life cycle, to a combustion process or landfill, the released amount of CO2 of the fibres is neutral with respect to the assimilated amount during there growth. The abrasive nature of natural fibres is much lower compared to that of glass-fibres, which leads to advantages with regard to technical, material recycling or process of composite materials in general. Natural fibre reinforced plastics by using biodegradable polymers as matrix are the most environmental friendly materials which can be composted at the end of their life cycle. Unfortunately, the overall physical properties of those composites are far away from glass-fibre reinforced thermoplastics. Further, a balance between life performance and biodegradation has to be developed
Nature fiber
Nature fiber
Nature fiber
Cellulose
- Bn kt tinh - Mch thng
Nature fiber
Hemi-cellulose
- Mw nh - Mch nhnh
Lignin
- Cu trc phc tp - Khng kt tinh - C l rt thp
Nature fiber
Nature fiber
Physical treatment Corona treatment
Alkali treatment
Nature fiber
Chemical treatment
Weak boundary layers coupling agents eliminate weak boundary layers, Deformable layers coupling agents produce a tough, flexible layer, Restrained layers coupling agents develop a highly crosslinked interphase region, with a modulus intermediate between that of substrate and of the polymer, Wettability coupling agents improve the wetting between polymer and substrate (critical surface tension factor), Chemical bonding coupling agents form covalent bonds with both materials, and Acidbase effect coupling agents alter acidity of substrate surface.
Nature fiber
Chemical treatment
Impregnation of fibres Chemical coupling Acetylation of natural fibres