DOKUMA JÜT KOMPOZİTLERİN ÜRETİM SÜREÇLERİ ve MALZEME KARAKTERİZASYONLARI

Yıl 2020, Cilt: 9 Sayı: 1, 546 - 556, 30.01.2020

Mehmet Fatih Oktem , Meltem Yıldırım

https://doi.org/10.28948/ngumuh.508950

Öz

Composite
materials are materials that are combinations of at least two different
materials or phases. Jute is a plant that can also be utilized as a composite
reinforcing phase to form a composite structure. Recently jute composites are preferred
in many areas because of their low cost, low density, ease of availability and
renewability. Thermoplastic and thermoset resins can be used as matrix phase to
form a jute composite.

 

   In this experimental study; epoxy and
polyester resins were combined with several woven jute plies to form composite
laminate. Plies were treated first with 2.4 liters of deionized water and 240 grams
sodium hydroxide for 4 hours. After this step, 6 liters of deionized water and
10 % diluted acetic acid were applied to woven ply. Before and after these
chemical steps, microstructure changes were observed by the help of an optical
microscope. Resin and hardener of polyester and epoxy polymers were prepared in
specific ratios before applied to jute fibers. These mixtures were applied to
fabric plies by hand lay – up method. After applying polymer mixtures to laminated
fabrics, hot press machine was used at 100 °C, 4 hours and 0.5 ton pressure.

 

   Thickness of the plies was measured before
and after the chemical treatment and also after the curing process and hardness
of the cured laminate was also measured by using Durometer. Microstructural
changes of jute fibers in terms of dimensions were analyzed to see if the
chemical treatment played a role in the dimensional changes. Investigation of
microstructural changes and physical properties of jute fibers before and after
treatment of sodium hydroxide and acetic acid is one of the main focus of this
research. It was observed that thicknesses of jute fabric plies were increased
after treatment by sodium hydroxide and acetic acid treatment. According to the
study, treatment of jute fabric plies with sodium hydroxide has increased their
length while treatment of the same fabrics by acetic acid after the sodium
hydroxide treatment decreased the same dimension.

Anahtar Kelimeler

jute fiber, natural composites

MANUFACTURING PROCESS and MATERIAL CHARACTERIZATION of WOVEN JUTE COMPOSITES

Öz

Kaynakça

• Prof. Dr. Hasan OKUYUCU
• Prof. Dr. Cihangir DURAN