Malaysian Journal of Analytical Sciences Vol 18 No 2 (2014): 478 - 484

 

 

 

TOUGHENING OF EPOXY BY SILANE-TREATED NANOTITANIUM DIOXIDE

 

(Penguatan Epoksi oleh Silana Terawat Nanotitanium Dioksida)

 

Phasapan Sanemuang and Jantrawan Pumchusak*

 

Department of Industrial Chemistry,

Faculty of Science,

Chiang Mai University, 50200 Chiang Mai, Thailand

 

*Corresponding author: jantrawan@gmail.com

 

 

Abstract

In this research, treated titanium dioxide in the contents of 0.1-0.5 wt % was applied into epoxy resin in order to toughen it. Vibracell ultrasonic with various electric power and times was used to disperse the particles successfully.  It was found that the epoxy nanocomposites with 0.1 wt % of silane-treated nano titanium dioxide provided the highest impact strength and fracture toughness (K_IC) of 69.4 J/m. and 2.18 MPa.m^1/2, respectively, while, those properties of the neat epoxy were 41.3 J/m. and 1.16 MPa.m^1/2. However, the impact strength and fracture toughness of nanocomposites decreased by about 50 % and 8 %, respectively by further increasing amount of treated Nano titanium dioxide particles 0.2 to 0.5 wt %.

 

Keywords: epoxy, treated nanotitanium dioxide, nanocomposite, toughening

 

Abstrak

Dalam kajian ini, sebanyak 0.1 - 0.5wt % titanium dioksida terawat telah dimasukkan ke dalam resin epoksi sebagai penguat. Alat vibracell ultrasonic telah digunakan untuk melarutkan titanium dioksida terawat ke dalam larutan etanol/air dengan memvariasikan masa(t) dan unit kuasa eletrik(watt) yang digunakan. Didapati bahawa nanokomposit epoksi dengan 0.1wt % silane terawat nano titanium dioksida menunjukkan kekuatan impak dan kekuatan patahan (K_IC) yang paling tinggi iaitu 69.4 J/m dan 2.18 MPa.m^1/2. Epoksi tulen pula adalah masing-masing 41.3 J/m dan 1.16 MPa.m^1/2. Namun, kekuatan impak dan kekuatan patahan nanokomposit tersebut menurun sebanyak 50 % dan 8 %, dengan penambahan kandungan partikel nano titanium dioksida terawat daripada 0.2 hingga 0.5 bt %.

Kata kunci: epoksi, nanotitanium dioksida terawat, nanokomposit, penguat

 

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