Investigation on the Effect of Sample Preparation on the Performance of Thermochromic Liquid Crystal

Muhammad Fitri Mohd Zulkeple; Abd Rahim Abu Talib; Ezanee Gires; Mohamed Thariq Hameed Sultan

Authors

Muhammad Fitri Mohd Zulkeple Aerodynamic, Heat Transfer & Propulsion Group (AHTP), Department of Aerospace Engineering, Universiti Putra Malaysia,43400 Serdang, Selangor, Malaysia
Abd Rahim Abu Talib Aerodynamic, Heat Transfer & Propulsion Group (AHTP), Department of Aerospace Engineering, Universiti Putra Malaysia,43400 Serdang, Selangor, Malaysia
Ezanee Gires Aerodynamic, Heat Transfer & Propulsion Group (AHTP), Department of Aerospace Engineering, Universiti Putra Malaysia,43400 Serdang, Selangor, Malaysia
Mohamed Thariq Hameed Sultan Aerospace Malaysia Research Centre (AMRC), Faculty of Engineering, Universiti Putra Malaysia,43400 Serdang, Selangor, Malaysia

Keywords:

Thermochromic Liquid Crystal , Thermography , Temperature Sensing

Abstract

This paper discussed the effect of sample mixture preparation on the performance of Thermochromic Liquid Crystals (TLCs)in termsof maximum intensity, hue sensitivity and aging effect. Three type of TLC mixtures were prepared; (A) solely TLC aqueous slurry solution, (B) TLC aqueous slurry solution and aqueous binder with a ratio of mixing of 3:1, and (C) TLC aqueous slurry solution,an aqueous binder, and tap water with a ratio of 5:1:6. The result obtainedshowsthat sample A givesa higher maximum intensity values comparedto the others. Furthermore, sample A with only TLC solution hasbetter hue sensitivity at the red colorregion. As it goes to the greencolorregion, thesampleC, has thehighestsensitivity due to the anchoring force present among the molecules. In term of resistance to aging effect, sampleB and C that been mixed with other composition arehavingbetter resistance towardsthe effect as it been provided with extra shield resulted from the microencapsulation with aqueous binder. To sum up the result, sample mixing method hassignificant effect on the performance of the TLCs. The usage of solely of TLCwithout another additional compoundmay give higher maximum intensity and sensitivity on certain region but it will have low resistance towards the aging effect.