Comparative studies on physico-mechanical properties of composite materials of low density polyethylene and raw/calcined kaolin

Abstract

Raw and calcined kaolin filler Composite materials Physico-mechanical properties a b s t r a c tThe paper describes the preparation of the composite materials of low density polyethylene (LDPE) as the base mixed separately with raw kaolin and the same calcined at 800 • C under the same variation in weight percentage using single-screw extruder and a mixing machine operated at a temperature between 190 and 200 • C. Some of the mechanical and physical properties such as Young's modulus, elongation at break, shore hardness and water absorption were determined at different weight fractions of filler (0, 2, 7, 10 and 15%). It was found that the addition of filler increases the mechanical properties. Absorption test was done in water at different immersion times for different composites. The degree of water absorption of composite materials was found to decrease with increasing wt% of kaolin filler (0-15%) according to Fick's law. Calcined kaolin produces better mechanical properties than raw kaolin.

Evaluation of the Performance of Helmet Prototypes Fabricated from Acrylonitrile Butadiene Styrene Composites Filled with Natural Resource

“…A similar observation was also obtained when the composite material of low-density polyethylene (LDPE) as the base was mixed with raw kaolin [35]. From the relevant study, it was found that increasing the filler content from 5% to 15% increases their composite strength from 0.3 to 0.5 kJ/m 2 .…”

Barrier Corrosion Protection Properties of Metakaolin Clay-Kadilux Epoxy Coatings on Galvanized Steel

“…Abdul Majeed and Sabar [19] showed that there is general increase in absorption rate with increase in kaolin content in PVC/kaolinite composites. Amit [20] showed the difference in water absorption ability between calcinated kaolin and row kaolin on their study of physicomechanical properties of composite materials of low-density polyethylene and raw/calcined kaolin. According to their work, calcinated kaolin showed low water absorption than kaolin [12].…”

The Investigation of Strength and Water Absorption of Self-Compacting Concrete by Inclusion of Metakaolin and Calcined Kaolin

“…Calcined kaolin (CK) is an another widely used material after 1990's to improve the properties of concrete [15,16]. CK is used as cement replacement material for improving properties of SCCs at different replacement levels.…”

“…The increase in compressive strength of concrete is due to both microfilling and hydration of mineral admixture with Portlandite(13,14). Control mixtures, SCCs without MK or CK, gain strength by hydration of PC, however MK or CK used SCCs gain strength by both hydration of PC and pozzolanic reactions of MK or CK(14,15).…”