Author : Adnan Abd, Abeer
Study the Effect of kaolin on Secondary bonds, Porosity, Mechanical properties and Thermal Stability of Polyester Composites
journal of kerbala university,
Volume 12, Issue 1, Pages 79-90
Unsaturated polyester resin with fillers of kaolin samples were prepared by cast molding method for polyester with filler volume fractions (5%, 10%, 15% and 20%). The thermal conductivity constant, hardness, compression strength, porosity and density were studied. This experimental investigation is aimed at assessing the performance of polymeric insulators in high temperatures applications. Shore hardness tests were used to measure the hardness. Fourier transform infrared spectroscopy (FTIR) to study the bonds which enhanced the insulating properties of polyester material compounded with filler. Polymer composites Exhibits a new UV- visible absorption band at a wavelength range (200 -375) nm, which is attributed to interchain interaction .The thermal conductivity constant, hardness decrease with filler content increase. The experimental results showed that the (20% kaolin) sample has the minimum value of thermal conductivity. The porosity and density increase with filler content increase therefore the thermal isolation increase. On the other hand (5% kaolin) sample give the maximum value of compression strength. The glass transition temperature, melting point and degree of crystallization decrease by adding kaolin.