Effect of acids salts and water on natural composite materials
Zahra Khalid Hamdan, Fadhel abbas abdalla, Zaineb waired Metteb
Abstract
The focus of this study was to study the effect of Aceic acid (CH3COOH), salt solution (Nacl) and water on pure polyester and natural composite materials. Three samples were used, the first consisted of pure polyester, sawdust-polyster and peels walnut-polyster. The samples were immersed in acid, salt and water for 3 and 6 days and then that studiedthe mechanical properties of the materials (compersion stress and hardness) before and after Immersion of samples. It was observed that Compression stress decreased for all samples with different rates after immersion of the samples in each of the acid, salt and water and the effect of acid was the strongest. As for the hardness test, it was found that when the samples were immersed in the salt the value of hardness improved, While the hardness values of the samples that were in acid and water decreased very slightly