Using wollastonite nanomaterials in gypsum-wood composites

In this study, the effect of wollastonite on mechanical, physical, and morphological properties composites made sesame stem (Sesamum indicum L.) gypsum was investigated. The mixing ratio as a lignocellulosic material with at three levels (10:90, 20:80, 30:70) (0%, 5%, 10%, based dry weight cement) were considered variables. Fire resistance (weight loss) tested according to ISO 11925-3 DIN EN 634-1 two specifications for mechanical physical properties. Microstructural evaluated by scanning electron microscopic (SEM) imaging. results showed that boards containing increased compared board without wollastonite. modulus rupture, elasticity, internal bonding decreased content, its maximum value obtained when using 10% stem. addition is recommended significantly improve fire retardancy boards. from SEM images can fill in gaps inside create solid structure.