The Study of Modification of PVC-materials by Rice Husk Ash Including Activated by Cationic Surfactant and Wollastonite on Its BasisElena Gotlib, Dilyara Sadykova, Alla Sokolova and Elena CherezovaE3S Web of Conf., 410 (2023) 01002DOI: https://doi.org/10.1051/e3sconf/202341001002