THE RESEARCH OF AIR-NEGATIVE-ION HEALTHCARE ELEMENTARY MATERIALS

The paper has the trial-preparation of air-negative-ion healthcare elementary materials that are made of tourmaline, nano-TiO₂ and four kinds of lanthanum series oxides, and then has the research of their performances. The results show that CeO₂ takes on the best effect when nano-TiO₂, CeO₂, La₂O₃, Pr₆O₁₁, Nd₂O₃ compounds singly with the tourmaline, Pr₆O₁₁, La₂O₃ take common effect, Nd₂O₃, nano-TiO₂ impels instead the air-negative-ion effect of tourmaline reducing; the best proportion of tourmaline and CeO₂ is 1:1, and the air-negative-ion concentration reaches 2000 negative ions/cm³ on having the testing of the sample of 100g; the best proportion of tourmaline and CeO₂: the surface energy on the air molecule's ionizations arrives at the saturation in 18 h, and presents the increase by degrees with the increase of the sample's amount.