Modified soapstone, quaternary ammonium polylactide/fulvate modified soapstone composite material and preparation methods and products thereof

The invention relates to the technical field of modified soapstone and quaternary ammonium polylactide/fulvate modified soapstone composite materials and discloses modified soapstone, a quaternary ammonium polylactide/fulvate modified soapstone composite material and preparation methods and products thereof. The modified soapstone is prepared from soapstone and quaternary ammonium fulvate, wherein the mass ratio of soapstone to quaternary ammonium fulvate is 1: 0.5 to 1: 3. Compared with the polylactic-acid base materials in the prior art, the quaternary ammonium polylactide/fulvate modified soapstone composite material and products thereof disclosed by the invention have the advantage that both tensile strength and heat resistance are improved obviously; the antibacterial performance of the quaternary ammonium polylactide/fulvate modified soapstone composite material disclosed by the invention is improved remarkably compared with the polylactic-acid base materials in the prior art, so that the field of the application of the polylactic-acid base materials is widened; moreover, the modified soapstone, the quaternary ammonium polylactide/fulvate modified soapstone composite material and the preparation methods and products thereof have important significance in promoting the high-added-value development of weathered coal resources and soapstone resources.