Structural and decorative composite material, preparation method therefor, and article containing same

A composite material, formed from plant fiber fabric, comprising:

• a base layer;
• a first plant fiber fabric on, and in direct contact with, an upper surface of the base layer;
• a second plant fiber fabric on, and in direct contact with, a lower surface of the base layer;
• and
• a resin present in each layer, wherein the resin exists in the base layer, the first plant fiber fabric and the second plant fiber fabric, and combines the base layer, the first plant fiber fabric, and the second plant fiber fabric of the composite material, and wherein the resin is selected from the group consisting of phenolic resin, epoxy resin, and unsaturated polyester;
• wherein the first plant fiber fabric and the second plant fiber fabric are each formed independently by a method of manufacturing a plant fiber fabric,
• wherein the method comprises chemical degumming by treating raw plant fibers with an auxiliary comprising sodium triphosphate (Na5P3O10), a surfactant, and a non-acid leaching preparation, and wherein the surfactant is selected from sodium dodecylbenzene sulfonate, sodium polyacrylate, polyvinyl alcohol, alkyl polyoxyethylene ether, and sodium dibutyl naphthalene sulfonate;
• wherein the method excludes acid leaching, alkali boiling, stamping, acid washing, and fiber refining of the raw plant fibers;
• wherein the first plant fiber fabric and the second plant fiber fabric are each independently selected from fabrics made of the following materials:
• ramie, flax, jute, china-hemp (hemp), kenaf, or sisal;
• the base layer consists of a material selected from a group consisting of carbon fiber, glass fiber, aramid fiber, ultrahigh molecular weight polyethylene fiber, basalt fiber fabric, structural foam, and honeycomb core materials;
• and
• the composite material being formed by a method comprising:
• (a) impregnating the plant fiber fabric with the resin to form a plant fiber fabric prepreg;
• placing the plant fiber fabric prepreg on an upper surface of a base prepreg and on a lower surface of the base prepreg to form a composite material precursor, and curing the composite material precursor to form the composite material;
• or
• (b) placing the plant fiber fabric on an upper surface and a lower surface of the base layer to form a laminate;
• injecting the resin into the laminate;
• and curing the injected resin to form the composite material.