Presulfurized natural latex/polyhydroxybutyrate blend material and preparation method thereof

The invention provides a presulfurized natural latex/polyhydroxybutyrate blend material and a preparation method thereof. The presulfurized natural latex/polyhydroxybutyrate blend material comprises the following components in parts by weight on dry basis: 100 parts of presulfurized natural latex and 1.0-10.0 parts of polyhydroxybutyrate. The preparation method comprises the following steps: presulfurizing a concentrated natural latex; preparing polyhydroxybutyrate into a 5-10% polyhydroxybutyrate water dispersion, adding into the presulfurized natural latex, stirring, filtering, and standing for defoaming to obtain an emulsion presulfurized natural latex/polyhydroxybutyrate blend material; and carrying out solidifying, leaching, drying and other conventional techniques for latex product production to obtain the blend rubber film. The method fully utilizes the respective excellent characteristics of the natural latex and polyhydroxybutyrate, so that the prepared natural-latex-base medical material maintains excellent elasticity of the natural rubber, has favorable biocompatibility, and can be used for producing surgical gloves, medical examination gloves, catheters, condoms, drainage tubes and other medical latex products.