Isotropic low-shrinkage antibiotic and mildew-resistant polypropylene resin and preparation method thereof

The invention provides an isotropic low-shrinkage antibiotic and mildew-resistant polypropylene resin and a preparation method thereof. The preparation method of the resin comprises the following steps: adding a nucleating agent, a composite antibiotic mildew inhibitor, a lubricant and an acid absorption agent to a polypropylene resin and a metallocene linear low density polyethylene, mixing, and granulating. The resin has good antibiosis and mildew resistance, can be widely used to produce various washing machine parts, door handles, telephone boxes, bathroom stools, soapboxes, pet cages and other products, also has the characteristics of low shrinkage and isotropic shrinkage, and can obviously improve the problems of easy warpage and deformation and difficult assembling of polypropylene injection molded products. The preparation method of the resin is simple, is easy to implement, and is easy to realize.