Starch-polypropylene foam packaging material and preparation method thereof

A starch-polypropylene foam packaging material characterized in that it comprises the following components (by weight): starch 30 to 42 parts polypropylene 70 to 100 parts p-toluenesulfonamide semicarbazide 3 to 5 parts sodium benzoate 0.5 to 1.0 part of 2,5-dimethyl-2,5-di-tert-butylperoxyhexane 1 to 2 parts or dicumyl peroxide 1.5 to 2.5 parts of fatty acid glycerol 14 to 20 parts isopentane 12 to 16 Or 3 to 4 parts of carbon dioxide

The invention is a biodegradable starch-polypropylene foam packaging material and a preparation method thereof. It includes starch, polypropylene, p-toluenesulfonamide semicarbazide, sodium benzoate, 2,5-dimethyl-2,5-di-tert-butylperoxyhexane or dicumyl peroxide, fatty acid glyceride, Isopentan or carbon dioxide. The preparation method mainly comprises the steps of material mixing, barrel heating and extrusion, roller pressing and the like. The starch in the composition of the invention can be biodegraded, and the polypropylene can be rapidly degraded by light, heat and oxygen. The foam packaging material is prepared by mixing and foaming the polypropylene, so that the biodegradable and rapid degradation of light, heat and oxygen can be achieved. . Compared with the prior art, the degradation performance is more excellent and the degradation rate is faster. At the same time, the invention also solves the problem that polypropylene is difficult to foam, so that it can become a better foam packaging material. In addition, the invention also has the advantages that the formula is reasonable and simple and the preparation method is simple and convenient.