Preparation method of strong moisture-proof manila rope

The invention belongs to the technical field of hemp rope processing, and particularly relates to a preparation method of a strong moisture-proof manila rope. The preparation method comprises the following steps: preparing hemp threads with water content being 15-30 wt% by using sisal hemp as a raw material, carrying out treatment with oxalic acid solution to obtain acid-treated hemp threads, carrying out laminating by using a modified epoxy resin solution to obtain resin-coated hemp threads, and soaking the resin-coated hemp threads in a waterproof agent to obtain the strong moisture-proof manila rope. Compared with the prior art, the method has the advantages that the hemp threads subjected to acid treatment are coated with the modified epoxy resin solution, the modified epoxy resin canstably attach to the surfaces of the hemp threads, the acid treatment is beneficial to improvement of combination of the hemp threads and the modified epoxy resin, then the waterproof agent prepared by taking organic silicon