Preparation method of circular truncated cone-shaped side net for semi-submersible aquaculture platform

Abstract

The invention provides a preparation method of a circular truncated cone-shaped side net for a semi-submersible aquaculture platform. The preparation method comprises anti-fouling monofilament bundlepreparation, anti-fouling net sheet preparation, and circular truncated cone-shaped side net preparation. Preparation raw materials comprise PP resin, dioctyl phthalate, polyethylene glycol fatty acidester, cetyl phosphate, a grafted polyguanidine salt / polyethylene granular material, and surface modified copper-nickel alloy nanoparticles. When the anti-fouling net sheet is prepared, first the antifouling monofilament bundle is twisted to obtain an antifouling strand with the Z twist direction, then three antifouling strands with the Z twist direction are processed into an antifouling twistedthread with the S twist direction, then the antifouling twisted thread with the S twist direction is processed into a net sheet with double dead knots, and finally the net sheet is subjected to heat-setting with 0.22 times the longitudinal breaking strength of the net sheet as a pre-tension. When the circular truncated cone-shaped side net is prepared, knotting is performed in a circulation mannerof "single dead knot-single dead knot-double dead knot-double dead knot", then a net sheet is subjected to fan ring-shaped cutting, edge line and net line assembly, and edge strengthening, then mother lines at the left and right side of a fan ring-shaped net sheet are butted and stitched, and double dead knots are knotted at the same distance when butting and stitching are performed.

Description

technical field [0001] The invention belongs to the technical field of aquaculture platforms, and in particular relates to a preparation method of a frustum-shaped side net for a semi-submersible aquaculture platform. Background technique [0002] The aquaculture platform is a special fish farming equipment that has just emerged in recent years. "Case body", "side net", "mesh", "edge", "net", and "semi-submersible aquaculture platform" are terms in the technical field of aquaculture platforms. The semi-submersible aquaculture platform generally refers to a cage platform that can realize a semi-submerged state in aquaculture. It generally consists of three parts: a frame system, a box system and an anchoring system. The box system (abbreviated as the box) refers to the space for raising aquatic animals composed of mesh sheets; the box generally includes two parts: side nets and bottom nets. The side net refers to the mesh that surrounds the perimeter of the box. Mesh refer...

AI Technical Summary

Problems solved by technology

Due to various reasons, there is no public report on the preparation of antifouling composites with special materials such as grafted polyguanidine salt / polyethylene pellets, surface-modified copper-nickel alloy nanoparticles, etc. in this technical field; In the technical field, it has not been found that special materials such as double dead-knot anti-fouling mesh, carbon fiber thread, ultra-high molecular weight polyethylene (abbreviated as UHMWPE) twisted yarn, ultra-high molecular weight polyethylene (abbreviated as UHMWPE) rope and other special materials have anti-fouling functions. Public reporting on sidenets

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