Preparation method of rectangular separation net for deep and far sea culture

Abstract

The invention provides a preparation method of a rectangular separation net for deep and far sea culture, which comprises the following steps: preparing a blended antifouling composite material, preparing a light blue monofilament bundle, preparing a rectangular separation net, and mixing polypropylene granules, a polyhexamethylene guanidine hydrochloride grafted modified polypropylene antifouling material, nano copper powder, pyrithione copper powder, tetra [beta-(3, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4- 2, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, tri (1, 2, 2, 6, 6-pentamethylpiperidinyl) phosphite, phthalocyanine blue pigment, titanium dioxide and turpentine are mixed and uniformly stirred, extrusion granulation is performed 2-3 times through a double-screw extruder to obtain a blended antifouling composite material, light blue monofilament tows are obtained after wire drawing and rolling, and the light blue monofilament tows are used as raw materials. And obtaining the rectangular separation net for deep and far sea culture by using a special rectangular separation net preparation method.

Description

technical field [0001] The invention belongs to the technical field of deep-sea aquaculture, in particular to a preparation method of a rectangular deep-sea culture separation net. Background technique [0002] Deep sea aquaculture is a brand-new technical field in my country and is currently in its infancy. Moving the aquaculture area from the nearshore to the deep sea can effectively enhance the sustainability of aquaculture production, and the aquaculture water body inside the deep sea aquaculture equipment and facilities is very large, and some single aquaculture water bodies are as high as 50,000 cubic meters. In order to breed different kinds of fish, people divide the interior space of deep-sea aquaculture equipment into several small breeding areas with separation nets. Fish farming needs. In the technical field, the nets used to separate the interior space of deep-sea aquaculture equipment and facilities are referred to as deep-sea aquaculture separation nets or s...

AI Technical Summary

Problems solved by technology

[0003] At present, when splicing and suturing between the meshes in the traditional partition net used in this field, the net knot and the splicing suture generally adopt slipknot and ordinary polyethylene thread. Problems such as the breakage of the yarn lead to the problem of "mutual visiting" of fish in different separation areas from the stitching and tearing or the problem of stabbing fish, and the separation function of the separation net cannot be exerted at all; at the same time, the separation net is used in the sea for a period of time. After a period of time, a large number of fouling organisms such as barnacles, mussels, and algae will adhere to the separation net. The rope is worn or cut, thus causing the accident of "fish escaping with broken net", seriously affecting the safety of deep-sea aquaculture equipment and facilities and the ecological safety of farmed fish

[0004] In the existing technology, the traditional separator is generally made of the same raw material and two drafting machines, with obvious disadvantages: (1) The ordinary monofilament produced is made by the traditional wire drawing process, and its comprehensive performance such as strength is low, and it has no anti-fouling function (2) The traditional separation net uses a colorless separation net, and the phenomenon of bumping into the net (touching the separation net) often occurs in fish farming, which affects the healthy growth of fish; Either the setting tension is improperly applied, which leads to low mesh fastness and high mesh size deviation rate of the separating net. In deep-sea aquaculture operations, the phenomenon of net knot slippage is prone to occur, and further splicing, stitching, tearing, and thorn hanging will occur. Serious problems for fish; (4) The traditional separation nets are manually installed with margins, and the edges of the separation nets are not edged, so the work efficiency is low and the edge strength of the nets is low, which seriously restricts the high-quality development of the deep-sea aquaculture industry

[0005] The above-mentioned problems related to the traditional separation net have seriously plagued the deep-sea aquaculture industry and become an urgent problem that the current industry needs to solve urgently

And this technical field is far from other technical fields such as the textile field, the fishing gear field, the freshwater aquaculture field, the near-shore aquaculture field, the deep-water net cage field, the common net cage field, the common fence field, the offshore aquaculture field, and other technical fields. Monofilament, wire and mesh technologies are not suitable for this technical field, and it is difficult to provide reference for solving technical problems in this field, and monofilament, thread and mesh technologies used in other fields cannot be used as comparative technologies in this field at all