Preparation method of cylindrical hanging cage for preventing seaweed from attaching

Abstract

The invention provides a method for preparing an anti-seaweed adhesion cylindrical hanging cage, which includes the preparation of an outer cover net, including the preparation of an anti-seaweed adhesion composite material, the processing of an anti-seaweed adhesion tow, and the processing of an outer cover net. The spinning raw materials include grafted polymer Guanidine salt / polyethylene pellets, HDPE pellets, dioctyl phthalate, cetyl phosphate, polyethylene glycol fatty acid ester, surface-modified copper-nickel alloy nanoparticles; B, cage assembly, cutting A piece of rectangular outer cover net, and the length of setting this rectangular outer cover net increases 44cm-56cm again than the product of layer height and number of layers, and the width of rectangular outer cover net is 3.142 times of cylindrical hanging cage diameter. The anti-seaweed adhesion cylindrical hanging cage produced by the technical scheme of the present invention can not only greatly improve the anti-seaweed adhesion function of the outer cover net, but also make the water resistance and seaweed and other fouling organisms The reduction of the attachment area can greatly reduce the incidence of algae attachment to the cylindrical hanging cage and the occurrence of cage breaking accidents under severe sea conditions.

Description

technical field [0001] The invention belongs to the technical field of seawater hanging cages, and in particular relates to a preparation method of a cylindrical hanging cage for preventing seaweed from adhering. Background technique [0002] The hanging cages for mariculture are composed of plastic plates and outer cover nets. Cylindrical hanging cages are commonly used for breeding marine organisms such as scallops, abalones and sea cucumbers. The cylindrical cage consists of two parts, the outer cover net and the layered plastic disc. The outer cover net is covered outside the plastic disc of the cylindrical cage and used as the cage body; the plastic disc is made of plastic, and the edges are usually evenly distributed with round holes for net assembly. , round holes for water filtration are distributed on the surface of the plate, which are used for cage compartments and habitats for marine organisms such as scallops. [0003] When the cylindrical cage is hung vertical...

AI Technical Summary

Problems solved by technology

Therefore, the outer cover net processed by the ordinary polyethylene monofilament is poor in safety, and cannot meet the demand for wind and wave resistance in harsh sea conditions such as high waves and rapid currents. Cage breakage accidents often occur in aquaculture production under harsh sea conditions, which seriously restricts The sustainable and healthy development of my country's seawater cage industry

[0007] At the same time, after the cylindrical hanging cage processed by ordinary polyethylene monofilament is used in the ocean for a period of time, the outer net will be adhered by seaweed and other fouling organisms, which will affect the water exchange inside and outside the cylindrical hanging cage, the growth and maintenance of breeding organisms biological quality and safety

Severe adhesion of fouling organisms such as seaweed to the outer cover net will not only lead to multiple diseases and even death of the cultured organisms in the cage, but also seriously affect the safety of the cage facilities and the quality of the cultivated organisms, etc., which has become a bottleneck in the development of the seawater cage industry. Seriously restricting the sustainable and healthy development of the entire industry

[0008] In order to solve this problem, some enterprises first process the outer cover net with ordinary polyethylene monofilament, and then coat the outer cover net with antifouling paint to improve the antifouling function of the hanging cage, but this antifouling coating method cannot be used for the hanging cage industry at present. Accepted, the reasons are as follows: (1) the number of hanging cages is huge, and the cumbersome antifouling technology is not suitable for large-scale application in the industry; (2) the antifouling coating method is complicated in process and high in cost; (3) the marine aquaculture environment is different from freshwater aquaculture The anti-fouling paint coated on the outer cover net is easy to fall off under the harsh sea conditions with high waves and rapid currents, and the outer cover net after the paint falls off is also quickly attached by seaweed and other marine organisms due to the loss of anti-fouling function.