Manufacturing method of ultra high molecular weight polyethylene fiber composite meshes

Abstract

The invention discloses a manufacturing method of ultra high molecular weight polyethylene fiber composite meshes. The material is mainly used for the fields of fishing, fishery breeding and the like.The manufacturing method of the composite material comprises the following steps: placing a waterborne polyurethane resin solution in a solution pond, dipping the meshes in the solution pond, then feeding the meshes into a shaping machine by a transmission device through the solution pond, stretching, drying and shaping the meshes, carrying out primary treatment and then drying the meshes, and then repeatedly treating the meshes to obtain the finished product. In the aspect of the fishery breeding, the ultra high molecular weight polyethylene fiber meshes treated by the method are environmentally friendly and pollution-free, furthermore, the strength and wear resistance of the meshes can further be enhanced, influences of water flow retarding, bait stopping and oxygen stopping due to harmful adhesion of marine organisms can further be avoided, and the yield and quality of aquatic products which are bred by net boxes and net cages are improved.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene fiber composite mesh used in deep sea culture. Background technique [0002] In terms of fish farming, especially deep-sea farming, deep-sea cages are set in the ocean and are greatly affected by wind, waves and currents. The structural materials of deep-sea cages are not only the frame, but also the mesh material is the main factor affecting its performance. Therefore In the deep sea environment, there are high requirements on the strength, corrosion resistance and impact resistance of the net, and marine organisms are easy to attach to the net cage, resulting in blocked water flow, blocking bait and oxygen, and reducing the net cage and cage culture. The output and quality of aquatic products, and the cages may be attacked by large marine predators in the deep sea, so how to choose and manufacture the nets of high-strength deep-sea cages has become an urgent problem to be solved. ...

AI Technical Summary

Problems solved by technology

However, in large deep-sea cages, its strength, wear resistance, impact resistance, and anti-fouling ability cannot meet the requirements of deep-sea aquaculture, so it is particularly important to improve the material interface to achieve anti-fouling and enhance the strength and wear resistance of the net.

[0004] The Chinese invention patent discloses a patent No. 105401442 A as an example. 105401442 A discloses an ultra-high molecular weight polyethylene fiber grid whose main process steps are: first, the ultra-high molecular weight polyethylene fiber is coupled After being treated with the agent, drying and weaving are followed by impregnation, rolling, drying, shaping, and winding. Because the main use environment is the surface, it mainly solves the technical problems of fast aging of the grid mesh and inconvenient transportation. The strength, wear resistance, and impact resistance of high molecular weight polyethylene fiber itself have not been greatly improved. It can be used on the surface, but it will cause the following problems when used in deep-sea aquaculture:

[0005] 1. Insufficient strength. The most important performance of the mesh used in deep-sea aquaculture is its strength. In deep-sea aquaculture, the nets on the cages may be bitten by large marine carnivores. Tearing will cause the animals to escape or be killed, which will cause serious losses to deep-sea farming.

[0006] 2. The wear resistance is poor. Generally, the time period of deep-sea farming is long. Because the seawater is in a state of flow all year round, the cages are always in a state of shaking in the sea, so the nets on the cages will always be rubbed by seawater. If the nets If the wear resistance of the mesh is poor, the strength of the mesh will be reduced due to the friction of the flow of seawater on the mesh, which will greatly reduce its service life.

[0008] 4. The impact resistance is not strong. Generally, the time period of deep-sea farming is long, so it will often be affected by severe weather such as typhoons, which will cause the nets on the cages to encounter great impact. If the impact resistance is not good If it is too strong, it will cause the impact of external force to break through the net clothing, causing the animals to escape or be killed, which will cause serious losses to deep-sea farming.

[0009] 5. Poor corrosion resistance. The time period of deep-sea farming is generally longer, and the conditions on the seabed are much worse than those on land. The pH of seawater generally changes between 7.8 and 7.5, which itself is a strong corrosive medium. Seawater waves, waves, tides, currents, marine microorganisms, attached organisms and their metabolites all directly or indirectly accelerate the corrosion process. If the corrosion resistance of the net does not meet the requirements, it will It will cause the netting to be corroded, which will reduce the overall strength, wear resistance and impact resistance of the netting, and cause great safety hazards to deep-sea aquaculture.