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Processing method of fibers for grid type purse net fishing net

A processing method and net-type technology, applied in fiber processing, fiber chemical characteristics, application, etc., can solve problems such as harsh production and operation conditions, low breaking strength of polyethylene fibers, mesh-type seine net broken fish escape accidents, etc., to achieve Improve flow uniformity and extrusion quality, enhance strength and UV aging resistance, improve the effect of UV aging resistance

Active Publication Date: 2016-12-07
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nets involved in this technical field are large (areas up to more than 10 mu), and the production and operation conditions are harsh (water depth and waves are large), which are far from technical fields such as net cages, plastics, textiles, and offshore fishing. Therefore, the monofilaments in the above fields , multifilament, pipe, profile, film, and split film production methods cannot produce a kind of fiber for mesh purse seine
In the prior art, polyethylene fiber is produced by using a single high-density polyethylene resin (hereinafter referred to as HDPE resin) as a raw material, and is processed and produced by a traditional melt spinning process, which makes the produced polyethylene fiber have no antibacterial and antifouling functions and low breaking strength (The breaking strength of the existing polyethylene fiber is only 5.2cN / dtex), which leads to the occurrence of severe adhesion of fouling organisms in the production of mesh seine nets, and the occurrence of broken fish in mesh seine nets under severe operating conditions such as typhoons Avoiding accidents, polyethylene fibers in the prior art have low breaking strength and lack of antibacterial and antifouling functions, so it is difficult to adapt to the needs of modern fishery production. People urgently need processing and production with good roundness and high breaking strength (breaking strength greater than 7.5cN / dtex) , high elongation at break (elongation at break greater than 9%), and antibacterial and antifouling functions (can effectively prevent the attachment of seawater and freshwater fouling organisms) is a mesh-style seine fiber
In this field, HDPE resin raw materials, traditional melt spinning technology and equipment cannot produce the above-mentioned fiber for mesh seine nets, and ultra-high molecular weight polyethylene (abbreviated as UHMWPE) has too much molecular weight, high melt viscosity, and processing flow. Therefore, it is difficult to directly spin with traditional melt spinning technology and equipment. Therefore, a kind of fiber for mesh seine netting has become a long-term unresolved technical problem in this field.

Method used

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Embodiment Construction

[0006] Here, the specific embodiment of the present invention is introduced by taking the fiber for a mesh purse-seine net with a diameter of 0.38 mm as an example.

[0007]The technical scheme of the present invention adopts UHMWPE powder, silicone powder, nano-silica, HDPE powder, nano-titanium dioxide silver-loaded antibacterial agent, antioxidant B225, hydroxystearic acid, nano-scale diatomaceous earth, nano-scale white carbon black, Nanoscale wollastonite, ethylene-vinyl acetate copolymer, high-speed kneader, metering pump, twin-screw extruder (in order to increase the spinning effect, the flow path of the twin-screw extruder used in the present invention can be compared with ordinary twin-screw extruders. The length of the machine is 5cm-20cm), which is characterized in that the UHMWPE powder weighed according to the formula (commercially available UHMWPE powder, the melt index is 0.09g / 10min-0.25g / 10min, the molecular weight is 1.9 million-2.7 million, English is Ultra M...

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Abstract

The invention provides a processing method of fibers for a grid type purse net fishing net. The processing method is characterized by comprising the following steps: pre-mixing UHMWPE (Ultrahigh Molecular Weight Polyethylene) powder, silicone powder, nano silicon dioxide, HDPE (High-density Polyethylene) powder, a nano titanium dioxide silver-loaded antibacterial agent, an antioxidant B225, hydroxystearic acid, nano-grade diatomite, nano-grade white carbon black, nano-grade wollastonite and an ethylene-vinyl acetate copolymer, which are weighed according to a formula, and pouring the mixture into a high-speed kneading pot and carrying out high-speed kneading to obtain a UHMWPE modified material; fusing and extruding the UHMWPE modified material through a double-screw-rod extruder; fusing and extruding an extruded product from a spinneret hole through a metering pump which is additionally arranged on a double-screw-rod outlet; cooling, pre-stretching and hotly setting extruded freshly formed filaments and winding a fiber bundle through a fiber winding machine which utilizes a torque motor; dividing the fiber bundle into fibers through a fiber dividing machine, so as to obtain the fibers for the grid type purse net fishing net.

Description

technical field [0001] The present invention relates to fibers for mesh fences. Background technique [0002] In this technical field, the grid-style seine refers to a breeding seine that is arranged in a grid and mainly breeds fish, shrimp, shellfish, ducks, geese and other organisms, such as a grid-shaped grid, a grid-shaped grid, and a zigzag grid. Seines in the form of nets, etc., successful cases such as the grid-shaped seines designed by Shi Jiangao, a researcher at the East China Sea Fisheries Research Institute, and the grid-shaped seines in the field. In the production of mesh seine nets, due to fouling organisms, the exchange of water inside and outside the mesh seine nets is not smooth, which further leads to frequent occurrence of fish diseases in farmed fish and a decline in the quality of raised fish. Farmers complain about this, and people can only use Cleaning, changing nets and other methods are used to maintain and utilize grid seine nets; however, the str...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D01D5/08D01D5/088D01D5/14D01D5/16D01D10/02A01K61/00
CPCY02A40/81D01F6/46A01K61/00D01D5/08D01D5/088D01D5/14D01D5/16D01D10/02D01F1/10D01F1/103
Inventor 石建高余雯雯常广贾陆林周文博
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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