Preparation method of monofilament for net cage body and trawl fishing gear

Abstract

A preparation method of a monofilament for net cage body and trawl fishing gear. The invention employs a mixer, a double-screw extruder, a single-screw extruder, a secondary drafting electric heating draw machine, a winding machine using a torque motor, a filament splitting machine, a spinning grade drying HDPE resin, nanometer drying ZnO and a turpentine assistant for spinning. The method is characterized by comprising the steps of: mixing the spinning grade drying HDPE resin, the nanometer drying ZnO and the turpentine assistant for spinning; stirring the mixture with a mixer to a uniform state; granulating the thoroughly mixed mixture by the twin-screw extruder to obtain the blend pellets; subjecting the blend pellets to melt extrusion by the single-screw extruder; subjecting the primary monofilament obtained from melt extrusion to cooling and a preliminary drafting; subjecting the composite monofilament from preliminary drafting to two times of hot drafting, then high-pressure airflow oil removal and fast cooling; winding the monofilament by the winding machine using torque motor; and splitting the monofilament by the filament splitting machine into a energy-saving and emission-reducing monofilament for net cage body and trawl fishing gear.

Description

technical field [0001] The invention relates to a method for preparing monofilaments for net cages and trawl fishing gear in the field of aquatic products technology. Background technique [0002] Aquaculture cages and trawl fishing gear in the field of agricultural science and aquatic technology have played an important role in obtaining aquatic protein for humans. The wear resistance, breaking strength and adaptability of the matrix fiber materials used in the production of aquaculture cages and trawl fishing gear have a very important impact on the consumption of raw materials and carbon emissions in the operation of cages and trawl fishing gear. The cage body and trawl fishing gear made of high-strength, high-strength and good-adaptability matrix fiber materials can reduce the consumption and emission of the cage and trawl fishing gear in fishery production, and can develop low-carbon and climate-friendly aquatic cages Aquaculture and pelagic trawl fisheries. Ordinary ...

AI Technical Summary

Problems solved by technology

Common PE monofilaments used in the production of cages and trawl fishing gear in the existing aquatic technology field use high-density polyethylene (HDPE) resin as raw material, the spinning heating medium is water, and the traditional melt spinning process is adopted, resulting in common PE monofilaments There are defects of poor wear resistance, low breaking strength and poor adaptability

Due to the low breaking strength of ordinary PE monofilament, the cage body and trawl fishing gear products downstream of ordinary PE monofilament (that is, the subsequent process) are easily damaged in fishery production, causing heavy losses to users of the cage body and trawl fishing gear. Therefore, ordinary PE monofilament still has the defects of poor wear resistance, low breaking strength and poor adaptability, and it is difficult to meet the requirements of reducing consumption and emission of cage boxes and trawl fishing gear in the field of modern aquatic technology, and developing low-carbon fisheries. urgent need

In order to meet the development needs of consumption reduction, emission reduction and low-carbon fishery, the aquatic technology field urgently needs a method for preparing monofilaments with good wear resistance, high breaking strength and good adaptability for net cage boxes and trawl fishing gear with consumption reduction and emission reduction. In order to prepare the net cage body with good wear resistance, high breaking strength and good adaptability and the consumption and emission reduction monofilament for trawl fishing gear, but there is no net cage body based on consumption reduction and emission reduction in the existing aquatic technology field and the preparation method of monofilament for trawl fishing gear, therefore, the preparation method of consumption and emission reduction monofilament for net cage box and trawl fishing gear has become a technical problem that needs to be solved urgently in the existing aquatic technology field