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 ...