Processing method for antifouling melt spinning for far-reaching-sea net cage or floating-rope surrounding net

Abstract

The invention discloses a processing method for antifouling melt spinning for a far-reaching-sea net cage or a floating-rope surrounding net. The processing method is characterized by including the steps that UHMWPE powder, nanometer Cu powder, HDPE powder, silicone powder, antioxidant B225, assistant antioxidant DLTP, hydroxy stearic acid, nanoscale white carbon black, nanoscale kieselguhr, nanoscale aedelforsite, ethylene-vinyl acetate copolymer and turpentine assistant are weighed in the formula, then premixed to be poured into a high-speed kneading pot and subjected to high-speed kneading, and a blending-modification UHMWPE material is obtained; the blending-modification UHMWPE material is belted and extruded through a double-screw extruder, the extruded substance is metered through a metering pump additionally arranged through a double-screw outlet and belted and extruded through a spinneret hole, the extruded primary raw silk is cooled and pre-drafted, the pre-drafted silk is subjected to heat setting, then tows are winded through a silk winding machine of a torque motor, and are subjected to silk dividing through a silk dividing machine, and the antifouling melt spinning for the far-reaching-sea net cage or the floating-rope surrounding net is obtained.

Description

technical field [0001] The invention relates to an antifouling melt-spinning yarn for the development and utilization of marine biological resources, in particular to an antifouling melt-spinning yarn for deep sea cages or floating rope seines. Background technique [0002] In the technical field of marine biological resources development and utilization, the net cages produced in deep sea operations are called deep sea net cages; the breeding nets equipped with floating balls, ropes and nets and mainly used for breeding fish and other organisms are called deep sea net cages. It is a floating rope seine. In this field, people generally refer to the monofilament with anti-fouling function produced by the melt-spinning process as anti-fouling melt-spinning. Under the premise of the same rope net wire specification, the use of anti-fouling melt spinning (especially large-diameter anti-fouling melt spinning with a diameter of not less than 0.33mm) can effectively reduce fouling...

AI Technical Summary

Problems solved by technology

Technical field The polyethylene monofilaments used for deep sea cages or floating rope seines use a single high-density polyethylene resin (hereinafter referred to as HDPE resin) as raw material, and are processed and produced by traditional melt spinning technology, which makes the produced polyethylene The monofilament has no anti-fouling function, and the nodule strength is poor (the qualified product index is only 3.6cN / dtex), which leads to not only easy occurrence of mesh breakage and escape of breeding organisms, but also prone to deep-sea cages or floating ropes under harsh operating conditions. Type seine fouling organisms are seriously attached, and the exchange of internal and external water bodies is poor, which seriously affects the safety, growth and quality of aquaculture organisms. In the prior art, polyethylene monofilaments lack anti-fouling functions and poor nodule strength, which is difficult to adapt to modern deep seas. For the offshore and large-scale development of cages or floating rope seines, people urgently need to process and produce diameters not less than 0.33mm, good nodule strength (nodule strength greater than 4.0cN / dtex), good impact resistance (fracture The elongation rate is greater than 9%), with anti-fouling function (can effectively prevent fouling organisms from attaching), anti-fouling melt spinning for deep-sea net cages or floating rope seines

Granular HDPE resin raw materials and its traditional melt spinning process in this field cannot produce the above-mentioned functional anti-fouling melt spinning at all, and ultra-high molecular weight polyethylene (UHMWPE) has too large a molecular weight, extremely high melt viscosity, and processing fluidity. It is extremely poor, so it is difficult to directly spin with traditional melt spinning technology and equipment. Therefore, antifouling melt spinning for deep sea cages or floating rope seines has become a long-term unresolved technical problem in this field.