Manufacturing method of super antibacterial melt-spinning yarn for krill fishery or breeding seine

Abstract

The invention relates to a manufacturing method of superstrong-bacterium-inhibiting melt-spun filaments for krill fishery or aquaculture purse seines. The manufacturing method is characterized by including: premixing UHMWPE powder, HDPE powder, nano titanium dioxide silver-loaded antibacterial agent, nano titanium dioxide, hydroxy stearic acid, ethylene-vinyl acetate copolymer, silicone powder, antioxidant 1010, nanoscale diatomite, nanoscale white carbon black, assistant antioxidant DLTP and white oil weighed according to the formula, and pouring into a high-speed kneading pot to perform high-speed kneading to obtain a UHMWPE composite material; extruding the UHMWPE composite material with a double-screw extruder in a melt manner, using a measuring pump mounted at the a double-screw outlet to measure the extruded material, extruding the measured material from a spinneret orifice in a melt manner, cooling and pre-drafting the extruded spun filaments, subjecting the pre-drafted filaments to thermoforming, using a filament collecting machine using a torque motor to wind melt-spun tows; separating the melt-spun tows with a filament separator to obtain the superstrong-bacterium-inhibiting melt-spun filaments for the krill fishery or aquaculture purse seines.

Description

technical field [0001] The invention relates to a super antibacterial melt-spun yarn for the development and utilization of deep sea biological resources. Background technique [0002] In the technical field of development and utilization of deep-sea biological resources, the fishery with krill as the fishing object is called krill fishery; the seine equipment installed for breeding aquatic organisms is called aquaculture seine (also known as aquaculture net seine) . In this field, melt-spun monofilaments are referred to as melt-spun filaments for short; polyethylene melt-spun monofilaments with a strength less than 6.4cN / dtex are called polyethylene melt-spun filaments or polyethylene monofilaments. People in the art refer to the melt-spun monofilament with antibacterial function as antibacterial melt-spun filament; Spun monofilament is called high-strength antibacterial melt-spun yarn; melt-spun monofilament with antibacterial function with a strength greater than 7.5cN / ...

AI Technical Summary

Problems solved by technology

This technical field is far from the technical fields of textiles, cages, plastics, offshore fishing, etc. Therefore, the production methods of monofilament, multifilament, pipe, profile, film, split film, sheet, and rod in the above fields cannot be processed Production of super antibacterial melt-spun yarn for krill fishery or aquaculture purse seine

In the prior art, melt spinning uses 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 melt spinning have no antibacterial function and poor strength. (the breaking strength of existing polyethylene melt-spinning, the nodule strength qualified product index are respectively 5.2cN / dtex, 3.6cN / dtex), cause the breakage of krill fishery net gear or aquaculture seine easily to occur under bad operating conditions, Fouling organisms are seriously attached to the event. The strength of melt spinning in the prior art is low and the antibacterial function is missing. It is difficult to meet the rapid development needs of the development and utilization of deep sea biological resources. People urgently need to process and produce large diameter (not less than 0.33mm), Good appearance (smooth silk surface, good roundness), high strength (breaking strength greater than 7.5cN / dtex, nodular strength greater than 4.0cN / dtex), high elongation at break (elongation at break greater than 9%), Super antibacterial melt-spun yarn for krill fishery or aquaculture purse seine with antibacterial function (can effectively prevent the attachment of seawater and freshwater fouling organisms)

In this field, HDPE resin raw materials, traditional melt spinning technology and equipment cannot produce the above-mentioned super antibacterial melt spinning for krill fishery or aquaculture purse seine, and the molecular weight of ultra-high molecular weight polyethylene (UHMWPE) is too large and the melt viscosity is too high. Extremely high and extremely poor processing fluidity, so it is difficult to directly spin with traditional melt spinning technology and equipment. There is no public literature report on super antibacterial melt spinning for krill fishery or aquaculture purse seine. Therefore, Super antibacterial melt spinning for krill fishery or aquaculture seine has become a long-term unresolved technical problem in this field