A kind of super-strength melt spinning processing method of cross-ocean fishing rope net

Abstract

A distant-water fishery rope net super-strong melt-spun filament processing method is characterized in that UHMWPE powder, HDPE powder, LLDPE powder, hydroxystearic acid, an ethylene-vinyl acetate copolymer, silicone powder, nanoscale white carbon black, an antioxidant DK-3114, an antioxidant DLTP, nanoscale diatomite, nanoscale wollastonite and turpentine oil additive which are weighed according to a formula are premixed and then are poured into a high-speed kneading pot for high-speed kneading to obtain a modified UHMWPE mixed material; the modified UHMWPE mixed material is subjected to melt extrusion of a twin-screw extruder, the extrudate is metered by a metering pump added at a twin-screw outlet and is melt and extruded out of a spinneret orifice, extruded spun filaments are cooled and pre-drafted, the pre-drafted filaments are subjected to heat setting, and then tows are taken up by using a tow take-up machine of a force moment electric motor and are divided by a filament dividing machine under filament dividing tension to obtain distant-water fishery super-strong melt-spun filaments.

Description

technical field [0001] The invention relates to a super-strength melt-spun yarn used in ocean-going fishery. Background technique [0002] Cross-ocean fishery generally refers to engaging in fishery production within 12-200 nautical miles of other countries. At present, my country's ocean-going fishery fleets in Africa, North Korea, South Asia and other places belong to this category. Through cooperation with local fishery companies, they have obtained government licenses With a fishery license, the fish can be exported to Europe, the United States and other countries, and some of them can be shipped back to China for sale. In this field, people generally process silk into rope nets first, then cut and process the rope nets and install attachments to make cross-ocean fishing nets. Therefore, silk is an important material in the technical field of cross-ocean fishery, and it is directly related to the cross-ocean fishery. The safety of fishing nets and their performance again...

AI Technical Summary

Problems solved by technology

In the field of prior art, melt spinning uses a single granular high-density polyethylene resin (hereinafter referred to as granular HDPE resin) as a raw material, uses a single hot water as a drafting medium, and is processed and produced by a traditional melt spinning process, which makes the silk and its The strength performance of the follow-up rope net products is poor (the strength index of the existing cross-ocean fishery melt-spun yarn is only 5.9g / D), and the incidents of wear and tear of the cross-sea fishery rope nets are prone to occur under harsh operating conditions. In the technical field, the strength, elongation, safety and anti-wave performance of melt-spun yarn are poor, and it is difficult to adapt to the development needs of modern ocean-crossing fisheries. Strong (strength greater than 8.5g / D), high extensibility (elongation at break greater than 14.6%), and good durability (the production and service life is 50% higher than that of existing overseas fishery melt-spun products) A kind of cross-ocean fishery super melt spinning

The granular HDPE resin raw materials in this field and its traditional melt spinning process cannot produce the super melt spinning with the above-mentioned high performance requirements, and ultra-high molecular weight polyethylene (UHMWPE) has extremely poor processing fluidity. There is no such thing as UHMWPE in this field. Powder, HDPE powder, linear low-density polyethylene powder (LLDPE powder for short) etc. are used as raw materials to produce a kind of super-strong melt-spinning of cross-ocean fishery using a special new process. Therefore, a super-strong melt-spinning of cross-sea fishery Silk has become a long-standing unresolved technical problem in this field