Method for producing fibers used for twisted threads

Abstract

The invention discloses a method for producing fibers used for twisted threads. According to the method, MMWPE resin, HDPE resin, nanometer SiO2, an auxiliary agent, an agitator, a yarn separating machine, a yarn withdrawal machine, a single screw extruder and a twice-drafting electrical heating drafting machine are adopted, and the method is characterized in that the MMWPE resin, the HDPE resin, the nanometer SiO2 and the auxiliary agent are stirred to be uniform with the agitator, nano-modified compound granules are obtained, the nano-modified compound granules are melt and extruded through the single screw extruder, newly-generated yarn obtained through the extrusion is subjected to cooling and pre-drafting through a cooling water tank and a first drafting roller, pre-drafted yarn is subjected to hot drafting for twice through a high temperature first drafting water bath and a second drafting roller as well as a high temperature second drafting water bath and a third drafting roller, and after the drafting, fiber tows are reeled through the yarn withdrawal machine which uses a moment electric motor; the fiber tows are separated into the fibers used for the twisted threads through the yarn separating machine under the yarn separation tensile force, and the yarn separation tensile force is controlled to be 12%-21% of the fiber breaking force.

Description

technical field [0001] The invention relates to a method for manufacturing fibers for twisted threads in the technical field of seawater fish cultivation and fishing. Background technique [0002] Netting cable is an important material in the technical field of marine fish farming and fishing, which is directly related to the success or failure of marine fish farming and fishing. In the production process of the network cable, people first process the monofilament, multifilament and other fibers into strands, and then twist the strands to form a network cable. The wire made by twisting the strands is called twisted wire. With the development of marine fish farming nets and fishing gear towards large-scale, offshore and low-carbonization, people have put forward higher requirements for the tensile mechanical properties of twisted fibers in this technical field. There are far differences in the technical requirements of textile technology and freshwater fish culture net cage...

AI Technical Summary

Problems solved by technology

Existing fibers for twisting in the field 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 tensile mechanical properties of the fiber poor, resulting in twisted twisted fibers. The tensile mechanical properties of thread products are also relatively poor, which eventually leads to poor quality of seawater fish culture nets and fishing gear made by twisted threads, and accidents of net breaking and fish escape are prone to occur under harsh operating conditions. In the prior art, twisted threads The adaptability of fiber is poor, it is difficult to adapt to the sustainable and healthy development of modern marine fish farming and capture fishery and to meet the needs of the country to promote the construction of marine fish farming and fishing technology. The production method of the tensile mechanical properties of the twisted fiber used for fishing gear, and the solution of its production method has become a long-standing unresolved technical problem in this field