Fixed fishing nets used in marine aquaculture, after contact with organic matter and bacteria, diatoms will multiply, while shellfish, barnacles and other marine organisms that feed on diatoms will gather and adhere, which will not only increase the flow resistance and cause the fishing nets Decontamination of the fish, and will cause anoxic infections, causing problems such as stunted fish development. For this reason, antiseptics, fungicides, etc. are generally used, but in this case, the service life of the fixed net does not exceed 20 years, and in order to remove the attached microorganisms, the net must be regularly pulled ashore for the mechanical removal, resulting in increased labor costs and Problems such as deterioration of fishing nets. Researchers from the University of Tokyo have studied the weaving of Grade 12 Titanium Wire into existing polyethylene (PE) fishing nets and electrifying them to electrolyze the seawater near the Ti 6Al-2Sn-4Zr-6Mo Titanium Rod to produce chlorine and ClO, which can kill bacteria and inhibit bacterial growth. First, a mesh made of platinum-plated titanium wire with a diameter of 1 mm was used as the anode, and a stainless steel 312L plate was used as the cathode to conduct an electrolysis test. The results showed that the applied voltage was 3.0 V. After being placed in seawater for 14 days, the weight of the titanium mesh did not change, while the unpowered titanium mesh attached marine organisms.
The main purpose is to study the matching of the strength and elongation of the titanium wire and the PE wire. The existing fishing net is woven by twisting 10 PE monofilaments with a diameter of 0.10 mm into composite yarns and then twisting 2 composite yarns into twisted yarns. The researched titanium mesh is made by twisting 10 PE monofilaments and Grade 1 Titanium Straight Wire into twisted filaments, and then twisting the two twisted filaments into twisted filaments for weaving. Tensile tests of different diameter titanium wires (Φ0.10 mm, Φ0.25 mm, and Φ0.50 mm) and PE filaments of monofilament, combined filament and twisted filament were carried out. The results show that the elongation of titanium wire is lower than that of PE wire, especially the Medical Grade Titanium Wire of Φ0.10 mm. The titanium wire (Φ0.25 mm, Φ0.50 mm) in the titanium composite wire broke simultaneously with the surrounding PE, and the titanium wire (Φ0.25 mm) in the titanium twisted wire broke simultaneously with the surrounding PE. It shows that the fishing net twisted into the titanium wire has the same strength as the existing fishing net woven with polyethylene wire.
The main purpose is to study the matching of the strength and elongation of the titanium wire and the PE wire. The existing fishing net is woven by twisting 10 PE monofilaments with a diameter of 0.10 mm into composite yarns and then twisting 2 composite yarns into twisted yarns. The researched titanium mesh is made by twisting 10 PE monofilaments and Grade 1 Titanium Straight Wire into twisted filaments, and then twisting the two twisted filaments into twisted filaments for weaving. Tensile tests of different diameter titanium wires (Φ0.10 mm, Φ0.25 mm, and Φ0.50 mm) and PE filaments of monofilament, combined filament and twisted filament were carried out. The results show that the elongation of titanium wire is lower than that of PE wire, especially the Medical Grade Titanium Wire of Φ0.10 mm. The titanium wire (Φ0.25 mm, Φ0.50 mm) in the titanium composite wire broke simultaneously with the surrounding PE, and the titanium wire (Φ0.25 mm) in the titanium twisted wire broke simultaneously with the surrounding PE. It shows that the fishing net twisted into the titanium wire has the same strength as the existing fishing net woven with polyethylene wire.
No comments:
Post a Comment