Ultrahigh molecular weight polyethylene submerged fishing line

Abstract

The invention belongs to the technical field of high-performance fibers, and particularly relates to an ultra-high molecular weight polyethylene submerged fishing line which is prepared by swelling a skin structure and a core structure and then spinning, the skin structure is an ultra-high molecular weight polyethylene skin layer which contains a hydrophilic polymer aid and accounts for 5-40% of the mass of the skin structure, and the core structure is an ultra-high molecular weight polyethylene core layer which accounts for 5-40% of the mass of the core structure. The core structure is an ultra-high molecular weight polyethylene core layer which contains nano inorganic powder and accounts for 60-95% of the mass of the core structure. Through the unique design of the skin part structure and the core part structure, the fishing line can naturally sink in water, the sinking performance of the ultra-high molecular weight polyethylene fishing line is achieved, the fishing experience feeling is greatly improved, the problems that in the prior art, a sinking PE fishing line is large in production difficulty and poor in effect are solved, and the production cost is reduced. The comprehensive performance and the user experience of the fishing line are remarkably improved, and the fishing line has a wide market application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of high-performance fibers, and in particular relates to an ultra-high molecular weight polyethylene sinking fishing line. Background Art

[0002] High-performance fibers are chemical fibers with special physical and chemical structures, properties and uses, or special functions, especially ultra-high molecular weight polyethylene fibers, which are widely used in safety protection products and marine fishery products due to their high strength, high modulus and high orientation. Ultra-high molecular weight polyethylene fishing lines are widely used in the field of fishing due to their high strength, light weight, wear resistance and corrosion resistance. At present, ultra-high molecular weight polyethylene fishing lines are made by weaving N strands of ultra-high molecular weight polyethylene filament fibers into a line that is not easy to loosen. Although the ultra-high tensile force and ultra-high wear resistance of the fishing line are guaranteed, it is very easy to sink in the water because its relative density is smaller than that of water, which seriously affects the fishing experience.

[0003] There are studies in the prior art on the problem that the current ultra-high molecular weight polyethylene fishing line cannot sink in the water due to its low relative density, such as patent application CN210782611U-a submersible PE fishing line, which mixes and weaves one or more strands of PTFE filament fibers on the basis of the production process of N strands of UHMWPE filament fibers, so that it becomes heavier while maintaining ultra-high strength and ultra-high wear resistance, solving the problem that the current ultra-high molecular weight polyethylene fishing line cannot sink in the water due to its low relative density, affecting the fishing experience. However, although the existing submersible PE fishing line can ensure the fishing experience, since the strength of UHMWPE fiber is much greater than that of PTFE, it is difficult to actually produce and operate, which seriously affects the production effect and efficiency of the submersible fishing line. To this end, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide an ultra-high molecular weight polyethylene submersible fishing line to solve the problems raised in the above background technology that the current submersible PE fishing line is difficult to operate in the actual production process, which seriously affects the production effect and efficiency of the submersible fishing line.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an ultra-high molecular weight polyethylene submersible fishing line, which is prepared by a spinning process after swelling of a skin structure and a core structure, wherein the skin structure is an ultra-high molecular weight polyethylene skin layer containing a hydrophilic polymer additive and accounting for 5 to 40% by weight, and the core structure is an ultra-high molecular weight polyethylene core layer containing nano-inorganic powder and accounting for 60 to 95% by weight.

[0006] Furthermore, the raw material components of the ultra-high molecular weight polyethylene cortex include a hydrophilic polymer additive, a PE processing aid and an ultra-high molecular weight polyethylene powder, wherein the hydrophilic polymer additive is at least one of polyvinyl pyrrolidone, water-soluble polyester, and alcohol-soluble nylon, or a combination thereof, the PE processing aid is an antioxidant and a lubricant, the antioxidant is antioxidant 1010, antioxidant 168 and antioxidant 225, and the lubricant is white oil.

[0007] Furthermore, the raw material components of the ultra-high molecular weight polyethylene core layer include a true density of >1g / cm 3 Nano inorganic powder, PE processing aid and ultra-high molecular weight polyethylene powder, wherein the nano inorganic powder is one of nano calcium carbonate powder and nano barium sulfate powder, the PE processing aid is an antioxidant and a lubricant, wherein the antioxidant is antioxidant 1010, antioxidant 168 and antioxidant 225, and the lubricant is white oil.

[0008] According to the above-mentioned ultra-high molecular weight polyethylene skin layer and ultra-high molecular weight polyethylene core layer, swelling is followed by a spinning process to prepare an ultra-high molecular weight polyethylene submersible fishing line, the specific preparation steps of which are as follows: first, the ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are respectively mixed with an alkylbenzene solution in a mass ratio of 5-40:60-95 by a mixer, and then at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier is used to uniformly mix them again to obtain a swollen skin material and a swollen core material; secondly, the swollen skin material and the swollen core material are respectively dissolved by a twin-screw extruder at high temperature and then sprayed out into filaments through a spinning box and a spinneret assembly; then, the sprayed filaments are gelled in a cooling and shaping water tank with countercurrent cold water to form jelly filaments; finally, the jelly filaments are pulled into a jelly filament barrel for balance, and then pre-stretched, extracted, dried, and hot stretched to obtain fishing fibers, i.e., an ultra-high molecular weight polyethylene submersible fishing line.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts ultra-high molecular weight polyethylene as the preparation process of the basic material of the skin-core structure, so that the preparation process of the submersible fishing line can be simplified, and the operation difficulty of the submersible fishing line in the actual production process is effectively reduced. Compared with the submersible PE fishing line in the prior art, the present invention effectively avoids the problem of complicated production process caused by weaving fibers of different properties, reduces production costs, ensures high strength and wear resistance of the submersible fishing line, and improves the market competitiveness of the product. By adding a hydrophilic polymer additive to the ultra-high molecular weight polyethylene skin layer, the interaction between the fiber and water is effectively enhanced, which is helpful for the deep processing (such as gluing and coloring) of the submersible fishing line in the later stage. By adding nano inorganic powder to the ultra-high molecular weight polyethylene core layer, the specific gravity of the fiber is effectively increased, so that the submersible fishing line can sink naturally in the water, the sinking performance of the fishing line is realized, and the fishing experience is greatly improved, thereby ensuring the actual production effect and efficiency of the submersible fishing line; 2. The present invention adopts at least one of polyvinyl pyrrolidone, water-soluble polyester, alcohol-soluble nylon or a combination thereof as a hydrophilic polymer additive, which not only makes the skin structure have good hydrophilicity, but also has good compatibility with ultra-high molecular weight polyethylene powder, ensures the stability and functionality of the skin structure, and is conducive to the deep processing of the submerged fishing line in the later stage; 3. The present invention adopts true density>1g / cm 3 Nano calcium carbonate powder or nano barium sulfate powder is used as nano inorganic powder, which makes the core structure have high true density and good dispersibility, effectively improving the specific gravity of the sinking fishing line, while not affecting the high strength and wear resistance of the sinking fishing line, so that the sinking fishing line can sink naturally in the water, realizing the sinking performance of the fishing line, and greatly improving the fishing experience; 4. The preparation process of the ultra-high molecular weight polyethylene submersible fishing line of the present invention combines advanced spinning technology, and ensures the quality stability and production efficiency of the fishing line by accurately controlling the raw material ratio, mixing uniformity, swelling conditions and spinning process parameters. The uniform distribution of the skin structure and the core structure is achieved through the high-temperature dissolution of the twin-screw and the precise control of the spinning box spinneret assembly, which further improves the comprehensive performance of the submersible fishing line; 5. The ultra-high molecular weight polyethylene submersible fishing line of the present invention has the characteristics of innovative structural design, optimized raw material selection, efficient preparation process and reduced production difficulty. It not only solves the problems of high production difficulty and poor effect of submersible PE fishing line in the prior art, but also significantly improves the comprehensive performance and user experience of the fishing line, and has broad market application prospects. DETAILED DESCRIPTION

[0010] The following examples are used to further illustrate the content of the present invention, but do not limit the application of the present invention. Embodiment 1:

[0011] This embodiment provides an ultra-high molecular weight polyethylene sinking fishing line, and the specific preparation steps are as follows: Select 0.5kg of K30 polyvinyl pyrrolidone (the dosage of hydrophilic polymer additives is 0.1-30%), 0.2kg of antioxidant 1010, antioxidant 168, and antioxidant 225 (the dosage of PE processing additives is 0.1-2%), 98.9kg of ultra-high molecular weight polyethylene powder, and 1900kg of white oil as the ultra-high molecular weight polyethylene skin layer; Select the true density as 2.8g / cm 3 10kg of nano calcium carbonate powder (the dosage of nano inorganic powder is calculated based on the true density and the design density of the sinking fishing line), 0.2kg of antioxidant 1010, antioxidant 168 and antioxidant 225, 89.4kg of ultra-high molecular weight polyethylene powder, and 1900kg of white oil as the ultra-high molecular weight polyethylene core layer; The ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are respectively mixed with the alkylbenzene solution in a mass ratio of 40:60 by a mixer, and then mixed again by at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier to obtain a skin swelling material and a core swelling material (the use of two mixings not only improves the uniformity of the mixing, but also improves the reliability and stability of the swelling material during dissolution), and then the skin swelling material and the core swelling material are respectively introduced into a skin-core twin-screw extruder for high-temperature extrusion and dissolution to obtain a spinning solution, and then the spinning solution is melted through a spinning box and sprayed out through a skin-core spinning assembly. The filaments enter a cooling and shaping water tank with cold water countercurrent and gel to form a frozen gel thread. The frozen gel thread will be pulled to the silk outlet roller and the swinging screw rod by a double water tank bottom roller and a double triple roller, and then fall into a frozen gel thread barrel. After balancing, the fishing fiber is prepared by pre-stretching, extraction, drying, and hot stretching, i.e., an ultra-high molecular weight polyethylene submersible fishing line, and its density is 1.0516 g / cm 3 . Embodiment 2:

[0012] This embodiment provides an ultra-high molecular weight polyethylene sinking fishing line, and the specific preparation steps are as follows: 0.5 kg of K30 polyvinyl pyrrolidone, 0.2 kg of antioxidant 1010, antioxidant 168, antioxidant 225, 98.9 kg of ultra-high molecular weight polyethylene powder, and 1900 kg of white oil were selected as the ultra-high molecular weight polyethylene skin layer; Select the true density as 2.8g / cm 3 10kg of nano calcium carbonate powder, 0.2kg of antioxidant 1010, antioxidant 168, antioxidant 225, 89.4kg of ultra-high molecular weight polyethylene powder, and 1900kg of white oil as the ultra-high molecular weight polyethylene core layer; The ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are respectively mixed with alkylbenzene solution in a mass ratio of 5:95 by a mixer, and then at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier is used to uniformly mix them again to obtain a skin swelling material and a core swelling material. Then, the skin swelling material and the core swelling material are respectively sent into a skin-core twin-screw extruder for high-temperature extrusion and dissolution to obtain a spinning solution. The spinning solution is then melted through a spinning box and then sprayed out through a skin-core spinneret assembly. The filaments enter a cooling and shaping water tank with cold water countercurrent and gel to form frozen gel threads. The frozen gel threads are pulled to the silk outlet roller and the swinging screw rod by a double water tank bottom roller and a double triple roller, and then fall into a frozen gel thread barrel. After balancing, they are pre-stretched, extracted, dried, and hot-stretched to obtain fishing fiber, i.e., ultra-high molecular weight polyethylene submersible fishing line, with a density of 1.1167 g / cm 3 . Embodiment 3:

[0013] This embodiment provides an ultra-high molecular weight polyethylene sinking fishing line, and the specific preparation steps are as follows: 0.5 kg of K30 polyvinyl pyrrolidone, 0.2 kg of antioxidant 1010, antioxidant 168, antioxidant 225, 98.9 kg of ultra-high molecular weight polyethylene powder, and 1900 kg of white oil were selected as the ultra-high molecular weight polyethylene skin layer; Select the true density as 4.5g / cm 3 10kg of nano barium sulfate powder, 0.2kg of antioxidant 1010, antioxidant 168, antioxidant 225, 89.4kg of ultra-high molecular weight polyethylene powder, and 1900kg of white oil as the ultra-high molecular weight polyethylene core layer; The ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are respectively mixed with alkylbenzene solution in a mass ratio of 40:60 by a mixer, and then at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier is used to uniformly mix them again to obtain a skin swelling material and a core swelling material. Then, the skin swelling material and the core swelling material are respectively sent into a skin-core twin-screw extruder for high-temperature extrusion and dissolution to obtain a spinning solution. The spinning solution is then melted through a spinning box and then sprayed out through a skin-core spinneret assembly. The filaments enter a cooling and shaping water tank with cold water countercurrent and gel to form frozen gel threads. The frozen gel threads are pulled to the silk outlet roller and the swinging screw rod by a double water tank bottom roller and a double triple roller, and then fall into a frozen gel thread barrel. After balancing, the fishing fiber is prepared through pre-stretching, extraction, drying, and hot stretching, i.e., an ultra-high molecular weight polyethylene submersible fishing line, and its density is 1.1536 g / cm 3 . Embodiment 4:

[0014] This embodiment provides an ultra-high molecular weight polyethylene sinking fishing line, and the specific preparation steps are as follows: 0.5 kg of K30 polyvinyl pyrrolidone, 0.2 kg of antioxidant 1010, antioxidant 168, antioxidant 225, 98.9 kg of ultra-high molecular weight polyethylene powder, and 1900 kg of white oil were selected as the ultra-high molecular weight polyethylene skin layer; Select the true density as 4.5g / cm 3 10kg of nano barium sulfate powder, 0.2kg of antioxidant 1010, antioxidant 168, antioxidant 225, 89.4kg of ultra-high molecular weight polyethylene powder, and 1900kg of white oil as the ultra-high molecular weight polyethylene core layer; The ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are respectively mixed with alkylbenzene solution in a mass ratio of 5:95 by a mixer, and then are uniformly mixed again by at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier to obtain a skin swelling material and a core swelling material. The skin swelling material and the core swelling material are then respectively sent into a skin-core twin-screw extruder for high-temperature extrusion and dissolution to obtain a spinning solution. The spinning solution is then melted through a spinning box and then sprayed out through a skin-core spinneret assembly. The filaments enter a cooling and shaping water tank with cold water countercurrent and gel to form frozen gel threads. The frozen gel threads are pulled to the silk outlet roller and the swinging screw rod by a double water tank bottom roller and a double triple roller, and then fall into a frozen gel thread barrel. After balancing, the fishing fiber is prepared by pre-stretching, extraction, drying, and hot stretching, i.e., an ultra-high molecular weight polyethylene submersible fishing line, and its density is 1.2526 g / cm 3 .

[0015] To sum up, the present invention enables the fishing line to sink naturally in the water through the unique skin structure and core structure design, realizes the sinking performance of ultra-high molecular weight polyethylene fishing line, greatly improves the fishing experience, and not only solves the problems of difficulty in producing sinking PE fishing line and poor effect in the prior art, but also significantly improves the comprehensive performance and user experience of the fishing line, and has broad market application prospects.

Claims

1. An ultra-high molecular weight polyethylene sinking fishing line, characterized in that: The submersible fishing line is prepared by a spinning process after swelling of a skin structure and a core structure, wherein the skin structure is an ultra-high molecular weight polyethylene skin layer containing a hydrophilic polymer additive and accounting for 5 to 40% by weight, and the core structure is an ultra-high molecular weight polyethylene core layer containing nano inorganic powder and accounting for 60 to 95% by weight.

2. The ultra-high molecular weight polyethylene submersible fishing line according to claim 1, characterized in that: The raw material components of the ultra-high molecular weight polyethylene skin layer include a hydrophilic polymer additive, a PE processing additive and ultra-high molecular weight polyethylene powder.

3. The ultra-high molecular weight polyethylene submersible fishing line according to claim 2, characterized in that: The hydrophilic polymer auxiliary agent is at least one of polyvinyl pyrrolidone, water-soluble polyester, alcohol-soluble nylon or a combination thereof.

4. The ultra-high molecular weight polyethylene submersible fishing line according to claim 2, characterized in that: The PE processing aids are antioxidants and lubricants, wherein the antioxidants are antioxidant 1010, antioxidant 168 and antioxidant 225, and the lubricant is white oil.

5. The ultra-high molecular weight polyethylene submersible fishing line according to claim 1, characterized in that: The raw material components of the ultra-high molecular weight polyethylene core layer include nano inorganic powder, PE processing aid and ultra-high molecular weight polyethylene powder.

6. The ultra-high molecular weight polyethylene submersible fishing line according to claim 5, characterized in that: The true density of the nano inorganic powder is >1g / cm 3 .

7. The ultra-high molecular weight polyethylene submersible fishing line according to claim 6, characterized in that: The nano inorganic powder is one of nano calcium carbonate powder and nano barium sulfate powder.

8. The ultra-high molecular weight polyethylene submersible fishing line according to claim 5, characterized in that: The PE processing aids are antioxidants and lubricants, wherein the antioxidants are antioxidant 1010, antioxidant 168 and antioxidant 225, and the lubricant is white oil.

9. The ultra-high molecular weight polyethylene submersible fishing line according to claim 1, characterized in that: The specific preparation steps of the ultra-high molecular weight polyethylene submersible fishing line are as follows: first, the ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are uniformly mixed with alkylbenzene solution in a mass ratio of 5-40:60-95 to obtain a skin swelling material and a core swelling material; second, the skin swelling material and the core swelling material are respectively dissolved by a twin-screw at high temperature and then sprayed out into filaments through a spinning box and a spinneret assembly; then, the sprayed filaments are gelled in a cooling and shaping water tank with cold water countercurrent to form jelly filaments; finally, the jelly filaments are pulled into a jelly filament barrel for balance, and then pre-stretched, extracted, dried, and hot-stretched to obtain fishing fibers, i.e., the ultra-high molecular weight polyethylene submersible fishing line.

10. The method for preparing an ultra-high molecular weight polyethylene submersible fishing line according to claim 9, characterized in that: When the ultra-high molecular weight polyethylene skin layer and the ultra-high molecular weight polyethylene core layer are mixed with the alkylbenzene solution respectively, they must first be uniformly mixed in a mixer, and then uniformly mixed again using at least one of a sand mill, a high-pressure homogenizer, and a high-speed emulsifier.