Marine adhesion prevention biological line for offshore culture platform

Abstract

The invention discloses an anti-sea adhesion biological line for an offshore culture platform, which is prepared from high molecular weight polyethylene resin, a solvent, an antioxidant and a compound anti-sea adhesion biological agent, and the compound anti-sea adhesion biological agent is prepared from an organic polymer anti-sea adhesion biological agent and other organic anti-sea adhesion biological agents. The sea-attached organism preventing line for the offshore culture platform has the remarkable effects of being convenient and safe to use, remarkable in sea-attached organism preventing effect and long in service life, the antibacterial rate reaches 98% or above, and the sea-attached organism preventing line can be applied to the field of offshore culture platforms and can be expanded to be applied to the fields of ocean netting gears, net cages, culture fences and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore aquaculture platforms, and in particular relates to a sea-attachment-proof biological line for offshore aquaculture platforms. Background Art

[0002] Offshore aquaculture platforms refer to facilities used for the cultivation of fish, shellfish and other marine organisms more than 2 nautical miles offshore. These platforms are usually designed for large-scale marine fishery production. The design and construction of these platforms take into account the particularities of the marine environment, such as waves, currents, temperature changes and other factors, to ensure the healthy growth of farmed organisms and the quality of products. The development of offshore aquaculture platforms is of great significance for alleviating offshore aquaculture pressure, exploring deep-sea resources and increasing fishery production. During the aquaculture process of offshore aquaculture platforms, marine fouling organisms will adhere or attach to objects such as lines. The above-mentioned marine fouling organisms include fouling organisms such as algae, bacteria, mussels, oysters and barnacles attached to the lines used for offshore aquaculture platforms. In this field, farmers or aquaculture companies are accustomed to referring to marine fouling organisms attached to the lines used for offshore aquaculture platforms as (sea) attached organisms. The so-called anti-sea attached organism line refers to a line processed and manufactured in this field that has the function of reducing or preventing the attachment of marine attached organisms to offshore aquaculture platforms. The anti-marine biological attachment line is used in the processing of nets or the sewing and connection of nets in offshore aquaculture platforms. It has the function of preventing or reducing the attachment of marine organisms to offshore aquaculture platforms. It is a potential new functional material that has not yet been developed in this field, and is sometimes also called an anti-marine biological attachment line. The so-called anti-marine biological attachment agent refers to an agent prepared and blended in this field that has the function of preventing or reducing the attachment of marine organisms to offshore aquaculture platforms, and is sometimes also called an anti-marine biological attachment agent. The anti-(marine) biological attachment agent can be used in the processing and production of anti-(marine) biological attachment fibers, anti-(marine) biological attachment lines, etc. in this field. It has the function of reducing or preventing (marine) biological attachment from attaching to offshore aquaculture platforms, and is a potential new functional material that has not yet been developed in this field.

[0003] The complex and harsh marine environment has promoted the development and application of high-strength and high-wear-resistant fibers such as high-molecular polyethylene (HMPE) fibers in the field of offshore aquaculture platforms. High-molecular polyethylene (HMPE) fibers are also called ultra-high molecular weight polyethylene fibers. However, HMPE nets (also called ultra-high strength nets or ultra-high molecular weight polyethylene nets by those skilled in the art) are easily attached by marine organisms such as bacteria, algae, and shellfish after being placed in seawater for a period of time, affecting the exchange of water inside and outside the nets of offshore aquaculture platforms, causing the internal environment of the nets of offshore aquaculture platforms to deteriorate, and increasing the risk of fish disease and death. Therefore, the anti-marine attachment biological line for offshore aquaculture platforms has become a material of long-term concern at home and abroad in this field. The intrinsic anti-(marine) attachment biological method of the line is to compound the high-efficiency anti-(marine) attachment biological agent suitable for spinning into special spinning raw materials to prepare a composite fiber and its line material with intrinsic anti-(marine) attachment biological function, which can effectively simplify the workload of anti-(marine) attachment biological in this field, reduce production costs and labor intensity of workers, and improve work efficiency. At the same time, it has a good anti-(marine) attachment biological effect, and has gradually attracted widespread attention. After the intrinsic anti-marine attachment biological line is made into a net, a net intrinsic anti-marine attachment biological method will be constructed. The intrinsic anti-marine attachment biological method of the line and the intrinsic anti-marine attachment biological method of the net are potential new material technologies that have not yet been solved in this field, and it is worth spending a lot of effort to study them in depth.

[0004] In the early stage, the preparation of antibacterial UHMWPE fibers was explored. For example, in the patent application with publication number CN116555932A, polyguanidine graft copolymer powder was added to the UHMWPE spinning suspension to obtain an antibacterial UHMWPE fiber; the above-mentioned UHMWPE fiber and the biological wire of the present invention belong to different technical fields. However, the above-mentioned graft-based polymer material belongs to a contact-type antifouling mechanism. Once the surface is wrapped by attachments, its antifouling performance will be significantly reduced. This is because the antimicrobial activity of the graft is based on direct contact. If the surface of the material is covered with biological attachments, the contact-type antifouling agent cannot directly contact the microorganisms in the water, thereby losing its effectiveness and affecting its long-term antifouling effect. Compared with a single mechanism (contact or release), the contact-release synergistic surface provides a more promising solution for preventing initial bacterial attachment and inhibiting biofilm formation.

[0005] Therefore, directly adding contact-release anti-fouling agents during the production of HMPE fibers is expected to produce HMPE fibers that are durable and resistant to marine fouling. Other organic anti-fouling agents have the advantages of fast sterilization speed and strong sterilization ability; organic polymer anti-fouling agents have the advantages of being non-toxic, easy to process, and having good color stability. The organic polymer anti-fouling agent is prepared together with other organic anti-fouling agents to form a composite anti-fouling agent powder, which is added to the HMPE gel spinning principle to prepare durable anti-fouling HMPE fibers, which are easy to use, have significant anti-fouling effects, and have a long service life. Summary of the invention

[0006] The purpose of the present invention is to provide a sea-attachment-preventing biological line for an offshore aquaculture platform.

[0007] Another object of the present invention is to provide a method for preparing the anti-sea attachment biological line for the offshore aquaculture platform.

[0008] Another object of the present invention is to provide an application of the anti-sea attachment biological line for offshore aquaculture platforms in the preparation of marine ranch materials.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] The first aspect of the present invention provides an anti-sea adhesion biological line for an offshore aquaculture platform, which is prepared from a high molecular weight polyethylene (HMPE) resin, a solvent, an antioxidant, and a compound anti-sea adhesion biological agent. The compound anti-sea adhesion biological agent is prepared from an organic polymer anti-sea adhesion biological agent and other organic anti-sea adhesion biological agents. The mass ratio of the high molecular weight polyethylene (HMPE) resin to the solvent is 1:2 to 30 (preferably 1:13.3, 1:14.7, 1:14.4, 1:9), and the mass ratio of the antioxidant to the high molecular weight polyethylene (HMPE) resin is 1:2 to 30 (preferably 1:13.3, 1:14.7, 1:14.4, 1:9), and the mass ratio of the antioxidant to the high molecular weight polyethylene (HMPE) resin is 1:1 ... The mass percentage of the mass of the polyethylene (HMPE) resin is 0.1% to 1.5% (preferably 0.5%), the mass percentage of the composite anti-marine fouling agent to the total mass of the high molecular weight polyethylene (HMPE) resin and the composite anti-marine fouling agent is 0.1% to 50% (preferably 10%, 15%, 20%, 30%), and the mass percentage of other organic anti-marine fouling agents to the total mass of the organic polymer anti-marine fouling agent and other organic anti-marine fouling agents is 1% to 50% (preferably 2%, 20%, 50%);

[0011] The organic polymer anti-marine biofouling agent is selected from polyhexamethylene monoguanidine hydrochloride grafted polyethylene, polyhexamethylene biguanidine hydrochloride grafted polyethylene, and quaternary ammonium salt grafted polyethylene anti-marine biofouling agent;

[0012] The other organic anti-marine adhesion biological agent is selected from polyethylene zinc pyridoxine sulfate anti-marine adhesion biological masterbatch, polyethylene nano-copper anti-marine adhesion biological masterbatch, polyethylene nano-zinc anti-marine adhesion biological masterbatch, copper pyridoxine sulfate, and zinc pyridoxine sulfate.

[0013] The melt index of the polyhexamethylene guanidine hydrochloride grafted polyethylene is 1.0 g / 10 min, the grafting rate of polyhexamethylene guanidine hydrochloride is 5-20% (preferably 15%, 20%), and the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is selected from 2200J and 6084A.

[0014] The molecular weight of the high molecular weight polyethylene (HMPE) resin is 1 million to 8 million (preferably 6 million, 7 million, 3 million), and the grades are LL-X-600, LL-X-700, and LL-X-300.

[0015] The solvent is selected from at least one of white oil and decalin.

[0016] The antioxidant is selected from at least one of phenolic antioxidants and amine antioxidants, and is preferably antioxidant 1010.

[0017] The brand of polyethylene in the quaternary ammonium salt grafted polyethylene marine biofouling prevention agent is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of the quaternary ammonium salt is 8%.

[0018] The content of zinc pyridoxine sulfate in the polyvinyl pyridoxine zinc sulfate anti-marine adhesion biological masterbatch is 0.1-2% (preferably 1%).

[0019] The content of nano copper in the polyethylene nano copper anti-marine attachment organism masterbatch is 1-10% (preferably 5%).

[0020] The content of nano zinc in the polyethylene nano zinc anti-marine attachment biological masterbatch is 1-10% (preferably 5%).

[0021] The second aspect of the present invention provides a method for preparing the anti-sea attachment biological line for offshore aquaculture platforms, comprising the following steps:

[0022] A high molecular weight polyethylene (HMPE) resin, a solvent, an antioxidant, and a compound anti-marine fouling agent are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (with a diameter of 30 to 120 mm (preferably 60 mm), an aspect ratio of 56 to 72 (preferably 68)), a plasticizing temperature of 260 to 340° C. (preferably 275, 280, 285° C.), and an extrusion temperature of a spinning manifold of 200 to 320° C. (preferably 260° C.); the diameter of the spinneret hole is 0.5 to 1 mm (preferably 0.80 mm); the solvent is removed, and the mixture is dried and stretched; or, dried and stretched; the anti-marine fouling HMPE fiber is obtained; the prepared anti-marine fouling HMPE fiber is woven to obtain the anti-marine fouling line for an offshore aquaculture platform.

[0023] The preparation method of the composite anti-marine biofouling agent comprises the following steps:

[0024] Premixing an organic polymer anti-marine biofouling agent and other organic anti-marine biofouling agents, extruding and granulating, crushing at high speed, and filtering through a filter cloth with 20 to 120 meshes (preferably 40, 60, 80, 100, 110, 120 meshes) to obtain a composite anti-marine biofouling agent;

[0025] Alternatively, the organic polymer anti-marine biofouling agent and other organic anti-marine biofouling agents are crushed at high speed and passed through a filter cloth with 20 to 120 meshes (preferably 40, 60, 80, 100, 110, 120 meshes) to obtain a composite anti-marine biofouling agent.

[0026] The extrusion granulation is performed by extrusion granulation via a co-rotating twin screw at a temperature of 180 to 210° C. (preferably 180 or 190° C.).

[0027] The method for removing the solvent is selected from extraction or direct volatilization of the solvent, and the extractant during extraction is selected from at least one of toluene, xylene, dichloromethane and gasoline.

[0028] The stretching temperature is 100° C. to 160° C. (preferably 130, 135, 140° C.), and the total stretching multiple is 30 to 90 times (preferably 45, 48, 50, 54 times).

[0029] The prepared HMPE fiber for preventing marine fouling organisms is woven by an 8-strand braiding machine, and the number of flower nodes in each 10 cm length of the line ranges from 20 to 45 (preferably 35 or 40).

[0030] The nominal diameter of the anti-sea attachment biological line for offshore aquaculture platforms is selected from 1 to 4 mm (preferably 1.5 mm, 2.5 mm, 3.5 mm).

[0031] The third aspect of the present invention provides a use of the anti-sea attachment biological line for offshore aquaculture platforms in the preparation of marine ranch materials.

[0032] The marine ranch materials are selected from marine ropes, net cages, breeding fences and the like.

[0033] Due to the adoption of the above technical solution, the present invention has the following advantages and beneficial effects:

[0034] The breaking strength range of the anti-sea attachment biological line for offshore aquaculture platforms prepared by the invention is 145-465 daN, and the antibacterial rates to Escherichia coli, Staphylococcus aureus and Candida albicans are all above 98%.

[0035] The anti-sea attachment biological line for offshore aquaculture platforms prepared by the present invention is easy to use, safe, has a significant effect of preventing sea attachment biologicals, and has a long service life. The antibacterial rate reaches more than 98%, and can be applied to the field of offshore aquaculture platforms, and can be expanded to the fields of marine nets, cages, aquaculture fences, etc.

[0036] The present invention can quickly kill or inhibit the marine attached organisms attached to the surface of the line through contact, and prevent the growth and accumulation of new marine attached organisms through a slow release mechanism, so as to construct a highly efficient and long-lasting marine attached organism-proof line material. DETAILED DESCRIPTION

[0037] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. It should be understood by those skilled in the art that the following specific description is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0038] Example 1

[0039] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0040] The first step is to prepare the powder of compound anti-marine biofouling agent

[0041] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene is purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 0.5 kg of copper pyridine sulfate (CPT) are premixed, and the mass percentage of copper pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene and copper pyridine sulfate is 2%; the mixture is extruded and granulated at a temperature of 190° C. by a co-rotating twin-screw extruder, and the mixture is crushed at high speed by a crusher and passed through a 40-mesh filter cloth to obtain 23 kg of a composite anti-marine biofouling agent powder.

[0042] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0043] 15kg of high molecular weight polyethylene (HMPE) resin powder, 200kg of white oil, 0.075kg of antioxidant 1010 and 1.67kg of the compound anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 50 times, to obtain 12kg of anti-marine fouling HMPE fiber.

[0044] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to white oil was 1:13.3; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 10%.

[0045] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0046] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 35 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0047] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 159.7 daN (corresponding to the nominal diameter of the line 1.5 mm), 348 daN (corresponding to the nominal diameter of the line 2.5 mm), and 423.8 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 7.66% (corresponding to the nominal diameter of the line 1.5 mm), 11.5% (corresponding to the nominal diameter of the line 2.5 mm), and 13.47% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥98%.

[0048] Example 2

[0049] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0050] The first step is to prepare the powder of compound anti-marine biofouling agent

[0051] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene is purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 0.5 kg of copper pyridine sulfate are premixed, and the mass percentage of copper pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene and copper pyridine sulfate is 2%; the mixture is extruded and granulated at a temperature of 190° C. by a co-rotating twin-screw extruder, and the mixture is crushed at high speed by a crusher and passed through an 80-mesh filter cloth to obtain 22 kg of a composite anti-marine biofouling agent powder.

[0052] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0053] 15kg HMPE resin powder, 200kg white oil, 0.075kg antioxidant 1010 and 3.75kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 50 times, to obtain 15kg of anti-marine fouling HMPE fiber.

[0054] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to white oil was 1:13.3; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 20%.

[0055] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0056] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0057] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 203.1 daN (corresponding to the nominal diameter of the line 1.5 mm), 335.4 daN (corresponding to the nominal diameter of the line 2.5 mm), and 403.1 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 6.28% (corresponding to the nominal diameter of the line 1.5 mm), 10.59% (corresponding to the nominal diameter of the line 2.5 mm), and 12.84% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%.

[0058] Example 3

[0059] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0060] The first step is to prepare the powder of compound anti-marine biofouling agent

[0061] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene is purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 0.5 kg of copper pyridine sulfate are premixed, and the mass percentage of copper pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene and copper pyridine sulfate is 2%; the mixture is extruded and granulated at a temperature of 190° C. by a co-rotating twin-screw extruder, and the mixture is crushed at high speed by a crusher and passed through an 80-mesh filter cloth to obtain 23 kg of a composite anti-marine biofouling agent powder.

[0062] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0063] 15kg HMPE resin powder, 220kg white oil, 0.075kg antioxidant 1010 and 6.43kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 50 times, to obtain 17kg of anti-marine fouling HMPE fiber.

[0064] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to white oil was 1:14.7; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 30%.

[0065] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0066] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0067] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 247.4 daN (corresponding to the nominal diameter of the line 1.5 mm), 269.6 daN (corresponding to the nominal diameter of the line 2.5 mm), and 305.5 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 6.96% (corresponding to the nominal diameter of the line 1.5 mm), 8.19% (corresponding to the nominal diameter of the line 2.5 mm), and 10.72% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%.

[0068] Example 4

[0069] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0070] The first step is to prepare the powder of compound anti-marine biofouling agent

[0071] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 15%. The polyhexamethylene guanidine hydrochloride grafted polyethylene is purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.), 0.25 kg of copper pyridine sulfate (CPT), and 0.25 kg of zinc pyridine sulfate (ZPT) are premixed. The mass percentage of copper pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene, copper pyridine sulfate and zinc pyridine sulfate is 1%; the mass percentage of zinc pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene, copper pyridine sulfate and zinc pyridine sulfate is 1%; the powder is extruded and granulated by a co-rotating twin-screw extruder at a temperature of 190°C, pulverized at high speed by a pulverizer, and filtered through an 80-mesh filter cloth to obtain 24 kg of a composite anti-marine biofouling agent powder.

[0072] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0073] 15kg HMPE resin powder, 215.8kg white oil, 0.075kg antioxidant 1010 and 1.67kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 54 times, to obtain 14kg of anti-marine fouling HMPE fiber.

[0074] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-700, and a molecular weight of 7 million. The mass ratio of HMPE resin to white oil was 1:14.4; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 10%.

[0075] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0076] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0077] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 181 daN (corresponding to the nominal diameter of the line 1.5 mm), 307.6 daN (corresponding to the nominal diameter of the line 2.5 mm), and 381.9 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 7.1% (corresponding to the nominal diameter of the line 1.5 mm), 10.88% (corresponding to the nominal diameter of the line 2.5 mm), and 12.1% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%.

[0078] Example 5

[0079] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0080] The first step is to prepare the powder of compound anti-marine biofouling agent

[0081] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 15%. The polyhexamethylene guanidine hydrochloride grafted polyethylene is purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.), 0.25 kg of copper pyridine sulfate, and 0.25 kg of zinc pyridine sulfate are premixed, the mass percentage of copper pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene, copper pyridine sulfate, and zinc pyridine sulfate is 1%; the mass percentage of zinc pyridine sulfate to the total mass of polyhexamethylene guanidine hydrochloride grafted polyethylene, copper pyridine sulfate, and zinc pyridine sulfate is 1%; the mixture is extruded and granulated at a temperature of 190° C. by a co-rotating twin-screw extruder, and pulverized at high speed by a pulverizer through a 40-mesh filter cloth to obtain 20 kg of a composite anti-marine biofouling agent powder.

[0082] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0083] 15kg HMPE resin powder, 215.8kg white oil, 0.075kg antioxidant 1010 and 3.75kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 54 times, to obtain 16kg of anti-marine fouling HMPE fiber.

[0084] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-700, and a molecular weight of 7 million. The mass ratio of HMPE resin to white oil was 1:14.4; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 20%.

[0085] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0086] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0087] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 172.1 daN (corresponding to the nominal diameter of the line 1.5 mm), 307.5 daN (corresponding to the nominal diameter of the line 2.5 mm), and 345.1 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 6.35% (corresponding to the nominal diameter of the line 1.5 mm), 8.9% (corresponding to the nominal diameter of the line 2.5 mm), and 11.23% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%.

[0088] Example 6

[0089] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0090] The first step is to prepare the powder of compound anti-marine biofouling agent

[0091] 25kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0g / 10min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene was purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 6.25kg of polyethylene nano-zinc anti-marine adhesion biological masterbatch (purchased from Weihai Hongwei Plastic Co., Ltd.) (the content of nano-zinc in the polyethylene nano-zinc anti-marine adhesion biological masterbatch is 5%) were crushed at high speed by a pulverizer through a 60-mesh filter cloth to obtain 30kg of the composite anti-marine adhesion biological agent powder. The mass percentage of the polyethylene nano-zinc anti-marine adhesion biological masterbatch to the total mass of the polyhexamethylene guanidine hydrochloride grafted polyethylene and the polyethylene nano-zinc anti-marine adhesion biological masterbatch is 20%.

[0092] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0093] 15kg HMPE resin powder, 220kg white oil, 0.075kg antioxidant 1010 and 3.75kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the diameter of the spinneret hole is 0.80mm; the solvent is extracted and removed, the extractant is xylene, and the fiber is dried and stretched, the stretching temperature is 135℃, and the total stretching multiple is about 54 times, to obtain 14kg of anti-marine fouling HMPE fiber.

[0094] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to white oil was 1:14.7; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 20%.

[0095] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0096] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0097] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 224.1 daN (corresponding to the nominal diameter of the line 1.5 mm), 304.1 daN (corresponding to the nominal diameter of the line 2.5 mm), and 312.9 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 5.67% (corresponding to the nominal diameter of the line 1.5 mm), 9.65% (corresponding to the nominal diameter of the line 2.5 mm), and 11.73% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥98%.

[0098] Example 7

[0099] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0100] The first step is to prepare the powder of compound anti-marine biofouling agent

[0101] 25kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0g / 10min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene was purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 6.25kg of polyethylene nano-copper anti-marine adhesion biological masterbatch (purchased from Weihai Hongwei Plastic Co., Ltd.) (the content of nano-copper in the polyethylene nano-copper anti-marine adhesion biological masterbatch is 5%) were crushed at high speed by a pulverizer and filtered through a 60-mesh filter cloth to obtain 30kg of a composite anti-marine adhesion biological agent powder. The mass percentage of the polyethylene nano-copper anti-marine adhesion biological masterbatch to the total mass of the polyhexamethylene guanidine hydrochloride grafted polyethylene and the polyethylene nano-copper anti-marine adhesion biological masterbatch is 20%.

[0102] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0103] 15kg HMPE resin powder, 220kg decalin, 0.075kg antioxidant 1010 and 3.75kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 280℃, the spinning box extrusion temperature is 260℃; the aperture of the spinneret is 0.80mm; drying and stretching, the stretching temperature is 140℃, the total stretching multiple is about 48 times, and 15kg of anti-marine fouling HMPE fiber is obtained.

[0104] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to decalin is 1:14.7; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin is 0.5%; the mass percentage of the composite anti-marine fouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine fouling agent powder obtained in the first step is 20%.

[0105] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0106] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0107] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 195 daN (corresponding to the nominal diameter of the line 1.5 mm), 358.6 daN (corresponding to the nominal diameter of the line 2.5 mm), and 424.9 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 5.41% (corresponding to the nominal diameter of the line 1.5 mm), 9.54% (corresponding to the nominal diameter of the line 2.5 mm), and 14.29% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%.

[0108] Example 8

[0109] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0110] The first step is to prepare the powder of compound anti-marine biofouling agent

[0111] 25kg of quaternary ammonium salt grafted polyethylene anti-marine adhesion biological agent (the brand of polyethylene in the quaternary ammonium salt grafted polyethylene anti-marine adhesion biological agent is 6480A, the melt index is 1.0g / 10min, and the grafting rate of quaternary ammonium salt is 8%. The quaternary ammonium salt grafted polyethylene anti-marine adhesion biological agent was purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) and 25kg of polyethylene pyridine zinc sulfate anti-marine adhesion biological masterbatch (purchased from Weihai Hongwei Plastic Co., Ltd.) (the content of zinc pyridine sulfate in the polyethylene pyridine zinc sulfate anti-marine adhesion biological masterbatch is 1%) were crushed at high speed by a pulverizer through a 60-mesh filter cloth to obtain 45kg of the composite anti-marine adhesion biological agent powder. The mass percentage of the polyethylene pyridine zinc sulfate anti-marine adhesion biological masterbatch to the total mass of the quaternary ammonium salt grafted polyethylene anti-marine adhesion biological agent and the polyethylene pyridine zinc sulfate anti-marine adhesion biological masterbatch is 50%.

[0112] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0113] 15kg HMPE resin powder, 135kg decalin, 0.075kg antioxidant 1010 and 2.65kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 275℃, the spinning box extrusion temperature is 260℃; the aperture of the spinneret is 0.80mm; drying and stretching, the stretching temperature is 130℃, the total stretching multiple is about 45 times, and 15kg of anti-marine fouling HMPE fiber is obtained.

[0114] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with the brand name LL-X-300, and the molecular weight of HMPE resin was 3 million. The mass ratio of HMPE resin to decalin was 1:9; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 15%.

[0115] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0116] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0117] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 194.7 daN (corresponding to the nominal diameter of the line 1.5 mm), 359.9 daN (corresponding to the nominal diameter of the line 2.5 mm), and 465 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 5.68% (corresponding to the nominal diameter of the line 1.5 mm), 10.05% (corresponding to the nominal diameter of the line 2.5 mm), and 11.61% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥98%.

[0118] Comparative Example 1

[0119] HMPE fiber preparation:

[0120] 15kg HMPE resin powder, 220kg white oil and 0.075kg antioxidant 1010 were mixed and emulsified to obtain a spinning solution, which was fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), with a plasticizing temperature of 285°C and a spinning box extrusion temperature of 260°C; the diameter of the spinneret hole was 0.80mm; the solvent was removed by extraction, with dichloromethane as the extractant; the fiber was dried and stretched, with a stretching temperature of 140°C and a total stretching multiple of about 50 times, to obtain 13kg of HMPE fiber for preventing marine fouling organisms.

[0121] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with the brand name LL-X-600, and the molecular weight of HMPE resin was 6 million. The mass ratio of HMPE resin to white oil was 1:14.7; the mass percentage of antioxidant 1010 to the mass of HMPE resin was 0.5%.

[0122] The prepared HMPE fiber for preventing marine fouling was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0123] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 234.6 daN (corresponding to the nominal diameter of the line 1.5 mm), 381.9 daN (corresponding to the nominal diameter of the line 2.5 mm), and 498N (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 4.23% (corresponding to the nominal diameter of the line 1.5 mm), 15.02% (corresponding to the nominal diameter of the line 2.5 mm), and 16.7% (corresponding to the nominal diameter of the line 3.5 mm). It has no antibacterial effect on Escherichia coli, Staphylococcus aureus, and Candida albicans.

[0124] Comparative Example 2

[0125] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0126] The first step is to prepare the powder of compound anti-marine biofouling agent

[0127] 25 kg of polyhexamethylene guanidine hydrochloride grafted polyethylene (the grade of polyethylene in the polyhexamethylene guanidine hydrochloride grafted polyethylene is 6480A, the melt index is 1.0 g / 10 min, and the grafting rate of polyhexamethylene guanidine hydrochloride is 20%. The polyhexamethylene guanidine hydrochloride grafted polyethylene was purchased from Guilin Xinxianli Antibacterial Materials Co., Ltd.) was crushed at high speed by a pulverizer and passed through a 40-mesh filter cloth to obtain 23 kg of a composite anti-marine biofouling agent powder.

[0128] Step 2: Preparation of HMPE fiber to prevent marine fouling

[0129] 15kg HMPE resin powder, 220kg white oil, 0.075kg antioxidant 1010 and 1.67kg of the composite anti-marine fouling agent powder obtained in the first step are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the extrusion temperature of the spinning box is 260℃; the aperture of the spinneret is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 50 times, to obtain 15kg of anti-marine fouling HMPE fiber.

[0130] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with a brand name of LL-X-600, and a molecular weight of 6 million. The mass ratio of HMPE resin to white oil was 1:14.7; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of the composite anti-marine biofouling agent powder obtained in the first step to the total mass of HMPE resin and the composite anti-marine biofouling agent powder obtained in the first step was 10%.

[0131] Step 3: Preparation of anti-sea biofilm line for offshore aquaculture platforms

[0132] The HMPE fiber for preventing marine fouling prepared in the second step was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0133] The prepared anti-sea attachment biological line for offshore aquaculture platforms has a breaking strength of 200 daN (corresponding to a nominal diameter of 1.5 mm), 381.2 daN (corresponding to a nominal diameter of 2.5 mm), and 470 daN (corresponding to a nominal diameter of 3.5 mm), and a breaking elongation of 8.32% (corresponding to a nominal diameter of 1.5 mm), 12.62% (corresponding to a nominal diameter of 2.5 mm), and 14.21% (corresponding to a nominal diameter of 3.5 mm). The antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥94%.

[0134] Comparative Example 3

[0135] A method for preparing a sea-attachment-proof biological line for an offshore aquaculture platform comprises the following steps:

[0136] The first step is the preparation of HMPE fiber to prevent marine fouling

[0137] 15kg HMPE resin powder, 220kg white oil, 0.075kg antioxidant 1010 and 1.67kg copper pyridine sulfate powder are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder (diameter 60mm, aspect ratio 68), the plasticizing temperature is 285℃, the spinning box extrusion temperature is 260℃; the spinneret hole diameter is 0.80mm; the solvent is extracted and removed, the extractant is dichloromethane, and the fiber is dried and stretched, the stretching temperature is 140℃, and the total stretching multiple is about 50 times, to obtain 15kg HMPE fiber for preventing marine fouling organisms.

[0138] HMPE resin powder was purchased from Shanghai Lianle Chemical Technology Co., Ltd., with the brand name LL-X-600, and the molecular weight of HMPE resin was 6 million. The mass ratio of HMPE resin to white oil was 1:14.7; the mass percentage of antioxidant 1010 to the mass percentage of HMPE resin was 0.5%; the mass percentage of copper pyridine sulfate powder to the total mass of HMPE resin and copper pyridine sulfate powder was 10%.

[0139] The second step is the preparation of anti-sea biofilm lines for offshore aquaculture platforms.

[0140] The prepared HMPE fiber for preventing marine fouling was woven by an 8-strand braiding machine, with 40 flower nodes in every 10 cm length of the line, to obtain marine fouling prevention lines for offshore aquaculture platforms with nominal diameters of 1.5 mm, 2.5 mm, and 3.5 mm, respectively.

[0141] The breaking strength of the prepared anti-sea attachment biological line for offshore aquaculture platforms is 185 daN (corresponding to the nominal diameter of the line 1.5 mm), 365.6 daN (corresponding to the nominal diameter of the line 2.5 mm), and 435.6 daN (corresponding to the nominal diameter of the line 3.5 mm), and the breaking elongation is 8.24% (corresponding to the nominal diameter of the line 1.5 mm), 12.12% (corresponding to the nominal diameter of the line 2.5 mm), and 14.56% (corresponding to the nominal diameter of the line 3.5 mm), and the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥95%.

[0142] Effect verification: The anti-marine biofouling effect of the products prepared in the examples and comparative examples was tested with reference to the standard of "Antibacterial Knitwear". The test data are shown in Table 1:

[0143] Table 1 Comparison of the effect of preventing marine fouling organisms

[0144]

[0145]

[0146] According to the data in Table 1, in Examples 1 to 8, the organic polymer anti-sea attachment biological agent and other organic anti-sea attachment biological agents are used together to prepare a composite anti-sea attachment biological agent powder, which is added to the HMPE resin for spinning to prepare the anti-sea attachment biological HMPE fiber, and then prepared into an anti-sea attachment biological line for offshore aquaculture platforms, and the antibacterial rate of Escherichia coli, Staphylococcus aureus, and Candida albicans is above 98%. In Comparative Example 1, since no composite anti-sea attachment biological agent powder is added, there is no antibacterial rate for Escherichia coli, Staphylococcus aureus, and Candida albicans. In Comparative Example 2, since only the organic polymer anti-sea attachment biological agent exists, the antibacterial rate for Escherichia coli, Staphylococcus aureus, and Candida albicans is low. In Comparative Example 3, since only other anti-sea attachment biological agents exist, the antibacterial rate for Escherichia coli, Staphylococcus aureus, and Candida albicans is low. Therefore, the present invention solves the problem of low efficiency of HMPE fiber for anti-sea attachment biologicals, and the anti-sea attachment biological effect is significant.

[0147] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A sea-attachment-preventing biological line for an offshore aquaculture platform, characterized in that: The invention is prepared from high molecular weight polyethylene resin, solvent, antioxidant and compound anti-marine fouling agent, wherein the compound anti-marine fouling agent is prepared from organic polymer anti-marine fouling agent and other organic anti-marine fouling agent, the mass ratio of high molecular weight polyethylene resin to solvent is 1:2-30, the mass percentage of the antioxidant to the mass percentage of the high molecular weight polyethylene resin is 0.1%-1.5%, the mass percentage of the compound anti-marine fouling agent to the total mass of the high molecular weight polyethylene resin and the compound anti-marine fouling agent is 0.1%-50%, and the mass percentage of other organic anti-marine fouling agent to the mass percentage of the organic polymer anti-marine fouling agent and other organic anti-marine fouling agent is 1-50%; The organic polymer anti-marine biofouling agent is selected from polyhexamethylene monoguanidine hydrochloride grafted polyethylene, polyhexamethylene biguanidine hydrochloride grafted polyethylene, and quaternary ammonium salt grafted polyethylene anti-marine biofouling agent; The other organic anti-marine adhesion biological agent is selected from polyethylene zinc pyridoxine sulfate anti-marine adhesion biological masterbatch, polyethylene nano-copper anti-marine adhesion biological masterbatch, polyethylene nano-zinc anti-marine adhesion biological masterbatch, copper pyridoxine sulfate, and zinc pyridoxine sulfate.

2. The anti-sea attachment biological line for offshore aquaculture platform according to claim 1, characterized in that: The molecular weight of the high molecular weight polyethylene resin is 1 to 8 million; The solvent is selected from at least one of white oil and decalin.

3. The anti-sea attachment biological line for offshore aquaculture platform according to claim 1, characterized in that: The antioxidant is selected from at least one of phenolic antioxidants and amine antioxidants; The content of zinc pyridoxine sulfate in the polyvinyl pyridoxine zinc sulfate anti-marine adhesion biological masterbatch is 0.1-2%.

4. The anti-sea attachment biological line for offshore aquaculture platform according to claim 1, characterized in that: The content of nano copper in the polyethylene nano copper anti-marine attachment organism masterbatch is 1-10%; The content of nano zinc in the polyethylene nano zinc anti-sea attachment biological masterbatch is 1-10%.

5. A method for preparing the anti-sea attachment biological line for offshore aquaculture platforms according to any one of claims 1 to 4, characterized in that: The following steps are involved: A high molecular weight polyethylene resin, a solvent, an antioxidant, and a compound anti-marine fouling agent are mixed and emulsified to obtain a spinning solution, and the spinning solution is fed into a twin-screw extruder, the plasticizing temperature is 260-340°C, and the extrusion temperature of the spinning box is 200-320°C; the diameter of the spinneret hole is 0.5-1mm; the solvent is removed, and the mixture is dried and stretched; or, dried and stretched; the anti-marine fouling HMPE fiber is obtained; the prepared anti-marine fouling HMPE fiber is woven to obtain the anti-marine fouling line for the offshore aquaculture platform.

6. The method for preparing the anti-sea attachment biological line for offshore aquaculture platform according to claim 5, characterized in that: The preparation method of the composite anti-marine biofouling agent comprises the following steps: Premixing the organic polymer anti-marine biofouling agent and other organic anti-marine biofouling agents, extruding and granulating, high-speed crushing, and filtering through a 20-120 mesh filter cloth to obtain a compound anti-marine biofouling agent; Alternatively, the organic polymer anti-marine biofouling agent and other organic anti-marine biofouling agents are crushed at high speed and passed through a filter cloth with 20 to 120 meshes to obtain a composite anti-marine biofouling agent.

7. The method for preparing the anti-sea attachment biological line for offshore aquaculture platform according to claim 6, characterized in that: The extrusion granulation is carried out by extrusion granulation through a co-rotating twin screw at a temperature of 180 to 210°C; The method for removing the solvent is selected from extraction or direct volatilization of the solvent, and the extractant during extraction is selected from at least one of toluene, xylene, dichloromethane and gasoline.

8. The method for preparing the anti-sea attachment biological line for offshore aquaculture platform according to claim 5, characterized in that: The stretching temperature is 100° C. to 160° C., and the total stretching multiple is 30 to 90 times.

9. The method for preparing the anti-sea attachment biological line for offshore aquaculture platform according to claim 5, characterized in that: The prepared HMPE fiber for preventing marine fouling is woven by an 8-strand braiding machine, and the number of flower nodes in each 10 cm length of the wire ranges from 20 to 45; The nominal diameter of the anti-sea attachment biological line for the offshore aquaculture platform is selected from 1 to 4 mm.

10. Use of the anti-sea attachment biological line for offshore aquaculture platforms according to any one of claims 1 to 4 in the preparation of marine ranch materials.

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