Flame-retardant cable for ship
By using a thermoplastic polyurethane elastomer in a ship cable, a combination of mullite modified and silane coupling fiber agent is combined with a combination of fiber agent for a ship cable, the problem of coordinated improvement of flame retardant properties and mechanical properties of ship cables is solved, and the heat resistance and stability of the cable is improved.
Patent Information
- Application Number
- CN202510520453.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2025-07-29
AI Technical Summary
The existing marine cable materials have poor flame retardant properties, and the mechanical properties and cold and heat resistance of the cable after adding flame retardant are affected, making it difficult to achieve coordinated improvements.
The thermoplastic polyurethane elastomer is used to combine mullite modified and silane-coupled fiber agent with polyvinyl chloride, and a specific preparation method is used to prepare mullite modified and silane-coupled fiber agent, combining inorganic magnesium hydroxide flame retardant and antioxidant to form a flame retardant cable.
The coordinated improvement of the flame retardant performance and mechanical properties of the cable is achieved, and the product's cold and heat resistance is significantly improved.
Smart Images
Figure SMS_1
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of flame-retardant cables, and particularly to a flame-retardant cable for ships. Background Art
[0002] A cable is a device for transmitting electrical energy or signals. It usually consists of several or several groups of wires and has the characteristics of internal power conduction and external insulation. Cables can be used to transmit electrical (magnetic) energy and information and achieve the conversion of electromagnetic energy. They are widely used in fields such as urban underground power grids, outgoing lines from power stations, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas.
[0003] The materials used in existing ship cables have poor flame-retardant performance. In order to optimize the flame-retardant performance, flame retardants are added, which instead reduces the mechanical properties of the cables. It is very difficult to achieve coordinated improvement of cable flame retardancy and mechanical properties, and the product has poor cold and heat stability, which limits the use efficiency of the product. Summary of the Invention
[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a flame-retardant cable for ships to solve the problems raised in the above background art.
[0005] The present invention adopts the following technical solutions to solve the technical problems: The present invention provides a flame-retardant cable for ships, comprising the following raw materials in parts by weight: 50 - 60 parts of thermoplastic polyurethane elastomer, 10 - 20 parts of polyvinyl chloride, 5 - 10 parts of mullite modifier, 4 - 6 parts of inorganic magnesium hydroxide flame retardant, 4 - 7 parts of silane coupling combined fiber agent, 2 - 5 parts of antioxidant 168, and 2 - 5 parts of polyethylene wax.
[0006] Preferably, the flame-retardant cable for ships comprises the following raw materials in parts by weight: 55 parts of thermoplastic polyurethane elastomer, 15 parts of polyvinyl chloride, 7.5 parts of mullite modifier, 5 parts of inorganic magnesium hydroxide flame retardant, 5.5 parts of silane coupling combined fiber agent, 3.5 parts of antioxidant 168, and 3.5 parts of polyethylene wax.
[0007] Preferably, the preparation method of the mullite modifier is as follows: S1: Heat-treat mullite at 150 - 160 °C for 10 min, then cool it to 55 °C at a rate of 1 - 3 °C / min and keep it warm to obtain the heat-preserved mullite; Ultrasonically improve the heat-preserved mullite and the modifier according to a weight ratio of 3:5. After the ultrasonic treatment ends, obtain the improved mullite agent; The modifier comprises the following raw materials in parts by weight: 2 - 5 parts of sodium carboxymethyl cellulose, 1 - 2 parts of nano-silica sol, 5 - 8 parts of lanthanum chloride solution, and 2 - 3 parts of titanium dioxide; S2: Blend 2-5 parts of barium sulfate, 1-3 parts of boron nitride and 5-8 parts of sodium citrate solution to obtain a ball mill; The improved mullite agent and the ball milling agent are ball milled in a weight ratio of 7:5. After the ball milling is completed, the product is filtered and dried to obtain a mullite modified body.
[0008] Preferably, the ultrasonic improvement treatment has an ultrasonic power of 350-400W and an ultrasonic treatment time of 20 minutes; the ball milling treatment has a ball milling speed of 1000-1500 r / min and a ball milling time of 1 hour.
[0009] Preferably, the mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium citrate solution is 5-8%.
[0010] Preferably, the preparation method of the silane coupling combined fiber agent is: S1a: preheating silicon carbide fiber at 55-60° C. for 1 hour to obtain preheated silicon carbide fiber, and thoroughly mixing the preheated silicon carbide fiber, mica powder, and sodium lignin sulfonate solution in a weight ratio of 2:5:7 to obtain a fiber solution; S1b: 2-5 parts of silane coupling agent, 1-3 parts of urea solution and 5-8 parts of fiber liquid are fully mixed, and then filtered and dried to obtain a silane coupling combined fiber agent.
[0011] Preferably, the mass fraction of the sodium lignin sulfonate solution is 2-5%; the mass fraction of the urea solution is 4-6%.
[0012] Preferably, the silane coupling agent is silane coupling agent KH560.
[0013] Preferably, the flame-retardant cable is prepared by mixing the raw materials thoroughly, melting and blending them at 160° C., and then extruding them to obtain a flame-retardant cable for ships.
[0014] Compared with the prior art, the present invention has the following beneficial effects: The flame-retardant cable of the present invention adopts thermoplastic polyurethane elastomer combined with polyvinyl chloride, and adds mullite modifier, silane coupling combined fiber agent, and functional additives such as flame retardant, so as to obtain a cable product with coordinated improvement of cable flame retardancy and mechanical properties, and significant effect of product resistance to cold and heat stability. The mullite modifier is prepared by thermally modifying mullite to optimize its activity performance, and then improving the modifier. The raw materials in the modifier are mixed and matched with each other, and then ball-milled together with a ball mill to enhance the performance coordination and stability of the product in the system. At the same time, the silane coupling combined fiber agent adopts silicon carbide fiber, which is mixed with mica powder and sodium lignin sulfonate solution, and then further improved with a silane coupling agent and a urea solution. The obtained silane coupling combined fiber agent is more excellent in coordination with the mullite modifier, thereby further improving the performance of the product. DETAILED DESCRIPTION
[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0016] A flame-retardant cable for ships according to this embodiment includes the following raw materials in parts by weight: 50-60 parts of thermoplastic polyurethane elastomer, 10-20 parts of polyvinyl chloride, 5-10 parts of mullite modifier, 4-6 parts of inorganic magnesium hydroxide flame retardant, 4-7 parts of silane coupling combined fiber agent, 2-5 parts of antioxidant 168, and 2-5 parts of polyethylene wax.
[0017] The flame-retardant cable for ships of this embodiment includes the following raw materials in parts by weight: 55 parts of thermoplastic polyurethane elastomer, 15 parts of polyvinyl chloride, 7.5 parts of mullite modifier, 5 parts of inorganic magnesium hydroxide flame retardant, 5.5 parts of silane coupling combined fiber agent, 3.5 parts of antioxidant 168, and 3.5 parts of polyethylene wax.
[0018] The preparation method of the mullite modified body of this embodiment is: S1: heat treating the mullite at 150-160°C for 10 min, then cooling to 55°C at a rate of 1-3°C / min, and keeping the temperature to obtain heat-insulated mullite; The heat-insulated mullite and the modified body are subjected to ultrasonic improvement treatment in a weight ratio of 3:5, and the ultrasonic treatment is completed to obtain an improved mullite agent; The modified body includes the following raw materials in parts by weight: 2-5 parts of sodium carboxymethyl cellulose, 1-2 parts of nano-silica sol, 5-8 parts of lanthanum chloride solution and 2-3 parts of titanium dioxide; S2: Blend 2-5 parts of barium sulfate, 1-3 parts of boron nitride and 5-8 parts of sodium citrate solution to obtain a ball mill; The improved mullite agent and the ball milling agent are ball milled in a weight ratio of 7:5. After the ball milling is completed, the product is filtered and dried to obtain a mullite modified body.
[0019] In the ultrasonic improvement treatment of this embodiment, the ultrasonic power is 350-400W, and the ultrasonic treatment is performed for 20 minutes. The ball milling speed is 1000-1500 r / min, and the ball milling is performed for 1 hour.
[0020] The mass fraction of the lanthanum chloride solution in this embodiment is 2-5%; the mass fraction of the sodium citrate solution is 5-8%.
[0021] The preparation method of the silane coupling combined fiber agent of this embodiment is: S1a: preheating silicon carbide fiber at 55-60° C. for 1 hour to obtain preheated silicon carbide fiber, and thoroughly mixing the preheated silicon carbide fiber, mica powder, and sodium lignin sulfonate solution in a weight ratio of 2:5:7 to obtain a fiber solution; S1b: 2-5 parts of silane coupling agent, 1-3 parts of urea solution and 5-8 parts of fiber liquid are fully mixed, and then filtered and dried to obtain a silane coupling combined fiber agent.
[0022] Preferably, the mass fraction of the sodium lignin sulfonate solution is 2-5%; the mass fraction of the urea solution is 4-6%.
[0023] The silane coupling agent in this embodiment is silane coupling agent KH560.
[0024] The preparation method of the flame-retardant cable of this embodiment is as follows: the raw materials are mixed thoroughly, melt-blended at 160° C., and then extruded to obtain the flame-retardant cable for ships.
[0025] Example 1. A flame-retardant cable for ships according to this embodiment includes the following raw materials in parts by weight: 50 parts of thermoplastic polyurethane elastomer, 10 parts of polyvinyl chloride, 5 parts of mullite modifier, 4 parts of inorganic magnesium hydroxide flame retardant, 4 parts of silane coupling combined fiber agent, 2 parts of antioxidant 168, and 2 parts of polyethylene wax.
[0026] The preparation method of the mullite modified body of this embodiment is: S1: heat-treating the mullite at 150°C for 10 min, then cooling to 55°C at a rate of 1°C / min, and keeping the temperature to obtain heat-treated mullite; The heat-insulated mullite and the modified body are subjected to ultrasonic improvement treatment in a weight ratio of 3:5, and the ultrasonic treatment is completed to obtain an improved mullite agent; The modified body includes the following raw materials in parts by weight: 2 parts of sodium carboxymethyl cellulose, 1 part of nano-silica sol, 5 parts of lanthanum chloride solution and 2 parts of titanium dioxide; S2: Blend 2 parts of barium sulfate, 1 part of boron nitride, and 5 parts of sodium citrate solution thoroughly to obtain a ball milling agent. The improved mullite agent and the ball milling agent are ball milled in a weight ratio of 7:5. After the ball milling is completed, filter by suction and dry to obtain a mullite modified body.
[0027] In this embodiment, the ultrasonic power for the ultrasonic improvement treatment is 350 W, and the ultrasonic treatment lasts for 20 min; the ball milling speed for the ball milling treatment is 1000 r / min, and the ball milling lasts for 1 h.
[0028] In this embodiment, the mass fraction of the lanthanum chloride solution is 2%; the mass fraction of the sodium citrate solution is 5%.
[0029] The preparation method of the silane coupling combined fiber agent in this embodiment is as follows: S1a: Preheat silicon carbide fibers at 55°C for 1 h to obtain preheated silicon carbide fibers. Mix the preheated silicon carbide fibers, mica powder, and sodium lignosulfonate solution thoroughly in a weight ratio of 2:5:7 to obtain a fiber solution. S1b: Blend 2 parts of silane coupling agent, 1 part of urea solution, and 5 parts of fiber solution thoroughly, then filter by suction and dry to obtain a silane coupling combined fiber agent.
[0030] In this embodiment, the mass fraction of the sodium lignosulfonate solution is 2%; the mass fraction of the urea solution is 4%.
[0031] The silane coupling agent in this embodiment is silane coupling agent KH560.
[0032] The preparation method of the flame retardant cable in this embodiment is: Mix the raw materials thoroughly, then melt and blend them at 160°C and extrude them into shape to obtain a marine flame retardant cable.
[0033] Example 2. A marine flame retardant cable in this embodiment comprises the following raw materials in parts by weight: 60 parts of thermoplastic polyurethane elastomer, 20 parts of polyvinyl chloride, 10 parts of mullite modified body, 6 parts of inorganic magnesium hydroxide flame retardant, 7 parts of silane coupling combined fiber agent, 5 parts of antioxidant 168, and 5 parts of polyethylene wax.
[0034] The preparation method of the mullite modified body in this embodiment is as follows: S1: Heat treat mullite at 160°C for 10 min, then cool it to 55°C at a rate of 3°C / min and keep it warm to obtain heat-preserved mullite. Perform ultrasonic improvement treatment on the heat-preserved mullite and the modifier in a weight ratio of 3:5. After the ultrasonic treatment is completed, obtain an improved mullite agent. The modifier comprises the following raw materials in parts by weight: 5 parts of sodium carboxymethylcellulose, 2 parts of nano-silica sol, 8 parts of lanthanum chloride solution and 3 parts of titanium dioxide; S2: Mix 5 parts of barium sulfate, 3 parts of boron nitride and 8 parts of sodium citrate solution thoroughly to obtain a ball milling agent; The improved mullite agent and the ball milling agent are ball milled in a weight ratio of 7:5. After the ball milling is completed, filtration and drying are carried out to obtain a mullite modified body.
[0035] In this example, the ultrasonic power for ultrasonic improvement treatment is 400 W, and the ultrasonic treatment is carried out for 20 min; the ball milling speed for ball milling treatment is 1500 r / min, and the ball milling is carried out for 1 h.
[0036] In this example, the mass fraction of the lanthanum chloride solution is 5%; the mass fraction of the sodium citrate solution is 8%.
[0037] The preparation method of the silane coupling combined fiber agent in this example is as follows: S1a: Preheat silicon carbide fibers at 60 °C for 1 h to obtain preheated silicon carbide fibers. Mix the preheated silicon carbide fibers, mica powder and sodium lignosulfonate solution thoroughly in a weight ratio of 2:5:7 to obtain a fiber solution; S1b: Mix 5 parts of silane coupling agent, 3 parts of urea solution and 8 parts of fiber solution thoroughly, and then carry out filtration and drying to obtain a silane coupling combined fiber agent.
[0038] In this example, the mass fraction of the sodium lignosulfonate solution is 5%; the mass fraction of the urea solution is 6%.
[0039] The silane coupling agent in this example is silane coupling agent KH560.
[0040] The preparation method of the flame retardant cable in this example is: Mix the raw materials thoroughly, and then carry out melt blending at 160 °C and extrusion molding to obtain a marine flame retardant cable.
[0041] Example 3. A marine flame retardant cable in this example includes the following raw materials in parts by weight: 55 parts of thermoplastic polyurethane elastomer, 15 parts of polyvinyl chloride, 7.5 parts of mullite modified body, 5 parts of inorganic magnesium hydroxide flame retardant, 5.5 parts of silane coupling combined fiber agent, 3.5 parts of antioxidant 168, 3.5 parts of polyethylene wax.
[0042] The preparation method of the mullite modified body in this example is: S1: Heat treat mullite at 155 °C for 10 min, then cool it to 55 °C at a rate of 2 °C / min and keep it warm to obtain the mullite kept warm; Carry out ultrasonic improvement treatment on the mullite kept warm and the modified body in a weight ratio of 3:5. After the ultrasonic treatment is completed, an improved mullite agent is obtained; The modified body comprises the following raw materials in parts by weight: 3.5 parts of sodium carboxymethyl cellulose, 1.5 parts of nano-silica sol, 6.5 parts of lanthanum chloride solution and 2.5 parts of titanium dioxide; S2: Mix 3.5 parts of barium sulfate, 2 parts of boron nitride and 6.5 parts of sodium citrate solution thoroughly to obtain a ball milling agent; The improved mullite agent and the ball milling agent are ball milled in a weight ratio of 7:5. After the ball milling is completed, filtration and drying are carried out to obtain a mullite modified body.
[0043] In this example, the ultrasonic power for ultrasonic improvement treatment is 375 W, and the ultrasonic treatment is carried out for 20 min; the ball milling speed for ball milling treatment is 1250 r / min, and the ball milling is carried out for 1 h.
[0044] In this example, the mass fraction of the lanthanum chloride solution is 3.5%; the mass fraction of the sodium citrate solution is 6.5%.
[0045] The preparation method of the silane coupling combined fiber agent in this example is as follows: S1a: Preheat silicon carbide fibers at 57 °C for 1 h to obtain preheated silicon carbide fibers. Mix the preheated silicon carbide fibers, mica powder and sodium lignosulfonate solution thoroughly in a weight ratio of 2:5:7 to obtain a fiber solution; S1b: Mix 3.5 parts of silane coupling agent, 2 parts of urea solution and 6.5 parts of fiber solution thoroughly, and then carry out filtration and drying to obtain a silane coupling combined fiber agent.
[0046] In this example, the mass fraction of the sodium lignosulfonate solution is 3.5%; the mass fraction of the urea solution is 5%.
[0047] The silane coupling agent in this example is silane coupling agent KH560.
[0048] The preparation method of the flame retardant cable in this example is: Mix the raw materials thoroughly, and then carry out melt blending at 160 °C and extrude to obtain a marine flame retardant cable.
[0049] Comparative Example 1. The difference from Example 3 is that the mullite modified body is not added.
[0050] Comparative Example 2. The difference from Example 3 is that the modifier is not added in the preparation of the mullite modified body.
[0051] Comparative Example 3. The difference from Example 3 is that titanium dioxide and nano-silica sol are not added to the modifier.
[0052] Comparative Example 4. The difference from Example 3 is that the ball milling agent treatment is not adopted in the preparation of the mullite modified body.
[0053] Comparative Example 5 The difference from Example 3 is that no silane coupling agent for fibers was added.
[0054] Comparative Example 6 The difference from Example 3 is that mica powder and sodium lignosulfonate solution were not added to the fiber solution.
[0055] The product performances of Examples 1 - 3 and Comparative Examples 1 - 6 of the present invention were tested, including the flame retardancy, mechanical properties of the cable, and the thermal stability of the product.
[0056]
[0057] It can be seen from Examples 1 - 3 and Comparative Examples 1 - 5 that the products of the present invention have excellent flame retardancy and tensile strength properties, and the thermal stability of the products is remarkable. When one of the mullite modifiers and the silane coupling agent for fibers is not added to the product, the performance of the product changes significantly. Also, when the modifier is not added during the preparation of the mullite modifier, titanium dioxide and nano - silica sol are not added to the modifier, the ball - milling agent is not used during the preparation of the mullite modifier, and mica powder and sodium lignosulfonate solution are not added to the fiber solution, the performance of the product shows a trend of getting worse to varying degrees. Only when the mullite modifier and the silane coupling agent for fibers obtained by the specific method of the present invention are coordinated together, the performance effect of the product is the most remarkable.
[0058] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.
[0059] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A flame-retardant cable for ships, characterized in that, It includes the following raw materials in parts by weight: 50 - 60 parts of thermoplastic polyurethane elastomer, 10 - 20 parts of polyvinyl chloride, 5 - 10 parts of mullite modifier, 4 - 6 parts of inorganic magnesium hydroxide flame retardant, 4 - 7 parts of silane coupling combined fiber agent, 2 - 5 parts of antioxidant 168, 2 - 5 parts of polyethylene wax.
2. The flame-retardant cable for ships according to claim 1, characterized in that, The flame-retardant cable for ships includes the following raw materials in parts by weight: 55 parts of thermoplastic polyurethane elastomer, 15 parts of polyvinyl chloride, 7.5 parts of mullite modifier, 5 parts of inorganic magnesium hydroxide flame retardant, 5.5 parts of silane coupling combined fiber agent, 3.5 parts of antioxidant 168, 3.5 parts of polyethylene wax.
3. The flame-retardant cable for ships according to claim 2, wherein, The preparation method of the mullite modifier is as follows: S1: Heat-treat mullite at 150 - 160 °C for 10 min, then cool it to 55 °C at a rate of 1 - 3 °C / min and keep it warm to obtain the heat-preserved mullite; Perform ultrasonic improvement treatment on the heat-preserved mullite and the modifier according to a weight ratio of 3:
5. After the ultrasonic treatment ends, obtain the improved mullite agent; The modifier includes the following raw materials in parts by weight: 2 - 5 parts of sodium carboxymethylcellulose, 1 - 2 parts of nano-silica sol, 5 - 8 parts of lanthanum chloride solution, and 2 - 3 parts of titanium dioxide; S2: Mix 2 - 5 parts of barium sulfate, 1 - 3 parts of boron nitride, and 5 - 8 parts of sodium citrate solution thoroughly to obtain a ball-milling agent; Perform ball-milling treatment on the improved mullite agent and the ball-milling agent according to a weight ratio of 7:
5. After the ball-milling ends, filter and dry to obtain the mullite modifier.
4. The flame-retardant cable for ships according to claim 3, wherein, The ultrasonic power of the ultrasonic improvement treatment is 350 - 400 W, and the ultrasonic treatment lasts for 20 min; the ball-milling speed of the ball-milling treatment is 1000 - 1500 r / min, and the ball-milling lasts for 1 h.
5. The flame-retardant cable for ships according to claim 3, wherein, The mass fraction of the lanthanum chloride solution is 2 - 5%; the mass fraction of the sodium citrate solution is 5 - 8%.
6. The flame-retardant cable for ship according to claim 3, wherein, The preparation method of the silane coupling combined fiber agent is as follows: S1a: Preheat silicon carbide fiber at 55 - 60 °C for 1 h to obtain the preheated silicon carbide fiber. Mix the preheated silicon carbide fiber, mica powder, and sodium lignosulfonate solution thoroughly according to a weight ratio of 2:5:7 to obtain a fiber solution; S1b: Mix 2 - 5 parts of silane coupling agent, 1 - 3 parts of urea solution, and 5 - 8 parts of the fiber solution thoroughly, then filter and dry to obtain the silane coupling combined fiber agent.
7. The flame-retardant cable for ships according to claim 6, characterized in that, The mass fraction of the sodium lignosulfonate solution is 2 - 5%; the mass fraction of the urea solution is 4 - 6%.
8. The flame-retardant cable for ships according to claim 6, wherein, The silane coupling agent is silane coupling agent KH560.
9. The flame-retardant cable for ships according to claim 6, wherein The preparation method of the flame-retardant cable is: Mix the raw materials thoroughly, then perform melt blending at 160 °C and extrude and mold to obtain the flame-retardant cable for ships.