Fire-resistant and wear-resistant wire cable
By preparing modified polypropylene materials and combining them with specific additives, the problems of wear resistance and flame retardancy of cables in areas with large temperature differences were solved, improving the fire resistance and wear resistance of cables and ensuring safety.
Patent Information
- Application Number
- CN202511377833.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2025-12-02
AI Technical Summary
Existing polypropylene-based cable protection pipes are difficult to meet the requirements of harsh working conditions in terms of wear resistance and flame retardancy. They are prone to wear, especially when used in areas with large temperature differences. Furthermore, traditional materials have insufficient flame retardancy when flames spread, posing safety hazards.
Fire-resistant and wear-resistant wires and cables are prepared by using modified polypropylene materials, which contain allyloxytrimethylsilane, propylene, catalyst, hydrochloric acid and benzoic acid, in a high-pressure reactor, and then combined with brominated flame retardants, talc and anti-dripping agents.
In environments with large diurnal and seasonal temperature differences, the cable exhibits excellent flame retardancy and wear resistance, extending its service life and reducing safety hazards.
Smart Images
Figure CN121045441A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of refractory and wear-resistant material preparation technology, and specifically relates to a refractory and wear-resistant wire and cable. Background Technology
[0002] Fire-resistant and wear-resistant cables play a crucial role in modern power transmission and safety systems, especially in high-rise buildings, petrochemical plants, and rail transportation systems where safety requirements are extremely high. Modern buildings utilize a large amount of organic chemical materials; in the event of a fire, the flames are intense and the temperatures are extremely high (sometimes exceeding 1000°C). Traditional cables may not be able to maintain power transmission under such harsh conditions, leading to the failure of fire protection systems (such as alarms, smoke exhaust fans, and emergency lighting), endangering personnel safety and property protection. During installation and use, cables are often subjected to dragging, bending, compression, and friction with other surfaces. In industrial environments, they may also come into contact with oil, chemicals, or be damaged by rodents and ants. These physical and chemical abrasions can damage the cable's insulation or sheath, not only shortening its lifespan but also potentially causing short circuits, leakage, and other safety accidents.
[0003] The development of cable technology has largely benefited from the progress of materials science. From early mineral-insulated cables (such as magnesium oxide insulated copper-sheathed cables, which have good fire resistance but are expensive and rigid) to the application of flexible fire-resistant materials such as synthetic mica tape and ceramicized silicone rubber, and then to modified polymers and their use in sheaths, material innovation has continuously driven the improvement of cable performance.
[0004] While widely used polypropylene (PP) based cable protection pipes exhibit good performance in terms of strength, toughness, ring stiffness, and aging resistance, their wear resistance and flame retardancy often fail to meet the stringent requirements of demanding working conditions. Especially in areas with large temperature differences and significant annual temperature variations, and with the increasing prevalence of open-cut traction construction (such as horizontal directional drilling), the pipeline experiences intense friction with sand and gravel during pullback, easily leading to surface wear and even structural damage, directly impacting its long-term service performance. Furthermore, if the cable inside the pipe catches fire due to an accidental short circuit, the insufficient flame retardancy of traditional protection pipes may not effectively prevent the spread of flames, posing a certain safety hazard. To address these issues, we propose a fire-resistant and wear-resistant cable. Summary of the Invention
[0005] The purpose of this invention is to provide a fire-resistant and wear-resistant wire and cable to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A type of fire-resistant and wear-resistant wire and cable raw material includes those with Polypropylene with groups.
[0007] Preferably, the raw materials for preparing polypropylene include propylene, allyloxytrimethylsilane, and benzoic acid.
[0008] Preferably, the raw materials for preparing polypropylene include 10-80 parts propylene; 10-80 parts of allyloxytrimethylsilane; Catalyst 0.1-0.5 parts; 20-150 parts hydrochloric acid; Benzoic acid 10-50 parts.
[0009] Preferably, the preparation steps of polypropylene include: S1: In a high-pressure reactor, the system is repeatedly evacuated and filled with nitrogen to remove air, moisture and other impurities. Then, an appropriate amount of allyloxytrimethylsilane is introduced and stirred. Titanium chloride is added again, followed by alkyl aluminum chloride, and the reaction is carried out. After the reaction is completed, the first intermediate product is obtained. S2: Add an appropriate amount of ethanol and antioxidant to the first intermediate product, stir, then add hydrochloric acid solution, and after the reaction is complete, the second intermediate product is obtained. S3: Add benzoic acid to the second intermediate to obtain the final product.
[0010] Preferably, the reaction process conditions in step S1 are as follows: dried allyloxytrimethylsilane is introduced under negative pressure and ambient temperature; after adding propylene, the stirring speed is 60-100 r / min and the time is 2-30 min; after adding titanium chloride and alkyl aluminum chloride, the stirring speed is 60-100 r / min, the reaction temperature is 60-100℃, and the reaction time is 2-6 h.
[0011] Preferably, after adding ethanol and antioxidant in step S2, the stirring speed is 60-100 r / min, the reaction temperature is 80-120℃, and the reaction time is 2-10 min.
[0012] Preferably, the hydrochloric acid concentration is 20-40%.
[0013] Preferably, in step S2, after adding hydrochloric acid, the reaction temperature is 60-80℃, and the reaction time is 2-8 hours.
[0014] Preferably, the reaction conditions in step S3 are: a reaction temperature of 100-140℃ and a reaction time of 2-6.
[0015] Compared with the prior art, the beneficial effects of the present invention are: the wires and cables prepared by the present invention have excellent flame retardancy and high wear resistance when used for a long time in environments with large day-night temperature differences and large seasonal temperature differences. Detailed Implementation
[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1
[0017] Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 10 parts of dried allyloxytrimethylsilane were introduced, followed by 10 parts of propylene. The mixture was stirred at 60 r / min for 2 min. Then, 0.1 parts of titanium chloride and 0.15 parts of alkylaluminum chloride were added and stirred at 60 r / min. The reaction temperature was 60 °C and the reaction was carried out for 2 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 10 parts of ethanol and 1 part of antioxidant 1010 to the first intermediate product, stir at a stirring speed of 60 r / min, react at 80℃ for 2 min, then add 20 parts of 20% hydrochloric acid solution, react at 60℃ for 2 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 10 parts of benzoic acid to the second intermediate product, react at 100℃ for 2 hours to obtain the final product.
[0018] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts brominated flame retardant brominated styrene, 5 parts antimony trioxide, 0.3 parts anti-dripping agent PTFE, and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 170°C and a speed of 300 r / min. The extruded product is a wire and cable sheathing material.
[0019] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding. Example 2
[0020] Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 80 parts of dried allyloxytrimethylsilane were introduced, followed by 80 parts of propylene and stirred at 100 r / min for 30 min. Then, 0.5 parts of titanium chloride and 0.5 parts of alkylaluminum chloride were added and stirred at 100 r / min. The reaction temperature was 100℃ and the reaction was carried out for 6 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 50 parts of ethanol and 5 parts of antioxidant 1076 to the first intermediate product, stir at a stirring speed of 100 r / min, react at a reaction temperature of 120℃ for 10 min, then add 20-150 parts of 40% hydrochloric acid solution, react at a reaction temperature of 80℃ for 8 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 50 parts of benzoic acid to the second intermediate product, react at 140℃ for 6 hours to obtain the final product.
[0021] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 220°C and a speed of 500 r / min. The extruded product is a wire and cable sheathing material.
[0022] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding. Example 3
[0023] Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried allyloxytrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction was carried out at 80 °C for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts of benzoic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0024] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0025] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0026] Comparative Example 1: Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried vinyltrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction temperature was 80℃ and the reaction was carried out for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts of benzoic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0027] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0028] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0029] Comparative Example 2: Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried allyloxytrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction was carried out at 80 °C for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts of stearic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0030] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0031] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0032] Comparative Example 3: Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried allyloxytrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction was carried out at 80 °C for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts palmitic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0033] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0034] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0035] Comparative Example 4: Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried allyloxytrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction was carried out at 80 °C for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts of oleic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0036] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0037] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0038] Comparative Example 5: Preparation of polypropylene: S1: In a high-pressure reactor, the system was repeatedly evacuated and purged with nitrogen to remove air, moisture, and other impurities. Under negative pressure and ambient temperature, 60 parts of dried comparative vinyltrimethylsilane were introduced, followed by 50 parts of propylene. The mixture was stirred at 80 r / min for 15 min. Then, 0.3 parts of titanium chloride and 0.3 parts of alkylaluminum chloride were added and stirred at 80 r / min. The reaction temperature was 80 °C and the reaction was carried out for 5 h. After the reaction was completed, the first intermediate product was obtained. S2: Add 30 parts of ethanol and 3 parts of antioxidant 1098 to the first intermediate product, stir at a stirring speed of 70 r / min, react at a temperature of 100℃ for 4 min, then add 100 parts of 30% hydrochloric acid solution, react at a temperature of 70℃ for 5 h, and after the reaction is complete, the second intermediate product is obtained. S3: Add 30 parts palmitic acid to the second intermediate product, react at 130℃ for 4 hours to obtain the final product.
[0039] Preparation of wire and cable sheathing materials: Take 45 portions of the prepared product containing Polypropylene with a functional group, 25 parts PP (RP271G), 15 parts talc, 15 parts decabromodiphenyl ethane (a brominated flame retardant), 5 parts antimony trioxide, 0.3 parts PTFE (an anti-dripping agent), and 1 part silicone powder are fed into a twin-screw extruder at a temperature of 200°C and a speed of 400 r / min. The extruded product is a wire and cable sheathing material.
[0040] Preparation of wires and cables: The wire core and the wire / cable are fed into the extruder, and the wire / cable is completed after molding.
[0041] Performance testing: Fire resistance test: Fifteen samples were taken from the wires and cables prepared in Examples 1-3 and Comparative Examples 1-5, respectively, and placed outdoors in the southern Xinjiang region to test the flame retardancy of the samples at the initial stage, 12 months, and 24 months. Abrasion resistance was tested according to the UL94 flame retardancy rating test standard.
[0042] Abrasion resistance test: Fifteen samples of the wires and cables prepared in Examples 1-3 and Comparative Examples 1-5 were taken and placed outdoors in the southern Xinjiang region. The abrasion resistance of the samples was tested at the initial stage, 12 months and 24 months. The abrasion resistance test was performed using the Taber abrasion test of ASTM D4060.
[0043] Table 1 Test Results
[0044] The results above show that the flame retardancy level of Examples 1-3 is the optimal V0 level at the initial stage, 12 months, and 24 months. Furthermore, the wear amount at 12 months and 24 months is not significantly different from that at the initial stage, indicating that the wires and cables prepared in Examples 1-3 have stable flame retardancy and wear resistance.
[0045] The comparison between Examples 1-3 and Comparative Example 1 shows that, initially, Comparative Example 1 had similar wear resistance and flame retardancy to Examples 1-3. After 12 months, its wear resistance decreased significantly, while its flame retardancy remained unchanged. After 24 months, its wear resistance and flame retardancy decreased very significantly.
[0046] The comparison between Examples 1-3 and Comparative Example 2 shows that, initially, Comparative Example 2 had similar abrasion resistance and flame retardancy to Examples 1-3, but its abrasion resistance and flame retardancy decreased significantly after 12 and 24 months.
[0047] The comparison between Examples 1-3 and Comparative Example 3 shows that, initially, Comparative Example 3 has similar wear resistance and flame retardancy to Examples 1-3. After 12 months, its flame retardancy is significantly lower than that of Examples 1-3, but its wear resistance is similar to that of Examples 1-3. However, after 24 months, its wear resistance and flame retardancy decrease significantly.
[0048] The comparison between Examples 1-3 and Comparative Example 4 shows that, initially, Comparative Example 4 has similar wear resistance and flame retardancy to Examples 1-3. After 12 months, its flame retardancy is significantly lower than that of Examples 1-3, but its wear resistance is similar to that of Examples 1-3. However, after 24 months, its wear resistance and flame retardancy decrease significantly.
[0049] The comparison between Examples 1-3 and Comparative Example 5 shows that, initially, Comparative Example 5 has similar wear resistance and flame retardancy to Examples 1-3. After 12 months, its flame retardancy is slightly worse than that of Examples 1-3, but its wear resistance is similar to that of Examples 1-3. However, after 24 months, its wear resistance and flame retardancy decrease significantly.
[0050] The comparison between Comparative Example 4 and Comparative Example 2 / 3 shows that the flame retardant performance of Comparative Example 4 is significantly affected by time.
[0051] Although embodiments of the invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fire-resistant and wear-resistant wire and cable, characterized in that: The raw materials of the wires and cables include those containing... Polypropylene with groups.
2. The fire-resistant and wear-resistant wire and cable according to claim 1, characterized in that: The raw materials for preparing the polypropylene include propylene, allyloxytrimethylsilane, and benzoic acid.
3. The fire-resistant and wear-resistant wire and cable according to claim 2, characterized in that: The raw materials for preparing the polypropylene include 10-80 parts propylene; 10-80 parts of allyloxytrimethylsilane; Titanium chloride 0.1-0.5 parts; 20-150 parts hydrochloric acid; Benzoic acid 10-50 parts.
4. The fire-resistant and wear-resistant wire and cable according to claim 3, characterized in that: The preparation steps of the polypropylene include: S1: In a high-pressure reactor, the system is repeatedly evacuated and filled with nitrogen to remove air, moisture and other impurities. Then, an appropriate amount of allyloxytrimethylsilane is introduced and stirred. Titanium chloride is added again, followed by alkyl aluminum chloride, and the reaction is carried out. After the reaction is completed, the first intermediate product is obtained. S2: Add an appropriate amount of ethanol and antioxidant to the first intermediate product, stir, then add hydrochloric acid solution, and after the reaction is complete, the second intermediate product is obtained. S3: Add benzoic acid to the second intermediate to obtain the final product.
5. The fire-resistant and wear-resistant wire and cable according to claim 3, characterized in that: The reaction conditions in step S1 are as follows: dried allyloxytrimethylsilane is introduced under negative pressure and ambient temperature; after adding propylene, the stirring speed is 60-100 r / min and the time is 2-30 min; after adding titanium chloride and alkyl aluminum chloride, the stirring speed is 60-100 r / min, the reaction temperature is 60-100℃, and the reaction time is 2-6 h.
6. The fire-resistant and wear-resistant wire and cable according to claim 3, characterized in that: In step S2, after adding ethanol and antioxidant, the stirring speed is 60-100 r / min, the reaction temperature is 80-120℃, and the reaction time is 2-10 min.
7. A fire-resistant and wear-resistant wire and cable according to claim 3, characterized in that, The concentration of the hydrochloric acid is 20-40%.
8. A fire-resistant and wear-resistant wire and cable according to claim 3, characterized in that, After adding hydrochloric acid in step S2, the reaction temperature is 60-80℃, and the reaction time is 2-8 hours.
9. A fire-resistant and wear-resistant wire and cable according to claim 1, characterized in that: The reaction conditions in step S3 are as follows: reaction temperature is 100-140℃, and reaction time is 2-6h.