Cable filling flame-retardant composite fiber paper rope

Abstract

The invention discloses a cable filling flame-retardant composite fiber paper rope, and belongs to the technical field of cable filling paper ropes. The invention discloses a cable filling flame-retardant composite fiber paper rope which is mainly used as a cable filling material in the electric power industry, the cable industry and the communication industry. The composite fiber paper string comprises the following components: an inorganic material composition, an organic material composition, a modified inorganic flame retardant, an organic flame retardant, an antioxidant, an ultraviolet light absorber and a processing aid. According to the composite fiber paper rope, the aluminum silicate fiber, the expanded perlite, the polypropylene fiber and the polyester fiber are reasonably proportioned, the modified inorganic flame retardant and the organic flame retardant are combined for use, and a wet-process forming and cross-linking curing process is adopted, so that the prepared composite fiber paper rope has excellent flame retardance, good mechanical strength and ageing resistance. The material can improve the safety and durability of the cable, is suitable for high-temperature and long-time use environments, and has a wide application prospect.

Description

Technical Field

[0001] The invention relates to the technical field of cable filling paper ropes, and more particularly to a cable filling flame retardant composite fiber paper rope. Background Art

[0002] With the rapid development of industries like electricity and communications, cables, as a critical piece of infrastructure, play a vital role. Fire resistance, flame retardancy, and aging resistance are particularly crucial when selecting filling materials for cables. Traditional cable filling materials often use natural or synthetic fibers, but these materials are prone to combustion when exposed to fire or high temperatures, posing significant safety risks. Therefore, the development of filling materials with excellent flame retardancy has become a pressing need in the cable manufacturing industry.

[0003] In the past, research on flame-retardant composites focused on the addition of flame retardants, with inorganic flame retardants (such as magnesium hydroxide) and organic small molecule flame retardants (such as DOPO) being widely used. However, a single flame retardant often fails to fully meet the diverse requirements of cable filling materials, including flame retardancy, mechanical properties, and durability. Consequently, increasing research is focusing on developing highly effective flame-retardant composite materials through composite design, combining the advantages of both inorganic and organic materials.

[0004] Currently, some composite fiber paper rope materials on the market, while possessing certain flame retardancy, still have deficiencies in tensile strength, aging resistance, and processing performance. For example, while flame retardancy has improved somewhat, the material's mechanical properties gradually degrade after prolonged use, limiting the cable's stability and safety.

[0005] Therefore, the development of a new cable-filled flame-retardant composite fiber paper rope, using a rational combination of inorganic and organic materials, particularly through the synergistic effects of flame retardant modification, antioxidants, and UV absorbers, can effectively enhance the material's flame retardancy and mechanical strength while ensuring its stability under high-temperature, long-term use conditions. The development of this technology will not only improve cable safety, but also bring new technological breakthroughs to the cable industry, driving its development towards a more environmentally friendly, safe, and durable direction.

[0006] With the increasing demand for green and high-performance materials, future research on cable-filled flame-retardant composite fiber paper ropes will focus more on multifunctionality, high efficiency and green environmental protection. Summary of the Invention

[0007] The object of the present invention is to provide a cable-filled flame-retardant composite fiber paper rope, which has excellent flame retardant properties, good mechanical strength and aging resistance.

[0008] A cable-filled flame-retardant composite fiber paper rope, characterized in that: a cable-filled flame-retardant composite fiber paper rope, the component ratio of the cable-filled flame-retardant composite fiber paper rope is: 35-50 parts of an inorganic material composition, 100 parts of an organic material composition, 30-42 parts of a modified inorganic flame retardant, 2-6 parts of an organic flame retardant, 1-3 parts of an antioxidant composition, 0.4-2 parts of an ultraviolet absorber composition, 0.4-2 parts of a cross-linking agent, 2-6 parts of a toughening agent, 4-10 parts of a reinforcing agent, and 0.6-1 parts of a flow agent.

[0009] Preferably, the inorganic material composition is aluminum silicate fiber and expanded perlite in a mass ratio of 1:1.

[0010] Preferably, the organic material composition is polypropylene fiber and polyester fiber in a mass ratio of 1:1.5.

[0011] Preferably, the modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide using γ-aminopropyltriethoxysilane, and its preparation method is: placing γ-aminopropyltriethoxysilane and aluminum hydroxide in a reaction vessel with a mass ratio of 0.4-0.6:1, stirring and reacting at 50-70°C for 2-4h, cooling to room temperature, washing with deionized water and drying to obtain a modified inorganic flame retardant.

[0012] Preferably, the organic flame retardant is melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber are placed in a reaction container, mixed evenly, and placed in a nitrogen atmosphere. The mixture is reacted at 80-100° C. for 100-140 minutes, cooled to room temperature, washed with deionized water and dried to obtain flame-retardant modified polyester fiber.

[0013] Preferably, the antioxidant composition is the antioxidant DLTP and the antioxidant 1010 in a mass ratio of 1:3.

[0014] Preferably, the ultraviolet absorber composition is UV-326 and UV-1577 in a mass ratio of 1:1.

[0015] Preferably, the cross-linking agent is dibenzoyl peroxide, the toughening agent is polyvinyl alcohol, the reinforcing agent is glass fiber, and the flow agent is polyethylene wax.

[0016] Preferably, the preparation method of the cable-filled flame-retardant composite fiber paper rope is as follows: weigh each substance in the formula according to the formula and complete the corresponding reaction, then place all the materials in a reaction container and mix them evenly, add 20-40 parts of deionized water based on the organic material composition, stir evenly to form a slurry, place it in a mesh mold for stretching and extrusion, shape and cure at 80-100°C for 40-60 minutes, then place it at 120-140°C for cross-linking and curing for 20-40 minutes, and cool to room temperature to obtain a cable-filled flame-retardant composite fiber paper rope.

[0017] Compared with the prior art, the advantages of the present invention are: (1) The present invention has excellent flame retardant properties Modified inorganic flame retardant: Aluminum hydroxide is modified using γ-aminopropyltriethoxysilane. γ-aminopropyltriethoxysilane reacts with the hydroxyl groups on the surface of aluminum hydroxide to generate silane group Al-O-Si bonds. These silane groups can react with the hydroxyl groups in polyester fibers, thereby improving the compatibility of the inorganic flame retardant with organic materials. This allows the modified inorganic flame retardant to be evenly dispersed in the cable-filled composite fiber paper rope, effectively preventing the spread of flames and improving the material's fire resistance.

[0018] Organic flame retardant: Melamine phosphate is used as an organic flame retardant. The phosphate group of melamine phosphate chemically reacts with the hydroxyl group on the polyester fiber to form a stable phosphate-fiber bond, allowing the melamine phosphate to be evenly dispersed in the matrix material, further enhancing the flame retardant ability of the composite material and ensuring that it can still maintain a good flame retardant effect in high temperature environments.

[0019] (2) The present invention improves mechanical strength and tensile strength Inorganic material composition: The combination of aluminum silicate fiber and expanded perlite not only enhances the mechanical strength of the composite fiber paper rope, but also improves the impact resistance of the material, ensuring that it is not easily broken or damaged during the use of the cable.

[0020] Organic material composition: The reasonable ratio of polypropylene fiber and polyester fiber provides the flexibility and tensile strength of the composite fiber paper rope, ensuring that it can adapt to the bending and stretching requirements in cable filling.

[0021] (3) The present invention has excellent antioxidant and durability Antioxidant composition: Hindered phenol oxidant 1010 has excellent thermal stability and migration resistance. When combined with sulfate antioxidant DLTP, it can effectively slow down the oxidation reaction of composite fiber paper rope in high-temperature, high-oxygen environments, reduce the risk of discoloration, extend its service life, and ensure that the cable filling material still has good stability during long-term use.

[0022] (4) The present invention has good ultraviolet protection performance UV absorber composition: Benzotriazole UV absorber UV-326 has low volatility, high temperature resistance and antioxidant synergistic effects. When compounded with UV-1577, it effectively improves the UV absorption capacity of the composite fiber paper rope, thereby reducing the damage and discoloration of the cable caused by ultraviolet radiation and extending the service life of the cable in outdoor environments.

[0023] (5) The present invention has excellent processing performance Synergistic effect of cross-linking agent and toughening agent: The combination of dibenzoyl peroxide as a cross-linking agent and polyvinyl alcohol as a toughening agent enables the composite fiber paper rope to form a three-dimensional network cross-linking structure during the processing process, maintaining good stability while improving the durability and toughness of the finished product.

[0024] Use of flow agent: Polyethylene wax as a flow agent can improve the processing fluidity of composite fiber paper rope and ensure the uniformity and accuracy during the molding process. DETAILED DESCRIPTION

[0025] Example 1: According to the formula, 35 parts of an inorganic material composition of aluminum silicate fiber and expanded perlite in a mass ratio of 1:1, 100 parts of an organic material composition of polypropylene fiber and polyester fiber in a mass ratio of 1:1.5, 30 parts of a modified inorganic flame retardant, 2 parts of an organic flame retardant, 1 part of an antioxidant DLTP and antioxidant 1010 composition in a mass ratio of 1:3, 0.4 parts of an ultraviolet absorber composition of UV-326 and UV-1577 in a mass ratio of 1:1, 0.4 parts of a cross-linking agent dibenzoyl peroxide, 2 parts of a toughening agent polyvinyl alcohol, 4 parts of a reinforcing agent glass fiber, and 0.6 parts of a flow agent polyethylene wax were weighed. The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide with γ-aminopropyltriethoxysilane, and its preparation method is as follows: γ-aminopropyltriethoxysilane and aluminum hydroxide are mixed. The mixture was placed in a reaction vessel with a mass ratio of 0.4:1, stirred and reacted at 50°C for 2 hours, cooled to room temperature, washed with deionized water and dried. The organic flame retardant was melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber were placed in a reaction vessel, mixed evenly and placed in a nitrogen atmosphere, reacted at 80°C for 100 minutes, cooled to room temperature, washed with deionized water and dried. All the materials were then placed in a reaction vessel and mixed evenly. 20 parts of deionized water were added based on the organic material composition, stirred evenly to form a slurry, which was placed in a mesh mold for stretching and extrusion. The slurry was formed and cured at 80°C for 40 minutes, then cross-linked and cured at 120°C for 20 minutes, and cooled to room temperature to obtain a cable-filled flame-retardant composite fiber paper rope.

[0026] Example 2: According to the formula, 38 parts of an inorganic material composition of aluminum silicate fiber and expanded perlite in a mass ratio of 1:1, 100 parts of an organic material composition of polypropylene fiber and polyester fiber in a mass ratio of 1:1.5, 33 parts of a modified inorganic flame retardant, 3 parts of an organic flame retardant, 1.5 parts of an antioxidant DLTP and antioxidant 1010 composition in a mass ratio of 1:3, 0.8 parts of an ultraviolet absorber composition of UV-326 and UV-1577 in a mass ratio of 1:1, 0.8 parts of a cross-linking agent dibenzoyl peroxide, 3 parts of a toughening agent polyvinyl alcohol, 5.5 parts of a reinforcing agent glass fiber, and 0.7 parts of a flow agent polyethylene wax were weighed. The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide using γ-aminopropyltriethoxysilane, and its preparation method is as follows: γ-aminopropyltriethoxysilane and aluminum hydroxide are mixed. Place them in a reaction vessel with a mass ratio of 0.45:1, stir and react at 55°C for 2.5 hours, cool to room temperature, wash with deionized water and dry. The organic flame retardant is melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber are placed in a reaction vessel, mixed evenly and placed in a nitrogen atmosphere, reacted at 85°C for 110 minutes, cooled to room temperature, washed with deionized water and dried, and then all the materials are placed in a reaction vessel and mixed evenly. Based on the organic material composition, 25 parts of deionized water are added and stirred evenly to form a slurry, which is placed in a mesh mold for stretching and extrusion, formed and cured at 85°C for 45 minutes, and then placed at 125°C for cross-linking and curing for 25 minutes, cooled to room temperature, and obtained a cable-filled flame-retardant composite fiber paper rope.

[0027] Example 3: According to the formula, 42 parts of an inorganic material composition of aluminum silicate fiber and expanded perlite in a mass ratio of 1:1, 100 parts of an organic material composition of polypropylene fiber and polyester fiber in a mass ratio of 1:1.5, 36 parts of a modified inorganic flame retardant, 4 parts of an organic flame retardant, 2 parts of an antioxidant DLTP and antioxidant 1010 composition in a mass ratio of 1:3, 1.2 parts of an ultraviolet absorber composition of UV-326 and UV-1577 in a mass ratio of 1:1, 1.2 parts of a cross-linking agent dibenzoyl peroxide, 4 parts of a toughening agent polyvinyl alcohol, 7 parts of a reinforcing agent glass fiber, and 0.8 parts of a flow agent polyethylene wax were weighed. The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide with γ-aminopropyltriethoxysilane, and its preparation method is as follows: γ-aminopropyltriethoxysilane and aluminum hydroxide are mixed. The mixture is placed in a reaction vessel with a mass ratio of 0.5:1, stirred and reacted at 60°C for 3 hours, cooled to room temperature, washed with deionized water and dried. The organic flame retardant is melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber are placed in a reaction vessel, mixed evenly and placed in a nitrogen atmosphere, reacted at 90°C for 120 minutes, cooled to room temperature, washed with deionized water and dried, and then all the materials are placed in a reaction vessel and mixed evenly. Based on the organic material composition, 30 parts of deionized water are added and stirred evenly to form a slurry. The slurry is placed in a mesh mold for stretching and extrusion, formed and cured at 90°C for 50 minutes, and then cross-linked and cured at 130°C for 30 minutes. The slurry is cooled to room temperature to obtain a cable-filled flame-retardant composite fiber paper rope.

[0028] Example 4: According to the formula, 46 parts of an inorganic material composition of aluminum silicate fiber and expanded perlite in a mass ratio of 1:1, 100 parts of an organic material composition of polypropylene fiber and polyester fiber in a mass ratio of 1:1.5, 39 parts of a modified inorganic flame retardant, 5 parts of an organic flame retardant, 2.5 parts of an antioxidant DLTP and antioxidant 1010 composition in a mass ratio of 1:3, 1.6 parts of an ultraviolet absorber composition of UV-326 and UV-1577 in a mass ratio of 1:1, 1.6 parts of a cross-linking agent dibenzoyl peroxide, 5 parts of a toughening agent polyvinyl alcohol, 8.5 parts of a reinforcing agent glass fiber, and 0.9 parts of a flow agent polyethylene wax were weighed. The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide with γ-aminopropyltriethoxysilane, and its preparation method is as follows: γ-aminopropyltriethoxysilane and aluminum hydroxide are mixed. The mixture was placed in a reaction vessel with a mass ratio of 0.55:1, stirred and reacted at 65°C for 3.5 hours, cooled to room temperature, washed with deionized water and dried. The organic flame retardant was melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber were placed in a reaction vessel, mixed evenly and placed in a nitrogen atmosphere, reacted at 95°C for 130 minutes, cooled to room temperature, washed with deionized water and dried. All the materials were then placed in a reaction vessel and mixed evenly. 35 parts of deionized water were added based on the organic material composition, stirred evenly to form a slurry, which was placed in a mesh mold for stretching and extrusion. The slurry was formed and cured at 95°C for 55 minutes, then cross-linked and cured at 135°C for 35 minutes, and cooled to room temperature to obtain a cable-filled flame-retardant composite fiber paper rope.

[0029] Example 5: According to the formula, 50 parts of an inorganic material composition of aluminum silicate fiber and expanded perlite in a mass ratio of 1:1, 100 parts of an organic material composition of polypropylene fiber and polyester fiber in a mass ratio of 1:1.5, 42 parts of a modified inorganic flame retardant, 6 parts of an organic flame retardant, 3 parts of an antioxidant DLTP and antioxidant 1010 composition in a mass ratio of 1:3, 2 parts of an ultraviolet absorber composition of UV-326 and UV-1577 in a mass ratio of 1:1, 2 parts of a cross-linking agent dibenzoyl peroxide, 6 parts of a toughening agent polyvinyl alcohol, 10 parts of a reinforcing agent glass fiber, and 1 part of a flow agent polyethylene wax are weighed. The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide with γ-aminopropyltriethoxysilane, and its preparation method is as follows: placing γ-aminopropyltriethoxysilane and aluminum hydroxide in a reaction mixture. In the container, the mass ratio of the two is 0.6:1, and the reaction is stirred at 70°C for 4 hours, cooled to room temperature, washed with deionized water and dried. The organic flame retardant is melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber are placed in a reaction container, mixed evenly and placed in a nitrogen atmosphere, reacted at 100°C for 140 minutes, cooled to room temperature, washed with deionized water and dried, and then all the materials are placed in a reaction container and mixed evenly. Based on the organic material composition, 40 parts of deionized water are added and stirred evenly to form a slurry, which is placed in a mesh mold for stretching and extrusion, and formed and cured at 100°C for 60 minutes, and then placed at 140°C for cross-linking and curing for 40 minutes, and cooled to room temperature to obtain a cable-filled flame-retardant composite fiber paper rope.

[0030] Performance Testing Flame retardant performance test The cable-filled flame-retardant composite fiber paper ropes obtained in Examples 1-5 were made into 25 mm × 25 mm strip samples, dried at 60° C. for 24 hours, and flame retardant properties were tested using an FPA-2000 electric heating test furnace with reference to the national standard GB / T2408-2008. The test results are shown in the following table: Limiting oxygen index test The cable-filled flame-retardant composite fiber paper ropes obtained in Examples 1-5 were made into 25 mm × 25 mm strip samples, dried at 60°C for 24 hours, and tested for limiting oxygen index using an ATS-LOI limiting oxygen index tester, with reference to the national standard GB / T 2406.2-2009. The test results are shown in the following table: Tensile strength and elongation test The cable-filled flame-retardant composite fiber paper ropes obtained in Examples 1-5 were made into 50 mm × 10 mm strip samples, dried at 60°C for 24 hours, and subjected to tensile strength and elongation tests using an Instron 5569 electronic universal testing machine at a tensile rate of 50 mm / min, with reference to the national standard GB / T 528-2009. The test results are shown in the following table: Heat resistance test The cable-filled flame-retardant composite fiber paper ropes obtained in Examples 1-5 were made into 50 mm × 50 mm strips and dried at 60°C for 24 hours. The heat resistance of the strips was tested using a TA Instruments TGA Q500 thermogravimetric analyzer. The temperature rise rate of the thermogravimetric analyzer was set at 10°C / min and the samples were heated from room temperature to 600°C. The test results were compared with those in the national standard GB / T 2925-2008. The following table shows the test results: UV aging resistance test The cable-filled flame-retardant composite fiber paper ropes obtained in Examples 1-5 were made into 100 mm × 20 mm strips and dried at 60°C for 24 hours. The UV aging resistance of the strips was tested using a Q-LAB UV-C114 electronic universal testing machine. The UV radiation intensity was set at 0.89 W / m² / nm, a UV-A lamp was used, and the irradiation time was 1000 hours. The test results were based on the national standard GB / T 16422.2-2009. The following table shows the test results:

Claims

1. A cable-filled flame-retardant composite fiber paper rope, characterized by: A cable-filled flame-retardant composite fiber paper rope comprises the following components in the following proportions: 35-50 parts of an inorganic material composition, 100 parts of an organic material composition, 30-42 parts of a modified inorganic flame retardant, 2-6 parts of an organic flame retardant, 1-3 parts of an antioxidant composition, 0.4-2 parts of an ultraviolet absorber composition, 0.4-2 parts of a cross-linking agent, 2-6 parts of a toughening agent, 4-10 parts of a reinforcing agent, and 0.6-1 parts of a flow agent.

2. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The inorganic material composition is aluminum silicate fiber and expanded perlite in a mass ratio of 1:

1.

3. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The organic material composition is polypropylene fiber and polyester fiber in a mass ratio of 1:1.

5.

4. The cable-filled flame-retardant composite fiber paper rope according to claim 3, characterized in that: The modified inorganic flame retardant is a product obtained by modifying aluminum hydroxide using γ-aminopropyltriethoxysilane. The preparation method is as follows: γ-aminopropyltriethoxysilane and aluminum hydroxide are placed in a reaction vessel with a mass ratio of 0.4-0.6:1, stirred and reacted at 50-70°C for 2-4 hours, cooled to room temperature, washed with deionized water and dried to obtain the modified inorganic flame retardant.

5. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The organic flame retardant is melamine phosphate. According to the mass ratio in the formula, melamine phosphate and polyester fiber are placed in a reaction container, mixed evenly, and then placed in a nitrogen atmosphere. The mixture is reacted at 80-100° C. for 100-140 minutes, cooled to room temperature, washed with deionized water, and dried to obtain a flame-retardant modified polyester fiber.

6. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The antioxidant composition comprises antioxidant DLTP and antioxidant 1010 in a mass ratio of 1:

3.

7. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The ultraviolet absorber composition is UV-326 and UV-1577 in a mass ratio of 1:

1.

8. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The cross-linking agent is dibenzoyl peroxide, the toughening agent is polyvinyl alcohol, the reinforcing agent is glass fiber, and the flow agent is polyethylene wax.

9. The cable-filled flame-retardant composite fiber paper rope according to claim 1, characterized in that: The preparation method of the cable-filled flame-retardant composite fiber paper rope comprises the following steps: weighing various substances in a formula according to a formula and completing corresponding reactions; then placing all the materials in a reaction container and mixing them evenly; adding 20-40 parts of deionized water based on the organic material composition; and stirring evenly to form a slurry; placing the slurry in a mesh mold for stretching and extrusion; forming and curing the slurry at 80-100° C. for 40-60 minutes; then placing the slurry at 120-140° C. for cross-linking and curing for 20-40 minutes; and cooling the slurry to room temperature to obtain the cable-filled flame-retardant composite fiber paper rope.

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