Basalt fiber rope and method of making same

Abstract

The application discloses a basalt fiber rope and a preparation method thereof, and comprises the following steps: selecting basalt fibers and flexible flame-retardant fibers to make the rope, ensuring that each bundle of fiber filaments is clean and tidy, without broken filaments or defects; wrapping 1-2 basalt fibers with a fineness of 500 dtex-2000 dtex with 3 flexible flame-retardant fibers with a fineness of 100 dtex-600 dtex on a doubling machine to form a core yarn; doubling the core yarn to make a twisted yarn one; combining a plurality of core yarns together, and then wrapping the core yarns with a core stranding machine to form a rope strand one with a sheath; weaving the completed rope strand one into a fiber cable one on a weaving machine; and testing the breaking tension of the fiber cable one by using a horizontal tension machine. The method can reduce the damage of the cable to the human body during weaving and is beneficial to actual operation, and can maximize the high-temperature resistance, fire resistance and mechanical properties of the basalt fibers, and meanwhile, the damage to the human body is reduced.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to a basalt fiber rope and its preparation method. Background Technology

[0002] Basalt fiber rope is a high-performance fiber rope made from natural basalt ore through high-temperature melting, drawing, and weaving processes. Basalt fiber has excellent tensile strength, as well as superior high-temperature resistance and fire resistance. It is chemically stable, and the raw materials are derived from natural minerals. The production process is environmentally friendly and pollution-free, making it a green and environmentally friendly material.

[0003] However, basalt fiber ropes are not very flexible, are brittle, and easily break. Therefore, extra protective measures are required for operators during the regular weaving and use of basalt ropes. Otherwise, broken fibers can easily enter the skin and cause itching, and inhalation can easily damage the lungs, which greatly limits their use.

[0004] This invention proposes a novel weaving method for basalt fibers that can reduce human injury during the weaving process and facilitate practical operation. While maximizing the high-temperature resistance, fire resistance, and mechanical properties of basalt fibers, it can also reduce harm to the human body. To address the above issues, a solution is proposed below. Summary of the Invention

[0005] The purpose of this invention is to provide a basalt fiber rope and its preparation method, thereby solving the problem.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A method for preparing basalt fiber rope, the method of which is as follows:

[0008] Step 1: Select basalt fiber and flexible flame-retardant fiber to make ropes, ensuring that each bundle of fiber is clean and tidy, without broken filaments or defects; wrap 1-2 basalt fibers of 500dtex-2000dtex with 3 flexible flame-retardant fibers of 100dtex-600dtex on a spinning machine to form core-spun yarn.

[0009] Step 2: Twist 4 to 8 core-spun yarns together using a twisting machine to form twist yarn one. The twist of twist yarn one is 10 to 20 T / m, and the twist direction is S twist or Z twist.

[0010] Step 3: Combine several twisted yarns together, and then use a core-spun stranding machine to wrap the twisted yarns to form a sheathed rope strand. Basalt fiber is wrapped inside the sheath. The sheath is made using a warp and weft weaving process, and the sheath thickness is 2-4mm.

[0011] Step 4: Braid the completed rope strands into fiber cable one on a braiding machine. The diameter of fiber cable one is 3.5 to 4.5 times the inner diameter of the sheath, and the twist pitch of fiber cable one is 8 to 12 times the diameter of fiber cable one. Its structure is 1×12 strands, 2×12 strands or 16 strands.

[0012] Step 5: Use a horizontal tensile testing machine to test the breaking tensile strength of fiber cable 1. Before the test, cycle 10 times within the range of 1% to 50% of the design breaking tensile strength. Then, break fiber cable 1. Finally, the breaking tensile strength of fiber cable 1 should not be less than the design breaking tensile strength.

[0013] As a preferred embodiment, after the core-spun yarn is made from fibers in step one, fiber ropes can be made through the following steps:

[0014] Step 2: Twist 5-20 core-spun yarns using a twisting machine to form twisted yarn 2. The twist of twisted yarn 2 is 20-35 T / m, and the twist direction is S twist or Z twist.

[0015] Step 3: Twist the completed twisted yarn two on a stranding machine to form rope strand two. The twist pitch of rope strand two is 20 to 25 times the diameter of rope strand two, and the twist direction of rope strand two is opposite to that of twisted yarn two.

[0016] Step 4: Braid the completed rope strand 2 into fiber cable 2 on a braiding machine. The twist pitch of fiber cable 2 is 8-12 times the diameter of fiber cable 2, and the diameter of rope strand 2 is 2 / 5 to 1 / 5 times the diameter of fiber cable 2. Its structure is 1×12 strands, 2×12 strands or 16 strands.

[0017] Step 5: Use a horizontal tensile testing machine to test the breaking tensile strength of fiber cable 2. Before the test, cycle 10 times within the range of 1% to 50% of the design breaking tensile strength. Then, break fiber cable 2. Finally, the breaking tensile strength of fiber cable 2 should not be less than the design breaking tensile strength.

[0018] Preferably, the flexible flame-retardant fiber mentioned in step one is any one or more of flame-retardant polyester fiber, flame-retardant viscose fiber, and aramid fiber.

[0019] As a preferred embodiment, a basalt fiber rope is obtained using the preparation method described above.

[0020] Beneficial effects: In the production process of basalt fiber cables, basalt fibers are first wrapped with flexible flame-retardant fibers to form core-spun yarn. The core-spun yarn structure allows the basalt fibers to be wrapped inside, which reduces the risk of injury to the human body during the subsequent weaving process, facilitates practical operation, and ensures the high temperature resistance, fire resistance, and mechanical properties of basalt fibers. Attached Figure Description

[0021] Figure 1 This is a schematic cross-sectional view of Example 1 used to illustrate the structure of twisted yarn one;

[0022] Figure 2 This is a schematic cross-sectional view of the fiber cable in Example 1, used as an example.

[0023] Figure 3 This is a cross-sectional structural diagram of Example 2 used to illustrate the twisted yarn two;

[0024] Figure 4 This is a cross-sectional structural diagram of fiber cable two in Example 2.

[0025] Attached reference numerals: 1. Basalt fiber; 2. Flexible flame-retardant fiber; 3. Core-spun yarn; 4. Twist 1; 5. Sheath; 6. Rope strand 1; 7. Fiber cable 1; 8. Twist 2; 9. Rope strand 2; 10. Fiber cable 2. Detailed Implementation

[0026] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of the present invention should be considered within the protection scope of the present invention. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the protection scope of the present invention.

[0027] In Example 1

[0028] See Figure 1 and 2 As shown, a method for preparing a φ36mm basalt fiber rope is as follows:

[0029] Step 1: Select basalt fiber 1 and flexible flame-retardant fiber 2 to make the rope, ensuring that each bundle of fibers is clean and neat, without broken strands or defects. Flexible flame-retardant fiber 2 is one or more of flame-retardant polyester fiber, flame-retardant viscose fiber, and aramid fiber. Wrap one 500dtex basalt fiber 1 with three 150dtex aramid fibers and twist them together on a twisting machine to form core-spun yarn 3. By wrapping basalt fiber 1 inside aramid fiber, it is prevented from breaking during weaving and producing broken fibers. Broken fibers can easily enter the skin and cause itching, and can also damage the lungs if inhaled. This design reduces the damage to the human body during the rope weaving process and is also beneficial to actual operation.

[0030] Step 2: Twist the 6 core-spun yarns 3 through a twisting machine to form twisted yarn 4. The twist of the yarn is 15T / m and the twist direction is S twist.

[0031] Step 3: Using a core-spun stranding machine, 20 twisted yarns 4 are wrapped in parallel to form a rope strand 6 with a sheath 5. Basalt fiber 1 is wrapped inside the sheath 5. The sheath 5 is made of warp and weft weaving technology. The warp uses 34 2*1600D aramid fibers and the weft uses 2 3*1600D aramid fibers. The thickness of the sheath 5 is about 3mm.

[0032] Step 4: Braid the completed strand 6 into fiber cable 7 on a braiding machine. The diameter of fiber cable 7 is 36 mm. The inner diameter of the strand of fiber cable 6 is 9 mm. Therefore, the diameter of fiber cable 7 is 4 times the inner diameter of sheath 5. The twist pitch of fiber cable 7 is 288 mm. The twist pitch of fiber cable 7 is 8 times the diameter of fiber cable 7. Its structure is 1×12 strands.

[0033] Step 5: Use a horizontal tensile testing machine to test the breaking strength of the cable. Before the test, cycle the cable 10 times within the range of 1% to 50% of the design breaking strength. Gradually increase the design breaking strength from 1%. Then break the fiber cable 7. Finally, the breaking strength of the fiber cable 7 should not be less than the design breaking strength.

[0034] A basalt fiber rope includes strands 6 and a fiber cable 7 made of several strands 6. Strands 6 include flame-retardant fibers and twisted yarns 4. Twisted yarns 4 are made of several core-spun yarns 3. The core-spun yarns 3 are composed of basalt fibers 1 and flexible flame-retardant fibers 2. The flexible flame-retardant fibers 2 are wrapped around the outside of the basalt fibers 1. Strands 6 are woven by multiple twisted yarns 4 in conjunction with multiple flame-retardant fibers, and the flame-retardant fibers form a sheath 5 for the twisted yarns 4.

[0035] In Example 2, see Figure 3 and 4 As shown, a method for preparing a φ16mm basalt fiber rope is as follows:

[0036] Step 1: Select basalt fiber 1 and flexible flame-retardant fiber 2 to make ropes, ensuring that each bundle of fiber is clean and tidy, without broken filaments or defects; wrap 2 strands of 500dtex basalt fiber 1 with 3 strands of 200dtex flexible flame-retardant fiber 2 and twist them together on a twisting machine to form core-spun yarn 3.

[0037] Step 2: Twist 13 core-spun yarns 3 through a twisting machine to form twisted yarn 2 8. Twist yarn 2 8 has a twist of 30T / m and a twist direction of S.

[0038] Step 3: Twist 10 strands 28 on a stranding machine to form strand 29. The diameter of strand 29 is 4.5mm, the twist pitch of strand 29 is 90mm, the twist pitch of strand 29 is 20 times the diameter of strand 29, and the twist direction of strand 29 is Z twist.

[0039] Step 4: Braid the 12 completed rope strands 9 into 12-strand fiber cable 10 on a braiding machine. The twist pitch of fiber cable 10 is 144mm, the diameter of fiber cable 10 is 16mm, and the twist pitch of fiber cable 10 is 9 times the diameter of fiber cable 10.

[0040] Step 5: Use a horizontal tensile testing machine to test the breaking strength of the cable. Before the test, cycle 10 times within the range of 1% to 50% of the design breaking strength. Gradually increase the design breaking strength from 1%. Then break the fiber cable 210. Finally, the breaking strength of the fiber cable 210 should not be less than the design breaking strength.

[0041] A basalt fiber rope includes a second strand 9 and a fiber cable 10 made of several second strands 9. The second strand 9 includes several twisted threads 8. The second strand 9 is woven by several twisted threads 8. The twisted threads 8 are composed of several core-spun yarns 3. The core-spun yarns 3 are composed of basalt fiber 1 and flexible flame-retardant fiber 2. The basalt fiber 1 is disposed inside the core-spun yarn 3, and the flexible flame-retardant fiber 2 is wrapped around the outside of the basalt fiber 1.

[0042] Flexible flame-retardant fiber 2 is one or more of flame-retardant polyester fiber, flame-retardant viscose fiber, and aramid fiber.

Claims

1. A method for preparing basalt fiber rope, the method of which is as follows: Step 1: Select basalt fiber (1) and flexible flame retardant fiber (2) to make ropes, ensuring that each bundle of fiber is clean and tidy, without broken filaments or defects; wrap 1-2 basalt fibers (1) of 500dtex-2000dtex with 3 flexible flame retardant fibers (2) of 100dtex-600dtex and then twist them together on a twisting machine to form core-spun yarn (3); Step 2: Twist 4 to 8 core-spun yarns (3) through a twisting machine to form twisted yarn one (4). The twist of twisted yarn one (4) is 10 to 20 T / m and the twist direction is S twist or Z twist. Step 3: Combine several twisted yarns (4) together, and then use a core-spun stranding machine to wrap the twisted yarns (4) to form a rope strand (6) with a sheath (5). Basalt fiber (1) is wrapped inside the sheath (5). The sheath (5) is made using a warp and weft weaving process. The thickness of the sheath (5) is 2-4mm. Step 4: Braid the completed rope strand 1 (6) into fiber cable 1 (7) on a braiding machine. The diameter of fiber cable 1 (7) is 3.5 to 4.5 times the inner diameter of the sheath (5). The twist pitch of fiber cable 1 (7) is 8 to 12 times the diameter of fiber cable 1 (7). Its structure is 1×12 strands, 2×12 strands or 16 strands. Step 5: Use a horizontal tensile testing machine to test the breaking tensile strength of fiber cable 1 (7). Before the test, cycle 10 times within the range of 1% to 50% of the design breaking tensile strength. Then break the fiber cable 1 (7). Finally, the breaking tensile strength of fiber cable 1 (7) should not be less than the design breaking tensile strength.

2. The method for preparing a basalt fiber rope according to claim 1, characterized in that, After making core-spun yarn (3) from fibers in step one, fiber ropes can be made through the following steps: Step 2: Twist 5 to 20 core-spun yarns (3) through a twisting machine to form twisted yarn 2 (8). The twist of twisted yarn 2 (8) is 20 to 35 T / m, and the twist direction is S twist or Z twist. Step 3: Twist the completed twisted yarn 2 (8) on the twisting machine to form rope strand 2 (9). The twist pitch of rope strand 2 (9) is 20 to 25 times the diameter of rope strand 2 (9). The twist direction of rope strand 2 (9) is opposite to that of twisted yarn 2 (8). Step 4: Braid the completed rope strand 2 (9) into fiber cable 2 (10) on a braiding machine. The twist pitch of fiber cable 2 (10) is 8-12 times the diameter of fiber cable 2 (10), and the diameter of rope strand 2 (9) is 2 / 5 to 1 / 5 times the diameter of fiber cable 2 (10). Its structure is 1×12 strands, 2×12 strands or 16 strands. Step 5: Use a horizontal tensile testing machine to test the breaking tensile strength of fiber cable 2 (10). Before the test, cycle 10 times within the range of 1% to 50% of the design breaking tensile strength. Then, break fiber cable 2 (10). Finally, the breaking tensile strength of fiber cable 2 (10) should not be less than the design breaking tensile strength.

3. The method for preparing a basalt fiber rope according to claim 1, characterized in that, The flexible flame-retardant fiber (2) mentioned in step one is any one or more of flame-retardant polyester fiber, flame-retardant viscose fiber, and aramid fiber.

4. A basalt fiber rope, which is obtained by the preparation method described in any one of claims 1 or 2.

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