High tensile strength basalt fiber rope

By combining a support core frame, inner core strands, outer core strands, and a sheath, along with alternating wrapping of basalt fiber and glass fiber, an elastic coating, and a flame-retardant coating, the problems of easy deformation under high-intensity loads and insufficient reliability in extreme environments of traditional ropes are solved. This achieves high tensile strength, abrasion resistance, and fire resistance in the rope, extending its service life and reducing costs.

CN119754063BActive Publication Date: 2026-07-21CHINA FIBER NEW MATERIAL TECH (CHENGDE) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA FIBER NEW MATERIAL TECH (CHENGDE) CO LTD
Filing Date
2025-01-21
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional ropes are prone to stretching, deformation, or breakage under high-intensity loads, and their reliability and service life are insufficient in extreme environments.

Method used

The rope employs a support frame, inner core strands, outer core strands, and sheath structure, combined with alternating wrapping of basalt fiber and glass fiber, and uses an elastic coating and flame-retardant coating to enhance the rope's tensile strength, abrasion resistance, fire resistance, and environmental adaptability.

Benefits of technology

It improves the overall tensile strength and stability of the rope, extends its service life, enhances its safety and durability under extreme loads and complex environments, reduces material costs, and enables resource recycling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a high-tensile-strength basalt fiber rope, and relates to the technical field of ropes.The high-tensile-strength basalt fiber rope comprises a supporting core frame, the outer side of the supporting core frame is provided with an inner core strand, the outer side of the inner core strand is provided with an outer core strand, and the outer side of the outer core strand is provided with a sheath.The supporting core frame, the inner core strand, the outer core strand and the sheath are combined, so that the rope can disperse stress layer by layer when the rope is subjected to stress, the overall tensile strength and stability of the rope are improved, the sheath serves as the outermost layer of the rope, provides additional protection, can prevent the rope from being affected by external factors such as mechanical damage, chemical corrosion or ultraviolet radiation, and keeps the rope intact and stable in performance.
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Description

Technical Field

[0001] This invention relates to the field of rope technology, and more specifically, to a high tensile strength basalt fiber rope. Background Technology

[0002] Ropes are an indispensable part of daily life. They are usually made of multiple strands of fiber or thread, carefully twisted together, possessing sufficient strength and toughness to withstand various tensile challenges. Whether used for binding objects, securing structures, or assisting in climbing, ropes play a crucial role due to their unique properties.

[0003] In the field of traditional rope materials, synthetic fibers such as nylon and polyester were once widely popular due to their good physical properties and relatively low cost. However, with the expansion of application scenarios and the continuous improvement of people's requirements for rope performance, the limitations of these traditional materials have gradually become apparent. Especially under high-intensity loads, nylon and polyester ropes are prone to tensile deformation, and even breakage or fatigue damage in extreme cases, which greatly reduces the reliability and service life of the ropes.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In view of the problems in related technologies, this invention proposes a high tensile strength basalt fiber rope to overcome the aforementioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by the present invention is as follows: A high tensile strength basalt fiber rope includes a support core frame, an inner core strand on the outside of the support core frame, an outer core strand on the outside of the inner core strand, and a sheath on the outside of the outer core strand.

[0007] Furthermore, to improve the strength and stability of the rope, the core rope provides flexibility and basic support, while the reinforcing strands enhance tensile strength and fatigue resistance. The elastic coating layer enhances the overall abrasion resistance, high temperature resistance, flame retardancy, corrosion resistance, and environmental adaptability, while reducing weight and extending service life. This gives the rope excellent strength, stability, and durability under extreme loads and complex environments. The support core frame includes the core rope and the reinforcing strands wrapped around the outside of the core rope, with an elastic coating layer between the core rope and the reinforcing strands. The reinforcing strands are made of multiple strands of steel wire twisted together. The elastic coating layer is made of silicone rubber powder, ethylene-propylene block copolymer, thickener, flame retardant, defoamer, bactericide, diatomaceous earth, foam ceramic particles, nano-silica, and nano-iron dioxide.

[0008] Furthermore, to extend the rope's service life, basalt fiber and glass fiber are alternately wrapped, combined with high-performance basalt fiber materials prepared from basalt fiber waste and additives for reinforcement. This not only improves the overall strength, toughness, and high-temperature resistance of the inner core rope strands but also effectively reduces material costs and achieves resource recycling. The inner core rope strands are composed of basalt fiber and glass fiber, which are wrapped alternately around the outer side of the elastic coating layer. The basalt fiber is prepared from basalt, additives, zinc borate, boron oxide, and phosphorus pentoxide. The additives include at least one of alumina, magnesium oxide, calcium oxide, silicon dioxide, or titanium oxide. The basalt is basalt fiber waste.

[0009] Furthermore, in order to improve the fire resistance of the rope, flexible flame-retardant fibers are used and coated with a flame-retardant coating, which significantly improves the fire resistance of the rope and enhances its safety and stability in high-temperature environments such as fires. The outer core strands are composed of several flexible flame-retardant fibers wrapped around the outside of basalt fibers and glass fibers, and the outside of the flexible flame-retardant fibers is coated with a flame-retardant coating; the material of the flexible flame-retardant fibers is polyamide fiber.

[0010] The beneficial effects of this invention are as follows: 1. This invention consists of a support core frame, inner core strands, outer core strands, and a sheath, which enables the rope to distribute stress layer by layer when under force, thereby improving the overall tensile strength and stability of the rope. The sheath, as the outermost layer of the rope, provides additional protection, preventing the rope from being affected by external factors such as mechanical damage, chemical corrosion, or ultraviolet radiation, thus maintaining the integrity and performance stability of the rope.

[0011] 2. By setting up a support core frame, the strength and stability of the rope are improved. The core rope provides flexibility and basic support, while the reinforced strands can improve tensile strength and fatigue resistance. The elastic coating layer enhances the overall abrasion resistance, high temperature resistance, flame retardancy, corrosion resistance and environmental adaptability, while reducing weight and extending service life. This gives the rope excellent strength, stability and durability under extreme loads and complex environments.

[0012] 3. By setting inner core strands, the service life of the rope can be extended. By using alternating wrapping of basalt fiber and glass fiber, combined with high-performance basalt fiber materials made from basalt fiber waste and additives for reinforcement, not only is the overall strength, toughness and high temperature resistance of the inner core strands improved, but material costs are also effectively reduced and resources are recycled.

[0013] 4. By setting the outer core strands, the fire resistance of the rope is improved. By using flexible flame-retardant fibers and coating them with flame-retardant coatings, the fire resistance of the rope is significantly improved, enhancing the safety and stability of the rope in high-temperature environments such as fires. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a high tensile strength basalt fiber rope according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the support core frame in a high tensile strength basalt fiber rope according to an embodiment of the present invention.

[0016] In the picture: 1. Support core frame; 101. Core rope; 102. Reinforcing strands; 103. Elastic covering layer; 2. Inner core rope strands; 201. Basalt fiber; 202. Glass fiber; 3. Outer core rope strands; 301. Flexible flame-retardant fiber; 4. Sheath. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] According to an embodiment of the present invention, a high tensile strength basalt fiber rope is provided.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-2 As shown, the high tensile strength basalt fiber rope according to an embodiment of the present invention includes a support core frame 1, an inner core strand 2 is provided on the outer side of the support core frame 1, an outer core strand 3 is provided on the outer side of the inner core strand 2, and a sheath 4 is provided on the outer side of the outer core strand 3.

[0020] It should be noted that the sheath 4 is made of high molecular polymer material, which is used to effectively protect the rope from external environmental erosion and damage.

[0021] Among them, polymer materials include polyurethane (PU), polyvinyl chloride (PVC), nylon (such as polyamide 6 or polyamide 66), etc.

[0022] The polyurethane sheath has good elasticity and abrasion resistance, and can adapt to the bending and stretching of the rope.

[0023] The PVC sheath has excellent corrosion resistance and UV resistance, and can resist the erosion of the external environment.

[0024] Nylon sheaths are known for their high strength and abrasion resistance, making them suitable for applications requiring high tensile strength.

[0025] By means of the above-mentioned technical solution of the present invention, the present invention is composed of a support core frame, inner core strands, outer core strands and a sheath, which enables the rope to distribute stress layer by layer when under force, thereby improving the overall tensile strength and stability of the rope. The sheath, as the outermost layer of the rope, provides additional protection and can prevent the rope from being affected by external factors such as mechanical damage, chemical corrosion or ultraviolet radiation, thus maintaining the integrity and performance stability of the rope.

[0026] In one embodiment, the support core frame 1 includes a core rope 101 and reinforcing strands 102 wrapped around the outside of the core rope 101. An elastic coating layer 103 is coated between the core rope 101 and the reinforcing strands 102. The reinforcing strands 102 are made of multiple strands of steel wire twisted together. The elastic coating layer 103 is made of silicone rubber powder, ethylene-propylene block copolymer, thickener, flame retardant, defoamer, bactericide, diatomaceous earth, foam ceramic particles, nano-silica, and nano-iron dioxide, thereby improving the strength and stability of the rope. The core rope 101 provides flexibility and basic support, the reinforcing strands 102 can improve tensile strength and fatigue resistance, and the elastic coating layer 103 enhances the overall wear resistance, high temperature resistance, flame retardancy, corrosion resistance and environmental adaptability, while reducing weight and extending service life, so that the rope has excellent strength, stability and durability under extreme loads and complex environments.

[0027] It should be noted that the elastic coating layer 103 is made of a composite of multiple materials, each with unique properties, which together provide the rope with enhanced abrasion resistance, high-temperature resistance, flame retardancy, corrosion resistance, and environmental adaptability. The following is a description of the components of the elastic coating layer 103: Silicone rubber powder is a polymer material with excellent heat resistance, cold resistance, aging resistance, and radiation resistance. Its molecular structure contains high-energy silicon-oxygen bonds, giving it outstanding high-temperature and low-temperature resistance. In elastic coating layers, silicone rubber powder provides good heat resistance, cold resistance, and aging resistance, enabling ropes to maintain stable performance under extreme temperatures.

[0028] Ethylene-propylene block copolymers are polymeric materials synthesized from ethylene and propylene monomers through polymerization. They possess excellent mechanical properties, thermal stability, and chemical resistance. In elastic coatings, ethylene-propylene block copolymers enhance the strength and toughness of the material, improving the tensile strength and fatigue resistance of ropes.

[0029] Thickener: A substance that can increase the viscosity of a liquid or solution. In the preparation of elastic coatings, thickeners are used to adjust the viscosity of the material, making it easier to coat the outside of the support core and ensuring a uniform and stable coating. Thickeners include at least one of polyvinyl alcohol, xanthan gum, polyacrylate, polyurethane thickeners, or layered silicate thickeners.

[0030] Flame retardants are additives that reduce the flammability of materials and inhibit the spread of flames. In elastic overlays, flame retardants improve the flame-retardant properties of ropes, enabling them to maintain structural integrity and reduce fire risk in high-temperature environments such as fires. Flame retardants include at least one of the following: inorganic flame retardants (such as aluminum hydroxide and zinc borate), organic halogen flame retardants (such as decabromodiphenyl ether and chlorinated paraffin), phosphorus-based flame retardants (such as red phosphorus and ammonium polyphosphate), nitrogen-based flame retardants (such as melamine), silicone-based flame retardants (such as silicone rubber powder), or nano-flame retardants (such as nano-silica and montmorillonite).

[0031] Defoamer: A defoamer is a substance that disrupts the stability of foam and is used to eliminate air bubbles in a liquid or solution. In the preparation of elastic coatings, defoamers are used to eliminate air bubbles in the coating, ensuring a smooth, defect-free coating and improving the appearance and durability of the rope. Defoamers include at least one of silicone-based, mineral oil-based, or polyether-based defoamers.

[0032] Bactericides: Bactericides are substances that can kill or inhibit the growth of microorganisms. In elastic covering layers, bactericides are used to inhibit microbial growth, prevent rope damage due to microbial erosion during use, and extend the rope's service life. Bactericides include at least one of inorganic, organic, or natural bactericides. Inorganic bactericides mainly rely on the antibacterial effect of metal ions (such as silver and copper ions) and are characterized by long-lasting and durable effects. Organic bactericides rely on chemical components to directly interfere with the growth process of microorganisms; they are diverse in type and have rapid effects. Natural bactericides are derived from plants or natural minerals.

[0033] Diatomaceous earth is a porous natural mineral material with excellent adsorption and dispersibility. In elastic coatings, diatomaceous earth is used as a filler to increase the coating's hardness and abrasion resistance, while also improving the rope's moisture absorption and breathability. The amount of diatomaceous earth added should generally be controlled within a reasonable range (usually 5%-15% of the total coating volume); excessive amounts will reduce the material's flexibility and ductility.

[0034] Foamed ceramic particles are a type of porous ceramic material with excellent thermal insulation and mechanical properties. In elastic coatings, foamed ceramic particles are used as fillers to enhance the thermal insulation and mechanical properties of the coating, thereby improving the stability of ropes in extreme environments.

[0035] Nano-silica: A silica powder with ultrafine nanoscale dimensions, possessing excellent reinforcing, thixotropic, and optical properties. In elastic coatings, nano-silica acts as a reinforcing agent, significantly improving the mechanical strength and toughness of the coating, while also enhancing the rope's abrasion resistance and aging resistance. Its ultrafine nanoscale size allows for uniform dispersion within the coating, forming a strong bond with the matrix material, thereby enhancing the overall performance of the coating. The reinforcing effect of nano-silica is not only reflected in static mechanical properties but also in dynamic wear and aging processes. During rope use, the coating is subjected to various forces such as friction, tension, and bending. The addition of nano-silica significantly improves the coating's abrasion resistance and aging resistance, extending the rope's service life.

[0036] Nano-iron dioxide is a nanomaterial with unique physicochemical properties, exhibiting excellent magnetic and catalytic performance. In elastic coatings, nano-iron dioxide can act as a catalyst to catalyze the degradation of harmful substances, improving the environmental performance of ropes. For example, in certain environments, ropes may come into contact with harmful substances; nano-iron dioxide, through its catalytic properties, can accelerate the decomposition and transformation of these harmful substances, thereby protecting the environment and human health.

[0037] In one embodiment, the inner core strand 2 is composed of basalt fiber 201 and glass fiber 202; and the basalt fiber 201 and glass fiber 202 are wrapped around the outer side of the elastic covering layer 103 in an alternating manner; the basalt fiber 201 is prepared from basalt, additives, zinc borate, boron oxide and phosphorus pentoxide; the additives include at least one of alumina, magnesium oxide, calcium oxide, silicon dioxide or titanium oxide; the basalt is basalt fiber waste, which can extend the service life of the rope. By using the alternating winding of basalt fiber 201 and glass fiber 202, combined with high-performance basalt fiber material prepared from basalt fiber waste and additives for reinforcement, not only is the overall strength, toughness and high temperature resistance of the inner core strand 2 improved, but the material cost is also effectively reduced and resource recycling is achieved.

[0038] It should be noted that basalt fiber 201 is made primarily from basalt fiber waste. The waste is processed and recycled, then reinforced with specific additives to form high-performance fibers.

[0039] Glass fiber 202, a common reinforcing material, is used in this design alternately with basalt fiber to form the inner core strand 2. Glass fiber is known for its excellent electrical insulation and dimensional stability. When combined with basalt fiber, it can further enhance the rigidity and support capacity of the entire system without sacrificing flexibility. More importantly, the synergistic effect between the two allows the composite material to maintain a stable operating state over a wider temperature range.

[0040] In one embodiment, the outer core strand 3 is composed of several flexible flame-retardant fibers 301 wrapped around the outer side of basalt fiber 201 and glass fiber 202, and the outer side of the flexible flame-retardant fibers 301 is coated with a flame-retardant coating; the flexible flame-retardant fibers 301 are made of polyamide fiber, thereby improving the fire resistance of the rope. By using flexible flame-retardant fibers and coating with a flame-retardant coating, the fire resistance of the rope is significantly improved, and the safety and stability of the rope in high-temperature environments such as fires are enhanced.

[0041] It should be noted that flame-retardant coatings primarily employ halogen-free flame retardants, silicon-based coatings, or ceramic-based coatings. The application of flame-retardant coatings on the outer core strands is not simply about adding a protective film; it's based on complex chemical principles to effectively control flames. When the temperature rises, the flame-retardant coating undergoes a series of physicochemical changes, including but not limited to: Carbonization: Some components in the coating decompose into carbonaceous residues at high temperatures. These substances can form a dense carbon layer on the fiber surface, which acts as an air barrier.

[0042] Cooling effect: Some flame retardants can reduce the local temperature by absorbing heat, thereby slowing down the combustion rate.

[0043] Dilution effect: Releases non-flammable gases (such as carbon dioxide) to dilute the surrounding oxygen concentration and inhibit flame development.

[0044] Covering effect: A solid substance in a molten state is generated to cover the fiber surface, preventing the flame from directly contacting the fiber itself.

[0045] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0046] In practical applications, when the rope is under stress, the tension is transferred layer by layer from the sheath 4 to the outer core strand 3 and the inner core strand 2, and finally borne by the supporting core frame 1. Each layer of the structure works together to share the force, which can avoid local stress concentration and improve the overall tensile strength and stability. The sheath 4 is responsible for protecting against the influence of the external environment; the outer core strand 3 provides fire resistance, wear resistance and cushioning functions; the inner core strand 2 enhances flexibility and dynamic adaptability; and the supporting core frame 1, as the core load-bearing layer, provides basic strength and mechanical stability.

[0047] In summary, by utilizing the above-mentioned technical solution of the present invention, the present invention, composed of a supporting core frame, inner core strands, outer core strands, and a sheath, enables the rope to distribute stress layer by layer when under load, thereby improving the overall tensile strength and stability of the rope. The sheath, as the outermost layer of the rope, provides additional protection, preventing the rope from being affected by external factors such as mechanical damage, chemical corrosion, or ultraviolet radiation, thus maintaining the integrity and performance stability of the rope. By setting the supporting core frame 1, the strength and stability of the rope are improved. The core rope 101 provides flexibility and basic support, the reinforcing strands 102 enhance tensile strength and fatigue resistance, and the elastic sheath 103 enhances the overall wear resistance, high-temperature resistance, flame retardancy, corrosion resistance, and environmental adaptability, while simultaneously reducing weight and extending service life. This allows the rope to possess excellent strength, stability, and durability under extreme loads and complex environments. By incorporating inner core strands 2, the rope's service life is extended. The rope is reinforced using alternating loops of basalt fiber 201 and glass fiber 202, combined with high-performance basalt fiber materials made from basalt fiber waste and additives. This not only improves the overall strength, toughness, and high-temperature resistance of the inner core strands 2 but also effectively reduces material costs and achieves resource recycling. The inclusion of outer core strands 3 enhances the rope's fire resistance. The use of flexible flame-retardant fibers and a flame-retardant coating significantly improves the rope's fire resistance, enhancing its safety and stability in high-temperature environments such as fires.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high tensile strength basalt fiber rope, characterized in that, The high tensile strength basalt fiber rope includes a support core frame (1), an inner core rope strand (2) is provided on the outside of the support core frame (1), an outer core rope strand (3) is provided on the outside of the inner core rope strand (2), and a sheath (4) is provided on the outside of the outer core rope strand (3). The support core frame (1) includes a core rope (101) and a reinforcing strand (102) wrapped around the outside of the core rope (101), and an elastic covering layer (103) is coated between the core rope (101) and the reinforcing strand (102). The elastic coating layer (103) is made of silicone rubber powder, ethylene-propylene block copolymer, thickener, flame retardant, defoamer, bactericide, diatomaceous earth, foam ceramic particles, nano silica, and nano iron dioxide. The inner core strand (2) is composed of basalt fiber (201) and glass fiber (202); and the basalt fiber (201) and the glass fiber (202) are wrapped around the outside of the elastic covering layer (103) in an alternating manner.

2. The high tensile strength basalt fiber rope according to claim 1, characterized in that, The reinforcing strand (102) is made of multiple strands of steel wire twisted together.

3. The high tensile strength basalt fiber rope according to claim 1, characterized in that, The basalt fiber (201) is prepared from basalt, additives, zinc borate, boron oxide and phosphorus pentoxide.

4. The high tensile strength basalt fiber rope according to claim 3, characterized in that, The additives include at least one of aluminum oxide, magnesium oxide, calcium oxide, silicon dioxide, or titanium oxide.

5. The high tensile strength basalt fiber rope according to claim 4, characterized in that, The basalt mentioned is basalt fiber waste.

6. The high tensile strength basalt fiber rope according to claim 4, characterized in that, The outer core strand (3) is composed of several flexible flame-retardant fibers (301) wrapped around the outside of the basalt fiber (201) and the glass fiber (202), and the outside of the flexible flame-retardant fibers (301) is coated with a flame-retardant coating.

7. The high tensile strength basalt fiber rope according to claim 6, characterized in that, The flexible flame-retardant fiber (301) is made of polyamide fiber.