Aramid nanocomposite fiber hoisting belt

Abstract

The utility model discloses a kind of aramid nanometer composite fiber hoisting belts, it is related to special hoisting equipment technical field, the aramid nanometer composite fiber hoisting belt includes hoisting belt body, connecting piece is provided on the hoisting belt body, and hook is provided on connecting piece, the hoisting belt body is sequentially arranged as inner core layer, reinforcing layer, cement layer and wear layer from inside to outside, which is set on the outside of inner core layer, the inner core layer is three-dimensional woven aramid fiber core, the reinforcing layer is sequentially divided into basic reinforcing layer, directional reinforcing layer and interface layer from inside to outside, the basic reinforcing layer is aramid nanometer fiber-graphene polyurethane composite layer treated by oxygen / nitrogen two-stage plasma, the directional reinforcing layer is bidirectional cross aramid nanometer fiber membrane, the interface layer is polyurethane bottom layer composite nano alumina reinforced fluorosilicon resin surface layer containing silicon carbide nanowire. The aramid nanometer composite fiber hoisting belt is strong in anti-craving and anti-compression performance, and high in outdoor use strength, strong in endurance.

Description

Technical Field

[0001] This utility model relates to the field of special lifting equipment technology, specifically to an aramid nanocomposite fiber lifting sling. Background Technology

[0002] The formic acid vacuum furnace mainly consists of a heater, a temperature controller, a vacuum pump, and a glass reactor. It utilizes the decomposition reaction of formic acid at high temperatures to release high-purity hydrogen and carbon dioxide. When the formic acid decomposition temperature reaches 360°C, the decomposition reaction begins, and heat is released as the reaction proceeds, causing a chain reaction.

[0003] Formic acid vacuum furnaces operate under vacuum or low-pressure conditions, removing a large amount of air from contact with the material, reducing oxidation reactions, and providing a more ideal processing environment. At the same time, the vacuum environment significantly improves the decomposition efficiency of formic acid, and the low pressure helps to lower the boiling point of formic acid, thereby accelerating the decomposition rate.

[0004] Currently, the extremely high internal temperature of vertical formic acid vacuum furnaces can easily damage the equipment during use, making it inconvenient to install handling equipment inside the furnace. Handling equipment placed outside the furnace will develop gaps at the joints after long-term use, allowing air to easily enter the furnace under atmospheric pressure and reducing its effectiveness.

[0005] Therefore, in response to the above problems, the applicant needs to design an aramid nanocomposite fiber lifting strap to solve the problem. Utility Model Content

[0006] The purpose of this invention is to provide an aramid nanocomposite fiber lifting sling to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an aramid nanocomposite fiber lifting sling, comprising a lifting sling body, a connector on the lifting sling body, and a hook on the connector. The lifting sling body is configured from the inside out as an inner core layer, a reinforcing layer covering the outer side of the inner core layer, an adhesive layer, and a wear-resistant layer. The inner core layer is a three-dimensional woven aramid fiber core. The reinforcing layer is configured from the inside out as a basic reinforcing layer, an oriented reinforcing layer, and an interface layer. The basic reinforcing layer is an aramid nanofiber-graphene polyurethane composite layer treated with oxygen / nitrogen dual-stage plasma. The oriented reinforcing layer is a bidirectional cross-linked aramid nanofiber membrane. The interface layer is a polyurethane bottom layer containing silicon carbide nanowires combined with a nano-alumina-reinforced fluorosilicone resin surface layer. The basic reinforcing layer, the oriented reinforcing layer, and the interface layer are chemically bonded by plasma treatment.

[0008] Furthermore, the inner core layer is formed into a hollow tubular structure using an X-shaped three-dimensional weaving process, and the pores of the core layer are filled with an epoxy resin matrix containing 2-5 wt% carbon nanotubes.

[0009] Through the above structural design, the hollow tubular structure formed by the X-shaped three-dimensional weaving process improves the uniformity of fiber stress distribution by 38%. Combined with an epoxy resin matrix reinforced with 2-5wt% carbon nanotubes, it achieves a layer compression modulus of 12-15GP and a 45% increase in crush resistance. Furthermore, the resin injection pores will reduce weight by 8-10% while ensuring structural density.

[0010] Furthermore, the wear-resistant layer is made of ultra-high molecular weight polyethylene / silicon carbide nanoparticle composite material, which is bonded to the reinforcing layer through a hot pressing molding process.

[0011] The above structural design provides strong wear resistance, and the hot pressing process results in high peel strength, which is 60% higher than conventional bonding.

[0012] Furthermore, the surface of the wear-resistant layer is laser-etched with honeycomb-shaped microgrooves, and the honeycomb-shaped microgrooves are arranged in a hexagonal pattern.

[0013] Through the above structural design, the hexagonal honeycomb microgroove structure will reduce the friction coefficient of the wear-resistant layer surface.

[0014] Furthermore, the honeycomb-shaped microgrooves are embedded with titanium dioxide microparticles with a diameter of 20-30 μm, and the surface of the titanium dioxide microparticles is coated with a polydopamine adhesive layer.

[0015] Through the above structural design, titanium dioxide microparticles, after being modified with polydopamine, exhibit high ultraviolet reflectivity and high anti-aging properties.

[0016] Furthermore, the adhesive layer is a transitional adhesive layer containing 3-aminopropyltriethoxysilane, with a thickness of 5-8 μm and a silane concentration of 2.5-3.8 wt%.

[0017] Through the above structural design, a Si-O-Si covalent bond network is formed, with an interfacial shear strength of 28-32 MPa and an elongation at break of the adhesive layer of >250%, effectively buffering interlayer stress.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This aramid nanocomposite fiber lifting sling addresses the deformation defects of polyester fibers by employing an X-shaped three-dimensional woven aramid core layer infused with 2-5 wt% carbon nanotube epoxy resin to form a mesh reinforcement system, thereby improving the sling's creep resistance and crush resistance. A plasma treatment layer is used to construct the reinforcement layer, forming COC and CN chemical bonds at the interface between the aramid nanofibers and graphene polyurethane, achieving an interlaminar shear strength of 50-55 MPa, a 120% improvement over conventional physical bonding, effectively eliminating the risk of delamination failure. An ultra-high molecular weight polyethylene / silicon carbide wear-resistant layer combined with hexagonal honeycomb microgrooves and titanium dioxide / polydopamine composite microparticles achieves an ultraviolet reflectivity >92%, providing high strength and durability for outdoor use. A 3-aminopropyltriethoxysilane-containing adhesive layer forms a Si-O-Si three-dimensional network structure, offering excellent adhesion, long service life, and fully meeting the requirements of extreme working conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the layered structure of the hoisting sling body of this utility model;

[0022] Figure 3 This is a schematic diagram of the inner core structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the layered structure of the reinforcing layer of this utility model;

[0024] Figure 5 This is a schematic diagram of the wear-resistant layer structure of this utility model.

[0025] In the diagram: 1. Lifting sling body; 2. Connector; 3. Hook; 4. Inner core layer; 5. Reinforcing layer; 6. Adhesive layer; 7. Wear-resistant layer; 8. Basic reinforcing layer; 9. Oriented reinforcing layer; 10. Interface layer; 11. Honeycomb microgroove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-5As shown, the present invention discloses an aramid nanocomposite fiber lifting sling, comprising a lifting sling body 1, a connector 2 on the lifting sling body 1, and a hook 3 on the connector 2. The lifting sling body 1 is configured from the inside out as an inner core layer 4, a reinforcing layer 5 covering the outer side of the inner core layer 4, an adhesive layer 6, and a wear-resistant layer 7. The inner core layer 4 is a three-dimensional woven aramid fiber core. The reinforcing layer 5 is configured from the inside out as a basic reinforcing layer 8, an oriented reinforcing layer 9, and an interface layer 10. The basic reinforcing layer 8 is an aramid nanofiber-graphene polyurethane composite layer treated with oxygen / nitrogen dual-stage plasma. The oriented reinforcing layer 9 is a bidirectional cross-linked aramid nanofiber membrane. The interface layer 10 is a polyurethane bottom layer containing silicon carbide nanowires, combined with a nano-alumina-reinforced fluorosilicone resin surface layer. The basic reinforcing layer 8, the oriented reinforcing layer 9, and the interface layer 10 are chemically bonded by plasma treatment.

[0028] The inner core layer 4 is formed into a hollow tubular structure using an X-shaped three-dimensional weaving process. The core layer pores are filled with an epoxy resin matrix containing 2-5 wt% carbon nanotubes. The hollow tubular structure formed by the X-shaped three-dimensional weaving process improves the uniformity of fiber stress distribution by 38%. Combined with the epoxy resin matrix reinforced with 2-5 wt% carbon nanotubes, the layer compressive modulus reaches 12-15 GP and the crush resistance is improved by 45%. Furthermore, the resin filling pores will reduce the weight by 8-10% while ensuring structural density.

[0029] The wear-resistant layer 7 is made of ultra-high molecular weight polyethylene / silicon carbide nanoparticle composite material, which is combined with the reinforcing layer 5 through hot pressing molding process. It has strong wear resistance and the hot pressing molding process also makes the peel strength high, which is 60% higher than conventional bonding. The surface of the wear-resistant layer 7 is laser-etched with honeycomb microgrooves 11, and the honeycomb microgrooves 11 are arranged in hexagons. The hexagonal honeycomb microgrooves 11 structure will reduce the friction coefficient of the surface of the wear-resistant layer 7. The honeycomb microgrooves 11 are embedded with titanium dioxide microparticles with a diameter of 20-30μm. The surface of the titanium dioxide microparticles is coated with a polydopamine adhesive layer. After the titanium dioxide microparticles are modified with polydopamine, they have high ultraviolet reflectivity and high anti-aging performance.

[0030] The adhesive layer 6 is a transitional adhesive layer containing 3-aminopropyltriethoxysilane, with a thickness of 5-8 μm and a silane concentration of 2.5-3.8 wt%, forming a Si-O-Si covalent bond network. The interfacial shear strength reaches 28-32 MPa, and the elongation at break of the adhesive layer is >250%, effectively buffering interlayer stress.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An aramid nanocomposite fiber sling belt, comprising a sling belt body (1), a connecting piece (2) is arranged on the sling belt body (1), and a sling hook (3) is arranged on the connecting piece (2), characterized in that: The lifting sling body (1) is configured from the inside out as an inner core layer (4), a reinforcing layer (5) covering the outer side of the inner core layer (4), an adhesive layer (6) and a wear-resistant layer (7). The inner core layer (4) is a three-dimensional woven aramid fiber core. The reinforcing layer (5) is configured from the inside out as a basic reinforcing layer (8), an oriented reinforcing layer (9) and an interface layer (10).

2. The aramid nanocomposite fiber sling strap of claim 1, wherein: The inner core layer (4) is formed into a hollow tubular structure using an X-shaped three-dimensional braiding process, and the core layer pores are filled with an epoxy resin matrix.

3. The aramid nanocomposite fiber sling of claim 1, wherein: The wear-resistant layer (7) and the reinforcing layer (5) are hot-pressed together.

4. The aramid nanocomposite fiber lifting sling according to claim 3, characterized in that: The wear-resistant layer (7) has honeycomb-shaped microgrooves (11) laser-etched on its surface, and the honeycomb-shaped microgrooves (11) are arranged in a hexagonal pattern.

5. The aramid nanocomposite fiber webbing of claim 1, wherein: The adhesive layer (6) is a transition adhesive layer with a thickness of 5-8 μm.

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