Basalt fiber reinforced polyethylene BFRPE high-resistance pipe

Abstract

The utility model discloses a basalt fiber reinforced polyethylene (BFRPE) high-resistance pipe, which comprises a base pipe layer and a composite material layer, a reinforcing structure is arranged on the base pipe layer, and the reinforcing structure is spirally adhered to the periphery of the base pipe layer; the composite material layer is bonded to the middle of the reinforcing structure in a hot melting mode and extends in the length direction of the reinforcing structure, and the composite material layer is further bonded to the periphery of the base pipe layer in a hot melting mode. A basalt fiber net is arranged in the composite material layer, and basalt fibers are arranged in the base pipe layer. The high-resistance pipe has the advantages that the basalt fiber composite material layer, the base pipe layer and the reinforcing structure are bonded through hot melting, delamination or gaps between the two structures are prevented, the overall strength and rigidity of the high-resistance pipe are improved, and it is guaranteed that the high-resistance pipe has good mechanical performance.

Description

Technical Field

[0001] The utility model relates to the technology of pipe structures, and particularly to a basalt fiber reinforced polyethylene BFRPE high-resistance pipe. Background Art

[0002] On the outer wall of the base material of a conventional HDPE high-density polyethylene reinforced winding pipe, there is a corrugated pipe, which increases the ring stiffness of the pipe. However, the overall strength of the pipe is not high, and the cladding and the inner lining pipe of the pipe are made of materials that cannot be melted together, and there is a gap between the cladding and the inner lining pipe, resulting in poor mechanical properties of the pipe and being prone to deformation and cracking during use. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is that the existing reinforced winding pipe has poor mechanical properties and is prone to cracking and deformation during use. The purpose is to provide a basalt fiber reinforced polyethylene BFRPE high-resistance pipe. By arranging basalt fibers in both the composite material layer and the base pipe layer, it is ensured that the two are melted into a solid wall, improving the overall strength and elastic modulus of the high-resistance pipe, ensuring that the pipe has good mechanical properties, and preventing deformation and cracking during use.

[0004] The utility model is realized through the following technical solutions:

[0005] A basalt fiber reinforced polyethylene BFRPE high-resistance pipe includes a base pipe layer and a composite material layer. A reinforcing structure is arranged on the base pipe layer, and the reinforcing structure is hot-melt bonded to the outer periphery of the base pipe layer; the composite material layer is hot-melt bonded to the middle of the reinforcing structure and extends along the length direction of the reinforcing structure, and the composite material layer is also hot-melt bonded to the outer periphery of the base pipe layer; a basalt fiber mesh is arranged in the composite material layer, and basalt fibers are arranged in the base pipe layer.

[0006] The beneficial effect of the utility model is that by hot-melt bonding a reinforcing structure to the outer periphery of the base pipe layer and bonding a composite material layer to the middle of the reinforcing structure, a basalt fiber mesh is arranged in the composite material layer, and basalt fibers are arranged in the base pipe layer. Utilizing the characteristics of basalt fibers with high elastic modulus and good tensile strength, the tensile strength and elastic modulus of the reinforcing structure and the base pipe layer are increased, thereby improving the overall strength, stiffness and elastic modulus of the high-resistance pipe; a composite material layer is also arranged on the outer periphery of the base pipe layer to increase the strength and stiffness of the base pipe layer, further improving the strength and stiffness of the high-resistance pipe. And the composite material layer and the base pipe layer both containing basalt fibers are hot-melt bonded to prevent delamination or gaps between the bonded structures, improving the overall strength and stiffness of the high-resistance pipe body to ensure good mechanical properties.

[0007] In some embodiments, the composite material layer is formed by integrating a basalt fiber mesh and a polyethylene resin through a sizing agent, so as to integrate the basalt fiber mesh and the polyethylene resin, ensuring that the composite material layer has good tensile strength and elastic modulus.

[0008] In some embodiments, the base pipe layer is formed by helically winding a strip. The base material of the strip is modified ultra-high molecular weight polyethylene, and basalt fibers are provided in the modified ultra-high molecular weight polyethylene. Since basalt fibers have the characteristics of high elastic modulus and good tensile strength, basalt fibers are provided in the modified ultra-high molecular weight polyethylene, so that when the pipe is subjected to loads such as impact, compression, and shear, the load will be transmitted to the basalt fibers in the form of shear components, enabling the basalt fibers to share a part of the external load acting on the base pipe layer, thereby increasing the pipe strength.

[0009] In some embodiments, the composite material layer is formed by winding the strip. This facilitates the implementation of a hot melt process to bond the composite material layer to the pipe and the strengthening structure, forming a solid wall, preventing delamination and the generation of gaps, improving mechanical properties, and thus significantly increasing the ring stiffness.

[0010] In some embodiments, it further includes a cladding layer. The cladding layer covers the inner and outer sides of the pipe body. The pipe body is formed after bonding the base pipe layer, the strengthening structure, and the composite material layer. The cladding layer is made of HDPE high-density polyethylene material. Since the contact between basalt fibers and water will cause environmental pollution, therefore, by providing cladding layers on both the inner and outer sides of the pipe body, it is possible to prevent the contact between basalt fibers and water and avoid environmental pollution.

[0011] In some embodiments, the cladding layer is bonded to the pipe body through a hot melt process. By bonding the cladding layer to the pipe body through a hot melt process, a solid wall is formed to prevent the cladding layer from cracking.

[0012] In some embodiments, the cross-section of the strengthening structure is trapezoidal. The composite material layer is arranged along the height direction of the strengthening structure, and both sides of the composite material layer are respectively connected to the top of the strengthening structure and the base pipe layer. By providing the composite material layer to support the top and bottom of the trapezoid, the strength and stiffness of the strengthening structure are further enhanced, and the ring stiffness of the pipe body is also increased.

[0013] In some embodiments, the cross-section of the strengthening structure is n-shaped. The composite material layer is arranged along the height direction of the strengthening structure, and both sides of the composite material layer are respectively connected to the top of the strengthening structure and the base pipe layer. By setting the cross-section of the strengthening structure to be n-shaped and using the composite material layer to support the top of the n-shape, the strength and stiffness of the strengthening structure are further enhanced, and the ring stiffness of the pipe body is also increased.

[0014] In some embodiments, the composite material layer is adhesively bonded to the outer periphery of the reinforcing structure. By adhesively bonding the composite material layer to the outer periphery of the reinforcing structure, the strength and stiffness of the reinforcing structure are increased, and the ring stiffness of the pipe body is also increased.

[0015] In some embodiments, the reinforcing structure is provided with a support portion. Both ends of the support portion are respectively connected to the top of the reinforcing structure and the base pipe layer. The composite material layer is located in the middle of the support portion and extends along the height direction of the support portion. By providing the support portion, the radial strength and stiffness of the reinforcing structure are increased.

[0016] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0017] 1. By spirally adhesively bonding a reinforcing structure to the outer periphery of the base pipe layer and adhesively bonding a composite material layer in the middle of the reinforcing structure, and a basalt fiber mesh is provided in the composite material layer. Utilizing the characteristics of basalt fiber having a high elastic modulus and good tensile strength, the tensile strength and elastic modulus of the reinforcing structure are increased, thereby improving the overall strength, stiffness and elastic modulus of the high-resistant pipe.

[0018] 2. A composite material layer is also provided on the outer periphery of the base pipe layer, increasing the strength and stiffness of the base pipe layer, and further improving the strength and stiffness of the high-resistant pipe.

[0019] 3. The composite material layer, the base pipe layer and the reinforcing structure all containing basalt fiber are adhesively bonded by hot melting, preventing delamination or gaps between the adhesively bonded structures, improving the overall strength and stiffness of the high pipe body, so as to ensure good mechanical properties.

[0020] 4. By providing the composite material layer to support the top and bottom of the trapezoid, the strength and stiffness of the reinforcing structure are improved, and the ring stiffness and impact resistance of the pipe body are also increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0022] Figure 1 is the axial sectional view of the present utility model;

[0023] Figure 2 is the present utility model Figure 1 the sectional view taken along A-A in

[0024] Figure 3 is the external shape structure diagram of the present utility model.

[0025] The reference numerals in the drawings and the corresponding names of the components:

[0026] Sheathing layer 2, reinforcing structure 3, weight-reducing holes 31, supporting parts 32, basalt fiber mesh 33, composite material layer 5, strip 6. Specific implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and do not limit the present utility model.

[0028] Throughout the specification, the reference to "an embodiment", "embodiment", "an example" or "example" means that a specific feature, structure or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present utility model. Thus, the phrases "an embodiment", "embodiment", "an example" or "example" appearing throughout the specification do not necessarily refer to the same embodiment or example. In addition, the specific features, structures or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present utility model.

[0030] The terms "first", "second", etc. used in the present utility model are only used to distinguish the corresponding components clearly and do not aim to limit any order or emphasize importance, etc. In addition, the term "connection" used herein, without special explanation, may be directly connected or indirectly connected through other components.

[0031] This embodiment provides a basalt fiber reinforced polyethylene BFRPE high-resistant pipe, as Figures 1 - 3As shown in the figure, it includes a base pipe layer and a composite material layer 5. A strengthening structure 3 is provided on the base pipe layer, and the strengthening structure 3 is spirally bonded to the outer periphery of the base pipe layer; the composite material layer 5 is hot-melt bonded to the middle of the strengthening structure 3 and extends along the length direction of the strengthening structure 3, and the composite material layer 5 is also hot-melt bonded to the outer periphery of the base pipe layer; a basalt fiber mesh 33 is provided in the composite material layer 5, and basalt fibers are provided in the base pipe layer. By spirally bonding a strengthening structure 3 to the outer periphery of the base pipe layer and bonding a composite material layer 5 to the middle of the strengthening structure 3, and a basalt fiber mesh 33 is provided in the composite material layer 5, using the characteristics of high elastic modulus and good tensile strength of basalt fibers, the tensile strength and elastic modulus of the strengthening structure 3 are increased, thereby improving the overall strength, stiffness and elastic modulus of the high-resistant pipe.

[0032] See Figure 1 and Figure 2 , the composite material layer 5 is formed by integrating a basalt fiber mesh and polyethylene resin through an impregnating agent. To integrate the basalt fiber mesh and polyethylene resin to ensure that the composite material layer 5 has good tensile strength and elastic modulus.

[0033] See Figure 1 , the base pipe layer is formed by spirally winding a strip 6. The base material of the strip 6 is modified ultra-high molecular weight polyethylene (linear polyethylene without branches with a molecular weight of more than 1.5 million), and basalt fibers are provided in the modified ultra-high molecular weight polyethylene. The basalt fibers are short fibers (non-continuous long fibers). The continuous winding forming process of the strip 6 can quickly decompose the external load into the entire pipeline. Also, due to the characteristics of high elastic modulus and good tensile strength of basalt fibers, in the basalt fiber-reinforced polyethylene resin-based composite material, a block copolymer macromolecular coupling agent of polystyrene and 2-hydroxyethyl acrylate is introduced to improve the interfacial properties of the composite material, so that the basalt fibers and the polyethylene matrix have good cross-sectional adhesion, quickly disperse the external load, absorb the energy of the external force, and achieve enhanced toughness of the composite material with a small tensile deformation. The tensile strength of the material can reach 38 MPa. When the pipe is subjected to loads such as impact, compression, and shear, the load will be transmitted to the basalt fibers in the form of shear components, so that the basalt fibers share a part of the external load acting on the base pipe layer, thereby increasing the pipe strength. The ring stiffness of the pipe can reach 26 KN, far exceeding the maximum ring stiffness of 16 KN of the steel belt-reinforced polyethylene spiral corrugated pipe.

[0034] See Figure 1 and Figure 3 , the composite material layer 5 is bonded to the pipe through a hot-melt process. By implementing the hot-melt process to bond the composite material layer 5 to the pipe to form a solid wall, preventing delamination and generating gaps, improving the mechanical properties, and thus significantly increasing the ring stiffness.

[0035] See Figure 1 and Figure 2 It further includes a cladding layer 2 which is wrapped around the inner and outer sides of the pipe body. The pipe body is formed by bonding a base pipe layer, a strengthening structure 3 and a composite material layer 5. The cladding layer 2 is made of HDPE (high density polyethylene) material. Since the contact between basalt fiber and water will cause environmental pollution, therefore, by arranging the cladding layer 2 on both the inner and outer sides of the pipe body, it can prevent the contact between basalt fiber and water and avoid causing environmental pollution. Also, because the outer surface of the cladding layer uses high density polyethylene, the outer surface of the cladding layer is smooth with a small friction coefficient and strong flow-through ability.

[0036] See Figures 1 to 3 The cladding layer 2 and the pipe body are bonded by a hot melt process. By bonding the cladding layer 2 and the pipe body through a hot melt process, a solid wall is formed to prevent the cladding layer from cracking.

[0037] See Figures 1 to 3 The cross-section of the strengthening structure 3 is trapezoidal. The composite material layer 5 is arranged along the height direction of the strengthening structure 3, and both sides of the composite material layer 5 are respectively connected to the top and bottom of the strengthening structure 3. By arranging the composite material layer 5 to support the top and bottom of the trapezoid, the strength and stiffness of the strengthening structure 3 are improved, and the ring stiffness of the pipe body is also increased. The design of the trapezoidal cross-section has a larger load-bearing surface, stronger load-bearing capacity, a larger contact area with the soil, uniform stress, good mechanical properties, and the pipe body is not easy to deform and crack. Coupled with the modified basalt fiber reinforced polyethylene resin-based composite material as the main raw material for producing the pipe, the product strength is increased by more than 48%, making the pipe stronger and the structure more stable, and it will not crack or deform easily when encountering an instantaneous super-large pressure. After laboratory testing, the creep ratio of the pipe is ≤3.2%. In the present utility model, the composite material arranged in the strengthening structure 3 can be replaced by high-strength spring steel wire.

[0038] See Figures 1 to 3 The cross-section of the strengthening structure 3 is in the shape of 'n'. The composite material layer 5 is arranged along the height direction of the strengthening structure 3, and both sides of the composite material layer 5 are respectively connected to the top of the strengthening structure 3 and the base pipe layer. By setting the cross-section of the strengthening structure 3 as 'n' shape and using the composite material layer 5 to support the top of the 'n' shape, the strength and stiffness of the strengthening structure 3 are improved, and the ring stiffness of the pipe body is also increased.

[0039] See Figures 1 to 3 The composite material layer 5 is bonded to the outer periphery of the strengthening structure 3. By bonding the composite material layer 5 to the outer periphery of the strengthening structure 3, the strength and stiffness of the strengthening structure 3 are increased, and the ring stiffness of the pipe body is also increased.

[0040] See Figures 1 to 3, the strengthening structure is provided with a supporting portion 32, both ends of the supporting portion 32 are respectively connected to the top of the strengthening structure 3 and the base pipe layer, and the composite material layer 5 is located in the middle of the supporting portion 32 and extends along the height direction of the supporting portion 32. By providing the supporting portion 32, the radial strength and stiffness of the strengthening structure 3 are increased. A weight-reducing hole 31 is provided inside the strengthening structure 3. By providing the weight-reducing hole 31 inside the strengthening structure 3, weight reduction is achieved on the premise of meeting the strength and stiffness of the strengthening structure 3.

[0041] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A basalt fiber reinforced polyethylene BFRPE high resistance pipe, characterized in that: include: A base tube layer, wherein a reinforcement structure is disposed on the base tube layer and the reinforcement structure is hot-melt-bonded to the outer periphery of the base tube layer; A composite material layer, wherein the composite material layer is hot-melt bonded to the middle of the reinforcement structure and extends along the length direction of the reinforcement structure, and the composite material layer is also hot-melt bonded to the periphery of the base tube layer; a basalt fiber mesh is arranged in the composite material layer, and basalt fibers are arranged in the base tube layer.

2. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 1, characterized in that: The composite material layer is formed by integrating basalt fiber mesh and polyethylene resin through a wetting agent.

3. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 1, characterized in that: The base pipe layer is formed by spirally winding a plate strip, the base material of the plate strip is modified ultra-high molecular weight polyethylene, and basalt fibers are arranged in the modified ultra-high molecular weight polyethylene.

4. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 3, characterized in that: The composite material layer is formed by winding the plate strip.

5. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 1, characterized in that: It also includes a covering layer, which covers the inner and outer sides of the pipe body. The pipe body is formed by bonding a base pipe layer, a reinforcement structure and a composite material layer. The covering layer is made of HDPE high-density polyethylene material.

6. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 5, characterized in that: The cladding layer and the pipe body are bonded together by a hot-melt process.

7. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 1, characterized in that: The cross section of the reinforcement structure is trapezoidal in shape. The composite material layer is arranged along the height direction of the reinforcement structure. Two sides of the composite material layer are respectively connected to the top of the reinforcement structure and the base pipe layer.

8. The basalt fiber reinforced polyethylene BFRPE high resistance pipe according to claim 1, characterized in that: The cross section of the reinforcement structure is in an n-shape, the composite material layer is arranged along the height direction of the reinforcement structure, and two sides of the composite material layer are respectively connected to the top of the reinforcement structure and the base pipe layer.

9. The basalt fiber reinforced polyethylene (BFRPE) high-resistance pipe according to claim 7 or 8, characterized in that: The composite material layer is bonded to the outer periphery of the reinforcement structure.

10. The basalt fiber reinforced polyethylene (BFRPE) high resistance pipe according to claim 7 or 8, characterized in that: The reinforcement structure is provided with a support portion, both ends of which are respectively connected to the top of the reinforcement structure and the base pipe layer, and the composite material layer is located in the middle of the support portion and extends along the height direction of the support portion.

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