High-performance fiber reinforced PPR pipe

Abstract

The utility model discloses a high-performance fiber reinforced PPR (pentatricopeptide repeats) pipe. The pipe sequentially comprises an inner layer (1), a fiber reinforced layer (2) and an outer layer (3) from inside to outside, and the fiber reinforced layer (2) is formed by winding at least two fiber bundles. The pipe has the characteristics of high toughness and high strength, and overcomes the defects of low temperature resistance, poor shear resistance and high cost caused by manufacturing materials.

Description

Technical Field

[0001] The utility model relates to the field of pipes, and more specifically, to a high-performance fiber-reinforced PPR pipe. Background Art

[0002] PPR pipes are widely used in household water supply systems due to their good high-temperature resistance and sanitary performance. However, their low-temperature impact performance is slightly poor. Especially when the temperature is below -10°C, the pipes become brittle and are prone to cracking. To address this defect of PPR, the traditional technology uses the addition of POE to toughen and modify the pipes. However, this method has high requirements for the hydraulic performance stability and upper limit of PPR raw materials. Therefore, the hydraulic qualification of pipes often fails. In addition, blending and extruding PP with high-performance resin pellets to modify them as functional masterbatches or functional layers, and extruding and forming PP, modified adhesives, and high-performance resin pellets by multi-layer co-extrusion methods cannot give full play to the ultra-high tensile strength characteristics of high-performance resins, and the flexibility of the pipes decreases.

[0003] Compared with pipes made by traditional methods or materials, pipes made of high-performance resin fibers can take into account both toughness and strength, but their materials generally have certain defects. High-performance resin fibers include: ultra-high molecular weight polyethylene (UPE) fibers, ultra-high molecular weight polypropylene (UPP) fibers, carbon fibers, aramid fibers, and polyester fibers. However, ultra-high molecular weight polyethylene fibers have low temperature resistance, carbon fibers have poor shear resistance, aramid fibers have high costs, and polyester fibers have relatively low strength.

[0004] The prior art discloses a fiber-reinforced composite hose, which includes an outer pipe and an inner pipe. A layer of mesh fiber braid is also sandwiched between the outer pipe and the inner pipe. Adhesives are respectively coated on the outer surface of the inner pipe and the outside of the fiber braid. This hose does not overcome the defects brought by material characteristics. Summary of the Utility Model

[0005] Aiming at the characteristics that the pipes in the prior art cannot have both high toughness and high strength, and having the defects of low temperature resistance, poor shear resistance, and high cost brought by the manufacturing materials, the utility model provides a high-performance fiber-reinforced PPR pipe.

[0006] The primary object of the utility model is to solve the above technical problems, and the technical solution of the utility model is as follows:

[0007] A high-performance fiber-reinforced PPR pipe sequentially includes an inner layer, a fiber-reinforced layer, and an outer layer from the inside to the outside;

[0008] The fiber-reinforced layer is formed by winding at least two fiber bundles.

[0009] Further, at least two single fiber bundles or composite fiber bundles are wound in a warp and weft cross pattern to form the fiber-reinforced layer.

[0010] Furthermore, at least two composite fiber bundles are wound in a warp and weft cross pattern to form a fiber reinforced layer.

[0011] Furthermore, each single fiber bundle is formed by winding the same fiber.

[0012] Furthermore, each composite fiber bundle is formed by winding different fibers.

[0013] Furthermore, the fiber includes any one of carbon fiber, glass fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, and ultra-high molecular weight polypropylene fiber.

[0014] Furthermore, the winding pitch of the fiber bundle is less than 1.5 mm.

[0015] Furthermore, the angle between the fiber bundle and the center line of the pipe is 50 to 65 degrees.

[0016] Furthermore, the thickness of the fiber reinforced layer is 0.9 to 7.6 mm.

[0017] Furthermore, the average diameter of the fiber bundle is 0.4 to 2.1 mm.

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

[0019] In the present utility model, the fiber reinforced layer is formed by winding at least two fiber bundles, so that the pipe has the characteristics of high toughness and high strength, and overcomes the defects of low temperature resistance, poor shear resistance, and high cost brought by the production materials. Description of the Drawings

[0020] Figure 1 It is a structural diagram of a high-performance fiber-reinforced PPR pipe provided for Example 1.

[0021] Figure 2 It is a schematic diagram of the fiber bundle winding method provided for Example 1.

[0022] Figure 3 It is a schematic diagram of the composite fiber bundle winding method provided for Example 1. Detailed Embodiments

[0023] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent;

[0024] To better illustrate this embodiment, some components in the drawings are omitted, enlarged, or reduced, and do not represent the size of the actual product;

[0025] For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Embodiment 1

[0028] As Figure 1 shown, a high-performance fiber-reinforced PPR pipe includes, from the inside out, an inner layer 1, a fiber-reinforced layer 2, and an outer layer 3;

[0029] The fiber-reinforced layer 2 is formed by winding at least two fiber bundles.

[0030] Furthermore, at least two single fiber bundles or composite fiber bundles are wound in a warp and weft cross pattern to form the fiber-reinforced layer 2.

[0031] Furthermore, as Figure 2 shown, at least two composite fiber bundles are wound in a warp and weft cross pattern to form the fiber-reinforced layer 2.

[0032] Furthermore, each single fiber bundle is formed by winding the same fiber.

[0033] Furthermore, as Figure 3 shown, each composite fiber bundle is formed by winding different fibers.

[0034] Furthermore, the fiber includes any one of carbon fiber, glass fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, and ultra-high molecular weight polypropylene fiber.

[0035] Furthermore, the winding pitch of the fiber bundle is less than 1.5 mm.

[0036] Furthermore, the angle between the fiber bundle and the center line of the pipe is 50 to 65 degrees.

[0037] Furthermore, the thickness of the fiber-reinforced layer 2 is 0.9 to 7.6 mm.

[0038] Furthermore, the average diameter of the fiber bundle is 0.4 to 2.1 mm.

[0039] In a specific embodiment, the total thickness of the pipe is 2.8 to 27.5 mm, the thickness of the inner layer 1 is 1.1 to 15.6 mm, and the thickness of the outer layer 3 is 0.7 to 4.1 mm.

[0040] Embodiment 2

[0041] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 2.8 - 3.2 mm, the thickness of the inner layer 1 is 1.1 - 1.3 mm, the thickness of the fiber-reinforced layer 2 is 0.9 - 1.1 mm, the thickness of the outer layer 3 is 0.7 - 0.9 mm, the average diameter of the fiber bundle is 0.4 - 0.6 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0042] Example 3

[0043] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 3.3 - 3.7 mm, the thickness of the inner layer 1 is 1.4 - 1.6 mm, the thickness of the fiber-reinforced layer 2 is 0.9 - 1.1 mm, the thickness of the outer layer 3 is 0.9 - 1.1 mm, the average diameter of the fiber bundle is 0.4 - 0.6 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0044] Example 4

[0045] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 4.3 - 4.7 mm, the thickness of the inner layer 1 is 1.9 - 2.1 mm, the thickness of the fiber-reinforced layer 2 is 1.4 - 1.6 mm, the thickness of the outer layer 3 is 0.9 - 1.1 mm, the average diameter of the fiber bundle is 0.5 - 0.7 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0046] Example 5

[0047] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 5.3 - 5.7 mm, the thickness of the inner layer 1 is 2.4 - 2.6 mm, the thickness of the fiber-reinforced layer 2 is 1.9 - 2.1 mm, the thickness of the outer layer 3 is 0.9 - 1.1 mm, the average diameter of the fiber bundle is 0.7 - 0.9 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0048] Example 6

[0049] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 6.8 - 7.2 mm, the thickness of the inner layer 1 is 2.9 - 3.1 mm, the thickness of the fiber-reinforced layer 2 is 2.4 - 2.6 mm, the thickness of the outer layer 3 is 1.4 - 1.6 mm, the average diameter of the fiber bundles is 0.7 - 0.9 mm, the winding pitch of the fiber bundles is less than 1.5 mm, and the angle between the fiber bundles and the center line of the pipe is 50 - 65 degrees.

[0050] Example 7

[0051] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 8.5 - 9.1 mm, the thickness of the inner layer 1 is 4.2 - 4.5 mm, the thickness of the fiber-reinforced layer 2 is 2.9 - 3.1 mm, the thickness of the outer layer 3 is 1.4 - 1.6 mm, the average diameter of the fiber bundles is 0.9 - 1.1 mm, the winding pitch of the fiber bundles is less than 1.5 mm, and the angle between the fiber bundles and the center line of the pipe is 50 - 65 degrees.

[0052] Example 8

[0053] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 10.2 - 10.8 mm, the thickness of the inner layer 1 is 5.4 - 5.6 mm, the thickness of the fiber-reinforced layer 2 is 3.4 - 3.6 mm, the thickness of the outer layer 3 is 1.4 - 1.6 mm, the average diameter of the fiber bundles is 0.9 - 1.1 mm, the winding pitch of the fiber bundles is less than 1.5 mm, and the angle between the fiber bundles and the center line of the pipe is 50 - 65 degrees.

[0054] Example 9

[0055] A high-performance fiber-reinforced PPR pipe based on Example 1, that is, this example uses the same high-performance fiber-reinforced PPR pipe as in Example 1. Specifically, the total thickness of the pipe in this example is 12.2 - 12.8 mm, the thickness of the inner layer 1 is 6.9 - 7.1 mm, the thickness of the fiber-reinforced layer 2 is 3.4 - 3.6 mm, the thickness of the outer layer 3 is 1.9 - 2.1 mm, the average diameter of the fiber bundles is 1.1 - 1.3 mm, the winding pitch of the fiber bundles is less than 1.5 mm, and the angle between the fiber bundles and the center line of the pipe is 50 - 65 degrees.

[0056] Example 10

[0057] A high-performance fiber-reinforced PPR pipe as described in Embodiment 1, that is, the high-performance fiber-reinforced PPR pipe used in this embodiment is the same as that in Embodiment 1. Specifically, the total thickness of the pipe described in this embodiment is 15.1 - 15.9 mm, the thickness of the inner layer 1 is 8.9 - 9.1 mm, the thickness of the fiber-reinforced layer 2 is 4.4 - 4.6 mm, the thickness of the outer layer 3 is 1.9 - 2.1 mm, the average diameter of the fiber bundle is 1.1 - 1.3 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0058] Embodiment 11

[0059] A high-performance fiber-reinforced PPR pipe as described in Embodiment 1, that is, the high-performance fiber-reinforced PPR pipe used in this embodiment is the same as that in Embodiment 1. Specifically, the total thickness of the pipe described in this embodiment is 21.5 - 22.5 mm, the thickness of the inner layer 1 is 12.9 - 13.1 mm, the thickness of the fiber-reinforced layer 2 is 5.9 - 6.1 mm, the thickness of the outer layer 3 is 2.9 - 3.1 mm, the average diameter of the fiber bundle is 1.4 - 1.6 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0060] Embodiment 12

[0061] A high-performance fiber-reinforced PPR pipe as described in Embodiment 1, that is, the high-performance fiber-reinforced PPR pipe used in this embodiment is the same as that in Embodiment 1. Specifically, the total thickness of the pipe described in this embodiment is 26.5 - 27.5 mm, the thickness of the inner layer 1 is 15.4 - 15.6 mm, the thickness of the fiber-reinforced layer 2 is 7.4 - 7.6 mm, the thickness of the outer layer 3 is 3.9 - 4.1 mm, the average diameter of the fiber bundle is 1.9 - 2.1 mm, the winding pitch of the fiber bundle is less than 1.5 mm, and the angle between the fiber bundle and the center line of the pipe is 50 - 65 degrees.

[0062] The same or similar reference numerals correspond to the same or similar components;

[0063] The terms describing the positional relationship in the drawings are for illustrative purposes only and should not be construed as a limitation of this patent;

[0064] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A high-performance fiber-reinforced PPR pipe, characterized in that, It includes an inner layer (1), a fiber-reinforced layer (2), and an outer layer (3) from the inside to the outside in sequence; The fiber-reinforced layer (2) is formed by winding at least two fiber bundles; At least two single fiber bundles or composite fiber bundles are wound in a warp and weft cross pattern to form the fiber-reinforced layer (2).

2. The high-performance fiber-reinforced PPR pipe according to claim 1, wherein Each single fiber bundle is formed by winding the same fibers.

3. The high-performance fiber-reinforced PPR pipe according to claim 1, characterized in that, Each composite fiber bundle is formed by winding different fibers.

4. The high-performance fiber-reinforced PPR pipe according to claim 2 or 3, characterized in that The fibers include any one of carbon fiber, glass fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, and ultra-high molecular weight polypropylene fiber.

5. The high-performance fiber-reinforced PPR pipe according to claim 1, wherein The winding pitch of the fiber bundles is less than 1.5 mm.

6. The high-performance fiber-reinforced PPR pipe according to claim 1, wherein, The angle between the fiber bundles and the center line of the pipe is 50 to 65 degrees.

7. The high-performance fiber-reinforced PPR pipe according to claim 1, wherein The thickness of the fiber-reinforced layer (2) is 0.9 to 7.6 mm.

8. The high-performance fiber-reinforced PPR pipe according to claim 1, wherein The average diameter of the fiber bundles is 0.4 to 2.1 mm.

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