Polypropylene water pipe and hot and cold water delivery piping system comprising the same

Abstract

The utility model provides a kind of polypropylene water pipe and hot and cold water conveying pipeline system comprising it, it is related to pipeline material technical field.The polypropylene water pipe includes polypropylene lining layer, basalt fabric laminated coating layer and basalt fiber polypropylene composite outer layer sequentially arranged from inside to outside;Wherein, the basalt fabric laminated coating layer includes n layers of basalt fabric, the n value is positive integer, and the n layers of basalt fabric are laminated to constitute basalt fabric laminated coating layer;The ratio between the thickness of the polypropylene lining layer and the thickness of basalt fabric laminated coating layer and basalt fiber polypropylene composite outer layer is 1:2~3:2~3.The utility model polypropylene water pipe is added by basalt fabric laminated coating layer, effectively improves the leakage, pipeline deformation and poor impact resistance caused by the fact that the thermal expansion coefficient of existing polypropylene water pipe is relatively large, and the strength is low.

Description

Technical Field

[0001] This utility model relates to the field of pipeline materials technology, and in particular to a polypropylene water pipe and a hot and cold water transmission pipeline system containing the same. Background Technology

[0002] Polypropylene (PPR) hot and cold water pipes are commonly used in modern buildings, often for residential water supply and heating. However, traditional PPR pipes are mostly single-layer structures, and the high coefficient of thermal expansion and low strength of polypropylene significantly limit their application.

[0003] Specifically:

[0004] 1. Polypropylene pipes have a large coefficient of thermal expansion. Single-layer polypropylene water pipes are prone to expansion and contraction stress in alternating hot and cold water environments or high-temperature environments, which may cause joint leakage or pipe deformation.

[0005] 2. Polypropylene pipes have poor impact resistance (low-temperature brittleness). Single-layer polypropylene water pipes are prone to cracking due to external impact or water hammer effect in low-temperature environments (such as below 5°C). Moreover, polypropylene pipes have limited pressure resistance compared to pipes made of other materials.

[0006] Therefore, it is both necessary and urgent to research and develop a polypropylene composite multilayer pipe to alleviate the problems caused by the large thermal expansion coefficient and low strength of existing polypropylene water pipes.

[0007] In view of the above, this utility model is hereby proposed. Utility Model Content

[0008] The primary objective of this invention is to provide a polypropylene water pipe that can effectively improve the strength and coefficient of thermal expansion of existing polypropylene pipes, thereby alleviating problems such as leakage, pipe deformation, and poor impact resistance caused by the large coefficient of thermal expansion and low strength of polypropylene materials in existing polypropylene water pipes.

[0009] The second objective of this invention is to provide a hot and cold water delivery pipeline system.

[0010] In order to achieve the above-mentioned objectives of this utility model, the following technical solution is adopted:

[0011] This utility model provides a polypropylene water pipe, which includes a polypropylene inner lining layer, a basalt fabric layered covering layer and a basalt fiber polypropylene composite outer layer arranged sequentially from the inside to the outside.

[0012] The basalt fabric laminated covering layer comprises n layers of basalt fabric, where n is a positive integer, and the n layers of basalt fabric laminated together constitute the basalt fabric laminated covering layer.

[0013] The basalt fabric has a unit area mass of 100~300g / m². 2 ;

[0014] The ratio between the thickness of the polypropylene inner lining and the thickness of the basalt fabric laminated covering layer and the basalt fiber polypropylene composite outer layer is 1:2~3:2~3.

[0015] Furthermore, the basalt fabric surface is provided with a fabric film layer, which is a high-density polyethylene film layer or a polypropylene film layer.

[0016] Furthermore, the fabric film layer is a high-density polyethylene film layer.

[0017] Furthermore, the basalt fabric laminated covering layer comprises 10 to 20 layers of basalt fabric, and the 10 to 20 layers of basalt fabric laminated together constitute the basalt fabric laminated covering layer.

[0018] Furthermore, the basalt fabric laminated covering layer comprises 15 layers of basalt fabric, which are stacked to form the basalt fabric laminated covering layer.

[0019] Furthermore, the ratio between the thickness of the polypropylene inner lining layer and the thickness of the basalt fabric laminated covering layer and the basalt fiber polypropylene composite outer layer is 1:2:3.

[0020] Furthermore, the basalt fiber polypropylene composite outer layer of the polypropylene water pipe is a polypropylene layer reinforced with continuous basalt fibers.

[0021] The basalt continuous fiber has a single filament diameter of 6~20μm, a linear density of 10~30tex, and a single roll length of ≥30m.

[0022] This utility model provides a hot and cold water delivery pipeline system, which includes the aforementioned polypropylene water pipe.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This utility model provides a polypropylene water pipe comprising, from the inside out, a polypropylene inner lining, a basalt fabric laminated covering layer, and a basalt fiber polypropylene composite outer layer. The basalt fabric laminated covering layer comprises n layers of basalt fabric, where n is a positive integer, and these n layers stacked together constitute the basalt fabric laminated covering layer. The ratio between the thickness of the polypropylene inner lining and the thicknesses of the basalt fabric laminated covering layer and the basalt fiber polypropylene composite outer layer is 1:2~3:2~3. This utility model's polypropylene water pipe, through the addition of the basalt fabric laminated covering layer, effectively improves the strength and coefficient of thermal expansion of the polypropylene pipe, thereby alleviating problems such as leakage, pipe deformation, and poor impact resistance caused by the large coefficient of thermal expansion and low strength of polypropylene material in existing polypropylene water pipes.

[0025] The polypropylene water pipe provided by this utility model can be widely used in the installation of hot and cold water transmission pipeline systems. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the polypropylene water pipe provided in Embodiment 1 of this utility model;

[0028] Figure 2 This is a schematic diagram of the fabric film structure on the surface of the basalt fabric provided in Embodiment 1 of this utility model.

[0029] Icons: 1-Polypropylene inner lining; 2-Basalt fabric laminated covering layer; 3-Basalt fiber polypropylene composite outer layer; 21-Fabric membrane layer. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. To help to better understand this utility model, specific embodiments will now be described in detail.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0034] According to one aspect of the present invention, a polypropylene water pipe is provided, the polypropylene water pipe comprising, from the inside out, a polypropylene inner lining layer 1, a basalt fabric laminated covering layer 2, and a basalt fiber polypropylene composite outer layer 3.

[0035] The basalt fabric laminated covering layer 2 comprises n layers of basalt fabric, where n is a positive integer, and the n layers of basalt fabric laminated together constitute the basalt fabric laminated covering layer 2.

[0036] The basalt fabric has a unit area mass of 100~300g / m². 2 ;

[0037] The ratio between the thickness of the polypropylene inner lining layer 1 and the thickness of the basalt fabric laminated covering layer 2 and the basalt fiber polypropylene composite outer layer 3 is 1:2~3:2~3.

[0038] The polypropylene water pipe provided by this utility model includes, from the inside out, a polypropylene inner lining layer 1, a basalt fabric laminated covering layer 2, and a basalt fiber polypropylene composite outer layer 3. The basalt fabric laminated covering layer 2 comprises n layers of basalt fabric, where n is a positive integer, and these n layers of basalt fabric are stacked to form the basalt fabric laminated covering layer 2. The ratio between the thickness of the polypropylene inner lining layer 1 and the thicknesses of the basalt fabric laminated covering layer 2 and the basalt fiber polypropylene composite outer layer 3 is 1:2~3:2~3. The addition of the basalt fabric laminated covering layer 2 effectively improves the strength and coefficient of thermal expansion of the polypropylene pipe, thereby alleviating problems such as leakage, pipe deformation, and poor impact resistance caused by the large coefficient of thermal expansion and low strength of polypropylene materials in existing polypropylene water pipes.

[0039] In a preferred embodiment of the present invention, a fabric film layer 21 is provided on the surface of the basalt fabric, wherein the fabric film layer 21 is a high-density polyethylene (HDPE) film layer or a polypropylene (PPR) film layer.

[0040] As a preferred embodiment, the fabric film layer 21 provided on the surface of the basalt fabric of this utility model can enable the basalt fabric to be better laminated and composited, and play a certain bonding effect. At the same time, it can also effectively improve the strength of the basalt fabric laminated covering layer 2 of this utility model.

[0041] In a preferred embodiment of this utility model, the fabric film layer 21 is a high-density polyethylene film layer.

[0042] In a preferred embodiment of the present invention, the basalt fabric laminated covering layer 2 comprises 10 to 20 layers of basalt fabric, and the 10 to 20 layers of basalt fabric are laminated to form the basalt fabric laminated covering layer 2.

[0043] In a preferred embodiment of the present invention, the basalt fabric laminated covering layer 2 comprises 15 layers of basalt fabric, and the 15 layers of basalt fabric are laminated to form the basalt fabric laminated covering layer 2.

[0044] It should be noted that the thickness of the polypropylene inner lining layer 1, the basalt fabric laminated covering layer 2, and the basalt fiber polypropylene composite outer layer 3 in the polypropylene water pipe of this utility model not only have a significant impact on the strength and thermal expansion coefficient of the polypropylene pipe, but also the setting that the thickness of the basalt fabric laminated covering layer 2 and the basalt fiber polypropylene composite outer layer 3 is greater than the thickness of the polypropylene inner lining layer 1 can also improve the strength and wear resistance of the polypropylene water pipe.

[0045] Preferably, the ratio between the thickness of the polypropylene inner lining layer 1 and the thickness of the basalt fabric laminated covering layer 2 and the basalt fiber polypropylene composite outer layer 3 is 1:2:3.

[0046] In a preferred embodiment of this utility model, the basalt fiber polypropylene composite outer layer 3 of the polypropylene water pipe is a polypropylene layer reinforced with continuous basalt fibers.

[0047] The basalt continuous fiber has a single filament diameter of 6~20μm, a linear density of 10~30tex, and a single roll length of ≥30m.

[0048] As a preferred embodiment, the basalt fiber polypropylene composite outer layer 3 is a basalt polypropylene-based composite material layer. The basalt polypropylene-based composite material layer combines the advantages of high strength and good thermal stability of basalt fiber with the good mechanical properties of polypropylene, thereby obtaining a composite material with high temperature resistance and good mechanical properties.

[0049] It should be noted that the polypropylene inner lining layer 1 of this utility model comprises PPR main material, calcium carbonate, titanium dioxide, glass microspheres, and fumed silica; the basalt fabric used in the basalt fabric laminated covering layer 2 needs to be acid-washed and solvent-cleaned to ensure that the surface is free of impurities and then dried; the fabric film layer 21 set on the surface of the basalt fabric uses pure PPR material. The continuous basalt fiber used in the basalt fiber polypropylene composite outer layer 3 needs to be acid-washed and solvent-cleaned, and the auxiliary materials include calcium carbonate, titanium dioxide, glass microspheres, fumed silica, ultraviolet light absorbers, anti-aging agents, etc.

[0050] According to one aspect of the present invention, a hot and cold water delivery pipeline system is provided, the hot and cold water delivery pipeline system comprising the aforementioned polypropylene water pipe.

[0051] The polypropylene water pipe provided by this utility model can be widely used in the installation of hot and cold water transmission pipeline systems.

[0052] Example 1

[0053] Figure 1 This is a schematic diagram of the polypropylene water pipe provided in this embodiment;

[0054] Figure 2 This is a schematic diagram of the fabric film layer 21 on the surface of the basalt fabric provided in this embodiment.

[0055] in, Figure 2 Diagram A is an enlarged structural diagram of the basalt fabric of this utility model. Figure 2 In section A, the fabric film layer 21 on the surface of the basalt fabric can be clearly seen.

[0056] A polypropylene water pipe, the method for preparing the polypropylene water pipe includes the following steps:

[0057] 1. 200g / m 2The basalt fiber cloth and the continuous basalt fiber with a diameter of 12μm were soaked in 8% hydrochloric acid, washed and dried, and then soaked in xylene and dried.

[0058] 2. After heating and melting HDPE 5000S, coat the cleaned basalt fiber untwisted yarn.

[0059] After coating, a fabric film layer 21 structure is formed on the surface of the basalt fiber untwisted yarn (basalt fabric).

[0060] 3. 70 parts of amorphous polypropylene (PPR), 17 parts of 800-mesh heavy calcium carbonate, 8 parts of glass microspheres, and 5 parts of R706 titanium dioxide were premixed at 70°C and 1000 rpm for 30 minutes to obtain a mixture. After granulation, the mixture was extruded using an extruder to become the polypropylene inner liner 1.

[0061] The thickness of the polypropylene inner liner 1 is 1.0 mm.

[0062] 4. Basalt fabric layer 2 is made by rolling basalt fiber untwisted yarn coated with HDPE onto the surface of polypropylene inner lining layer 1.

[0063] The thickness of the basalt fabric laminated covering layer 2 is 0.4 mm.

[0064] 5. 61 parts of amorphous polypropylene (PPR), 17 parts of 800-mesh heavy calcium carbonate, 8 parts of glass microspheres, 5 parts of R706 titanium dioxide, 0.3 parts of BASF antioxidant Irganox 1010, 0.3 parts of UV absorber UV-531, 2 parts of polyethylene wax, 0.4 parts of calcium stearate, and 3 parts of nano-calcium carbonate were premixed at 50°C and 3 parts of decabromodiphenyl ether at 1000 rpm for 30 minutes to obtain a mixture.

[0065] 6. The premixed material and the washed continuous basalt fiber are pultruded on the surface of the basalt fabric layer 2 at a mass ratio of 3:1 to form the basalt fiber polypropylene composite outer layer 3, thus producing a polypropylene water pipe.

[0066] The thickness of the basalt fiber polypropylene composite outer layer 3 is 1.5 mm.

[0067] Example 2

[0068] A polypropylene water pipe, the method for preparing the polypropylene water pipe includes the following steps:

[0069] 1. 300g / m 2 Basalt fiber twisted yarn and continuous basalt fiber with a diameter of 15~20μm were soaked in 15% sulfuric acid, washed and dried, and then soaked in toluene and dried.

[0070] 2. After heating and melting HDPE 5000S, coat the cleaned basalt fiber twisted yarn.

[0071] After coating, a fabric film layer 21 structure is formed on the surface of the basalt fiber twisted yarn (basalt fabric).

[0072] 3. 64 parts HDPE 5000S, 15 parts 1250 mesh heavy calcium carbonate, 10 parts 1250 mesh talc, 5 parts R706 titanium dioxide, and 6 parts nano calcium carbonate were premixed at 65℃ and 900 rpm for 40 min, and then extruded using an extruder to form polypropylene inner liner layer 1.

[0073] The thickness of the polypropylene inner liner 1 is 1.0 mm.

[0074] 4. Basalt fabric layer 2 is made by rolling basalt fiber untwisted yarn coated with HDPE onto the surface of polypropylene inner lining layer 1.

[0075] The thickness of the basalt fabric laminated covering layer 2 is 0.8 mm.

[0076] 5. 54 parts PPR, 15 parts polytetrafluoroethylene F-201L, 17 parts 800-mesh heavy calcium carbonate, 5 parts 1250-mesh talc, 2 parts R706 titanium dioxide, 0.3 parts BASF antioxidant Irganox 1010, 0.3 parts UV absorber UV-531, 2 parts polyethylene wax, 0.4 parts calcium stearate, 4 parts nano calcium carbonate, and 2 parts decabromodiphenyl ether were premixed at 70℃ and 1200 rpm for 30 min to obtain a mixture.

[0077] 6. The premixed material and the cleaned continuous basalt fiber are pultruded on the surface of the basalt fabric layer 2 at a mass ratio of 4:1 to form the basalt fiber polypropylene composite outer layer 3, thus producing a polypropylene water pipe.

[0078] The thickness of the basalt fiber polypropylene composite outer layer 3 is 2.7 mm.

[0079] Example 3

[0080] A polypropylene water pipe, the method for preparing the polypropylene water pipe includes the following steps:

[0081] 1. 240g / m 2 Basalt fiber twisted yarn and continuous basalt fiber with a diameter of 12~16μm were soaked in 20% acetic acid, washed and dried, and then soaked in toluene and dried.

[0082] 2. After heating and melting PPR, coat the cleaned basalt fiber twisted yarn.

[0083] After coating, a fabric film layer 21 structure is formed on the surface of the basalt fiber twisted yarn (basalt fabric).

[0084] 3. 73 parts PPR, 10 parts 800 mesh heavy calcium carbonate, 10 parts 1250 mesh talc, 3 parts R706 titanium dioxide, and 4 parts nano calcium carbonate were premixed at 75℃ and 1000 rpm for 30 minutes, and then extruded to form polypropylene inner lining layer 1.

[0085] The thickness of the polypropylene inner liner 1 is 1.2 mm.

[0086] 4. Basalt fabric layer 2 is made by rolling basalt fiber untwisted yarn coated with PPR onto the surface of polypropylene inner lining layer 1.

[0087] The thickness of the basalt fabric laminated covering layer 2 is 0.6 mm.

[0088] 5. 48 parts PPR, 25 parts polytetrafluoroethylene L-5F, 8 parts 800-mesh heavy calcium carbonate, 8 parts 1250-mesh talc, 2 parts R706 titanium dioxide, 0.3 parts BASF antioxidant Irganox 1010, 0.3 parts UV absorber UV-531, 0.4 parts calcium stearate, 8 parts nano calcium carbonate, and 2 parts decabromodiphenyl ether were premixed at 70℃ and 1200 rpm for 30 min to obtain a mixture.

[0089] 6. The premixed material and the cleaned continuous basalt fiber are pultruded onto the surface of the basalt fabric layer 2 at a mass ratio of 2.5:1 to form the basalt fiber polypropylene composite outer layer 3, thus producing a polypropylene water pipe.

[0090] The thickness of the basalt fiber polypropylene composite outer layer 3 is 1.8 mm.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A polypropylene water pipe, characterized in that, The polypropylene water pipe includes a polypropylene inner lining (1), a basalt fabric laminated covering layer (2), and a basalt fiber polypropylene composite outer layer (3) arranged sequentially from the inside to the outside. The basalt fabric laminated covering layer (2) includes n layers of basalt fabric, where n is a positive integer, and the n layers of basalt fabric laminated together constitute the basalt fabric laminated covering layer (2). The ratio between the thickness of the polypropylene inner lining (1) and the thickness of the basalt fabric laminated covering layer (2) and the basalt fiber polypropylene composite outer layer (3) is 1:2~3:2~3.

2. The polypropylene water pipe according to claim 1, characterized in that, The basalt fabric surface is provided with a fabric film layer (21), which is a high-density polyethylene film layer or a polypropylene film layer.

3. The polypropylene water pipe according to claim 2, characterized in that, The fabric film layer (21) is a high-density polyethylene film layer.

4. The polypropylene water pipe according to claim 1, characterized in that, The basalt fabric laminated covering layer (2) includes 10 to 20 layers of basalt fabric, and the 10 to 20 layers of basalt fabric laminated together constitute the basalt fabric laminated covering layer (2).

5. The polypropylene water pipe according to claim 1, characterized in that, The basalt fabric laminated covering layer (2) comprises 15 layers of basalt fabric, which are stacked to form the basalt fabric laminated covering layer (2).

6. The polypropylene water pipe according to claim 1, characterized in that, The ratio between the thickness of the polypropylene inner lining (1) and the thickness of the basalt fabric laminated covering layer (2) and the basalt fiber polypropylene composite outer layer (3) is 1:2:

3.

7. The polypropylene water pipe according to claim 1, characterized in that, The basalt fiber polypropylene composite outer layer (3) of the polypropylene water pipe is a polypropylene layer reinforced with continuous basalt fibers. The basalt continuous fiber has a single filament diameter of 6~20μm, a linear density of 10~30tex, and a single roll length of ≥30m.

8. A hot and cold water delivery pipeline system, characterized in that, The hot and cold water delivery pipeline system includes the polypropylene water pipes as described in any one of claims 1 to 7.

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