Environment-friendly degradable green belt water supply pipeline and preparation method thereof

Abstract

The invention discloses an environment-friendly degradable green belt water supply pipeline and a preparation method thereof, relates to the technical field of water supply pipeline preparation, and solves the technical problems that an existing water supply pipeline has weak protection performance and limited noise reduction capacity, the durability of the pipeline in a complex environment is affected, and the expected service life of the pipeline is shortened. Comprising a pipeline body, and the pipeline body comprises an outer pipe body, an inner pipe body and a plurality of bonding layers; the protective assembly wraps the outer pipe body, the protective assembly comprises a metal sheet reinforcing layer, a noise reduction layer and a protective coating layer, and the noise reduction layer is wrapped with the metal sheet reinforcing layer; a buffer layer and a heat insulation layer are arranged between the outer pipe body and the inner pipe body; the ceramic lining is arranged on the inner wall surface of the inner pipe body, and the inner wall surface of the inner pipe body is uniformly coated with an adhesive; the pipeline has high protection performance and noise reduction capacity, the durability of the pipeline in a complex environment is improved, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of water supply pipelines, and in particular relates to an environmentally friendly degradable green belt water supply pipeline and a preparation method thereof. Background Art

[0002] With the continuous improvement of environmental awareness and the continuous advancement of technology, the application scope of environmentally friendly degradable water supply pipes will become more and more extensive. Environmentally friendly degradable green belt water supply pipes are mainly made of non-toxic, harmless and degradable materials, such as certain special types of polyethylene (PE) (such as bio-based PE) or other biodegradable materials. Pipes made of this material have strong environmental performance, strong corrosion resistance and pollution resistance, safety and reliability, and economical and practical characteristics. They are widely used in urban water supply, rural water supply, landscaping and other fields. In landscaping, they are used to provide stable and safe water supply services for green belts while reducing negative impacts on the environment.

[0003] At present, the inventors have found that although polyvinyl chloride (PVC) pipe products can be widely adapted to various application requirements with their diverse performance advantages, their relatively weak protection performance and limited noise reduction ability have become key factors restricting their overall performance and stability. This deficiency not only affects the durability of the pipe in complex environments, but also shortens its expected service life.

[0004] Therefore, based on the above problems, we designed an environmentally friendly degradable green belt water supply pipeline and a preparation method thereof. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an environmentally friendly degradable green belt water supply pipeline and a preparation method thereof, which solves the technical problems that the existing water supply pipelines have weak protection performance and limited noise reduction capabilities, which affect the durability of the pipelines in complex environments and shorten their expected service life.

[0006] To achieve the above-mentioned object, an environmentally friendly degradable green belt water supply pipeline is provided according to an embodiment of a first aspect of the present invention, comprising a pipeline body, wherein the pipeline body comprises an outer pipe body, an inner pipe body and a plurality of adhesive layers;

[0007] Also includes:

[0008] A protective component wrapped on the outer tube body, the protective component comprising a metal sheet reinforcement layer, a noise reduction layer and a protective coating layer, the metal sheet reinforcement layer wrapped on the outside of the noise reduction layer;

[0009] A buffer layer and a heat insulation layer are provided between the outer tube body and the inner tube body;

[0010] The ceramic lining is arranged on the inner wall surface of the inner tube body. The inner wall surface of the inner tube body is evenly coated with adhesive, and the ceramic lining is adhered to the inner wall of the inner tube body through the adhesive.

[0011] A further improvement is that the outer tube body and the inner tube body are made of bio-based polyvinyl chloride material.

[0012] A further improvement is that the noise reduction buffer layer is filled with a sound-absorbing material, and the sound-absorbing material is one of polyester fiber cotton, polyurethane foam and glass fiber cotton.

[0013] A further improvement is that the inner wall surface of the noise reduction layer is coated with a layer of sound insulation paint, and the noise reduction layer is wrapped and adhered to the outside of the outer tube body by an adhesive layer.

[0014] A further improvement is that the material of the buffer layer is one of butyl rubber, synthetic rubber, chloroprene rubber and natural rubber.

[0015] A further improvement is that the thermal insulation material of the thermal insulation layer is one of polyester fiber cotton, foam cement board, polystyrene foam board and aluminum silicate thermal insulation material.

[0016] A further improvement is that the protective component also includes a protective coating layer, and the protective coating layer includes an anti-oxidation coating layer, an anti-weathering coating layer and a corrosion-resistant coating layer from the inside to the outside.

[0017] A further improvement is that the metal sheet reinforcement layer is adhered to the outside of the noise reduction layer by an adhesive layer.

[0018] A method for preparing an environmentally friendly degradable green belt water supply pipeline comprises the following steps:

[0019] Step 1: Prepare Mixture A

[0020] Specifically, bio-based polyvinyl chloride, vitamin E, hydrogenated castor oil, sodium alkyl sulfonate, polybutylene succinate, epoxy resin, nano silicon nitride and silane coupling agent are added into a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 60 to 110° C. to prepare a mixture A;

[0021] Step 2: Prepare Mixture B

[0022] Specifically, acrylonitrile-butadiene-styrene copolymer, ultraviolet absorber, glass fiber, high-density polyvinyl chloride and low-density polyvinyl chloride are added into a high-speed mixer and stirred for 10 to 20 minutes, the speed is adjusted to 2000 to 5000 rpm, and the temperature is controlled to 80 to 120° C. to obtain a mixture B;

[0023] Step 3: Prepare environmentally friendly PVC pipes

[0024] Specifically, the mixed material A in step 1 and the mixed material B in step 2 are put into a twin-screw extruder at a temperature of 180-210° C. and a screw speed of 200-400 rpm for extrusion granulation, and then the obtained granulated material is added to an extrusion molding machine, and the environmentally friendly polyvinyl chloride pipe is obtained after sizing, pulling, cooling and cutting;

[0025] Step 4: Install the ceramic lining

[0026] Specifically: evenly apply adhesive on the inner wall of the inner tube body, adhere the ceramic lining to the inner wall of the inner tube body through the adhesive, and apply sealant at the connection gap and around the fixed points for sealing. After bonding, the ceramic lining is cured.

[0027] Step 5: Prepare the outer sheath

[0028] S1: First, polyamide, butyl rubber, high-density polyvinyl chloride, nylon, polyester fiber cotton, silica gel and glass fiber are added to a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 80 to 110°C, and then added to an extruder, and the outer sheath is obtained after sizing, pulling, cooling and cutting;

[0029] S2: The polyester fiber cotton is poured on the outer sheath tube through a pouring process to be cooled and formed, and then a metal sheet reinforcement layer is put on the outside of the formed outer sheath tube, and sealant is applied around the connection gap and the fixing point for sealing;

[0030] S3: The surface of the jacket tube is treated by corona polarization treatment, and then the protective coating layer is evenly sprayed on the outer jacket tube back and forth, and then moved to a curing furnace to stand and rotate at 90-150°C for 3-8 hours for curing.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention arranges a metal sheet reinforcement layer outside the pipeline, and utilizes the arranged metal sheet reinforcement layer to improve the structural strength of the pipeline, thereby reducing the probability of bending of the pipeline due to accidents; and utilizes the effect of the arranged protective coating layer to enhance the anti-oxidation, weathering and corrosion resistance of the pipeline, thereby further extending the service life of the pipeline;

[0033] The present invention provides a buffer layer between the outer tube body and the inner tube body. The buffer layer can be used in conjunction with the noise reduction layer. While achieving efficient noise reduction capability of the pipeline, the pipeline has good characteristics of absorbing vibration and impact energy, thereby avoiding damage due to excessive pressure, thereby extending the service life of the pipeline; the heat insulation layer is provided for heat insulation in cold winter climate conditions, avoiding freezing of the water supply pipeline due to low temperature;

[0034] The present invention arranges a ceramic lining on the inner wall surface of the inner pipe body, so that the ceramic lining can form a ceramic coating on the inner wall of the pipe, thereby improving corrosion resistance and providing a smooth surface, which is beneficial to the water supply of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0036] Markings in the figure:

[0037] 1. Pipeline body; 11. Outer pipe body; 12. Inner pipe body; 13. Adhesive layer; 2. Protective component; 21. Metal sheet reinforcement layer; 22. Noise reduction layer; 221. Sound insulation coating; 22. Noise reduction layer; 23. Thermal insulation layer; 24. Protective coating layer; 3. Ceramic lining; 4. Buffer layer. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, an environmentally friendly degradable green belt water supply pipeline includes a pipeline body 1, the pipeline body 1 includes an outer pipe body 11, an inner pipe body 12 and a plurality of adhesive layers 13, and the outer pipe body 11 and the inner pipe body 12 are made of bio-based polyvinyl chloride material;

[0040] like Figure 1 As shown, the implementation includes: a protective component 2, which is wrapped on the outer tube body 11, and the protective component 2 includes a metal sheet reinforcement layer 21, a noise reduction layer 22 and a protective coating layer 24, and the metal sheet reinforcement layer 21 is wrapped on the outside of the noise reduction layer 11;

[0041] Specifically, the metal sheet reinforcement layer 21 is adhered to the outside of the noise reduction layer 11 through the adhesive layer 13, and the metal sheet reinforcement layer is used to improve the structural strength of the pipeline and reduce the probability of bending of the pipeline due to accidents;

[0042] Specifically, the protective coating layer 24 includes an anti-oxidation coating layer 241, an anti-weathering coating layer 242, and a corrosion-resistant coating layer 243. The protective coating layer 24 can enhance the anti-oxidation, weathering and corrosion resistance of the pipeline, thereby further extending the service life of the pipeline.

[0043] Specifically, the noise reduction buffer layer 22 is filled with a sound-absorbing material, which is one of polyester fiber cotton, polyurethane foam and glass fiber cotton. The inner wall surface of the noise reduction layer 22 is coated with a layer of sound insulation coating 221. The noise reduction layer 22 is wrapped and adhered to the outside of the outer tube body 11 through the adhesive layer 13 to absorb the noise generated during water supply.

[0044] like Figure 1 As shown, during implementation, a buffer layer 4 and a heat insulation layer 23 are additionally provided between the outer tube body 11 and the inner tube body 12;

[0045] Specifically, the buffer layer 4 is made of one of butyl rubber, synthetic rubber, chloroprene rubber and natural rubber, and is used in conjunction with the noise reduction layer 22 to achieve efficient noise reduction of the pipeline while allowing the pipeline to have good vibration and impact energy absorption properties, thereby avoiding damage due to excessive pressure, thereby extending the service life of the pipeline;

[0046] Specifically, the insulation material of the heat insulation layer 23 is one of polyester fiber cotton, foam cement board, polystyrene foam board and aluminum silicate insulation material, which is used for heat insulation in cold winter climate conditions to prevent the water supply pipe from freezing due to low temperature;

[0047] like Figure 1 As shown, the implementation also includes: a ceramic lining 3, which is arranged on the inner wall surface of the inner tube body 12, and the inner wall surface of the inner tube body 12 is evenly coated with an adhesive, and the ceramic lining 3 is adhered to the inner wall of the inner tube body 12 by the adhesive, so that the ceramic lining 3 forms a layer of ceramic coating on the inner wall of the pipeline, which improves the corrosion resistance and has a smooth surface, which is conducive to the water supply of the pipeline;

[0048] like Figure 1 As shown, in this embodiment, it should be noted that the application document only improves the shortcomings of the existing water supply pipeline, which has weak protection performance and limited noise reduction ability, affecting the durability of the pipeline in a complex environment and shortening its expected service life, and does not involve other aspects; the following is an introduction to the preparation method of an environmentally friendly and degradable green belt water supply pipeline:

[0049] A method for preparing an environmentally friendly degradable green belt water supply pipeline comprises the following steps:

[0050] Step 1: Prepare Mixture A

[0051] Specifically, bio-based polyvinyl chloride, vitamin E, hydrogenated castor oil, sodium alkyl sulfonate, polybutylene succinate, epoxy resin, nano silicon nitride and silane coupling agent are added into a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 60 to 110° C. to prepare a mixture A;

[0052] Step 2: Prepare Mixture B

[0053] Specifically, acrylonitrile-butadiene-styrene copolymer, ultraviolet absorber, glass fiber, high-density polyvinyl chloride and low-density polyvinyl chloride are added into a high-speed mixer and stirred for 10 to 20 minutes, the speed is adjusted to 2000 to 5000 rpm, and the temperature is controlled to 80 to 120° C. to obtain a mixture B;

[0054] Step 3: Prepare environmentally friendly PVC pipes

[0055] Specifically, the mixed material A in step 1 and the mixed material B in step 2 are put into a twin-screw extruder at a temperature of 180-210° C. and a screw speed of 200-400 rpm for extrusion granulation, and then the obtained granulated material is added to an extrusion molding machine, and the environmentally friendly polyvinyl chloride pipe is obtained after sizing, pulling, cooling and cutting;

[0056] Step 4: Install the ceramic lining

[0057] Specifically: evenly apply adhesive on the inner wall surface of the inner tube body 12, adhere the ceramic lining 3 to the inner wall of the inner tube body 12 through the adhesive, and apply a proper amount of sealant at the connection gap and around the fixed points for sealing. After bonding, the ceramic lining 3 is cured to make the inner wall of the water supply pipe resistant to acid and alkali and smooth, with high bonding strength and stable after curing, ensuring the long-term stable operation and service life of the drainage pipe.

[0058] Step 5: Prepare the outer sheath

[0059] S1: First, polyamide, butyl rubber, high-density polyvinyl chloride, nylon, polyester fiber cotton, silica gel and glass fiber are added to a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 80 to 110°C, and then added to an extruder, and the outer sheath is obtained after sizing, pulling, cooling and cutting;

[0060] S2: The polyurethane foam is then poured onto the outer jacket tube through a pouring process for cooling and forming. A metal sheet reinforcement layer is then placed on the outer surface of the formed outer jacket tube, and an appropriate amount of sealant is applied to the connection gaps and around the fixing points for sealing. During the pouring process, the ratio of the polyurethane raw materials, temperature, time and other parameters need to be controlled to ensure the uniformity and density of the insulation layer;

[0061] S2: The surface of the sheath tube is treated by corona polarization treatment. The corona treatment can make the surface of the outer sheath tube rough and increase the number of polar groups, thereby improving the bonding strength. The protective coating layer is then sprayed evenly and reciprocatingly on the outer sheath tube, and moved to a curing furnace to stand and rotate at 90-150°C for 3-8 hours to form a protective layer.

[0062] The following tests are conducted based on the water pressure strength test of GB50242-2002 water supply pipeline, GB3096-1993 "Urban Area Environmental Noise Standard" and GB / T8163-2008 seamless steel pipe for fluid transportation, and the following experimental results are obtained:

[0063]

[0064] In summary, the present invention manufactures the water supply pipe by utilizing the above-mentioned preparation method, so that the pipe has stronger protection performance and noise reduction ability, the pipe is more durable and stable in complex environments, has a wider range of applications, and is beneficial to the water supply of the pipe.

[0065] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An environmentally friendly and degradable green belt water supply pipeline, comprising a pipeline body (1), wherein the pipeline body (1) comprises an outer pipe body (11), an inner pipe body (12) and a plurality of adhesive layers (13); It is characterized in that Also includes: A protective component (2) is wrapped around the outer tube body (11), the protective component (2) comprising a metal sheet reinforcement layer (21), a noise reduction layer (22) and a protective coating layer (24), the metal sheet reinforcement layer (21) being wrapped around the outside of the noise reduction layer (22); A buffer layer (4) and a heat insulation layer (23) are provided between the outer tube body (11) and the inner tube body (12); The ceramic lining (3) is arranged on the inner wall surface of the inner tube body (12); the inner wall surface of the inner tube body (12) is evenly coated with adhesive, and the ceramic lining (3) is adhered to the inner wall of the inner tube body (12) by the adhesive.

2. The environmentally friendly degradable green belt water supply pipeline according to claim 1 is characterized in that: The outer tube body (11) and the inner tube body (12) are made of bio-based polyvinyl chloride material.

3. The environmentally friendly degradable green belt water supply pipeline according to claim 1 is characterized in that: The noise reduction buffer layer (22) is filled with a sound absorbing material, and the sound absorbing material is one of polyester fiber cotton, polyurethane foam and glass fiber cotton.

4. The environmentally friendly degradable green belt water supply pipeline according to claim 1, characterized in that: The inner wall surface of the noise reduction layer (22) is coated with a layer of sound insulation paint (221), and the noise reduction layer (22) is wrapped and adhered to the outside of the outer tube body (11) through an adhesive layer (13).

5. The environmentally friendly degradable green belt water supply pipeline according to claim 1, characterized in that: The material of the buffer layer (4) is one of butyl rubber, synthetic rubber, chloroprene rubber and natural rubber.

6. The environmentally friendly degradable green belt water supply pipeline according to claim 1, characterized in that: The heat insulating material of the heat insulating layer (23) is one of polyester fiber cotton, foam cement board, polystyrene foam board and aluminum silicate heat insulating material.

7. The environmentally friendly degradable green belt water supply pipeline according to claim 1, characterized in that: The protective component (2) further comprises a protective coating layer (24), wherein the protective coating layer (24) comprises, from inside to outside, an anti-oxidation coating layer (241), an anti-weathering coating layer (242), and a corrosion-resistant coating layer (243).

8. The environmentally friendly degradable green belt water supply pipeline according to claim 1, characterized in that: The metal sheet reinforcement layer (21) is adhered to the outside of the noise reduction layer (11) via an adhesive layer (13).

9. A method for preparing an environmentally friendly degradable green belt water supply pipeline according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Prepare Mixture A Specifically, bio-based polyvinyl chloride, vitamin E, hydrogenated castor oil, sodium alkyl sulfonate, polybutylene succinate, epoxy resin, nano silicon nitride and silane coupling agent are added into a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 60 to 110° C. to prepare a mixture A; Step 2: Prepare Mixture B Specifically, acrylonitrile-butadiene-styrene copolymer, ultraviolet absorber, glass fiber, high-density polyvinyl chloride and low-density polyvinyl chloride are added into a high-speed mixer and stirred for 10 to 20 minutes, the speed is adjusted to 2000 to 5000 rpm, and the temperature is controlled to 80 to 120° C. to obtain a mixture B; Step 3: Prepare environmentally friendly PVC pipes Specifically, the mixed material A in step 1 and the mixed material B in step 2 are put into a twin-screw extruder at a temperature of 180-210° C. and a screw speed of 200-400 rpm for extrusion granulation, and then the obtained granulated material is added to an extrusion molding machine, and the environmentally friendly polyvinyl chloride pipe is obtained after sizing, pulling, cooling and cutting; Step 4: Install the ceramic lining Specifically, adhesive is evenly applied to the inner wall surface of the inner tube body (12), the ceramic lining (3) is bonded to the inner wall of the inner tube body (12) by the adhesive, and sealant is applied to the connection gap and around the fixing point for sealing, and the ceramic lining (3) is cured after bonding. Step 5: Prepare the outer sheath S1: First, polyamide, butyl rubber, high-density polyvinyl chloride, nylon, polyester fiber cotton, silica gel and glass fiber are added to a high-speed mixer and stirred for 10 to 20 minutes, and the temperature is controlled at 80 to 110°C, and then added to an extruder, and the outer sheath is obtained after sizing, pulling, cooling and cutting; S2: The polyester fiber cotton is poured onto the outer sheath tube by a pouring process and cooled to form, and then a metal sheet reinforcement layer (21) is placed on the outer surface of the formed outer sheath tube, and a sealant is applied at the connection gap and around the fixing point for sealing; S3: The outer sheath tube is surface treated by corona polarization treatment, and then the protective coating layer (25) is evenly sprayed on the outer sheath tube in a reciprocating manner, and then moved to a curing furnace to stand and rotate at 90-150° C. for curing for 3-8 hours.

Images