CN112049991A - High-pressure plastic pipeline and preparation method thereof - Google Patents
High-pressure plastic pipeline and preparation method thereof Download PDFInfo
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- CN112049991A CN112049991A CN202010878791.3A CN202010878791A CN112049991A CN 112049991 A CN112049991 A CN 112049991A CN 202010878791 A CN202010878791 A CN 202010878791A CN 112049991 A CN112049991 A CN 112049991A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a high-pressure plastic pipeline and a preparation method thereof. The high-pressure plastic pipeline comprises a core layer, a reinforcing layer, a photocuring glue layer and an outer shell layer which are sequentially connected from inside to outside, wherein the core layer is suitable for the acid washing of petrochemical industry, electronics and electrical industry and steel mills and the conveying of acid and alkali liquor, has good chemical corrosion resistance, aging resistance, long service life, smooth inner surface and non-adhesive characteristic, and is beneficial to the conveying of liquid. The enhancement layer plays the effect of strengthening and protection sandwich layer, and when carrying high-pressure liquid, the inside high pressure of sandwich layer disperses on the enhancement layer, has promoted the holistic anti stress performance of pipeline. The light-cured adhesive layer plays a role in strengthening again, and one or more layers of light-cured adhesive layers can be coated according to needs, so that the bearing capacity and the tear resistance of the pipeline are greatly improved. The outer shell layer plays a role in protecting the photocuring glue layer, the reinforcing layer and the core layer.
Description
Technical Field
The invention belongs to the technical field of plastic pipes, and particularly relates to a high-pressure plastic pipe and a preparation method thereof.
Background
PVDF (Polyvinylidene Fluoride, PVDF for short) material has the advantages of tight arrangement of molecular chains, strong hydrogen bonds, oxygen index of 46%, weather and flame resistance, crystallinity of 65-78%, and density of 1.75-1.78 g/cm3The long-term use temperature is-10 to 110 ℃. Its outstanding features are high mechanical strength and high radiation resistance. Has good chemical stability and is not corroded by acid, alkali, strong oxidant and halogen at room temperature. The pipe prepared by PVDF is widely applied to the acid washing and the conveying of acid and alkali liquor in petrochemical industry, electronics and electrical industry and steel mills.
A good pipeline not only has good economical efficiency, but also has the characteristics of stable and reliable interface, impact resistance, cracking resistance, aging resistance, corrosion resistance and the like. Compared with the traditional pipe, the PVDF pipe has the following advantages: (1) the connection is reliable: the pipeline systems are connected in an electric hot melting mode, and the strength of the joint is higher than that of the pipeline body; (2) good low-temperature impact resistance: the low-temperature embrittlement temperature is extremely low, and the low-temperature thermal-insulation material can be safely used within the temperature range of-60 ℃ to 60 ℃. During winter construction, the pipe cannot be brittle due to good impact resistance of the material; (3) good stress cracking resistance: PVDF has low notch sensitivity, high shear strength and excellent scratch resistance, and the environmental stress cracking resistance is also very outstanding; (4) good chemical resistance: the PVDF pipeline can resist corrosion of various chemical media, and chemical substances existing in soil can not cause any degradation effect on the pipeline. Therefore, the phenomena of corrosion, rusting or electrochemical corrosion can not occur; it also does not promote algae, bacteria or fungi growth; (5) aging resistance and long service life: the pipeline containing 2-2.5% of uniformly distributed carbon black can be stored or used outdoors in the open air, and cannot be damaged by ultraviolet radiation; (6) the wear resistance is good: the abrasion resistance comparison test of the PVDF pipeline and the steel pipe shows that the abrasion resistance of the PVDF pipeline is 4 times that of the steel pipe; (7) the flexibility is good: the flexibility of the PVDF pipeline enables the PVDF pipeline to be easily bent, and can bypass obstacles in a way of changing the direction of the pipeline in engineering, so that the use amount of pipe fittings can be reduced and the installation cost can be reduced in many occasions due to the flexibility of the pipeline; (8) the water flow resistance is small: the PVDF clean pipe has a smooth interior surface. The smooth performance and the non-adhesion property ensure that the PVDF pipe has higher conveying capacity than the traditional pipe, and simultaneously, the pressure loss and the water conveying energy consumption of the pipeline are also reduced; (9) the carrying is convenient: PVDF pipelines are lighter than concrete pipelines, galvanized pipes and steel pipes, are easier to handle and install, have lower manpower and equipment requirements, and represent a significant reduction in the installation costs of the project.
Although the PVDF pipeline has the advantages, the pressure bearing capacity of the existing PVDF pipeline is low, and the PVDF pipeline is not suitable for conveying high-pressure liquid.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems in the prior art. Therefore, the invention provides a high-pressure plastic pipeline.
The invention also provides a preparation method of the high-pressure molding rubber pipe.
The invention provides a high-pressure plastic pipeline which comprises a core layer, a reinforcing layer, a photocuring glue layer and an outer shell layer which are sequentially connected from inside to outside.
According to an embodiment of the present invention, the material of the core layer is PDVF.
The PDVF has high mechanical strength, good radiation resistance and good chemical stability, and is not corroded by acid, alkali, strong oxidant and halogen at room temperature.
According to an embodiment of the present invention, the material of the reinforcement layer is polyethylene.
According to one embodiment of the present invention, the reinforcing layer contains carbon fiber filaments having a diameter of 10 to 20 μm.
According to one embodiment of the present invention, the thickness of the reinforcing layer is 0.5 to 1 mm.
The reinforcing layer contains carbon fiber filaments with the diameter of 10-20 mu m, so that the strength of the reinforcing layer is improved, and the reinforcing layer can bear more pressure dispersed from the core layer.
The reinforced layer and the core layer are in interference fit, and the reinforced layer can bear the pressure from the core layer before deformation occurs after the core layer bears the pressure by the aid of the interference fit design, so that the pressure resistance of the pipeline is improved.
According to one embodiment of the present invention, the photo-curing adhesive layer includes a first photo-curing adhesive layer, a second photo-curing adhesive layer and a third photo-curing adhesive layer, which are sequentially disposed.
The light-cured adhesive layer plays a role in strengthening again, and one or more layers of light-cured adhesive layers can be coated according to needs, so that the bearing capacity and the tear resistance of the pipeline are greatly improved.
According to one embodiment of the invention, the photo-curing glue layer comprises the following preparation raw materials in parts by weight:
polyether urethane acrylate: 25 to 30 parts of a water-soluble polymer,
hydrogen-containing silicone oil: 1 to 3 parts of (A) a water-soluble polymer,
nano carbon fiber: 3-5 parts of (A) a water-soluble polymer,
polyaniline: 5 to 10 parts by weight of a surfactant,
isobornyl methacrylate: 10-15 parts of (a) a water-soluble polymer,
decabromodiphenyl ether: 1 to 5 parts by weight of a stabilizer,
auxiliary agent: 5-10 parts.
According to one embodiment of the invention, the adjuvant is a mixture of lauryl acrylate, stearyl methacrylate and isobornyl acrylate.
According to an embodiment of the present invention, the material of the outer shell layer is nylon.
The second aspect of the present invention provides a method for preparing the above high pressure molding compound pipe, comprising the steps of:
s1: extruding by adopting a multi-layer co-extrusion process to obtain a core layer and a reinforcing layer sleeved outside the core layer;
s2: coating a light-cured adhesive on the surface of the reinforcing layer to form a light-cured adhesive layer;
s3: and extruding nylon to obtain a nylon layer, and sleeving the nylon layer on the surface of the photocuring glue layer to obtain the high-compression-molding glue pipeline.
The high-pressure plastic pipeline of the invention at least has the following technical effects:
the high-pressure plastic pipeline comprises a core layer, a reinforcing layer, a photocuring glue layer and an outer shell layer which are sequentially connected from inside to outside, wherein the core layer is suitable for the acid washing of petrochemical industry, electronics and electrical industry and steel mills and the conveying of acid and alkali liquor, has good chemical corrosion resistance, aging resistance, long service life, smooth inner surface and non-adhesive characteristic, and is beneficial to the conveying of liquid. The enhancement layer plays the effect of strengthening and protection sandwich layer, and when carrying high-pressure liquid, the inside high pressure of sandwich layer disperses on the enhancement layer, has promoted the holistic anti stress performance of pipeline. The light-cured adhesive layer plays a role in strengthening again, and one or more layers of light-cured adhesive layers can be coated according to needs, so that the bearing capacity and the tear resistance of the pipeline are greatly improved. The outer shell layer plays a role in protecting the photocuring glue layer, the reinforcing layer and the core layer.
The high-pressure molding rubber pipeline is reliable in connection, the pipeline systems can be connected in an electrothermal fusion mode, and the strength of the joint is higher than that of the pipeline body.
Drawings
FIG. 1 is a schematic structural view of a high pressure molded plastic tubing of an embodiment of the present invention.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention will be further described with reference to the examples, but the present invention is not limited to the examples.
Example 1
The present example provides a method of high compression molding a plastic tubing comprising the steps of:
s1: extruding by adopting a multi-layer co-extrusion process to obtain a core layer and a reinforcing layer sleeved outside the core layer;
s2: coating a light-cured adhesive on the surface of the reinforcing layer to form a light-cured adhesive layer;
s3: and extruding nylon to obtain a nylon layer, and sleeving the nylon layer on the surface of the photocuring glue layer to obtain the high-compression-molding glue pipeline.
Example 2
In this example, a high pressure plastic pipe was prepared by the method of example 1, and as shown in fig. 1, the pipe includes a core layer 100, a reinforcing layer 200, a photocurable glue layer 300, and an outer shell layer 400, which are sequentially connected from the inside to the outside, and the pipe has an outer diameter of 5 cm.
The material of the core layer 100 is PDVF. The material of the reinforcing layer 200 is polyethylene. The reinforcing layer 200 contains carbon fiber filaments having a diameter of 15 μm. The thickness of the reinforcing layer 200 was 0.5 mm. The reinforcing layer 200 is an interference fit with the core layer 100. The photo-curable adhesive layer 300 is a single layer. The outer shell 400 is made of nylon.
The light-cured adhesive layer 300 comprises the following preparation raw materials in parts by weight:
polyether urethane acrylate: 25 parts of hydrogen-containing silicone oil: 1 part, nano carbon fiber: 3 parts of polyaniline: 5 parts, isobornyl methacrylate: 10 parts, decabromodiphenyl ether: 1 part, auxiliary agent: 5 parts of the raw materials. The auxiliary agent is the mixture of lauryl acrylate, octadecyl methacrylate and isobornyl acrylate.
Example 3
In this example, the preparation method of example 1 was used to prepare a high pressure plastic pipe, which comprises a core layer 100, a reinforcing layer 200, a photocurable adhesive layer 300, and an outer shell layer 400, which are connected in sequence from the inside to the outside, and the outer diameter of the pipe was 5 cm.
The material of the core layer 100 is PDVF. The material of the reinforcing layer 200 is polyethylene. The reinforcing layer 200 contains carbon fiber filaments having a diameter of 15 μm. The thickness of the reinforcing layer 200 was 0.5 mm. The reinforcing layer 200 is an interference fit with the core layer 100. The photo-curing adhesive layer 300 is a double layer. The outer shell 400 is made of nylon.
The light-cured adhesive layer 300 comprises the following preparation raw materials in parts by weight:
polyether urethane acrylate: 25 parts of hydrogen-containing silicone oil: 1 part, nano carbon fiber: 3 parts of polyaniline: 5 parts, isobornyl methacrylate: 10 parts, decabromodiphenyl ether: 1 part, auxiliary agent: 5 parts of the raw materials. The auxiliary agent is the mixture of lauryl acrylate, octadecyl methacrylate and isobornyl acrylate.
Example 4
In this example, the preparation method of example 1 was used to prepare a high pressure plastic pipe, which comprises a core layer 100, a reinforcing layer 200, a photocurable adhesive layer 300, and an outer shell layer 400, which are connected in sequence from the inside to the outside, and the outer diameter of the pipe was 5 cm.
The material of the core layer 100 is PDVF. The material of the reinforcing layer 200 is polyethylene. The reinforcing layer 200 contains carbon fiber filaments having a diameter of 15 μm. The thickness of the reinforcing layer 200 was 0.5 mm. The reinforcing layer 200 is an interference fit with the core layer 100. The photo-curing adhesive layer 300 is a three-layer structure formed by sequentially coating. The outer shell 400 is made of nylon.
The light-cured adhesive layer 300 comprises the following preparation raw materials in parts by weight:
polyether urethane acrylate: 25 parts of hydrogen-containing silicone oil: 1 part, nano carbon fiber: 3 parts of polyaniline: 5 parts, isobornyl methacrylate: 10 parts, decabromodiphenyl ether: 1 part, auxiliary agent: 5 parts of the raw materials. The auxiliary agent is the mixture of lauryl acrylate, octadecyl methacrylate and isobornyl acrylate.
Example 5
In this example, the preparation method of example 1 was used to prepare a high pressure plastic pipe, which comprises a core layer 100, a reinforcing layer 200, a photocurable adhesive layer 300, and an outer shell layer 400, which are connected in sequence from the inside to the outside, and the outer diameter of the pipe was 5 cm.
The material of the core layer 100 is PDVF. The material of the reinforcing layer 200 is polyethylene. The reinforcing layer 200 contains carbon fiber filaments having a diameter of 15 μm. The thickness of the reinforcing layer 200 was 0.5 mm. The reinforcement layer 200 is directly fitted over the core layer 100 without interference. The photo-curable adhesive layer 300 is a single layer. The outer shell 400 is made of nylon.
The light-cured adhesive layer 300 comprises the following preparation raw materials in parts by weight:
polyether urethane acrylate: 25 parts of hydrogen-containing silicone oil: 1 part, nano carbon fiber: 3 parts of polyaniline: 5 parts, isobornyl methacrylate: 10 parts, decabromodiphenyl ether: 1 part, auxiliary agent: 5 parts of the raw materials. The auxiliary agent is the mixture of lauryl acrylate, octadecyl methacrylate and isobornyl acrylate.
Example 6
In this example, the method of example 1 was used to prepare a high pressure plastic pipe comprising a core layer 100, a reinforcing layer 200 and an outer shell layer 400 connected in this order from the inside to the outside, and the pipe had an outer diameter of 5 cm.
The material of the core layer 100 is PDVF. The material of the reinforcing layer 200 is polyethylene. The reinforcing layer 200 contains carbon fiber filaments having a diameter of 15 μm. The thickness of the reinforcing layer 200 was 0.5 mm. The reinforcing layer 200 is an interference fit with the core layer 100. The outer shell 400 is made of nylon.
Example of detection
In this example, the pressure resistance of five plastic pipes prepared in examples 2 to 6 was measured, and the results are shown in table 1.
TABLE 1
| Pipeline numbering | Withstand voltage value |
| Example 2 | 12kgf/cm2 |
| Example 3 | 14kgf/cm2 |
| Example 4 | 15.5kgf/cm2 |
| Example 5 | 10.5kgf/cm2 |
| Example 6 | 10kgf/cm2 |
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The high-pressure plastic pipeline is characterized by comprising a core layer, a reinforcing layer, a photocuring glue layer and an outer shell layer which are sequentially connected from inside to outside.
2. The high pressure plastic pipe of claim 1, wherein the core layer is PDVF.
3. The piping of claim 1, wherein the reinforcing layer comprises polyethylene.
4. The high pressure plastic pipe of claim 3, wherein the reinforcing layer comprises carbon fiber filaments having a diameter of 10 to 20 μm.
5. The high pressure plastic pipe of claim 1, wherein the reinforcing layer has a thickness of 0.5 to 1 mm.
6. The high pressure plastic pipe of claim 1, wherein the light-cured adhesive layer comprises a first light-cured adhesive layer, a second light-cured adhesive layer and a third light-cured adhesive layer sequentially disposed.
7. The high pressure plastic pipe according to claim 1 or 6, wherein the light-cured adhesive layer comprises the following raw materials in parts by weight:
polyether urethane acrylate: 25 to 30 parts of a water-soluble polymer,
hydrogen-containing silicone oil: 1 to 3 parts of (A) a water-soluble polymer,
nano carbon fiber: 3-5 parts of (A) a water-soluble polymer,
polyaniline: 5 to 10 parts by weight of a surfactant,
isobornyl methacrylate: 10-15 parts of (a) a water-soluble polymer,
decabromodiphenyl ether: 1 to 5 parts by weight of a stabilizer,
auxiliary agent: 5-10 parts.
8. The high pressure plastic pipe of claim 7, wherein the auxiliary agent is a mixture of lauryl acrylate, stearyl methacrylate, and isobornyl acrylate.
9. The high pressure plastic pipe of claim 1, wherein the outer shell layer is made of nylon.
10. A method for manufacturing a high compression molding compound tube according to any one of claims 1 to 9, comprising the steps of:
s1: extruding by adopting a multi-layer co-extrusion process to obtain a core layer and a reinforcing layer sleeved outside the core layer;
s2: coating a light-cured adhesive on the surface of the reinforcing layer to form a light-cured adhesive layer;
s3: and extruding nylon to obtain a nylon layer, and sleeving the nylon layer on the surface of the photocuring glue layer to obtain the high-compression-molding glue pipeline.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601882A (en) * | 2021-07-07 | 2021-11-05 | 武汉理工大学 | Water-lubricated bearing material of bionic iron plough wood structure and forming process thereof |
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| CN101885244A (en) * | 2010-06-29 | 2010-11-17 | 江苏双腾管业有限公司 | Method for manufacturing fiber reinforced high-temperature-resistant antistatic plastic pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113601882A (en) * | 2021-07-07 | 2021-11-05 | 武汉理工大学 | Water-lubricated bearing material of bionic iron plough wood structure and forming process thereof |
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