CN110845794A - Corrugated pipe raw material composition, preparation method thereof and pipe - Google Patents
Corrugated pipe raw material composition, preparation method thereof and pipe Download PDFInfo
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- CN110845794A CN110845794A CN201911197822.2A CN201911197822A CN110845794A CN 110845794 A CN110845794 A CN 110845794A CN 201911197822 A CN201911197822 A CN 201911197822A CN 110845794 A CN110845794 A CN 110845794A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a corrugated pipe raw material composition, a preparation method thereof and a pipe, and belongs to the technical field of pipes. The corrugated pipe raw material composition comprises the following components in parts by mass: 63-92.8 percent of polypropylene, 5-25 percent of polymethyl methacrylate, 1-5 percent of 1, 2-polybutadiene, 1-5 percent of maleic anhydride, 0.1-1 percent of light stabilizer and 0.1-1 percent of antibacterial agent; wherein the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole; the antibacterial agent is silver-loaded zirconium phosphate. The corrugated pipe raw material composition provided by the embodiment of the invention solves the technical problem that the coexistence of the ring stiffness and the ring flexibility of the pipe is difficult to reach the standard, improves the physical and chemical properties and the yield of the pipe, is beneficial to the falling back of the manufacturing cost of the pipe, and prolongs the service life of the pipe.
Description
Technical Field
The invention relates to the technical field of pipes, in particular to a corrugated pipe raw material composition, a preparation method thereof and a pipe.
Background
At present, the raw materials of the supporting corrugated pipe of the B-shaped pipe with the high-density polyethylene winding structure wall manufactured and processed by pipe industry enterprises are mostly formed by blending and extruding polypropylene and glass fiber so as to meet the technical standard requirement of the ring stiffness of the pipe.
However, since the glass fiber is an inorganic reinforced material prepared from quartz sand, boron, magnesium stone and other ores through processes of melting, drawing and the like, and has larger difference and poorer compatibility with characteristics of an organic polypropylene carrier such as structure, polarity, crystal and the like, the standard-reaching rate of the rigidity inspection of a main technical index ring of the pipe is reduced, and the long-term stability of the performance of the pipe is not facilitated; particularly, due to the brittleness of the glass fiber inorganic reinforced material, the standard reaching rate of the main technical index ring flexibility inspection of the pipe is reduced, so that the technical standard requirement of the pipe with the compatible ring stiffness and ring flexibility is difficult to coexist and reach the standard.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a raw material composition for corrugated pipes, so as to solve the problems in the background art.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a corrugated pipe raw material composition comprises the following components in parts by mass: 63-92.8 percent of polypropylene, 5-25 percent of polymethyl methacrylate, 1-5 percent of 1, 2-polybutadiene, 1-5 percent of maleic anhydride, 0.1-1 percent of light stabilizer and 0.1-1 percent of antibacterial agent.
As a preferable scheme of the embodiment of the invention, the corrugated pipe raw material composition comprises the following components in percentage by mass: 70.18-85.61% of polypropylene, 8.56-21.05% of polymethyl methacrylate, 2.57-3.51% of 1, 2-polybutadiene, 2.57-4.21% of maleic anhydride, 0.26-0.49% of light stabilizer and 0.43-0.56% of antibacterial agent.
As another preferable mode of the embodiment of the present invention, the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole.
As another preferable embodiment of the present invention, the antibacterial agent is silver-loaded zirconium phosphate.
Another object of an embodiment of the present invention is to provide a method for preparing the above corrugated pipe raw material composition, which includes the following steps:
weighing polypropylene, polymethyl methacrylate, 1, 2-polybutadiene, maleic anhydride, a light stabilizer and an antibacterial agent according to the mass fraction for later use;
mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 50-80 ℃, and dispersing at 5-25 ℃ to obtain a dispersing material;
and melting and extruding the dispersed materials, and granulating to obtain the corrugated pipe raw material composition.
Another object of the embodiments of the present invention is to provide a raw material composition for corrugated pipes prepared by the above preparation method.
It is another object of embodiments of the present invention to provide a pipe, a portion or all of which comprises the above corrugated pipe stock composition.
As another preferable scheme of the embodiment of the present invention, the pipe is a high density polyethylene winding structure wall pipe, and the high density polyethylene winding structure wall pipe further includes high density polyethylene.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the corrugated pipe raw material composition provided by the embodiment of the invention solves the technical problem that the coexistence of the ring stiffness and the ring flexibility of the pipe is difficult to reach the standard, improves the physical and chemical properties and the yield of the pipe, is beneficial to the falling of the manufacturing cost of the pipe, and prolongs the service life of the pipe. The corrugated pipe raw material composition provided by the embodiment of the invention has the following functions:
1. the polypropylene is the base body and basic skeleton structure of the corrugated pipe raw material composition.
2. Polymethyl methacrylate is taken as a reinforcing agent, is an organic high molecular polymer for improving the physical properties of the elastic modulus of the corrugated pipe, and can greatly improve and enhance the mechanical properties of the corrugated pipe, such as ring stiffness, tensile strength, creep ratio and the like.
3. 1, 2-polybutadiene is a toughening agent, is a polymeric elastomer for increasing the flexibility of a corrugated pipe ring in a syndiotactic configuration, and a vinyl group and a third-level carbon atom of the polymeric elastomer are connected with a hydrogen atom, so that the compatibility and the flexibility with a base material are greatly improved, the corrugated pipe can bear higher pressure and has flexibility when the pressure is yielded, and the technical problem that the ring stiffness and the ring flexibility are compatible with each other is solved.
4. Maleic anhydride is a compatilizer which is an aldehyde polar group and an olefin nonpolar chain segment, and under the action of melting and shearing, the anhydride group and the polar group undergo dehydration reaction to form a chemical bond, so that a polar side group is introduced into a nonpolar polymer main chain and generates active grafting with a polar polymer branched chain to form a copolymer material. The grafting material components in the blending system not only keep the characteristics of independent materials, but also have better compatibility and cooperation in a copolymer system, thereby realizing the perfect combination of combining the advantages of different material characteristics to supplement the defects of single material characteristics.
5. The light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, and can absorb ultraviolet rays with the wavelength of 290-380 nm of solar radiation light waves. When the light stabilizer absorbs the light energy to decompose the hydrogen bond (the light stabilizer generates the intramolecular hydrogen bond), the absorbed energy is dissipated and released in the form of heat energy, and the degradation effect of ultraviolet light on the copolymer material is decomposed.
6. The antibacterial agent is silver-loaded zirconium phosphate (α -Zr (HPO)4)2·H2O) is an inorganic antibacterial agent having zirconium phosphate as a carrier and metal ions such as silver as antibacterial ions. When the pipe is buried underground for use, the antibacterial agent slowly releases and dissolves metal ions with positive charges and microbial cell membranes with negative charges to generate coulomb adsorption and penetrate into microbial cell nuclei, and the functional groups of microbial protein amino, hydroxyl, sulfydryl and the like are stopped to synthesize active enzymes, so that the broad-spectrum and efficient antibacterial effect is achieved, the multiplication of various microbial strains is effectively killed and inhibited, and the pipe is prevented from being corroded by microbial bacteria in the underground use processCausing the degradation of performance and quality and prolonging the service life of the pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The example provides a bellows feedstock composition, and a method of making the bellows feedstock composition comprises the steps of:
(1) 630g of polypropylene, 250g of polymethyl methacrylate, 50g of 1, 2-polybutadiene, 50g of maleic anhydride, 10g of light stabilizer and 10g of antibacterial agent are weighed for later use. Wherein the antibacterial agent is silver-loaded zirconium phosphate, specifically a commercially available antibacterial agent XDK-201 can be selected, and the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, specifically a commercially available light stabilizer UV-326 can be selected.
(2) Mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 50 ℃, and dispersing at 5 ℃ to obtain the dispersing material.
(3) And melting and extruding the dispersed materials, and granulating to obtain cylindrical particles with the particle size of 2mm and the particle length of 2mm, namely the corrugated pipe raw material composition. The corrugated pipe raw material composition can be mixed with high-density polyethylene to prepare a B-shaped pipe with a high-density polyethylene winding structure wall. It should be noted that the specific preparation process of the B-shaped tube with the high-density polyethylene winding structure wall is not an improvement point of the present invention, and the process of the prior art can be adopted, so that the detailed description is omitted here.
Example 2
The example provides a bellows feedstock composition, and a method of making the bellows feedstock composition comprises the steps of:
(1) weighing 928g of polypropylene, 50g of polymethyl methacrylate, 10g of 1, 2-polybutadiene, 10g of maleic anhydride, 1g of light stabilizer and 1g of antibacterial agent for later use. Wherein the antibacterial agent is silver-loaded zirconium phosphate, the commercially available antibacterial agent with the X DK-201 type can be specifically selected, and the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, and the commercially available light stabilizer with the UV-326 type can be specifically selected.
(2) Mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at a temperature of 80 ℃, and dispersing at a temperature of 25 ℃ to obtain a dispersing material.
(3) And melting and extruding the dispersed materials, and granulating to obtain cylindrical particles with the particle size of 3mm and the particle length of 5mm, namely the corrugated pipe raw material composition. The corrugated pipe raw material composition can be mixed with high-density polyethylene to prepare a B-shaped pipe with a high-density polyethylene winding structure wall. It should be noted that the specific preparation process of the B-shaped tube with the high-density polyethylene winding structure wall is not an improvement point of the present invention, and the process of the prior art can be adopted, so that the detailed description is omitted here.
Example 3
The example provides a bellows feedstock composition, and a method of making the bellows feedstock composition comprises the steps of:
(1) weighing 701.8 g of polypropylene, 210.5g of polymethyl methacrylate, 35.1g of 1, 2-polybutadiene, 42.1g of maleic anhydride, 4.9g of light stabilizer and 5.6g of antibacterial agent for later use. Wherein the antibacterial agent is silver-loaded zirconium phosphate, specifically a commercially available antibacterial agent XDK-201 can be selected, and the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, specifically a commercially available light stabilizer UV-326 can be selected.
(2) Mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 60 ℃, and dispersing at 10 ℃ to obtain the dispersing material.
(3) And melting and extruding the dispersed materials, and granulating to obtain spherical particles with the particle size of 1mm, namely the corrugated pipe raw material composition. The corrugated pipe raw material composition can be mixed with high-density polyethylene to prepare a B-shaped pipe with a high-density polyethylene winding structure wall. It should be noted that the specific preparation process of the B-shaped tube with the high-density polyethylene winding structure wall is not an improvement point of the present invention, and the process of the prior art can be adopted, so that the detailed description is omitted here.
Example 4
The example provides a bellows feedstock composition, and a method of making the bellows feedstock composition comprises the steps of:
(1) 856.1g of polypropylene, 85.6g of polymethyl methacrylate, 25.7g of 1, 2-polybutadiene, 25.7g of maleic anhydride, 2.6g of light stabilizer and 4.3g of antibacterial agent are weighed for later use. Wherein the antibacterial agent is silver-loaded zirconium phosphate, specifically a commercially available antibacterial agent XDK-201 can be selected, and the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, specifically a commercially available light stabilizer UV-326 can be selected.
(2) Mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 70 ℃, and dispersing at 20 ℃ to obtain the dispersing material.
(3) And melting and extruding the dispersed materials, and granulating to obtain spherical particles with the particle size of 5mm, namely the corrugated pipe raw material composition. The corrugated pipe raw material composition can be mixed with high-density polyethylene to prepare a B-shaped pipe with a high-density polyethylene winding structure wall. It should be noted that the specific preparation process of the B-shaped tube with the high-density polyethylene winding structure wall is not an improvement point of the present invention, and the process of the prior art can be adopted, so that the detailed description is omitted here.
Example 5
The example provides a bellows feedstock composition, and a method of making the bellows feedstock composition comprises the steps of:
(1) 781.5g of polypropylene, 150g of polymethyl methacrylate, 30g of 1, 2-polybutadiene, 30g of maleic anhydride, 3.5g of light stabilizer and 5g of antibacterial agent are weighed for later use. Wherein the antibacterial agent is silver-loaded zirconium phosphate, specifically a commercially available antibacterial agent XDK-201 can be selected, and the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, specifically a commercially available light stabilizer UV-326 can be selected.
(2) Mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 65 ℃, and dispersing at 15 ℃ to obtain the dispersing material.
(3) And melting and extruding the dispersed materials, and granulating to obtain spherical particles with the particle size of 3mm, namely the corrugated pipe raw material composition. The corrugated pipe raw material composition can be mixed with high-density polyethylene to prepare a B-shaped pipe with a high-density polyethylene winding structure wall. It should be noted that the specific preparation process of the B-shaped tube with the high-density polyethylene winding structure wall is not an improvement point of the present invention, and the process of the prior art can be adopted, so that the detailed description is omitted here.
Comparative example 1
This comparative example 1 provides a commercially available bellows stock composition that includes a polypropylene and a glass fiber component.
The corrugated pipe raw material compositions provided in the above example 5 and comparative example 1 are respectively produced with high density polyethylene according to the same process to produce a batch of high density polyethylene winding structure wall B-type pipe products with the same quantity and specification, and the standard reaching rate of indexes such as ring stiffness, ring flexibility and welding tensile force of the produced high density polyethylene winding structure wall B-type pipe products is tested, and the test results are shown in the following table 1. Wherein, the test method and the standard-reaching requirement of the ring rigidity can refer to GB/T9647-2015 standard. The test method of the ring flexibility can refer to GB/T9647-2015 standard, when the test force is continuously increased and the deformation of the outer diameter of the product in the vertical direction is 30% of the original outer diameter, the product is not bent reversely and cracked, and the product reaches the standard. The welding stretching force (seam stretching force) can be determined to reach the standard value according to the nominal diameter DN of different products, and when DN is more than or equal to 400mm and less than or equal to 500mm, the stretching force is not less than 510N to reach the standard; when DN is more than or equal to 600mm and less than or equal to 700mm, the tensile force is up to the standard only if the tensile force is not less than 760N; when DN is more than or equal to 800mm and less than or equal to 1700mm, the tensile force is up to the standard only if the tensile force is not less than 1020N.
TABLE 1
| Test items | Ring stiffness compliance (%) | Ring flexibility standard reaching rate (%) | Standard yield of weld elongation (%) |
| Example 5 | 98 | 99 | 95 |
| Comparative example 1 | 88 | 90 | 80 |
As can be seen from table 1 above, compared with the existing corrugated pipe raw material composition, the ring stiffness compliance rate, the ring flexibility compliance rate, and the welding tensile force compliance rate of the B-shaped pipe product of the high-density polyethylene winding structure wall, which is prepared by using the corrugated pipe raw material composition provided in embodiment 5 of the present invention, are all higher.
In addition, compared with the existing corrugated pipe raw material composition, the loop stiffness of the high-density polyethylene winding structure wall B-shaped pipe product prepared from the corrugated pipe raw material composition provided by the embodiment 5 of the invention is improved by 5.15% on average, and the welding tensile force evaluation is improved by 1.31%.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The corrugated pipe raw material composition is characterized by comprising the following components in parts by mass: 63-92.8 percent of polypropylene, 5-25 percent of polymethyl methacrylate, 1-5 percent of 1, 2-polybutadiene, 1-5 percent of maleic anhydride, 0.1-1 percent of light stabilizer and 0.1-1 percent of antibacterial agent.
2. The corrugated pipe stock composition as recited in claim 1, wherein the corrugated pipe stock composition comprises the following components in parts by mass: 70.18-85.61% of polypropylene, 8.56-21.05% of polymethyl methacrylate, 2.57-3.51% of 1, 2-polybutadiene, 2.57-4.21% of maleic anhydride, 0.26-0.49% of light stabilizer and 0.43-0.56% of antibacterial agent.
3. The bellows feedstock composition of claim 1 or 2 wherein the light stabilizer is 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole.
4. The bellows feedstock composition of claim 1 or 2 wherein the antimicrobial agent is silver-loaded zirconium phosphate.
5. A method for preparing a raw material composition for corrugated pipes according to any one of claims 1 to 4, comprising the steps of:
weighing polypropylene, polymethyl methacrylate, 1, 2-polybutadiene, maleic anhydride, a light stabilizer and an antibacterial agent according to the mass fraction for later use;
mixing the polypropylene, the polymethyl methacrylate, the 1, 2-polybutadiene, the maleic anhydride, the light stabilizer and the antibacterial agent at 50-80 ℃, and dispersing at 5-25 ℃ to obtain a dispersing material;
and melting and extruding the dispersed materials, and granulating to obtain the corrugated pipe raw material composition.
6. A corrugated pipe stock composition produced by the production method according to claim 5.
7. A pipe, wherein part or all of the pipe comprises the corrugated pipe stock composition according to any one of claims 1 to 4 and claim 6.
8. The tube of claim 7, wherein the tube is a high density polyethylene wound structural wall tube, and the high density polyethylene wound structural wall tube further comprises high density polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911197822.2A CN110845794A (en) | 2019-11-29 | 2019-11-29 | Corrugated pipe raw material composition, preparation method thereof and pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911197822.2A CN110845794A (en) | 2019-11-29 | 2019-11-29 | Corrugated pipe raw material composition, preparation method thereof and pipe |
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Cited By (1)
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| CN111440379A (en) * | 2020-05-18 | 2020-07-24 | 江西天丰建设集团管业科技有限公司 | Mixed material for manufacturing high-density polyethylene double-wall corrugated pipe and preparation method |
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