CN115366491A - Anti-corrosion high-ring-rigidity plastic pipeline - Google Patents
Anti-corrosion high-ring-rigidity plastic pipeline Download PDFInfo
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- CN115366491A CN115366491A CN202211200376.8A CN202211200376A CN115366491A CN 115366491 A CN115366491 A CN 115366491A CN 202211200376 A CN202211200376 A CN 202211200376A CN 115366491 A CN115366491 A CN 115366491A
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- ring stiffness
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- 238000005260 corrosion Methods 0.000 title claims abstract description 33
- 229920003023 plastic Polymers 0.000 title claims abstract description 32
- 239000004033 plastic Substances 0.000 title claims abstract description 32
- 239000011521 glass Substances 0.000 claims abstract description 66
- 239000011324 bead Substances 0.000 claims abstract description 41
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 26
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 26
- 230000007797 corrosion Effects 0.000 claims abstract description 24
- 239000004615 ingredient Substances 0.000 claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- 239000004595 color masterbatch Substances 0.000 claims abstract description 12
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims abstract description 12
- 229920001155 polypropylene Polymers 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000004005 microsphere Substances 0.000 claims description 20
- 239000012046 mixed solvent Substances 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 14
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 14
- 239000013638 trimer Substances 0.000 claims description 14
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 8
- 238000005406 washing Methods 0.000 description 12
- 239000004594 Masterbatch (MB) Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- 239000012065 filter cake Substances 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a corrosion-resistant plastic pipeline with high ring stiffness, which belongs to the technical field of plastic pipeline preparation and is prepared by extruding and molding an outer layer ingredient and an inner layer ingredient through an extruder; the outer layer ingredients comprise the following components in parts by weight: 85-100 parts of high-density polyethylene, 15-25 parts of polypropylene, 18-25 parts of modified hollow glass beads, 1-2 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch; the inner layer comprises the following components in parts by weight: 85-100 parts of high-density polyethylene, 20-30 parts of polypropylene, 5-10 parts of modified hollow glass beads, 1-3 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch; according to the invention, the self-made modified hollow glass beads are added to improve the ring stiffness and corrosion resistance of the plastic pipeline, and the aim of reducing the weight of the plastic pipeline is achieved.
Description
Technical Field
The invention belongs to the technical field of plastic pipeline preparation, and particularly relates to a corrosion-resistant plastic pipeline with high ring stiffness.
Background
The double-wall corrugated pipe is a novel pipe with a hollow corrugated outer wall and a smooth inner wall, has the advantages of material saving, light weight, excellent bending property, convenient construction and the like compared with other pipes with the same specification and strength, and is widely used as a buried drain pipe, an underground cable pipe and the like at present.
At present, two main varieties of double-wall corrugated pipes are polyvinyl chloride and high-density polyethylene (HDPE), the HDPE corrugated pipes are widely applied with the advantages of good corrosion resistance, difficult scaling on the surface and the like, but the double-wall corrugated pipes have higher requirements on the ring stiffness of the pipes, the HDPE resin has low modulus, and the application of the HDPE resin in partial fields is limited due to insufficient strength and stiffness. At present, inorganic rigid particles are generally added to improve the ring stiffness of the HDPE double-wall corrugated pipe, although the system stiffness can be improved, the bonding property between a resin matrix and the inorganic rigid particles is poor, internal defects are easily formed, particularly, the service life of the corrugated pipe is short when corrosive wastewater or seawater is conveyed, municipal products generally pay attention to light weight design, and due to the addition of a large amount of inorganic rigid particles, the corrugated pipe is high in meter weight, inconvenient to transport, low in construction efficiency and deviated from the light weight target.
Therefore, it is necessary to develop a plastic pipe which is lightweight and resistant to corrosion and has high ring stiffness.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, the invention provides a corrosion-resistant plastic pipe with high ring stiffness.
The purpose of the invention can be realized by the following technical scheme:
the plastic pipeline is made by extruding outer layer material and inner layer material in an extruder.
The outer layer ingredients comprise the following components in parts by weight: 85-100 parts of high-density polyethylene, 15-25 parts of polypropylene, 18-25 parts of modified hollow glass beads, 1-2 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch;
the inner layer comprises the following components in parts by weight: 85-100 parts of high-density polyethylene, 20-30 parts of polypropylene, 5-10 parts of modified hollow glass beads, 1-3 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch.
The preparation method of the corrosion-resistant plastic pipeline with high ring stiffness comprises the following steps:
according to the inner layer and the outer layer, raw materials are uniformly mixed in a high-speed mixer respectively, then the mixture is transferred to an inner layer extruder and an outer layer extruder of a double-wall corrugated pipe production line, the mixture is subjected to melting plasticization, a pipe blank is obtained through a co-extrusion composite machine head, the pipe blank is cooled and shaped through a corrugation module and a flaring module, and then the pipe blank is subjected to metering of a length metering device and cutting of a cutting device to obtain a pipe with a fixed length, and then the pipe blank is sent into an automatic flaring machine to perform flaring processing on the head of the pipe blank to obtain the plastic pipeline with corrosion resistance and high ring stiffness.
Further, the modified hollow glass bead is prepared by the following steps:
s1, adding hollow glass beads into a flask, adding a 0.3mol/L NaOH solution, heating to 80 ℃, stirring for 1-2h, performing suction filtration, washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain pretreated glass beads, wherein the particle size of the hollow glass beads is 10-65 μm, and the ratio of the hollow glass beads to the NaOH solution is 1g:30mL;
s2, ultrasonically mixing the pretreated glass beads, absolute ethyl alcohol and deionized water for 20min, adding a silane coupling agent KH-550, stirring for 2-3h at 80 ℃, filtering, washing a filter cake with 40wt% of ethanol solution, and drying at 70 ℃ to constant weight to obtain aminated glass beads, wherein the mass ratio of the pretreated glass beads to the absolute ethyl alcohol to the deionized water to KH-550 is 10:90:10:0.2 to 0.3;
s3, adding the aminated glass beads into a mixed solvent, performing ultrasonic dispersion for 20min, adding the mixed solvent of hexamethylene diisocyanate trimer, stirring and reacting for 4-6h at 25 ℃, then adding the FEVE fluororesin, stirring and reacting for 12-14h at 25 ℃, filtering after the reaction is finished, washing a filter cake for 3-5 times by using the mixed solvent, and drying at 140 ℃ to constant weight to obtain modified hollow glass beads; the dosage ratio of the aminated glass micro-beads, the mixed solvent of hexamethylene diisocyanate trimer and the FEVE fluororesin is 2-3g:200mL of the solution: 5-6mL:0.3 to 0.4g, wherein the use ratio of the hexamethylene diisocyanate trimer to the mixed solvent in the mixed solvent of the hexamethylene diisocyanate trimer is 1g:10mL, and mixing a solvent prepared from xylene, ethyl acetate and butyl acetate according to a mass ratio of 6:7: 7.
The hollow glass microballoons are high-strength high-hardness inert particles, the main components of the hollow glass microballoons are silicon dioxide, calcium oxide, aluminum oxide and the like, the hollow glass microballoons have the advantages of small particle size, small density, low price and the like, the FEVE fluororesin has excellent weather resistance and low solar heat absorptivity, and contains active groups such as alkyl, hydroxyl, carboxyl and the like on side chains, so the invention aims to improve the corrosion resistance and the ring rigidity of the double-wall corrugated pipe by utilizing the advantages of the hollow glass microballoons and the FEVE fluororesin 2 By using-NH 2 Reacting with-NCO of hexamethylene diisocyanate trimer, introducing active-NCO groups, and finally reacting the-NCO groups with the active groups of the FEVE fluororesin to obtain the modified hollow glass microspheres.
Further, the master batch is a black master batch or a blue master batch.
Further, the high-density polyethylene adopts PE80 grade or PE100 grade.
Further, the specific molding process conditions are as follows: the temperature of the machine barrel is 170-190 ℃, the temperature of the machine head is 190-210 ℃, the rotating speed of the main machine is 600-650r/min, and the rotating speed of the auxiliary machine is 500-550r/min.
The invention has the beneficial effects that:
the invention provides a plastic pipeline with corrosion resistance and high ring stiffness, which improves the ring stiffness and the corrosion resistance of the plastic pipeline by adding self-made modified hollow glass beads and achieves the purpose of reducing the weight per meter, and the concrete explanation is as follows: organic polymers are introduced to the surfaces of the first modified hollow glass microspheres to improve the dispersity of the first modified hollow glass microspheres in a polymer matrix, alkyl chains introduced to the surfaces of the first modified hollow glass microspheres can be intertwined with high-density polyethylene molecular chains, and surface active hydroxyl groups and carboxyl groups can be chemically reacted with polypropylene maleic anhydride, so that the modified glass microspheres and the polymer matrix form good interface combination, when the first modified hollow glass microspheres are impacted, stress can be well distributed, stress concentration is reduced, the ring stiffness is improved, impact deformation energy is absorbed under the action of the stress, the brittle-tough transition of the high-density polyethylene matrix is promoted, and the toughening effect is achieved; due to the existence of the fluorine-containing resin on the surface of the second modified hollow glass bead, a fluorine-containing chain layer is formed on the surface of the double-wall corrugated pipe based on the low surface energy and the easy mobility of fluorine atoms, so that the water resistance and the corrosion resistance of the corrugated pipe are improved; the third modified hollow glass bead has lower density, and can reduce the meter weight of the double-wall corrugated pipe and improve the transportation construction efficiency compared with the traditional inorganic filling ions.
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 modified hollow glass bead is prepared by the following steps:
step S1, adding 10g of hollow glass beads into a flask, adding 300mL of 0.3mol/L NaOH solution, heating to 80 ℃, stirring for 1h, performing suction filtration, washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain pretreated glass beads, wherein the particle size of the hollow glass beads is 10-65 mu m;
s2, ultrasonically mixing 10g of pretreated glass beads, 90g of absolute ethyl alcohol and 10g of deionized water for 20min, adding 0.2g of silane coupling agent KH-550, stirring for 2h at 80 ℃, filtering, washing a filter cake by using 40wt% of ethanol solution, and drying to constant weight at 70 ℃ to obtain aminated glass beads;
s3, adding 2g of aminated glass microspheres into 200mL of mixed solvent, performing ultrasonic dispersion for 20min, adding 5mL of mixed solvent of hexamethylene diisocyanate trimer, performing stirring reaction for 4h at 25 ℃, then adding 0.3g of FEVE fluororesin (M =20000, hydroxyl value =25mgKOH/g, fluorine content is 25%), performing stirring reaction for 12h at 25 ℃, filtering after the reaction is finished, washing filter cakes for 3 times by using the mixed solvent, and drying at 140 ℃ to constant weight to obtain modified hollow glass microspheres; the use amount ratio of the hexamethylene diisocyanate trimer to the mixed solvent in the mixed solvent of the hexamethylene diisocyanate trimer is 1g:10mL, and mixing a solvent prepared from xylene, ethyl acetate and butyl acetate according to a mass ratio of 6:7:7 are mixed.
Example 2
The modified hollow glass bead is prepared by the following steps:
step S1, adding 10g of hollow glass beads into a flask, adding 300mL of 0.3mol/L NaOH solution, heating to 80 ℃, stirring for 2 hours, carrying out suction filtration, washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain pretreated glass beads, wherein the particle size of the hollow glass beads is 10-65 mu m;
s2, ultrasonically mixing 10g of pretreated glass beads, 90g of absolute ethyl alcohol and 10g of deionized water for 20min, adding 0.3g of silane coupling agent KH-550, stirring for 3h at 80 ℃, filtering, washing a filter cake by using 40wt% of ethanol solution, and drying to constant weight at 70 ℃ to obtain aminated glass beads;
s3, adding 3g of aminated glass microspheres into 200mL of mixed solvent, performing ultrasonic dispersion for 20min, adding 6mL of mixed solvent of hexamethylene diisocyanate trimer, performing stirring reaction for 6h at 25 ℃, then adding 0.4g of FEVE fluororesin (M =20000, hydroxyl value =25mgKOH/g, fluorine content is 25%), performing stirring reaction for 14h at 25 ℃, filtering after the reaction is finished, washing filter cakes for 5 times by using the mixed solvent, and drying at 140 ℃ to constant weight to obtain modified hollow glass microspheres; the use amount ratio of the hexamethylene diisocyanate trimer to the mixed solvent in the mixed solvent of the hexamethylene diisocyanate trimer is 1g:10mL, and mixing a solvent prepared from xylene, ethyl acetate and butyl acetate according to a mass ratio of 6:7:7 are mixed.
Comparative example 1
This comparative example is the result of step S2 of example 1.
Example 3
The anti-corrosion plastic pipeline with high ring stiffness is prepared by extruding outer layer ingredients and inner layer ingredients through an extruder.
The outer layer ingredients comprise the following components in parts by weight: 85 parts of high-density polyethylene, 15 parts of polypropylene, 18 parts of modified hollow glass microspheres in example 1, 1 part of maleic anhydride grafted polypropylene and 1 part of color master batch;
the inner layer comprises the following components in parts by weight: 85 parts of high-density polyethylene, 20 parts of polypropylene, 5 parts of modified hollow glass microspheres in example 1, 1 part of maleic anhydride grafted polypropylene and 1 part of color master batch.
The preparation method of the corrosion-resistant plastic pipeline with high ring stiffness comprises the following steps:
according to the inner layer and the outer layer, raw materials are uniformly mixed in a high-speed mixer respectively, then the mixture is transferred to an inner layer extruder and an outer layer extruder of a double-wall corrugated pipe production line, the mixture is subjected to melting plasticization, a pipe blank is obtained through a co-extrusion composite machine head, the pipe blank is cooled and shaped through a corrugation module and a flaring module, and then the pipe blank is subjected to metering of a length metering device and cutting of a cutting device to obtain a pipe with a fixed length, and then the pipe blank is sent into an automatic flaring machine to perform flaring processing on the head of the pipe blank to obtain the anti-corrosion high-ring-stiffness plastic pipeline with the diameter of 800 mm.
The master batch is black master batch, the high-density polyethylene adopts PE80 grade, and the specific forming process conditions are as follows: the temperature of a machine barrel is 170-190 ℃, the temperature of a machine head is 190-210 ℃, the rotating speed of a main machine is 600r/min, and the rotating speed of an auxiliary machine is 500r/min.
Example 4
The anti-corrosion plastic pipeline with high ring stiffness is prepared by extruding outer layer ingredients and inner layer ingredients through an extruder.
The outer layer ingredients comprise the following components in parts by weight: 90 parts of high-density polyethylene, 20 parts of polypropylene, 20 parts of modified hollow glass microspheres in example 2, 1 part of maleic anhydride grafted polypropylene and 2 parts of color master batch;
the inner layer comprises the following components in parts by weight: 90 parts of high-density polyethylene, 25 parts of polypropylene, 8 parts of modified hollow glass microspheres in example 2, 2 parts of maleic anhydride grafted polypropylene and 2 parts of color master batch.
The preparation method of the corrosion-resistant plastic pipeline with high ring stiffness comprises the following steps:
according to the inner layer and the outer layer, raw materials are uniformly mixed in a high-speed mixer respectively, then the mixture is transferred to an inner layer extruder and an outer layer extruder of a double-wall corrugated pipe production line, the mixture is subjected to melting plasticization, a pipe blank is obtained through a co-extrusion composite machine head, the pipe blank is cooled and shaped through a corrugation module and a flaring module, and then the pipe blank is subjected to metering of a length metering device and cutting of a cutting device to obtain a pipe with a fixed length, and then the pipe blank is sent into an automatic flaring machine to perform flaring processing on the head of the pipe blank to obtain the anti-corrosion high-ring-stiffness plastic pipeline with the diameter of 800 mm.
The master batch is black master batch, the high-density polyethylene adopts PE80 grade, and the specific forming process conditions are the same as those in example 3.
Example 5
The anti-corrosion plastic pipeline with high ring stiffness is prepared by extruding outer layer ingredients and inner layer ingredients through an extruder.
The outer layer ingredients comprise the following components in parts by weight: 100 parts of high-density polyethylene, 25 parts of polypropylene, 25 parts of modified hollow glass microspheres in example 1, 2 parts of maleic anhydride grafted polypropylene and 3 parts of color master batch;
the inner layer comprises the following components in parts by weight: 100 parts of high-density polyethylene, 30 parts of polypropylene, 10 parts of modified hollow glass microspheres in example 1, 3 parts of maleic anhydride grafted polypropylene and 3 parts of color master batch.
The preparation method of the corrosion-resistant plastic pipeline with high ring stiffness comprises the following steps:
according to the inner layer and the outer layer, raw materials are uniformly mixed in a high-speed mixer respectively, then the mixture is transferred to an inner layer extruder and an outer layer extruder of a double-wall corrugated pipe production line, the mixture is subjected to melting plasticization, a pipe blank is obtained through a co-extrusion composite machine head, the pipe blank is cooled and shaped through a corrugation module and a flaring module, and then the pipe blank is subjected to metering of a length metering device and cutting of a cutting device to obtain a pipe with a fixed length, and then the pipe blank is sent into an automatic flaring machine to perform flaring processing on the head of the pipe blank to obtain the anti-corrosion high-ring-stiffness plastic pipeline with the diameter of 800 mm.
Wherein the master batch is black master batch, the high-density polyethylene adopts PE80 grade, and the specific molding process conditions are the same as those in example 3.
Comparative example 2
The modified hollow glass microspheres obtained in example 3 were replaced with the materials obtained in comparative example 1, and the remaining raw materials and preparation process were the same as those in example 3.
Comparative example 3
The modified hollow glass beads in example 4 were replaced with glass beads, and the remaining raw materials and preparation process were the same as in example 4.
The plastic pipes prepared in examples 3 to 5 and comparative examples 2 to 3 were tested for ring stiffness, ring flexibility: testing according to the method specified in GB/T19472.1-2019; the higher the ring rigidity value is, the better the rigidity of the material is; the ring flexibility requires that the HDPE double-wall corrugated pipe has no crack under the condition of 30% of the deformation of the outer diameter; seawater corrosion resistance: the inner wall of the HDPE double-wall corrugated pipe is tested according to ISO4433-2, and the lower the seawater corrosion resistance value is, the better the corrosion resistance of the material is; the test results are shown in table 1:
TABLE 1
As can be seen from table 1, the plastic pipe rings prepared in examples 3 to 5 are higher in rigidity, better in corrosion resistance, and lightweight, as compared with comparative examples 2 to 3.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. The anti-corrosion plastic pipeline with high ring stiffness is characterized by being prepared by extruding and molding outer layer ingredients and inner layer ingredients through an extruder;
the outer layer ingredients comprise the following components in parts by weight: 85-100 parts of high-density polyethylene, 15-25 parts of polypropylene, 18-25 parts of modified hollow glass beads, 1-2 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch;
the inner layer comprises the following components in parts by weight: 85-100 parts of high-density polyethylene, 20-30 parts of polypropylene, 5-10 parts of modified hollow glass beads, 1-3 parts of maleic anhydride grafted polypropylene and 1-3 parts of color master batch.
2. A corrosion-resistant high ring stiffness plastic pipe according to claim 1, wherein the modified hollow glass microspheres are produced by the steps of:
adding the aminated glass beads into a mixed solvent for ultrasonic dispersion, adding the mixed solvent of hexamethylene diisocyanate trimer, stirring and reacting for 4-6h at 25 ℃, then adding FEVE fluororesin, stirring and reacting for 12-14h at 25 ℃ to obtain the modified hollow glass beads.
3. The plastic pipe with corrosion resistance and high ring stiffness as claimed in claim 2, wherein the amount ratio of the hexamethylene diisocyanate trimer to the mixed solvent in the mixed solvent of the hexamethylene diisocyanate trimer is 1g:10mL, and mixing a solvent prepared from xylene, ethyl acetate and butyl acetate according to a mass ratio of 6:7: 7.
4. The plastic pipe with corrosion resistance and high ring stiffness as claimed in claim 2, wherein the aminated glass microspheres are prepared by the following steps:
step S1, adding hollow glass beads into a flask, adding a NaOH solution with the concentration of 0.3mol/L, heating to 80 ℃, and stirring for 1-2 hours to obtain pretreated glass beads;
and S2, ultrasonically mixing the pretreated glass beads, absolute ethyl alcohol and deionized water for 20min, adding a silane coupling agent KH-550, and stirring at 80 ℃ for 2-3h to obtain the aminated glass beads.
5. A corrosion-resistant high ring stiffness plastic pipe according to claim 4, wherein the ratio of the amount of hollow glass beads to the amount of NaOH solution is 1g:30mL.
6. The plastic pipeline with corrosion resistance and high ring stiffness as claimed in claim 4, wherein the mass ratio of the pretreated glass microspheres, the absolute ethyl alcohol, the deionized water and the KH-550 is 10:90:10:0.2-0.3.
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| CN117567813A (en) * | 2023-11-29 | 2024-02-20 | 湖南同进新材料股份有限公司 | Bamboo-wood fiber composite wallboard and preparation method thereof |
| CN118126620A (en) * | 2024-02-19 | 2024-06-04 | 张家港市卓华金属科技有限公司 | Corrosion-resistant heat-insulating powder coating and preparation method thereof |
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| CN109734988A (en) * | 2019-01-17 | 2019-05-10 | 湖北盈禄塑胶制品有限公司 | A kind of high ring rigidity internal-rib enhancing bellows and preparation method thereof |
| CN109824941A (en) * | 2019-03-07 | 2019-05-31 | 中国人民解放军海军工程大学 | A kind of preparation method of the modification hollow glass microbead of surface grafting fluorine resin |
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| CN109734988A (en) * | 2019-01-17 | 2019-05-10 | 湖北盈禄塑胶制品有限公司 | A kind of high ring rigidity internal-rib enhancing bellows and preparation method thereof |
| CN109824941A (en) * | 2019-03-07 | 2019-05-31 | 中国人民解放军海军工程大学 | A kind of preparation method of the modification hollow glass microbead of surface grafting fluorine resin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117567813A (en) * | 2023-11-29 | 2024-02-20 | 湖南同进新材料股份有限公司 | Bamboo-wood fiber composite wallboard and preparation method thereof |
| CN117567813B (en) * | 2023-11-29 | 2024-09-27 | 宁波顺道建筑科技有限公司 | Bamboo-wood fiber composite wallboard and preparation method thereof |
| CN118126620A (en) * | 2024-02-19 | 2024-06-04 | 张家港市卓华金属科技有限公司 | Corrosion-resistant heat-insulating powder coating and preparation method thereof |
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