CN114605727A - Regenerated polyethylene nano modified alloy MUHDPE (polyethylene) pipe - Google Patents
Regenerated polyethylene nano modified alloy MUHDPE (polyethylene) pipe Download PDFInfo
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- CN114605727A CN114605727A CN202210409176.7A CN202210409176A CN114605727A CN 114605727 A CN114605727 A CN 114605727A CN 202210409176 A CN202210409176 A CN 202210409176A CN 114605727 A CN114605727 A CN 114605727A
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 66
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 60
- -1 polyethylene Polymers 0.000 title claims abstract description 51
- 239000000956 alloy Substances 0.000 title claims abstract description 40
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000002131 composite material Substances 0.000 claims abstract description 24
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 9
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 9
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 9
- 239000003607 modifier Substances 0.000 claims abstract description 9
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000004645 aluminates Chemical class 0.000 claims abstract description 7
- 239000006229 carbon black Substances 0.000 claims abstract description 7
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 239000004611 light stabiliser Substances 0.000 claims abstract description 7
- 239000002667 nucleating agent Substances 0.000 claims abstract description 7
- 239000012785 packaging film Substances 0.000 claims abstract description 7
- 229920006280 packaging film Polymers 0.000 claims abstract description 7
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 5
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- 238000005469 granulation Methods 0.000 claims description 3
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- 239000000945 filler Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 14
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
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- 239000000155 melt Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Images
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- C—CHEMISTRY; METALLURGY
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- 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
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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 general shape other than plane
- B32B1/08—Tubular products
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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
- 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
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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
- 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
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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
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2597/00—Tubular articles, e.g. hoses, pipes
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention relates to the field of polymer composite materials and products, in particular to a regenerated polyethylene nano modified alloy MUHDPE (polyethylene high-density polyethylene) pipe, which is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer and the inner layer are both made of a regenerated polyethylene nano modified alloy MUHDPE composite material; the regenerated polyethylene nano modified alloy MUHDPE composite material comprises the following materials: PE large-hollow-level broken sheet stock, heavy packaging film broken sheet stock, HDPE bottle cap broken sheet stock, PE regenerated plastic modifier, beta nucleating agent, superfine talcum powder, nano-scale heavy calcium carbonate, white carbon black, diffusion oil, aluminate coupling agent, light stabilizer, antioxidant 1010 and antioxidant 168. The invention improves the ring stiffness, ring flexibility, shock resistance and low temperature and weather resistance of the pipe.
Description
Technical Field
The invention relates to the field of polymer composite materials and products, in particular to a regenerated polyethylene nano modified alloy MUHDPE pipe.
Background
Most plastic sewage pipeline products show that the ring stiffness is not high, the pipe is large in brittleness and poor in impact resistance, the inner wall and the outer wall of the pipe are rough, the low-temperature brittleness is obvious, the mouth of the product is seriously damaged, and the pipe is often broken and blocked by water flow after the pipe is buried; moreover, the construction difficulty of the pipes is high, the connection between the pipes leaks water, the strength of the connection flaring of the pipes is insufficient, and the pipes are easy to damage; the product reject ratio of more than 90 percent in a production workshop is caused by the flaring problem of the pipe. Among the numerous plastic buried drain pipes, the double-wall corrugated pipe has a unique structural design, which saves more raw materials than other plastic pipes.
At present, the raw materials for producing double-wall corrugated structural pipes in China mainly comprise polyvinyl chloride (PVC), Polyethylene (PE) and polypropylene (PP). The polyvinyl chloride double-wall corrugated pipe has the advantages that the rigidity of the polyvinyl chloride material is high, and the elastic modulus of the polyvinyl chloride material is larger than that of the polyethylene material. Thus, a smaller moment of inertia can be used to achieve the same ring stiffness and a smaller wall thickness can be used if the same wave design is used. Therefore, the polyvinyl chloride double-wall corrugated pipe is superior in economical efficiency in a certain range, but the polyvinyl chloride material has poor fluidity and thermal stability, so that the production of the large-caliber double-wall corrugated pipe is difficult, the polyethylene material has good flexibility, the construction can be performed in a low-temperature environment, and the polyethylene pipe has the advantages of being capable of being welded, light in specific gravity and the like.
The problems that the melt strength is not enough, the ring rigidity of a product cannot meet the requirement and the like can occur when a plurality of domestic common pipe materials are used for producing the large-caliber double-wall corrugated pipe. The ring stiffness and ring flexibility are the most important performance indicators for pipes because in buried drain pipe applications, the pipe does not bear internal pressure or very low pressure, but only external pressure loads. If the ring stiffness of the pipe is too small, the pipe is deformed and damaged greatly, so that the safe use of the pipe cannot be ensured; if the ring flexibility is too low, the pipe is easy to damage and leak water in the use process. Inorganic fillers are added, such as: chopped glass fiber, calcium carbonate, talcum powder, kaolin, wollastonite and the like are used for reducing the material cost and improving the rigidity of the material performance, however, the material performance is generally embrittled after inorganic filling materials are added into plastic materials, the notch impact toughness is reduced, and the service performance of the material is obviously influenced. When increasing the toughness of plastics, it was earlier common to use rubber-like elastomers, such as: the rubber toughening polymer can multiply increase the impact toughness of toughening systems such as ABS (polyacrylonitrile-butadiene-styrene), HIPS (high impact polystyrene) and EPDM (polypropylene/ethylene propylene diene monomer rubber (containing dicyclopentadiene)), but the rubber toughening polymer has low modulus and glass transition temperature, so that the toughening plastic has inherent defects, such as greatly reduced rigidity, strength and thermal deformation temperature of the material, increased cost and the like. The strength increase or toughness improvement of the polyethylene composite material always comes at the expense of other properties, so how to keep the balance of the strength and the toughness of the regenerated plastic modified polyethylene composite material is a key problem for preparing the buried sewage polyethylene regenerated polyethylene nano modified alloy MUHDPE pipe.
The recycled plastic is mixed and the material is not clear, so that the material is impure and incompatible in a composite material system, and the ring stiffness, the ring flexibility, the impact resistance and the low-temperature resistance and weather resistance of the pipe prepared by the material can not meet the use requirements.
Disclosure of Invention
The invention aims to provide a recycled polyethylene nano modified alloy MUHDPE (multi-layer polyethylene) pipe aiming at the problems in the background technology, solves the compatibility problem of mixed recycled plastics, improves the material performance by synthesizing alloy from multi-element materials, and can meet the use requirement.
The technical scheme of the invention is that the regenerated polyethylene nano modified alloy MUHDPE pipe is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer and the inner layer are both made of regenerated polyethylene nano modified alloy MUHDPE composite materials. The regenerated polyethylene nano modified alloy MUHDPE composite material comprises the following materials in parts by weight: 50-60 parts of PE large-hollow-level broken sheet stock, 5-10 parts of heavy packaging film broken sheet stock, 5-10 parts of HDPE bottle cap broken sheet stock, 5-15 parts of PE regenerated plastic modifier, 0.3-0.5 part of beta nucleating agent, 5-7 parts of superfine talcum powder, 10-18 parts of nano heavy calcium carbonate, 1-3 parts of white carbon black, 0.3-0.6 part of diffusion oil, 1-2 parts of aluminate coupling agent, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010 and 0.3-0.6 part of antioxidant 168.
Preferably, the raw materials are prepared according to the following parts by weight: 50-60 parts of PE large-hollow-level broken sheet stock, 5-10 parts of heavy packaging film broken sheet stock, 5-10 parts of HDPE bottle cap broken sheet stock, 5-15 parts of PE regenerated plastic modifier and 0.3-0.5 part of beta nucleating agent; adding the materials into a high-speed mixer, and mixing for 5-10 minutes to obtain a mixture A;
preparing a filler according to the following parts by weight: 5-7 parts of superfine talcum powder, 10-18 parts of nano heavy calcium carbonate, 1-3 parts of white carbon black, 0.3-0.6 part of diffusion oil, 1-2 parts of aluminate coupling agent, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010 and 0.3-0.6 part of antioxidant 168; and adding the materials into a high-speed mixer, and mixing for 5-10 minutes to obtain a mixture B.
Preferably, A, B two mixed materials are added into a high-speed mixing machine set for mixing, modification and preplasticizing for 10-15 minutes, then added into a double-stage extrusion machine set for melting, plasticizing, mixing, extruding and granulating, and finally cooled and granulated to obtain the regenerated polyethylene nano modified alloy MUHDPE composite material, wherein the charging barrel temperatures are respectively as follows: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 190 ℃ and the neck mold temperature is as follows: 190 ℃.
Preferably, A, B two mixed materials are added into an internal mixer for mixing, modification, melting, plasticizing and mixing, then an extruder set is used for extrusion and granulation, and finally cooling and grain cutting are carried out, so as to obtain the regenerated polyethylene nano modified alloy MUHDPE composite material.
Preferably, when preparing the pipe, add inlayer material and skin material respectively in two extruders and extrude, the material heats melting plastify through the extruder screw rod and carries to the aircraft nose bush, the pipe inlayer is through interior sizing sleeve evacuation recooling design, the pipe skin is in close contact with the module shaping under the combined action of inside air pressure and outside vacuum suction, the inside and outside layer of pipe fuses together evenly, each section temperature is extruded to the inlayer: 170 ℃, 180 ℃, 200 ℃, 200 ℃, and the temperature of each section of outer layer extrusion: 175 ℃, 185 ℃, 205 ℃, 205 ℃ and 205 ℃.
Preferably, the outer layer is a double-wave-shaped structure.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention adopts the recycled polyethylene nano modified alloy MUHDPE composite material to prepare the recycled polyethylene nano modified alloy MUHDPE pipe, and the prepared recycled polyethylene nano modified alloy MUHDPE pipe has obviously improved ring rigidity, ring flexibility, impact resistance, low temperature resistance and weather resistance, and can meet the performance requirements of buried sewage pipes.
Drawings
FIG. 1 is a schematic view of the structure of the pipe connection;
FIG. 2 is a sectional view of the pipe connection structure;
fig. 3 is an enlarged view of a structure at a in fig. 2.
Reference numerals: 1. a bellows body; 11. a body portion; 111. a crest portion; 1111. a wave groove; 112. a wave trough portion; 12. a flared part; 121. a main flared portion; 122. a limiting part; 123. a secondary flared portion; 2. a seal ring; 3. a limiting ring.
Detailed Description
The invention provides a recycled polyethylene nano modified alloy MUHDPE (MuHDPE) pipe which is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer is of a double-wave waveform structure, the wave crest structure is high, the effective area of the wave crest is large, and the structure mainly plays a role in bearing external pressure and enhancing strength. As shown in fig. 1-3, comprises a corrugated pipe body 1, a sealing ring 2 and a spacing ring 3. The corrugated pipe body 1 comprises a pipe body 11 and a flared part 12 which are integrally connected along the axial direction, a plurality of wave crest parts 111 are arranged on the periphery of the pipe body 11 side by side, wave grooves 1111 are formed on the periphery of the wave crest parts 111 to form an outer-layer double-wave waveform structure, wave trough parts 112 are formed between the adjacent wave crest parts 111, the flared part 12 comprises a main flared part 121, a limiting part 122 and an auxiliary flared part 123 which are sequentially connected, the main flared part 121 and the auxiliary flared part 123 are horn-shaped, the main flared part 121 is provided with an inner ring surface, and a clamping groove is formed between the main flared part 121 and the limiting part 122; the limiting ring 3 and the sealing ring 2 are sequentially sleeved at the two wave trough parts 112 along the direction away from the flared part 12.
Before connecting the two corrugated pipes, a limiting ring 3 is sleeved at the wave trough part 112, and then a sealing ring 2 is sleeved at the other wave trough part 112, wherein the limiting ring 3 and the sealing ring 2 are both arranged at the other end opposite to the flaring part 12. When connecting two bellows, insert the flaring portion 12 department of another bellows with spacing ring 3 and the sealing washer 2 place end of a bellows, sealing washer 2 is advanced to be gone into in flaring portion 12, and support tightly on the interior anchor ring of main flaring portion 121, spacing ring 3 chucking is in the draw-in groove, sealing washer 2 and spacing ring 3 both play sealed effect, play limiting displacement again, steadiness and leakproofness when effectively having ensured two bellows to connect, can not take place the dislocation when burying underground, can not appear revealing the condition in the junction.
The diameter of the narrowest part of the auxiliary flared part 123 is larger than the diameter of the narrowest part of the main flared part 121 and smaller than the diameter of the widest part of the main flared part 121, so that a clamping groove can be effectively formed between the main flared part 121 and the limiting part 122 for the limiting ring 3 to be clamped in. Spacing portion 122 is the annular structure, and spacing portion 122 outer end is connected with main flaring portion 121 widest end, and spacing portion 122 inner is connected with vice flaring portion 123 narrowest end, and main flaring portion 121 and vice flaring portion 123 are connected respectively at spacing portion 122 both ends, have realized linking up of two structures to form the draw-in groove. The main flared part 121 is parallel to the auxiliary flared part 123, that is, the main flared part 121 and the auxiliary flared part 123 are both inclined, and the auxiliary flared part 123 can guide the inserting process of the corrugated pipe, so that the sealing ring 2 and the limiting ring 3 on one corrugated pipe can be more smoothly inserted into the flared part 12 of another corrugated pipe.
2 outer peripheral faces of sealing washer are round platform shape inclined plane, and are provided with a plurality of recesses side by side along the axial on the 2 outer peripheral faces of sealing washer, and the diameter on round platform shape inclined plane reduces along keeping away from 3 directions on spacing collar gradually, then 2 outer peripheral faces of sealing washer have many places can with the abundant butt of interior anchor ring, can realize multiple sealing connection, sealed effect is better. The sealing ring 2 and the limiting ring 3 are both rubber rings, so that the sealing performance is good, the corrosion is avoided, and the service life is long.
Example one
For the regenerated polyethylene nano modified alloy MUHDPE composite material:
preparing a mixture A according to the following parts by weight:
50 parts of PE large-hollow-level broken sheet stock, 5 parts of heavy packaging film broken sheet stock, 5 parts of HDPE bottle cap broken sheet stock, 5 parts of PE regenerated plastic modifier and 0.3 part of beta nucleating agent; adding the mixture into a high-speed mixer to mix for 5-10 minutes to obtain a mixture A.
Preparing a mixture B according to the following parts by weight:
7 parts of superfine talcum powder, 18 parts of nano heavy calcium carbonate, 3 parts of white carbon black, 0.6 part of diffusion oil, 2 parts of aluminate coupling agent, 0.6 part of light stabilizer, 0.6 part of antioxidant 1010 and 0.6 part of antioxidant 168; adding the mixture into a high-speed mixer to mix for 5-10 minutes to obtain a mixture B.
The nano-particle and PE modifier modified polyethylene are used, in the melt blending process, nano-scale calcium carbonate and talc bodies are dispersed in an organic polymer matrix according to different particle sizes in nano sizes and different shapes to form a nano-alloy composite material, the nano-alloy composite material has excellent wear resistance, corrosion resistance, high strength and other properties, and a finished pipe product prepared from the nano-particle and PE modifier modified polyethylene is easy to transport, install, use and maintain. The elastomer compatible toughening agent POE6102 is used to improve the compatibility and the dispersibility of the system and enhance the rigidity, the toughness, the low temperature resistance and the weather resistance of the system material.
The regenerated polyethylene nano modified alloy MUHDPE composite material can be manufactured by the following two ways:
the first mode is as follows: a, B, adding the two mixed materials into a high-speed mixing machine set for mixing, modifying and preplasticizing for 10-15 minutes, adding the materials into a double-stage extrusion machine set for melting, plasticizing, mixing, extruding and granulating, and finally cooling and dicing to obtain the regenerated polyethylene nano modified alloy MUHDPE composite material, wherein the material cylinder temperature is respectively as follows: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 190 ℃ and the neck mold temperature is as follows: 190 ℃.
The second mode is as follows: a, B adding the two mixed materials into an internal mixer for mixing, modification, melting, plasticizing and mixing, then extruding and granulating by an extruder set, and finally cooling and granulating to obtain the regenerated polyethylene nano modified alloy MUHDPE composite material.
When preparing tubular product, add two extruders respectively with inlayer material and skin material and extrude, the material is carried to the aircraft nose bush through extruder screw rod heating melting plastify, and the tubular product inlayer is through interior footpath cover evacuation recooling design, and the tubular product skin is in close contact with the shaping with the module under the combined action of inside air pressure and outside vacuum suction, and the inside and outside layer of tubular product fuses together evenly, and each section temperature is extruded to the inlayer: 170 ℃, 180 ℃, 200 ℃, 200 ℃, and the temperature of each section of outer layer extrusion: 175 deg.C, 185 deg.C, 205 deg.C.
Table 1: example one physical and mechanical properties of the prepared recycled polyethylene nano modified alloy MUHDPE pipe
Example two
The difference between the present embodiment and the first embodiment is that, for the recycled polyethylene nano-modified alloy MUHDPE composite material:
preparing a mixture A according to the following parts by weight:
60 parts of PE large-hollow-level broken sheet stock, 10 parts of heavy packaging film broken sheet stock, 10 parts of HDPE bottle cap broken sheet stock, 15 parts of PE regenerated plastic modifier and 0.6 part of beta nucleating agent; adding the mixture into a high-speed mixer to mix for 5-10 minutes to obtain a mixture A.
Preparing a mixture B according to the following parts by weight:
5 parts of superfine talcum powder, 10 parts of nano-scale heavy calcium carbonate, 1 part of white carbon black, 0.3 part of diffusion oil, 1 part of aluminate coupling agent, 0.3 part of light stabilizer, 0.3 part of antioxidant 1010 and 0.3 part of antioxidant 168; adding the mixture into a high-speed mixer to mix for 5-10 minutes to obtain a mixture B.
Table 2: physical and mechanical properties of the recycled polyethylene nano modified alloy MUHDPE pipe prepared in example two
The invention adopts the regenerated polyethylene nano modified alloy MUHDPE composite material to prepare the regenerated polyethylene nano modified alloy MUHDPE pipe material, and the prepared regenerated polyethylene nano modified alloy MUHDPE pipe material has obviously improved ring rigidity, ring flexibility, shock resistance and low temperature and weather resistance, and can meet the performance requirements of buried sewage pipes.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, 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 (6)
1. The recycled polyethylene nano modified alloy MUHDPE pipe is characterized by being formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer and the inner layer are both made of recycled polyethylene nano modified alloy MUHDPE composite materials;
the regenerated polyethylene nano modified alloy MUHDPE composite material comprises the following materials in parts by weight: 50-60 parts of PE large-hollow-level broken sheet stock, 5-10 parts of heavy packaging film broken sheet stock, 5-10 parts of HDPE bottle cap broken sheet stock, 5-15 parts of PE regenerated plastic modifier, 0.3-0.5 part of beta nucleating agent, 5-7 parts of superfine talcum powder, 10-18 parts of nano heavy calcium carbonate, 1-3 parts of white carbon black, 0.3-0.6 part of diffusion oil, 1-2 parts of aluminate coupling agent, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010 and 0.3-0.6 part of antioxidant 168.
2. The recycled polyethylene nano modified alloy MUHDPE pipe material of claim 1, which is characterized in that the raw materials are prepared according to the following parts by weight: 50-60 parts of PE large-hollow-level broken sheet stock, 5-10 parts of heavy packaging film broken sheet stock, 5-10 parts of HDPE bottle cap broken sheet stock, 5-15 parts of PE regenerated plastic modifier and 0.3-0.5 part of beta nucleating agent; adding the materials into a high-speed mixer, and mixing for 5-10 minutes to obtain a mixture A;
preparing a filler according to the following parts by weight: 5-7 parts of superfine talcum powder, 10-18 parts of nano heavy calcium carbonate, 1-3 parts of white carbon black, 0.3-0.6 part of diffusion oil, 1-2 parts of aluminate coupling agent, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010 and 0.3-0.6 part of antioxidant 168; and adding the materials into a high-speed mixer, and mixing for 5-10 minutes to obtain a mixture B.
3. The recycled polyethylene nano modified alloy MUHDPE pipe material as claimed in claim 2, wherein A, B two mixed materials are added into a high-speed mixer set for mixing, modification and preplasticizing for 10-15 minutes, then added into a double-stage extruder set for melting, plasticizing, mixing, extruding and granulating, and finally cooled and granulated to obtain the recycled polyethylene nano modified alloy MUHDPE composite material, wherein the charging barrel temperatures are respectively: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 190 ℃ and neck mold temperature: 190 ℃.
4. The recycled polyethylene nano modified alloy MUHDPE pipe material as claimed in claim 2, wherein A, B two mixed materials are added into an internal mixer for mixing, modification, melting, plasticizing, mixing, then extrusion and granulation are carried out by an extruder unit, and finally cooling and granulation are carried out, so as to obtain the recycled polyethylene nano modified alloy MUHDPE composite material.
5. The MUHDPE (multi-layer high-density polyethylene) pipe made of the recycled polyethylene nano modified alloy as claimed in claim 1, wherein when the pipe is prepared, the inner layer material and the outer layer material are respectively added into two extruders for extrusion, the materials are heated, melted, plasticized and conveyed to a head die through screws of the extruders, the inner layer of the pipe is vacuumized and cooled and shaped through an inner diameter sleeve, the outer layer of the pipe is tightly contacted with a module for molding under the combined action of internal air pressure and external vacuum suction, the inner layer and the outer layer of the pipe are uniformly fused together, and the inner layer is extruded at each temperature: 170 ℃, 180 ℃, 200 ℃, 200 ℃, and 200 ℃ in the extrusion of the outer layer: 175 deg.C, 185 deg.C, 205 deg.C.
6. The recycled polyethylene nano-modified alloy MUHDPE pipe material according to claim 1, wherein the outer layer is of a double-wave-shaped structure.
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| CN114889228A (en) * | 2022-06-28 | 2022-08-12 | 安徽源锂高新材料有限公司 | Polyethylene blending modified polyvinyl chloride drain pipe and preparation method thereof |
| CN115464938A (en) * | 2022-08-15 | 2022-12-13 | 安徽源锂高新材料有限公司 | Organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe and preparation method thereof |
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