CN114573896B - High-density polyethylene double-wall corrugated pipe and preparation method and application thereof - Google Patents
High-density polyethylene double-wall corrugated pipe and preparation method and application thereof Download PDFInfo
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- CN114573896B CN114573896B CN202210154506.2A CN202210154506A CN114573896B CN 114573896 B CN114573896 B CN 114573896B CN 202210154506 A CN202210154506 A CN 202210154506A CN 114573896 B CN114573896 B CN 114573896B
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
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Abstract
The invention belongs to the technical field of high polymer materials, and discloses a high-density polyethylene double-wall corrugated pipe and a preparation method and application thereof. The invention relates to a high-density polyethylene double-wall corrugated pipe, which comprises the following components in parts by weight: 3-15 parts of high-density polyethylene A, 40-90 parts of high-density polyethylene B, 10-40 parts of high-density polyethylene C, 5-20 parts of glass beads, 1-5 parts of a lubricant, 2-10 parts of a toughening agent and 0.1-5 parts of an antioxidant; the melt indexes of the high-density polyethylene A, B and C are different. The high-density polyethylene double-wall corrugated pipe has excellent low-temperature impact resistance and is suitable for the field of outdoor double-wall corrugated pipes in cold seasons or at low temperature.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a high-density polyethylene double-wall corrugated pipe and a preparation method and application thereof.
Background
The double-wall corrugated pipe is a novel pipe with an outer wall with an annular structure and a smooth inner wall, and is mainly applied to the aspects of large-scale water delivery, drainage, pollution discharge, exhaust, subway ventilation, mine ventilation, farmland irrigation and the like without working pressure.
The polyethylene double-wall corrugated pipe is made of polyethylene serving as a main raw material by adopting an extrusion molding process and is mainly used for the field of buried drainage and pollution discharge. The polyethylene double-wall corrugated pipe has the characteristics of strong external pressure resistance, low engineering cost, convenient construction, small inner wall friction coefficient and large flow, and also has good mechanical and chemical properties.
The polyethylene double-wall corrugated pipe produced in the prior art has poor low-temperature impact resistance, is very easy to damage particularly in cold seasons or low-temperature outdoor construction, and is easy to deform under the action of gravity in the long-term use process to influence the service life.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-density polyethylene double-wall corrugated pipe and a preparation method and application thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a high-density polyethylene double-wall corrugated pipe which comprises the following components in parts by weight:
3-15 parts of high-density polyethylene A, 40-90 parts of high-density polyethylene B, 10-40 parts of high-density polyethylene C, 5-20 parts of glass beads, 1-5 parts of a lubricant, 2-10 parts of a toughening agent and 0.1-5 parts of an antioxidant;
the melt index of the high-density polyethylene A is 2-15g/10min;
the melt index of the high-density polyethylene B is 0.2-1g/10min;
the melt index of the high-density polyethylene C is 0.01-0.15g/10min;
the detection condition of the melt index of the high-density polyethylene is 190 ℃/2.16kg.
As a preferred embodiment of the high-density polyethylene double-wall corrugated pipe, the high-density polyethylene A has a melt index of 5-10g/10min; the melt index of the high-density polyethylene B is 0.2-0.5g/10min; the melt index of the high-density polyethylene C is 0.05-0.1g/10min; the detection condition of the melt index of the high-density polyethylene is 190 ℃/2.16kg.
As a preferred embodiment of the high-density polyethylene double-wall corrugated pipe, the high-density polyethylene double-wall corrugated pipe comprises the following components in parts by weight:
5-10 parts of high-density polyethylene A, 50-80 parts of high-density polyethylene B, 15-35 parts of high-density polyethylene C, 5-10 parts of glass beads, 1-3 parts of a lubricant, 2-5 parts of a toughening agent and 0.5-1 part of an antioxidant.
As a preferred embodiment of the high density polyethylene double-wall corrugated pipe of the present invention, the D50 of the glass beads is 15 to 30 μm.
As a preferred embodiment of the high density polyethylene double-wall corrugated pipe of the present invention, the lubricant is at least one of polyethylene wax, calcium stearate, zinc stearate, and stearic acid.
As a preferred embodiment of the high density polyethylene double wall corrugated pipe of the present invention, the toughening agent is diisooctyl phthalate or dioctyl phthalate.
As a preferred embodiment of the high-density polyethylene double-wall corrugated pipe of the present invention, the antioxidant is at least one of antioxidant 1010, antioxidant 1076, and antioxidant 168.
The invention provides a preparation method of a high-density polyethylene double-wall corrugated pipe, which comprises the following steps:
and mixing the high-density polyethylene, the glass beads, the lubricant, the toughening agent and the antioxidant, cooling, extruding and molding to obtain the composite material.
As a preferred embodiment of the preparation method of the high-density polyethylene double-wall corrugated pipe, the rotation speed of mixing is 600-1000r/min, the temperature is 100-120 ℃, and the time is 10-15min.
The invention applies the high-density polyethylene double-wall corrugated pipe to the double-wall corrugated pipe for outdoor use in cold seasons or low temperature.
Compared with the prior art, the invention has the beneficial effects that:
the high-density polyethylene double-wall corrugated pipe adopts high-density polyethylene with different melt indexes as a base material, can give consideration to both the mechanical property and the low-temperature stability of the material under the combined action of the high-density polyethylene double-wall corrugated pipe and an auxiliary agent, and improves the impact property of the material by adding glass beads in a synergistic manner, so that the low-temperature impact resistance of the material is excellent; the preparation method has simple and easy process. The double-wall corrugated pipe is suitable for outdoor use in cold seasons or low temperature.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The test methods used in the examples are all conventional methods unless otherwise specified; the materials, reagents and the like used are commercially available unless otherwise specified. The melt index of the high-density polyethylene is determined by ASTM D1238, and the detection condition is 190 ℃/2.16kg;
the raw materials used for the high density polyethylene double wall corrugated pipe of the following examples and comparative examples are illustrated below, but not limited to:
high density polyethylene HDPE1: the product is KT10000 UE, has a melt index of 8.0g/10min and is purchased from Dow;
high density polyethylene HDPE2: the brand is NG 7000H, the melt index is 0.38g/10min, and the product is purchased from Dow;
high density polyethylene HDPE3: the product is DGDA 2484 NT, the melt index is 0.07g/10min, and the product is purchased from Dow;
glass beads 1, no. NP3-P0, D50 2-4 μm, purchased from Sofitinib;
glass bead 2, the mark is 050-20-A0, D50 is 15-30 μm, purchase from Sofitie;
glass bead 3, the trade mark is 050-40-A0, D50 is 30-45 μm, purchase from Sofitie.
The components (parts by weight) of the high density polyethylene double wall corrugated pipes of examples 1 to 5 and comparative examples 1 to 6 are shown in table 1.
Table 1 composition of high density polyethylene double wall corrugated pipe of examples and comparative examples
The preparation method of the high-density polyethylene double-wall corrugated pipe of the above embodiment and comparative example comprises the following steps:
adding high-density polyethylene, glass beads, dioctyl phthalate, polyethylene wax and antioxidant 1010 into a high-speed mixer, mixing at a rotation speed of 600-1000r/min and a temperature of 100-120 ℃ for 10-15min, cooling after mixing, transferring into a screw extruder, extruding and molding, and thus obtaining the polyethylene-based composite material.
The products of examples 1 to 5 and comparative examples 1 to 6 were sampled and tested for flexural strength according to GBT 9341-2008; testing the tensile strength according to GB/T8804.2-2003; testing the notch impact strength of the cantilever beam according to GB/T1843-2008; the impact resistance at 0 ℃ is tested according to GB/T14152-2001, and the impact frequency of the sample when the sample is dented is recorded.
TABLE 2 results of performance test of examples and comparative examples
As can be seen from table 2, the high density polyethylene double wall corrugated pipes of examples 1 to 5 have high flexural strength, tensile strength, and impact strength, and maintain good impact properties at low temperatures.
In the high density polyethylene double wall corrugated pipes of examples 4 and 5, glass beads having a D50 of 2 to 4 μm and a D50 of 30 to 45 μm were used, respectively, as compared to example 1, so that the bending strength, tensile strength, and impact strength of the test specimens were slightly lower than those of example 1, and the impact resistance under low temperature conditions was slightly lower than that of example 1.
Compared with example 1, in the high density polyethylene double-wall corrugated pipe of comparative examples 1 to 3, only two kinds of high density polyethylene with melt indexes are respectively adopted, so that the bending strength, the tensile strength and the impact strength of a sample are reduced, and the impact performance is poor under the low-temperature condition; in the high density polyethylene double-wall corrugated pipes of comparative examples 4 to 6, only one high density polyethylene having a melt index was used, respectively, so that the flexural strength, tensile strength, and impact strength of the test pieces were lower, and the impact resistance was worse at low temperature.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The high-density polyethylene double-wall corrugated pipe is characterized by comprising the following components in parts by weight:
5-10 parts of high-density polyethylene A, 50-80 parts of high-density polyethylene B, 15-35 parts of high-density polyethylene C, 5-10 parts of glass beads, 1-3 parts of a lubricant, 2-5 parts of a toughening agent and 0.5-1 part of an antioxidant;
the melt index of the high-density polyethylene A is 8g/10min;
the melt index of the high-density polyethylene B is 0.38g/10min;
the melt index of the high-density polyethylene C is 0.07g/10min;
the detection condition of the melt index of the high-density polyethylene is 190 ℃/2.16kg;
the D50 of the glass beads is 15-30 mu m.
2. The high density polyethylene double wall corrugated pipe as claimed in claim 1, wherein the lubricant is at least one of polyethylene wax, calcium stearate, zinc stearate, stearic acid.
3. The high density polyethylene double wall corrugated pipe of claim 1, wherein the toughening agent is diisooctyl phthalate or dioctyl phthalate.
4. The high density polyethylene double wall corrugated pipe as claimed in claim 1, wherein the antioxidant is at least one of antioxidant 1010, antioxidant 1076, and antioxidant 168.
5. A method for preparing the high-density polyethylene double-wall corrugated pipe according to any one of claims 1 to 4, comprising the steps of:
and mixing the high-density polyethylene, the glass beads, the lubricant, the flexibilizer and the antioxidant, cooling, extruding, molding and forming to obtain the high-density polyethylene.
6. The method for preparing a high-density polyethylene double-wall corrugated pipe according to claim 5, wherein the mixing is performed at a rotation speed of 600-1000r/min, at a temperature of 100-120 ℃ and for a time of 10-15min.
7. Use of the high density polyethylene double wall corrugated pipe of any one of claims 1 to 4 in a cold season or low temperature outdoor double wall corrugated pipe.
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| CN202210154506.2A CN114573896B (en) | 2022-02-18 | 2022-02-18 | High-density polyethylene double-wall corrugated pipe and preparation method and application thereof |
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| CN202210154506.2A CN114573896B (en) | 2022-02-18 | 2022-02-18 | High-density polyethylene double-wall corrugated pipe and preparation method and application thereof |
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| CN115505191A (en) * | 2022-10-12 | 2022-12-23 | 日丰企业(天津)有限公司 | Pipeline and preparation method thereof and high-density polyethylene pipeline floating system |
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