CN114573897A - Special material for polyethylene mute drain pipe and preparation method - Google Patents
Special material for polyethylene mute drain pipe and preparation method Download PDFInfo
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- CN114573897A CN114573897A CN202210211959.4A CN202210211959A CN114573897A CN 114573897 A CN114573897 A CN 114573897A CN 202210211959 A CN202210211959 A CN 202210211959A CN 114573897 A CN114573897 A CN 114573897A
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- polyethylene
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
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Abstract
The invention discloses a special material for a polyethylene mute drain pipe and a preparation method thereof, relates to the technical field of drain pipe preparation, solves the technical problems of high brittleness and non-ideal environmental stress cracking resistance of the existing drain pipe, and comprises the following components: active barium sulfate powder, EBS, polyethylene wax, calcium stearate, an antioxidant, maleic anhydride grafted polyethylene, linear low density polyethylene and high density polyethylene; the chemical chain is formed in the system of the invention to improve the adhesion and coupling of the maleic anhydride grafted polyethylene and the materials, in addition, EBS enables the active barium sulfate powder to be more fully dispersed into the maleic anhydride grafted polyethylene, the linear low density polyethylene and the high density polyethylene, thereby improving the speed of the branching stress and the diffusion stress of the materials, and the active barium sulfate powder is of a hydrophobic oleophylic structure, so that the interface combination of the active barium sulfate powder, the linear low density polyethylene and the high density polyethylene is more uniform and firmer, and the strength, the hardness and the modulus of the materials and the environmental stress cracking resistance are superior.
Description
Technical Field
The invention relates to the technical field of high polymer chemistry and polymers, in particular to the technical field of drain pipe preparation.
Background
With the rapid development of the house area industry and modern science and technology, how people build living space and environment where people inhabit themselves puts higher requirements on the design and construction of modern living buildings. Noise generated by drainage of downpipes in toilets and kitchens in places such as high-grade houses, hospitals, hotels and the like in China is always puzzling people. The polyethylene mute drain pipe adopts a three-layer co-extrusion process, the inner layer and the outer layer are respectively made of polyethylene resin, and the middle layer is made of a compact sound insulation material, so that the purpose of reducing noise pollution during flushing is achieved.
At present, two types of mute drainage pipes are available in the market, one type is a PVC hollow wall internal spiral mute pipe, and the other type is a 3SPP mute drainage pipe, wherein the PVC hollow wall internal spiral mute drainage pipe is a drainage groove with a spiral structure designed on the inner wall of a pipe, water flow falls along the drainage groove, impact of the water flow on the pipe wall is reduced, and therefore noise is reduced, and meanwhile noise conduction can be reduced to a certain degree through the hollow wall structure; the 3SPP mute water drainage pipe is made of polypropylene as a basic raw material, the inner layer and the outer layer of polypropylene resin are respectively arranged, the middle layer is made of a compact sound insulation material, and the PVC hollow wall inner spiral mute pipe mainly has the problems of large brittleness of the material and unsatisfactory mute effect; the 3SPP mute water drainage pipe has the main problems of high brittleness and unsatisfactory environmental stress cracking resistance.
Disclosure of Invention
The invention aims to: in order to solve the technical problems of high brittleness and non-ideal environmental stress cracking resistance of the existing drain pipe, the invention provides a special material for a polyethylene mute drain pipe and a preparation method thereof.
The invention specifically adopts the following technical scheme for realizing the purpose: the special material for the polyethylene mute drain pipe comprises the following components in parts by weight: 60-70 parts of active barium sulfate powder, 0.2-0.5 part of EBS, 0.5-2.5 parts of polyethylene wax, 0.2-0.7 part of calcium stearate, 0.1-0.3 part of antioxidant, 2-5 parts of maleic anhydride grafted polyethylene, 3-6 parts of linear low density polyethylene and 15-35 parts of high density polyethylene.
In the technical scheme of the application, the linear low density polyethylene and high density polyethylene materials have excellent shock resistance, in addition, the polyethylene wax has an internal lubricating effect on the linear low density polyethylene and high density polyethylene resin, and the calcium stearate has an external lubricating effect, so that the apparent quality and the production efficiency of extruded products can be effectively improved, in addition, the extrusion shape is reduced due to the addition of the calcium stearate, and the tensile strength is increased; the antioxidant can prevent the special material of the application from oxidative degradation in processing, and can also inhibit the finished product from oxidative discoloration, thereby improving the service time and saving the cost; the maleic anhydride grafted polyethylene is used for the compatibility of active barium sulfate powder, EBS, polyethylene wax, calcium stearate, an antioxidant, linear low-density polyethylene and high-density polyethylene; the EBS enables the active barium sulfate powder to be more fully dispersed in the maleic anhydride grafted polyethylene, the linear low-density polyethylene and the high-density polyethylene, thereby improving the branching stress and the diffusion stress speed of the material and improving the environmental stress cracking resistance of the material.
Preferably, the composition comprises the following components in parts by weight: 65 parts of active barium sulfate powder, 0.35 part of EBS, 1.5 parts of polyethylene wax, 0.45 part of calcium stearate, 0.2 part of antioxidant, 3.5 parts of maleic anhydride grafted polyethylene, 4.5 parts of linear low density polyethylene and 25 parts of high density polyethylene.
Preferably, the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 12-18min (15min), and then placing in a cooling pot to cool to normal temperature.
More preferably, the preparation method of the active barium sulfate powder is as follows: stirring barium sulfate powder in a high-speed mixer, heating to 108 ℃, adding an aluminate coupling agent, stirring for 15min, and then placing in a cooling pot to cool to normal temperature to obtain the barium sulfate powder. Stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃ to exhaust water vapor in the barium sulfate powder, simultaneously stirring to break up agglomerated barium sulfate particles, fully dispersing, adding an aluminate coupling agent, and stirring for 12-18min to facilitate the fully dispersed barium sulfate powder to react with the coupling agent to form a hydrophobic oleophylic structure.
More preferably, the weight ratio of the barium sulfate powder to the aluminate coupling agent is 50:1, the barium sulfate powder is 1200-1300 meshes, and more preferably, the barium sulfate powder is 1250 meshes.
Preferably, the antioxidant is antioxidant 1010, antioxidant 168, antioxidant 1076 or antioxidant 626.
Preferably, the linear low density polyethylene is a metallocene linear low density polyethylene, and the melt index is 0.2-1.0g/10 min.
Preferably, the high density polyethylene is PE100 grade, the melt index is 0.2-0.5g/10min, and the test condition is 190 ℃ and 5 kg.
A preparation method of a special material for a polyethylene mute drain pipe comprises the following steps: adding active barium sulfate powder, EBS, polyethylene wax, calcium stearate, an antioxidant, maleic anhydride grafted polyethylene, linear low-density polyethylene and high-density polyethylene into an internal mixer according to the weight parts, heating and mixing to 192 ℃ for 188-. More preferably, the mixture is heated and mixed to 190 ℃.
In the technical scheme of the application: EBS is N, N' -ethylene bis stearamide.
The invention has the following beneficial effects:
1. according to the technical scheme, the maleic anhydride grafted polyethylene is used for the compatibility of the active barium sulfate powder, the EBS, the polyethylene wax, the calcium stearate, the antioxidant, the linear low-density polyethylene and the high-density polyethylene, and the EBS enables the active barium sulfate powder to be more fully dispersed into the maleic anhydride grafted polyethylene, the linear low-density polyethylene and the high-density polyethylene, so that the branching stress and the diffusion stress speed of the material are improved, and the environmental stress cracking resistance of the material is improved. In addition, the polyethylene wax has an internal lubricating effect on linear low-density polyethylene and high-density polyethylene resin, and the calcium stearate has an external lubricating effect, so that the apparent quality and the production efficiency of extruded products can be effectively improved. The coupling agent is utilized to carry out surface modification treatment on the barium sulfate powder to obtain active barium sulfate powder which is of a hydrophobic oleophylic structure, so that the interface bonding between the active barium sulfate powder and linear low-density polyethylene and high-density polyethylene is more uniform and firmer, the strength, hardness and modulus of the material are improved, and the environmental stress cracking resistance is superior.
2. EBS can fully disperse the active barium sulfate powder in linear low-density polyethylene and high-density polyethylene, and then the dispersity of the active barium sulfate powder in the linear low-density polyethylene and the high-density polyethylene is further improved in a refining mode, so that the system is more uniform, and after the active barium sulfate powder is fully dispersed, the active barium sulfate powder is obtained by performing surface modification treatment on the barium sulfate powder, is of a hydrophobic oleophylic structure, so that the interface combination of the active barium sulfate powder and the linear low-density polyethylene and the interface combination of the active barium sulfate powder and the interface combination of the linear low-density polyethylene and the interface combination of the active barium sulfate powder are more uniform and firmer.
3. According to the method, firstly, the surface modification treatment is carried out on the barium sulfate powder by using an aluminate coupling agent, and then all components are fully mixed by an internal mixer, so that the problems of compatibility and dispersibility between the barium sulfate powder and a high polymer material are well solved;
4. the preparation method is simple, the prepared special material has high tensile strength of about 17.5MPa, proper bending modulus of about 2650MPa and high notch impact strength of about 27kJ/m 2;
5. the application takes linear low-density polyethylene and high-density polyethylene as basic raw materials, utilizes the characteristic of excellent sound insulation effect of barium sulfate powder, simultaneously reacts the barium sulfate powder with a coupling agent, activates the barium sulfate powder to form a hydrophobic oleophylic structure, further improves the dispersibility of the active barium sulfate powder in the linear low-density polyethylene and the high-density polyethylene in an EBS and banburying way, and improves the compatibility with other components, so that the prepared special material has good silence effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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 embodiment provides a special material for a polyethylene mute drain pipe, which comprises the following components in parts by weight: 60 parts of active barium sulfate powder, 0.2 part of EBS, 0.5 part of polyethylene wax, 0.2 part of calcium stearate, 0.1 part of antioxidant 168, 2 parts of maleic anhydride grafted polyethylene, 3 parts of linear low density polyethylene and 15 parts of high density polyethylene; the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 12min, and then cooling to normal temperature in a cooling pot to obtain the barium sulfate powder;
the preparation method of the special material for the polyethylene mute drain pipe comprises the following steps: adding active barium sulfate powder, EBS, polyethylene wax, calcium stearate, an antioxidant 168, maleic anhydride grafted polyethylene, linear low-density polyethylene and high-density polyethylene into an internal mixer according to the weight parts, heating and internally mixing to 188 ℃, then pouring the mixture into a feeding hopper of a single-screw extruder, and extruding and granulating the mixture by the single-screw extruder at the temperature of 140-170 ℃.
Example 2
The embodiment provides a special material for a polyethylene mute drain pipe, which comprises the following components in parts by weight: 65 parts of active barium sulfate powder, 0.35 part of EBS, 1.5 parts of polyethylene wax, 0.45 part of calcium stearate, 0.2 part of antioxidant 626, 3.5 parts of maleic anhydride grafted polyethylene, 4.5 parts of linear low density polyethylene and 25 parts of high density polyethylene; the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 15min, and then cooling to normal temperature in a cooling pot to obtain the barium sulfate powder;
the preparation method of the special material for the polyethylene mute drain pipe is the same as the example 1 except that the special material is heated and banburied to 190 ℃.
Example 3
The embodiment provides a special material for a polyethylene mute drain pipe, which comprises the following components in parts by weight: 70 parts of active barium sulfate powder, 0.5 part of EBS, 2.5 parts of polyethylene wax, 0.7 part of calcium stearate, 0.3 part of antioxidant 1076, 5 parts of maleic anhydride grafted polyethylene, 6 parts of linear low density polyethylene and 35 parts of high density polyethylene; the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 18min, and then cooling to normal temperature in a cooling pot to obtain the barium sulfate powder;
the preparation method of the special material for the polyethylene mute drain pipe is the same as the example 1 except that the temperature is heated and internally mixed to 192 ℃.
Example 4
The embodiment provides a special material for a polyethylene mute drain pipe, which comprises the following components in parts by weight: 62 parts of active barium sulfate powder, 0.3 part of EBS, 1 part of polyethylene wax, 0.4 part of calcium stearate, 0.15 part of antioxidant 168, 3 parts of maleic anhydride grafted polyethylene, 4 parts of linear low density polyethylene and 20 parts of high density polyethylene; the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 15min, and then cooling to normal temperature in a cooling pot to obtain the barium sulfate powder;
the preparation method of the special material for the polyethylene mute drain pipe is as in example 2.
Example 5
The embodiment provides a special material for a polyethylene mute drain pipe, which comprises the following components in parts by weight: 68 parts of active barium sulfate powder, 0.4 part of EBS, 2 parts of polyethylene wax, 0.6 part of calcium stearate, 0.25 part of antioxidant 1010, 4 parts of maleic anhydride grafted polyethylene, 4 parts of linear low-density polyethylene and 30 parts of high-density polyethylene; the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 17min, and then cooling to normal temperature in a cooling pot to obtain the barium sulfate powder;
the preparation method of the special material for the polyethylene mute drain pipe is as in example 2.
In the above embodiment, the linear low density polyethylene is metallocene linear low density polyethylene, and the melt index is 0.2-1.0g/10 min; the high-density polyethylene is PE100 grade, the melt index is 0.2-0.5g/10min, the test condition is 190 ℃, and 5 kg; the weight ratio of the barium sulfate powder to the aluminate coupling agent is 50:1, and the barium sulfate powder is 1250 meshes.
The main test indexes of the above examples 1-5 are shown in table 1, compared with the 3SPP mute drainpipe special material and the polyethylene mute drainpipe special material which is conventionally sold in the market in the field.
The special material for the 3SPP mute drain pipe comprises the following main components: 65 parts of active barium sulfate powder, 0.5 part of EBS, 0.5 part of polypropylene wax, 0.2 part of calcium stearate, 0.2 part of antioxidant 1010, 0.1 part of antioxidant 168 and 33.5 parts of polypropylene copolymer.
As shown in table 1, compared with the 3SPP silent drain pipe special material and the commercially available polyethylene silent drain pipe special material, the polyethylene silent drain pipe special material prepared in examples 1 to 5 of the present application has a suitable bending modulus, and a tensile strength significantly superior to that of the 3SPP silent drain pipe special material and the commercially available polyethylene silent drain pipe special material, which indicates that the environmental stress cracking resistance is good, and the notch impact strength is high, which indicates that the pipe prepared from the polyethylene silent drain pipe special material prepared in examples 1 to 5 has good flexibility and small brittleness.
Claims (8)
1. The special material for the polyethylene mute drain pipe is characterized by comprising the following components in parts by weight: 60-70 parts of active barium sulfate powder, 0.2-0.5 part of EBS, 0.5-2.5 parts of polyethylene wax, 0.2-0.7 part of calcium stearate, 0.1-0.3 part of antioxidant, 2-5 parts of maleic anhydride grafted polyethylene, 3-6 parts of linear low density polyethylene and 15-35 parts of high density polyethylene.
2. The special material for the polyethylene mute drain pipe according to claim 1, which is characterized by comprising the following components in parts by weight: 65 parts of active barium sulfate powder, 0.35 part of EBS, 1.5 parts of polyethylene wax, 0.45 part of calcium stearate, 0.2 part of antioxidant, 3.5 parts of maleic anhydride grafted polyethylene, 4.5 parts of linear low density polyethylene and 25 parts of high density polyethylene.
3. The special material for the polyethylene mute drain pipe according to claim 1 or 2, wherein the preparation method of the active barium sulfate powder comprises the following steps: stirring barium sulfate powder in a high-speed mixer, heating to 105-110 ℃, adding an aluminate coupling agent, stirring for 12-18min, and then cooling in a cooling pot to normal temperature to obtain the barium sulfate powder.
4. The special material for the polyethylene mute drainage pipe as claimed in claim 3, wherein the weight ratio of the barium sulfate powder to the aluminate coupling agent is 50:1, and the barium sulfate powder is 1200-1300 mesh.
5. The special material for the polyethylene mute drain pipe according to claim 1 or 2, wherein the antioxidant is antioxidant 1010, antioxidant 168, antioxidant 1076 or antioxidant 626.
6. The special material for the polyethylene mute drainpipe as claimed in claim 1 or 2, wherein the linear low density polyethylene is metallocene linear low density polyethylene, and the melt index is 0.2-1.0g/10 min.
7. The special material for the polyethylene mute drainpipe as claimed in claim 1 or 2, wherein the high density polyethylene is PE100 grade, the melt index is 0.2-0.5g/10min, and the test condition is 190 ℃ and 5 kg.
8. The preparation method of the special material for the polyethylene mute drain pipe according to any one of claims 1 to 7, which is characterized by comprising the following steps: adding active barium sulfate powder, EBS, polyethylene wax, calcium stearate, an antioxidant, maleic anhydride grafted polyethylene, linear low-density polyethylene and high-density polyethylene into an internal mixer according to the weight parts, heating and mixing to 192 ℃ for 188-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211959.4A CN114573897A (en) | 2022-03-04 | 2022-03-04 | Special material for polyethylene mute drain pipe and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211959.4A CN114573897A (en) | 2022-03-04 | 2022-03-04 | Special material for polyethylene mute drain pipe and preparation method |
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| CN114573897A true CN114573897A (en) | 2022-06-03 |
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| CN202210211959.4A Pending CN114573897A (en) | 2022-03-04 | 2022-03-04 | Special material for polyethylene mute drain pipe and preparation method |
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Citations (7)
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| CN113930002A (en) * | 2021-11-04 | 2022-01-14 | 四川仁智新材料科技有限责任公司 | Special material for buried structural wall drain pipe and preparation method thereof |
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2022
- 2022-03-04 CN CN202210211959.4A patent/CN114573897A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358008A (en) * | 2008-09-11 | 2009-02-04 | 大庆石油管理局 | Preparation method of special material for buried polyethylene drainage pipe |
| CN102040757A (en) * | 2009-10-13 | 2011-05-04 | 湖南振辉管业有限公司 | High-density polyethylene alloy pipe and manufacturing method thereof |
| CN104448465A (en) * | 2014-11-05 | 2015-03-25 | 河南联塑实业有限公司 | PE water feed pipe for non-excavation directional drilling construction and preparation method of PE water feed pipe |
| JP2016217426A (en) * | 2015-05-19 | 2016-12-22 | 積水化学工業株式会社 | Cold/hot water conduit piping system |
| WO2019068882A1 (en) * | 2017-10-06 | 2019-04-11 | Total Research & Technology Feluy | Conductive multilayered pipes made of polyethylene, and process to produce such pipes |
| CN109733036A (en) * | 2018-12-29 | 2019-05-10 | 山东新升实业发展有限责任公司 | It is a kind of to build with service life drainpipe and preparation method thereof |
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