CN112538203A - Polyolefin noise reduction type drain pipe and preparation method thereof - Google Patents
Polyolefin noise reduction type drain pipe and preparation method thereof Download PDFInfo
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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
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- C08L23/06—Polyethene
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- 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
- C08L23/08—Copolymers of ethene
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- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
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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
- F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three 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
Abstract
The invention provides a polyolefin noise reduction type drain pipe which comprises an outer fixing pipe and a noise reduction pipe, wherein the outer fixing pipe comprises a first outer pipe and a first inner pipe which are matched and fixed, and the noise reduction pipe is sleeved in the first inner pipe and is fixedly connected with the inner wall of the first inner pipe; the pipe wall of the noise reduction pipe is provided with a plurality of holes, and the inner wall of the noise reduction pipe is provided with a spiral flow guide ring for noise reduction. The polyolefin noise reduction type drain pipe has good sound insulation and noise reduction functions on the basis of ensuring good strength and toughness; meanwhile, the polyolefin drain pipe is simple in structure and convenient to produce and manufacture.
Description
Technical Field
The invention belongs to the technical field of drainage pipes, and particularly relates to a polyolefin noise reduction type drainage pipe and a preparation method thereof.
Background
The current market drain pipe mainly is stereoplasm polyvinyl chloride drain pipe, cast iron pipe, cement pipe, and these tubular product materials are harder, and the noise absorption effect is relatively poor, and cast iron pipe and cement pipe have been eliminated gradually, and stereoplasm polyvinyl chloride drain pipe has the shortcoming that low temperature toughness is relatively poor. The patent document with the application number of 201821173334.3 discloses a sound-insulation noise-reduction drain pipe which comprises an outer protection pipe and an inner discharge pipe, wherein the outer protection pipe is of a cool ash structure, and a fireproof cotton and a sound-insulation noise-reduction plate are bonded at the interlayer of the outer protection pipe; the sound insulation and noise reduction effects of the drain pipe are improved. However, the drain pipe is troublesome to prepare, complex in process and inconvenient for mass production.
Therefore, it is required to develop a drain pipe which is easy to manufacture and has a good sound insulation effect.
Disclosure of Invention
The invention aims to provide a polyolefin noise reduction type drain pipe which has good sound insulation and noise reduction functions on the basis of ensuring good strength and toughness; and the structure is simple, the preparation is convenient, and the normal production and use are convenient.
In order to solve the technical problems, the invention adopts the technical scheme that: a polyolefin noise reduction type drain pipe comprises an outer fixing pipe and a noise reduction pipe, wherein the outer fixing pipe comprises a first outer pipe and a first inner pipe which are matched and fixed, and the noise reduction pipe is sleeved in the first inner pipe and is fixedly connected with the inner wall of the first inner pipe; the pipe wall of the noise reduction pipe is provided with a plurality of holes, and the inner wall of the noise reduction pipe is provided with a spiral flow guide ring for noise reduction.
In the technical scheme, the polyolefin noise reduction type drain pipe comprises an outer fixed pipe and a noise reduction pipe, and a flow guide ring is arranged inside the noise reduction pipe; the outer fixing pipe has the functions of impact resistance and fixation, and the noise reduction pipe and the flow guide ring are mainly used for reducing noise and isolating noise.
Further, the outer fixing pipe is prepared from the following components in parts by mass: 20-60 parts of high-density polyethylene, 20-60 parts of linear low-density polyethylene, 10-20 parts of polybutylene, 0.1-0.5 part of antioxidant, 0.1-0.5 part of anti-aging agent, 0.1-0.5 part of flame retardant and 1-3 parts of color master batch;
the noise reduction pipe is prepared from the following components in parts by mass: 20-60 parts of linear low-density polyethylene, 20-60 parts of polybutylene, 5-20 parts of a toughening agent, 10-15 parts of modified montmorillonite, 3-5 parts of a compatilizer and 1-3 parts of color master batch.
In the technical scheme, the polyolefin noise reduction type drain pipe comprises an outer fixed pipe and a noise reduction pipe, and a flow guide ring is arranged inside the noise reduction pipe; the outer fixing pipe plays a role in impact resistance and fixation, the noise reduction pipe and the flow guide ring are mainly used for reducing noise and isolating noise, the outer fixing pipe and the noise reduction pipe are prepared by matching with the formula in the invention, so that the functions of all parts can be further enhanced, and the sound insulation and noise reduction capability of the polyolefin noise reduction type drain pipe obtained after combination is enhanced.
Further, the outer fixing pipe is prepared from the following components in parts by mass: 40 parts of high-density polyethylene, 40 parts of linear low-density polyethylene, 20 parts of polybutylene, 0.5 part of antioxidant, 0.5 part of anti-aging agent, 0.5 part of flame retardant and 3 parts of color master batch;
the noise reduction pipe is prepared from the following components in parts by mass: 40 parts of linear low-density polyethylene, 40 parts of polybutylene, 20 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 3 parts of color master batch.
Further, the antioxidant is one or more of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2, 6-di-tert-butyl-p-cresol, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, tris [2, 4-di-tert-butylphenyl ] phosphite or dilauryl thiodipropionate; the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2: 1; the flame retardant is decabromodiphenylethane, octabromoether, decabromodiphenyl ether, tetrabromobisphenol A or hexabromocyclododecane.
Further, the toughening agent is at least one of ethylene-octene copolymer and ethylene-propylene copolymer; the compatilizer is one of maleic anhydride grafted polyolefin elastomer and maleic anhydride grafted polypropylene, and the content of maleic anhydride is 1.5-3.5%.
Furthermore, a plurality of semicircular inserting columns are arranged on the inner wall of the first outer pipe, inserting grooves matched with the semicircular inserting columns are formed in the outer wall of the first inner pipe, and the first outer pipe and the first inner pipe are inserted into the inserting grooves through the inserting columns to be fixed.
Further, the deflector ring is made of rubber.
The second purpose of the invention is to provide a preparation method of the polyolefin noise reduction type drain pipe, the polyolefin noise reduction type drain pipe prepared by the preparation method has good sound insulation and noise reduction performance, and the strength and toughness of the drain pipe prepared by the preparation method meet the standards and can be normally used.
In order to achieve the purpose, the technical scheme adopted by the invention is that the preparation method of the polyolefin noise reduction type drain pipe comprises the following steps:
1) preparing an outer fixing tube: firstly, respectively preparing a first outer pipe and a first inner pipe which are matched with each other; splicing and fixing the first outer pipe and the first inner pipe, and welding the beam ends to obtain an outer fixing pipe;
2) preparing a noise reduction pipe: extruding a pipe by using an extruder, and processing the prepared pipe to form a plurality of holes on the pipe wall of the pipe, so as to prepare the noise reduction pipe;
3) preparing a flow guide ring;
4) preparing the polyolefin noise reduction type drain pipe in a combined manner: sleeving the flow guide ring prepared in the step 3) in the noise reduction pipe in the step 2), and welding and fixing two ends of the flow guide ring and the inner wall of the noise reduction pipe; and then inserting the noise reduction pipe into the outer fixing pipe prepared in the step 1), and welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe respectively.
A preparation method of a polyolefin noise reduction type drain pipe comprises the following steps:
1) preparing an outer fixing tube: firstly, stirring high-density polyethylene, linear low-density polyethylene, polybutylene, an antioxidant, an anti-aging agent, a flame retardant and color master batches to uniformly mix the high-density polyethylene, the linear low-density polyethylene, the polybutylene, the antioxidant, the anti-aging agent, the flame retardant and the color master batches; then adding the mixture into different extruders for extrusion to respectively prepare a first outer pipe and a first inner pipe; splicing and fixing the first outer pipe and the first inner pipe, and welding two end parts to obtain an outer fixed pipe;
2) preparing a noise reduction pipe: stirring linear low-density polyethylene, polybutylene, a toughening agent, modified montmorillonite, a compatilizer and color master batch to uniformly mix the materials; then adding the mixture into an extruder for extrusion; then processing the prepared pipe to form a plurality of holes on the pipe wall, namely preparing the noise reduction pipe;
3) making spiral guide rings by using rubber;
4) preparing the polyolefin noise reduction type drain pipe in a combined manner: sleeving the flow guide ring prepared in the step 3) in the noise reduction pipe in the step 2), and welding and fixing two ends of the flow guide ring and the inner wall of the noise reduction pipe; and then inserting the noise reduction pipe into the outer fixing pipe prepared in the step 1), and welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe respectively.
Further, the total thickness of the outer fixing pipe is 1cm, and the thickness of the noise reduction pipe is 0.5 mm.
The invention has the advantages and positive effects that:
1. the polyolefin noise reduction type drain pipe comprises an outer fixed pipe and a noise reduction pipe, wherein a flow guide ring is arranged inside the noise reduction pipe; the outer fixing pipe plays a role in impact resistance and fixation, the noise reduction pipe and the flow guide ring are mainly used for reducing noise and isolating noise, and the outer fixing pipe and the noise reduction pipe are prepared by matching with the formula in the invention, so that the functions of all parts can be further enhanced, and the sound insulation and noise reduction capability of the polyolefin noise reduction type drain pipe obtained after combination is enhanced; in addition, the prepared polyolefin noise reduction drain pipe also has good toughness and strength and good performance.
2. The polyolefin noise reduction type drain pipe is simple in structure, simple and easy to operate in the preparation method, convenient to produce and capable of being produced and used in batches.
Drawings
FIG. 1 is a schematic structural view of a polyolefin noise reduction type drain pipe according to the present invention;
FIG. 2 is a cross-sectional view of a polyolefin noise reduction type drain pipe of the present invention;
FIG. 3 is a schematic structural diagram of a first outer pipe of a polyolefin noise reduction type drain pipe according to the present invention;
FIG. 4 is a schematic view showing the structure of a first inner pipe of a polyolefin noise reduction type drain pipe according to the present invention;
FIG. 5 is a schematic structural view of a noise reduction pipe in a polyolefin noise reduction type drain pipe according to the present invention;
in the figure:
1-an outer fixed pipe, 11-a first outer pipe, 111-an inserting column, 12-a first inner pipe and 121-an inserting groove; 2-noise reduction pipe, 21-hole, 22-guide ring.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
A polyolefin noise reduction type drain pipe comprises an outer fixing pipe 1 and a noise reduction pipe 2, wherein the outer fixing pipe 1 comprises a first outer pipe 11 and a first inner pipe 12 which are matched and fixed, and the noise reduction pipe 2 is sleeved in the first inner pipe 12 and is fixedly connected with the inner wall of the first inner pipe 12; the pipe wall of the noise reduction pipe 2 is provided with a plurality of holes 21, and the inner wall of the noise reduction pipe 2 is provided with a spiral guide ring 22 for noise reduction; set up outer fixed pipe 1 into assorted first outer tube 11 and first inner tube 12 and be convenient for cooperate fixedly with both, it is provided with a plurality of hole 21 on 2 to fall the pipe of making an uproar, it adsorbs the sound of impact to be convenient for the rivers through the time, thereby reach the purpose of noise reduction, set up spiral helicine water conservancy diversion ring 22, rivers are through in the pipeline, advance along with water conservancy diversion ring 22 spiral, can reduce the direct impact force of rivers, and then reduce the produced sound of rivers flow, make this polyolefin fall the type of making an uproar drain pipe's sound insulating ability further strengthen.
The outer fixing pipe 1 is prepared from the following components in parts by weight: 20-60 parts of high-density polyethylene, 20-60 parts of linear low-density polyethylene, 10-20 parts of polybutylene, 0.1-0.5 part of antioxidant, 0.1-0.5 part of anti-aging agent, 0.1-0.5 part of flame retardant and 1-3 parts of color master batch; the outer fixing pipe 1 produced by the formula has good impact resistance and strength, so that the normal performance of the prepared polyolefin noise reduction type drain pipe can be ensured.
The noise reduction pipe 2 is prepared from the following components in parts by mass: 20-60 parts of linear low-density polyethylene, 20-60 parts of polybutylene, 5-20 parts of a toughening agent, 10-15 parts of modified montmorillonite, 3-5 parts of a compatilizer and 1-3 parts of color master batch. The noise reduction pipe produced by the formula has good noise adsorption capacity, and the sound insulation and noise reduction capacity of the prepared polyolefin noise reduction type drain pipe can be further enhanced.
Wherein the antioxidant is one or more of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2, 6-di-tert-butyl-p-cresol, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, tris [2, 4-di-tert-butylphenyl ] phosphite or dilauryl thiodipropionate; the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2: 1; the flame retardant is decabromodiphenylethane, octabromoether, decabromodiphenyl ether, tetrabromobisphenol A or hexabromocyclododecane. The toughening agent is at least one of ethylene-octene copolymer and ethylene-propylene copolymer; the compatilizer is one of maleic anhydride grafted polyolefin elastomer and maleic anhydride grafted polypropylene, and the content of maleic anhydride is 1.5-3.5%.
In addition, a plurality of semicircular inserting columns 111 are arranged on the inner wall of the first outer pipe 11, inserting grooves 121 matched with the semicircular inserting columns 111 are arranged on the outer wall of the first inner pipe 12, and the first outer pipe 11 and the first inner pipe 12 are inserted into the inserting grooves 121 through the inserting columns 111 to be fixed. The deflector ring 22 is made of rubber.
A preparation method of a polyolefin noise reduction type drain pipe comprises the following steps:
1) preparing an outer fixing tube 1: firstly, stirring high-density polyethylene, linear low-density polyethylene, polybutylene, an antioxidant, an anti-aging agent, a flame retardant and color master batches to uniformly mix the high-density polyethylene, the linear low-density polyethylene, the polybutylene, the antioxidant, the anti-aging agent, the flame retardant and the color master batches; then adding the mixture into different extruders for extrusion to respectively prepare a first outer pipe 11 and a first inner pipe 12; splicing and fixing the first outer pipe 11 and the first inner pipe 12, and welding two end parts to obtain an outer fixing pipe 1;
2) preparing a noise reduction pipe 2: stirring linear low-density polyethylene, polybutylene, a toughening agent, modified montmorillonite, a compatilizer and color master batch to uniformly mix the materials; then adding the mixture into an extruder for extrusion; then, processing the prepared pipe to form a plurality of holes 21 on the pipe wall, thus obtaining the noise reduction pipe 2;
3) a spiral guide ring 22 is made of rubber;
4) preparing the polyolefin noise reduction type drain pipe in a combined manner: sleeving the guide ring 22 prepared in the step 3) in the noise reduction pipe 2 in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe 2; and then inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12 respectively.
Wherein, the total thickness of outer fixed pipe is 1cm, the thickness of noise reduction pipe 2 is 0.5 mm.
Example 1:
1) adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion to respectively prepare a first outer pipe 11 with a semicircular inserting column 111 and a first inner pipe 12 with an inserting groove 121; then, inserting the prepared first outer pipe 11 and the first inner pipe 12, and welding and fixing two ends of the first outer pipe and the first inner pipe to form an outer fixing pipe 1; wherein the wall thickness of the outer fixed pipe 1 is 1 cm;
2) adding 20 parts of linear low-density polyethylene, 20 parts of polybutylene, 5 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion; then, processing the prepared pipe to form a plurality of holes 21 on the pipe wall, thus obtaining the noise reduction pipe 2; wherein the wall thickness of the noise reduction pipe 2 is 0.5 cm;
3) a spiral guide ring 22 is made of rubber;
4) sleeving the guide ring 22 prepared in the step 3) in the noise reduction pipe 2 prepared in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe 2; then inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and respectively welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12; the noise reduction type drain pipe is manufactured.
In the embodiment, the antioxidant in the step 1) is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant is decabromodiphenylethane; the toughening agent in the step 2) is an ethylene-octene copolymer, and the compatilizer is a maleic anhydride grafted polyolefin elastomer.
The preparation method and the components of the embodiments 2 to 5 are the same as the embodiment 1, only the content of each component is different, and the content of the components of the embodiments 2 to 5 is shown in the table 1:
table 1 component contents of example 2 to example 5
The preparation methods and the contents of the components of the examples 6 and 7 are the same as those of the example 2, except that:
in example 6, the antioxidant in step 1) was tris [2, 4-di-tert-butylphenyl ] phosphite, the anti-aging agent was resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant was octabromoether; the toughening agent in the step 2) is an ethylene-propylene copolymer, and the compatilizer is maleic anhydride grafted polypropylene.
In example 7, the antioxidant in step 1) is dilauryl thiodipropionate, the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant is decabromodiphenylethane; the toughening agent in the step 2) is an ethylene-octene copolymer, and the compatilizer is maleic anhydride grafted polypropylene.
Comparative example 1:
comparative example 1 an outer fixed pipe 1 with a total wall thickness of 1.0cm is prepared by adopting the formula and the method in the step 1) in the example 1, a noise reduction pipe 2 with a hole and a wall thickness of 0.5cm is prepared by adopting the formula in the step 1) in the example 1 and the method in the step 2), a guide ring 22 is prepared by adopting the method in the step 3) in the example 1, and the prepared outer fixed pipe 1, the noise reduction pipe 2 and the guide ring 22 are assembled by adopting the method in the step 4) to prepare a final drain pipe.
Comparative example 1 is compared with example 1, except that the outer fixed pipe 1 and the noise reduction pipe 2 in comparative example 1 are both made of the material of the outer fixed pipe 1 in example 1.
The specific procedure for comparative example 1 was as follows:
1) adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion to respectively prepare a first outer pipe 11 with a semicircular inserting column 111 and a first inner pipe 12 with an inserting groove 121; then, inserting the prepared first outer pipe 11 and the first inner pipe 12, and welding and fixing two ends of the first outer pipe and the first inner pipe at the same time; thereby manufacturing the drain pipe with the total wall thickness of 1.0 cm.
2) Adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion; then, processing the prepared pipe to form a plurality of holes 21 on the pipe wall, thus obtaining the noise reduction pipe 2; wherein the wall thickness of the noise reduction pipe 2 is 0.5 cm;
3) a spiral guide ring 22 is made of rubber;
4) sleeving the guide ring 22 prepared in the step 3) in the noise reduction pipe 2 prepared in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe 2; then inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and respectively welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12; the drain pipe is manufactured.
Wherein the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant is decabromodiphenylethane.
Comparative example 2:
in comparative example 1, the outer fixed pipe 1 with the total wall thickness of 1.0cm is prepared by adopting the formula of the step 2) in the example 1 and the method in the step 1), the noise reduction pipe 2 with the hole with the wall thickness of 0.5cm is prepared by adopting the formula of the step 2) in the example 1 and the method in the step 1), the guide ring 22 is prepared by adopting the method in the step 3) in the example 1, and the prepared outer fixed pipe 1, the noise reduction pipe 2 and the guide ring 22 are assembled by adopting the method in the step 4) to prepare the final drain pipe.
Comparative example 2 is compared with example 1, except that the outer fixed pipe 1 and the noise reduction pipe 2 in comparative example 1 are both made of the material of the noise reduction pipe 2 in example 1.
The specific procedure for comparative example 2 was as follows:
1) adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion to respectively prepare a first outer pipe 11 with a semicircular inserting column 111 and a first inner pipe 12 with an inserting groove 121; then, inserting the prepared first outer pipe 11 and the first inner pipe 12, and welding and fixing two ends of the first outer pipe and the first inner pipe at the same time; further preparing a drain pipe with the total wall thickness of 1.0 cm;
2) adding 20 parts of linear low-density polyethylene, 20 parts of polybutylene, 5 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion; the drain pipe with the wall thickness of 1.5cm is prepared.
3) A spiral guide ring 22 is made of rubber;
4) sleeving the guide ring 22 prepared in the step 3) in the noise reduction pipe 2 prepared in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe 2; then inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and respectively welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12; the drain pipe is manufactured.
Wherein, the toughening agent is an ethylene-octene copolymer, and the compatilizer is a maleic anhydride grafted polyolefin elastomer.
Comparative example 3:
comparative example 3 a pipe with a total wall thickness of 1.0cm was produced using the formulation and method of step 1) of example 1, and a noise reduction pipe 2 with a total wall thickness of 0.5cm was produced using the formulation and method of step 2) of example 1; then, the noise reduction pipe 2 and the outer fixed pipe 1 are combined by the method of the step 4) in the embodiment 1 to prepare the drain pipe.
Comparative example 3 in contrast to example 1, comparative example 3 does not include deflector ring 22.
The specific procedure for comparative example 3 was as follows:
1) adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion to respectively prepare a first outer pipe 11 with a semicircular inserting column 111 and a first inner pipe 12 with an inserting groove 121; then, inserting the prepared first outer pipe 11 and the first inner pipe 12, and welding and fixing two ends of the first outer pipe and the first inner pipe to form an outer fixing pipe 1; wherein the wall thickness of the outer fixed pipe 1 is 1 cm;
2) adding 20 parts of linear low-density polyethylene, 20 parts of polybutylene, 5 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion; then, processing the prepared pipe to form a plurality of holes 21 on the pipe wall, thus obtaining the noise reduction pipe 2; wherein the wall thickness of the noise reduction pipe 2 is 0.5 cm;
3) inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and respectively welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12; the noise reduction type drain pipe is manufactured.
In the embodiment, the antioxidant in the step 1) is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant is decabromodiphenylethane; the toughening agent in the step 2) is an ethylene-octene copolymer, and the compatilizer is a maleic anhydride grafted polyolefin elastomer.
Comparative example 4:
comparative example 4 an external fixation pipe 1 after 1cm was manufactured by the method of step 1) of example 1, a noise reduction pipe 2 without holes after 0.5cm was manufactured by the method of step 2) of example 1, a deflector ring 22 was manufactured by the method of step 3) of example 1, and then a drain pipe with a deflector ring 22 was finally manufactured by the method of step 4).
Comparative example 4 is different from example 1 in that the noise reduction pipe 2 in the drain pipe in comparative example 5 has no hole therein.
The specific procedure for comparative example 4 was as follows:
1) adding 20 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of polybutene, 0.1 part of antioxidant, 0.1 part of anti-aging agent, 0.1 part of flame retardant and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion to respectively prepare a first outer pipe 11 with a semicircular inserting column 111 and a first inner pipe 12 with an inserting groove 121; then, inserting the prepared first outer pipe 11 and the first inner pipe 12, and welding and fixing two ends of the first outer pipe and the first inner pipe to form an outer fixing pipe 1; wherein the wall thickness of the outer fixed pipe 1 is 1 cm;
2) adding 20 parts of linear low-density polyethylene, 20 parts of polybutylene, 5 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 1 part of color master batch into a mixer, and stirring to uniformly mix the components; then adding the mixture into an extruder for extrusion; manufacturing a noise reduction pipe 2; wherein the wall thickness of the noise reduction pipe 2 is 0.5 cm;
3) a spiral guide ring 22 is made of rubber;
4) sleeving the guide ring 22 prepared in the step 3) in the noise reduction pipe 2 prepared in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe 2; then inserting the noise reduction pipe 2 into the outer fixing pipe 1 prepared in the step 1), and respectively welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe 12; the drain pipe is manufactured.
Wherein the antioxidant in the step 1) is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2:1, and the flame retardant is decabromodiphenylethane; the toughening agent in the step 2) is an ethylene-octene copolymer, and the compatilizer is a maleic anhydride grafted polyolefin elastomer.
Experimental example 1:
wherein, the inner diameters of the drainage pipes manufactured in examples 1 to 7 and comparative examples 1 to 5 are the same, and the drainage pipes manufactured in the above examples and comparative examples are tested for their performances, and the test results are shown in table 2:
TABLE 2 examples and comparative Performance test data tables
As can be seen from the experimental data in Table 2, the polyolefin noise reduction type drain pipe of the present invention has good strength and impact resistance, has good toughness, and can be used normally.
Experimental example 2:
the drainage pipes produced in examples 1 to 7 and comparative examples 1 to 5 were subjected to a sound insulation test, and the test results are shown in table 3:
wherein, the sound insulation test adopts a BSWAVS302USB dual-channel analyzer produced by Beijing Vocal teletechnology limited; the measurements were made with reference to ISOR140-1, ISOR140-170 standards for sound insulation measurements of building and construction components. The test backing is air, an A weighting network is selected, and the sound pressure level is a pink background noise source of 80 dB; the volume of the mute box body is as follows: 1000mm × 1000mm × 1000 mm; the sampling frequency of sound is "48000"; the extraction rate selection bit takes '1'; the fast fourier transform sample number takes "2048". The data measurement adopts a common 1/3 octave, and the data processing adopts the connection mode of acoustic software of SpetraLAB, a prestige VS302USB system, an omnidirectional sound source and a power amplification system.
The sound insulation quality law means that the sound insulation quantity of a single-layer sound insulation material is in direct proportion to the common logarithm of the mass per unit area. R ═ 20 × lg (m × f) -47.5; in the formula: r is the sound insulation quantity of a certain frequency, m is the material surface density, and f is the frequency.
TABLE 3 test data of sound insulation properties of examples and comparative examples
From the experimental data in table 3, it can be seen that:
the experimental data of comparative examples 1 to 7 show that the polyolefin noise reduction type drain pipe of the present invention has a sound insulation amount of 50dB or more, and has good sound insulation and noise reduction effects.
Comparing example 1 with comparative example 1 and comparative example 2, the sound insulation amount of the polyolefin noise reduction type drain pipe of example 1 is much larger than that of the drain pipes of examples 1 and 2, and thus it can be seen that the polyolefin noise reduction type drain pipe prepared by the formulation of the present invention has a good sound insulation effect, which is better than that of the drain pipe prepared by the formulation of the outer fixed pipe 1 or the noise reduction pipe 2 alone.
Comparing example 1 with comparative example 3, it can be seen that the sound insulation amount of the drainage pipe prepared in example 1 is much larger than that of the drainage pipe of comparative example 3; therefore, the guide ring is arranged on the inner wall of the pipe of the drain pipe, so that noise can be reduced to a certain extent, and the sound insulation and noise reduction functions of the drain pipe are enhanced, and therefore, the guide ring is arranged to have a certain beneficial effect.
Comparing comparative example 4 with example 1, the sound insulation amount of the polyolefin noise reduction type drain pipe of example 1 is greater than that of the drain pipe of comparative example 5, therefore, the noise reduction pipe is provided with a plurality of holes, and the sound insulation and noise reduction effects can be achieved.
According to the experimental data, the polyolefin noise reduction type drain pipe prepared by the method has good sound insulation and noise reduction performances, and has good strength and impact resistance, so that the polyolefin noise reduction type drain pipe is convenient to use normally. The formula of the invention is matched with a corresponding structure, so that the sound insulation effect of the polyolefin noise reduction type drain pipe is better.
Although the embodiments of the present invention have been described in detail, the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a type of making an uproar drain pipe falls in polyolefin which characterized in that: the noise reduction pipe comprises an outer fixed pipe (1) and a noise reduction pipe (2), wherein the outer fixed pipe (1) comprises a first outer pipe (11) and a first inner pipe (12) which are matched and fixed, and the noise reduction pipe (2) is sleeved in the first inner pipe (12) and is fixedly connected with the inner wall of the first inner pipe (12); the pipe wall of the noise reduction pipe (2) is provided with a plurality of holes (21), and the inner wall of the noise reduction pipe (2) is provided with a spiral flow guide ring (22) for noise reduction.
2. The polyolefin noise reduction drain pipe of claim 1, wherein: the outer fixing pipe (1) is prepared from the following components in parts by mass: 20-60 parts of high-density polyethylene, 20-60 parts of linear low-density polyethylene, 10-20 parts of polybutylene, 0.1-0.5 part of antioxidant, 0.1-0.5 part of anti-aging agent, 0.1-0.5 part of flame retardant and 1-3 parts of color master batch;
the noise reduction pipe (2) is prepared from the following components in parts by mass: 20-60 parts of linear low-density polyethylene, 20-60 parts of polybutylene, 5-20 parts of a toughening agent, 10-15 parts of modified montmorillonite, 3-5 parts of a compatilizer and 1-3 parts of color master batch.
3. The polyolefin noise reduction drain pipe of claim 2, wherein: the outer fixing pipe (1) is prepared from the following components in parts by mass: 40 parts of high-density polyethylene, 40 parts of linear low-density polyethylene, 20 parts of polybutylene, 0.5 part of antioxidant, 0.5 part of anti-aging agent, 0.5 part of flame retardant and 3 parts of color master batch;
the noise reduction pipe (2) is prepared from the following components in parts by mass: 40 parts of linear low-density polyethylene, 40 parts of polybutylene, 20 parts of a toughening agent, 10 parts of modified montmorillonite, 3 parts of a compatilizer and 3 parts of color master batch.
4. The polyolefin noise reduction type drain pipe according to claim 2 or 3, wherein: the antioxidant is one or more of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2, 6-di-tert-butyl-p-cresol, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, tris [2, 4-di-tert-butylphenyl ] phosphite or dilauryl thiodipropionate; the anti-aging agent is resorcinol monobenzoate and 4-benzoyloxy-2, 2,6, 6-tetramethylpiperidine in a mass fraction ratio of 2: 1; the flame retardant is decabromodiphenylethane, octabromoether, decabromodiphenyl ether, tetrabromobisphenol A or hexabromocyclododecane.
5. The polyolefin noise reduction drain pipe of claim 4, wherein: the toughening agent is at least one of ethylene-octene copolymer and ethylene-propylene copolymer; the compatilizer is one of maleic anhydride grafted polyolefin elastomer and maleic anhydride grafted polypropylene, and the content of maleic anhydride is 1.5-3.5%.
6. The polyolefin noise reduction drain pipe of claim 1, wherein: the inner wall of the first outer pipe (11) is provided with a plurality of semicircular inserting columns (111), the outer wall of the first inner pipe (12) is provided with inserting grooves (121) matched with the semicircular inserting columns (111), and the first outer pipe (11) and the first inner pipe (12) are inserted into the inserting grooves (121) through the inserting columns (111) to be fixed.
7. The polyolefin noise reduction drain pipe of claim 1, wherein: the deflector ring (22) is made of rubber.
8. A method of making a polyolefin noise-reducing drain pipe according to any of claims 1-7, wherein: the method comprises the following steps:
1) preparing an external fixing tube (1): firstly, respectively preparing a first outer pipe (11) and a first inner pipe (12) which are matched with each other; secondly, the first outer pipe (11) and the first inner pipe (12) are spliced and fixed, and the beam ends are welded, so that the outer fixing pipe (1) is manufactured;
2) preparing the noise reduction pipe (2): extruding a pipe by using an extruder, and processing the prepared pipe to form a plurality of holes on the pipe wall of the pipe, so as to prepare the noise reduction pipe (2);
3) preparing a guide ring (22);
4) preparing the polyolefin noise reduction type drain pipe in a combined manner: sleeving the guide ring (22) prepared in the step 3) in the noise reduction pipe (2) in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe (2); and then inserting the noise reduction pipe (2) into the outer fixing pipe (1) prepared in the step 1), and welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe (12) respectively.
9. The method for preparing polyolefin noise reduction type drain pipe according to claim 8, wherein: the method comprises the following steps:
1) preparing an external fixing tube (1): firstly, stirring high-density polyethylene, linear low-density polyethylene, polybutylene, an antioxidant, an anti-aging agent, a flame retardant and color master batches to uniformly mix the high-density polyethylene, the linear low-density polyethylene, the polybutylene, the antioxidant, the anti-aging agent, the flame retardant and the color master batches; then adding the mixture into different extruders for extrusion to respectively prepare a first outer pipe (11) and a first inner pipe (12); splicing and fixing the first outer pipe (11) and the first inner pipe (12), and welding two end parts to obtain an outer fixing pipe (1);
2) preparing the noise reduction pipe (2): stirring linear low-density polyethylene, polybutylene, a toughening agent, modified montmorillonite, a compatilizer and color master batch to uniformly mix the materials; then adding the mixture into an extruder for extrusion; then, processing the prepared pipe to form a plurality of holes on the pipe wall, thus obtaining the noise reduction pipe (2);
3) a spiral diversion ring (22) is made of rubber;
4) preparing the polyolefin noise reduction type drain pipe in a combined manner: sleeving the guide ring (22) prepared in the step 3) in the noise reduction pipe (2) in the step 2), and welding and fixing two ends of the guide ring and the inner wall of the noise reduction pipe (2); and then inserting the noise reduction pipe (2) into the outer fixing pipe (1) prepared in the step 1), and welding and fixing two ends of the noise reduction pipe with the inner wall of the first inner pipe (12) respectively.
10. A polyolefin noise reduction type drain pipe according to claim 8 or 9, wherein: the total thickness of the outer fixing pipe is 1cm, and the thickness of the noise reduction pipe (2) is 0.5 mm.
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Address after: No.58, Caiyun East Street, Hangu modern industrial zone, Binhai New Area Development Zone, Tianjin Applicant after: Ad pipeline (Tianjin) Co.,Ltd. Address before: No.58, Caiyun East Street, Hangu modern industrial zone, Binhai New Area Development Zone, Tianjin Applicant before: TIANJIN YONGGAO PLASTIC INDUSTRY DEVELOPMENT CO.,LTD. |
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