CN110066449A - A kind of HDPE internal-rib reinforced pipe and preparation method thereof - Google Patents
A kind of HDPE internal-rib reinforced pipe and preparation method thereof Download PDFInfo
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- 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
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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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Abstract
The invention discloses a kind of HDPE internal-rib reinforced pipes and preparation method thereof, including following raw material and its weight fraction: 100-150 mass parts of high density polyethylene (HDPE)；20-45 mass parts of graphene；15-25 mass parts of talcum powder；15-20 mass parts of nano-titanium dioxide；Coupling agent is 4-5 mass parts；Antioxidant is 3-6 mass parts；Antistatic agent is 3-4 mass parts；Synergist is 2-5 mass parts；Dispersing agent is 1-2 mass parts；Flocculant is 3-6 mass parts and stabilizer is 4-7 mass parts.Invention enhances the stability of structure in HDPE pipe use process, avoid the phenomenon that HDPE pipe fractures when in use, extend the service life of HDPE pipe, and also improve uvioresistant and thermal conductivity in HDPE pipe use process, speed when HDPE tube extrusion molding is accelerated, occurs the probability deformed when reducing HDPE tube extrusion molding.
Description
Technical field
The present invention relates to pipe technology field, specially a kind of HDPE internal-rib reinforced pipe and preparation method thereof.
Background technique
High density polyethylene (HDPE) (HDPE) be white powder or granular product it is nontoxic, it is tasteless, crystallinity be 80%~
90%, softening point is 125~l35 DEG C, using temperature up to 100 DEG C；Hardness, tensile strength and creep properties are better than low density polyethylene
Alkene；Wearability, electrical insulating property, toughness and cold resistance are preferable；Chemical stability is good, at room temperature, insoluble in any organic
Solvent, the corrosion of acid and alkali resistance and various salts；Film is small to the permeability of vapor and air, and water imbibition is low；Ageing-resistant performance
Difference, environmental stress crack resistance can be such that its performance declines not as good as low density polyethylene (LDPE), especially thermal oxidation, so in resin
People's antioxidant and ultraviolet absorbing agent etc. must be added to improve the deficiency of this respect.Density polyethylene film with high is warm under stress condition
Deformation temperature is lower, when application it is noted that.
Currently, there is also the places of some shortcomings for existing HDPE pipe, such as；It is tied in existing HDPE pipe use process
The stability of structure is poor, and HDPE pipe is easy to appear the phenomenon that fractureing after prolonged use, and shorten HDPE pipe uses the longevity
Life, and uvioresistant in HDPE pipe use process and thermal conductivity are weaker, speed when existing HHDPE tube extrusion molding
It is slow, occur the probability deformed when improving HDPE tube extrusion molding.
Summary of the invention
The purpose of the present invention is to provide a kind of HDPE internal-rib reinforced pipe and preparation method thereof, solves institute in background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of HDPE internal-rib reinforced pipe and preparation method thereof,
Including following raw material and its weight fraction: 100-150 mass parts of high density polyethylene (HDPE)；20-45 mass parts of graphene；Talcum powder
15-25 mass parts；15-20 mass parts of nano-titanium dioxide；Coupling agent is 4-5 mass parts；Antioxidant is 3-6 mass parts；
Antistatic agent is 3-4 mass parts；Synergist is 2-5 mass parts；Dispersing agent is 1-2 mass parts；Flocculant is 3-6 mass parts
It is 4-7 mass parts with stabilizer.
As a kind of preferred embodiment of the invention, the HDPE internal-rib reinforced pipe, including following raw material and its again
Measure score: 150 mass parts of high density polyethylene (HDPE)；35 mass parts of graphene；20 mass parts of talcum powder；17 mass of nano-titanium dioxide
Part；Coupling agent is 5 mass parts；Antioxidant is 4 mass parts；Antistatic agent is 3 mass parts；Synergist is 2 mass parts；Dispersing agent is
2 mass parts；Flocculant is 5 mass parts and stabilizer is 6 mass parts.
As a kind of preferred embodiment of the invention, the HDPE internal-rib reinforced pipe, including following raw material and its again
Measure score: 150 mass parts of high density polyethylene (HDPE)；20 mass parts of talcum powder；Coupling agent is 5 mass parts；Antioxidant is 4 mass parts；
Antistatic agent is 3 mass parts；Synergist is 2 mass parts；Dispersing agent is 2 mass parts and stabilizer is 6 mass parts.
As a kind of preferred embodiment of the invention, the production method of the HDPE internal-rib reinforced pipe, making step
It is as follows:
A. above-mentioned raw materials are weighed according to parts by weight first, then again by weighed graphene, talcum powder, nanometer two
Titanium oxide, coupling agent and dispersing agent are added in high-speed mixer, are heated to 70-80 DEG C, mix 30min, obtain mixed material A；
B. after the completion of step a, then high density polyethylene (HDPE), synergist and antioxidant is added to the mixer, is uniformly mixed,
It is then added in the resulting mixed material A of step a, is then mixed again, obtain mixed material B；
C. after the completion of step b, then antistatic agent, flocculant and synergist are put into the mixing for filling mixed material B
In machine, then suitable water is added to be mixed again, incorporation time is 20~30min, and temperature is maintained at 55~65 DEG C, revolving speed 750
~930r/min obtains mixed material C；
D. after the completion of step c, the mixed material C prepared is put into granulation machine and is pelletized, prilling temperature is
45~55 DEG C, engine speed is about 250~320r/min, and the feed particles made are then put into double screw extruder again
The middle extrusion molding for carrying out pipeline, prilling temperature is at 145~165 DEG C；
E. after the completion of step d, then the pipeline prepared cooled down, is then cut according still further to corresponding size
It cuts.
As a kind of preferred embodiment of the invention, the graphene mainly includes following raw material: glass fibre sticks
Soil, laccase, poly- glutaric acid propylene glycol ester, tripropylene glycol butyl ether and chloroacetyl acetacetic ester are made.
As a kind of preferred embodiment of the invention, the antioxidant is selected from N, N '-DPD di p phenylenediamine, thio dipropyl
Sour octadecyl ester, pentaerythritol ester, dilauryl thiodipropionate or 1, one or more of 1,3- tri- butane.
As a kind of preferred embodiment of the invention, the dispersing agent is selected from polyethylene wax, oxidized polyethylene wax, modeling
Change one or more of polyethylene wax, poly alpha methylstyrene or white oil.
As a kind of preferred embodiment of the invention, the flocculant mainly includes following raw material: poly-aluminum ferric chloride sulfate
Solution, formic acid, polyamines, catalyst, sodium hydroxide, chitosan, hydrochloric acid and glutaraldehyde are made.
As a kind of preferred embodiment of the invention, double screw extruder carries out being extruded into for pipeline in the step d
Type, extrusion pressure 12-15MPa, extruding pipe material hauling speed are 2-2.5M/min.
Compared with prior art, beneficial effects of the present invention are as follows:
A kind of HDPE internal-rib reinforced pipe of the present invention and preparation method thereof, by added in pipeline production process graphene and
Nano-titanium dioxide effectively enhances the stability of structure in HDPE pipe use process, avoids HDPE pipe and goes out when in use
The phenomenon that now fractureing, extends the service life of HDPE pipe, and also improve the uvioresistant in HDPE pipe use process and
Thermal conductivity effectively accelerates speed when HDPE tube extrusion molding, reduces by adding flocculant in the production of HDPE pipe
Occurs the probability deformed when HDPE tube extrusion molding.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of flow chart of HDPE internal-rib reinforced pipe of the present invention and preparation method thereof.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of HDPE internal-rib reinforced pipe and preparation method thereof, including
Following raw material and its weight fraction: 100-150 mass parts of high density polyethylene (HDPE)；20-45 mass parts of graphene；Talcum powder 15-
25 mass parts；15-20 mass parts of nano-titanium dioxide；Coupling agent is 4-5 mass parts；Antioxidant is 3-6 mass parts；Resist quiet
Electric agent is 3-4 mass parts；Synergist is 2-5 mass parts；Dispersing agent is 1-2 mass parts；Flocculant is for 3-6 mass parts and surely
Determining agent is 4-7 mass parts.
Further, the HDPE internal-rib reinforced pipe, including following raw material and its weight fraction: high density polyethylene (HDPE) 150
Mass parts；35 mass parts of graphene；20 mass parts of talcum powder；17 mass parts of nano-titanium dioxide；Coupling agent is 5 mass parts；It is anti-
Oxygen agent is 4 mass parts；Antistatic agent is 3 mass parts；Synergist is 2 mass parts；Dispersing agent is 2 mass parts；Flocculant is 5 mass
Part and stabilizer are 6 mass parts.
Further, the HDPE internal-rib reinforced pipe, including following raw material and its weight fraction: high density polyethylene (HDPE) 150
Mass parts；20 mass parts of talcum powder；Coupling agent is 5 mass parts；Antioxidant is 4 mass parts；Antistatic agent is 3 mass parts；Synergy
Agent is 2 mass parts；Dispersing agent is 2 mass parts and stabilizer is 6 mass parts.
Further, the production method of the HDPE internal-rib reinforced pipe, making step are as follows:
A. above-mentioned raw materials are weighed according to parts by weight first, then again by weighed graphene, talcum powder, nanometer two
Titanium oxide, coupling agent and dispersing agent are added in high-speed mixer, are heated to 70-80 DEG C, mix 30min, obtain mixed material A；
B. after the completion of step a, then high density polyethylene (HDPE), synergist and antioxidant is added to the mixer, is uniformly mixed,
It is then added in the resulting mixed material A of step a, is then mixed again, obtain mixed material B；
C. after the completion of step b, then antistatic agent, flocculant and synergist are put into the mixing for filling mixed material B
In machine, then suitable water is added to be mixed again, incorporation time is 20~30min, and temperature is maintained at 55~65 DEG C, revolving speed 750
~930r/min obtains mixed material C；
D. after the completion of step c, the mixed material C prepared is put into granulation machine and is pelletized, prilling temperature is
45~55 DEG C, engine speed is about 250~320r/min, and the feed particles made are then put into double screw extruder again
The middle extrusion molding for carrying out pipeline, prilling temperature is at 145~165 DEG C；
E. after the completion of step d, then the pipeline prepared cooled down, is then cut according still further to corresponding size
It cuts.
Further, the graphene mainly includes following raw material: glass fibre, clay, laccase, poly- glutaric acid propylene glycol
Ester, tripropylene glycol butyl ether and chloroacetyl acetacetic ester are made.
Further, the antioxidant is selected from N, N '-DPD di p phenylenediamine, thio-2 acid octadecyl ester, pentaerythritol ester, sulphur
For dipropionic acid dilauryl or 1, one or more of 1,3- tri- butane.
Further, the dispersing agent is selected from polyethylene wax, oxidized polyethylene wax, plasticized polyvinyl wax, poly- Alpha-Methyl benzene
One or more of ethylene or white oil.
Further, the flocculant mainly includes following raw material: polymeric bisgallic acid alumnium ferrous solution, formic acid, polyamines, catalyst,
Sodium hydroxide, chitosan, hydrochloric acid and glutaraldehyde are made.
Further, in the step d double screw extruder carry out pipeline extrusion molding, extrusion pressure 12-15MPa,
Extruding pipe material hauling speed is 2-2.5M/min.
Embodiment one
The HDPE internal-rib reinforced pipe, including following raw material and its weight fraction: 150 mass parts of high density polyethylene (HDPE)；
35 mass parts of graphene；20 mass parts of talcum powder；17 mass parts of nano-titanium dioxide；Coupling agent is 5 mass parts；Antioxidant is 4
Mass parts；Antistatic agent is 3 mass parts；Synergist is 2 mass parts；Dispersing agent is 2 mass parts；Flocculant is for 5 mass parts and surely
Determining agent is 6 mass parts.
Making step is as follows:
A. above-mentioned raw materials are weighed according to parts by weight first, then again by weighed graphene, talcum powder, nanometer two
Titanium oxide, coupling agent and dispersing agent are added in high-speed mixer, are heated to 70-80 DEG C, mix 30min, obtain mixed material A；
B. after the completion of step a, then high density polyethylene (HDPE), synergist and antioxidant is added to the mixer, is uniformly mixed,
It is then added in the resulting mixed material A of step a, is then mixed again, obtain mixed material B；
C. after the completion of step b, then antistatic agent, flocculant and synergist are put into the mixing for filling mixed material B
In machine, then suitable water is added to be mixed again, incorporation time is 20~30min, and temperature is maintained at 55~65 DEG C, revolving speed 750
~930r/min obtains mixed material C；
D. after the completion of step c, the mixed material C prepared is put into granulation machine and is pelletized, prilling temperature is
45~55 DEG C, engine speed is about 250~320r/min, and the feed particles made are then put into double screw extruder again
The middle extrusion molding for carrying out pipeline, prilling temperature is at 145~165 DEG C；
E. after the completion of step d, then the pipeline prepared cooled down, is then cut according still further to corresponding size
It cuts.
Embodiment two
The HDPE internal-rib reinforced pipe, including following raw material and its weight fraction: 150 mass parts of high density polyethylene (HDPE)；
20 mass parts of talcum powder；Coupling agent is 5 mass parts；Antioxidant is 4 mass parts；Antistatic agent is 3 mass parts；Synergist is 2 matter
Measure part；Dispersing agent is 2 mass parts and stabilizer is 6 mass parts.
Making step is as follows:
A. above-mentioned raw materials are weighed according to parts by weight first, then again by weighed graphene, talcum powder, nanometer two
Titanium oxide, coupling agent and dispersing agent are added in high-speed mixer, are heated to 70-80 DEG C, mix 30min, obtain mixed material A；
B. after the completion of step a, then high density polyethylene (HDPE), synergist and antioxidant is added to the mixer, is uniformly mixed,
It is then added in the resulting mixed material A of step a, is then mixed again, obtain mixed material B；
C. after the completion of step b, then antistatic agent, flocculant and synergist are put into the mixing for filling mixed material B
In machine, then suitable water is added to be mixed again, incorporation time is 20~30min, and temperature is maintained at 55~65 DEG C, revolving speed 750
~930r/min obtains mixed material C；
D. after the completion of step c, the mixed material C prepared is put into granulation machine and is pelletized, prilling temperature is
45~55 DEG C, engine speed is about 250~320r/min, and the feed particles made are then put into double screw extruder again
The middle extrusion molding for carrying out pipeline, prilling temperature is at 145~165 DEG C；
E. after the completion of step d, then the pipeline prepared cooled down, is then cut according still further to corresponding size
It cuts.
Traditional HDPE pipe data parameters table 1 is as follows:
| Test item | Obdurability | Stability | Service life | Deformation rate |
| Parameter index | It is weak | Difference | It is short | It is high |
One HDPE pipe data parameters table 2 of embodiment is as follows:
| Test item | Obdurability | Stability | Service life | Deformation rate |
| Parameter index | Generally | Well | Generally | In |
Two HDPE pipe data parameters table 3 of embodiment is as follows:
| Test item | Obdurability | Stability | Service life | Deformation rate |
| Parameter index | It is high | It is excellent | It is longer | It is low |
It to sum up states, is obtained referring to the data comparison of table 1, table 2 and table 3, by adding graphene in pipeline production process
And nano-titanium dioxide, the stability of structure in HDPE pipe use process is effectively enhanced, avoids HDPE pipe when in use
The phenomenon that fractureing, extends the service life of HDPE pipe, and also improves the uvioresistant in HDPE pipe use process
And thermal conductivity effectively accelerates speed when HDPE tube extrusion molding, reduces by adding flocculant in the production of HDPE pipe
There is the probability deformed when HDPE tube extrusion molding.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of HDPE internal-rib reinforced pipe and preparation method thereof, it is characterised in that: including following raw material and its weight fraction: highly dense
Spend 100-150 mass parts of polyethylene；20-45 mass parts of graphene；15-25 mass parts of talcum powder；Nano-titanium dioxide 15-
20 mass parts；Coupling agent is 4-5 mass parts；Antioxidant is 3-6 mass parts；Antistatic agent is 3-4 mass parts；Synergist is
2-5 mass parts；Dispersing agent is 1-2 mass parts；Flocculant is 3-6 mass parts and stabilizer is 4-7 mass parts.
2. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: including following original
Material and its weight fraction: 150 mass parts of high density polyethylene (HDPE)；35 mass parts of graphene；20 mass parts of talcum powder；Nanometer titanium dioxide
17 mass parts of titanium；Coupling agent is 5 mass parts；Antioxidant is 4 mass parts；Antistatic agent is 3 mass parts；Synergist is 2 mass parts；
Dispersing agent is 2 mass parts；Flocculant is 5 mass parts and stabilizer is 6 mass parts.
3. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: including following original
Material and its weight fraction: 150 mass parts of high density polyethylene (HDPE)；20 mass parts of talcum powder；Coupling agent is 5 mass parts；Antioxidant is 4
Mass parts；Antistatic agent is 3 mass parts；Synergist is 2 mass parts；Dispersing agent is 2 mass parts and stabilizer is 6 mass parts.
4. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: making step is such as
Under:
A. above-mentioned raw materials are weighed according to parts by weight first, then again by weighed graphene, talcum powder, nanometer titanium dioxide
Titanium, coupling agent and dispersing agent are added in high-speed mixer, are heated to 70-80 DEG C, mix 30min, obtain mixed material A；
B. after the completion of step a, then high density polyethylene (HDPE), synergist and antioxidant is added to the mixer, is uniformly mixed, then
It is added in the resulting mixed material A of step a, is then mixed again, obtain mixed material B；
C. after the completion of step b, then antistatic agent, flocculant and synergist be put into the mixing machine for filling mixed material B,
Then again plus suitable water is mixed, incorporation time is 20~30min, and temperature is maintained at 55~65 DEG C, revolving speed 750~
930r/min obtains mixed material C；
D. after the completion of step c, by the mixed material C prepared be put into be granulated machine pelletize, prilling temperature be 45~
55 DEG C, engine speed is about 250~320r/min, then again by the feed particles made be put into double screw extruder into
The extrusion molding of row pipeline, prilling temperature is at 145~165 DEG C；
E. after the completion of step d, then the pipeline prepared cooled down, is then cut according still further to corresponding size.
5. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: the graphene
It mainly include following raw material: glass fibre, clay, laccase, poly- glutaric acid propylene glycol ester, tripropylene glycol butyl ether and chloroethene ethyl acetoacetic acid
Ethyl ester is made.
6. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: the antioxygen
Agent is selected from N, N '-DPD di p phenylenediamine, thio-2 acid octadecyl ester, pentaerythritol ester, dilauryl thiodipropionate or 1,1,3-
One or more of three butane.
7. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: the dispersion
Agent be selected from one or both of polyethylene wax, oxidized polyethylene wax, plasticized polyvinyl wax, poly alpha methylstyrene or white oil with
On.
8. a kind of HDPE internal-rib reinforced pipe according to claim 1 and preparation method thereof, it is characterised in that: the flocculant
It mainly include following raw material: polymeric bisgallic acid alumnium ferrous solution, formic acid, polyamines, catalyst, sodium hydroxide, chitosan, hydrochloric acid and penta 2
Aldehyde is made.
9. a kind of HDPE internal-rib reinforced pipe according to claim 4 and preparation method thereof, it is characterised in that: the step d
Middle double screw extruder carries out the extrusion molding of pipeline, extrusion pressure 12-15MPa, and extruding pipe material hauling speed is 2-2.5M/
min。
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| CN201910443579.1A CN110066449A (en) | 2019-05-27 | 2019-05-27 | A kind of HDPE internal-rib reinforced pipe and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443579.1A CN110066449A (en) | 2019-05-27 | 2019-05-27 | A kind of HDPE internal-rib reinforced pipe and preparation method thereof |
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| CN109467776A (en) * | 2018-09-29 | 2019-03-15 | 台州学院 | A kind of antistatic PE pipe and its manufacturing method |
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| CN108911072A (en) * | 2018-06-30 | 2018-11-30 | 佛山科枫文化传播有限公司 | A kind of inorganic-organic hybrid high polymer coagulant and preparation method thereof |
| CN109181060A (en) * | 2018-08-07 | 2019-01-11 | 杭州毅而玛管业有限公司 | A kind of HDPE solid wall pipe and preparation method thereof |
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| CN110628119A (en) * | 2019-08-30 | 2019-12-31 | 广州特种承压设备检测研究院 | A kind of modified graphene composite polyethylene material and preparation method thereof |
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Application publication date: 20190730 |