CN116376172A - Preparation method of low-temperature-resistant high-toughness PPR (Poly-p-phenylene) pipe - Google Patents
Preparation method of low-temperature-resistant high-toughness PPR (Poly-p-phenylene) pipe Download PDFInfo
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- CN116376172A CN116376172A CN202310066909.6A CN202310066909A CN116376172A CN 116376172 A CN116376172 A CN 116376172A CN 202310066909 A CN202310066909 A CN 202310066909A CN 116376172 A CN116376172 A CN 116376172A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 title description 3
- 239000004595 color masterbatch Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims description 69
- 239000005060 rubber Substances 0.000 claims description 69
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 58
- 239000000843 powder Substances 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 34
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 24
- 238000001125 extrusion Methods 0.000 claims description 23
- 229920001400 block copolymer Polymers 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 claims description 10
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000005062 Polybutadiene Substances 0.000 claims description 5
- 239000002174 Styrene-butadiene Substances 0.000 claims description 5
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920002857 polybutadiene Polymers 0.000 claims description 5
- 239000011115 styrene butadiene Substances 0.000 claims description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 5
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000002706 hydrostatic effect Effects 0.000 abstract description 7
- 238000009863 impact test Methods 0.000 abstract description 7
- 238000005034 decoration Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000009931 pascalization Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method of a low-temperature-resistant high-toughness PPR pipe, which is simple and feasible, and the obtained pipe can bear drop hammer impact and is not broken after impact test; meanwhile, the pipe does not burst under the test of 1000h hydrostatic pressure, the home decoration requirement can be met, the problem that a PPR water pipe is easy to be impacted and broken in a low-temperature environment can be solved, the preparation method of the low-temperature impact resistant PPR pipe is characterized in that PPR, toughening master batches and color master batches are mixed according to the proportion, and the low-temperature impact resistant PPR pipe is obtained by putting the mixture into a single screw extruder for molding.
Description
Technical Field
The invention relates to the technical field of preparation methods of PPR (Poly-p-phenylene) pipes, in particular to a preparation method of a low-temperature-resistant high-toughness PPR pipe.
Background
The PP-R pipe is widely applied to household decoration cold and hot water systems due to light weight, low cost and good stability. However, under extremely cold conditions, particularly in an environment with the temperature lower than-10 ℃, if the PPR pipe is impacted by a certain external force, the PPR pipe is broken, so that the transportation, construction and installation of the PPR pipe in a low-temperature environment are seriously influenced, and the popularization and the use of the PPR pipe in a low-temperature environment are not facilitated. Therefore, a low-temperature toughening technology needs to be developed, so that the pipe can maintain high-strength toughness at low temperature, can bear external force impact at low temperature, and can be installed and used at low temperature. The obtained pipe can resist the impact of a drop hammer with the height of 1.5m and the weight of 5kg at the temperature of minus 15 ℃, and the pipe after the impact test is free from cracking; meanwhile, the obtained pipe does not burst under the test of 1000h hydrostatic pressure. Can meet the application in the field of home decoration and solve the problem that PPR water pipes are easy to be impacted and broken in a low-temperature environment.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a preparation method of a low temperature resistant and high toughness type PPR pipe, which has the advantages of maintaining high strength toughness of the pipe at low temperature, bearing external force impact at low temperature, ensuring the pipe to be installed and used at low temperature, and the like, and solves the problems in the prior art.
(II) technical scheme
In order to achieve the above object in the background art, the present invention provides the following technical solutions: a preparation method of a low-temperature-resistant high-toughness PPR pipe comprises the following steps:
s1, mixing raw material components in proportion, adding the mixture into a single screw extruder for extrusion, cooling and granulating to obtain toughened master batch;
s2: and mixing the PPR, the toughening master batch, the color master batch and the antioxidant in proportion, and performing extrusion molding to obtain the low-temperature-resistant high-toughness PPR pipe.
The raw materials comprise: PPR resin, rubber toughening master batch, inorganic rigid particle toughening master batch, antioxidant and color master batch.
Preferably, the adhesive comprises the following raw materials in parts by weight:
100 parts of PPR resin, 20-30 parts of rubber toughening master batch, 20-30 parts of inorganic rigid particle toughening master batch, 2-4 parts of antioxidant and 4-6 parts of color master batch.
Preferably, the rubber toughening master batch is one or more of maleic anhydride grafted POE, maleic anhydride grafted EPDM and maleic anhydride grafted EVA.
Preferably, the fully vulcanized powder rubber is cross-linked powder rubber with the particle size range of 100-200 nm, the fully vulcanized powder rubber is cross-linked powder rubber with the particle size range of 120-170 nm, and the fully vulcanized powder rubber is fully vulcanized styrene-butadiene powder rubber or fully vulcanized polybutadiene powder rubber.
Preferably, the inorganic rigid particle toughening master batch comprises the following components in percentage by mass:
29-80% of PP, 19-70% of star rubber and 0.05-2% of antioxidant, wherein the star rubber comprises at least one of star styrene-butadiene-styrene ternary block copolymer, star hydrogenated styrene-butadiene-styrene ternary block copolymer, star styrene-isoprene-styrene ternary block copolymer and star hydrogenated styrene-isoprene-styrene ternary block copolymer.
Preferably, the PP includes at least one of copolymerized PP, random copolymerized PP, and homopolymerized PP.
Preferably, the extrusion temperature of the single screw extruder is 175-210 ℃, and the rotating speed of the screw is 80-100r/min.
(III) beneficial effects
Compared with the prior art, the invention provides a preparation method of a low-temperature-resistant high-toughness PPR pipe, which has the following beneficial effects:
1. the preparation method of the low-temperature-resistant high-toughness PPR pipe is simple and easy to implement, the obtained pipe can resist the impact of a drop hammer with the height of 1.5m and the weight of 5kg at the temperature of minus 15 ℃, and the pipe after the impact test is free from cracking; meanwhile, the obtained pipe does not burst under the test of 1000h hydrostatic pressure. Can meet the application in the field of home decoration and solve the problem that PPR water pipes are easy to be impacted and broken in a low-temperature environment.
2. According to the preparation method of the low-temperature-resistant high-toughness PPR pipe, the PPR, the toughening master batch and the color master batch are mixed according to the proportion, and the PPR pipe is molded by a single screw extruder, so that the low-temperature-resistant impact PPR pipe is obtained.
3. The PPR material for the low-temperature-resistant high-hydrostatic-pressure water supply pipe, which is prepared by taking PPR resin, rubber toughening master batch, inorganic rigid particle toughening master batch, antioxidant and color master batch as main raw materials, overcomes the defects of the PPR material in water vapor permeability, low-temperature resistance, high hydrostatic pressure, flame retardance, mechanical strength, high toughness and the like, and can be processed into various plastic products by adopting extrusion molding processes and the like, and is applied to the fields of tap water pipelines, tap water pipe joints, water purifier pipelines, water purifier pipe joints and solar water heater pipelines.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one: the raw materials with the following weight portions are taken: 100 parts of PPR resin, 10 parts of rubber toughening master batch, 10 parts of inorganic rigid particle toughening master batch, 0.1 part of antioxidant and 1 part of color master batch;
wherein the rubber toughening master batch is prepared by melting and extruding PPR resin and fully vulcanized powder rubber; the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 100-20 nm, the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 120-170 nm, and the fully vulcanized powder rubber is fully vulcanized styrene-butadiene powder rubber or fully vulcanized polybutadiene powder rubber; the rubber toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride; the inorganic rigid particle toughening master batch comprises the following components in percentage by mass:
29-80% of PP, 19-70% of star rubber and 0.05-2% of antioxidant, wherein the star rubber comprises at least one of star styrene-butadiene-styrene ternary block copolymer, star hydrogenated styrene-butadiene-styrene ternary block copolymer, star styrene-isoprene-styrene ternary block copolymer and star hydrogenated styrene-isoprene-styrene ternary block copolymer; the PP comprises at least one of copolymerized PP, random copolymerized PP and homopolymerized PP;
the inorganic rigid particle toughening master batch is prepared by melting and extruding inorganic rigid particles treated by PPR resin and a surface modifier, and the raw material components of the rubber toughening master batch and the inorganic rigid particle toughening master batch are mixed according to a proportion, and are added into a single screw extruder for extrusion, cooling and granulation to obtain toughening master batch;
mixing and stirring the PP-R raw material, the toughening master batch and the color master batch according to the formula proportion, and extruding and molding the mixture into a pipe through a single screw extruder;
when the single-screw extruder is used for extrusion, the extrusion temperature of the first section is 175 ℃, the extrusion temperature of the second section is 185 ℃, the extrusion temperature of the third section is 195 ℃, the die temperature is 200 ℃, and the rotating speed of the screw is 80r/min; the formula proportion is PPR: toughening master batch: the color masterbatch is 100:1.05:1.3; the toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride; the damage rate of the PPR pipe is 0 after the impact test of a drop hammer with the height of 5kg and 1.5m under the environment of-15 ℃ of the low-temperature-resistant high-toughness PPR pipe; the 1000h hydrostatic test of the pipe is qualified, and other performances of the pipe meet the related requirements of GB/T18742.2-2017.
Embodiment two: the raw materials with the following weight portions are taken: 100 parts of PPR resin, 10 parts of rubber toughening master batch, 10 parts of inorganic rigid particle toughening master batch, 0.1 part of antioxidant and 1 part of color master batch;
wherein the rubber toughening master batch is prepared by melting and extruding PPR resin and fully vulcanized powder rubber; the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 100-20 nm, the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 120-170 nm, and the fully vulcanized powder rubber is fully vulcanized styrene-butadiene powder rubber or fully vulcanized polybutadiene powder rubber; the rubber toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride; the inorganic rigid particle toughening master batch comprises the following components in percentage by mass:
29-80% of PP, 19-70% of star rubber and 0.05-2% of antioxidant, wherein the star rubber comprises at least one of star styrene-butadiene-styrene ternary block copolymer, star hydrogenated styrene-butadiene-styrene ternary block copolymer, star styrene-isoprene-styrene ternary block copolymer and star hydrogenated styrene-isoprene-styrene ternary block copolymer; the PP comprises at least one of copolymerized PP, random copolymerized PP and homopolymerized PP;
the inorganic rigid particle toughening master batch is prepared by melting and extruding inorganic rigid particles treated by PPR resin and a surface modifier, and the raw material components of the rubber toughening master batch and the inorganic rigid particle toughening master batch are mixed according to a proportion, and are added into a single screw extruder for extrusion, cooling and granulation to obtain toughening master batch;
mixing and stirring the PP-R raw material, the toughening master batch and the color master batch according to the formula proportion, extruding and molding the mixture into a pipe through a single screw extruder,
when the single-screw extruder is used for extrusion, the extrusion temperature of the first section is 185 ℃, the extrusion temperature of the second section is 195 ℃, the extrusion temperature of the third section is 200 ℃, the die temperature is 210 ℃, and the rotating speed of the screw is 100r/min;
the formula ratio is PPR: toughening master batch: the color masterbatch is 100:5.58:4.8;
the toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride;
the damage rate of the PPR pipe is 0 after the impact test of dropping hammer with the height of 5kg and 1.5m under the environment of-15 ℃; the 1000h hydrostatic test of the pipe is qualified, and other performances of the pipe meet the related requirements of GB/T18742.2-2017.
Embodiment III: the raw materials with the following weight portions are taken: 100 parts of PPR resin, 10 parts of rubber toughening master batch, 10 parts of inorganic rigid particle toughening master batch, 0.1 part of antioxidant and 1 part of color master batch;
wherein the rubber toughening master batch is prepared by melting and extruding PPR resin and fully vulcanized powder rubber; the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 100-20 nm, the fully vulcanized powder rubber is crosslinked powder rubber with the particle size range of 120-170 nm, and the fully vulcanized powder rubber is fully vulcanized styrene-butadiene powder rubber or fully vulcanized polybutadiene powder rubber; the rubber toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride; the inorganic rigid particle toughening master batch comprises the following components in percentage by mass:
29-80% of PP, 19-70% of star rubber and 0.05-2% of antioxidant, wherein the star rubber comprises at least one of star styrene-butadiene-styrene ternary block copolymer, star hydrogenated styrene-butadiene-styrene ternary block copolymer, star styrene-isoprene-styrene ternary block copolymer and star hydrogenated styrene-isoprene-styrene ternary block copolymer; the PP comprises at least one of copolymerized PP, random copolymerized PP and homopolymerized PP;
the inorganic rigid particle toughening master batch is prepared by melting and extruding inorganic rigid particles treated by PPR resin and a surface modifier, and the raw material components of the rubber toughening master batch and the inorganic rigid particle toughening master batch are mixed according to a proportion, and are added into a single screw extruder for extrusion, cooling and granulation to obtain toughening master batch; mixing and stirring the PP-R raw material, the toughening master batch and the color master batch according to the formula proportion, and extruding and molding the mixture into a pipe through a single screw extruder;
when the single-screw extruder is used for extrusion, the extrusion temperature of the first section is 180 ℃, the extrusion temperature of the second section is 190 ℃, the extrusion temperature of the third section is 198 ℃, the die temperature is 205 ℃, and the rotating speed of the screw is 90r/min;
the formula ratio is PPR: toughening master batch: masterbatch = 100:3:3, a step of;
the toughening master batch is one or more of POE grafted by maleic anhydride, EPDM grafted by maleic anhydride and EVA grafted by maleic anhydride;
the damage rate of the PPR pipe is 0 after the impact test of dropping hammer with the height of 5kg and 1.5m under the environment of-15 ℃; the 1000h hydrostatic test of the pipe is qualified, and other performances of the pipe meet the related requirements of GB/T18742.2-2017.
The beneficial effects of the invention are as follows: solves the defects existing in the prior art, and provides a preparation method of a low-temperature-resistant high-toughness PPR pipe, which is simple and easy to implement. The obtained pipe can resist the impact of a drop hammer with the height of 1.5m and the weight of 5kg at the temperature of minus 15 ℃, and the pipe after the impact test is free from cracking; meanwhile, the obtained pipe does not burst under the test of 1000h hydrostatic pressure. Can meet the application in the field of home decoration and solve the problem that PPR water pipes are easy to be impacted and broken in a low-temperature environment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation method of the low-temperature-resistant high-toughness PPR pipe is characterized by comprising the following steps of:
s1, mixing the raw material components in proportion, adding the mixture into a single screw extruder for extrusion, cooling and granulating to obtain toughened master batch, wherein the raw materials comprise: PPR resin, rubber toughening master batch, inorganic rigid particle toughening master batch, antioxidant and color master batch;
s2: and mixing the PPR, the toughening master batch, the color master batch and the antioxidant in proportion, and performing extrusion molding to obtain the low-temperature-resistant high-toughness PPR pipe.
2. The preparation method of the low-temperature-resistant high-toughness PPR pipe material is characterized by comprising the following raw materials in parts by weight: 100 parts of PPR resin, 10-30 parts of rubber toughening master batch, 10-30 parts of inorganic rigid particle toughening master batch, 0.1-5 parts of antioxidant and 1-8 parts of color master batch;
wherein the rubber toughening master batch is prepared by melting and extruding PPR resin and fully vulcanized powder rubber;
the inorganic rigid particle toughening master batch is prepared by melt extrusion of inorganic rigid particles treated by PPR resin and a surface modifier.
3. The method for preparing the low-temperature-resistant high-toughness PPR pipe according to claim 1, wherein the rubber toughening master batch is one or more of maleic anhydride grafted POE, maleic anhydride grafted EPDM and maleic anhydride grafted EVA.
4. The method for preparing the low-temperature-resistant high-toughness PPR pipe according to claim 2, wherein the fully vulcanized powder rubber is cross-linked powder rubber with the particle size range of 100-20 nm, the fully vulcanized powder rubber is cross-linked powder rubber with the particle size range of 120-170 nm, and the fully vulcanized powder rubber is fully vulcanized styrene-butadiene powder rubber or fully vulcanized polybutadiene powder rubber.
5. The preparation method of the low-temperature-resistant high-toughness PPR pipe according to claim 1, wherein the inorganic rigid particle toughening master batch comprises the following components in percentage by mass:
29-80% of PP, 19-70% of star rubber and 0.05-2% of antioxidant, wherein the star rubber comprises at least one of star styrene-butadiene-styrene ternary block copolymer, star hydrogenated styrene-butadiene-styrene ternary block copolymer, star styrene-isoprene-styrene ternary block copolymer and star hydrogenated styrene-isoprene-styrene ternary block copolymer.
6. The method for preparing a low temperature resistant and high toughness reinforced PPR pipe according to claim 5, wherein the PP comprises at least one of copolymerized PP, random copolymerized PP and homopolymerized PP.
7. The method for preparing the low-temperature-resistant high-toughness PPR pipe according to claim 1, wherein the extrusion temperature of the single screw extruder is 175-210 ℃, and the rotating speed of the screw is 80-100r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310066909.6A CN116376172A (en) | 2023-02-06 | 2023-02-06 | Preparation method of low-temperature-resistant high-toughness PPR (Poly-p-phenylene) pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310066909.6A CN116376172A (en) | 2023-02-06 | 2023-02-06 | Preparation method of low-temperature-resistant high-toughness PPR (Poly-p-phenylene) pipe |
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| CN116376172A true CN116376172A (en) | 2023-07-04 |
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| CN202310066909.6A Pending CN116376172A (en) | 2023-02-06 | 2023-02-06 | Preparation method of low-temperature-resistant high-toughness PPR (Poly-p-phenylene) pipe |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750989A (en) * | 2016-11-22 | 2017-05-31 | 广东联塑科技实业有限公司 | A kind of low temperature resistant high rigidity PPR pipe and preparation method thereof |
| CN107936385A (en) * | 2017-12-11 | 2018-04-20 | 薄文海 | A kind of low-temperature impact-resistant PPR pipe and preparation method thereof |
| CN113072770A (en) * | 2021-04-19 | 2021-07-06 | 茂名联塑建材有限公司 | Toughened heat-resistant PPR pipe and preparation method and application thereof |
| CN113637262A (en) * | 2021-07-05 | 2021-11-12 | 山东联塑科技实业有限公司 | Low-temperature high-toughness PPR pipe and preparation method and application thereof |
-
2023
- 2023-02-06 CN CN202310066909.6A patent/CN116376172A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750989A (en) * | 2016-11-22 | 2017-05-31 | 广东联塑科技实业有限公司 | A kind of low temperature resistant high rigidity PPR pipe and preparation method thereof |
| CN107936385A (en) * | 2017-12-11 | 2018-04-20 | 薄文海 | A kind of low-temperature impact-resistant PPR pipe and preparation method thereof |
| CN113072770A (en) * | 2021-04-19 | 2021-07-06 | 茂名联塑建材有限公司 | Toughened heat-resistant PPR pipe and preparation method and application thereof |
| CN113637262A (en) * | 2021-07-05 | 2021-11-12 | 山东联塑科技实业有限公司 | Low-temperature high-toughness PPR pipe and preparation method and application thereof |
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