CN104387680A - High-impact-resistance PP-R tubular product and preparation method thereof - Google Patents
High-impact-resistance PP-R tubular product and preparation method thereof Download PDFInfo
- Publication number
- CN104387680A CN104387680A CN201410728559.6A CN201410728559A CN104387680A CN 104387680 A CN104387680 A CN 104387680A CN 201410728559 A CN201410728559 A CN 201410728559A CN 104387680 A CN104387680 A CN 104387680A
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- China
- Prior art keywords
- pipe
- parts
- impact
- ethylene
- propylene copolymer
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- F16L9/12—Rigid pipes of plastics with or without reinforcement
Abstract
The invention discloses a high-impact-resistance PP-R tubular product. The high-impact-resistance PP-R tubular product is prepared from the following raw materials in parts by weight: 100 parts of PP-R and 5-30 parts of ethylene-propylene copolymer. The ethylene-propylene block polymer contains high-content polypropylene chains, and has similar characteristics and excellent compatibility with the PP-R, so that the prepared PP-R tubular product keeps the original performances of the PP-R pipe and are also improved in low-temperature impact resistance.
Description
Technical field
the present invention relates to polypropylene pipe field, more specifically, relate to and a kind of there is PP-R pipe of high-impact performance and preparation method thereof.
Background technology
pP-R is again three type polypropylene or atactic copolymerized polypropenes, and adopt atactic copolymerized polypropene through being extruded as tubing, injection moulding becomes pipe fitting.PP-R pipe is the novel plastic pipeline product of Europe Application and Development at the beginning of the nineties.PP-R is the end of the eighties, adopts gas-phase copolymerization technique to make about 5% PE homogeneous polymerization (random copolymerization) and become pipeline material of new generation randomly in the molecular chain of PP.Its intensity is high, has good impact property and long-term creep behaviour.Pipeline has excellent chemically-resistant article corrosive nature simultaneously, and be insoluble to any known solvent under normal temperature, work-ing life can for 50 years.
But the low-temperature flexibility of PP-R pipe is poor, but when temperature is down to-5 DEG C, the shock resistance of tubing is very poor.One of method of the shock resistance improving material by dosing elastomerics, after dosing elastomerics, when being subject to impact force action, the flexible molecule chain of elastomerics self and the motion of segment, absorb and the striking energy that dissipated, the entanglement that flexible molecule chain is intersegmental simultaneously adds the in-fighting of system, and the striking energy of consumption makes system shock strength improve.
Although shock resistance under tubing low temperature can be improved by dosing elastomerics, but, generally elastomericly to add due to PP-R properties of materials difference is comparatively large and consistency is not good, often reduce the otherwise performance of PP-R pipe, the requirement of relevant criterion cannot be met.
Summary of the invention
An object of the present invention is to obtain a kind of high-impact and the PP-R pipe of over-all properties equilibrium.
First the present invention provides a kind of PP-R pipe with high-impact performance, by weight, comprises following raw material:
PP-R 100 parts; Ethylene-propylene copolymer 5 ~ 30 parts.
Propylene content in described ethylene-propylene copolymer is more than or equal to 60%.
By weight, in raw material, also comprise following component,
Antiaging agent 0.5 ~ 5 part,
Look mother 1 ~ 5 part.
Described antiaging agent is Hinered phenols stablizer.
A kind of above-mentioned preparation method with the PP-R pipe of high-impact performance is further provided; PP-R, ethylene-propylene copolymer, antiaging agent and look mother are added to high-speed mixer mixing; then forcing machine is extruded, and water-cooled, drying, dicing machine granulation, to obtain final product.
The extrusion temperature of forcing machine is 200 ~ 220 DEG C, and the screw speed of forcing machine is 180 ~ 200r/min.
There is provided the above-mentioned PP-R pipe with high-impact performance can application in low temperature impact material according to demand.
Tubing of the present invention is by dosing Ethylene-Propylene Block Copolymer, and this multipolymer contains the polypropylene chains of high level, has close characteristic and excellent consistency with PP-R.Meanwhile, the Polyethylene Chain of this multipolymer can effectively absorb a part of impact energy when being subject to impacting, thus improves the low-temperature impact resistance of tubing.Elastomerics and PP-R matrix have good consistency simultaneously, can not affect other performances of tubing.
The present invention has the following advantages:
Compare with existing PP-R pipe, high-impact PP-R pipe of the present invention has excellent mechanical property, shock resistance and splitting resistance.Ethylene-propylene copolymer and PP-R have excellent compatibility, improve the shock resistance of tubing when low temperature, can not affect other performances of tubing simultaneously.
Embodiment
The present invention is further described below in conjunction with specific embodiment.Unless stated otherwise, the present invention adopts reagent, equipment and method are conventional commercial reagent, equipment and the conventional method used of the art.
Embodiment 1:
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 10 parts
Hinered phenols antioxidant 0.5 part
Look female 1 part
Propylene content in described ethylene-propylene copolymer is 65%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 200 DEG C, and the screw speed of forcing machine is 180r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 0, and other performance of tubing meets the requirement of GB/T 18742.2-2002.
Embodiment 2:
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 5 parts
Hinered phenols antioxidant 5 parts
Look female 5 parts
Propylene content in described ethylene-propylene copolymer is 63%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 210 DEG C, and the screw speed of forcing machine is 190r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 0, and other performance of tubing meets the requirement of GB/T 18742.2-2002.
Embodiment 3:
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 20 parts
Hinered phenols antioxidant 3 parts
Look female 2 parts
Propylene content in described ethylene-propylene copolymer is 67%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 220 DEG C, and the screw speed of forcing machine is 200r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 0, and other performance of tubing meets the requirement of GB/T 18742.2-2002.
Embodiment 4:
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 30 parts
Hinered phenols antioxidant 3 parts
Look female 3 parts
Propylene content in described ethylene-propylene copolymer is 71%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 200 DEG C, and the screw speed of forcing machine is 200r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 0, and other performance of tubing meets the requirement of GB/T 18742.2-2002.
Comparative example 1:
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 1 part
Hinered phenols antioxidant 3 parts
Look female 3 parts
Propylene content in described ethylene-propylene copolymer is 65%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 220 DEG C, and the screw speed of forcing machine is 200r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 10, and other performance of tubing meets the requirement of GB/T 18742.2-2002.
Comparative example 2
The material of tubing is made up of the raw material of following parts by weight:
PP-R matrix 100 parts
Ethylene-propylene copolymer 20 parts
Hinered phenols antioxidant 3 parts
Look female 3 parts
Propylene content in described ethylene-propylene copolymer is 45%.
After mixed for above-mentioned material difference, by extrusion die extrusion moulding, the extrusion temperature of forcing machine is 210 DEG C, and the screw speed of forcing machine is 180r/min, then obtains PP-R pipe through cooling, sizing, coding, cutting.
After tested, at obtained PP-R pipe-5 DEG C, charpy impact test tubing breakage rate is 0, and the hydrostatic performance of tubing does not meet the requirement of GB/T 18742.2-2002.
Claims (7)
1. there is a PP-R pipe for high-impact performance, it is characterized in that, by weight, comprise following raw material:
PP-R 100 parts; Ethylene-propylene copolymer 5 ~ 30 parts.
2. a PP-R pipe with high-impact performance according to claim 1, is characterized in that, the propylene content in described ethylene-propylene copolymer is more than or equal to 60%.
3. a PP-R pipe with high-impact performance according to claim 1, is characterized in that, by weight, also comprises following component in raw material,
Antiaging agent 0.5 ~ 5 part,
Look mother 1 ~ 5 part.
4. a PP-R pipe with high-impact performance according to claim 3, is characterized in that, described antiaging agent is Hinered phenols stablizer.
5. a preparation method with the PP-R pipe of high-impact performance according to claim 3; it is characterized in that, PP-R, ethylene-propylene copolymer, antiaging agent and look mother are added to high-speed mixer mixing, then forcing machine is extruded; water-cooled, drying, dicing machine granulation, to obtain final product.
6. preparation method according to claim 5, is characterized in that, the extrusion temperature of forcing machine is 200 ~ 220 DEG C, and the screw speed of forcing machine is 180 ~ 200r/min.
7. a PP-R pipe with high-impact performance according to claim 1 can application in low temperature impact material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728559.6A CN104387680A (en) | 2014-12-04 | 2014-12-04 | High-impact-resistance PP-R tubular product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728559.6A CN104387680A (en) | 2014-12-04 | 2014-12-04 | High-impact-resistance PP-R tubular product and preparation method thereof |
Publications (1)
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| CN104387680A true CN104387680A (en) | 2015-03-04 |
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| CN201410728559.6A Pending CN104387680A (en) | 2014-12-04 | 2014-12-04 | High-impact-resistance PP-R tubular product and preparation method thereof |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106188872A (en) * | 2016-07-13 | 2016-12-07 | 安徽永高塑业发展有限公司 | A kind of PPR pipe of low-temperature impact resistance |
| CN112852061A (en) * | 2021-01-29 | 2021-05-28 | 湖南联塑科技实业有限公司 | Quick-cooling impact-resistant PPR pipe and preparation method and application thereof |
| CN112920513A (en) * | 2021-03-17 | 2021-06-08 | 南京联塑科技实业有限公司 | Low-temperature high-impact PPR pipe and preparation method and application thereof |
| CN113175564A (en) * | 2021-04-27 | 2021-07-27 | 康泰塑胶科技集团有限公司 | Cross-linked PP-R pipe for cold and hot water and preparation method thereof |
Citations (4)
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| CN101448893A (en) * | 2006-05-26 | 2009-06-03 | 北方科技有限公司 | A polyolefin composition with improved stress whitening resistance |
| CN101864115A (en) * | 2010-06-03 | 2010-10-20 | 浙江俊尔新材料有限公司 | Scratch resistant and shock proof propylene-ethylene block copolymerization polypropylene modified material |
| CN102516669A (en) * | 2011-11-30 | 2012-06-27 | 广东联塑科技实业有限公司 | Modified polypropylene mixture for non-excavating power cable communication casing pipes and preparation method thereof |
| CN102757603A (en) * | 2012-08-02 | 2012-10-31 | 刘恒 | Random-copolymerization polypropylene toughening modified material and preparation method thereof |
-
2014
- 2014-12-04 CN CN201410728559.6A patent/CN104387680A/en active Pending
Patent Citations (4)
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| CN101448893A (en) * | 2006-05-26 | 2009-06-03 | 北方科技有限公司 | A polyolefin composition with improved stress whitening resistance |
| CN101864115A (en) * | 2010-06-03 | 2010-10-20 | 浙江俊尔新材料有限公司 | Scratch resistant and shock proof propylene-ethylene block copolymerization polypropylene modified material |
| CN102516669A (en) * | 2011-11-30 | 2012-06-27 | 广东联塑科技实业有限公司 | Modified polypropylene mixture for non-excavating power cable communication casing pipes and preparation method thereof |
| CN102757603A (en) * | 2012-08-02 | 2012-10-31 | 刘恒 | Random-copolymerization polypropylene toughening modified material and preparation method thereof |
Non-Patent Citations (1)
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| 江伟 等: "《特种合成橡胶》", 30 September 1977, 石油化学工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106188872A (en) * | 2016-07-13 | 2016-12-07 | 安徽永高塑业发展有限公司 | A kind of PPR pipe of low-temperature impact resistance |
| CN112852061A (en) * | 2021-01-29 | 2021-05-28 | 湖南联塑科技实业有限公司 | Quick-cooling impact-resistant PPR pipe and preparation method and application thereof |
| CN112920513A (en) * | 2021-03-17 | 2021-06-08 | 南京联塑科技实业有限公司 | Low-temperature high-impact PPR pipe and preparation method and application thereof |
| CN112920513B (en) * | 2021-03-17 | 2022-09-30 | 南京联塑科技实业有限公司 | Low-temperature high-impact PPR pipe and preparation method and application thereof |
| CN113175564A (en) * | 2021-04-27 | 2021-07-27 | 康泰塑胶科技集团有限公司 | Cross-linked PP-R pipe for cold and hot water and preparation method thereof |
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Application publication date: 20150304 |
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