CN105385034A - Polypropylene composition and pipe prepared from polypropylene composition - Google Patents
Polypropylene composition and pipe prepared from polypropylene composition Download PDFInfo
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- CN105385034A CN105385034A CN201510936729.4A CN201510936729A CN105385034A CN 105385034 A CN105385034 A CN 105385034A CN 201510936729 A CN201510936729 A CN 201510936729A CN 105385034 A CN105385034 A CN 105385034A
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- polypropylene
- ethylene
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- copolymer rubber
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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
- C08L23/12—Polypropene
-
- 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
-
- 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
-
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
Abstract
The invention relates to a polypropylene composition and a pipe prepared from the polypropylene composition. Polypropylene, chemically degraded polypropylene, polypropylene, an ethene/alpha-olefin copolymer, block copolymer polypropylene and vinyl copolymer rubber are mixed according to an appropriate ratio, and the mixture is mixed with auxiliary agents (such as a stabilizing agent, a flow modifier, a dispersant and a coloring agent) to form the polypropylene composition. Through melting extrusion of the polypropylene composition, the pipe wall is thin and has thickness of about 6mm. The polypropylene composition is suitable for various specifications of pipes for a water-saving irrigation system and reaches an engineering plastic level.
Description
Technical field
The present invention relates to polyolefin compositions technical field, more specifically, relate to a kind of polypropene composition and tubing thereof.
Background technology
Polypropylene has good mechanical property, thermotolerance and processing characteristics, is thus widely used in manufacturing film, fiber, tubing, hollow piece and injection-molded item etc.Different goods have different performance requriementss to polypropylene, but the polypropylene obtained from reactor can not meet the needs of product properties completely, thus have a large amount of patent and document to report polyacrylic modification work.As in patent CN1199753A with ethylene-octene copolymer rubber and talcum powder and polypropene blended thus improve polyacrylic rigidity and erosion-resisting characteristics, said composition is applicable to the goods such as injection molded automobile dashboard, door trim; By polymer grade polypropylene and chemical degradation is polypropene blended prepares high speed spinning polypropylene dedicated material in patent CN1068580A; Patent JP95, with fluorine-containing polymkeric substance and polypropene blended to improve polyacrylic processing characteristics and products appearance in 210239.
Polypropylene pipe is nontoxic, simultaneously good rigidly, heat resisting temperature high, be easy to connect, be thus more and more taken seriously, be widely used in delivery, underground heating pipeline and upper and lower conduit road etc.Polypropylene pipe for these fields uses under a certain pressure, and raw material used is through the polypropylene of modification, and it is expensive.
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, provides a kind of polypropene composition, and described polypropene composition has the processing characteristics of rigidity, shock resistance and excellence well.
Another object of the present invention is to the tubing that a kind of polypropene composition is provided.
The present invention is achieved through the following technical solutions:
A kind of polypropene composition, is made up of the compound of following weight part:
Polymer grade polypropylene 40-80, chemical degradation polypropylene 15-30, polyethylene 4, ethylene/alpha-olefin copolymer 5-10, block copolymerization polypropylene 30-35, ethylenic copolymer rubber 5-8, auxiliary agent 3-7,
The melt flow index of described polymer grade polypropylene is 7-20g/10min,
The polyacrylic melt flow index of described chemical degradation is 20-50g/10min,
Described poly density is 0.915-0.965g/cm
3,
The density of described ethylene/alpha-olefin copolymer is 0.860-0.915g/cm
3,
The melt flow rate (MFR) of described block copolymerization polypropylene is between 3g/10min, and molecular weight distributing index PDI is between 3 ~ 4, and ethylene content is between 7-8wt%.
In the present composition, the melt flow index (MeltFlowIndex, MFI) of polymer grade polypropylene is 7-20g/10min (being undertaken by GB3682-83,210 DEG C, 2.16kg), is preferably 9-12g/10min.It can be homopolymer, also can be the multipolymer with ethene.In the composition, the add-on of polymer grade polypropylene is 40-80 part, preferably 50 parts.
In the present invention, chemical degradation polypropylene refers to and carries out control degradation with a small amount of chemical degradation of promoter (conventional various organo-peroxide be polyacrylic degradation of promoter) to polymer grade polypropylene, and polypropylene can be made the resin that melt flow index is very high, molecular weight, molecular weight distribution are narrower by this method.The polyacrylic melt flow index of chemical degradation used in the present invention is 20-50g/10min, and it can be the degraded product of homo-polypropylene, also can be the degraded product of Co-polypropylene.In the composition, its consumption is 15-30%.
Polyethylene used in the present invention can be density is 0.915-0.965g/cm
3between various polyethylene, comprise Low Density Polyethylene, linear low density polyethylene, medium-density polyethylene and high density polyethylene(HDPE).In the composition, its consumption is 4%.
Ethylene/alpha-olefin copolymer used in the present invention, alpha-olefin refers to C
5-C
20alpha-olefin, as amylene-1, hexene-1, octene-1 or 4-methylpentene-1 etc.Its density is 0.860-0.915g/cm
3.In the composition, the consumption of ethylene/alpha-olefin copolymer is 5-10%.
The various auxiliary agents such as stablizer, flow ability modifying agent, tinting material, dispersion agent are also comprised in polypropene composition of the present invention.Such as Irgafos168 (three (2, 4-di-tert-butyl-phenyl) phosphorous acid ester), Irganox1010 (four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester), Tinuvin622 (succinic acid and (4-hydroxyl-2, 2, 6, 6-tetramethyl--1-piperidine alcohols) polymkeric substance), Chimassorb944 (poly-{ [6-[(1, 1, 3, 3-tetramethyl butyl)-imino-]-1, 3, 5-triazine-2, 4-bis-base] [2-(2, 2, 6, 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2, 2, 6, 6-tetramethyl-piperidyl)-imino-) etc. hindered phenol or hindered amine light stabilizer and thermo-stabilizer.These stablizers can separately or compound use, and addition is in the composition the 0.1-0.4% of weight resin; Better consumption is 0.3% of weight resin.Flow ability modifying agent is stearic acid, calcium stearate, chain alkyl fatty amide etc., and these flow ability modifying agents can separately or compound use, and addition is the 0.5-0.8% of weight resin.Tinting material can add by the form of toner or Masterbatch, and the present invention is preferably with carbon black or black masterbatch.Carbon black loading is 3% of weight resin.Dispersion agent is mainly used in the dispersion of toner or carbon black, and can be polyethylene wax, chlorinatedpolyethylene wax, Poly Propylene Wax etc., the consumption of its consumption and tinting material be suitable.The interpolation total amount of various auxiliary agent is the 1-7% of weight resin.
Block copolymerization polypropylene melting index is 1-100g/min (ASTMD1238,230 DEG C), and tensile strength is greater than 20MPa, and its content is 30-70.
Described ethylenic copolymer rubber is ethylene-butene copolymer rubber, ethylene-propylene copolymer rubber, composition containing one or more in the rubber of vinyl aromatic compounds, and its add-on is 5-8 part.
The invention provides a kind of manufacture method of polypropylene pipe, polymer grade polypropylene 40-80 part, chemical degradation polypropylene 15-30 part, polyethylene 4 parts, ethylene/alpha-olefin copolymer 5-10 part, block copolymerization polypropylene 30-35, ethylenic copolymer rubber 5-8 part and auxiliary agent 3-7 part are put into material premixing device, mix, form mixture; The mixture of formation is put into forcing machine, under the temperature condition of 200 DEG C, makes material melts mix; The uniform material of melting mixing is extruded at 220 DEG C through former, and cooling and shaping obtains.This composition tubing is applicable to engineering plastics field.
Preferably, described tube wall thickness is 6mm.
Compared with prior art, the present invention has following beneficial effect:
Polypropene composition tubing of the present invention has excellent physicals.The present invention relates to a kind of polypropene composition comprising more amount polymer grade polypropylene and chemical degradation polypropylene, small amount polyethylene, ethylene/alpha-olefin copolymer and comprise the auxiliary agents such as stablizer, flow ability modifying agent, tinting material, dispersion agent, said composition has good physical properties and extrudes processibility, by said composition being extruded continuously the thin-wall pipes of manufacture, have that crystallization velocity is fast and crystal formation is controlled, elongation at break and normal temperature, low temperature notched shock strength are high, balanced rigidity and shock resistance, excellent anti ageing property and longer work-ing life.
Embodiment
Context of the present invention can pass through the further additional explanation of the following example, but can not think that the present invention is only only limitted to these embodiments.
In the following embodiments, carbon removal infrablack, other auxiliary agent and consumption are (with the per-cent of polymer grade polypropylene quality) three (2, 4-di-tert-butyl-phenyl) phosphorous acid ester) 0.1%, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3%, poly-{ [6-[(1, 1, 3, 3-tetramethyl butyl)-imino-]-1, 3, 5-triazine-2, 4-bis-base] [2-(2, 2, 6, 6-tetramethyl-piperidyl)-amino]-hexylidene-[4-(2, 2, 6, 6-tetramethyl-piperidyl)-imino-} 0.4%, stearic acid 0.6%, polyethylene wax 4%.
Embodiment 1
Take polymer grade polypropylene (MFI is 7g/10min) 8kg, chemical degradation polypropylene (MFI is 40g/10min) 1.5kg, (density is 0.863g/cm to ethylene/octene-1 multipolymer
3) 1kg, (density is 0.935g/cm to polyethylene
3) 0.4kg, block copolymerization polypropylene 3, ethylene-propylene copolymer rubber 0.5, carbon black 0.2kg and various auxiliary agent be placed in high-speed mixer and mix, then on pipe extruder, (barrel temperature is 200 DEG C in 200 DEG C, former temperature is 220 DEG C) temperature under carry out tube extrusion, gained pipe diameter is 100mm, and tube wall thickness is 5.8mm.
Embodiment 2
Take polymer grade polypropylene (MFI is 14g/10min) 4kg, chemical degradation polypropylene (MFI is 50g/10min) 3kg, (density is 0.935g/cm to polyethylene
3) 0.4kg, (density is 0.885g/cm to ethylene/octene-1 multipolymer
3) 0.51kg, block copolymerization polypropylene 3.5, ethylene-butene copolymer rubber 0.8, carbon black 0.2kg and various auxiliary agent are placed in high-speed mixer and mix, then on pipe extruder, (barrel temperature is 200 DEG C in 200 DEG C, former temperature is 220 DEG C) temperature under carry out tube extrusion, gained pipe diameter is 100mm, and tube wall thickness is 6.1mm.
Embodiment 3
Take polymer grade polypropylene (MFI is 20g/10min) 5kg, chemical degradation polypropylene (MFI is 20g/10min) 2kg, (density is 0.924g/cm to polyethylene
3) 0.4kg, (density is 0.863g/cm to ethylene/octene-1 multipolymer
3) 0.7kg, block copolymerization polypropylene 3.2, ethylene-propylene copolymer rubber 0.6, carbon black 0.2kg and various auxiliary agent are placed in high-speed mixer and mix, then on SLF-35B type twin screw extruder, at the temperature (barrel temperature is 200 DEG C, and head temperature is 220 DEG C) of 200 DEG C, melt blending, extruding pelletization is carried out.After pellet is dried, pipe extruder groups carries out tube extrusion at the temperature of 180-250 DEG C, and gained pipe diameter is 100mm, and wall thickness is 5.8mm, smooth in appearance.
Comparative example 1
Take polypropylene (MFI is 18g/10min) 4kg, carbon black 160g and various auxiliary agent to be placed in high-speed mixer and to mix, then on pipe extruder groups, at the temperature of 220 DEG C, carry out tube extrusion, can not extrude that diameter is 100mm, wall thickness is the tubing of 6.0mm smoothly.
Test according to the mechanical property of existing national standards to the tubing obtained by embodiment 1 ~ 3 and comparative example, result is as follows:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | |
| Modulus in flexure, MPa | 1460 | 1638 | 1598 | 822 |
| Tensile strength, MPa | 31.2 | 35.7 | 33.4 | 16.2 |
Claims (6)
1. a polypropene composition, is characterized in that, described composition is made up of the compound of following weight part:
Polymer grade polypropylene 40-80,
Chemical degradation polypropylene 15-30,
Polyethylene 4,
Ethylene/alpha-olefin copolymer 5-10,
Block copolymerization polypropylene 30-35,
Ethylenic copolymer rubber 5-8,
Auxiliary agent 3-7,
The melt flow index of described polymer grade polypropylene is 7-20g/10min,
The polyacrylic melt flow index of described chemical degradation is 20-50g/10min,
Described poly density is 0.915-0.965g/cm
3,
The density of described ethylene/alpha-olefin copolymer is 0.860-0.915g/cm
3,
The melt flow rate (MFR) of described block copolymerization polypropylene is between 3g/10min, and molecular weight distributing index PDI is between 3 ~ 4, and ethylene content is between 7-8wt%.
2. polypropene composition according to claim 1, it is characterized in that, the melt flow index of described polymer grade polypropylene is 9-12g/10min.
3. polypropene composition according to claim 1, it is characterized in that, the alpha-olefin in described ethylene/alpha-olefin copolymer is amylene-1, hexene-1, octene-1 or 4-methylpentene-1.
4. polypropene composition according to claim 1, it is characterized in that, described ethylenic copolymer rubber is ethylene-butene copolymer rubber, ethylene-octene copolymer rubber, ethylene-propylene copolymer rubber, composition containing one or more in the rubber of vinyl aromatic compounds.
5. the polypropylene pipe prepared by claim 1 ~ 4 any one search polypropene composition, it is characterized in that, polymer grade polypropylene 40-80 part, chemical degradation polypropylene 15-30 part, polyethylene 4 parts, ethylene/alpha-olefin copolymer 5-10 part, block copolymerization polypropylene 30-35, ethylenic copolymer rubber 5-8 part and auxiliary agent 3-7 part are put into material premixing device, mix, form mixture; The mixture of formation is put into forcing machine, under the temperature condition of 200 DEG C, makes material melts mix; The uniform material of melting mixing is extruded at 220 DEG C through former, and cooling and shaping obtains.
6. polypropylene pipe according to claim 5, it is characterized in that, described tube wall thickness is 5.8-6.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936729.4A CN105385034A (en) | 2015-12-15 | 2015-12-15 | Polypropylene composition and pipe prepared from polypropylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936729.4A CN105385034A (en) | 2015-12-15 | 2015-12-15 | Polypropylene composition and pipe prepared from polypropylene composition |
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| Publication Number | Publication Date |
|---|---|
| CN105385034A true CN105385034A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510936729.4A Pending CN105385034A (en) | 2015-12-15 | 2015-12-15 | Polypropylene composition and pipe prepared from polypropylene composition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106233844A (en) * | 2016-07-30 | 2016-12-21 | 山东胜伟园林科技有限公司 | A kind of application in hidden pipe salt discharge method and northeastward soda alkaline land improvement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247207A (en) * | 1999-09-24 | 2000-03-15 | 中国科学院化学研究所 | Polypropylene composition and its pipes |
| CN1272512A (en) * | 2000-05-24 | 2000-11-08 | 中国科学院化学研究所 | Polypropylene resin composite, its preparation method and application |
| CN1515619A (en) * | 2003-01-08 | 2004-07-28 | 中国科学院化学研究所 | Polypropylene resin composite, its production method and application |
-
2015
- 2015-12-15 CN CN201510936729.4A patent/CN105385034A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247207A (en) * | 1999-09-24 | 2000-03-15 | 中国科学院化学研究所 | Polypropylene composition and its pipes |
| CN1272512A (en) * | 2000-05-24 | 2000-11-08 | 中国科学院化学研究所 | Polypropylene resin composite, its preparation method and application |
| CN1515619A (en) * | 2003-01-08 | 2004-07-28 | 中国科学院化学研究所 | Polypropylene resin composite, its production method and application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106233844A (en) * | 2016-07-30 | 2016-12-21 | 山东胜伟园林科技有限公司 | A kind of application in hidden pipe salt discharge method and northeastward soda alkaline land improvement |
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Application publication date: 20160309 |
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