CN104448477A - High-oxygen-resistant PE gas pipe material and application thereof to high-oxygen-resistant PE gas pipe - Google Patents
High-oxygen-resistant PE gas pipe material and application thereof to high-oxygen-resistant PE gas pipe Download PDFInfo
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- CN104448477A CN104448477A CN201410665578.9A CN201410665578A CN104448477A CN 104448477 A CN104448477 A CN 104448477A CN 201410665578 A CN201410665578 A CN 201410665578A CN 104448477 A CN104448477 A CN 104448477A
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- hdpe
- density polyethylene
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- oxygen
- high density
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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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
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The invention relates to a high-oxygen-resistant PE gas pipe material. The high-oxygen-resistant PE gas pipe material is composed of the following raw materials in parts by weight: 100 parts of high-density polyethylene, 20-30 parts of cross-linked high-density polyethylene, 5-10 parts of ethylene-ethanol copolymers, 2-3 parts of carbon black and 0.5 part of antioxidant, wherein high-density polyethylene has the density of 0.93-0.96kg/m<3> and the melt mass flow speed of 0.2-1.4g/10min, and cross-linked high-density polyethylene has the density of 0.95-0.97kg/m<3> and the melt mass flow speed of 0.01-0.02g/10min. By using the high-oxygen-resistant PE gas pipe prepared from the high-oxygen-resistant PE gas pipe material provided by the invention, the permeation of oxygen outside the high-oxygen-resistant PE gas pipe can be effectively insulated, and the oxygen resistance of the PE gas pipe can be improved.
Description
Technical field
The present invention relates to a kind of PE combustion gas tubing, particularly relate to a kind of high resistant oxygen PE combustion gas tubing and the application in high resistant oxygen PE gas line thereof.
Background technology
Along with the development of technology, PE gas line has started to replace traditional metallic gas pipe.Produce PE combustion gas tubing raw material in prior art and be generally PE80 and PE100 mixed ingredients.GB 15558.1-2003 defines the correlated performance of PE mixed ingredients, but does not specify the barrier property of the oxygen of the preparation-obtained tubing of PE mixed ingredients clearly.The transmission coefficient of PE gas pipeline to oxygen is higher, but the pipeline major part of conveying inflammable gas is PE gas pipeline at present, and this just requires that PE gas pipeline has higher safety performance, and thus the blocking oxygen performance of pipeline also can not be ignored.The transmission coefficient of PE gas pipeline to oxygen on existing market is higher, and in life-time service process, in air, oxygen is combined with combustion gas in managing from pipe exosmosis to PE, thus affects the purity of combustion gas, even produces potential safety hazard.Therefore, improve to reduce its transmission coefficient to oxygen to PE gas pipeline, the flame retardant resistance increasing PE gas pipeline is significant.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of high resistant oxygen PE combustion gas tubing, the high resistant oxygen PE gas line that this high resistant oxygen PE combustion gas tubing prepares can the infiltration of effective obstructing tube external oxygen, improves the oxygen resistance of PE gas line.
Another object of the present invention is to provide the application of above-mentioned high resistant oxygen PE combustion gas tubing in high resistant oxygen PE gas line.
Another object of the present invention is to the preparation method that above-mentioned high resistant oxygen PE gas line is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: high density polyethylene(HDPE) 100 parts, crosslinked high density polyethylene(HDPE) 20 ~ 30 parts, ethylene-vinyl alcohol copolymer 5 ~ 10 parts, carbon black 2 ~ 3 parts, 0.5 part, oxidation inhibitor;
Wherein, the density of described high density polyethylene(HDPE) is 0.93 ~ 0.96kg/m
3, melt mass flow rate is that (in the present invention, melt flow rate (MFR) is at 190 DEG C to 0.2 ~ 1.4g/10min, and under the load of 2.16kg, measuring and calculating is fixed
); The density of described crosslinked high density polyethylene(HDPE) is 0.95 ~ 0.97kg/m
3, melt mass flow rate is 0.01 ~ 0.02g/10min.
Described high density polyethylene(HDPE) is in the present invention the high density polyethylene(HDPE) that Non-crosslinked is crossed, and described crosslinked high density polyethylene(HDPE) is crosslinked for passing through, and forms the high density polyethylene(HDPE) of network structure; Preferably, the trade names of described crosslinked high density polyethylene(HDPE) are Korea S LG chemistry XL1800.
In the present invention, contriver finds through overtesting, and when not adding crosslinked high density polyethylene(HDPE), the consistency of high density polyethylene(HDPE) and ethylene-vinyl alcohol copolymer is very poor; And when adding crosslinked high density polyethylene(HDPE), the consistency of high density polyethylene(HDPE) and ethylene-vinyl alcohol copolymer is better, this is mainly because crosslinked high density polyethylene(HDPE) has crosslinking structure, ethylene-vinyl alcohol copolymer molecular energy is inserted in network structure and also forms fine and close barrier layer, improves the barrier property of PE combustion gas tubing.Contriver also once attempted the barrier agent with other, as poly(vinylidene chloride) PVDC and PVAC polyvinylalcohol, the mixed effect of the former and crosslinked high density polyethylene(HDPE) is poor, there is decomposed phenomenon in the latter, other barrier agent all fails to reach the effect that crosslinked high density polyethylene(HDPE) that the present invention limits reaches after high temperature is extruded.
Contriver also finds that the mass ratio of crosslinked high density polyethylene(HDPE), ethylene-vinyl alcohol copolymer, high density polyethylene(HDPE) affects larger on the mechanical property of PE combustion gas tubing and oxygen barrier property, after a large amount of experimental studies, tubing can be made to have higher mechanical property and good oxygen-barrier property when being controlled within the scope of 10:2 ~ 3:0.5 ~ 1 by the mass ratio of described crosslinked high density polyethylene(HDPE), ethylene-vinyl alcohol copolymer, high density polyethylene(HDPE) simultaneously.
Preferably, described high density polyethylene(HDPE) is PE100 or PE80.
The application in high resistant oxygen PE gas line prepared by described high resistant oxygen PE combustion gas tubing.
The preparation method of above-mentioned high resistant oxygen PE gas line, described preparation method comprises the steps:
S1: high density polyethylene(HDPE) 100 parts, crosslinked high density polyethylene(HDPE) 20 ~ 30 parts, ethylene-vinyl alcohol copolymer 5 ~ 10 parts, carbon black 2 ~ 3 parts, 0.5 part, oxidation inhibitor are taken in proportion;
S2: above-mentioned material is added high-speed mixer mix and blend, then joins twin screw extruder and melt extrudes granulation;
S3: step S2 gained granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE gas line after cutting.
Preferably, the rotating speed of described high-speed mixer is 900r/min, is uniformly mixed 10min.
Compared with prior art, the present invention has following beneficial effect: the present invention is under the prerequisite of mechanical property not affecting PE combustion gas tubing, high density polyethylene(HDPE) is cross-linked by selecting suitable oxygen obstruction agent, and by regulating the mass ratio of crosslinked high density polyethylene(HDPE), ethylene-vinyl alcohol copolymer and high density polyethylene(HDPE), obtain a kind of formula of high resistant oxygen PE combustion gas tubing; PE combustion gas tubing of the present invention effectively improves the oxygen barrier of PE combustion gas tubing, keeps the performance of pipe applications simultaneously, and preparation technology is simple, has broad application prospects.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.Unless stated otherwise, involved in embodiment material, method are the conventional materials and methods in this area.
The main raw material source of using in embodiment:
HDPE, Maoming Petrochemical TR480;
PE-X, Korea S LG chemistry XL1800;
EVOH, Kuraray F100;
Oxidation inhibitor, H264 (BHT).
embodiment 1
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, PE-X are cross-linked high density polyethylene(HDPE) 20 parts, EVOH ethylene-vinyl alcohol copolymer 5 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor, wherein said PE-X be cross-linked high density polyethylene(HDPE), EVOH ethylene-vinyl alcohol copolymer, HDPE high density polyethylene(HDPE) mass ratio be 4:1:20.
The preparation method of above-mentioned high resistant oxygen PE gas line, described preparation method comprises the steps:
S1: high density polyethylene(HDPE) 100 parts, crosslinked high density polyethylene(HDPE) 20 ~ 30 parts, ethylene-vinyl alcohol copolymer 5 ~ 10 parts, carbon black 2 ~ 3 parts, 0.5 part, oxidation inhibitor are taken in proportion;
S2: above-mentioned material is added high-speed mixer and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min;
S3: step S2 gained granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE gas line after cutting.
embodiment 2
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, PE-X are cross-linked high density polyethylene(HDPE) 30 parts, EVOH ethylene-vinyl alcohol copolymer 10 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor, wherein said PE-X be cross-linked high density polyethylene(HDPE), EVOH ethylene-vinyl alcohol copolymer, HDPE high density polyethylene(HDPE) mass ratio be 3:1:10.
Preparation method in the present embodiment is with embodiment 1.
embodiment 3
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, PE-X are cross-linked high density polyethylene(HDPE) 25 parts, EVOH ethylene-vinyl alcohol copolymer 8 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor, wherein said PE-X be cross-linked high density polyethylene(HDPE), EVOH ethylene-vinyl alcohol copolymer, HDPE high density polyethylene(HDPE) mass ratio be 25:8:100.
Preparation method in the present embodiment is with embodiment 1.
reference examples 1
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor.
The preparation method of above-mentioned high resistant oxygen PE combustion gas tubing is realized by following steps:
HDPE, carbon black, oxidation inhibitor are taken in proportion, adds high-speed mixer together and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min.Granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE combustion gas tubing after cutting.
reference examples 2
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, EVOH ethylene-vinyl alcohol copolymer 5 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor.
HDPE, EVOH ethylene-vinyl alcohol copolymer, carbon black, oxidation inhibitor are taken in proportion, adds high-speed mixer together and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min.Granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE combustion gas tubing after cutting.
reference examples 3
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, EVOH ethylene-vinyl alcohol copolymer 10 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor.
HDPE, EVOH ethylene-vinyl alcohol copolymer, carbon black, oxidation inhibitor are taken in proportion, adds high-speed mixer together and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min.Granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE combustion gas tubing after cutting.
reference examples 4
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, PE-X are cross-linked high density polyethylene(HDPE) 20 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor.
HDPE, PE-X are cross-linked high density polyethylene(HDPE), carbon black, oxidation inhibitor takes in proportion, add high-speed mixer together and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min.Granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE combustion gas tubing after cutting.
reference examples 5
A kind of high resistant oxygen PE combustion gas tubing, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: HDPE high density polyethylene(HDPE) 100 parts, PE-X are cross-linked high density polyethylene(HDPE) 30 parts, carbon black 2.5 parts, 0.5 part, oxidation inhibitor.
HDPE, PE-X are cross-linked high density polyethylene(HDPE), carbon black, oxidation inhibitor takes in proportion, add high-speed mixer together and melt extrude granulation mixture is joined parallel co-rotating twin screw extruder after 900r/min rotating speed mixing 10min.Granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE combustion gas tubing after cutting.
The PE gas line that PE combustion gas tubing embodiment 1 ~ 3, reference examples 1 ~ 5 provided prepares carries out measuring mechanical property and oxygen barrier property test, and experimental data is as table 1:
Table 1
As shown in Table 1, by the detection to extruding pipe material, the PE gas line properties prepared by PE combustion gas tubing of the present invention all meets GB 15558.1-2003 standard-required.Do not add crosslinked high density polyethylene(HDPE) and ethylene-vinyl alcohol copolymer in reference examples 1, the PE combustion gas tubing oxygen barrier property that it prepares is the poorest, cannot apply it to the conveying of inflammable gas; Reference examples 2 and reference examples 3 are after extruding pelletization, and pellet manifests uneven black and white phase, and the consistency of high density polyethylene(HDPE) and ethylene-vinyl alcohol copolymer is very poor, resistance oxygen DeGrain; Do not add ethene and ethylene-vinyl alcohol copolymer in reference examples 4 and reference examples 5, though high density polyethylene(HDPE) can mix uniformly with crosslinked high density polyethylene(HDPE), but almost there is no oxygen obstruction effect.As shown in Table 1, the oxygen resistance of high resistant oxygen PE combustion gas tubing provided by the invention is significantly improved than common PE gas line.
Claims (7)
1. a high resistant oxygen PE combustion gas tubing, it is characterized in that, described high resistant oxygen PE combustion gas tubing is made up of the raw material of following weight part: high density polyethylene(HDPE) 100 parts, crosslinked high density polyethylene(HDPE) 20 ~ 30 parts, ethylene-vinyl alcohol copolymer 5 ~ 10 parts, carbon black 2 ~ 3 parts, 0.5 part, oxidation inhibitor;
Wherein, the density of described high density polyethylene(HDPE) is 0.93 ~ 0.96kg/m
3, melt mass flow rate is 0.2 ~ 1.4g/10min; The density of described crosslinked high density polyethylene(HDPE) is 0.95 ~ 0.97kg/m
3, melt mass flow rate is 0.01 ~ 0.02g/10min.
2. high resistant oxygen PE combustion gas tubing according to claim 1, is characterized in that, the trade names of described crosslinked high density polyethylene(HDPE) are Korea S LG chemistry XL1800.
3. high resistant oxygen PE combustion gas tubing according to claim 1 and 2, it is characterized in that, the mass ratio of described crosslinked high density polyethylene(HDPE), ethylene-vinyl alcohol copolymer, high density polyethylene(HDPE) is 10:2 ~ 3:0.5 ~ 1.
4. high resistant oxygen PE combustion gas tubing according to claim 1 and 2, it is characterized in that, described high density polyethylene(HDPE) is PE100 or PE80.
5. the application in high resistant oxygen PE gas line prepared by high resistant oxygen PE combustion gas tubing according to claim 1.
6. a preparation method for high resistant oxygen PE gas line, is characterized in that, described preparation method comprises the steps:
S1: high density polyethylene(HDPE) 100 parts, crosslinked high density polyethylene(HDPE) 20 ~ 30 parts, ethylene-vinyl alcohol copolymer 5 ~ 10 parts, carbon black 2 ~ 3 parts, 0.5 part, oxidation inhibitor are taken in proportion;
S2: above-mentioned material is added high-speed mixer mix and blend, then joins twin screw extruder and melt extrudes granulation;
S3: step S2 gained granulation material dropped into single screw extrusion machine is extruded through melting, die orifice, cools, stretched, coding, namely obtain high resistant oxygen PE gas line after cutting.
7. the preparation method of high resistant oxygen PE gas line according to claim 6, it is characterized in that, the rotating speed of described high-speed mixer is 900r/min, is uniformly mixed 10min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410665578.9A CN104448477B (en) | 2014-11-19 | 2014-11-19 | A kind of high resistant oxygen PE combustion gas tubing and the application in high resistant oxygen PE Gas Pipe thereof |
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| CN201410665578.9A CN104448477B (en) | 2014-11-19 | 2014-11-19 | A kind of high resistant oxygen PE combustion gas tubing and the application in high resistant oxygen PE Gas Pipe thereof |
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| CN104448477A true CN104448477A (en) | 2015-03-25 |
| CN104448477B CN104448477B (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329564A (en) * | 2018-02-12 | 2018-07-27 | 贵州凯科特材料有限公司 | A kind of high-barrier polythene material and preparation method thereof |
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| US7534829B2 (en) * | 2002-02-26 | 2009-05-19 | Kuraray Co., Ltd. | Resin composition and multi-layer structures |
| CN101735537A (en) * | 2009-12-22 | 2010-06-16 | 广州鹿山新材料股份有限公司 | Blended material of ethylene-vinyl alcohol copolymer and high-density polyethylene and method for preparing same |
| CN102691832A (en) * | 2012-06-12 | 2012-09-26 | 上海清远管业科技有限公司 | Glass fiber enhanced high-density polyethylene (HDPE) double-walled winding pipe and manufacture method thereof |
| CN103319765A (en) * | 2012-03-22 | 2013-09-25 | 金发科技股份有限公司 | Conductive barrier polyethylene composition, its preparation method and application |
| CN103881217A (en) * | 2014-04-10 | 2014-06-25 | 太仓市晨洲塑业有限公司 | Flame-retardant antistatic PE pipe |
-
2014
- 2014-11-19 CN CN201410665578.9A patent/CN104448477B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7534829B2 (en) * | 2002-02-26 | 2009-05-19 | Kuraray Co., Ltd. | Resin composition and multi-layer structures |
| CN101735537A (en) * | 2009-12-22 | 2010-06-16 | 广州鹿山新材料股份有限公司 | Blended material of ethylene-vinyl alcohol copolymer and high-density polyethylene and method for preparing same |
| CN103319765A (en) * | 2012-03-22 | 2013-09-25 | 金发科技股份有限公司 | Conductive barrier polyethylene composition, its preparation method and application |
| CN102691832A (en) * | 2012-06-12 | 2012-09-26 | 上海清远管业科技有限公司 | Glass fiber enhanced high-density polyethylene (HDPE) double-walled winding pipe and manufacture method thereof |
| CN103881217A (en) * | 2014-04-10 | 2014-06-25 | 太仓市晨洲塑业有限公司 | Flame-retardant antistatic PE pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329564A (en) * | 2018-02-12 | 2018-07-27 | 贵州凯科特材料有限公司 | A kind of high-barrier polythene material and preparation method thereof |
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