CN103756092B - High pressure resistant PE flexible pipe of thin-walled and preparation method thereof - Google Patents
High pressure resistant PE flexible pipe of thin-walled and preparation method thereof Download PDFInfo
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- CN103756092B CN103756092B CN201410008449.2A CN201410008449A CN103756092B CN 103756092 B CN103756092 B CN 103756092B CN 201410008449 A CN201410008449 A CN 201410008449A CN 103756092 B CN103756092 B CN 103756092B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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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
- C08L2205/02—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- 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
- C08L2207/066—LDPE (radical process)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides high pressure resistant PE flexible pipe of thin-walled and preparation method thereof, prepared obtaining by the component comprising following weight per-cent: the high density polyethylene(HDPE) of 35 ~ 45%; The Low Density Polyethylene of 10 ~ 22%; The linear low density polyethylene of 20 ~ 30%; The modified aluminas of 6 ~ 20%; The fluoropolymer auxiliary agent PPA functional master batch of 0.5 ~ 4%.The present invention by adding modified aluminas to improve the thermal conductivity of PE flexible pipe in formula, thus improve the weathering resistance of PE flexible pipe, the interpolation of modified aluminas improves the tensile strength of material simultaneously, thus is ensureing the object achieving the reduction of PE thickness of soft tube under the prerequisite that product property indices is qualified.
Description
Technical field
The invention belongs to polyethylene (PE) flexible pipe manufacturing technology field, particularly relate to high pressure resistant PE flexible pipe of thin-walled and preparation method thereof.
Background technology
The water-saving irrigation technique that China is promoting the use of has more than tens of remaining kind, mainly contains pipe filling, sprinkling irrigation, drip irrigation, microspray irrigation, infiltrating irrigation and sub-irrigation etc.All need to use a large amount of agricultural PE delivery hoses in above several high-efficient irrigation mode is as water saving irrigation such as drip irrigation, pipe fillings.
But producing at present both at home and abroad the technology of agricultural PE delivery hose, is mostly continue to use common extrusion process, and produce by single model polyethylene raw material, also exist that weathering resistance is poor, intensity is low, wall thickness is thicker and the problem such as meter Chong Gao.
Therefore, research and develop the high withstand voltage PE flexible pipe of thin-walled and production technique, brute force technique support is provided to the fast development promoting China's agricultural water-saving irrigation technology, to the industrialization development promoting China's agricultural water-saving irrigation technical study and product, especially effectively water resources is utilized for the northwest arid area containment deterioration of the ecological environment, realize Sustainable development that is economic and society, there is very far-reaching realistic meaning.
Summary of the invention
First goal of the invention of the present invention is to provide thin-walled high pressure resistant PE flexible pipe, changes the performance of PE flexible pipe by adding modified aluminas in formula.
To achieve these goals, adopting following technical scheme, the high pressure resistant PE flexible pipe of thin-walled, is be prepared from by the component comprising following weight per-cent:
The high density polyethylene(HDPE) of (1) 35 ~ 45%;
The Low Density Polyethylene of (2) 10 ~ 22%;
The linear low density polyethylene of (3) 20 ~ 30%;
The modified aluminas of (4) 6 ~ 20%;
The fluoropolymer auxiliary agent PPA functional master batch of (5) 0.5 ~ 4%.
Preferably, the high pressure resistant PE flexible pipe of thin-walled, prepared by the component comprising following weight per-cent and obtain:
The high density polyethylene(HDPE) of (1) 40 ~ 42%;
The Low Density Polyethylene of (2) 15 ~ 17%;
The linear low density polyethylene of (3) 24 ~ 26%;
The modified aluminas of (4) 11 ~ 13%;
The fluoropolymer auxiliary agent PPA functional master batch of (5) 1 ~ 3%.
Preferably, the order number of described modified aluminas is 600-1500 order.
Preferably, described component also comprises the polyethylene black master batch that the weight percent of adjustable colors is 2 ~ 5%.
Second goal of the invention of the present invention is the preparation method providing the high pressure resistant PE flexible pipe of thin-walled, to produce the product that first goal of the invention provides.
In order to realize foregoing invention object, adopt following technical scheme, the preparation method of the high pressure resistant PE flexible pipe of thin-walled, comprises the steps:
(1) weigh by each component proportion of described thin-walled high pressure resistant PE flexible pipe;
(2) load weighted each component high-speed mixing is even, obtain compound;
(3) by described compound successively through plastic granulator granulation, drying, vacuum feeding, hopper oven dry, forcing machine extruding pipe embryo, vacuum cooling, shaping guide wheel, blowing sizing, cooling, traction, rolling cutting after, obtain finished product.
Preferably, described in step (3), the temperature of plastic granulator granulation is 180-230 DEG C, and the temperature that hopper is dried is 90 DEG C.
The advantage that the present invention has and positively effect are:
1, the present invention by adding modified aluminas to improve the thermal conductivity of PE flexible pipe in formula, thus improve the weathering resistance of PE flexible pipe, the interpolation of modified aluminas improves the tensile strength of material simultaneously, thus is ensureing the object achieving the reduction of PE thickness of soft tube under the prerequisite that product property indices is qualified.
2, the present invention is by adding fluoropolymer auxiliary agent PPA functional master batch, better improves the rheological of material, processing characteristics etc., well improves the visual appearance of product.
3, the present invention utilizes the production technique biaxial stretch-formed to polymer-extruded production technique and macromolecular material orientation production technology combined, the aspects such as its mechanical property, optical property, thermal conductivity are made to there occurs significant change to PE material by diaxial orientation production technique, therefore this production technique not only increases product tensile yield strength, resistance to hydrostatic strength, better improves its weathering resistance simultaneously.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
One, material source:
High density polyethylene(HDPE), Low Density Polyethylene, linear low density polyethylene is all purchased from China PetroChemical Corporation.Wherein, linear low density polyethylene is ethene and a small amount of 1-butylene is a kind of multipolymer that comonomer is polymerized under catalyst action.
Modified aluminas is purchased from snow mountain Trade Co., Ltd. of Zhengzhou City.
Fluoropolymer auxiliary agent PPA functional master batch is purchased from Jiangsu Lian Su macromolecular material company limited, PPA is a series of polymer processing aidses based on fluoropolymer, and this product mainly by difluoroethylene (VDF) and R 1216 (HFP), copolyreaction occurs and obtains.PPA can be used to the processibility improving Low Density Polyethylene, linear low density polyethylene, high density polyethylene(HDPE), polypropylene and other resin, can not have an impact, be mainly used in blown film, tube extrusion, the technical fields such as blowing to the physical and mechanical properties of matrix resin.
Polyethylene black master batch is purchased from Jin Yi plastic material factory of Suzhou City.
Two, equipment:
Granulation die: molding machine company limited of Yongxin of Zhangjagang City;
Plastic granulator: molding machine company limited of Yongxin of Zhangjagang City;
Injection moulding machine: Ningbo Haitian Plastics Machinery Group Co., Ltd;
Dryer: Machinery Co., Ltd. is moulded by Zhangjagang City ten thousand.
Embodiment 1
The high pressure resistant PE flexible pipe of thin-walled, by following weight per-cent component prepare and obtain: the high density polyethylene(HDPE) of 37%, the Low Density Polyethylene of 20%, 29% linear low density polyethylene, the modified aluminas of 8%, the fluoropolymer auxiliary agent PPA functional master batch of 3% and 3% polyethylene black master batch.
Wherein, the particle diameter of modified aluminas is 800 orders.
Select the reason of modified aluminas to be, aluminum oxide is by bauxitic clay raw material through chemical treatment, and removing the oxide compound of silicon, iron, titanium etc. and obtain, is the alumina raw material that purity is very high, Al
2o
3content is generally more than 99%, but unmodified aluminum oxide and macromolecular material physical and chemical performance have greatest differences, and easily to cause in recombination process wettability between different components poor, composite quality is not high.Modified aluminas is obtained by the method for surface chemical modification, chemical reaction is carried out or chemisorption mode completes by surface-modifying agent and aluminum oxide powder surface, conventional surface-modifying agent has coupling agent, higher fatty acid and salt thereof, unsaturated organic acid and organosilicon etc., modified aluminum oxide becomes functional inorganic filling, it is blended in organic polymer matrix, there is very large contribution to the performance improving aluminum oxide and polymer composite.
Realize the preparation method of the high pressure resistant PE flexible pipe of described thin-walled, comprise the following steps:
(1) weigh by each component proportion of described thin-walled high pressure resistant PE flexible pipe;
(2) load weighted each component high-speed mixing is even, obtain compound;
(3) by described compound successively through plastic granulator granulation, drying, vacuum feeding, hopper oven dry, forcing machine extruding pipe embryo, vacuum cooling, shaping guide wheel, blowing sizing, cooling, traction, rolling cutting after, get product.
Wherein, described in step (3), the temperature of plastic granulator granulation is 180-230 DEG C; The temperature that hopper is dried is 90 DEG C; Forcing machine and head production temperature are divided into five sections, are respectively:
The temperature of barrel first paragraph is 180 °, and the temperature of barrel second segment is 200 °, and the temperature that barrel is the 3rd section is 210 °, and the temperature of head first paragraph is 225 °, and the temperature of head second segment is 230 °.
In addition, what the present invention adopted is the production technique that polymer-extruded production technique combines with the biaxial stretch-formed orientation production technology of macromolecular material, wherein, biaxial stretch-formed orientation production technique is: after tubing extrudes pipe by forcing machine, through vacuum sizing sleeve and chilling spray case cooling and shaping, enter heating zone through towing mechanism, be heated to more than second-order transition temperature, fill in expansion core by force; Tubing after expansion core cone section by radial drawing, simultaneously due to the brute force traction of tractor by axial tension, by the straight right cylinder cooling and shaping of expansion core cone continuous print.Adopt this technique to make the aspects such as the mechanical property of PE pipe, optical property, thermal conductivity there occurs significant change, not only increase the tensile yield strength of product, resistance to hydrostatic strength, better improve its weathering resistance simultaneously.
Embodiment 2
The high pressure resistant PE flexible pipe of thin-walled, prepared by the component of following weight per-cent and obtain: the high density polyethylene(HDPE) of 41%, the Low Density Polyethylene of 16%, 25% linear low density polyethylene, particle diameter be the modified aluminas of 1000 objects 12%, the fluoropolymer auxiliary agent PPA functional master batch of 2% and 4% polyethylene black master batch.
Realize the preparation method of the high pressure resistant PE flexible pipe of described thin-walled with embodiment 1.
Embodiment 3
The high pressure resistant PE flexible pipe of thin-walled, prepared by the component of following weight per-cent and obtain: the high density polyethylene(HDPE) of 43%, the Low Density Polyethylene of 12%, 21% linear low density polyethylene, particle diameter be the modified aluminas of 1300 objects 18%, the fluoropolymer auxiliary agent PPA functional master batch of 1% and 5% polyethylene black master batch.
Realize the preparation method of the high pressure resistant PE flexible pipe of described thin-walled with embodiment 1.
Embodiment 4
The high pressure resistant PE flexible pipe of thin-walled, prepared by the component of following weight per-cent and obtain: the high density polyethylene(HDPE) of 41%, the Low Density Polyethylene of 16%, 26% linear low density polyethylene, particle diameter be the modified aluminas of 600 objects 15%, the fluoropolymer auxiliary agent PPA functional master batch of 2%.
Realize the preparation method of the high pressure resistant PE flexible pipe of described thin-walled with embodiment 1.
The performance perameter of the PE flexible pipe adopting this kind of method to prepare is as shown in the table with the performance perameter of the PE flexible pipe not adding modified aluminas.
It should be noted that, below test according to standard be feedwater polyethylene (PE) tubing GB/T13663-2000.
The PE tubing sample not adding modified aluminas is the same with the preparation method of other embodiment samples, be the high density polyethylene(HDPE) of 44% by weight percent, the Low Density Polyethylene of 20%, the linear low density polyethylene of 29%, the fluoropolymer auxiliary agent PPA functional master batch of 3% and the polyethylene black master batch of 4% prepare.
As can be seen from the above table, in formula, add the thermal conductivity that modified aluminas improves PE flexible pipe, improve the tensile strength of material simultaneously, thus ensure the object achieving the reduction of PE thickness of soft tube under the prerequisite that product property indices is qualified.
Claims (7)
1. the high pressure resistant PE flexible pipe of thin-walled, is characterized in that: prepared obtaining by the component comprising following weight per-cent:
The high density polyethylene(HDPE) of (1) 35 ~ 45%;
The Low Density Polyethylene of (2) 10 ~ 22%;
The linear low density polyethylene of (3) 20 ~ 30%;
The modified aluminas of (4) 6 ~ 20%;
The fluoropolymer auxiliary agent PPA functional master batch of (5) 0.5 ~ 4%;
Described modified aluminas is obtained by the method for surface chemical modification, carry out chemical reaction by surface-modifying agent and aluminum oxide powder surface or chemisorption mode completes, described surface-modifying agent is coupling agent, higher fatty acid and salt thereof, unsaturated organic acid and organosilicon.
2. the high pressure resistant PE flexible pipe of thin-walled according to claim 1, is characterized in that: prepared obtaining by the component comprising following weight per-cent:
The high density polyethylene(HDPE) of (1) 40 ~ 42%;
The Low Density Polyethylene of (2) 15 ~ 17%;
The linear low density polyethylene of (3) 24 ~ 26%;
The modified aluminas of (4) 11 ~ 13%;
The fluoropolymer auxiliary agent PPA functional master batch of (5) 1 ~ 3%.
3. the high pressure resistant PE flexible pipe of thin-walled according to claim 1, is characterized in that: the weight percent that described component also comprises adjustable colors is the polyethylene black master batch of 2 ~ 5%.
4. the high pressure resistant PE flexible pipe of thin-walled according to claim 2, is characterized in that: the weight percent that described component also comprises adjustable colors is the polyethylene black master batch of 2 ~ 5%.
5., according to the arbitrary described high pressure resistant PE flexible pipe of thin-walled of claim 1-4, it is characterized in that: the order number of described modified aluminas is 600-1500 order.
6. the preparation method of the high pressure resistant PE flexible pipe of thin-walled as described in as arbitrary in claim 1-4, comprises the following steps:
(1) weigh by each component proportion of described thin-walled high pressure resistant PE flexible pipe;
(2) load weighted each component is mixed, obtain compound;
(3) by described compound successively through plastic granulator granulation, drying, vacuum feeding, hopper oven dry, forcing machine extruding pipe embryo, vacuum cooling, shaping guide wheel, blowing sizing, cooling, traction, rolling cutting after, get product.
7. the preparation method of the high pressure resistant PE flexible pipe of thin-walled according to claim 6, is characterized in that: described in step (3), the temperature of plastic granulator granulation is 180-230 DEG C, and the temperature that described hopper is dried is 90 DEG C.
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| CN201410008449.2A CN103756092B (en) | 2014-01-02 | 2014-01-02 | High pressure resistant PE flexible pipe of thin-walled and preparation method thereof |
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| CN201410008449.2A CN103756092B (en) | 2014-01-02 | 2014-01-02 | High pressure resistant PE flexible pipe of thin-walled and preparation method thereof |
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| CN103756092B true CN103756092B (en) | 2015-11-25 |
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| CN104262739B (en) * | 2014-08-14 | 2017-02-01 | 大禹节水（天津）有限公司 | Rat-proof buried drip irrigation pipe and manufacturing method thereof |
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| CN105949736B (en) * | 2016-06-24 | 2018-02-02 | 大禹节水（天津）有限公司 | A kind of anti-drip irrigation zone of burning of double airfoil type |
| CN107286458A (en) * | 2017-08-01 | 2017-10-24 | 合肥安力电力工程有限公司 | A kind of feed pipe and preparation method thereof |
| CN112140645A (en) * | 2019-06-26 | 2020-12-29 | 青岛宏泰铜业有限公司 | Plastic-coated copper pipe |
| CN111977371A (en) * | 2020-08-24 | 2020-11-24 | 陈金海 | Novel disinfection and transmission device for streamlined paper cup machine |
| CN112341686B (en) * | 2020-10-24 | 2023-03-10 | 深圳市鹏展永晟实业有限公司 | Environment-friendly cosmetic hose with high PCR content and manufacturing process thereof |
| CN114085443A (en) * | 2021-11-10 | 2022-02-25 | 佛山市南海区长晟塑料包装有限公司 | Composite hose sheet and composite hose using same |
| CN115160712A (en) * | 2022-09-05 | 2022-10-11 | 广东瑞远新材料有限公司 | High-heat-conductivity and wear-resistant hose material and preparation method thereof |
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| CN1247204A (en) * | 1999-09-24 | 2000-03-15 | 中国科学院化学研究所 | High-density polyethylene composition and its pipe material |
| CN1641309A (en) * | 2004-02-10 | 2005-07-20 | 刘永丰 | Material for manufacturing plastic detonating tube |
| CN102977442A (en) * | 2012-09-18 | 2013-03-20 | 甘肃大禹节水集团股份有限公司 | Special cooper root removing agent for underground drip irrigation, and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007197724A (en) * | 2005-12-28 | 2007-08-09 | Nippon Polyethylene Kk | Polyolefin-based composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247204A (en) * | 1999-09-24 | 2000-03-15 | 中国科学院化学研究所 | High-density polyethylene composition and its pipe material |
| CN1641309A (en) * | 2004-02-10 | 2005-07-20 | 刘永丰 | Material for manufacturing plastic detonating tube |
| CN102977442A (en) * | 2012-09-18 | 2013-03-20 | 甘肃大禹节水集团股份有限公司 | Special cooper root removing agent for underground drip irrigation, and production method thereof |
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