CN104151668A - PE pipe used for steel-plastic composite pipe lining and preparation method of PE pipe - Google Patents
PE pipe used for steel-plastic composite pipe lining and preparation method of PE pipe Download PDFInfo
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- CN104151668A CN104151668A CN201410380079.5A CN201410380079A CN104151668A CN 104151668 A CN104151668 A CN 104151668A CN 201410380079 A CN201410380079 A CN 201410380079A CN 104151668 A CN104151668 A CN 104151668A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a PE pipe used for a steel-plastic composite pipe lining and a preparation method of the PE pipe. The PE pipe comprises the following components in parts by weight: 55-75 parts of HDPE, 15-20 parts of LLDPE, 10-12 parts of nano calcium carbonate, 1.5-3.5 parts of a composite silane coupling agent, 1-2 parts of polyethylene wax, 0.5-1 part of paraffin, and 2.5 parts of color master, wherein the density of the HDPE is 0.947-0.952 kg/m<3>, and the melt index is 0.23-0.25 g/10 min; the density of the LLDPE is 0.922-0.931 kg/m<3>, and the melt index is 5.2-6.3 g/10 min. According to the invention, the material components for preparing the PE pipe and the ratio thereof are changed, so that the shrinking rate of the PE pipe is reduced, the tensile strength, rigidity and tenacity of pipe materials are improved, and the production cost is reduced.
Description
Technical field
The present invention relates to plastic pipe technical field, be specifically related to a kind of PE pipe of moulding pipe liner for steel and preparation method thereof.
Background technology
It is to take steel pipe as matrix that lining is moulded PE steel-plastics composite pipe, adopts plastic coating process, utilizes preheating and secondary heating in medium frequency, will be lined with the PE pipe of hot melt adhesive, in steel duct, makes hot melt adhesive thawing and bonding.The advantage such as the existing metal tube intensity of this tubing is high, good rigidly, percent thermal shrinkage are low, have again the health of plastic pipe, to water non-secondary pollution, the advantage such as corrosion-resistant, the shortcoming such as overcome that pure plastic pipe intensity is low, poor rigidity, easily distortion, expanded by heating rate be large, and external force resistance destructiveness is low.Because galvanized pipe has had very long applicating history and very ripe application experience, line plastic-steel tube can be continued to use the standard of galvanized pipe, so design and installation standard is complete in addition, and the complete maturation of construction regulations is easily user and accepts.At lining, mould in operation, make plastic conduit dimensional change, and there is the memory function of thermal contraction, if internal lining pipe is too thin bonding not firm with steel pipe, the blocked up production cost that increases again of internal lining pipe; PE material contracts rate is larger in addition, easily causes inner plastic to come off in actual application.Therefore, develop that a kind of shrinking percentage is lower, cost is low and performance meets steel and moulds the PE pipe of pipe liner needs and seem very necessary.
Summary of the invention
The object of the present invention is to provide a kind of PE pipe of moulding pipe liner for steel, by change, prepare component and the proportioning of PE tube material, reduce the shrinking percentage of PE pipe, improved tensile strength, rigidity, the toughness of tubing and reduced production cost.
Another object of the present invention is to provide the above-mentioned preparation method who moulds the PE pipe of pipe liner for steel.
The present invention is achieved by following technical solution:
A kind of PE pipe of moulding pipe liner for steel, described PE pipe is comprised of following component by weight percentage:
45～65 parts of HDPE
15～35 parts of LLDPE
10～22 parts of nano-calcium carbonates
1.5～3.5 parts of compound silane coupling agents
1～2 part of polyethylene wax
0.5～1 part, paraffin
2.5 parts of looks female;
Wherein, the density of described HDPE is 0.947～0.952kg/m3, and melting index is 0.23g～0.25g/10min; The density of described LLDPE is 0.922～0.931 kg/m3, and melting index is 5.2～6.3 g/10min.
Preferably, described PE pipe is comprised of following component by weight percentage:
50～65 parts of HDPE
10～30 parts of LLDPE
8～20 parts of nano-calcium carbonates
2～2.5 parts of compound silane coupling agents
1.2～1.8 parts of polyethylene waxs
0.6～0.8 part, paraffin
2.5 parts of looks female.
Preferably, the granularity of described nano-calcium carbonate is 0.01～0.1 μ m.
Preferably, described compound silane coupling agent is KH-792 and/or A-151.
Preferably, the density of described HDPE is 0.721～0.832kg/m3, and melting index is 0.24g～0.25 g/10min.
Preferably, the density of described LLDPE is 0.658～0.754 kg/m3, and melting index is 5.5～5.8 g/10min.
Compared with prior art, the present invention prepares component and the proportioning of PE tube material by change, reduces the shrinking percentage of PE pipe, has improved tensile strength, rigidity, the toughness of tubing; By by nanon calcium carbonatefilled in masterbatch, nano-calcium carbonate has toughened and reinforced effect, improves flexural strength and the bending elastic modulus of plastics, improves heat-drawn wire and dimensional stability; By the use of compound silane coupling agent, can make whole system there is good consistency, dispersiveness, mobility and processing characteristics after can making nanometer calcium carbonate filling modified PE master batch mix with matrix numerical value; LLDPE can further improve the snappiness of tubing, avoids moulding the folding of operation because of lining and causes folding line, and PE pipe provided by the invention has lower shrinking percentage, good physical strength, and production cost is low, has broad application prospects.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained, but embodiments of the present invention is not limited in any way.Unless stated otherwise, in embodiment, related reagent, method is the conventional reagent in this area and method.
embodiment 1
A kind of PE pipe of moulding pipe liner for steel set forth in the present invention, the raw material of described PE pipe is comprised of HDPE, LLDPE, nano-calcium carbonate, compound silane coupling agent, polyethylene wax, paraffin, look mother.Its manufacture method is first nano-calcium carbonate to be put into high mixer to remove moisture, adds composite coupler mix and blend to put the cooling nano-calcium carbonate obtaining after modification of cold mixer into; By HDPE, LLDPE, polyethylene wax, paraffin put into according to this high-speed mixer and mixing stir and add put cold mixer into after the nano-calcium carbonate mixing and stirring after modification and be cooled to 35 ℃ after discharging, through forcing machine granulation, make the modified master of internal lining pipe, subsequently by this modified master through single screw extrusion machine extrusion moulding, coolingly can obtain finished product.Wherein, the raw material of modified master consists of following composition:
65 parts of HDPE
19 parts of LLDPE
10 parts of nano-calcium carbonates
2 parts of compound silane coupling agent KH-792
1 part of polyethylene wax
0.5 part, paraffin
2.5 parts of looks female;
Wherein, the density of described HDPE is 0.947kg/m3, and melting index is 0.23g/10min; The density of described LLDPE is 0.922 kg/m3, and melting index is 5.2g/10min; Described compound silane coupling agent is the mixture of KH-792 and A-151; The granularity of described nano-calcium carbonate is 0.05 μ m.
The present embodiment, in preparation PE tubing process, has added nano-calcium carbonate and can reduce the cost of PE tubing on the one hand, improves flexural strength and the bending elastic modulus of plastics simultaneously, and heat-drawn wire and dimensional stability, also give plastics stagnant hot.
embodiment 2
The preparation method of the present embodiment is with embodiment 1, and difference is, the raw material of modified master is comprised of following raw material according to weight percent:
60 parts of HDPE
22 parts of LLDPE
10 parts of nano-calcium carbonates
3.5 parts of compound silane coupling agent KH-792
1 part of polyethylene wax
1 part, paraffin
2.5 parts of looks female.
Wherein, the density of described HDPE is 0.952kg/m3, and melting index is 0.25g/10min; The density of described LLDPE is 0.931 kg/m3, and melting index is 6.3 g/10min; Described compound silane coupling agent is KH-792; The granularity of described nano-calcium carbonate is 0.02 μ m order.
embodiment 3
The preparation method of the present embodiment is with embodiment 1, and difference is, the raw material of modified master is comprised of following raw material according to weight percent:
62 parts of HDPE
18 parts of LLDPE
12 parts of nano-calcium carbonates
2.5 parts of compound silane coupling agent A-151
2 parts of polyethylene waxs
1 part, paraffin
2.5 parts of looks female.
Wherein, the density of described HDPE is 0.950kg/m3, and melting index is 0.24g/10min; The density of described LLDPE is 0.928 kg/m3, and melting index is 5.8 g/10min; Described compound silane coupling agent is A-151; The granularity of described nano-calcium carbonate is 0.01 μ m order.
embodiment 4
The preparation method of the present embodiment is with embodiment 1, and difference is, the raw material of modified master is comprised of following raw material according to weight percent:
65 parts of HDPE
16 parts of LLDPE
11.5 parts of nano-calcium carbonates
2 parts of compound silane coupling agent A-151
2 parts of polyethylene waxs
1 part, paraffin
2.5 parts of looks female.
Wherein, the density of described HDPE is 0.948kg/m3, and melting index is 0.24g/10min; The density of described LLDPE is 0.926 kg/m3, and melting index is 5.7 g/10min; Described compound silane coupling agent is KH-792; The granularity of described nano-calcium carbonate is 0.05 μ m.
The PE pipe mechanical property that above-described embodiment prepares is measured according to following measuring method:
Shrinking percentage, tests according to GB/T6671.2-1986 standard;
Flexural strength, tests according to GB/T9341-2008 standard;
Bending elastic modulus, tests according to GB/T9341-2008 standard;
Tensile strength, tests according to GB/T8804.2-1988 standard;
Heat-drawn wire, tests according to GB/T13663.1-2000 standard.
The PE pipe that above-described embodiment is prepared carries out correlated performance test, and the data of specific performance are as following table 1:
。
Above one embodiment of the present of invention are had been described in detail, but described content is only the preferred embodiment of the invention, can not be considered to for limiting the practical range of the invention.All equalization variations of doing according to the invention application range and improvement etc., all should still belong to patent covering scope of the present invention.
Claims (6)
1. a PE pipe of moulding pipe liner for steel, is characterized in that, described PE pipe is comprised of following component by weight percentage:
45～65 parts of HDPE
15～35 parts of LLDPE
10～22 parts of nano-calcium carbonates
1.5～3.5 parts of compound silane coupling agents
1～2 part of polyethylene wax
0.5～1 part, paraffin
2.5 parts of looks female;
Wherein, the density of described HDPE is 0.947～0.952kg/m3, and melting index is 0.23g～0.25g/10min; The density of described LLDPE is 0.922～0.931 kg/m3, and melting index is 5.2～6.3 g/10min.
2. the PE pipe of moulding pipe liner for steel according to claim 1, is characterized in that, described PE pipe is comprised of following component by weight percentage:
50～65 parts of HDPE
10～30 parts of LLDPE
8～20 parts of nano-calcium carbonates
2～2.5 parts of compound silane coupling agents
1.2～1.8 parts of polyethylene waxs
0.6～0.8 part, paraffin
2.5 parts of looks female.
3. the PE pipe of moulding pipe liner for steel according to claim 1 and 2, is characterized in that, the granularity of described nano-calcium carbonate is 0.01～0.1 μ m.
4. the PE pipe of moulding pipe liner for steel according to claim 1, is characterized in that, described compound silane coupling agent is KH-792 and/or A-151.
5. the PE pipe of moulding pipe liner for steel according to claim 1, is characterized in that, the density of described HDPE is 0.721～0.832kg/m3, and melting index is 0.24g～0.25 g/10min.
6. the PE pipe of moulding pipe liner for steel according to claim 1, is characterized in that, the density of described LLDPE is 0.658～0.754 kg/m3, and melting index is 5.5～5.8 g/10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380079.5A CN104151668A (en) | 2014-07-31 | 2014-07-31 | PE pipe used for steel-plastic composite pipe lining and preparation method of PE pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380079.5A CN104151668A (en) | 2014-07-31 | 2014-07-31 | PE pipe used for steel-plastic composite pipe lining and preparation method of PE pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104151668A true CN104151668A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380079.5A Pending CN104151668A (en) | 2014-07-31 | 2014-07-31 | PE pipe used for steel-plastic composite pipe lining and preparation method of PE pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752680A (en) * | 2018-04-04 | 2018-11-06 | 徐雄剑 | A kind of high resiliency HDPE resin and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401694A (en) * | 2002-03-27 | 2003-03-12 | 上海化工研究院 | Special material for modifying extrusion or blow-moulding-class super-high molecular weight polyethylene and preparing process thereof |
| CN1733829A (en) * | 2004-08-13 | 2006-02-15 | 于志文 | Overall plastic microcosmic laminar composite and its preparation method |
| CN101671452A (en) * | 2009-10-10 | 2010-03-17 | 江苏领航材料科技有限公司 | Functional master batch used for HDPE hollow container resisting environmental stress and cracking and preparation method thereof |
| CN102022588A (en) * | 2010-08-27 | 2011-04-20 | 广东联塑科技实业有限公司 | Plastic-lined steel plastic composite tube and manufacturing method thereof |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
-
2014
- 2014-07-31 CN CN201410380079.5A patent/CN104151668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401694A (en) * | 2002-03-27 | 2003-03-12 | 上海化工研究院 | Special material for modifying extrusion or blow-moulding-class super-high molecular weight polyethylene and preparing process thereof |
| CN1733829A (en) * | 2004-08-13 | 2006-02-15 | 于志文 | Overall plastic microcosmic laminar composite and its preparation method |
| CN101671452A (en) * | 2009-10-10 | 2010-03-17 | 江苏领航材料科技有限公司 | Functional master batch used for HDPE hollow container resisting environmental stress and cracking and preparation method thereof |
| CN102022588A (en) * | 2010-08-27 | 2011-04-20 | 广东联塑科技实业有限公司 | Plastic-lined steel plastic composite tube and manufacturing method thereof |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752680A (en) * | 2018-04-04 | 2018-11-06 | 徐雄剑 | A kind of high resiliency HDPE resin and preparation method thereof |
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Application publication date: 20141119 |