CN106947146A - A kind of special tubing of no-dig technique and preparation method thereof - Google Patents
A kind of special tubing of no-dig technique and preparation method thereof Download PDFInfo
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- CN106947146A CN106947146A CN201710271876.3A CN201710271876A CN106947146A CN 106947146 A CN106947146 A CN 106947146A CN 201710271876 A CN201710271876 A CN 201710271876A CN 106947146 A CN106947146 A CN 106947146A
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- mass parts
- density polyethylene
- dig technique
- kaolin
- isocyanates
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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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/005—Hoses, i.e. flexible pipes consisting completely or partially of material other than fibres, plastics or metal
-
- 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- 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
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- 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
-
- 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)
-
- 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
- C08L2207/068—Ultra high molecular weight polyethylene
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of special tubing of no-dig technique and preparation method thereof, including body outer layer and body internal layer, the body outer layer is 3~8mm of thickness PP materials, the body internal layer is 6~10mm of thickness PE composites, and the PE composites include high density polyethylene (HDPE), low density polyethylene (LDPE), superhigh molecular weight polyethylene fibers, the polyurethane microcapsule for including isocyanates, surface modified kaolin and antioxidant.The tubing of the present invention has excellent mechanical property and self-healing capability.
Description
Technical field
The present invention relates to special tubing of a kind of no-dig technique and preparation method thereof.
Background technology
Modern no-dig technique pipe engineering technology is a technological revolution to traditional excavation construction, and it can not destroyed
Road, vegetation and do not influence to carry out underground pipeline construction under environment, transportation condition, efficiently solve railway, river and existing
The problem of pipeline is laid under building, development and upgrading to industries such as electric power, communication and building water supply and drainages have important
Application value, its economy and social effect are notable.Due to no-dig technique pipeline technology have many advantages, such as it is above-mentioned, it obtained compared with
Fast development, application at home and abroad is quite extensive.
Current no-dig technique tube material mainly has polyethylene, polypropylene, polyvinyl chloride, ABS etc..These are not specially treated
Tubing often service life is shorter, and it is higher by its use environment and method to be limited maintenance cost.
The content of the invention
It is a primary object of the present invention to provide a kind of no-dig technique special tubing, possesses certain self-healing capability, especially
It is suitable as drainage pipeline.
To achieve the above objectives, the present invention provides a kind of special tubing of no-dig technique, including body outer layer and body internal layer,
The body outer layer is 3~8mm of thickness PP materials, and the body internal layer is 6~10mm of thickness PE composites, the PE
Composite includes high density polyethylene (HDPE), low density polyethylene (LDPE), superhigh molecular weight polyethylene fibers, includes isocyanates
Polyurethane microcapsule, surface modified kaolin and antioxidant.
The wearability of PP materials and anti-scratch performance are better than PE materials, thus the present invention tubing during poling not
Easily it is scratched, tubing is designed as the service life that double-layer structure is conducive to improving tubing in addition.
It is described include isocyanates polyurethane microcapsule be based on shell made from interfacial polymerization be polyurethane and interior
Portion is the microballoon of isocyanates, and its particle diameter is at 100~400 μm.These uniform microcapsules are distributed in the base, when material internal hair
During raw crackle, polyurethane spherical shell is ruptured, and the isocyanates of the inside storage is flowed out and outside hydrone by capillarity
Have an effect, the product of generation is filled in crack, reconnected Materials Fracture face, so as to realize material internal micro-crack
Self-healing.
The surface modified kaolin is titanate esters modified kaolin.Titanate esters are a kind of conventional coupling agents, and it is acted on
Mechanism is, in kaolin particle surface one layer of unimolecule cover layer of formation, its surface nature is occurred essence change, change is filled out
Expect original hydrophily, the dispersiveness of filler, mobility, raising loading, reduce resin demand, reduce product when improving processing
Cost, while improving processing characteristics, adds product gloss, improves intensity, impact and the fire resistance of composite, carry
High product quality.
Ultra-high molecular weight polyethylene (PE-UHMW) fiber is a kind of high-performance occurred after carbon fiber, aramid fiber
Organic fiber, the characteristics of with low-density, high-modulus, high intensity, its composite material exhibits goes out preferable mechanical property.Due to base
Polyethylene in body is identical with reinforcing fiber material, and the combination between reinforcing fiber and matrix is very close, and excellent compatibility can
To reach no interface.In addition, when tubing is cracked, reinforcing fiber has the effect for preventing that crackle from expanding, to tubing from
Healing also functions to the effect of auxiliary.
Preferably, surface modified kaolin is prepared by the following method：By high-speed mixer be preheating to organism temperature 60~
80 DEG C, then kaolin is poured into 10~20min of stirring in high-speed mixer, rotating speed is set to 500~1000r/min, finally will
Titanate coupling agent is poured into after high-speed mixer mixing 10min and released, and obtains the kaolin of surface modification.
Preferably, the polyurethane microcapsule for including isocyanates is prepared by the following method：At room temperature, add water preparation
The gum arabic solution that 250mL mass fractions are 3% is as reaction medium, by 2.9g methyl diphenylene diisocyanate pre-polymerizations
Body is mixed to get reactant as oil phase with 8g isocyanates, oil phase is added in gum arabic solution, stirring half an hour obtains
To stable emulsion, emulsion is then raised to 70 DEG C, then add with 7 DEG C/min heating rate as in water bath with thermostatic control from room temperature
Entering 3g BDOs is used to manufacture react 6h at interfacial polymerization system, 70 DEG C, and filtration washing is dried to obtain microballoon.
The above preferred embodiment that the present invention is provided has excellent mechanical property and self-healing capability.
Embodiment
Describe to be used to disclose the present invention below so that those skilled in the art can realize the present invention.It is excellent in describing below
Embodiment is selected to be only used as citing, it may occur to persons skilled in the art that other obvious modifications.
The present invention provides a kind of special tubing of no-dig technique, including body outer layer and body internal layer, and body outer layer is thickness 3
~8mm PP materials, body internal layer is 6~10mm of thickness PE composites.The PE composites of body internal layer include：It is highly dense
Degree polyethylene, low density polyethylene (LDPE), superhigh molecular weight polyethylene fibers, the polyurethane microcapsule for including isocyanates, surface change
Property kaolin and antioxidant.
Surface modified kaolin is prepared by the following method：High-speed mixer is preheating to 60~80 DEG C of organism temperature, then
Kaolin is poured into 10~20min of stirring in high-speed mixer, rotating speed is set to 500~1000r/min, finally that titanate esters are even
Connection agent is poured into after high-speed mixer mixing 10min and released, and obtains the kaolin of surface modification.
The polyurethane microcapsule for including isocyanates is prepared by the following method：At room temperature, add water preparation 250mL mass
The gum arabic solution that fraction is 3% is different by 2.9g methyl diphenylene diisocyanates performed polymer and 8g as reaction medium
Cyanate is mixed to get reactant as oil phase, and oil phase is added in gum arabic solution, what stirring half an hour was stablized
Emulsion, is then raised to 70 DEG C with 7 DEG C/min heating rate as in water bath with thermostatic control by emulsion from room temperature, add 3g Isosorbide-5-Nitraes-
Butanediol is used to manufacture react 6h at interfacial polymerization system, 70 DEG C, and filtration washing is dried to obtain microballoon.
The preparation method of tubing belongs to prior art, and the present invention is no longer described in detail, and following examples are body internal layer master batch
Preparation method, people in the art can prepare body internal layer after master batch is obtained according to prior art.
Embodiment 1
PE composites are prepared by following steps：
(1) mass parts of high density polyethylene (HDPE) 100, the mass parts of low density polyethylene (LDPE) 50, superhigh molecular weight polyethylene fibers 10 are weighed
Mass parts, the mass parts of polyurethane microcapsule 20 for including isocyanates, the mass parts of surface modified kaolin 50, the matter of antioxidant 3
Measure part；
(2) above-mentioned raw materials are sequentially added in mixed on low speed equipment and is sufficiently mixed 5min, by mixed raw material extrusion processing system
Standby is master batch.
Comparative example 1
PE composites are prepared by following steps：
(1) mass parts of high density polyethylene (HDPE) 100, the mass parts of low density polyethylene (LDPE) 50, superhigh molecular weight polyethylene fibers 10 are weighed
Mass parts, the mass parts of surface modified kaolin 50, the mass parts of antioxidant 3；
(2) above-mentioned raw materials are sequentially added in mixed on low speed equipment and is sufficiently mixed 5min, by mixed raw material extrusion processing system
Standby is master batch.
Comparative example 2
(1) mass parts of high density polyethylene (HDPE) 100, the mass parts of low density polyethylene (LDPE) 50, superhigh molecular weight polyethylene fibers 10 are weighed
Mass parts, the mass parts of polyurethane microcapsule 10 for including isocyanates, the mass parts of surface modified kaolin 50, the matter of antioxidant 3
Measure part；
(2) above-mentioned raw materials are sequentially added in mixed on low speed equipment and is sufficiently mixed 5min, by mixed raw material extrusion processing system
Standby is master batch.
Comparative example 3
(1) mass parts of high density polyethylene (HDPE) 100, the mass parts of low density polyethylene (LDPE) 50, superhigh molecular weight polyethylene fibers 10 are weighed
Mass parts, the mass parts of polyurethane microcapsule 20 for including isocyanates, the mass parts of antioxidant 3；
(2) above-mentioned raw materials are sequentially added in mixed on low speed equipment and is sufficiently mixed 5min, by mixed raw material extrusion processing system
Standby is master batch.
Comparative example 4
PE composites are prepared by following steps：
(1) polyurethane for weigh the mass parts of high density polyethylene (HDPE) 100, the mass parts of low density polyethylene (LDPE) 50, including isocyanates is micro-
The mass parts of capsule 20, the mass parts of surface modified kaolin 50, the mass parts of antioxidant 3；
(2) above-mentioned raw materials are sequentially added in mixed on low speed equipment and is sufficiently mixed 5min, by mixed raw material extrusion processing system
Standby is master batch.
Embodiment 1 and comparative example the 1-4 master batch obtained are prepared as corresponding sample and carry out performance test, test event with
It the results are shown in Table 1.
Table 1
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (4)
1. a kind of special tubing of no-dig technique, it is characterised in that including body outer layer and body internal layer, the body outer layer is thickness
3~8mm PP materials are spent, the body internal layer is 6~10mm of thickness PE composites, and the PE composites include
High density polyethylene (HDPE), low density polyethylene (LDPE), superhigh molecular weight polyethylene fibers, the polyurethane microcapsule for including isocyanates, table
Face modified kaolin and antioxidant.
2. the special tubing of no-dig technique according to claim 1, it is characterised in that surface modified kaolin is by the following method
Prepare：High-speed mixer is preheating to 60~80 DEG C of organism temperature, then by kaolin pour into stirring 10 in high-speed mixer~
20min, rotating speed is set to 500~1000r/min, is put after titanate coupling agent finally is poured into high-speed mixer mixing 10min
Go out, obtain the kaolin of surface modification.
3. the special tubing of no-dig technique according to claim 2, it is characterised in that include the polyurethane microcapsule of isocyanates
It is prepared by the following method：At room temperature, add water prepare 250mL mass fractions be 3% gum arabic solution as reaction
Medium, is mixed to get reactant as oil phase, by oil using 2.9g methyl diphenylene diisocyanates performed polymer and 8g isocyanates
It is added in gum arabic solution, the emulsion that stirring half an hour is stablized, then by emulsion as in water bath with thermostatic control, with 7
DEG C/min heating rate is raised to 70 DEG C from room temperature, adding 3g BDOs is used to manufacture at interfacial polymerization system, 70 DEG C
6h is reacted, filtration washing is dried to obtain microballoon.
4. according to any described special tubing of no-dig technique of claim 1-3, it is characterised in that the PE composites include height
The mass parts of density polyethylene 100, the mass parts of low density polyethylene (LDPE) 50, the mass parts of superhigh molecular weight polyethylene fibers 10, include it is different
The mass parts of polyurethane microcapsule 20 of cyanate, the mass parts of surface modified kaolin 50, the mass parts of antioxidant 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710271876.3A CN106947146B (en) | 2017-04-24 | 2017-04-24 | Trenchless special pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710271876.3A CN106947146B (en) | 2017-04-24 | 2017-04-24 | Trenchless special pipe and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106947146A true CN106947146A (en) | 2017-07-14 |
| CN106947146B CN106947146B (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710271876.3A Active CN106947146B (en) | 2017-04-24 | 2017-04-24 | Trenchless special pipe and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106947146B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330710A (en) * | 2019-06-04 | 2019-10-15 | 徐海松 | A kind of pressure resistance PE tubing and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761942Y (en) * | 2004-10-12 | 2006-03-01 | 河北宝硕管材有限公司 | Anti-scoring double-layer compound plastic pipe |
| CN101125941A (en) * | 2007-08-03 | 2008-02-20 | 安徽国通高新管业股份有限公司 | Polyethylene pipe for non-excavation traction method construction |
| US20150291745A1 (en) * | 2012-11-21 | 2015-10-15 | Pen Inc. | Self-Healing Polyethylene |
-
2017
- 2017-04-24 CN CN201710271876.3A patent/CN106947146B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761942Y (en) * | 2004-10-12 | 2006-03-01 | 河北宝硕管材有限公司 | Anti-scoring double-layer compound plastic pipe |
| CN101125941A (en) * | 2007-08-03 | 2008-02-20 | 安徽国通高新管业股份有限公司 | Polyethylene pipe for non-excavation traction method construction |
| US20150291745A1 (en) * | 2012-11-21 | 2015-10-15 | Pen Inc. | Self-Healing Polyethylene |
Non-Patent Citations (3)
| Title |
|---|
| DONG YANG WU等: ""Self-healing polymeric materials: A review of"", 《PROGRESS IN POLYMER SCIENCE》 * |
| MINGXING HUANG等: ""Facile microencapsulation of HDI for self-healing anticorrosion coatings"", 《JOURNAL OR MATERIALS CHEMISTRY》 * |
| 沃丁柱: "《复合材料大全》", 31 January 2002, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330710A (en) * | 2019-06-04 | 2019-10-15 | 徐海松 | A kind of pressure resistance PE tubing and preparation method thereof |
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| Publication number | Publication date |
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| CN106947146B (en) | 2021-10-15 |
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| CB02 | Change of applicant information |
Address after: 318054 Qiaoyang Village, Fengjiang Street, Luqiao District, Taizhou City, Zhejiang Province Applicant after: Zhejiang Obo Pipe Industry Co.,Ltd. Address before: 318054 Qiaoyang Village, Fengjiang Street, Luqiao District, Taizhou City, Zhejiang Province Applicant before: TAIZHOU AOBO PIPE Co.,Ltd. |
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