CN106188468A - Polyurethane elastomer antifreezing water pipe liner and preparation method thereof - Google Patents
Polyurethane elastomer antifreezing water pipe liner and preparation method thereof Download PDFInfo
- Publication number
- CN106188468A CN106188468A CN201610576550.7A CN201610576550A CN106188468A CN 106188468 A CN106188468 A CN 106188468A CN 201610576550 A CN201610576550 A CN 201610576550A CN 106188468 A CN106188468 A CN 106188468A
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- CN
- China
- Prior art keywords
- water pipe
- polyurethane elastomer
- parts
- pipe liner
- preparation
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3802—Low-molecular-weight compounds having heteroatoms other than oxygen having halogens
- C08G18/3814—Polyamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
Abstract
The invention belongs to polyurethane product technical field, be specifically related to a kind of polyurethane elastomer antifreezing water pipe liner and preparation method thereof.Described polyurethane elastomer antifreezing water pipe liner, is made up of the raw material of following parts by weight: polyether polyol 35～80 parts；Polyisocyanates 10～50 parts；Vulcanizing agent 6～20 parts.Polyurethane elastomer antifreezing water pipe liner prepared by the present invention has good resistance to low temperature, good resistance to water, the good coefficient of expansion, good anti-wear performance, safe and reliable, solve the traditional shallow embedding of cold district, exposed or half exposed running water pipe freezing tolerance is poor, water pipe from freezing crack, bend, deform, the problem such as corrosion, it is possible to the area long-term freeze thawing of water pipe that seasons oneself to cold, immersion, the working characteristics that repeatedly rubs；Described preparation method, simple easily enforcement.
Description
Technical field
The invention belongs to polyurethane product technical field, be specifically related to a kind of polyurethane elastomer antifreezing water pipe liner and
Preparation method.
Background technology
Traditional shallow embedding, exposed or half exposed running water pipe mostly are the materials such as PPR, PVC duroplasts, carbon steel and make.Cold
Cold northern area, winter, outdoor temperature was relatively low, outdoor usually owing to the icing volumetric expansion of water is by water pipe from freezing crack, caused water pipe
Scrap, cause the problems such as water resource waste, frequently more water-changing tube.Traditional PPR, PVC duroplasts water pipe is in shallow embedding, exposed or half
When exposed operating mode is applied, owing to plastic strength is poor, water pipe flattening, deformation, the shortcoming of bending usually occur.
It is known that polyether-type elastomer has good resistance to low temperature, good resistance to water, good expansion system
Several, good anti-wear performance, good processing characteristics, the advantage such as safe and reliable, will on antifreezing water pipe if can apply it to
How the water pipe from freezing crack being effectively improved conventional plastic, the problem bending, deforming, realize this application extremely important.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of polyurethane elastomer antifreezing water pipe liner, tool
There are good resistance to low temperature, resistance to water, the coefficient of expansion, anti-wear performance；Present invention simultaneously provides its preparation method.
Polyurethane elastomer antifreezing water pipe liner of the present invention, is made up of the raw material of following parts by weight:
Polyether polyol 35～80 parts；
Polyisocyanates 10～50 parts；
Vulcanizing agent 6～20 parts.
Wherein:
Described polyether polyol uses degree of functionality to be 1.5～2.5, and molecular weight is the polyether polyol of 1500～2500,
Preferably degree of functionality is 2, and molecular weight is the polyether polyol of 2000, and more preferably Zibo moral letter federal chemistry Industrial Co., Ltd produces
DDL-2000.Little by the product hardness of this kind of polyethers, hot strength is high.
Described polyisocyanates is TDI-80, and Yantai Wan Hua Group Plc provides, this kind of polyisocyanates
Done product hardness reduces, and elongation at break is relatively big, and ability of anti-deformation is strong.
Described vulcanizing agent is MOCA.This kind vulcanizing agent hardness is moderate, tear resistance is preferable.
The preparation method of described polyurethane elastomer antifreezing water pipe liner, comprises the steps:
(1) prepared by performed polymer: be warming up to polyether polyol 105～115 DEG C of vacuum dehydrations 1.5～2.5 hours, be cooled to
20～30 DEG C, add polyisocyanates, be warming up to 80～85 DEG C and react 2～3 hours, obtain performed polymer, be cooled to less than 50 DEG C, close
Seal standby；
(2) after the performed polymer that step (1) prepared, vulcanizing agent are separately heated to 80～120 DEG C, mix homogeneously, falls
Enter in antifreezing water pipe, cured, sulfuration after product.
Described antifreezing water pipe is the seamless steel pipe handled well, and the process technique of employing is: defat → washing → table tune →
Phosphatization → washing.
In step (1) ,-NCO mass content of the performed polymer of preparation is 2～7%.
In step (2), described antifreezing water pipe is the seamless steel pipe handled well, and the process technique of employing is: defat → water
Wash → table tune → phosphatization → washing；Described product is polyurethane elastomer antifreezing water pipe lined steel pipe.
In step (2), described being cured as puts into polyurethane elastomer centrifugal shaper rotating cylinder, is heated to 110～130
DEG C centrifugal solidification 0.2～1 hour；Described sulfuration is at 90～110 DEG C, vulcanizes 2～4 hours.
The rotating speed of described polyurethane elastomer centrifugal shaper is 800～3000 revs/min.
Compared with prior art, beneficial effects of the present invention is as follows:
(1) the polyurethane elastomer antifreezing water pipe liner that prepared by the present invention has good resistance to low temperature, good resistance to
Aqueous, the good coefficient of expansion, good anti-wear performance, solve the traditional shallow embedding of cold district, exposed or half exposed from the beginning
Water pipe freezing tolerance is poor, water pipe from freezing crack, bend, deform, the problem such as corrosion, it is possible to season oneself to cold the area long-term freeze thawing of water pipe, leaching
Bubble, the working characteristics repeatedly rubbed.
(2) the material composition safety that the present invention uses, non-metal catalyst, be applied to drinking water field, healthy, safety,
Dissolution without metallics.
(3) preparation method of the present invention, simple easily enforcement.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
The seamless steel pipe used in embodiment, processes before application, processes technique and is: defat → washing → table tune →
Phosphatization → washing.
Embodiment 1
Described polyurethane elastomer antifreezing water pipe liner, is made up of the raw material of following parts by weight:
Polyether polyol DDL-2000 57 parts；
Polyisocyanates TDI-80 30 parts；
Vulcanizing agent MOCA 13 parts.
Its preparation method is as follows:
(1) prepared by performed polymer: polyether polyol DDL-2000 is warming up to 110 DEG C of vacuum dehydrations 2 hours, is cooled to 20
DEG C, add polyisocyanates TDI-80, be warming up to 83 DEG C and react 2.5 hours, obtain performed polymer, be cooled to 45 DEG C, seal standby；
(2) after performed polymer standby for sealing, vulcanizing agent MOCA being separately heated to 100 DEG C, mix homogeneously, pour into and handle well
Seamless steel pipe in, cured, sulfuration after polyurethane elastomer antifreezing water pipe lined steel pipe, the liner of formation is in steel pipe.
In step (1) ,-NCO mass content of the performed polymer of preparation is 5%.
In step (2), described being cured as puts into polyurethane elastomer centrifugal shaper rotating cylinder, be heated to 120 DEG C from
The heart solidifies 0.6 hour；Described sulfuration is at 100 DEG C, vulcanizes 3 hours.
The rotating speed of described polyurethane elastomer centrifugal shaper is 2000 revs/min.
Above-mentioned formulation material being prepared as polyurethane elastomer, tests elastomer performance, test result is shown in Table 1.
Elastic polyurethane preparation is as follows:
The performed polymer prepared by step (1) method and vulcanizing agent MOCA are separately heated to 80 DEG C, after 120 DEG C, mixed
Conjunction stirs, and pours mould, heated die 2 hours into, and after the demoulding, 110 DEG C vulcanize 2 hours, i.e. prepare detection sample.
Table 1 test result
Embodiment 2
Described polyurethane elastomer antifreezing water pipe liner, is made up of the raw material of following parts by weight:
Polyether polyol DDL-2000 35 parts；
Polyisocyanates TDI-80 10 parts；
Vulcanizing agent MOCA 6 parts.
(1) prepared by performed polymer: polyether polyol DDL-2000 is warming up to 105 DEG C of vacuum dehydrations 1.5 hours, is cooled to 25
DEG C, add polyisocyanates TDI-80, be warming up to 80 DEG C and react 2 hours, obtain performed polymer, be cooled to 40 DEG C, seal standby；
(2) after performed polymer standby for sealing, vulcanizing agent MOCA being separately heated to 80 DEG C, mix homogeneously, pour into and handle well
Seamless steel pipe in, cured, sulfuration after polyurethane elastomer antifreezing water pipe lined steel pipe, the liner of formation is in steel pipe.
In step (1) ,-NCO mass content of the performed polymer of preparation is 2%.
In step (2), described being cured as puts into polyurethane elastomer centrifugal shaper rotating cylinder, be heated to 110 DEG C from
The heart solidifies 0.2 hour；Described sulfuration is at 90 DEG C, vulcanizes 2 hours.
The rotating speed of described polyurethane elastomer centrifugal shaper is 800 revs/min.
Above-mentioned formulation material being prepared as polyurethane elastomer, tests elastomer performance, test result is shown in Table 2.
Elastic polyurethane preparation is as follows:
The performed polymer prepared by step (1) method and vulcanizing agent MOCA are separately heated to 80 DEG C, after 120 DEG C, mixed
Conjunction stirs, and pours mould, heated die 2 hours into, and after the demoulding, 110 DEG C vulcanize 2 hours, i.e. prepare detection sample.
Table 2 test result
Embodiment 3
Described polyurethane elastomer antifreezing water pipe liner, is made up of the raw material of following parts by weight:
Polyether polyol DDL-2000 80 parts；
Polyisocyanates TDI-80 50 parts；
Vulcanizing agent MOCA 20 parts.
(1) prepared by performed polymer: polyether polyol DDL-2000 is warming up to 115 DEG C of vacuum dehydrations 2.5 hours, is cooled to 30
DEG C, add polyisocyanates TDI-80, be warming up to 85 DEG C and react 3 hours, obtain performed polymer, be cooled to 50 DEG C, seal standby；
(2) after performed polymer standby for sealing, vulcanizing agent MOCA being separately heated to 120 DEG C, mix homogeneously, pour into and handle well
Seamless steel pipe in, cured, sulfuration after polyurethane elastomer antifreezing water pipe lined steel pipe, the liner of formation is in steel pipe.
In step (1) ,-NCO mass content of the performed polymer of preparation is 7%.
In step (2), described being cured as puts into polyurethane elastomer centrifugal shaper rotating cylinder, be heated to 130 DEG C from
The heart solidifies 1 hour；Described sulfuration is at 110 DEG C, vulcanizes 4 hours.
The rotating speed of described polyurethane elastomer centrifugal shaper is 3000 revs/min.
Above-mentioned formulation material being prepared as polyurethane elastomer, tests elastomer performance, test result is shown in Table 3.
Elastic polyurethane preparation is as follows:
The performed polymer prepared by step (1) method and vulcanizing agent MOCA are separately heated to 80 DEG C, after 120 DEG C, mixed
Conjunction stirs, and pours mould, heated die 2 hours into, and after the demoulding, 110 DEG C vulcanize 2 hours, i.e. prepare detection sample.
Table 3 test result
Claims (6)
1. a polyurethane elastomer antifreezing water pipe liner, it is characterised in that: it is made up of the raw material of following parts by weight:
Polyether polyol 35～80 parts；
Polyisocyanates 10～50 parts；
Vulcanizing agent 6～20 parts.
Polyurethane elastomer antifreezing water pipe liner the most according to claim 1, it is characterised in that: described polyether polyol
Using degree of functionality is 1.5～2.5, and molecular weight is the polyether polyol of 1500～2500.
Polyurethane elastomer antifreezing water pipe liner the most according to claim 1, it is characterised in that: described polyisocyanates
For TDI-80.
Polyurethane elastomer antifreezing water pipe liner the most according to claim 1, it is characterised in that: described vulcanizing agent is
MOCA。
5. the preparation method of the arbitrary described polyurethane elastomer antifreezing water pipe liner of claim 1-4, it is characterised in that:
Comprise the steps:
(1) prepared by performed polymer: polyether polyol is warming up to 105～115 DEG C of vacuum dehydrations 1.5～2.5 hours, be cooled to 20～
30 DEG C, add polyisocyanates, be warming up to 80～85 DEG C and react 2～3 hours, obtain performed polymer, be cooled to less than 50 DEG C, seal standby
With；
(2) after the performed polymer that step (1) prepared, vulcanizing agent are separately heated to 80～120 DEG C, mix homogeneously, pour into anti-
Freeze in water pipe, cured, sulfuration after product.
The preparation method of polyurethane elastomer antifreezing water pipe liner the most according to claim 5, it is characterised in that: step
(1), in ,-NCO the mass content of described performed polymer is 2～7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576550.7A CN106188468A (en) | 2016-07-21 | 2016-07-21 | Polyurethane elastomer antifreezing water pipe liner and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576550.7A CN106188468A (en) | 2016-07-21 | 2016-07-21 | Polyurethane elastomer antifreezing water pipe liner and preparation method thereof |
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| CN106188468A true CN106188468A (en) | 2016-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024764A (en) * | 2021-03-25 | 2021-06-25 | 衡橡科技股份有限公司 | Polyurethane elastomer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814888A (en) * | 2012-08-29 | 2012-12-12 | 广州华工百川科技股份有限公司 | Metal composite delivery pipe with polyurethane elastomer lining and manufacturing method and application of metal composite delivery pipe |
| CN103072230A (en) * | 2012-12-07 | 2013-05-01 | 江苏泰东科技有限公司 | Making method of low free nanometer wear-resistant polyurethane composite steel tube |
| CN103254387A (en) * | 2013-05-24 | 2013-08-21 | 淄博德信联邦化学工业有限公司 | High-abrasion-resistance polyurethane elastomer and preparation method thereof |
-
2016
- 2016-07-21 CN CN201610576550.7A patent/CN106188468A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814888A (en) * | 2012-08-29 | 2012-12-12 | 广州华工百川科技股份有限公司 | Metal composite delivery pipe with polyurethane elastomer lining and manufacturing method and application of metal composite delivery pipe |
| CN103072230A (en) * | 2012-12-07 | 2013-05-01 | 江苏泰东科技有限公司 | Making method of low free nanometer wear-resistant polyurethane composite steel tube |
| CN103254387A (en) * | 2013-05-24 | 2013-08-21 | 淄博德信联邦化学工业有限公司 | High-abrasion-resistance polyurethane elastomer and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024764A (en) * | 2021-03-25 | 2021-06-25 | 衡橡科技股份有限公司 | Polyurethane elastomer and preparation method thereof |
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Application publication date: 20161207 |