CN104448199A - Polyurethane elastomer sleeper and preparation method thereof - Google Patents
Polyurethane elastomer sleeper and preparation method thereof Download PDFInfo
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- CN104448199A CN104448199A CN201410797195.7A CN201410797195A CN104448199A CN 104448199 A CN104448199 A CN 104448199A CN 201410797195 A CN201410797195 A CN 201410797195A CN 104448199 A CN104448199 A CN 104448199A
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- Prior art keywords
- polyurethane elastomer
- sleeper
- polyether glycol
- preparation
- parts
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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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation 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
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
-
- 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
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- 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
- C08G18/6688—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 C08G18/3271
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to the field of chemicals, and specifically relates to a polyurethane elastomer sleeper and a preparation method thereof. The polyurethane elastomer sleeper is prepared from the following raw materials in parts by weight: 20-30 parts of diisocyanate, 50-60 parts of polyether polyol of which the functionality is 2-4 and the molecular weight is 1000-2000, 25-30 parts of polyether polyol of which the functionality is 2-4 and the molecular weight is 2000-3000, 15-25 parts of heated polyether polyol of which the functionality is 2-4 and the molecular weight is 3000-5000 and 3-5 parts of chain extender. The polyurethane elastomer sleeper has extremely high physical and chemical stability, is not swollen after being exposed in the sun and soaked into water, has light mass, facilitates construction, has extremely high compressive, tensile and bending strength and shock absorption effect, and can be used for high load bearing and used as rail sleepers of high speed trains and heavy goods trains. The preparation method provided by the invention is simple and reasonable.
Description
Technical field
The invention belongs to chemical field, be specifically related to a kind of polyurethane elastomer sleeper and preparation method thereof.
Background technology
Wooden crossties stands Exposure to Sunlight for a long time, bubble holds corrosion-vulnerable, and with the passing of time the road nail on sleeper can relax because using, and work-ing life is short.Along with the minimizing of the forest reserves, wooden crossties does not meet the theory of environmental protection.And cement sleeper weight is large, transport at substantial manpower and materials.And conventional polyurethanes sleeper in resistance to compression, wear-resisting, bending resistance, damping intensity etc. on be not enough to bear bullet train and heavy goods train for a long time.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of polyurethane elastomer sleeper, have higher physical and chemical performance, have resistance to compression, tension, bending strength and damping effect, the present invention also provides its preparation method, technique advantages of simple.
Polyurethane elastomer sleeper of the present invention, be made up of the raw material of following parts by weight:
Wherein: the functionality of polyether glycol A is 2 ~ 4, molecular weight is 1000 ~ 2000;
The functionality of polyether glycol B is 2 ~ 4, molecular weight is 2000 ~ 3000,
The functionality of polyether glycol C is 2 ~ 4, molecular weight 3000 ~ 5000.
Vulcabond is preferably TDI-80, and Qingdao Hua Yuan polymkeric substance company limited produces.
Polyether glycol A is preferably DDL1000D, believes that federal chemical Industrial Co., Ltd produces by Zibo moral, adds the product strength that this type of polyvalent alcohol prepares high, has high wear resisting property and ultimate compression strength.
Polyether glycol B is preferably DDL2000D, believes that federal chemical Industrial Co., Ltd produces by Zibo moral, and adding the goods that this type of polyvalent alcohol prepares has high tension, bending strength.
Polyether glycol C is preferably DDL3000D, believes that federal chemical Industrial Co., Ltd produces by Zibo moral, adds the goods that this type of polyvalent alcohol prepares low temperature resistant, solvent resistant.
Chainextender is preferably trolamine.
The preparation method of high stability polyurethane elastomer sleeper of the present invention, comprises the following steps:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, vacuum hydro-extraction, cooling adds vulcabond, and reaction, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass fibre preform or glass mat are inserted in mould;
(3) performed polymer that step (1) obtains heats up and adds chainextender, stirs and is poured in mould, within the scope of 5-50 DEG C, adopt vacuumize degassing curing molding, namely make product in sealed vessel.
Wherein: step (1) vacuum hydro-extraction is for being warming up to 90-105 DEG C of vacuum hydro-extraction 2-2.5 hour.
Step (1) reaction is under 80-85 DEG C of condition, stirring reaction 3-3.5 hour.
The preparation method of high stability polyurethane elastomer sleeper of the present invention, concrete preferred step is:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, be warming up to 90-105 DEG C of vacuum hydro-extraction 2-2.5 hour, be cooled to 30-50 DEG C and add TDI-80, under 80-85 DEG C of condition, stirring reaction stirring reaction 3-3.5 hour, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass fibre preform or glass mat are inserted in mould, then Bi Mo;
(3) performed polymer is warming up to 80-100 DEG C and adds trolamine, and the Quick pouring that stirs, in mould, within the scope of 5-50 DEG C, adopts vacuumize degassing curing molding, namely makes in sealed vessel.
Step (2) glass fibre preform technique adopts common process.
In sum, the present invention has the following advantages:
(1) high stability polyurethane elastomer sleeper of the present invention, urethane obtains the enhancing of glass fibre, has high physical and chemical stability, and can not expand after experience Exposure to Sunlight bubble, quality is light, constructability.
(2) high stability polyurethane elastomer sleeper of the present invention, there is high resistance to compression, tension, bending strength and damping effect, vertical compression intensity >=60MPa, flexural strength >=70MPa, bending elastic modulus >=6.5GPa, shearing resistance >=7Mpa.Can carry by high loading, can be used for bullet train, the use of heavy goods train track sleeper.
(3) preparation method provided by the invention, technique advantages of simple, does not add solvent in preparation process, and method is simple to operation, lower than market like product cost.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
A kind of high stability polyurethane elastomer sleeper, be made up of the raw material of following parts by weight:
Preparation method is as follows:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, be warming up to 100 DEG C of vacuum hydro-extractions 2 hours, be cooled to 50 DEG C and add TDI-80, under 80 DEG C of conditions, stirring reaction, after 3 hours, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass fibre preform, then Bi Mo;
(3) performed polymer is warming up to 85 DEG C and adds trolamine, and the Quick pouring that stirs, in mould, within the scope of 5-50 DEG C, adopts vacuumize degassing curing molding, namely makes in sealed vessel.
Carry out performance test to the product that embodiment 1 prepares, detected result is as follows:
Density:: 786kg/m
3
Vertical compression intensity: 72MPa
Flexural strength: 80MPa
Bending elastic modulus: 6.8GPa
Shearing resistance: 7.5Mpa.
Embodiment 2
A kind of high stability polyurethane elastomer sleeper, be made up of the raw material of following parts by weight:
Preparation method is as follows:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, be warming up to 105 DEG C of vacuum hydro-extractions 2 hours, be cooled to 50 DEG C and add TDI-80, under 85 DEG C of conditions, stirring reaction, after 3 hours, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass mat is inserted in mould, then Bi Mo;
(3) performed polymer is warming up to 85 DEG C and adds trolamine, and the Quick pouring that stirs, in mould, within the scope of 5-50 DEG C, adopts vacuumize degassing curing molding, namely makes in sealed vessel.
Carry out performance test to the product that embodiment 2 prepares, detected result is as follows:
Density:: 800kg/m
3
Vertical compression intensity: 75MPa
Flexural strength: 79MPa
Bending elastic modulus: 6.9GPa
Shearing resistance: 7.8Mpa.
Embodiment 3
A kind of high stability polyurethane elastomer sleeper, be made up of the raw material of following parts by weight:
Preparation method is as follows:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, be warming up to 95 DEG C of vacuum hydro-extractions 2.5 hours, be cooled to 50 DEG C and add TDI-80, under 83 DEG C of conditions, stirring reaction, after 3.5 hours, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass mat is inserted in mould, then Bi Mo;
(3) performed polymer is warming up to 85 DEG C and adds trolamine, and the Quick pouring that stirs, in mould, within the scope of 5-50 DEG C, adopts vacuumize degassing curing molding, namely makes in sealed vessel.
Carry out performance test to the product that embodiment 2 prepares, detected result is as follows:
Density:: 833kg/m
3
Vertical compression intensity: 67MPa
Flexural strength: 83MPa
Bending elastic modulus: 6.5GPa
Shearing resistance: 7.6Mpa.
Claims (9)
1. a polyurethane elastomer sleeper, is characterized in that: the raw material comprising following parts by weight is made:
Wherein: the functionality of polyether glycol A is 2 ~ 4, molecular weight is 1000 ~ 2000;
The functionality of polyether glycol B is 2 ~ 4, molecular weight is 2000 ~ 3000,
The functionality of polyether glycol C is 2 ~ 4, molecular weight 3000 ~ 5000.
2. polyurethane elastomer sleeper according to claim 1, is characterized in that: vulcabond is TDI-80.
3. polyurethane elastomer sleeper according to claim 1, is characterized in that: polyether glycol A is DDL1000D.
4. polyurethane elastomer sleeper according to claim 1, is characterized in that: polyether glycol B is DDL2000D.
5. polyurethane elastomer sleeper according to claim 1, is characterized in that: polyether glycol C is DDL3000D.
6. polyurethane elastomer sleeper according to claim 1, is characterized in that: chainextender is trolamine.
7. a preparation method for the arbitrary described polyurethane elastomer sleeper of claim 1-6, is characterized in that: comprise the following steps:
(1) polyether glycol A, polyether glycol B and polyether glycol C are mixed, vacuum hydro-extraction, cooling adds vulcabond, and reaction, obtains the performed polymer that NCO massfraction reaches 2.0-3.0%;
(2) glass fibre preform or glass mat are inserted in mould;
(3) performed polymer that step (1) obtains heats up and adds chainextender, stirs and is poured in mould, within the scope of 5-50 DEG C, adopt vacuumize degassing curing molding, namely make product in sealed vessel.
8. the preparation method of polyurethane elastomer sleeper according to claim 7, is characterized in that: step (1) vacuum hydro-extraction is for being warming up to 90-105 DEG C of vacuum hydro-extraction 2-2.5 hour.
9. the preparation method of polyurethane elastomer sleeper according to claim 7, is characterized in that: step (1) reaction is under 80-85 DEG C of condition, stirring reaction 3-3.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797195.7A CN104448199B (en) | 2014-12-19 | 2014-12-19 | Polyurethane elastomer sleeper and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410797195.7A CN104448199B (en) | 2014-12-19 | 2014-12-19 | Polyurethane elastomer sleeper and preparation method thereof |
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| CN104448199A true CN104448199A (en) | 2015-03-25 |
| CN104448199B CN104448199B (en) | 2017-08-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105669933A (en) * | 2016-01-15 | 2016-06-15 | 东南大学 | Preparation method of low-frequency vibration-damping polyurethane elastomer, as well as composite polyurethane auxiliary agent and preparation method thereof |
| CN106750104A (en) * | 2017-02-24 | 2017-05-31 | 耿佃勇 | Polyurethane baseball and preparation method thereof |
| CN108276545A (en) * | 2018-03-19 | 2018-07-13 | 瑞尔华（上海）交通科技有限公司 | A kind of high performance polyurethane composite sleeper and preparation method thereof |
| CN113910732A (en) * | 2021-10-21 | 2022-01-11 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Composite board for railway flatcar and preparation method and application thereof |
Citations (3)
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| CN102030879A (en) * | 2010-09-28 | 2011-04-27 | 上海东大聚氨酯有限公司 | Reinforced hard polyurethane wood-like material, raw material composite thereof and combined polyether |
| CN103304771A (en) * | 2013-06-15 | 2013-09-18 | 尤洛卡矿业安全工程股份有限公司 | Polyurethane reinforced material and preparation method thereof |
| CN103709367A (en) * | 2012-09-29 | 2014-04-09 | 拜耳材料科技(中国)有限公司 | Polyurethane composition and polyurethane ballast roadbed maintenance method |
-
2014
- 2014-12-19 CN CN201410797195.7A patent/CN104448199B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030879A (en) * | 2010-09-28 | 2011-04-27 | 上海东大聚氨酯有限公司 | Reinforced hard polyurethane wood-like material, raw material composite thereof and combined polyether |
| CN103709367A (en) * | 2012-09-29 | 2014-04-09 | 拜耳材料科技(中国)有限公司 | Polyurethane composition and polyurethane ballast roadbed maintenance method |
| CN103304771A (en) * | 2013-06-15 | 2013-09-18 | 尤洛卡矿业安全工程股份有限公司 | Polyurethane reinforced material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105669933A (en) * | 2016-01-15 | 2016-06-15 | 东南大学 | Preparation method of low-frequency vibration-damping polyurethane elastomer, as well as composite polyurethane auxiliary agent and preparation method thereof |
| CN105669933B (en) * | 2016-01-15 | 2018-04-24 | 东南大学 | Low frequency vibration damping method for preparing polyurethane elastic body, composite polyurethane auxiliary agent and preparation method thereof |
| CN106750104A (en) * | 2017-02-24 | 2017-05-31 | 耿佃勇 | Polyurethane baseball and preparation method thereof |
| CN108276545A (en) * | 2018-03-19 | 2018-07-13 | 瑞尔华（上海）交通科技有限公司 | A kind of high performance polyurethane composite sleeper and preparation method thereof |
| CN113910732A (en) * | 2021-10-21 | 2022-01-11 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Composite board for railway flatcar and preparation method and application thereof |
| CN113910732B (en) * | 2021-10-21 | 2023-10-31 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Composite board for railway flatcar and preparation method and application thereof |
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| Publication number | Publication date |
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| CN104448199B (en) | 2017-08-25 |
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Effective date of registration: 20170728 Address after: Road and the intersection of South high tech Zone and bonded logistics park in Shandong city of Zibo province treasure 255086 Applicant after: Zibo Zhengda Polyurethane Co., Ltd. Address before: 256410, Zibo City, Shandong province Huantai County town of justice and the village of Justice Applicant before: ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL CO., LTD. |
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