CN108504322A - A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof - Google Patents
A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof Download PDFInfo
- Publication number
- CN108504322A CN108504322A CN201710126380.7A CN201710126380A CN108504322A CN 108504322 A CN108504322 A CN 108504322A CN 201710126380 A CN201710126380 A CN 201710126380A CN 108504322 A CN108504322 A CN 108504322A
- Authority
- CN
- China
- Prior art keywords
- preparation
- speed railway
- cold area
- severe cold
- plasticizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- 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
-
- 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
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl 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
- C08G18/70—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
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention belongs to civil engineering material technical fields.More particularly to a kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof, it is characterised in that it is made of two components of AB, and AB mass ratioes are 5: 1.Component A each component proportion is：Methyl diphenylene diisocyanate 5%~7%；Polyether polyol 30%~40%；Plasticizer 25%~35%；Coupling agent 0.6%~1%；Filler 20%~30%；Preparation method includes raw material dehydration, prepared by prepolymer, material mixes three processes.B component each component proportion is：Polyether polyol 15%~25%；Plasticizer 30%~40%；Antifoaming agent 0.01%~0.1%；Filler 40%~50%；Catalyst 0.02%~0.1%；Anti-aging agent 4%~6%.Preparation method includes raw material dehydration, material two processes of mixing.The present invention has the filling sealing for fully meeting severe cold area ballastless track of high-speed railway structure seam.
Description
Technical field
The invention belongs to civil engineering material technical fields, and in particular to a kind of severe cold area polyurethane used for high-speed railway is embedding
Stitch glue and preparation method thereof.
Background technology
From Chinese first railway (capital Zhang Tielu) in 1905 go into operation to 100 years of year ends 2005 in the length of railroad lines in service
Totally 62200 kilometers, without high-speed railway；But the world has been leapt to up to 12.1 ten thousand kilometers to 2015 year end Chinese Railway revenue kilometres
Two, wherein 1.9 ten thousand kilometers of high-speed railway, rank first in the world.With 10 years time, the thing of a century of making over.Currently, Chinese
" four vertical four is horizontal " mainline railway road network also has been established, and the inter-city railway network between the main cities of Middle Eastern has also been formed.I
State's railway construction will further develop to frigid plateau region as central and west regions, the Northwest, the Northeast.
Caulking material is the filling sealing material applied to ballastless track of high-speed railway structure seam, is high speed railway fragments-free
The important link of track comprehensive waterproof.Current polyurethane caulking material is under positive temperature or zero degree or so can adapt to seam displacement
And keep the deflection effectively sealed.And in severe cold area rail bed plate variator displacement up to 50%, conventional polyurethanes are embedding
It is poor to stitch material displacement ability grade, easily occurs gap after use, the effect effectively sealed is not achieved, causes to rise soil, roadbed
Frost heave etc., not only influences the durability of ballastless track structure, or even is impacted to traffic safety.As previously mentioned, real railway
Largely there is severe cold area filleting actual needs in construction, how to overcome under existing polyurethane caulking material at low temperature state from
It is seamed into as critical issue.Therefore, in Practical Project demand and current material system there are the problem of, propose the present invention.
Invention content
The present invention is directed to the gap problem under current severe cold area polyurethane caulking material at low temperature state, and having invented one kind can
In the polyurethane caulking glue that severe cold area uses.
The present invention uses function and service technology, it is characterised in that it is made of two component of A, B, and two component mass ratio of A, B is 5
∶1.Component A is mixed in a certain ratio by methyl diphenylene diisocyanate, polyether polyol, plasticizer, coupling agent, filler etc.
It forms, preparation method includes raw material dehydration, prepared by prepolymer, material mixes three processes.Each component proportion is：Two
Methylenebis phenyl isocyanate：5%~7%；Polyether polyol：30%~40%；Plasticizer：25%~35%；Coupling agent：
0.6%~1%；Filler：20%~30%；B component is by polyether polyol, plasticizer, antifoaming agent, filler, catalyst, anti-aging agent
Etc. being mixed in a certain ratio, preparation method includes that raw material dehydration, material mix two processes.Each component proportion
For：Polyether polyol：15%~25%；Plasticizer：25%~40%；Antifoaming agent：0.01%~0.1%；Filler：40%~
50%；Catalyst：0.02%~0.1%；Anti-aging agent：4%~6%.
The methyl diphenylene diisocyanate be 4,4 ' methyl diphenylene diisocyanates (pure MDI), contain one
The mixture (polymeric MDI) and pure MDI of the pure MDI of certainty ratio and polyphenyl polymethylene polyisocyanates and changing for polymeric MDI
One or more of property object composition.
The polyether polyol is several dihydric alcohols, trihydroxylic alcohol, modified polyalcohol or two or more compositions.
The plasticizer is phthalate plasticizer.
The coupling agent is silane coupling agent.
The filler is that fineness is the mesh talcum powder of 200 mesh~350, the mesh light calcium carbonate powder or a certain proportion of mixed of 200 mesh~350
Close object.
The antifoaming agent is that organic silicon defoamer, polysiloxane defoaming agent, polyethers antifoaming agent and polyether-modified silicon disappear
Any one of infusion.
The catalyst is organo-metallic compound.
The anti-aging agent is the mixture of heat stabilizer, light stabilizer, hydrolysis stabilizer etc..
The present invention is the gap to solve the problems, such as under the polyurethane caulking material at low temperature state of severe cold area.It the advantage is that：
A kind of severe cold area polyurethane caulking glue stretch modulus used for high-speed railway of the present invention meets 23 DEG C and is not more than 0.4MPa and -20 simultaneously
DEG C be not more than 0.6MPa, and material displacement ability be more than 50 grades.Fully meet severe cold area ballastless track of high-speed railway structure
The filling of seam seals.
Specific implementation mode
Embodiment is described in detail：The present embodiment is being implemented down based on the technical solution of the present invention, gives in detail
Embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1
Component A：Methyl diphenylene diisocyanate：5.2%；Polyether polyol：31.8%；Plasticizer：33.2%；Coupling
Agent：0.7%；Filler：29.1%.
Preparation method is：
Polyether polyol, plasticizer are heated to 120 ± 5 DEG C by 1 respectively, are vacuumized 3 hours, vacuum degree control-
0.095MPa.Filler is heated to 120 ± 5 DEG C, dries 3 hours.
2 dewatered polyether polyol are cooled to 60 DEG C hereinafter, with methyl diphenylene diisocyanate in 80 ± 5 DEG C of temperature
Under the conditions of react 3 hours generate prepolymer.
3 prepolymers are mixed with dewatered plasticizer, filler and coupling agent
B component：Polyether polyol：18.2%；Plasticizer：32.6%；Antifoaming agent：0.45%；Filler：44.6%；Catalysis
Agent：0.03%；Anti-aging agent：4.12%.
Preparation method is：
Polyether polyol, plasticizer are heated to 120 ± 5 DEG C by 1 respectively, are vacuumized 3 hours, vacuum degree control-
0.095MPa.Filler is heated to 120 ± 5 DEG C, dries 3 hours.
2 dewatered polyether polyol, plasticizer, filler are mixed with antifoaming agent, catalyst, anti-aging agent
Component A and B component material in mass ratio 5: 1 are uniformly mixed up to material of the present invention.
It is shown in Table 1 using material property of the present invention made from above-mentioned formula：
1 polyurethane caulking colloidality energy of table
Embodiment 2
Component A：Methyl diphenylene diisocyanate：6.5%；Polyether polyol：38.8%；Plasticizer：28.2%；Coupling
Agent：0.7%；Filler：25.8%.
Preparation method is：
Polyether polyol, plasticizer are heated to 120 ± 5 DEG C by 1 respectively, are vacuumized 3 hours, vacuum degree control-
0.095MPa.Filler is heated to 120 ± 5 DEG C, dries 3 hours.
2 dewatered polyether polyol are cooled to 60 DEG C hereinafter, with methyl diphenylene diisocyanate in 80 ± 5 DEG C of temperature
Under the conditions of react 3 hours generate prepolymer.
3 prepolymers are mixed with dewatered plasticizer, filler and coupling agent
B component：Polyether polyol：20.2%；Plasticizer：32.65%；Antifoaming agent：0.4%；Filler：42.7%；Catalysis
Agent：0.05%；Anti-aging agent：4%.
Preparation method is：
Polyether polyol, plasticizer are heated to 120 ± 5 DEG C by 1 respectively, are vacuumized 3 hours, vacuum degree control-
0.095MPa.Filler is heated to 120 ± 5 DEG C, dries 3 hours.
2 dewatered polyether polyol, plasticizer, filler are mixed with antifoaming agent, catalyst, anti-aging agent
Component A and B component material in mass ratio 5: 1 are uniformly mixed up to material of the present invention.
It is shown in Table 2 using material property of the present invention made from above-mentioned formula：
2 polyurethane caulking colloidality energy of table
The component A of the present invention：Methyl diphenylene diisocyanate, polyether polyol, plasticizer, coupling agent, filler.B groups
Part：Polyether polyol, plasticizer, antifoaming agent, filler, catalyst, anti-aging agent upper lower limit value and interval value can realize this hair
It is bright, embodiment numerous to list herein.
Claims (9)
1. a kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof, it is characterised in that it is by two component of A, B
Composition, two component mass ratio of A, B are 5: 1.Component A is by methyl diphenylene diisocyanate, polyether polyol, plasticizer, coupling
Agent, filler etc. are mixed in a certain ratio, and preparation method includes raw material dehydration, prepared by prepolymer, material mixes three
Process；B component is mixed in a certain ratio by polyether polyol, plasticizer, antifoaming agent, filler, catalyst, anti-aging agent etc.,
Preparation method includes raw material dehydration, material two processes of mixing.
Component A：Methyl diphenylene diisocyanate：5%~7%；Polyether polyol：30%~40%；
Plasticizer：25%~35%；Coupling agent：0.6%~1%；
Filler：20%~30%；
B component：Polyether polyol：15%~25%；Plasticizer：25%~40%；
Antifoaming agent：0.01%~0.1%；Filler：40%~50%；
Catalyst：0.02%~0.1%；Anti-aging agent：4%~6%.
2. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The methyl diphenylene diisocyanate is 4,4 ' methyl diphenylene diisocyanates (pure MDI), contains certain proportion
In the mixture (polymeric MDI) and the modifier of pure MDI and polymeric MDI of pure MDI and polyphenyl polymethylene polyisocyanates
One or more kinds of compositions.
3. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The polyether polyol is several dihydric alcohols, trihydroxylic alcohol, modified polyalcohol or two or more compositions.
4. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The plasticizer is phthalate plasticizer.
5. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The coupling agent is silane coupling agent.
6. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The filler is that fineness is the mesh talcum powder of 200 mesh~350, the mesh light calcium carbonate powder of 200 mesh~350 or a certain proportion of mixing
Object.
7. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The antifoaming agent is organic silicon defoamer, polysiloxane defoaming agent, polyethers antifoaming agent and polyether-modified silicon defoaming agent
Any one.
8. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The catalyst is organo-metallic compound.
9. according to a kind of severe cold area polyurethane caulking glue used for high-speed railway described in claim 1 and preparation method thereof, feature
It is：The anti-aging agent is the mixture of heat stabilizer, light stabilizer, hydrolysis stabilizer etc..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126380.7A CN108504322A (en) | 2017-02-26 | 2017-02-26 | A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126380.7A CN108504322A (en) | 2017-02-26 | 2017-02-26 | A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108504322A true CN108504322A (en) | 2018-09-07 |
Family
ID=63373771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710126380.7A Pending CN108504322A (en) | 2017-02-26 | 2017-02-26 | A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108504322A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527482A (en) * | 2019-09-17 | 2019-12-03 | 陕西杨凌磐基新材料科技有限公司 | Railway ballastless track special dual-component filleting waterproof gasket cement and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266103A (en) * | 1997-03-26 | 1998-10-06 | Toyo Tire & Rubber Co Ltd | Mixture for railway ballast track and track structure |
| CN103992633A (en) * | 2014-05-08 | 2014-08-20 | 中国铁道科学研究院铁道建筑研究所 | Polyurethane caulking material for expansion joints of ballastless track of high speed railway |
| CN104356340A (en) * | 2014-10-23 | 2015-02-18 | 北京铁科首钢轨道技术股份有限公司 | Polyurethane prepolymer, double-ingredient polyurethane joint material with polyurethane prepolymer, preparing method and application |
| CN105505283A (en) * | 2016-01-09 | 2016-04-20 | 安徽万诚达新型材料有限公司 | Low-tensile-modulus polyurethane caulked joint adhesive and preparation method thereof |
-
2017
- 2017-02-26 CN CN201710126380.7A patent/CN108504322A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266103A (en) * | 1997-03-26 | 1998-10-06 | Toyo Tire & Rubber Co Ltd | Mixture for railway ballast track and track structure |
| CN103992633A (en) * | 2014-05-08 | 2014-08-20 | 中国铁道科学研究院铁道建筑研究所 | Polyurethane caulking material for expansion joints of ballastless track of high speed railway |
| CN104356340A (en) * | 2014-10-23 | 2015-02-18 | 北京铁科首钢轨道技术股份有限公司 | Polyurethane prepolymer, double-ingredient polyurethane joint material with polyurethane prepolymer, preparing method and application |
| CN105505283A (en) * | 2016-01-09 | 2016-04-20 | 安徽万诚达新型材料有限公司 | Low-tensile-modulus polyurethane caulked joint adhesive and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527482A (en) * | 2019-09-17 | 2019-12-03 | 陕西杨凌磐基新材料科技有限公司 | Railway ballastless track special dual-component filleting waterproof gasket cement and preparation method thereof |
| CN110527482B (en) * | 2019-09-17 | 2021-06-29 | 陕西杨凌磐基新材料科技有限公司 | Special two-component caulking waterproof sealant for railway ballastless track and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102408860B (en) | Flexible epoxy adhesive and application | |
| CN107686550B (en) | Plasticizer-free polyurethane elastomer material composition with low hardness and high elongation at break and preparation method thereof | |
| CN110372844B (en) | Polyurethane grouting material, preparation method and application | |
| CN101735595A (en) | Polyurethane resin composition, preparation method and application thereof | |
| CN101875786B (en) | Single-component room temperature vulcanized organosilicon sealant and preparation method thereof | |
| CN101805588B (en) | Polyurethane road caulking sealant with good durability and production process | |
| CN104693783B (en) | A kind of bituminous paving two-component normal temperature cure gap-grouting material | |
| CN101544740B (en) | Molded normal temperature curing urethane resin composition and preparation method thereof | |
| CN101921568A (en) | Polyurethane adhesive for bonding extruded sheet for high-speed railway and preparation method thereof | |
| CN101125909B (en) | Foamed solid polyurethane elastomers based on high-melting polyisocyanates, method for the production thereof and use thereof | |
| CN102250310B (en) | Polyurethane resin composition as well as preparation method and application thereof | |
| CN104479099B (en) | Low-viscosity high-early-strength polyurethane repair material for high speed railway slab ballastless track filling layer open joint repair | |
| CN102532466A (en) | Micropore polyurethane elastomer material and preparation method and use thereof | |
| CN109942779B (en) | High-speed rail ballastless track open joint repairing slurry and preparation method thereof | |
| CN109180071B (en) | High-performance cold-mix mixture for road surface layer and preparation method thereof | |
| CN101003688A (en) | High performance pavement material of epoxy asphalt, preparation method and application | |
| CN107652938A (en) | A kind of flame-retardant polyurethane filleting glue and preparation method thereof | |
| CN110668754B (en) | New and old pavement base course splicing interface treatment material and preparation method thereof | |
| CN108504322A (en) | A kind of severe cold area polyurethane caulking glue used for high-speed railway and preparation method thereof | |
| CN109423253A (en) | A kind of one-component high elongation at tear de-oxime type silicone filleting glue and preparation method thereof | |
| CN105505282A (en) | Quick dry type polyurethane sealant and preparation method thereof | |
| CN102220104A (en) | Railway ballast adhesive and its preparation method and application | |
| CN105461896A (en) | High-hardness polyurethane elastomer pressure-bearing support material for bridge and preparation method and using method thereof | |
| CN109503804A (en) | A kind of room temperature curing high-performance polyurethane elastomer composition | |
| CN216074571U (en) | Novel steel slag asphalt pavement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180907 |
|
| WD01 | Invention patent application deemed withdrawn after publication |