CN109021203A - Renovate the polyurethane material and preparation method thereof of high-speed rail Mud pumping disease - Google Patents
Renovate the polyurethane material and preparation method thereof of high-speed rail Mud pumping disease Download PDFInfo
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- CN109021203A CN109021203A CN201810971017.XA CN201810971017A CN109021203A CN 109021203 A CN109021203 A CN 109021203A CN 201810971017 A CN201810971017 A CN 201810971017A CN 109021203 A CN109021203 A CN 109021203A
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- 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
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- 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
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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- C—CHEMISTRY; METALLURGY
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- 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
- C08G18/4829—Polyethers containing at least three hydroxy groups
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- 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
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- 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
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
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- 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
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- 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
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6611—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
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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
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
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- C—CHEMISTRY; METALLURGY
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- 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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
Abstract
The invention discloses a kind of polyurethane material and preparation method thereof for renovating high-speed rail Mud pumping disease, the mass parts ratio of polyurethane material component A and polyurethane material B component, component A and B component is 0.1:1~10:1.Polyurethane material component A, include 50~100 parts of polyalcohol modified methyl diphenylene diisocyanate, 50~100 parts of polymethylene multi-phenenyl isocyanate, 1~50 part of plasticizer A, 1~20 part of diluent solvent oil, polyurethane material B component, containing polyalcohol, the polyalcohol be polyether polyol, polyester polyol, polyurea polylol, polyolefin polyhydric alcohol, graft polyol, biopolyol, two or more polyalcohol composition in ending amino polyether mixture.The activity of inventive gel reaction is much larger than foamable reaction, greatly reduces the reaction sensibility to the hydrone in environment, and density and strength retention are obviously improved, and can more efficiently be suitable for high-speed railway subgrade and rise soil the regulation of disease.
Description
Technical field
The present invention relates to a kind of polyurethane injecting paste materials and preparation method thereof.
Background technique
With the fast development of China railways cause, " Eight Verticals and Eight Horizontals " main channel is just gradually formed, until the end of the year 2017, the whole nation
The length of railroad lines in service is up to 12.7 ten thousand kilometers, and wherein 2.5 ten thousand kilometers of high-speed railway, China have been completed go-go iron in the world
Road network and most flourishing high iron net.At high speed, high density, long range cross-line transport be China's Line for Passenger Transportation operation characteristic.For
Meet traffic safety, the comfortable by bus and requirement driven a vehicle on schedule, visitor specially and high-speed rail route must have it is smooth, stable, durable and
The performance repaired less.This just puts forward higher requirements the quality of railway base.However China is that roadbed disaster takes place frequently big country, frost boiling
It is higher and higher to emit the diseases problem frequency of occurrences such as mud, subgrade settlement, leads to the irregularity of track circuit, is degrading bullet train
Running environment and traffic safety are badly in need of effective administering method.
The phenomenon of rising soil is, under the Moving Loads of train, fine grained soil is gradually moved in roadbed soil layer
To surface layer of subgrade bed (graded broken stone layer), in rain erosion, wash away and train cyclic loading effect under, mud gastric disorder causing nausea to surface layer of subgrade bed
The phenomenon that.Its main cause be formed between unballasted track bed plate (or supporting course) and roadbed surface layer hang in dead zone generate
Ponding, high frequency train cyclic loading act under (dynamic load), hang the beating and swabbing action of dead zone receiving repeatedly, originally static
Fine grained soil and water are thoroughly mixed to form mud, and with the increase of pore pressure, gradually gastric disorder causing nausea forms frost boiling and emit mud to bedding surface
Mud.
For high-speed railway, due to its operation characteristic, repair that the skylight phase is very short, usual one day only less than 4 hours can
The maintenance activity time, administering this requires the maintenance of roadbed must be quickly and effectively.Traditional cement inorganic material and its maintenance side
Case is difficult to meet the requirements.Various high polymer grouting materials are applied to Mud pumping disease more and more and control in recent years
Reason, especially polyurethane injecting paste material, since it is fast with reaction speed and can adjust on demand, serum viscosity is smaller, mobility
Well, the features such as expansive force is adjustable, lifting property is controllable, and asepsis environment-protecting is safe is well suited for carrying out the improvement of subgrade defect.
But for general polyurethane injecting paste material, chemical reaction mechanism is determined, if in the ring of moist ponding
Construct under border, slurries reacted after encountering water molding material will appear solidification it is bad, density and mechanical property obviously deteriorate, drop
Its low military service performance and durability.And have occurred and that the roadbed position for disease of rising soil, it is often very damp in its graded broken stone
It is wet so contain a large amount of ponding, it is clear that performance of the commercially available common polyurethane injecting paste material under the adverse circumstances of this more water
It can occur obviously to deteriorate, can not meet bearing requirements and life requirement.
Summary of the invention
The purpose of the present invention is to provide a kind of polyurethane material for renovating high-speed rail Mud pumping disease and its preparations
Method meets the needs of related fields application to overcome defect of the existing technology.
Present invention firstly relates to a kind of polyurethane material component As for renovating high-speed rail Mud pumping disease, and described is whole
The polyurethane material component A of high-speed rail Mud pumping disease is controlled, (the letter of polyalcohol modified methyl diphenylene diisocyanate is included
Claim polyalcohol modified MDI) 50~100 parts, 50~100 parts of polymethylene multi-phenenyl isocyanate (abbreviation PAPI), plasticizer A 1
~50 parts, 1~20 part of diluent solvent oil；
The component A is light yellow to brown liquid, degree of functionality 2.2-2.9.It is more wherein in polyalcohol modified MDI
First alcohol is 2 degree of functionality polyether polyol, and number-average molecular weight is 200~2000.Preferably polyethers 206, polyethers 210, polyethers
220, polytetramethylene ether diol -1000 (PTMEG-1000), one in polytetramethylene ether diol -1000 (PTMEG-2000)
Kind or more.
The PAPI is the mixture that the more phenyl ring aromatic isocyanates built bridge by methylene are constituted, and is selected from Yantai ten thousand
PM200, the 44V20 of Cohan wound company or the M20S of BASF AG of Hua company；
The plasticizer A is dioctyl phthalate, dibutyl phthalate, dioctyl adipate, adjacent benzene two
Formic acid dinonyl, tributyl citrate, 2,2,4- trimethyl -1,3- pentanediol mono isobutyrate, 2,2,4- trimethyl -1,3-
One of pentanediol double isobutyrate, castor oil, epoxidized soybean oils etc. or a variety of mixtures.
The diluent solvent oil is 120# rubber solvent naphtha, 190# detergent oil, 200# paint naphtha, 260# spy
One of kind kerosene type solvent naphtha etc. or a variety of mixtures；
The invention further relates to a kind of polyurethane material B component for renovating high-speed rail Mud pumping disease, the regulations
The polyurethane material B component of high-speed rail Mud pumping disease, containing polyalcohol, the polyalcohol is polyether polyol, gathers
Ester polyol, polyurea polylol, polyolefin polyhydric alcohol, graft polyol, biopolyol, two kinds in ending amino polyether or
The mixture of two or more polyalcohol compositions；Polyalcohol average functionality is 3~8, and molecular weight is 200~2000.The present invention
It is not intended to limit the number of alcoholic extract hydroxyl group in the polyalcohol, can be one of dihydric alcohol, trihydroxylic alcohol, tetrahydroxylic alcohol etc. and/or one
Kind or more mixture, the small molecule polyol that preferably structure is simple, performance is stable；
Preferably, the polyalcohol is the mixture of one or more of ending amino polyether and following polyalcohol:
Polyether polyol, polyester polyol, polyurea polylol, polyolefin polyhydric alcohol, graft polyol or bio-based polyhydric
Alcohol, such as the polyether-tribasic alcohol of MW=600, the polyethers tetrahydroxylic alcohol of MW=800, the polyester polyol of MW=400, terminal hydroxy group polybutadiene
Alkene and terminal hydroxy group siloxanes；
By weight: the dosage of ending amino polyether is the 10~30% of the total dosage of polyalcohol；
Preferably, the polyurethane material B component of the regulation high-speed rail Mud pumping disease is polyalcohol, plasticising
Agent, chain extender, crosslinking agent, coupling agent, catalyst, surfactant and foaming agent mixture；
Preferably, the B component includes the component of following mass fraction:
The plasticizer B be dioctyl phthalate, dibutyl phthalate, diisononyl phthalate,
Triethyl phosphate, 1- methoxy-2-propanol, 2,2,4- trimethyl -1,3- pentanediol mono isobutyrate, trimethyl -1 2,2,4-,
One of 3- pentanediol double isobutyrate, trioctyl trimellitate (TOTM), cashew nut shell oils etc. or a variety of mixtures.
The chain extender is ethylene glycol, diglycol, dipropylene glycol, 1,4- butanediol and 1,6-HD
One of or a variety of mixtures.
The crosslinking agent be one of glycerol, neopentyl glycol, pentaerythrite, triethanolamine, trimethylolpropane or
A variety of mixtures.
The coupling agent be one of silane resin acceptor kh-550, KH-560 and aluminate coupling agent DL411 with
On；
The catalyst is the tertiary amines such as fatty amines, alicyclic ring amine, aromatic amine, alcamines and its ammonium salt compounds
Class catalyst, such as the organo-metallic catalysts such as A-1, A-33 and dibutyl tin dilaurate, stannous octoate, isooctyl acid lead
One or more mixtures.
The surfactant is organic silicon surfactant, predominantly polysiloxanes-oxyalkylene block copolymer.
Preferably one kind or more of AK-158, AK-8805 (being purchased from Mei Side), L-6860 (purchased from figure is stepped), B8423 (being purchased from Degussa)
The mixture of kind；
The foaming agent is the mixture of fluorine dichloroethanes (HCFC-141b) and water, and water is main foaming agent, HCFC-
141b is auxiliary blowing agent；
The polyurethane material of the regulation high-speed rail Mud pumping disease, including the component A and B component, A group
Divide and the mass parts ratio of B component is 0.1:1~10:1；
Preparation method of the invention, includes the following steps:
(1) each raw material in the component A is stirred 1~3h of reaction at 50~90 DEG C, after be down to room temperature, wrap
Dress storage, forms the component A；Preferably, isocyanate group and the hydroxyl molar ratio of polyalcohol are 2:1~5:1；
(2) each raw material in B component is mixed into 1~2h at 50 DEG C, after be down to room temperature, packing and storing forms the B group
Point；
(3) component A and B component are added in slip casting machine associated bucket respectively, are heated to 25~40 DEG C, it is mixed by head
Close reaction, it is preferable that the mass parts ratio of component A and B component is 0.1:1~10:1.It is high that slip casting can be obtained the regulation
The polyurethane material of iron Mud pumping disease.
The polyurethane material of regulation high-speed rail Mud pumping disease of the present invention, can be used for renovating high speed
The disease of rising soil that railway bed occurs.
The present invention introduces the high reactivity polyalcohol such as amine terminated polyether in the reaction system, by with high activity small molecule
The coordinateds such as chain extension/crosslinking agent and plasticizer, diluent, in optimal match ratio, the activity of gel reaction is long-range
In foamable reaction, be allowed in material reaction process, greatly reduce the reaction sensibility to the hydrone in environment, density and
Strength retention is obviously improved.
The polyurethane material of regulation high-speed rail Mud pumping disease of the invention, hydro-insensitive compare common poly- ammonia
Ester injecting paste material greatly improves, and the density conservation rate in full water environment is increased to 75% or so by 30% or so, and compression is strong
It spends conservation rate and is increased to 70% or so by 30% or so, meet the bearing requirements of high-speed rail roadbed；And material shrinkage also has
It is substantially reduced, is down to 0.5% or so by 5% or so.The ring of polyurethane injecting paste material greatly improved in excellent hydro-insensitive
Border adaptability makes it still be able to maintain higher bearing strength and durability in moist, ponding railway sub-grade environment, extends
The service life of material can more efficiently be suitable for high-speed railway subgrade frost boiling and emit in conjunction with scientific and reasonable construction technology
The regulation of mud disease.
The present invention has the advantages that
The raw material of preferred structure is selected, and each raw material is mixed with preferred formula, by physico between raw material
Learning synergistic effect makes this injecting paste material have excellent hydro-insensitive, substantially increases its holding under the geological environment of rich water
Loading capability and durability, insensitive to the water in construction environment, good fluidity, expansive force is controllable, high-adhesion energy, has excellent
Volume stability, low residual deformation and hydrolytic Resistance polyurethane injecting paste material, to overcome existing conventional polyurethanes material
The existing defect to water sensitive improves bearing capacity and durability of the injecting paste material in the case where having water and wet environment, meets clothes
Labour requires.
Specific embodiment
Embodiment is provided below in conjunction with the present invention, but the present invention is not limited only to this.
Embodiment is prepared as follows:
Each raw material in component A is matched to be added in reaction kettle by setting and is warming up to 70~75 DEG C of 2~3h of stirring, is allowed to fill
Divide and react and be uniformly mixed, then discharging packaging, obtains the component A.
Each raw material in B component is added to container for stirring 1h by setting proportion, is allowed to uniformly mixed, discharging packaging is
Obtain the B component.
Component A is sufficiently mixed by the proportion of setting with special slip casting machine with B component again and is reacted, it is poly- to obtain water non-sensitive type
Urethane injecting paste material.
The judgment method of hydro-insensitive are as follows:
The mixed slurry of two component of A, B is poured into water rapidly (water need to not have slurries completely), what is foamed is
Injecting paste material foam under full water environment.The density and 10% compressive strength for testing its foam core are got with foaming in air
The core density freely steeped and compressive strength compare, you can get it density conservation rate and compressive strength conservation rate.Density
Conservation rate and compressive strength conservation rate are higher, then hydro-insensitive is better.
Embodiment 1-10
In each embodiment, in more phenyl ring aromatic isocyanates:
Embodiment 1: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight
It is 200.
Embodiment 2: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight
It is 400.
Embodiment 3: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight
It is 600.
Embodiment 4: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight
It is 1000.
Embodiment 5: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PTMG of 2 degrees of functionality, molecular weight
It is 250.
Embodiment 6: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight
It is 650.
Embodiment 7: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Cohan wound company, and product grade is
44V20；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PTMG of 2 degrees of functionality, molecular weight
It is 1000.
Embodiment 8: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Wan Hua company, product grade PM200；
In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight 200.
Embodiment 9: poly methylene poly phenyl poly isocyanate (PAPI) is provided by Wan Hua company, product grade PM200；
In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, molecular weight 400.
Embodiment 10: poly methylene poly phenyl poly isocyanate (PAPI) is provided by BASF AG, and product grade is
M20S；In polyalcohol modified methyl diphenylene diisocyanate, polyalcohol is the polyether polyol PPG of 2 degrees of functionality, and molecular weight is
600。
Table 1: the formula and the performance table of comparisons of specific embodiment and comparative example
Table 2 connects table 1
Note: 1. raw materials are all calculated based on parts by weight.
2. foam density, compressive strength, size changing rate are all measured by national standard.
By table as it can be seen that in the present invention with embodiment prepare water non-sensitive type polyurethane injecting paste material, density conservation rate,
Compressive strength conservation rate, dimensional stability are all significantly better than the regular convention formula polyurethane material in reference examples, show this material
Excellent hydro-insensitive can be greatly improved as injecting paste material in the railway bed ring that the rich water for disease of rising soil has occurred
Bearing capacity and durability in border.
Claims (12)
1. renovating the polyurethane material component A of high-speed rail Mud pumping disease, which is characterized in that include polyalcohol modified hexichol
50~100 parts of dicyclohexylmethane diisocyanate, 50~100 parts of polymethylene multi-phenenyl isocyanate, 1~50 part of plasticizer A,
1~20 part of diluent solvent oil.
2. the polyurethane material component A of regulation high-speed rail Mud pumping disease according to claim 1, feature exist
In degree of functionality 2.2-2.9, wherein polyalcohol is 2 degree of functionality polyether polyol in polyalcohol modified MDI, number-average molecular weight is
200~2000.
3. the polyurethane material component A of regulation high-speed rail Mud pumping disease according to claim 1, feature exist
In the plasticizer A is dioctyl phthalate, dibutyl phthalate, dioctyl adipate, phthalic acid two
Different nonyl ester, tributyl citrate, 2,2,4- trimethyl -1,3- pentanediol mono isobutyrate, 2,2,4- trimethyl -1,3- pentanediol
One of double isobutyrates, castor oil or epoxidized soybean oil are a variety of.
4. renovating the polyurethane material B component of high-speed rail Mud pumping disease, which is characterized in that described containing polyalcohol
Polyalcohol is polyether polyol, polyester polyol, polyurea polylol, polyolefin polyhydric alcohol, graft polyol, bio-based polyhydric
The mixture of two or more polyalcohol composition in alcohol, ending amino polyether.
5. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 4, feature exist
In the polyalcohol average functionality is 3~8, and molecular weight is 200~2000.
6. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 4, feature exist
In the polyalcohol is the mixture of one or more of ending amino polyether and following polyalcohol:
Polyether polyol, polyester polyol, polyurea polylol, polyolefin polyhydric alcohol, graft polyol or biopolyol.
7. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 6, feature exist
In by weight: the dosage of ending amino polyether is the 10~30% of the total dosage of polyalcohol.
8. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 4, feature exist
In, be polyalcohol, plasticizer, chain extender, crosslinking agent, coupling agent, catalyst, surfactant and foaming agent mixture.
9. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 8, feature exist
In the component comprising following mass fraction:
10. the polyurethane material B component of regulation high-speed rail Mud pumping disease according to claim 9, feature exist
In the plasticizer B is dioctyl phthalate, dibutyl phthalate, diisononyl phthalate, tricresyl phosphate
Ethyl ester, 1- methoxy-2-propanol, 2,2,4- trimethyl -1,3- pentanediol mono isobutyrate, 2,2,4- trimethyl -1,3- penta 2
One of the double isobutyrates of alcohol, trioctyl trimellitate (TOTM) or cashew nut shell oil or a variety of mixtures.
The chain extender is in ethylene glycol, diglycol, dipropylene glycol, 1,4- butanediol and 1,6-HD
One or more mixtures.
The crosslinking agent is one of glycerol, neopentyl glycol, pentaerythrite, triethanolamine, trimethylolpropane or a variety of
Mixture.
The coupling agent is one or more of silane coupling agent or aluminate coupling agent；
The catalyst is that fatty amines, alicyclic ring amine, aromatic amine, alcamines and its ammonium salt compounds or tertiary amines are urged
Agent；
The surfactant is organic silicon surfactant；
The foaming agent is the mixture of a fluorine dichloroethanes and water.
11. renovating the polyurethane material of high-speed rail Mud pumping disease, which is characterized in that including any one of claims 1 to 3
The polyurethane material component A and the described in any item polyurethane material B components of claim 4~10, component A and B component
Mass parts ratio be 0.1:1~10:1.
12. the method for preparing the polyurethane material of regulation high-speed rail Mud pumping disease described in claim 11, feature
It is, includes the following steps:
(1) each raw material in the component A is stirred 1~3h of reaction at 50~90 DEG C, after be down to room temperature, packaging storage
It deposits, forms the component A；Preferably, isocyanate group and the hydroxyl molar ratio of polyalcohol are 2:1~5:1；
(2) each raw material in B component is mixed into 1~2h at 50 DEG C, after be down to room temperature, packing and storing forms the B component；
(3) component A and B component are added in slip casting machine associated bucket respectively, are heated to 25~40 DEG C, mixed by head anti-
It answers, slip casting can be obtained the polyurethane material of the regulation high-speed rail Mud pumping disease.
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Application publication date: 20181218 |