CN109957090A - A kind of preparation method of railroad track liquid rubber cushion blocking - Google Patents
A kind of preparation method of railroad track liquid rubber cushion blocking Download PDFInfo
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- CN109957090A CN109957090A CN201910327242.4A CN201910327242A CN109957090A CN 109957090 A CN109957090 A CN 109957090A CN 201910327242 A CN201910327242 A CN 201910327242A CN 109957090 A CN109957090 A CN 109957090A
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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
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Abstract
The present invention relates to railway antivibration areas, and in particular to a kind of railroad track preparation method of liquid rubber cushion blocking.Include the following steps: that the water of the high rebound polyethers of 100 parts by weight, (10~50) parts by weight graft polyether, (1~5) parts by weight aliphatic dihydroxy alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of (1~5) parts by weight, the organic silicon surfactant of (0.2~1.5) parts by weight, (0~2) parts by weight is stirred by (1) at room temperature；(2) calcium carbonate of (0~20) parts by weight and the auxiliary agent of (0.1~10) parts by weight are added in mixture obtained in the first step, is stirred to obtain first component stand-by；(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of (0.1~0.3) parts by weight, (0.003~0.02) parts by weight tributyl phosphate be stirred to obtain second component it is stand-by；(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber cushion blocking.
Description
Technical field
The present invention relates to railway antivibration areas, and in particular to a kind of railroad track system of liquid rubber cushion blocking
Preparation Method.
Background technique
With the continuous improvement that people require train running speed, caused by how solving during high vehicle speeds
Vibration and impact become a very crucial problem.In order to reduce vibration, reduce noise, rail tie plate is devised.This iron
Track plate in practical engineering applications, between cement sleeper and rail, using the elasticity of itself, plays reduction rigid material
Between it is generated vibration and noise purpose.Therefore it is required that the spring constant of railroad tie plate is non-on damping, noise reduction effect influence
Chang Mingxian, spring constant are a kind of parameters of static rigidity for characterizing product.If spring constant is excessively high, backing plate itself also becomes
A kind of rigid material does not have the effect of damping, noise reduction；If spring constant is too low, track pad is complete under rail active force
Holotype becomes, and does not also have the effect of damping, noise reduction.In addition, for the track of different designs speed, required spring constant
Standard is not also identical, the higher track circuit of speed, and the spring constant required shock-absorption backing plate is lower；The lower railway line of speed
Road, the requirement to the spring constant of shock-absorption backing plate are higher；For on the track circuit of same design speed, the speed of service of vehicle
Nor identical, in this case, the dynamic rate of track pad is more closer than with the ratio of static rigidity, rises
The damping and cushion performance arrived are better.
In summary various factors, it is desirable that for railroad tie plate material have appropriate dynamic rate, static rigidity with
And lesser springrate ratio, to guarantee that train can play good damping effect during low speed and high-speed cruising；Material
Material also needs lesser Compression Set and excellent fatigue performance, to guarantee the good compression property of track and subtract
Shake the property retention rate and service life of component；In addition, material also needs preferable solvent resistance, to guarantee the resistance to of component
Aging, corrosion-resistant and environmental suitability.
Summary of the invention
In view of the above technical problems, of the invention to provide a kind of preparation side of railroad track liquid rubber cushion blocking
Method includes the following steps:
(1) at room temperature by high the rebound polyethers, (10~50) parts by weight graft polyether, (1~5) parts by weight of 100 parts by weight
Aliphatic dihydroxy alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of (1~5) parts by weight, (0.2~1.5) parts by weight organosilicon
Surfactant, (0~2) parts by weight water be stirred；
(2) calcium carbonate and (0.1~10) parts by weight of (0~20) parts by weight are added in mixture obtained in the first step
Auxiliary agent is stirred to obtain first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, (0.1~0.3) parts by weight catalyst, (0.003~
0.02) tributyl phosphate of parts by weight is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
As a kind of perferred technical scheme, the weight ratio of the first component and the second component be (5:1)~(10:
1)。
As a kind of perferred technical scheme, the aliphatic dihydroxy alcohol is selected from ethylene glycol, propylene glycol, butanediol, penta 2
One of alcohol, hexylene glycol are a variety of；The weight of the aliphatic dihydroxy alcohol and quinhydrones-two (beta-hydroxyethyl) the paracresol ether
Ratio is 1:(0.8~1.2).
As a kind of perferred technical scheme, the hydroxyl value of the high rebound polyethers is 26~36mgKOH/g.
As a kind of perferred technical scheme, the high rebound polyethers average functionality is 3, weight average molecular weight is 5000~
6000。
As a kind of perferred technical scheme, the hydroxyl value of the graft polyether is 20-30mgKOH/g.
As a kind of perferred technical scheme, the viscosity of the graft polyether is no more than 3500cps/25 DEG C.
As a kind of perferred technical scheme, the partial size of the calcium carbonate is 1200~1300 mesh.
As a kind of perferred technical scheme, the auxiliary agent includes antioxidant, ultraviolet absorber, colorant, fire retardant.
As a kind of perferred technical scheme, post-processing described in (4) step includes the following steps: in track plates and bottom
Seat board cavity is laid with size unanimously and the film bag of inner vacuum, the material for being then mixed to get first component and second component pass through
Slip casting machine is injected into film bag, stands solidification.
Specific embodiment
It is further clear, complete that the technical characteristic work in technical solution is provided to the present invention With reference to embodiment
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Word " preferred ", " preferably ", " preferred " in the present invention etc. refer to, can provide certain in some cases
The embodiment of the present invention of a little beneficial effects.However, other embodiments may also under identical circumstances or in the case of other
It is preferred.In addition, not implying that other embodiments are unavailable to the statement of one or more preferred embodiments, it is not yet
It is intended to exclude other embodiments except the scope of the present invention.
It should be appreciated that expression for example illustrates in the case where in addition in any operational instances or otherwise pointing out
All numbers of the amount of ingredient used in book and claim should be understood to be modified by term " about " in all cases.
A kind of preparation method of railroad track liquid rubber cushion blocking is provided in the present invention, is included the following steps:
(1) at room temperature by high the rebound polyethers, (10~50) parts by weight graft polyether, (1~5) parts by weight of 100 parts by weight
Aliphatic dihydroxy alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of (1~5) parts by weight, (0.2~1.5) parts by weight organosilicon
Surfactant, (0~2) parts by weight water be stirred；
(2) calcium carbonate and (0.1~10) parts by weight of (0~20) parts by weight are added in mixture obtained in the first step
Auxiliary agent is stirred to obtain first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, (0.1~0.3) parts by weight catalyst, (0.003~
0.02) tributyl phosphate of parts by weight is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Heretofore described high rebound polyethers is one kind of polyether-based polymers, contains flexible ether linkage and work in strand
Property hydroxyl group.Hydroxyl group therein can react with groups such as carboxyl, isocyanates.High rebound in the present invention is poly-
Ether is mainly reacted with the isocyanates in second component, provides a degree of flexibility, and and chain extender for liquid rubber cushion blocking
Between synergistic effect under, the elasticity with liquid rubber cushion blocking.
Preferably, the hydroxyl value of the high rebound polyethers is 26~36mgKOH/g.
Further, the hydroxyl value of the high rebound polyethers is 26~30mgKOH/g.
Further, the high rebound polyethers average functionality is 2.5~3.2, and weight average molecular weight is 5000~6000.
Further, the high rebound polyethers average functionality is 3.
Further, the high rebound polyethers is EP-3600 product purchased from Guangzhou Wen Long Chemical Co., Ltd.'s trade mark.
Heretofore described graft polyether be the polyethers by general polyethers or containing double-strand olefinic monomer (such as styrene,
Acrylonitrile etc.) and initiator in the presence of, the special polyether for carrying out graft copolymerization (claim situ aggregation method reaction) preparation is more
First alcohol.It is polymer-polyethers dispersion, belongs to organic filled polyol, is used to prepare high-mechanic or high-modulus is soft and half
Hard polyurethane foams elastomeric article.
Preferably, the hydroxyl value of the graft polyether is 20~30mgKOH/g.
Further, the hydroxyl value of the graft polyether is 25-29mgKOH/g.
Further, the viscosity of the graft polyether is no more than 3500cps/25 DEG C.
Further, the viscosity of the graft polyether is 2500~3500cps/25 DEG C.
Further, the graft polyether selects Jurong Ningwu new material limited liability company, the product that the trade mark is 3630
(hydroxyl value 24-28mgKOH/g), or select company, outstanding Chemical Co., Ltd. POP3628 product (the hydroxyl value 25- of Shandong nine
29mgKOH/g)。
Since the resilient cushion in the application needs to bear frequent dynamic load in use, by height spring back polyethers and
The compounding of graft polyether obtains the springrate ratio value of relatively satisfactory compression set value and national regulation requirement.Height rebound
The height of the degree of functionality of polyethers and graft polyether, hydroxyl value etc. will have a direct impact on three-dimensional space cross-linked network in resilient cushion paradigmatic structure
Network content, and these crosslinking points can play a supporting role for foam structure, while the isocyanates in system and foaming agent (water)
While reaction forms foam, new cross-linked structure is also had.And contain when polyethers reacts the cross-linked network to be formed with isocyanates
It when amount is few, cannot be supported well since isocyanates reacts the abscess to be formed with water, be easy to make abscess avalanche, abscess closes
And cause resilient cushion density small, it is poor to be easily deformed Weir recovery effects.And when polyethers reacts the cross-linked network to be formed with isocyanates
When network content is excessive, it is easy to make the viscosity of system too big, isocyanates reacts the abscess to be formed with water and is not easy to grow up, and is formed small
And the abscess of closed pore, cause the porosity of resilient cushion small, gasket is hardened, and cannot play the effect of damping noise reduction well.
The degree of functionality of high rebound polyethers largely determines the content of cross-linked network structure, function in the present invention
It spends that bigger, hydroxyl value is higher, reacts that the cross-linked network to be formed is more intensive, and crosslink density is big with isocyanates, vice versa.In addition,
The dosage of polyethers, chain extender etc. in first component, polyethers hydroxyl value, viscosity etc. also can largely influence the first and second components and mix
Reaction severe degree afterwards, and situations such as the severe degree of reaction process also will have a direct impact on the formation of abscess complex, grow up.Cause
This, applicant springs back the parameters such as dosage, degree of functionality, hydroxyl value, the viscosity of polyethers and graft polyether, Yi Jikuo by the height to compounding
Chain agent, the regulation of the first and second amounts of components are made to be subject to component content of above two cross-linked structure in reaction and matched, come with this
Obtain that cell size, shape are uniform, and internal microstructure is orderly, the resilient cushion of Qiang Erren.
In some preferred embodiments, the weight ratio of the first component and the second component be (5:1)~(10:
1)；Preferably, the weight ratio of the first component and the second component is 1:6.5.
In some preferred embodiments, the aliphatic dihydroxy alcohol is selected from ethylene glycol, propylene glycol, butanediol, penta 2
One of alcohol, hexylene glycol are a variety of；The weight of the aliphatic dihydroxy alcohol and quinhydrones-two (beta-hydroxyethyl) the paracresol ether
Ratio is 1:(0.8~1.2).
Since the weight ratio in the first and second components between reactive ingredients will affect the NCO content after mixing in system, and
The urethane ingredients formed after NCO and chain extender reaction are harder, and elasticity is poor, therefore when the dosage of first component is excessive,
Due to NCO content deficiency, can make to prepare the very soft of resulting damping change, intensity and rigidity are poor.And when second constituent content is excessive
When, the hard segment content in system is too high, and soft segment is insufficient, whiles influencing resilient cushion intensity etc., have an effect on resilient cushion it is dynamic just
Degree and Static stiffness value, but will influence its springrate ratio.
In addition, it is found by the applicant that passing through the tune to small molecule aliphatic chain extender and aromatic diol chain extender usage ratio
Control, while capable of also improving the springrate ratio of resilient cushion to a certain extent, moreover it is possible to while reducing the permanent compression of resilient cushion
Rate, making gasket, deformation recovery capability is improved in use, improves the safety of train operation.It may be because in hydrogen
The rigid radicals such as the phenyl ring in quinone-two (beta-hydroxyethyl) paracresol ether molecular structure for the aliphatic alcohols such as propylene glycol,
The hardness of gasket but will be made to be increased, therefore the soft or hard degree of gasket can be regulated and controled by the adjusting of usage ratio therebetween.
Moreover, the discovery that applicant is unexpected, by the dosage for adjusting above two chain extender, moreover it is possible to improve the foaming effect of resilient cushion
Fruit.Applicant by resilient cushion surface and section it has been observed that when the usage ratio of two kinds of chain extenders is improper, resilient cushion
In abscess hole shape it is irregular, pore size is uneven, carry out tensile and compression test process be easy in irregular abscess
Situations such as place is broken, non-resilient compression significantly affects the wearability of gasket.
In some preferred embodiments, the partial size of the calcium carbonate is 1200~1300 mesh.
Preferably, the partial size of the calcium carbonate is 1200 mesh.Carbonic acid can be analyzed by laboratory dedicated analysis vibrating screen
The partial size of calcium.
It further, include the modified nano calcium carbonate of 1~3 parts by weight in calcium carbonate.
Further, the preparation method of the modified nano calcium carbonate includes the following steps:
Deionized water ultrasonic disperse 45min will be added in a certain amount of nanometer calcium carbonate, heating systems temperature is to 75 DEG C, so
After coupling agent is added, be stirred to react 2 hours, be cooled to room temperature, filter, filter cake washing, drying, grind to obtain the final product.
Further, the coupling agent includes C6~C16 carbochain silane coupling agent.
Further, C6~C16 carbochain silane coupling agent selects C12 carbochain silane coupling agent, selects N- dodecane
Base trimethoxy silane, N- dodecyl triethoxysilane, one of dodecyl methyl dimethoxysilane or a variety of.
Further, the coupling agent further includes mercaptosilane coupling agents (such as 3- mercaptopropyl trimethoxysilane).
Further, the weight ratio of the mercaptosilane coupling agents and C6~C16 carbochain silane coupling agent is 1:
2。
Disperse inside raw material since nanometer calcium carbonate is prepared in resilient cushion, energy suffered by absorbent patch, improves gasket
Fracture and energy required for compressing, the deformation so as to improve gasket is restorative and intensity.However due to nanometer calcium carbonate itself
There are biggish differences between the organic materials such as polyethers, isocyanates in inorganic material structure and system, mixed in the first and second components
Compatibility, the dispersibility etc. between other components when conjunction in nanometer calcium carbonate and system is obstructed, and toughness, the bullet of resilient cushion are caused
Property etc. be deteriorated, wearability especially under high temperature, the environment such as strong acid and strong base reduces, and also will affect the damping, slow of resilient cushion
The performance of the functions such as punching, noise reduction.It is found by the applicant that part nanometer calcium carbonate is replaced using a certain amount of modified nano calcium carbonate,
It can be very good to improve dispersion and compatibility of the nanometer calcium carbonate in the first and second component of resilient cushion, so that resilient cushion is with more high-strength
Degree, the performances such as high temperature resistance is corrosion-resistant.It may be to be avoided due to introducing some organic backbone segments on nanometer calcium carbonate surface
The reunion of nanometer calcium carbonate, and improve compatibility and dispersion in itself and high rebound polyethers, graft polyether, isocyanates etc.
Property, avoid glue layer from stress concentration point occur, so as to improve its toughness and intensity.
In addition, it is found by the applicant that being not only avoided that nanometer calcium carbonate is rigid to the sound of resilient cushion using modified nano calcium carbonate
Spend the influence of the performances performances such as ratio, intensity, moreover it is possible to which the anti-hydrolytic performance for improving resilient cushion by the compounding to wherein coupling agent changes
It is apt to resistance to strong acid, resistance to highly basic, the performances such as resistance to salt corrosion.Itself the possible reason is, the flexible alkyl chains in modified nano calcium carbonate
Under effect, while the compatibility and dispersibility of nanometer calcium carbonate are improved, moreover it is possible to improve the first and second components and occur instead in mixing
The intensity of seasonable fluid, while not increasing system viscosity, by slightly tangling between flexible alkyl long-chain come stabilising system
The abscess of middle formation is avoiding nanometer calcium carbonate to the destruction of foam structure, is avoiding the formation of the uneven abscess of size, simultaneously because
Long alkyl chain is while having reasonable porosity, density in resilient cushion, to have excellent compression to the stabilization of abscess
Deformation ratio, the performances such as stability.
In some preferred embodiments, the auxiliary agent includes antioxidant, ultraviolet absorber, colorant, fire retardant.
Heretofore described ultraviolet absorbing agent does not carry out particular determination, includes but is not limited to have: 2- (2- hydroxyl-
5- aminomethyl phenyl) benzotriazole, 2- (2- hydroxyl -5- butyl phenyl) benzotriazole, 2- (2- hydroxyl -5- octyl phenyl) benzo three
Azoles, 2- (3- tert-butyl -2- hydroxy-5-methyl base phenyl) -5- chlorobenzotriazole, 2- (bis- tertiary pentyl -2- hydroxy phenyl of 3,5-) benzene
And the benzotriazole such as triazole, -5 chlorinated benzotriazole of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) phenyl) it is ultraviolet radiation absorption
Agent；The benzophenone series ultraviolet radiation absorptions such as ESCALOL 567,2- hydroxyl -4- n-octyl oxygroup benzophenone
Agent；2- [bis- (2,4- the 3,5-dimethylphenyl) -1,3,5- triazine -2- bases of 4,6-] -5- (octyl oxygroup) phenol, 2- (4,6- diphenyl -
1,3,5- triazine -2- base) the triazines system ultraviolet absorbing agent such as -5- (hexyl oxygroup) phenol；P-t-butylphenyl salicylate, bigcatkin willow
The salicylates such as acid phenenyl ester system ultraviolet absorbing agent etc.；It is preferable to use -5 chlorine of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) phenyl
For benzotriazole).
Antioxidant in the present invention does not carry out particular determination, including but not limited to copper compound, organic or inorganic halogen
Chlorins compound, Hinered phenols, hindered amines, hydrazine, sulphur class compound, sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, secondary phosphorus
The antioxidant of the phosphorus species of sour magnesium etc. etc..It is preferable to use tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid
Pentaerythritol ester.
Particular determination is carried out to the colorant in the present invention, all kinds of colouring materials such as carbon black, Masterbatch can be selected.
Particular determination, including but not limited to phosphoguanidine, ammonium phosphate, phosphoric acid melamine are carried out to the fire retardant in the present invention
Amine, triphenyl phosphate, tricresyl phosphate (bis- chloropropyl of 2,3-) ester, ammonium polyphosphate, phosphate, tricresyl phosphate, trichloroethyl phosphorus
Acid, melamine etc..It is preferable to use melamines.
In some preferred embodiments, post-processing described in (4) step includes the following steps: in track plates and bottom
Seat board cavity is laid with size unanimously and the film bag of inner vacuum, the material for being then mixed to get first component and second component pass through
Slip casting machine is injected into film bag, stands solidification.Specifically, in advance prepare one with extra quality tank, automatic gauge, automatic charging, from
Move the slip casting machine of stirring, automatic pumping.It is laid with the film bag for the inner vacuum that size is consistent with base plate cavity in track plates in advance,
This film bag is airtight.First component and second component are injected into batch can, slip casting machine is opened, makes its automatic gauge, automatic charging, automatic stirring
Mix, automatic pumping, mixture pump be sent into film bag interface, mixture enter after film bag can Self-leveling, self-leveling basal plane, then by swollen
Swollen ratio is expanded, and space filling is expired, and adjust automatically is gradually solidified, eventually forms adaptation everywhither after consistent in density
The uniform micro-pore elastomer Rubber shock-absorbing pad of basal plane.
Diisocyanate in the present invention does not carry out particular determination, including but not limited to aliphatic diisocyanate,
Alicyclic diisocyanate, aromatic diisocyanate, aliphatic triisocyanate, polyisocyanates etc..
As aliphatic diisocyanate, for example, trimethylene diisocyanate, tetramethylene diisocyanate, Asia
Amyl diisocyanate, 1, hexamethylene-diisocyanate, 1,2- trimethylene diisocyanate, 1,2- tetramethylene diisocyanate, 2,
3- tetramethylene diisocyanate, 1,3- tetramethylene diisocyanate, 2,4,4- or 2,2,4- trimethyls 1, hexamethylene-diisocyanate,
2,6- diisocyanate base methyl caproates etc..
As the example of alicyclic diisocyanate, 1,3- pentamethylene diisocyanate, Isosorbide-5-Nitrae-hexamethylene can be enumerated
Diisocyanate, 1,3- cyclohexane diisocyanate, 3- isocyanatomethyl -3,5,5- tri-methyl cyclohexane diisocyanate is (not
Name: isophorone diisocyanate), 4,4 '-methylene two (cyclohexyl isocyanate), methyl -2,4- hexamethylene diisocyanate
Bis- (isocyanatomethyl) hexamethylenes of ester, methyl -2,6- cyclohexane diisocyanate, 1,3-, 1,3- bis- (ethyl isocyanate bases)
Bis- (ethyl isocyanate base) hexamethylenes of hexamethylene, Isosorbide-5-Nitrae-, 2,5- or 2,6- bis- (isocyanatomethyl) norbornane (NBDI) and
Its mixture etc..
It as the example of aromatic diisocyanate, can enumerate: 2,4- toluene di-isocyanate(TDI)s and 2,6- toluene two
The isomer mixture of isocyanates and the toluene di-isocyanate(TDI), 4,4 '-'-diphenylmethane diisocyanates, 2,4 '-two
Phenylmethane diisocyanate and 2,2 '-'-diphenylmethane diisocyanates and the '-diphenylmethane diisocyanate it is arbitrary
Isomer mixture, toluene di-isocyanate(TDI), to phenylene diisocyanate, naphthalene diisocyanate etc..
In a preferred embodiment, the isocyanates is selected from: 2,4- toluene di-isocyanate(TDI)s, 2,6- toluene two
Isocyanates, dimethyl diphenyl diisocyanate, 2,4 difluorobenzene based isocyanate, 2,3- dichlorophenyl isocyanate, front three
Base hexamethylene diisocyanate, hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, isophorone diisocyanate,
Any one or a few mixing in 1,3- cyclohexane diisocyanate, '-diphenylmethane diisocyanate.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following embodiment is only used
In the invention will be further described, it should not be understood as limiting the scope of the invention, professional and technical personnel in the field
The some nonessential modifications and adaptations made according to the content of aforementioned present invention, still fall within protection scope of the present invention.
In addition, if without other explanations, it is raw materials used to be all commercially available, it is purchased from traditional Chinese medicines chemical reagent.
Embodiment
Embodiment 1A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 10 parts by weight graft polyethers, 1 parts by weight binary aliphatic of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 1 parts by weight, the organic silicon surfactant of 0.2 parts by weight, 0.5 parts by weight
Water is stirred；
(2) calcium carbonate of 1 parts by weight and the auxiliary agent of 0.1 parts by weight are added in mixture obtained in the first step, stirring is mixed
It is stand-by that conjunction obtains first component；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.1 parts by weight, 0.003 parts by weight phosphoric acid
Tributyl is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 5:1；The high rebound polyethers is purchased from Guangzhou text Long Huagong
Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；The grafting
Polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is that 3630 (hydroxyl value 24-28mgKOH/g, average functionality are
3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, purchased from vertical limited up to ultra micro industry
Company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is the third two
Alcohol；The diisocyanate is '-diphenylmethane diisocyanate.
Embodiment 2A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 50 parts by weight graft polyethers, 5 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 5 parts by weight, the organic silicon surfactant of 1.5 parts by weight, 2 parts by weight water
It is stirred；
(2) calcium carbonate of 20 parts by weight and the auxiliary agent of 10 parts by weight are added in mixture obtained in the first step, stirring is mixed
It is stand-by that conjunction obtains first component；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.3 parts by weight, 0.02 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 10:1；The high rebound polyethers is purchased from Guangzhou text Long Huagong
Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；The grafting
Polyethers selects the outstanding Chemical Co., Ltd. in Shandong nine, and the trade mark is POP3628 product (hydroxyl value 25-29mgKOH/g, average functionality
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is second two
Alcohol.
Embodiment 3A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 35 parts by weight graft polyethers, 4 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 3.2 parts by weight, the organic silicon surfactant of 1.2 parts by weight, 1 parts by weight
Water is stirred；
(2) calcium carbonate and auxiliary agent of 15 parts by weight are added in mixture obtained in the first step, is stirred to obtain first group
Divide stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.2 parts by weight, 0.01 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 6.5:1；The high rebound polyethers is purchased from Guangzhou Wen Longhua
Work Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；It is described to connect
Branch polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is 3630 (hydroxyl value 24-28mgKOH/g, average functionalities
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is the third two
Alcohol.
Embodiment 4A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 35 parts by weight graft polyethers, 4 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 4.8 parts by weight, the organic silicon surfactant of 1.2 parts by weight, 1 parts by weight
Water is stirred；
(2) calcium carbonate and auxiliary agent of 15 parts by weight are added in mixture obtained in the first step, is stirred to obtain first group
Divide stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.2 parts by weight, 0.01 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 6.5:1；The high rebound polyethers is purchased from Guangzhou Wen Longhua
Work Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；It is described to connect
Branch polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is 3630 (hydroxyl value 24-28mgKOH/g, average functionalities
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is the third two
Alcohol.
Embodiment 5A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 35 parts by weight graft polyethers, 4 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 4 parts by weight, the organic silicon surfactant of 1.2 parts by weight, 1 parts by weight water
It is stirred；
(2) calcium carbonate, 3 parts of modified calcium carbonates and auxiliary agent of 12 parts by weight are added in mixture obtained in the first step, stirs
Mix that be mixed to get first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.2 parts by weight, 0.01 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 6.5:1；The high rebound polyethers is purchased from Guangzhou Wen Longhua
Work Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；It is described to connect
Branch polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is 3630 (hydroxyl value 24-28mgKOH/g, average functionalities
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is the third two
Alcohol；The preparation method of the modified calcium carbonate includes the following steps:
Deionized water ultrasonic disperse 45min, heating systems temperature will be added in a certain amount of nanometer calcium carbonate (200 nanometers)
To 75 DEG C, coupling agent (12wt% for accounting for nanometer calcium carbonate amount) then is added, is stirred to react 2 hours, is cooled to room temperature, filters,
Filter cake washing, drying are ground to obtain the final product.
The coupling agent is 3- mercaptopropyl trimethoxysilane.
Embodiment 6A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 35 parts by weight graft polyethers, 4 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 4 parts by weight, the organic silicon surfactant of 1.2 parts by weight, 1 parts by weight water
It is stirred；
(2) calcium carbonate, 3 parts of modified calcium carbonates and auxiliary agent of 12 parts by weight are added in mixture obtained in the first step, stirs
Mix that be mixed to get first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.2 parts by weight, 0.01 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 6.5:1；The high rebound polyethers is purchased from Guangzhou Wen Longhua
Work Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；It is described to connect
Branch polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is 3630 (hydroxyl value 24-28mgKOH/g, average functionalities
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The diisocyanate is toluene di-isocyanate(TDI)；The aliphatic dihydroxy alcohol is the third two
Alcohol；The preparation method of the modified calcium carbonate includes the following steps:
Deionized water ultrasonic disperse 45min, heating systems temperature will be added in a certain amount of nanometer calcium carbonate (200 nanometers)
To 75 DEG C, coupling agent (12wt% for accounting for nanometer calcium carbonate amount) then is added, is stirred to react 2 hours, is cooled to room temperature, filters,
Filter cake washing, drying are ground to obtain the final product.
The coupling agent is dodecyl methyl dimethoxysilane.
Embodiment 7A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, is included the following steps:
(1) at room temperature by high the rebound polyethers, 35 parts by weight graft polyethers, 4 parts by weight binary aliphatics of 100 parts by weight
Alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of 4 parts by weight, the organic silicon surfactant of 1.2 parts by weight, 1 parts by weight water
It is stirred；
(2) calcium carbonate, 3 parts of modified calcium carbonates and auxiliary agent of 12 parts by weight are added in mixture obtained in the first step, stirs
Mix that be mixed to get first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of 0.2 parts by weight, 0.01 parts by weight tricresyl phosphate
Butyl ester is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber vibration damping
Pad.
Weight ratio between the first component and second component is 6.5:1；The high rebound polyethers is purchased from Guangzhou Wen Longhua
Work Co., Ltd, the trade mark are EP-3600 (hydroxyl value 26-30mgKOH/g, average functionality 3, molecular weight 6000)；It is described to connect
Branch polyethers selects Jurong Ningwu new material limited liability company, and the trade mark is 3630 (hydroxyl value 24-28mgKOH/g, average functionalities
For 3)；The organic silicon surfactant is KH560；The calcium carbonate is 1200 mesh calcium carbonate, is had purchased from vertical up to ultra micro industry
Limit company；The auxiliary agent is by 0.2 part of melamine, 0.2 part of carbon black, 0.05 part of 3,2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls) benzene
- 5 chlorinated benzotriazole of base) and 0.05 part of tetramethylene β-(3,5- di-tert-butyl-hydroxy phenyl) propionate group
At；The catalyst is stannous octoate；The aliphatic dihydroxy alcohol is propylene glycol；The diisocyanate is toluene diisocynate
Ester；The preparation method of the modified calcium carbonate includes the following steps:
Deionized water ultrasonic disperse 45min, heating systems temperature will be added in a certain amount of nanometer calcium carbonate (200 nanometers)
To 75 DEG C, coupling agent (12wt% for accounting for nanometer calcium carbonate amount) then is added, is stirred to react 2 hours, is cooled to room temperature, filters,
Filter cake washing, drying are ground to obtain the final product.
The coupling agent is the mixing of dodecyl methyl dimethoxysilane and 3- mercaptopropyl trimethoxysilane, heavy
Amount ratio is 1:2.
Embodiment 8Disclose a kind of preparation method of railroad track liquid rubber cushion blocking, it is different from embodiment 1 it
It is in not comprising graft polyether.
Embodiment 9Disclose a kind of preparation method of railroad track liquid rubber cushion blocking, it is different from embodiment 7 it
It is in not comprising high-carbon polyethers.
Embodiment 10A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, it is different from embodiment 7
Place is not including quinhydrones-two (beta-hydroxyethyl) paracresol ether.
Embodiment 11A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, it is different from embodiment 7
Place is that the graft polyether is replaced that (viscosity is 800~1000mPas/25 DEG C, official by NJ-330N by the trade mark of the said firm
Energy degree is 3, and hydroxyl value is 34 ± 2).
Embodiment 12A kind of preparation method of railroad track liquid rubber cushion blocking is disclosed, it is different from embodiment 7
Place is that the organic silicon surfactant is replaced with dodecyl methyl dimethoxysilane.
Performance evaluation
1, tension test
According to National Standard of the People's Republic of China GB/T528-2009, " vulcanized rubber or thermoplastic elastomer tensile stress are answered
It is denaturalized the measurement of energy " tensile property test: environment temperature (25 ± 1) DEG C, relative humidity (60 is carried out to the embodiment in the application
± 2) %, dumbbell shape I type sample, test rate, 200mm/min.
2, springrate ratio is tested
Method under WJ-8 iron chair in resilient sleeper-bearing manufacture inspection specifications in appendix A and B carries out dynamic stiffness and quiet
Rigidity test calculates springrate ratio.
3, resistance to strong acid, resistance to highly basic, salt tolerant erosion performance
By the liquid rubber cushion blocking being prepared respectively in the 15wt% concentrated sulfuric acid, 100% calcium hydroxide, saturated sodium-chloride
It places 100 days, then takes out in aqueous solution, it is dry, it is etched degree with amplification sem observation cushion blocking surface, according to the tight of erosion
Weight degree comments 1~5 grade, wherein 5 grades of erosions are the most serious, surface is substantially completely corroded, and a large amount of lack occurs in gasket edge
Mouth and defect, 1 grade there is no erosion.
4, resistance to low temperature
In round metal bars after first and second components of cushion blocking are mixed coated in diameter 25mm, coating thickness 1mm, then
Placed one week in the environment of -100 DEG C, then take out observation cushion blocking whether occur cracking, embrittlement phenomena such as, according to cracking,
The seriousness of situations such as broken comments 1~3 grade, wherein 3 grades of Fragmentation Phenomena most serious, 1 grade best for stability.
5, high temperature resistance
It is mixed with the first and second component of cushion blocking to obtain colloid composition, which is placed on 60 degree of inclined surface, and
The inclined surface is placed and is heat-treated 2 hours in an oven, observation cushion blocking phenomena such as whether softening, trickle, record do not soften with
Characterization of the maximum temperature that do not trickle as high temperature resistance.
6, UV resistant is tested
GB/T 16422.3-2014 plastics laboratory light source exposure test method third portion: fluorescent ultraviolet lamp tests this
Apply for the resilient cushion UV resistance in embodiment.Cushion blocking UV resistant performance in the embodiment of the present invention 1~7 is fine, surpasses
Spend 100 years.
7, permanent deformation (%)
Permanent deformation test is carried out to the resilient cushion in the embodiment of the present application according to standard GB/T/T 10653.Test knot
Structure is as shown in the table.
1 performance test table of table
2 stability test table of table
Example above-mentioned is merely illustrative, and is used to explain the present invention some features of the method.Appended right is wanted
The range as wide as possible for being intended to require to be contemplated that is sought, and embodiments as presented herein is only according to all possible implementation
The explanation of the embodiment of the combined selection of example.Therefore, the purpose of applicant is that the attached claims are not illustrated this hair
The exemplary selectional restriction of bright feature.Some numberical ranges used also include sub- model in the claims
It encloses, the variation in these ranges should also be construed to be covered by the attached claims in the conceived case.
Claims (10)
1. a kind of railroad track preparation method of liquid rubber cushion blocking, which comprises the steps of:
(1) at room temperature by high rebound polyethers, (10~50) parts by weight graft polyether, (1~5) parts by weight fat of 100 parts by weight
Race's dihydric alcohol, (beta-hydroxyethyl) paracresol of quinhydrones-two ether of (1~5) parts by weight, (0.2~1.5) parts by weight organosilyl surface
Activating agent, (0~2) parts by weight water be stirred；
(2) calcium carbonate of (0~20) parts by weight and helping for (0.1~10) parts by weight are added in mixture obtained in the first step
Agent is stirred to obtain first component stand-by；
(3) at room temperature by the diisocyanate of 100 parts by weight, the catalyst of (0.1~0.3) parts by weight, (0.003~0.02) weight
The tributyl phosphate of amount part is stirred to obtain second component stand-by；
(4) the first component is mixed with the second component, is post-processed up to the railroad track liquid rubber cushion blocking.
2. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that the first group
Divide and the weight ratio of the second component is (5:1)~(10:1).
3. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that the fat
Race's dihydric alcohol is selected from one of ethylene glycol, propylene glycol, butanediol, pentanediol, hexylene glycol or a variety of；The aliphatic dihydroxy alcohol
Weight ratio with quinhydrones-two (beta-hydroxyethyl) the paracresol ether is 1:(0.8~1.2).
4. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that described high time
The hydroxyl value for playing polyethers is 26~36mgKOH/g.
5. the railroad track as claimed in claim 4 preparation method of liquid rubber cushion blocking, which is characterized in that described high time
Playing polyethers average functionality is 3, and weight average molecular weight is 5000~6000.
6. the railroad track as claimed in claim 5 preparation method of liquid rubber cushion blocking, which is characterized in that the grafting
The hydroxyl value of polyethers is 20-30mgKOH/g.
7. the railroad track as claimed in claim 6 preparation method of liquid rubber cushion blocking, which is characterized in that the grafting
The viscosity of polyethers is no more than 3500cps/25 DEG C.
8. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that the carbonic acid
The partial size of calcium is 1200~1300 mesh.
9. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that the auxiliary agent
Including antioxidant, ultraviolet absorber, colorant, fire retardant.
10. the railroad track as described in claim 1 preparation method of liquid rubber cushion blocking, which is characterized in that (4) step
Post-processing described in rapid includes the following steps: the film bag consistent and inner vacuum with base plate cavity laying size in track plates,
Then the material being mixed to get first component and second component, is injected into film bag by slip casting machine, stands solidification.
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| CN201910327242.4A CN109957090A (en) | 2019-04-23 | 2019-04-23 | A kind of preparation method of railroad track liquid rubber cushion blocking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110079261B (en) * | 2019-05-13 | 2021-04-06 | 张会仙 | Expansion joint filler for cast-in-place engineering and construction method thereof |
| CN111995727A (en) * | 2020-08-26 | 2020-11-27 | 王琴兰 | Railway ballast bed vibration damping and shock pad composite material |
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