CN107699122A - A kind of watersoluble closed dose of preparation method of railway elastic bar - Google Patents
A kind of watersoluble closed dose of preparation method of railway elastic bar Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two 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
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The present invention relates to sealer technical field, and in particular to a kind of watersoluble closed dose of preparation method of railway elastic bar, watersoluble closed dose of preparation method of the railway elastic bar, comprises the following steps：(1) first by PPG, isocyanates and Part I catalyst in atmosphere of inert gases, 3 5h are reacted at 60~80 DEG C；Then epoxy resin, Part II catalyst and chain extender are added, is continued in atmosphere of inert gases, 2 3h under 60~80 DEG C of reactions, obtains waterborne epoxy modified polyurethane；(2) after being well mixed waterborne epoxy modified polyurethane, graphene, silane coupler, inorganic filler and pigment in water, that is, railway elastic bar is obtained with watersoluble closed dose.The present invention is by synthesizing waterborne epoxy modified polyurethane base-material, the filler such as addition two-dimensional nano-graphene, improves the decay resistance and mechanical performance of paint film, and it is using water as decentralized medium, environment-friendly.
Description
Technical field
The present invention relates to sealer and its preparing technical field, and in particular to a kind of watersoluble closed dose of system of railway elastic bar
Preparation Method.
Background technology
Rail fastening is the part that connection rail and sleeper are allowed to be formed the section of track, is ensureing track stability, reliability side
Face plays an important role, and with the development of China Express Railway and heavy haul transport, rail fastening performance is further improved, bullet
Bar is the important component of rail fastening, it mainly using elastic deformation when stored energy play alleviate mechanical oscillation and
The effect of impact, the alternate stresses such as long-term, periodic bending, torsion are born under dynamic loading.
At home in existing railway elastic bar technology, typically using 60Si2MnA, 60Si2CrA spring steel as making railway
The material of spring, due to its exposure in atmosphere, corrosion phenomenon easily occurs, and be easily worn after long-term use.In order to anti-
Corrosion only occurs, one layer of sealer can be all applied on spring surface to form protecting film, improves the decay resistance of spring.It is conventional
Sealer have solvent-borne type and water-based two major class.At present, widely used sealer is mainly solvent type epoxy class on spring
Resin, after this kind of resin solidification, fragility is larger, easily causes mechanical damage, causes antiseptic property to reduce, and has in the curing process
Substantial amounts of VOC emission, bring serious problem of environmental pollution.On the basis of sealer combination property is improved, to adapt to ring
Guaranteed request, there is an urgent need to develop water-based spring sealer.
Watersoluble closed dose has been applied in galvanizing and hot-dip aluminizing zinc material, such as Publication No. CN104059412A China
Patent of invention provides a kind of preparation method of antirust sealer, and this method is included water, silane coupler, water-soluble silicic acid
Salt, accelerator, cilicon oxide filler and water-soluble film-forming resin are well mixed successively, comprising water-based wherein in water-soluble film-forming resin
Polyurethane resin.In addition, Publication No. CN102719121A Chinese invention patent discloses a kind of hybrid inorganic-organic silane
Metal water-based anticorrosive paint, using aqueous sol that multiple functions roll into a ball is contained as active ingredient, synthesis technique is simple, can be used for
Metal surface pre-treatment, but for the surface treatment of spring, a certain distance in terms of antiseptic property also be present.
The content of the invention
It is larger with sealer fragility for spring in the prior art, easily cause mechanical damage, cause antiseptic property reduce with
And, solidification when the performance deficiency such as VOC emission amount height, corrosion resistance is poor, and it is an object of the invention to provide a kind of railway elastic bar use
Watersoluble closed dose, it is environment-friendly, and has excellent decay resistance.
To achieve these goals, the present invention provides a kind of railway elastic bar watersoluble closed dose of preparation method, the iron
Road spring sealer is made up of following feedstock composition：PPG, isocyanates, catalyst, chain extender, epoxy resin,
Silane coupler, inorganic filler, graphene, pigment, auxiliary agent and water；
Wherein, the preparation method comprises the following steps：
(1) first by PPG, isocyanates and Part I catalyst in atmosphere of inert gases, at 60~80 DEG C
Lower reaction 3-5h；Then epoxy resin, Part II catalyst and chain extender are added, is continued in atmosphere of inert gases, 60
The lower 2-3h of~80 DEG C of reactions, obtains waterborne epoxy modified polyurethane；
(2) waterborne epoxy modified polyurethane, graphene, silane coupler, inorganic filler and pigment are mixed in water
After even, that is, railway elastic bar is obtained with watersoluble closed dose.
Pass through above-mentioned technical proposal, the present invention have following technique effect：
PPG and isocyanates are reacted generation base polyurethane prepolymer for use as by the present invention in the presence of a catalyst first, then
Base polyurethane prepolymer for use as and epoxy resin are reacted, generate waterborne epoxy modified polyurethane, the waterborne epoxy modified poly- ammonia of water
Ester can not only improve the decay resistance and mechanical performance of sealer, additionally it is possible to the mechanical strength and adhesive force of paint film are improved,
And it is using water as decentralized medium, easy for construction, VOC is low, has the advantages that nontoxic, non-ignitable, coating excellent storage stability.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The present invention provides a kind of railway elastic bar with watersoluble closed dose, on the basis of the parts by weight of PPG 100, the iron
Road spring is included with watersoluble closed dose：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, the weight of catalyst 3~8
Measure part, the parts by weight of chain extender 2~10, the parts by weight of epoxy resin 20~80, the parts by weight of silane coupler 3~5, inorganic filler 5~
25 parts by weight, the parts by weight of graphene 0.1~0.5, the parts by weight of pigment 5~10, the parts by weight of auxiliary agent 1~3 and the weight of water 200~500
Part.
In the case of, according to the invention it is preferred to, on the basis of the parts by weight of PPG 100, the railway elastic bar is with water-based
Sealer includes：The parts by weight of PPG 100, the parts by weight of isocyanates 50~100, the parts by weight of catalyst 3~8, chain extender 3
~10 parts by weight, the parts by weight of epoxy resin 30~60, the parts by weight of silane coupler 3~5, the parts by weight of inorganic filler 10~20, stone
The black parts by weight of alkene 0.1~0.5, the parts by weight of pigment 5~10, the parts by weight of auxiliary agent 1~3 and the parts by weight of water 200~500.
The present invention also provides a kind of railway elastic bar watersoluble closed dose of preparation method, comprises the following steps：
(1) first by PPG, isocyanates and Part I catalyst in atmosphere of inert gases, at 60~80 DEG C
Lower reaction 3-5h；Then epoxy resin, Part II catalyst and chain extender are added, is continued in atmosphere of inert gases, 60
The lower 2-3h of~80 DEG C of reactions, obtains waterborne epoxy modified polyurethane；
(2) waterborne epoxy modified polyurethane, graphene, silane coupler, inorganic filler and pigment are mixed in water
After even, that is, railway elastic bar is obtained with watersoluble closed dose.
In the present invention, PPG and isocyanates are reacted into generation polyurethane prepolymer in the presence of a catalyst first
Body, then base polyurethane prepolymer for use as and epoxy resin are reacted, waterborne epoxy modified polyurethane is generated, it is waterborne epoxy modified poly-
Urethane can not only improve the decay resistance and mechanical performance of sealer, additionally it is possible to improve mechanical strength and the attachment of paint film
Power, and it is using water as decentralized medium, and easy for construction, VOC is low, has the advantages that nontoxic, non-ignitable, coating excellent storage stability.
By adding graphene in the reaction system of step (2), make the graphene dispersion of two dimension in sealer system,
After sealer film-forming, graphene can form layer protecting film on sealer, further improve the corrosion-resistant of paint film
Performance and mechanical performance, so as to reach the effect for improving film layer service life.
In the case of, according to the invention it is preferred to, the weight ratio of the PPG, isocyanates and epoxy resin is 1：
(0.5~1)：(0.3~0.6).
In the case of, according to the invention it is preferred to, the epoxy resin is selected from bisphenol A type epoxy resin, bisphenol f type epoxy resin
Or cycloaliphatc glycidyl ether type epoxy；It is further preferred that the epoxide number of the epoxy resin is 0.18~0.54eq/
100g。
In the case of, according to the invention it is preferred to, the PPG is selected from polyoxypropyleneglycol, polytetrahydrofuran diol
With tetrahydrofuran-propylene oxide copolymer glycols, polyadipate hexylene glycol ester, poly adipate succinic acid ester, polycaprolactone glycol, poly-
At least one of carbonate diol.
In the case of, according to the invention it is preferred to, it is different that the isocyanates is selected from hexamethylene diisocyanate, isophorone two
At least one of cyanate, toluene di-isocyanate(TDI), methyl diphenylene diisocyanate.
According to the present invention, catalyst can be catalyzed PPG and isocyanates reaction, generate polyurethane, preferable case
Under, the catalyst is selected from stannous octoate and/or dibutyl tin laurate.
In the case of, according to the invention it is preferred to, the chain extender is selected from the material of small molecule amine or small molecule alcohol, such as 1,
4 butanediols, ethylene glycol, diethylene glycol (DEG), propane diols, Isosorbide-5-Nitrae-cyclohexanediol, hydrogenated bisphenol A, 4,4'- diaminourea -3,3'- dichloros
At least one of methane.
According to the present invention, silane coupler can be such that watersoluble modified polyurethane is reacted with water-soluble silicate, preferable case
Under, the silane coupler is selected from γ-methacryloxypropyl trimethoxy silane, γ-(2,3- the third oxygen of epoxy) propyl group
At least one of trimethoxy silane and gamma-aminopropyl-triethoxy-silane.
In the case of, according to the invention it is preferred to, the inorganic filler is silica and/or aluminum oxide, it is further preferred that
The particle diameter of the inorganic filler is 20~25 μm.
Under the conditions of, according to the invention it is preferred to, the graphene is multi-layer graphene.
Under the conditions of, according to the invention it is preferred to, pigment is acetylene and/or carbon black.
According to the present invention, in order to further optimize the performance of sealer, under preferable case, railway elastic bar is with watersoluble closed dose
In also contain auxiliary agent, the auxiliary agent is selected from defoamer and/or levelling agent.
In the case of, according to the invention it is preferred to, it is sweet that the defoamer is selected from dimethyl silicone polymer, polyoxypropylene ethylene oxide
At least one of oily ether, fluorosilicone, ethylene glycol siloxanes.
In the case of, according to the invention it is preferred to, the levelling agent is silicone levelling agent, such as can be polyether-modified silicon
Oil.
The present invention will be described in detail by way of examples below.
Multi-layer graphene is purchased from the rich science and technology of Suzhou carbon, model technical grade multi-layer graphene in following examples.
Embodiment 1
(1) by 100 parts by weight polyoxypropyleneglycols, 75 parts by weight hexamethylene diisocyanates and 3 parts by weight of octanoic acid
Stannous reacts 4h in argon atmosphere at 75 DEG C；Then adding 50 parts by weight of bisphenol F types epoxy resin, (epoxide number is
0.32eq/100), 2 parts by weight of octanoic acid stannous and 8 parts by weight of propylene glycol, continue in argon atmosphere, the 2.5h under 75 DEG C of reactions,
Obtain waterborne epoxy modified polyurethane；
(2) by above-mentioned waterborne epoxy modified polyurethane, 0.8 parts by weight multi-layer graphene, 15 parts by weight of alumina (average grain
Footpath is 25 μm), 1 parts by weight polyether modified silicon oil, 2 parts by weight polyoxypropylene ethylene oxide glycerin ethers, 6 parts by weight of carbon black per and 4 weights
After amount part gamma-aminopropyl-triethoxy-silane is well mixed in 300 parts by weight water, at 55 DEG C, 1.5h is incubated, that is, obtains iron
Road spring is with watersoluble closed dose；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring A1, its performance such as institute of table 1
Show.
Embodiment 2
(1) it is 100 parts by weight polyadipate hexylene glycol esters, 50 parts by weight hexamethylene diisocyanates and 2 parts by weight are pungent
Sour stannous reacts 4h in argon gas at 60 DEG C；Then 30 parts by weight of bisphenol F types epoxy resin (epoxide number 0.43eq/ are added
100), 1 parts by weight of octanoic acid stannous and 3 parts by weight of propylene glycol, continue in argon atmosphere, the 3h under 60 DEG C of reactions, obtain water-based
Epoxy modified polyurethane；
(2) by waterborne epoxy modified polyurethane, 0.8 parts by weight of graphite alkene, 10 parts by weight of silica (average grain diameter 25
μm), 1.5 parts by weight polyether modified silicon oils, 1.5 parts by weight polyoxypropylene ethylene oxide glycerin ethers, 8 parts by weight of carbon black per and 3.5 weights
After amount part gamma-aminopropyl-triethoxy-silane is well mixed in 200 parts by weight water, at 50 DEG C, 2h is incubated, that is, obtains railway
Spring is with watersoluble closed dose；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring A2, its performance such as institute of table 1
Show.
Embodiment 3
(1) it is 100 parts by weight polyoxypropyleneglycols, 100 parts by weight IPDIs and 4.4 parts by weight are pungent
Sour stannous reacts 4h in argon atmosphere at 80 DEG C；Then adding 60 parts by weight of bisphenol F types epoxy resin, (epoxide number is
0.25eq/100), 3.6 parts by weight of octanoic acid stannous and 10 parts by weight Isosorbide-5-Nitrae-cyclohexanediol, continue in argon atmosphere, anti-at 80 DEG C
2h should be descended, obtains waterborne epoxy modified polyurethane；
(2) by waterborne epoxy modified polyurethane, 0.5 parts by weight multi-layer graphene, 20 parts by weight of silica (average grain diameters
For 20 μm), 2 parts by weight polyether modified silicon oils, 1 parts by weight polyoxypropylene ethylene oxide glycerin ether, 9 parts by weight of carbon black per and 4.5 weights
After amount part gamma-aminopropyl-triethoxy-silane is well mixed in 500 parts by weight water, at 50 DEG C, 3h is incubated, that is, obtains railway
Spring is with watersoluble closed dose；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring A3, its performance such as institute of table 1
Show.
Embodiment 4
(1) it is 100 parts by weight polyadipate hexylene glycol esters, 40 parts by weight IPDIs and 3 parts by weight are pungent
Sour stannous reacts 3h in argon atmosphere at 80 DEG C；Then adding 20 parts by weight of bisphenol A based epoxy resins, (epoxide number is
0.18eq/100), 1 parts by weight of octanoic acid stannous and 2 parts by weight ethylene glycol, continue in argon atmosphere, the 2.5h under 80 DEG C of reactions,
Obtain waterborne epoxy modified polyurethane；
(2) by waterborne epoxy modified polyurethane, 0.6 parts by weight multi-layer graphene, 5 parts by weight of alumina, (average grain diameter is
20 μm), 2 parts by weight polyether modified silicon oils, 1 parts by weight polyoxypropylene ethylene oxide glycerin ether, 5 parts by weight of carbon black per and 3 parts by weight
After gamma-aminopropyl-triethoxy-silane is well mixed in 500 parts by weight water, at 40 DEG C, 3h is incubated, that is, obtains railway elastic bar
With watersoluble closed dose；
Above-mentioned sealer is sprayed at spring surface, then dries 2h at 135 DEG C, spring A4 is obtained, its performance such as table 1
It is shown.
Embodiment 5
(1) it is 100 parts by weight polyadipate hexylene glycol esters, 120 parts by weight IPDIs and 4 parts by weight are pungent
Sour stannous reacts 5h in argon atmosphere at 75 DEG C；Then adding 80 parts by weight of bisphenol A based epoxy resins, (epoxide number is
0.54eq/100), 2 parts by weight Part II stannous octoates and 10 parts by weight ethylene glycol, continue in argon atmosphere, anti-at 75 DEG C
3h should be descended, obtains waterborne epoxy modified polyurethane；
(2) by waterborne epoxy modified polyurethane, 1 parts by weight of graphite alkene, 25 parts by weight of silica, (average grain diameter is 25 μ
M), 1 parts by weight polyether modified silicon oil, 2 parts by weight polyoxypropylene ethylene oxide glycerin ethers, 10 parts by weight of carbon black per and 5 parts by weight γ-
After aminopropyl triethoxysilane is well mixed in 200 parts by weight water, at 60 DEG C, 1h is incubated, that is, obtains railway elastic bar use
Watersoluble closed dose；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring A5, its performance such as institute of table 1
Show.
Comparative example 1
According to the method for embodiment 1, unlike, using not adding epoxy resin in the preparation process of polyurethane；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring B1, its performance such as institute of table 1
Show.
Comparative example 2
According to the method for embodiment 1, the difference is that, do not add graphene；
Above-mentioned sealer is sprayed at spring surface, then 2h is dried at 135 DEG C, obtains spring B2, its performance such as institute of table 1
Show.
Test case：
By the hardness of each spring in GB/T6739-1966 method testing example 1~5 and comparative example 1~2；
By the pliability of each spring in GB/T1731-1993 method testing example 1~5 and comparative example 1~2；
By the adhesive force of each spring in GB/T9286-1998 method testing example 1~5 and comparative example 1~2；
By the salt spray resistance of each spring in GB/T10125-2012 method testing example 1~5 and comparative example 1~2.
Table 1：The performance test table of each spring in embodiment 1~5 and comparative example 1~2
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. watersoluble closed dose of preparation method of a kind of railway elastic bar, it is characterised in that the railway elastic bar sealer is by following
Feedstock composition is made：PPG, isocyanates, catalyst, chain extender, epoxy resin, silane coupler, inorganic fill out
Material, graphene, pigment, auxiliary agent and water；
Wherein, the preparation method comprises the following steps：
(1) it is anti-at 60~80 DEG C first by PPG, isocyanates and Part I catalyst in atmosphere of inert gases
Answer 3-5h；Then epoxy resin, Part II catalyst and chain extender are added, is continued in atmosphere of inert gases, 60~80
DEG C lower 2-3h of reaction, obtains waterborne epoxy modified polyurethane；
(2) after waterborne epoxy modified polyurethane, graphene, silane coupler, inorganic filler and pigment being well mixed in water,
Railway elastic bar is obtained with watersoluble closed dose.
2. preparation method according to claim 1, wherein, on the basis of the parts by weight of PPG 100, the railway bullet
Bar is included with watersoluble closed dose：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, the weight of catalyst 3~8
Part, the parts by weight of chain extender 2~10, the parts by weight of epoxy resin 20~80, the parts by weight of silane coupler 3~5, inorganic filler 5~25
Parts by weight, the parts by weight of graphene 0.5~1, the parts by weight of pigment 5~10, the parts by weight of auxiliary agent 1~3 and the parts by weight of water 200~500.
3. preparation method according to claim 1, wherein, on the basis of the parts by weight of PPG 100, the railway bullet
Bar is included with watersoluble closed dose：The parts by weight of PPG 100, the parts by weight of isocyanates 50~100, the weight of catalyst 3~8
Part, the parts by weight of chain extender 3~10, the parts by weight of epoxy resin 30~60, the parts by weight of silane coupler 3~5, inorganic filler 10~20
Parts by weight, the parts by weight of graphene 0.1~0.5, the parts by weight of pigment 5~10, the parts by weight of auxiliary agent 1~3 and the parts by weight of water 200~500.
4. preparation method according to claim 1, wherein, the weight of the Part I catalyst and Part II catalyst
Amount is than being 1：(0.5~0.8).
5. preparation method according to claim 1, wherein, the weight of the PPG, isocyanates and epoxy resin
Amount is than being 1：(0.5~1)：(0.3~0.8).
6. preparation method according to claim 1, wherein, the epoxy resin is selected from bisphenol A type epoxy resin, Bisphenol F
At least one of type epoxy resin and cycloaliphatc glycidyl ether type epoxy；
Wherein, the epoxide number of the epoxy resin is 0.18~0.54eq/100.
7. preparation method according to claim 1, wherein, the PPG is selected from polyoxypropyleneglycol, poly- four
Hydrogen furans glycol and tetrahydrofuran-propylene oxide copolymer glycols, polyadipate hexylene glycol ester, poly adipate succinic acid ester, gather oneself
At least one of interior esterdiol, PCDL；
The isocyanates is selected from hexamethylene diisocyanate, IPDI, toluene di-isocyanate(TDI), hexichol
At least one of dicyclohexylmethane diisocyanate.
8. preparation method according to claim 1, wherein, the inorganic filler is silica and/or aluminum oxide；
The particle diameter of the inorganic filler is 20~25 μm.
9. railway elastic bar according to claim 1 is with watersoluble closed dose, wherein, the graphene is multi-layer graphene；With/
Or
The pigment is acetylene and/or carbon black.
10. railway elastic bar according to claim 1 is with watersoluble closed dose, wherein, the auxiliary agent is selected from defoamer and/or stream
Flat agent；
Wherein, the defoamer is selected from dimethyl silicone polymer, polyoxypropylene ethylene oxide glycerin ether, fluorosilicone, ethylene glycol
At least one of siloxanes；And/or
The levelling agent is silicone levelling agent.
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| CN108385138A (en) * | 2018-03-19 | 2018-08-10 | 广州超邦化工有限公司 | A kind of preparation method for the metal surface coating structure being applicable under Yu Haiyang strong corrosive environment |
| CN109135528A (en) * | 2018-08-17 | 2019-01-04 | 佛山市森昂生物科技有限公司 | A kind of waterborne anti-rust sealer |
| CN109517514A (en) * | 2018-10-22 | 2019-03-26 | 天津昌海新材料科技发展有限公司 | Modified puncture resistant heavy antisepsis sprayed on material of a kind of graphene and preparation method thereof |
| CN109608610A (en) * | 2018-12-13 | 2019-04-12 | 合众（佛山）化工有限公司 | A kind of graphene modified aqueous polyurethane-epoxy resin and preparation method thereof |
| CN111074263A (en) * | 2019-12-23 | 2020-04-28 | 三达奥克化学股份有限公司 | Environment-friendly sealant used after phosphorization of wear-resistant rail transit parts and preparation method thereof |
| CN112724815A (en) * | 2020-12-28 | 2021-04-30 | 江苏鑫能材料科技有限公司 | Cold zinc-spraying ultrathin sealant and construction method thereof |
| CN113652159A (en) * | 2021-07-29 | 2021-11-16 | 南通科顺建筑新材料有限公司 | Epoxy resin modified polyurethane waterproof coating and preparation method and application thereof |
| CN114989709A (en) * | 2022-06-17 | 2022-09-02 | 中车株洲车辆有限公司 | Water-based precoated primer, coating and product with coating |
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| CN109135528A (en) * | 2018-08-17 | 2019-01-04 | 佛山市森昂生物科技有限公司 | A kind of waterborne anti-rust sealer |
| CN109517514A (en) * | 2018-10-22 | 2019-03-26 | 天津昌海新材料科技发展有限公司 | Modified puncture resistant heavy antisepsis sprayed on material of a kind of graphene and preparation method thereof |
| CN109517514B (en) * | 2018-10-22 | 2021-02-05 | 天津昌海新材料科技发展有限公司 | Graphene modified puncture-resistant heavy-duty anticorrosive spraying material and preparation method thereof |
| CN109608610A (en) * | 2018-12-13 | 2019-04-12 | 合众（佛山）化工有限公司 | A kind of graphene modified aqueous polyurethane-epoxy resin and preparation method thereof |
| CN111074263A (en) * | 2019-12-23 | 2020-04-28 | 三达奥克化学股份有限公司 | Environment-friendly sealant used after phosphorization of wear-resistant rail transit parts and preparation method thereof |
| CN111074263B (en) * | 2019-12-23 | 2022-02-01 | 三达奥克化学股份有限公司 | Environment-friendly sealant used after phosphorization of wear-resistant rail transit parts and preparation method thereof |
| CN112724815A (en) * | 2020-12-28 | 2021-04-30 | 江苏鑫能材料科技有限公司 | Cold zinc-spraying ultrathin sealant and construction method thereof |
| CN113652159A (en) * | 2021-07-29 | 2021-11-16 | 南通科顺建筑新材料有限公司 | Epoxy resin modified polyurethane waterproof coating and preparation method and application thereof |
| CN114989709A (en) * | 2022-06-17 | 2022-09-02 | 中车株洲车辆有限公司 | Water-based precoated primer, coating and product with coating |
| CN114989709B (en) * | 2022-06-17 | 2023-10-24 | 中车株洲车辆有限公司 | Water-based precoating primer, coating and product with coating |
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Application publication date: 20180216 |