CN114621660A - Railway ballast track bridge deck polyurethane waterproof layer material and preparation method thereof - Google Patents

Railway ballast track bridge deck polyurethane waterproof layer material and preparation method thereof Download PDF

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Publication number
CN114621660A
CN114621660A CN202210296877.4A CN202210296877A CN114621660A CN 114621660 A CN114621660 A CN 114621660A CN 202210296877 A CN202210296877 A CN 202210296877A CN 114621660 A CN114621660 A CN 114621660A
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parts
waterproof layer
polycarbonate polyol
ballast track
layer material
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CN114621660B (en
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张万明
刘明圣
邱家浩
段会斌
刘玮
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Qingdao Hailiwei Polymer Technology Co ltd
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Qingdao Hailiwei Polymer Technology Co ltd
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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3234—Polyamines cycloaliphatic
    • 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
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/44—Polycarbonates
    • 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
    • C08G18/6633—Compounds of group C08G18/42
    • C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6648—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6651—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
    • C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
    • 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
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
    • E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

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  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
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  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a high-performance polyurethane waterproof layer material for a railway ballast track bridge deck, which consists of 100 parts of a material A and 92-99 parts of a material B in parts by weight, wherein: the material A comprises the following materials in parts by weight: 40.5-53.7 parts of polycarbonate polyol, 25-31 parts of amine compound, 19-25 parts of plasticizer, 1-2 parts of water removing agent, 0.8-1.2 parts of coupling agent and 0.3-0.5 part of catalyst; the material B consists of the following materials in parts by weight: 63-69 parts of isocyanate and 31-37 parts of polycarbonate polyol. The waterproof layer material disclosed by the invention has excellent physical and mechanical properties, the tensile strength is more than or equal to 45Mpa, the elongation at break is more than or equal to 500%, and meanwhile, the waterproof layer material has excellent hydrolysis resistance, low temperature resistance and weather resistance, and can meet the use requirements of special working conditions of influence factors such as large-amplitude transport capacity vibration and the like generated by the operation of heavy-duty vehicles in the use process.

Description

Railway ballast track bridge deck polyurethane waterproof layer material and preparation method thereof
Technical Field
The invention relates to the field of waterproof layer materials, in particular to a polyurethane waterproof layer material for a railway ballast track bridge deck and a preparation method thereof.
Background
The waterproof of the concrete bridge deck of the railway bridge is different from the waterproof of roofs and ground of common buildings and the waterproof of common tunnels, particularly the operation of heavy-duty vehicles in the use process needs to be considered for the waterproof of the bridge deck of the ballast track bridge, and the fatigue resistance, the ageing resistance and the chemical corrosion resistance of the material are influenced by the large-amplitude transport vibration generated when the trains run in the use process of the bridge. Therefore, waterproofing of concrete deck of railway bridges places higher demands on the waterproofing material, and it is desirable that the material has: high strength, large elongation at break, good fatigue resistance of the product, high cohesive strength, excellent temperature change resistance, aging resistance and corrosion resistance, convenient construction and the like.
The existing ballast track waterproof layer is mainly made of high polymer modified asphalt, polyurea waterproof coating, polyurethane waterproof layer and the like. The modified asphalt has good waterproof effect, but has poor mechanical property and poor elasticity; the polyurea waterproof coating is convenient to construct and good in mechanical property, but is high in activity, poor in infiltration effect with a base layer and easy to bulge and peel; the mechanical properties of the conventional polyurethane waterproof layer coating are relatively low, such as the specified tensile strength of more than 6.0MPa and the elongation at break of more than 450% in temporary technical conditions (revisions) of a waterproof layer of a concrete bridge deck of a passenger dedicated line bridge, and the coating is constructed in a rolling brush mode, so that the uniformity is poor and the construction period is long.
Therefore, a novel waterproof layer material for a railway ballast track bridge deck is needed, and the problems can be solved.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a railway ballast track bridge deck waterproof layer material.
According to the first aspect of the invention, the invention provides a high-performance polyurethane waterproof layer material for a railway ballast track bridge deck, which consists of 100 parts of a material A and 92-99 parts of a material B in parts by mass, wherein:
the material A comprises the following materials in parts by weight: 40.5-53.7 parts of polycarbonate polyol, 25-31 parts of amine compound, 19-25 parts of plasticizer, 1-2 parts of water removing agent, 0.8-1.2 parts of coupling agent and 0.3-0.5 part of catalyst;
the material B consists of the following materials in parts by weight: 63-69 parts of isocyanate and 31-37 parts of polycarbonate polyol.
Preferably, the material consists of 100 parts by mass of a material A and 95 parts by mass of a material B, wherein:
the material A comprises the following materials in parts by weight: 46.1 parts of polycarbonate polyol, 28 parts of amine compound, 23 parts of plasticizer, 1.5 parts of water removing agent, 1.0 part of coupling agent and 0.4 part of catalyst;
the material B consists of the following materials in parts by mass: 66 parts of isocyanate and 34 parts of polycarbonate polyol.
Preferably, the molecular weight of the polycarbonate polyol is 3000, and the polycarbonate polyol is polypropylene carbonate glycol.
Preferably, the amine compound is 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane;
the plasticizer is tri (2-ethylhexyl) phosphate;
the water remover is an oxazolidine water remover;
the coupling agent is KH-560;
the catalyst consists of an organic zinc catalyst and an organic bismuth catalyst;
the isocyanate is HDI trimer;
according to a second aspect of the invention, the preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck is provided, and the preparation method comprises the following steps:
s1: preparing a material A, namely dehydrating polycarbonate polyol to the water content of below 0.05 percent under the conditions of 105 +/-10 ℃ and-0.095 MPa, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain the material A;
preparing a material B, namely adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain the material B;
s2: and (3) putting the material A and the material B prepared in the step S1 in an environment with the temperature of 20-50 ℃, and mixing the materials according to the mass ratio of 100: 92-99 mixing.
According to a third aspect of the invention, the method for preparing the railway ballast track bridge deck waterproof layer by using the preparation method is provided, the temperature of the prepared material A and the temperature of the prepared material B are controlled to be 20-50 ℃, and the weight ratio of the prepared material A to the prepared material B is 100: 92-99, uniformly mixing, constructing to the surface of the base layer, and curing at normal temperature for 7 days.
According to one embodiment of the disclosure, the waterproof layer material disclosed by the invention has excellent physical and mechanical properties, the tensile strength is more than or equal to 45Mpa, the elongation at break is more than or equal to 500%, and meanwhile, the waterproof layer material has excellent hydrolysis resistance, low temperature resistance and weather resistance, and can meet the use requirements of special working conditions of influence factors such as large-amplitude transport capacity vibration and the like generated by the operation of a heavy-duty vehicle in the use process.
The waterproof layer material adopts the polypropylene carbonate glycol, has the hydrolysis resistance of polyether polyol and the high physical and mechanical properties of polyester polyol, and has excellent weather resistance, hydrolysis resistance and wear resistance.
According to the waterproof layer material, the material A adopts an amine compound 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane, contains a large amount of-NH 2, has a reaction rate with the polyurethane prepolymer which is far greater than that of water and the polyurethane prepolymer, has low moisture sensitivity, prevents bubbles from being generated, and simultaneously improves the heat resistance, the weather resistance and the wear resistance of the waterproof layer. Meanwhile, the amine compound is aliphatic diamine and does not contain benzene ring, so that the phenomenon that the product turns yellow due to the fact that the amine compound is irradiated by ultraviolet light to form a quinoid structure is avoided.
The waterproof layer material of the invention adopts HDI tripolymer as isocyanate, is liquid at normal temperature, is different from other tripolymers which are solid at normal temperature, is convenient to use, has the characteristics of low viscosity, high light resistance, good toughness and adhesion and the like, and has superior light stability and weather resistance compared with aromatic diisocyanate such as TDI and MDI.
In the waterproof layer material, the plasticizer adopts tris (2-ethylhexyl) phosphate, so that the waterproof layer material has excellent low temperature resistance and weather resistance, has a certain flame retardant effect due to phosphorus, reduces the viscosity of liquid materials, and increases the toughness of products.
According to the waterproof layer material, the water removal agent adopts the oxazolidine water removal agent, so that the water in the liquid material and the moisture in the environment can be effectively removed, bubbles and pinholes can be eliminated, the distinctness of image of the coating can be improved, the adhesion can be improved, and the bi-component coating can be protected from being influenced by the moisture when applied to a wet substrate or a wet environment.
According to the waterproof layer material, the KH-560, 3-glycidoxypropyltrimethoxysilane is used as the coupling agent, so that the physical and mechanical properties and the water resistance of the waterproof layer can be greatly enhanced, and the adhesion of the waterproof layer is improved.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
Example 1
The high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway in the embodiment comprises 100 parts of material A and 92-99 parts of material B by mass, wherein,
the material A consists of the following materials in parts by weight:
40.5-53.7 parts of polycarbonate polyol, 25-31 parts of amine compound, 19-25 parts of plasticizer, 1-2 parts of water removing agent, 0.8-1.2 parts of coupling agent and 0.3-0.5 part of catalyst;
the material B consists of the following materials in parts by weight:
63-69 parts of isocyanate and 31-37 parts of polycarbonate polyol.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck sequentially comprises the following steps of:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and mixing the materials according to the mass ratio of 100: and 92-99, and mixing uniformly to finish the preparation.
In addition, when the high-performance polyurethane waterproof material of the embodiment is prepared, other various additives such as an antioxidant, a pigment, a filler and the like can be added according to needs. The kind of the antioxidant, the pigment and the filler is not particularly limited in this embodiment, and those skilled in the art can determine the specific kind and the amount to be used according to the needs.
The high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the embodiment can be applied to preparation of a railway ballast track bridge deck waterproof layer, and the method for preparing the railway ballast track bridge deck waterproof layer comprises the following steps: controlling the temperature of the prepared material A and the material B at 20-50 ℃, and then mixing the materials according to the mass ratio of 100: and 92-99, uniformly mixing, constructing to the surface of the base layer, and curing at normal temperature for 7 days to achieve the using effect.
Example 2
The ballast track bridge deck high-performance polyurethane waterproof layer material for the railway in the embodiment is composed of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
53.7 parts of polypropylene carbonate glycol with number average molecular weight of 3000
25 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexyl methane
19 parts of tris (2-ethylhexyl) phosphate
1.0 part of oxazolidine water remover
KH-5600.8 parts
0.2 portion of zinc isooctanoate
0.3 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 63 parts
37 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:92 to obtain the high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the embodiment sequentially comprises the following steps of:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:92, mixing uniformly.
Example 3
The ballast track bridge deck high-performance polyurethane waterproof layer material for the railway in the embodiment is composed of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
40.5 parts of polypropylene carbonate glycol with number average molecular weight of 3000
31 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
25 parts of tris (2-ethylhexyl) phosphate
2 parts of oxazolidine water remover
KH-5601.2 parts
0.1 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
69 parts of HDI trimer
31 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:99 to obtain the high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the embodiment sequentially comprises the following steps of:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:99, mixing uniformly.
Example 4
The high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the embodiment is composed of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
46.1 parts of polypropylene carbonate glycol with number average molecular weight of 3000
28 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
Phosphoric acid tri (2-ethylhexyl) ester 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 66 parts
34 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:95 to obtain the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck.
The preparation method of the high-performance polyurethane waterproof layer material for the bridge deck of the railway ballast track in the embodiment sequentially comprises the following steps:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water scavenger, a coupling agent and a catalyst, stirring uniformly, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:95 mixing uniformly.
Comparative example 1
The railway ballast track bridge deck high-performance polyurethane waterproof layer material in the comparative example consists of a material A and a material B, wherein: the material A comprises the following materials in parts by mass:
46.1 parts of polyoxypropylene diol having number average molecular weight of 3000
28 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
Phosphoric acid tris (2-ethylhexyl) ester 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 part of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 66 parts
34 parts of polyoxypropylene diol having number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:95 to obtain the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the comparative example sequentially comprises the following steps:
s1: preparation of material A: dehydrating polyether polyol at 105 + -10 deg.C and-0.095 MPa to water content below 0.05%, adding amine compound, plasticizer, water scavenger, coupling agent and catalyst, stirring, and filtering to remove impurities to obtain material A;
preparation of material B: adding polyether polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:95 mixing uniformly.
Comparative example 2
The railway ballast track bridge deck high-performance polyurethane waterproof layer material in the comparative example consists of a material A and a material B, wherein: the material A comprises the following materials in parts by mass:
46.1 parts of polyethylene glycol adipate with number average molecular weight of 3000
28 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
Phosphoric acid tri (2-ethylhexyl) ester 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 66 parts
34 parts of polyethylene glycol adipate with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:95 to obtain the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the comparative example sequentially comprises the following steps:
s1: preparation of material A: dehydrating polyester polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water scavenger, a coupling agent and a catalyst, stirring uniformly, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polyester polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:95 mixing uniformly.
Comparative example 3
The railway ballast track bridge deck high-performance polyurethane waterproof layer material in the comparative example consists of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
46.1 parts of polypropylene carbonate glycol with number average molecular weight of 3000
28 parts of 3, 3 '-dichloro-4, 4' -diphenylmethanediamine
Phosphoric acid tri (2-ethylhexyl) ester 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 66 parts
34 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:87 to obtain the high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the comparative example sequentially comprises the following steps:
s1: preparation of material A: heating polycarbonate polyol to 105 +/-10 ℃, adding 3, 3 '-dichloro-4, 4' -diphenylmethane diamine, stirring until the mixture is completely melted, then dehydrating to the water content of less than 0.05 percent under the conditions of 105 +/-10 ℃ and-0.095 MPa, adding a plasticizer, a water removing agent, a coupling agent and a catalyst, stirring uniformly, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:87 and mixing them uniformly.
Comparative example 4
The railway ballast track bridge deck high-performance polyurethane waterproof layer material in the comparative example consists of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
46.1 parts of polypropylene carbonate glycol with number average molecular weight of 3000
28 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
Phosphoric acid tris (2-ethylhexyl) ester 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
TDI 66 parts of toluene diisocyanate
34 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:42 to obtain the high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the comparative example sequentially comprises the following steps:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:42 are mixed uniformly.
Comparative example 5
The railway ballast track bridge deck high-performance polyurethane waterproof layer material in the comparative example consists of a material A and a material B, wherein: the material A consists of the following materials in parts by weight:
46.1 parts of polypropylene carbonate glycol with number average molecular weight of 3000
28 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane
Dioctyl phthalate 23 parts
1.5 parts of oxazolidine water remover
KH-5601.0 parts
0.2 portion of zinc isooctanoate
0.2 portion of bismuth isooctanoate
The material B consists of the following materials in parts by mass:
HDI trimer 66 parts
34 parts of polypropylene carbonate glycol with number average molecular weight of 3000
And mixing the material A and the material B according to the mass part ratio of 100:95 to obtain the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck.
The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge deck in the comparative example sequentially comprises the following steps:
s1: preparation of material A: dehydrating polycarbonate polyol at 105 +/-10 ℃ and-0.095 MPa until the water content is below 0.05%, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain a material A;
preparation of material B: adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain a material B;
s2: controlling the temperature of the material A and the material B prepared in the step S1 to be 20-50 ℃, and then mixing the materials according to the mass ratio of 100:95 mixing uniformly.
Comparative example 6
Putting 100kg of trifunctional polycarbonate 330N (hydroxyl value 36), 50kg of difunctional polycarbonate 220 (hydroxyl value 56) and 50kg of diaminodiphenyl methane chloride crosslinking agent into a reaction kettle, stirring and heating to 110-120 ℃, and maintaining for 0.5 hour; then adding 15kg of 400-mesh wollastonite filler, 5kg of 200-mesh calcium oxide filler, 180kg of 600-mesh calcium carbonate filler and 85kg of chlorinated paraffin 42, stirring, mixing and dehydrating under vacuum at 110-120 ℃ and-0.09-0.10 MPa for 2 hours, cooling to 60 ℃, adding 0.4kg of silane defoamer, grinding by a colloid mill, discharging, and packaging to obtain the component A.
100kg of trifunctional polycarbonate 330 (hydroxyl value 56) and 150kg of difunctional polycarbonate 220 (hydroxyl value 56) are put into a reaction kettle, the materials are stirred and dehydrated under vacuum at 100-110 ℃ and-0.09-0.10 MPa and low-boiling point substances are stirred for 2 hours, the temperature is reduced to 60-70 ℃, 150kg of diphenylmethane diisocyanate is added, the reaction is maintained at 70-80 ℃ for 3 hours, the temperature is reduced to 40-60 ℃, discharging is carried out, and the materials are packaged to be used as a component B.
And (3) mixing and stirring 100g of the component A and 45g of the component B at room temperature for 3-5 minutes, preparing a coating sample and maintaining.
Comparative example 7
According to the proportion and the preparation method of the high-performance polyurethane waterproof layer material disclosed in the examples 2 to 4, and the traditional waterproof layer material in the proportion 6, a test sample is prepared, surface drying time, actual drying time, tensile and aging treatment performance, water impermeability, low-temperature bending property, alkali resistance and bonding strength with a concrete substrate are tested, and the test standards and the test results are shown in the table 1.
Table 1 polyurethane water barrier performance test data
Figure BDA0003563793560000131
As can be seen from the data in Table 1, the surface drying time of the waterproof materials prepared in examples 2-4 is less than or equal to 2 h; the actual drying time is less than or equal to 24 hours; the tensile strength is more than or equal to 45 Mpa; the elongation at break is more than or equal to 500 percent; the tensile strength retention rate is more than or equal to 90 percent after heat treatment, acid treatment, alkali treatment and artificial weathering treatment; the retention rate of elongation at break is more than or equal to 90 percent after heat treatment, acid treatment, alkali treatment and artificial weathering treatment; no water seepage under the water impermeability (0.4Mpa, 2 h); no crack under low temperature bending (-35 ℃), no crack, no peeling after alkali resistance (500 h of saturated calcium hydroxide solution); the bonding strength with the concrete base surface is more than or equal to 5.0 Mpa. Compared with the embodiment 5 (comparative example), the coating has the advantages of short drying time, excellent tensile property and bonding property, capability of bearing repeated rolling of heavy-duty operation vehicles, excellent weather resistance and aging resistance, and suitability for high-performance polyurethane waterproof layer materials of railway ballast track bridge decks.
Comparative example 8
According to the proportion and the preparation method of the high-performance polyurethane waterproof layer material disclosed in the embodiment 4 and the proportion and the preparation method of the waterproof layer material disclosed in the comparative examples 1 to 5, a test sample is prepared, and surface drying time, actual drying time, tensile and aging treatment performance, water impermeability, low-temperature flexibility, alkali resistance and bonding strength with a concrete substrate are tested, and the test standards and the test results are shown in table 2.
Table 2 polyurethane waterproof layer performance experimental data
Figure BDA0003563793560000141
As shown in Table 2, the propylene carbonate glycol is adopted as the waterproof layer material, so that the waterproof layer material has the hydrolysis resistance of polyether polyol and the high physical and mechanical properties of polyester polyol, and has excellent weather resistance, hydrolysis resistance and wear resistance. The amine compound 3, 3 '-dimethyl-4, 4' -diaminodicyclohexyl methane contains a large amount of-NH 2, the reaction rate of the amine compound with the polyurethane prepolymer is far greater than that of water with the polyurethane prepolymer, and the amine compound has low moisture sensitivity, prevents bubbles from being generated, and simultaneously improves the heat resistance, weather resistance and wear resistance of the waterproof layer. Meanwhile, the amine compound is aliphatic diamine and does not contain benzene ring, so that the phenomenon that the product turns yellow due to the fact that the amine compound is irradiated by ultraviolet light to form a quinoid structure is avoided. The isocyanate adopts HDI tripolymer which is liquid at normal temperature and is solid at normal temperature different from other tripolymers, is convenient to use, has the characteristics of low viscosity, high light resistance, good toughness and adhesion and the like, and has superior light stability and weather resistance compared with aromatic diisocyanate such as TDI and MDI. The plasticizer adopts tris (2-ethylhexyl) phosphate, has excellent low temperature resistance and weather resistance, has a certain flame retardant effect due to phosphorus, reduces the viscosity of liquid materials, and increases the toughness of products.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (6)

1. The high-performance polyurethane waterproof layer material for the bridge deck of the ballast track of the railway is characterized by comprising 100 parts of a material A and 92-99 parts of a material B in parts by mass, wherein:
the material A comprises the following materials in parts by weight: 40.5-53.7 parts of polycarbonate polyol, 25-31 parts of amine compound, 19-25 parts of plasticizer, 1-2 parts of water removing agent, 0.8-1.2 parts of coupling agent and 0.3-0.5 part of catalyst;
the material B consists of the following materials in parts by weight: 63-69 parts of isocyanate and 31-37 parts of polycarbonate polyol.
2. The railway ballast track bridge floor high-performance polyurethane waterproof layer material of claim 1, which is composed of 100 parts of material A and 95 parts of material B in parts by mass, wherein:
the material A comprises the following materials in parts by weight: 46.1 parts of polycarbonate polyol, 28 parts of amine compound, 23 parts of plasticizer, 1.5 parts of water removing agent, 1.0 part of coupling agent and 0.4 part of catalyst;
the material B consists of the following materials in parts by weight: 66 parts of isocyanate and 34 parts of polycarbonate polyol.
3. The railway ballast track bridge floor high-performance polyurethane waterproof layer material as claimed in claim 2, wherein the molecular weight of the polycarbonate polyol is 3000, and the polycarbonate polyol is polypropylene carbonate glycol.
4. The railway ballast track bridge deck high-performance polyurethane waterproof layer material as claimed in claim 2, wherein the amine compound is 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane;
the plasticizer is tri (2-ethylhexyl) phosphate;
the water remover is an oxazolidine water remover;
the coupling agent is KH-560;
the catalyst consists of an organic zinc catalyst and an organic bismuth catalyst;
the isocyanate is HDI trimer.
5. The preparation method of the high-performance polyurethane waterproof layer material for the railway ballast track bridge floor according to any one of claims 1 to 4, characterized by comprising the following steps:
s1: preparing a material A, namely dehydrating polycarbonate polyol to the water content of below 0.05 percent under the conditions of 105 +/-10 ℃ and-0.095 MPa, adding an amine compound, a plasticizer, a water removing agent, a coupling agent and a catalyst, uniformly stirring, and filtering to remove impurities to obtain the material A;
preparing a material B, namely adding polycarbonate polyol into isocyanate, uniformly mixing, carrying out polymerization reaction for 1-3 hours at the temperature of 70-90 ℃, and filtering to remove impurities after the polymerization reaction is finished and the product is qualified through a-NCO value test to obtain the material B;
s2: and (3) putting the material A and the material B prepared in the step S1 in an environment with the temperature of 20-50 ℃, and mixing the materials according to the mass ratio of 100: 92-99 mixing.
6. The method for preparing the railway ballast track bridge floor waterproof layer by using the preparation method of claim 5 is characterized in that the temperature of the prepared material A and the prepared material B is controlled to be 20-50 ℃, and the weight ratio of the prepared material A to the prepared material B is 100: 92-99, uniformly mixing, constructing to the surface of the base layer, and curing at normal temperature for 7 days.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820016A (en) * 2014-02-28 2014-05-28 北京东方雨虹防水技术股份有限公司 Polycarbonate type polyurethane primer and preparation method thereof
CN109016752A (en) * 2018-08-03 2018-12-18 山东诺威聚氨酯股份有限公司 Polyurethane elastomeric compositions and preparation method thereof for Ballast track waterproof layer
CN110423592A (en) * 2019-07-24 2019-11-08 福耀玻璃工业集团股份有限公司 Dual-component polyurethane adhesive and preparation method thereof
CN111019589A (en) * 2019-12-11 2020-04-17 格丽泰新材料科技（苏州）有限公司 Two-component polyurethane adhesive, preparation method thereof and application thereof in soft package battery
CN112752820A (en) * 2018-09-28 2021-05-04 横滨橡胶株式会社 Two-part curable adhesive composition

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820016A (en) * 2014-02-28 2014-05-28 北京东方雨虹防水技术股份有限公司 Polycarbonate type polyurethane primer and preparation method thereof
CN109016752A (en) * 2018-08-03 2018-12-18 山东诺威聚氨酯股份有限公司 Polyurethane elastomeric compositions and preparation method thereof for Ballast track waterproof layer
CN112752820A (en) * 2018-09-28 2021-05-04 横滨橡胶株式会社 Two-part curable adhesive composition
CN110423592A (en) * 2019-07-24 2019-11-08 福耀玻璃工业集团股份有限公司 Dual-component polyurethane adhesive and preparation method thereof
CN111019589A (en) * 2019-12-11 2020-04-17 格丽泰新材料科技（苏州）有限公司 Two-component polyurethane adhesive, preparation method thereof and application thereof in soft package battery

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