CN110760264A - Asphalt polyurethane waterproof coating suitable for cement base layer and preparation method and application thereof - Google Patents

Asphalt polyurethane waterproof coating suitable for cement base layer and preparation method and application thereof Download PDF

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Publication number
CN110760264A
CN110760264A CN201910931557.XA CN201910931557A CN110760264A CN 110760264 A CN110760264 A CN 110760264A CN 201910931557 A CN201910931557 A CN 201910931557A CN 110760264 A CN110760264 A CN 110760264A
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asphalt
polyurethane prepolymer
cement
waterproof coating
base layer
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CN201910931557.XA
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CN110760264B (en
Inventor
贺小钢
李忠人
赵祖兵
徐加康
马世界
韩玉
李俊
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Jiangsu Canlon Building Materials Co Ltd
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Jiangsu Canlon Building Materials Co Ltd
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Priority to CN201910931557.XA priority Critical patent/CN110760264B/en
Priority to CN202111071981.5A priority patent/CN113736367B/en
Publication of CN110760264A publication Critical patent/CN110760264A/en
Priority to PCT/CN2020/097721 priority patent/WO2021057132A1/en
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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
    • C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
    • 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
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4808—Mixtures of two or more polyetherdiols
    • 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
    • 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
    • C08G18/61—Polysiloxanes
    • 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
    • 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
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • 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
    • C09D7/65—Additives macromolecular
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium

Abstract

The invention discloses an asphalt polyurethane waterproof coating suitable for a cement base layer and a preparation method and application thereof, wherein the raw materials comprise asphalt, a compatilizer, a water removing agent, a catalyst, a filler and an end-capped polyurethane prepolymer,the end-capped polyurethane prepolymer is prepared by reacting a compound shown as a formula (I) with a polyurethane prepolymer, and the end-capped polyurethane prepolymer does not contain an end isocyanate group; preparation: preparing an end-capped polyurethane prepolymer, and mixing the end-capped polyurethane prepolymer with the rest raw materials; and the application of the waterproof coating on the asphalt waterproof coiled material constructed on the cement base layer; the waterproof coating disclosed by the invention is safe in preparation process, can be directly coated on a cement base layer with more water content during use, can react with silicate in cement after hydrolysis, improves the bonding force on a wet base layer, has excellent bonding strength with an asphalt waterproof coiled material, particularly has relatively fast surface drying and drying time and moderate viscosity (the step of heating before construction can be basically avoided), and is beneficial to field construction.

Description

Asphalt polyurethane waterproof coating suitable for cement base layer and preparation method and application thereof
Technical Field
The invention belongs to the field of building waterproofing, and particularly relates to an asphalt polyurethane waterproof coating suitable for a cement base layer, and a preparation method and application thereof.
Background
At present, waterproof coiled materials are greatly popularized and used in construction and application, are mainly used for building walls, roofs, tunnels, highways and the like, can be rolled into a roll-shaped flexible building material product which can resist external rainwater and underground water leakage, serve as a leakage-free connection between an engineering foundation and a building, are a first barrier for water prevention of the whole engineering, play a vital role in the whole engineering, and must be constructed strictly according to requirements such as GB5027-2002 (roofing engineering quality acceptance standard) and design regulations. Wherein, the base layer (which is basically a cement base layer at present) has certain strength, and the base layer is not required to be shelled, loosened and uneven, and the dust and foreign matters on the roof and the compartment seams are required to be removed; the base layer is required to be dry, the water content is less than 8%, and the like, the base layer is generally whitish and does not have obvious water marks or a piece of asphalt felt with the thickness of 1m multiplied by 1m is flatly paved on the surface of a clean flat layer for 3-4h, if the color of the surface of the base layer covered with the asphalt felt is still the same as that of the surrounding uncovered part and no obvious water mark exists, the water content reaches the requirement. However, in the construction process, especially in the time period of rapid weather change and humid air such as rainy days, the construction based on the waterproof roll needs to strictly control the moisture content of the cement base layer, which has good construction effect, and thus, the construction progress is obviously affected, the construction period is not shortened, and the construction cost is reduced.
Waterproof coiled material product mainly has pitch waterproofing membrane and polymer waterproofing membrane among the prior art, wherein pitch waterproofing membrane's range of application is still very extensive, but apply it just to have still to carry out the step of preliminary treatment to the cement base course on the layer at the cement base, this step includes the control of impurity and water content, impurity is cleaned more easily, but water content especially meets weather variation such as plum rainy day fast, the humid time quantum of air, will be difficult to real-time accurate control, pitch waterproofing membrane still remains to improve with the adhesive force of cement base course simultaneously.
In order to solve the problem of the adhesion, a reactive modified asphalt base layer treating agent has been proposed in the prior art, for example, chinese patent CN110184017A, the raw materials of which include silane modified polyurethane prepolymer, asphalt compatilizer, silane dehydrator, catalyst, filler, silane coupling agent, and defoamer. Although the patent can construct a priming on a wet base surface, and emphasizes that the problem that carbon dioxide bubbles are generated by moisture curing in the prior art can be avoided, so as to ensure firm bonding, silane is directly dripped to a silane grafted polyurethane prepolymer prepared by isocyanate-terminated silane, wherein the silane is a conventional silane coupling agent capable of reacting with isocyanate groups, and the silane reacts with the isocyanate groups too violently and the reaction process is uncontrollable in actual production, particularly when the reaction amount is large, so that the method adopted in the preparation method is dripping, which is not beneficial to safe production, also has low preparation efficiency and is not suitable for industrial production; meanwhile, the viscosity of the paint is high, and the paint is not beneficial to field construction.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to overcome the defects in the prior art, and provide an improved waterproof coating material which is suitable for a cement base layer and has safe and efficient preparation process, wherein the waterproof coating material can be directly coated on the cement base layer with a large water content in the use process, and reacts with silicate in cement after hydrolysis to improve the adhesive force on a wet base layer, and meanwhile, the waterproof coating material can have excellent adhesive strength with an asphalt waterproof coiled material, especially can have a fast surface drying and solid drying time and moderate viscosity (basically can avoid the step of heating before construction), and is beneficial to field construction.
The invention also provides a method for preparing the asphalt polyurethane waterproof coating suitable for the cement base layer.
The invention also provides a construction method of the asphalt waterproof coiled material.
In order to solve the technical problems, the invention adopts a technical scheme as follows:
an asphalt polyurethane waterproof coating suitable for a cement base layer comprises raw materials including asphalt, a compatilizer, a water scavenger, a catalyst and a filler, and also comprises an end-capped polyurethane prepolymer, wherein the end-capped polyurethane prepolymer is prepared by reacting a compound shown in a formula (I) with the polyurethane prepolymer, the end-capped polyurethane prepolymer does not contain an end isocyanate group, and the mass ratio of the end-capped polyurethane prepolymer to the asphalt to the compatilizer is 30-50: 40-60: 1;
in the formula, R1、R2、R3、R4Are each independently selected from C1-8M is 1 or 2, and n is 1, 2, 3 or 4.
In the present invention, the above-mentioned pair R1、R2、R3、R4And m and n are preferably limited, so that the reaction of the compound shown in the formula (I) and the polyurethane prepolymer is controlled, and is neither too fast nor too slow, the whole reaction process can be carried out under the safe and controllable condition, and the industrial utilization is facilitated.
According to the invention, the end-capped polyurethane prepolymer is fully end-capped, and the feeding amount of the compound shown in the formula (I) and the polyurethane prepolymer is adjusted according to the purpose of obtaining the fully end-capped polyurethane prepolymer.
According to some preferred aspects of the present invention, the reaction temperature of the reaction of the compound of formula (I) with the polyurethane prepolymer is 60 to 100 ℃.
According to some preferred and specific aspects of the invention, R1、R2、R3、R4Each independently selected from methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert-butyl, -CH2CH2CH2CH2CH3、-CH(CH3)CH2CH2CH3、-CH2CH(CH3)CH2CH3、-CH2CH2CH(CH3)2、-CH(C2H5)CH2CH3、-C(CH3)2CH2CH3、-CH(CH3)CH(CH3)2、-CH2C(CH3)3Or a hexyl group.
According to a particular aspect of the invention, R1、R2、R3、R4Each independently selected from methyl, ethyl or propyl.
According to some preferred aspects of the present invention, the content of the terminal isocyanate group in the polyurethane prepolymer is 4 to 10%.
According to some embodiments of the invention, the polyurethane prepolymer is prepared by reacting a polyol, which is a polyether polyol and/or a polyester polyol, with a polyisocyanate, which is a combination of one or more selected from the group consisting of diisocyanates and prepolymers thereof, triisocyanates and prepolymers thereof. In some embodiments, the polyol is a combination of one or more selected from the group consisting of polyether diols, polyether triols, and polyester diols, for example including, but not limited to, polyether diol 2000, polyether triol 3050, polyether diol 8000, polyether diol 6000, polyether diol 1000, polyether diol 400, polyether triol 330N, and the like, and polyisocyanates including, but not limited to, Toluene Diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI), dicyclohexylmethane diisocyanate (HMDI), Hexamethylene Diisocyanate (HDI), Naphthylamine Diisocyanate (NDI), and the like.
According to some preferred aspects of the invention, the raw material further comprises a silane coupling agent and/or an antifoaming agent, the silane coupling agent is vinyl triethoxysilane, vinyl trimethoxysilane or vinyl tris (β -methoxyethoxy) silane, the antifoaming agent is a physical antifoaming agent and/or a chemical antifoaming agent, the physical antifoaming agent is a polysiloxane antifoaming agent and/or a silicone antifoaming agent, and the chemical antifoaming agent is one or a combination of more of calcium oxide, magnesium oxide and calcium hydroxide.
According to some preferable aspects of the invention, the raw materials comprise, by mass, 30-50 parts of end-capped polyurethane prepolymer, 40-60 parts of asphalt, 1-2 parts of compatilizer, 1-2 parts of water scavenger, 0.1-0.2 part of catalyst, 0.5-2 parts of filler, and optionally 0.1-0.5 part of silane coupling agent and 0.1-0.3 part of defoaming agent.
In some embodiments of the invention, the asphalt is a combination of one or more selected from road No. 10, road No. 70, road No. 90, road No. 100, and road No. 200.
In some embodiments of the invention, the compatibilizing agent is a polyethylene wax and/or a polyacetamide wax. The two compounds have the characteristics of high temperature, low viscosity and low temperature thixotropy, can have both polar groups and nonpolar structures through the selection of molecular connecting segments, and can be fully dissolved and mutually dissolved in polyurethane and asphalt respectively.
In some embodiments of the invention, the water scavenger is silane 171.
In some embodiments of the invention, the catalyst is a combination of one or more selected from the group consisting of dibutyltin dilaurate, stannous octoate, environmentally friendly non-butyltin catalysts, bismuth carboxylate-based catalysts, zinc naphthenate, pentamethyldipropylenetriamine, tetramethylethylenediamine, and dimorpholine-based catalysts.
In some embodiments of the invention, the filler is a combination of one or more selected from fumed silica, gypsum whiskers, nano calcium carbonate, nano aluminum nitride, nano boron nitride, nano aluminum borate, heavy calcium, talc, light calcium, kaolin, and wollastonite powder.
The invention provides another technical scheme that: the preparation method of the asphalt polyurethane waterproof coating suitable for the cement base layer comprises the following steps:
(1) preparing an end-capped polyurethane prepolymer: firstly, preparing a polyurethane prepolymer, then mixing a compound shown as a formula (I) with the polyurethane prepolymer, and reacting to prepare an end-capped polyurethane prepolymer; wherein the molar charge amount of the terminal amino in the compound shown in the formula (I) is more than that of the terminal isocyanate group contained in the polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
The invention provides another technical scheme that: a construction method of an asphalt waterproof coiled material on a cement base layer comprises the following steps: the asphalt polyurethane waterproof coating suitable for the cement base layer is coated on the cement base layer to form a waterproof coating, and then the asphalt waterproof coiled material is coated on the waterproof coating.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, the specific compound of formula (1) is innovatively adopted to carry out full-end capping on the polyurethane prepolymer, on one hand, the process for preparing the end-capped polyurethane prepolymer can be controlled, violent reaction is avoided, the safety is improved, meanwhile, the waterproof coating can be directly coated on a wet cement base layer, the bonding force between the waterproof coating and a base material layer is improved by the reaction of the hydrolyzed group contained in the end-capped polyurethane prepolymer and silicate in cement, and the waterproof coating has excellent bonding strength with an asphalt waterproof coiled material containing the same material, especially, the waterproof coating has the advantages of fast surface drying and full drying time, moderate viscosity (the step of heating before construction can be basically avoided), and the method is favorable for site construction.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples; it is to be understood that these embodiments are provided to illustrate the general principles, essential features and advantages of the present invention, and the present invention is not limited in scope by the following embodiments; the implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
In the following examples, all starting materials are either commercially available or prepared by conventional methods in the art, unless otherwise specified.
In the following, polyether diol 2000, polyether diol 1000 and polyether diol 400 are respectively purchased from Toddata, toluene diisocyanate is BASF TDI, and diphenylmethane diisocyanate is BASF MDI;
the compounds of formula (I) used in the following each have the structures shown below, all purchased from winning chemistry:
Figure BDA0002220364390000051
formula (I-1): r1、R2、R3、R4Both are methyl, and both m and n are 1;
formula (I-2): r1、R2、R3、R4Are all methyl, m is 2, n is 1;
formula (I-3): r1、R2Are each methyl, R3、R4Are all ethyl groups, m is 1, and n is 1;
formula (I-4): r1、R2Are all ethyl radicals, R3、R4Are each methyl, m is 1 and n is 1.
Example 1
The embodiment provides an asphalt polyurethane waterproof coating suitable for a cement base layer, which comprises the following raw materials in parts by weight: 30 parts of end-capped polyurethane prepolymer, 60 parts of road No. 10 asphalt, 1 part of polyethylene wax, 1711 part of silane as a water removing agent, 0.1 part of dibutyltin dilaurate, 0.5 part of fumed silica, 0.2 part of vinyl triethoxysilane and 0.1 part of calcium oxide.
The preparation method comprises the following steps:
(1) preparing an end-capped polyurethane prepolymer:
50 parts of Dongda polyether diol 2000 is dehydrated in vacuum at 120 ℃ and-0.1 MPA condition until the moisture content is below 0.05 percent, then the Dongda polyether diol and 10 parts of Pasteur TDI are mixed to react for 3 hours at 80 ℃, and the reaction is stopped when the NCO content is measured to be about 4.6 percent, so as to prepare 60 parts of polyurethane prepolymer;
then 20 parts of compound shown in formula (I-1) and 60 parts of polyurethane prepolymer prepared by the method are mixed and reacted at 60 ℃ to prepare 80 parts of end-capped polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
Example 2
The embodiment provides an asphalt polyurethane waterproof coating suitable for a cement base layer, which comprises the following raw materials in parts by weight: 40 parts of end-capped polyurethane prepolymer, 55 parts of road No. 10 asphalt, 1 part of polyethylene wax, 1711 parts of silane as a water removing agent, 0.2 part of dibutyltin dilaurate, 0.7 part of fumed silica, 0.1 part of vinyl triethoxysilane and 0.1 part of calcium oxide.
The preparation method comprises the following steps:
(1) preparing an end-capped polyurethane prepolymer:
50 parts of Dongda polyether diol 2000 and 25 parts of Dongda polyether diol 1000 are dehydrated in vacuum at 120 ℃ and-0.1 MPA conditions until the moisture content is below 0.05 percent, then the Dongda polyether diol and 20 parts of Basff TDI are mixed and reacted for 3 hours at 80 ℃, and the reaction is terminated when the measured NCO content is about 5.8 percent, so that 95 parts of polyurethane prepolymer is prepared;
then 50 parts of compound shown as formula (I-2) and 95 parts of polyurethane prepolymer prepared by the method are mixed and reacted at 60 ℃ to prepare 145 parts of end-capped polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
Example 3
The embodiment provides an asphalt polyurethane waterproof coating suitable for a cement base layer, which comprises the following raw materials in parts by weight: 50 parts of end-capped polyurethane prepolymer, 40 parts of road No. 10 asphalt, 1 part of polyethylene wax, 1711 part of silane as a water removing agent, 0.1 part of dibutyltin dilaurate, 0.8 part of fumed silica, 0.2 part of vinyl triethoxysilane and 0.2 part of calcium oxide.
The preparation method comprises the following steps:
(1) preparing an end-capped polyurethane prepolymer:
vacuum dehydrating 25 parts of Dongda polyether diol 400 and 25 parts of Dongda polyether diol 1000 at 120 ℃ and-0.1 MPA until the water content is below 0.05 percent, mixing the dehydrated Dongda polyether diol with 45 parts of Pasteur MDI, reacting for 2 hours at 80 ℃, and stopping the reaction when the measured NCO content is about 8.17 percent to prepare 95 parts of polyurethane prepolymer;
then 55 parts of compound shown as formula (I-3) and 95 parts of polyurethane prepolymer prepared by the method are mixed and reacted at 60 ℃ to prepare 150 parts of end-capped polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
Example 4
The embodiment provides an asphalt polyurethane waterproof coating suitable for a cement base layer, which comprises the following raw materials in parts by weight: 50 parts of end-capped polyurethane prepolymer, 50 parts of road No. 70 asphalt, 1 part of polyacetamide wax, 1711 parts of water-removing agent silane, 0.1 part of dibutyltin dilaurate, 0.8 part of fumed silica, 0.1 part of vinyl triethoxysilane and 0.2 part of calcium oxide.
The preparation method comprises the following steps:
(1) preparing an end-capped polyurethane prepolymer:
vacuum dehydrating 92 parts of Dongda polyether glycol 2000 at 120 ℃ and-0.1 MPA to a moisture content of 0.05% or less, and mixing with 17 parts of Bassfer TDI to react at 80? h, terminating the reaction when the NCO content is measured to be about 4 percent, and preparing 109 parts of polyurethane prepolymer;
then, 36 parts of compound shown as formula (I-4) and 109 parts of polyurethane prepolymer prepared by the method are mixed and reacted at 60 ℃ to prepare 145 parts of end-capped polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
Comparative example 1
Basically, the method is the same as the method of the embodiment 1, and the method only differs from the method in that: the compound represented by the formula (I-1) is replaced with an equimolar amount of a silane coupling agent such as aminotriethoxysilane.
Because the silane coupling agent reacts too violently with the polyurethane prepolymer, the silane coupling agent is dripped into the polyurethane prepolymer for reaction when the end-capped polyurethane prepolymer is prepared in the preparation method.
Comparative example 2
Basically, the method is the same as the method of the embodiment 1, and the method only differs from the method in that: the same amount of prepared polyurethane prepolymer is directly used without carrying out end-capping modification on the polyurethane prepolymer.
Performance testing
After the waterproof coatings obtained in examples 1 to 4 and comparative examples 1 to 2 were formed into films, the respective properties were tested, specifically, see table 1.
TABLE 1
Figure BDA0002220364390000081
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. An asphalt polyurethane waterproof coating suitable for a cement base layer comprises raw materials including asphalt, a compatilizer, a water scavenger, a catalyst and a filler, and is characterized in that the raw materials further comprise a blocked polyurethane prepolymer, the blocked polyurethane prepolymer is prepared by reacting a compound shown in a formula (I) with the polyurethane prepolymer, the blocked polyurethane prepolymer does not contain a blocked isocyanate group, and the feeding mass ratio of the blocked polyurethane prepolymer to the asphalt to the compatilizer is 30-50: 40-60: 1;
Figure FDA0002220364380000011
in the formula, R1、R2、R3、R4Are each independently selected from C1-8M is 1 or 2, and n is 1, 2, 3 or 4.
2. The asphalt polyurethane waterproof coating suitable for the cement-based layer as claimed in claim 1, wherein the reaction temperature of the reaction of the compound represented by formula (I) with the polyurethane prepolymer is 60-100 ℃.
3. The asphalt polyurethane waterproofing coating material suitable for cement-based layers according to claim 1 or 2, wherein R is R1、R2、R3、R4Each independently selected from methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert-butyl, -CH2CH2CH2CH2CH3、-CH(CH3)CH2CH2CH3、-CH2CH(CH3)CH2CH3、-CH2CH2CH(CH3)2、-CH(C2H5)CH2CH3、-C(CH3)2CH2CH3、-CH(CH3)CH(CH3)2、-CH2C(CH3)3Or a hexyl group.
4. The asphalt polyurethane waterproof coating material suitable for a cement-based layer according to claim 1 or 2, wherein the content of the terminal isocyanate group in the polyurethane prepolymer is 4 to 10%.
5. The asphalt polyurethane waterproof paint suitable for cement-based layers as claimed in claim 4, wherein the polyurethane prepolymer is prepared by reacting polyol and polyisocyanate, the polyol is polyether polyol and/or polyester polyol, and the polyisocyanate is one or more selected from diisocyanate and its prepolymer, triisocyanate and its prepolymer.
6. The asphalt polyurethane waterproof coating material suitable for the cement-based layer as claimed in claim 1, wherein said raw material further comprises a silane coupling agent and/or an antifoaming agent, said silane coupling agent is vinyltriethoxysilane, vinyltrimethoxysilane or vinyltris (β -methoxyethoxy) silane, said antifoaming agent is a physical antifoaming agent and/or a chemical antifoaming agent, said physical antifoaming agent is a polysiloxane antifoaming agent and/or a silicone antifoaming agent, and said chemical antifoaming agent is a combination of one or more selected from the group consisting of calcium oxide, magnesium oxide and calcium hydroxide.
7. The asphalt polyurethane waterproof coating suitable for the cement-based layer as claimed in claim 1, wherein the raw materials comprise, by mass, 30-50 parts of end-capped polyurethane prepolymer, 40-60 parts of asphalt, 1-2 parts of compatilizer, 1-2 parts of water scavenger, 0.1-0.2 part of catalyst, 0.5-2 parts of filler, and optionally 0.1-0.5 part of silane coupling agent and 0.1-0.3 part of defoaming agent.
8. The asphalt polyurethane waterproofing coating material suitable for cement-based layers according to claim 7, the asphalt is one or more selected from road No. 10, road No. 70, road No. 90, road No. 100 and road No. 200, the compatilizer is polyethylene wax and/or polyacetamide wax, the water removing agent is silane 171, the catalyst is one or more of dibutyltin dilaurate, stannous octoate, environment-friendly non-butyltin catalyst, bismuth carboxylate catalyst, zinc naphthenate, pentamethyl dipropylene triamine, tetramethyl ethylene diamine and dimorpholine catalyst, the filler is one or more of fumed silica, gypsum whisker, nano calcium carbonate, nano aluminum nitride, nano boron nitride, nano aluminum borate, heavy calcium, talcum powder, light calcium, kaolin and wollastonite powder.
9. A method for preparing the asphalt polyurethane waterproofing paint suitable for cement-based layers according to any one of claims 1 to 8, wherein the method comprises the steps of:
(1) preparing an end-capped polyurethane prepolymer: firstly, preparing a polyurethane prepolymer, then mixing a compound shown as a formula (I) with the polyurethane prepolymer, and reacting to prepare an end-capped polyurethane prepolymer; wherein the molar charge amount of the terminal amino in the compound shown in the formula (I) is more than that of the terminal isocyanate group contained in the polyurethane prepolymer;
(2) preparing a waterproof coating: weighing the raw materials according to the formula, and mixing to prepare the traditional Chinese medicine.
10. A construction method of an asphalt waterproof coiled material on a cement base layer is characterized by comprising the following steps: firstly, the asphalt polyurethane waterproof paint suitable for the cement base layer according to any one of claims 1 to 8 is coated on the cement base layer to form a waterproof coating, and then an asphalt waterproof coiled material is coated on the waterproof coating.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112538333A (en) * 2020-12-10 2021-03-23 江西晨光新材料股份有限公司 Bi-component room temperature vulcanized silicone rubber and preparation method and application thereof
WO2021057132A1 (en) * 2019-09-29 2021-04-01 江苏凯伦建材股份有限公司 Asphalt-polyurethane waterproof coating for cement base, preparation method therefor and use thereof
CN113897110A (en) * 2021-03-16 2022-01-07 苏州中材非金属矿工业设计研究院有限公司 Asphalt waterproof coating capable of being constructed at normal temperature and construction method thereof
CN116396012A (en) * 2022-12-02 2023-07-07 中冶路桥建设有限公司 Warm-mix high-modulus modified asphalt mixture, production process and production device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116102787B (en) * 2023-02-20 2023-09-22 上海石化西尼尔化工科技有限公司 High-temperature-resistant high-pressure-resistant antioxidant and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113302A (en) * 2006-07-28 2008-01-30 中宏（天津）实业有限公司 Preparation method of asphalt polyurethane waterproofing paint
CN102719187A (en) * 2012-07-10 2012-10-10 湖北工程学院 Single-component asphalt polyurethane waterproof coating and preparation method thereof
CN109666115A (en) * 2017-10-16 2019-04-23 万华化学集团股份有限公司 A kind of amino-silane terminated modified polyurethane resin and preparation method thereof
CN109735223A (en) * 2018-12-29 2019-05-10 北京东方雨虹防水技术股份有限公司 A kind of modified double components polyurethane water-proof paint and preparation method thereof
CN110184017A (en) * 2019-06-24 2019-08-30 江苏凯伦建材股份有限公司 Response type modified pitch base treatment agent and preparation method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005213981A (en) * 2004-02-02 2005-08-11 Tajima Roofing Co Ltd Waterproofing work asphalt composition, waterproofing heating technique using the same and its hardened material
DE102004055450A1 (en) * 2004-11-17 2006-05-18 Degussa Ag Moisture-curing binder
US8232362B2 (en) * 2005-09-15 2012-07-31 Momentive Performance Materials Inc. Preparation of amino-silane terminated polymer by using organic bismuth catalyst and cured polymer therefrom by using non-tin catalyst
CN102432793B (en) * 2011-11-25 2014-02-05 广州杰锐体育设施有限公司 Environment-friendly polyurethane prepolymer and synthetic method thereof
US20150291839A1 (en) * 2014-04-11 2015-10-15 Custom Building Products, Inc. Moisture-Curing Compositions, Methods and Products
US9920199B2 (en) * 2014-09-02 2018-03-20 Dow Global Technologies Llc Silyl terminated prepolymers, method for making them and adhesive compositions made therefrom
CN104194608A (en) * 2014-09-11 2014-12-10 北京东方雨虹防水技术股份有限公司 Organosilane modified single-component polyurethane waterproof coating and preparation method thereof
CN106146775B (en) * 2015-03-25 2019-04-23 交通运输部公路科学研究所 Plant oil base asphalt modifier, the modified pitch containing the modifying agent and its preparation
CN109535412B (en) * 2018-11-16 2021-05-11 上海东大化学有限公司 Secondary amino silane coupling agent and preparation method thereof
CN110760264B (en) * 2019-09-29 2021-10-22 江苏凯伦建材股份有限公司 Asphalt polyurethane waterproof coating suitable for cement base layer and preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113302A (en) * 2006-07-28 2008-01-30 中宏（天津）实业有限公司 Preparation method of asphalt polyurethane waterproofing paint
CN102719187A (en) * 2012-07-10 2012-10-10 湖北工程学院 Single-component asphalt polyurethane waterproof coating and preparation method thereof
CN109666115A (en) * 2017-10-16 2019-04-23 万华化学集团股份有限公司 A kind of amino-silane terminated modified polyurethane resin and preparation method thereof
CN109735223A (en) * 2018-12-29 2019-05-10 北京东方雨虹防水技术股份有限公司 A kind of modified double components polyurethane water-proof paint and preparation method thereof
CN110184017A (en) * 2019-06-24 2019-08-30 江苏凯伦建材股份有限公司 Response type modified pitch base treatment agent and preparation method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021057132A1 (en) * 2019-09-29 2021-04-01 江苏凯伦建材股份有限公司 Asphalt-polyurethane waterproof coating for cement base, preparation method therefor and use thereof
CN112538333A (en) * 2020-12-10 2021-03-23 江西晨光新材料股份有限公司 Bi-component room temperature vulcanized silicone rubber and preparation method and application thereof
CN112538333B (en) * 2020-12-10 2022-04-29 江西晨光新材料股份有限公司 Bi-component room temperature vulcanized silicone rubber and preparation method and application thereof
CN113897110A (en) * 2021-03-16 2022-01-07 苏州中材非金属矿工业设计研究院有限公司 Asphalt waterproof coating capable of being constructed at normal temperature and construction method thereof
CN113897110B (en) * 2021-03-16 2022-07-12 苏州中材非金属矿工业设计研究院有限公司 Asphalt waterproof coating capable of being constructed at normal temperature and construction method thereof
CN116396012A (en) * 2022-12-02 2023-07-07 中冶路桥建设有限公司 Warm-mix high-modulus modified asphalt mixture, production process and production device
CN116396012B (en) * 2022-12-02 2024-02-23 中冶路桥建设有限公司 Warm-mix high-modulus modified asphalt mixture, production process and production device

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