CN104559734B - Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof - Google Patents
Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof Download PDFInfo
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- CN104559734B CN104559734B CN201510039836.7A CN201510039836A CN104559734B CN 104559734 B CN104559734 B CN 104559734B CN 201510039836 A CN201510039836 A CN 201510039836A CN 104559734 B CN104559734 B CN 104559734B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- 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
- C08G18/3228—Polyamines acyclic
-
- 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
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three 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
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
-
- 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
- C08G18/60—Polyamides or polyester-amides
- C08G18/603—Polyamides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a double-component chemical-reaction thixotropic polyurethane waterproof paint which is composed of a component A and a component B. The component A comprises the following ingredients in parts by weight: 20-40 parts of isocyanate, 20-50 parts of polyether glycol, 5-15 parts of plasticizer and 0-1 part of high-performance assistant. The component B comprises the following ingredients in parts by weight: 20-40 parts of polyether glycol, 5-30 parts of chain extender, 5-20 parts of plasticizer, 0.1-1 part of polymerization inhibitor, 0.1-1 part of amine reactant, 0.2-1 part of catalyst, 20-40 parts of pigment and filler, 5-20 parts of solvent and 0.1-1 part of high-performance assistant. Since the component B contains the special-type amine reactant capable of reacting with isocyanate, the polyurea compound can be quickly generated after the two components are mixed under the action of the specific polymerization inhibitor; and the compound can form abundant hydrogen bonds with the polyurethane prepolymer, so that the double-component chemical-reaction thixotropic polyurethane waterproof paint has favorable thixotropy and constructability.
Description
Technical field
The present invention relates to a kind of building water-proof paint, more particularly to a kind of two-component chemical reaction thixotropic polyurethane water-proof
Coating and preparation method thereof.
Background technology
Polyurethane water-proof paint belongs to chemical reaction type water-repellent paint, is a kind of elastomeric high elastic coating after solidification,
The material, with its excellent combination property, is so far using a kind of coating film waterproof material the most successful, in buildings waterproof
Occupy critical role using in.Polyurethane water-proof paint is divided into one pack system and bi-component two is big according to its composition and curing mechanism
Class, wherein bi-component are because film is closely knit, excellent performance, disposably thick can apply, production it is simple, extensively should the features such as low price
With.But due to liquid polyurethane good leveling property, elevation construction trickling especially severe, thickness etc. cannot be once gone up in elevation construction and be asked
Topic has become the difficult problem of industry, although can using multipass scratch repeatedly and bi-component mixing after place for a period of time, treat which
Constructed after coming in viscosity again, can slightly extenuate the problem of elevation construction trickling, but still be unable to effectively solving elevation construction stream
The problem dropped down, while also occurring that viscosity is big, scrapes not open, the new problem such as bad construction, causes to cause waste of material, construction cost
Increase.
For the problems referred to above, the more conventional solution in current this area is additional thixotropic agent improving the thixotroping of product
Performance so as to be able in elevation construction.But due to thixotropic agent such as gas-phase silica, gas that polyurethane material polarity is larger, common
The thixotropic effects in polyurethane system such as aerosil, castor oil hydrogenated and its derivant, organobentonite are very undesirable,
Although viscosity when product is constructed is increased using thixotropic agent, but solidification and the powerful polyurethane coating of cementitiousness are difficult to apply
Work, can application property it is very poor, increased construction cost.Such as CN201210324265.8 discloses a kind of dual-component polyurethane group
Angle glue, by different molecular weight, different degree of functionality polyether polyol, the selection of inorganic filler, thixotropic agent it is reasonably combined, and
And using cooperatively adhesion promoter and catalyst so as to curing rate is fast, bonding and good sealing effect, and with good thixotroping
Property and operating characteristics.CN201310315369.7 discloses a kind of Two-component waterborne polyurethane adhesive, traditional with cube
The characteristics of silane coupler is added in system strengthening its cohesion and keep viscosity little, but this kind of mode scope of application is narrower, leads to
The purposes such as joint filling are only used for often, while the restriction to raw material is stricter.
The content of the invention
Applicant have extensively studied the vertical elevation construction of Two-component Waterproof Polyurethane Coating and can application property for many years
Problem, and the polyurethane water-proof paint for realizing chemical reaction thixotropic is improved by constituting, in the feelings without using thixotropic agent
Under condition, it is ensured that Two-component Waterproof Polyurethane Coating has a good thixotropy, can effectively solving elevation construction trickling problem, together
When be easy to again construction
Specifically, the present invention is achieved through the following technical solutions：
A kind of two-component chemical reacts thixotropic polyurethane water-proof paint, is made up of two components of A, B, wherein component A bag
The weight portions of 20-40 containing isocyanates, polyethers 20-50 weight portions, plasticizer 5-15 weight portions and high performance adjuvant 0-1 weight portions, B
Component comprising polyethers 20-40 weight portions, chain extender 5-30 weight portions, plasticizer 5-20 weight portions, polymerization inhibitor 0.1-1 weight portions,
Amine reactant 0.1-1 weight portions, catalyst 0.2-1 weight portions, color stuffing 20-40 weight portions, solvent 5-20 weight portions, Gao Xing
Can auxiliary agent 0.1-1 weight portions；Wherein, described polymerization inhibitor is the one kind in orthophosphoric acid, tartaric acid, Benzenecarbonyl chloride., benzoic acid etc.
And/or more than one mixture, described amine reactant is polyethers diamine, small molecule diamine, polyamide and phenol
One kind and/or more than one mixture in aldehyde amine etc..
By above-mentioned improvement, interior rapid reaction, amine used reaction in B component in 5-10min after bi-component mixing
Agent is reacted with isocyanates, generates with specific molecular structure in the situation and preparation temperature of given polymerization inhibitor
Polyurea compound containing a large amount of urea groups, the compound form a large amount of hydrogen bonds with polyurethane, static viscous so as to sharply increase system
Degree forms paste, and static viscosity is sharply increased, with good thixotropy, it is possible to resolve elevation construction trickling especially severe；Together
When, viscosity is reduced rapidly under external force, and dynamic viscosity is basically unchanged, and is conducive to construction, is overcome conventionally employed addition and is touched
The scheme for becoming agent is difficult to the problem constructed.
In the present invention, described isocyanates are selected from toluene di-isocyanate(TDI) (TDI), methyl diphenylene diisocyanate
(MDI) one kind and/or more than one mixture in.
In the present invention, described polyether polyol selected from PPG class polyether polyol, POP birds of the same feather flock together compound polyether polyol,
One kind and/or more than one mixture in PTMEG class polytetramethylene oxide polyhydric alcohol etc.；Preferably, polyether polyol choosing
One kind and/or more than one mixture from polyether Glycols, polyether-tribasic alcohol, polyethers tetrahydroxylic alcohol etc., molecular weight is about
500-5000, hydroxyl value are 40-400mg KOH/g.
In the present invention, described chain extender be binary amine chain extender, di-alcoholss chain extender, the one of alcaminess chain extender
Plant and/or more than one mixture；Wherein, binary amine chain extender is 3,3 '-two chloro- 4,4- diaminodiphenyl-methanes
(MOCA)；Di-alcoholss chain extender is BDO, ethylene glycol, Propylene Glycol, diglycol, the one kind in neopentyl glycol
And/or more than one mixture；Alcaminess chain extender be ethanolamine, diethanolamine, triethanolamine, triisopropanolamine and N,
One kind and/or more than one mixture in N '-bis- (2- hydroxypropyls) aniline.
In the present invention, described catalyst is selected from organic gold such as dibutyl tin laurate, stannous octoate, isooctyl acid lead
Metal catalyst or fatty amines, alicyclic ring amine, aromatic amine and the tertiary amine catalyst such as alcaminess and its ammonium salt compounds
A kind of and/or more than one mixture.
In the present invention, described plasticizer is selected from as dioctyl phthalate, dibutyl phthalate, adjacent benzene two
One kind and/or more than one mixture in formic acid dinonyl, chlorinated paraffin, aromatic naphtha, citric acid ester plasticizer etc.,
Above-mentioned plasticizer used is good with the polyurethane compatibility, and stability and concertedness are notable.
In the present invention, described solvent is the one kind in toluene, dimethylbenzene, solvent naphtha, ethyl acetate, butyl acetate etc.
And/or more than one mixture.
In the present invention, described color stuffing is white carbon black, titanium dioxide, iron oxide yellow, Kaolin, cement, triple superphosphate, barium sulfate, oxygen
Change the one kind and/or more than one mixture in magnesium, calcium oxide, wollastonite, silicon powder, Pulvis Talci etc..
In the present invention, described high performance adjuvant is defoamer, levelling agent, anti-settling agent, coupling agent, antioxidant, slow setting
One kind and/or more than one mixture in agent etc. is various.Auxiliary agent described above is commonly used in this field, is this area
Technical staff is widely known.
Further, accordingly, the invention discloses above-mentioned two-component chemical reacts thixotropic polyurethane water-proof paint
Preparation method, comprises the steps：
Component A：
A. in reaction vessel, the polyether polyol of 20-50 weight portions, stirring is added to be warmed up to 100 DEG C -130 DEG C, vacuum
Under the conditions of be dehydrated 2～3 hours；
B. 60 DEG C -80 DEG C are reduced the temperature to, 20-40 weight portion isocyanates is added, under 60-100 DEG C of stirring, instead
Answer 2～3 hours；
C. 50 DEG C -60 DEG C are reduced the temperature to, 5-15 parts by weight of plasticizer and 0-1 weight portion high performance adjuvants, drop is added
Temperature obtains component A to 30 DEG C of -40 DEG C of nitrogen filled protections, discharging.
B component：
A. the polyether polyol of 20-40 weight portions, the chain extender of 5-30 weight portions, 5-20 weight are added in reaction vessel
The plasticizer of part, the color stuffing of 20-40 weight portions, stirring are warmed up to 100 DEG C -130 DEG C, are dehydrated 2～3 hours under vacuum condition；
B. 50 DEG C -60 DEG C are reduced the temperature to, 0.2-1 part by weight of catalyst, the polymerization inhibitor of 0.1-1 weight portions, 0.1-1 is added
The amine reactant of weight portion, 0.1-1 weight portion high performance adjuvants, 5-20 parts by weight solvent, stirring 1-2 hours, are uniformly dispersed
Afterwards, 30 DEG C of -40 DEG C of nitrogen filled protections are cooled to, discharging obtains B component.
Wherein, vacuum condition used is not particularly limited, and on general industry, vacuum -0.01MPa used can meet
Need.
In the storage position, two-component chemical reaction thixotropic polyurethane water-proof paint A, B component viscosity are very low, are respectively provided with
Extraordinary mobility, mixes in proportion the excellent compound of a kind of thixotropic property of production in rear 5-8min when in use,
This is thick and do not stick, it is slight firmly can stirring open, it is good to construct, but stir stop after retrogradation immediately, do not flow, in facade or tiltedly
Surface construction trickles or slight trickling, can more than film 1-1.5mm of elevation construction.
The two-component chemical reaction thixotropic polyurethane water-proof paint of the present invention overcomes conventional bicomponent polyurethane water-proof
Coating good leveling property, thixotropic property are poor, the shortcoming of elevation construction trickling, make Two-component Waterproof Polyurethane Coating by constituting improvement
With good thixotropic, it is possible to resolve the serious problem of elevation construction trickling.
Specific embodiment
It is in order to be better understood from the essence of the present invention, following to give embodiments of the present invention, it is merely to illustrate this
It is bright how to implement, not limit the present invention and only can be implemented by below scheme, on the basis of technical solution of the present invention is understood,
The change that carries out to the present invention, replacement, structural modification etc. still belong to protection scope of the present invention, and protection scope of the present invention is contained
It is placed on its claim and its equivalents.
Following raw materials used, are commercially available.
Embodiment 1
Proportioning raw materials：
Component A：
B component：
Technical process：
Component A：
A. in reaction vessel, the polyether polyol of 20-50 weight portions, stirring is added to be warmed up to 100 DEG C -130 DEG C, vacuum
To be dehydrated 2～3 hours under conditions of -0.01MPa；
B. 60 DEG C less than -80 DEG C are reduced the temperature to, 20-40 weight portion isocyanates is added, in 60-100 DEG C of stirring
Under, react 2～3 hours；
C. 50 DEG C less than -60 DEG C are reduced the temperature to, adds 5-15 parts by weight of plasticizer and 0-1 weight portion high-performance to help
Agent, is cooled to 30 DEG C of less than -40 DEG C nitrogen filled protections, and discharging obtains component A.
B component：
A. the polyether polyol of 20-40 weight portions, the chain extender of 5-30 weight portions, 5-20 weight are added in reaction vessel
The plasticizer of part, the color stuffing of 20-40 weight portions, stirring are warmed up to 100 DEG C -130 DEG C, and vacuum is de- under conditions of -0.01MPa
Water 2～3 hours；
B. 50 DEG C less than -60 DEG C are reduced the temperature to, add 0.2-1 part by weight of catalyst, the polymerization inhibitor of 0.1-1 weight portions,
The amine reactant of 0.1-1 weight portions, 0.1-1 weight portion high performance adjuvants, 5-20 parts by weight solvent, stirring 1-2 hours, dispersion
After uniform, 30 DEG C of less than -40 DEG C nitrogen filled protections are cooled to, discharging obtains B component.
During construction, A, B component are by weight 1: 1 mix homogeneously.
Embodiment 2
Proportioning raw materials：
Component A：
B component：
Technical process：
It is same as Example 1.
During construction, A, B component are by weight 1: 2 mix homogeneously.
Embodiment 3
Proportioning raw materials：
Component A：
B component：
Technical process：
It is same as Example 1.
During construction, A, B component are by weight 1: 1 mix homogeneously.
Comparative example
Raw material is taken as component A by following proportionings：
Molecular weight by 30 mass parts is 800 polypropylene oxide trihydroxylic alcohol, the polyoxy that the molecular weight of 5 mass parts is 300
Change propylene trihydroxylic alcohol, the Polyoxypropylene diol that the molecular weight of 6 mass parts is 4000, the molecular weight of 2 mass parts be 400 it is poly-
Propylene oxide dihydroxylic alcohols, the nano-calcium carbonate of 15 mass parts, 400 mesh ground calcium carbonate of 35 mass parts, the gas phase two of 3 mass parts
Silicon oxide, the 3A molecular sieve activation powder of 2 mass parts, the titanium dioxide of 2 mass parts, γ-(2,3- the third oxygen of epoxy) propyl group of 1 mass parts
The stannous octoate of trimethoxy silane and 0.01 mass parts is fully mediated uniformly, and sampling viscosimetric is 22Pas.This is double-component
First component of polyurethane group angle glue.
Raw material is taken as B component by following proportionings：
By the polymethylene multi-phenenyl isocyanate of 40 mass parts, 400 mesh ground calcium carbonate of 55 mass parts, 5 mass parts
Aerosil mediated, that is, be obtained the two-component polyurethane corner sealant obtain the second component.Sampling viscosimetric is
20Pa·s
Compounding：First component and second component are pressed into 0.8～1.2: 0.8～1.2 mass ratio or 1: 1 body
After product is than mixing, that is, obtain two-component polyurethane corner sealant.
Two-component Waterproof Polyurethane Coating A, B component viscosity obtained by embodiment of the present invention 1-3 is than relatively low, about 4000-
6000mPa.s or so, but after A, B component mix 5-8min according to a certain percentage, static viscosity in 5-8min in it is rapid on
Tens times are risen, after stopping stirring, paste compound is formed, viscosity is rapidly reduced to 6000mPa.s or so after gentle agitation, has
Good workability, elevation construction, once the thick 1-1.5mm that applies do not trickle substantially, so as to solve existing two component polyurethane
Water-repellent paint elevation construction trickles, it is difficult to a difficult problem for upper thickness, and can reduce waste of material, improves efficiency of construction and construction matter
Amount.
Multidigit has been organized to use the said goods same in the skilled craftsman that coating application field works more than 5 years respectively
Experimental architecture thing vertical wall surface has carried out site operation, draws the following conclusions：Polyurethane water-proof obtained by embodiment 1-3
Coating gentle agitation when in use, under stirring smearing state, viscosity rapidly reduces 70-80%, can be light under this dynamic viscosity
Easily construct the high viscosity recovered after the completion of vertical wall surface, construction rapidly to static state, effectively solving elevation construction
Trickling problem.Using this coating, 1.5-2mm can be brushed 2-3 time, so as to solve existing polyurethane water-proof paint elevation construction stream
Drop down, it is difficult to a difficult problem for upper thickness, and effectively reduce waste of material, improve efficiency of construction and construction quality.
Using the product of comparative example, 3-4 is capable of achieving all over brushing 1.5-2mm and overcomes the effect of elevation construction trickling problem
Really, but the product remains the high viscosity (the slightly below static viscosity of embodiment 1-3 product) under static state in work progress,
Constructor's operation that either product is taken out from Raw material pail or is applied on wall in work progress is both needed to expend larger
Labour force and longer time, high labor intensive.Statistics finds, relative to the mono-component polyurethane waterproof obtained by embodiment 1-3
Coating, the product of comparative example with workman's amount of labour and man-hour calculation, about at 5 times or so.
Claims (7)
1. a kind of two-component chemical reacts thixotropic polyurethane water-proof paint, for elevation construction, it is characterised in that by A, B two
Component is constituted, and wherein component A includes isocyanates 20-40 weight portions, polyether polyol 20-50 weight portion, plasticizer 5-15 weights
Amount part and high performance adjuvant 0-1 weight portions；B component includes polyether polyol 20-40 weight portion, chain extender 5-30 weight portions, increasing
Modeling agent 5-20 weight portions, polymerization inhibitor 0.1-1 weight portions, amine reactant 0.1-1 weight portions, catalyst 0.2-1 weight portions, face are filled out
Material 20-40 weight portions, solvent 5-20 weight portions, high performance adjuvant 0.1-1 weight portions；Wherein, polymerization inhibitor is orthophosphoric acid, winestone
Acid, Benzenecarbonyl chloride., one or more the mixture in benzoic acid；Amine reactant is polyethers diamine, small molecule two
One or more mixture in first amine, polyamide and phenolic aldehyde amine, isocyanates be selected from toluene di-isocyanate(TDI) or
Methyl diphenylene diisocyanate；The two-component chemical reaction thixotropic polyurethane water-proof paint is prepared with following step：A groups
Point：A. in reaction vessel, add the polyether polyol of 20-50 weight portions, stirring to be warmed up to 100 DEG C -130 DEG C, under vacuum condition
Dehydration 2～3 hours；B. 60 DEG C -80 DEG C are reduced the temperature to, 20-40 weight portion isocyanates is added, in 60-100 DEG C of stirring
Under, react 2～3 hours；C. 50 DEG C -60 DEG C are reduced the temperature to, 5-15 parts by weight of plasticizer and 0-1 weight portion high-performance is added
Auxiliary agent, is cooled to 30 DEG C of -40 DEG C of nitrogen filled protections, and discharging obtains component A；B component：A. in reaction vessel add 20-40 weight
The polyether polyol of part, the chain extender of 5-30 weight portions, the plasticizer of 5-20 weight portions, the color stuffing of 20-40 weight portions, stirring
100 DEG C -130 DEG C are warmed up to, are dehydrated 2～3 hours under vacuum condition；B. 50 DEG C -60 DEG C are reduced the temperature to, 0.2-1 weight is added
Part catalyst, the polymerization inhibitor of 0.1-1 weight portions, the amine reactant of 0.1-1 weight portions, 0.1-1 weight portion high performance adjuvants, 5-
20 parts by weight solvent, stirring 1-2 hours, after being uniformly dispersed, are cooled to 30 DEG C of -40 DEG C of nitrogen filled protections, and discharging obtains B component.
2. polyurethane water-proof paint according to claim 1, it is characterised in that polyether polyol selected from PPG class polyether polyol,
One or more the mixture that POP birdss of the same feather flock together in compound polyether polyol, PTMEG class polytetramethylene oxide polyhydric alcohol.
3. polyurethane water-proof paint according to claim 1, it is characterised in that chain extender is binary amine chain extender, di-alcoholss
One or more mixture of chain extender, alcaminess chain extender.
4. polyurethane water-proof paint according to claim 1, it is characterised in that plasticizer is selected from for dioctyl phthalate, neighbour
One or more in phthalic acid dibutyl ester, diisononyl phthalate, chlorinated paraffin, citric acid ester plasticizer
Mixture.
5. polyurethane water-proof paint according to claim 1, it is characterised in that catalyst is selected from dibutyl tin laurate, octanoic acid
Stannous, isooctyl acid lead organo-metallic catalyst or fatty amines, alicyclic ring amine, aromatic amine and alcaminess and its ammonium salt class chemical combination
One or more mixture of thing catalyst.
6. polyurethane water-proof paint according to claim 1, it is characterised in that solvent is toluene, dimethylbenzene, solvent naphtha, acetic acid second
One or more mixture in ester, butyl acetate.
7. polyurethane water-proof paint according to claim 1, it is characterised in that color stuffing is white carbon black, titanium dioxide, iron oxide yellow, kaolinite
One or more mixed in soil, cement, triple superphosphate, barium sulfate, magnesium oxide, calcium oxide, wollastonite, silicon powder, Pulvis Talci
Compound.
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| CN105038565A (en) * | 2015-08-18 | 2015-11-11 | 北京东方雨虹防水技术股份有限公司 | Bi-component polyurethane waterproof coating and preparation method thereof |
| CN105331274A (en) * | 2015-12-08 | 2016-02-17 | 上海台安实业集团有限公司 | Thixotropic bi-compound polyurethane waterproof paint capable of being constructed at high temperature and preparation method thereof |
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| CN112662302B (en) * | 2020-12-18 | 2022-04-12 | 黎明化工研究设计院有限责任公司 | Single-component polyurethane spraying material and preparation method and use method thereof |
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