CN107325709A - A kind of single-component moisture curing polyurethane water-repellent paint and preparation method thereof - Google Patents
A kind of single-component moisture curing polyurethane water-repellent paint and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—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
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—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
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
To overcome the problem of existing mono-composition poyurethane water-proof paint has storage material precipitation, tensile strength, heat resistance and loss of properties on aging, the invention provides a kind of single-component moisture curing polyurethane water-repellent paint, it is characterised in that including following component：PPG, isocyanates, filler, chain extender and solvent；The chain extender includes 1,6 hexylene glycols and glycerine.Meanwhile, the invention also discloses the preparation method of above-mentioned single-component moisture curing polyurethane water-repellent paint.The film tensile strength of single-component moisture curing polyurethane water-repellent paint that the present invention is provided formation is obviously improved, heat resistance and it is ageing-resistant be improved significantly.
Description
Technical field
The invention belongs to water-repellent paint technical field, and in particular to a kind of single-component moisture curing polyurethane water-repellent paint and its
Preparation method.
Background technology
Polyurethane water-proof paint is widely used in civilian and roofing and ground of industrial building due to its good water resistance
The engineering waterproofings such as lower engineering, municipal administration, bridge, dam, are also applied for the engineering waterproofings such as kitchen and bath, balcony, parking lot.Common poly- ammonia
Ester water-repellent paint includes Two-component Waterproof Polyurethane Coating and mono-composition poyurethane water-proof paint.
Easily there is the situation that dispensing is inaccurate or stirring is uneven in Two-component Waterproof Polyurethane Coating, so as to influence film
Solidification and water resistance, construction are inconvenient, and Two-component Waterproof Polyurethane Coating can if not being finished disposably after mixing
Solidification is produced, influence is used, cause to waste.
Oiliness mono-composition poyurethane water-proof paint is to be chemically reacted by isocyano with the moisture in air, in base
Layer surface polymerize to form tough and tensile, seamless, acid and alkali-resistance, the water-repellent paint of ageing-resistant elastic water-proof rubber membrane.China's building is anti-
Wide variety of mono-component polyurethane building water-proof paint in water construction, generally existing volatile solvent smell is big, and storage expects
The problem of now precipitating and store material surface skining；Simultaneously in some special dimensions, it is necessary to require water-repellent paint formation waterproof coating
With preferable tensile strength, heat resistance and ageing-resistant performance, and be difficult to reach will for existing mono-composition poyurethane water-proof paint
Ask.
The content of the invention
There is storage material precipitation, tensile strength, heat resistance and resistance to ag(e)ing for existing mono-composition poyurethane water-proof paint
Can be poor the problem of, the invention provides a kind of single-component moisture curing polyurethane water-repellent paint and preparation method thereof.
The technical scheme that present invention solution above-mentioned technical problem is used is as follows：
A kind of single-component moisture curing polyurethane water-repellent paint, including following component are provided：PPG, isocyanates,
Filler, chain extender and solvent；
The chain extender includes 1,6-HD and glycerine.
Alternatively, the polyurethane water-proof paint includes following components by weight percent：
26~30 parts of PPG, 5~7 parts of isocyanates, 26~42 parts of filler, 0.05~0.1 part of 1.6- hexylene glycols,
7~9 parts of 0.05~0.1 part of glycerine and solvent.
Alternatively, the PPG includes following components by weight percent：
4~6 parts of two 22~24 parts of functional group's PPGs and trifunctional PPG.
Alternatively, the isocyanates includes following components by weight percent：
4~5 parts of 1~2 part of toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate.
Alternatively, the filler includes following components by weight percent：6~14 parts of calcined kaolin and calcinated talc powder 20~28
Part.
Alternatively, the bulk specific weight of the calcined kaolin be 0.90~1.15 gram/cc, fineness be 1000~
1350 mesh, oil absorption is 50%~60%；The bulk specific weight of the calcinated talc powder is 1.20~1.30 grams/cc, carefully
Spend for 1000~1350 mesh, oil absorption is 22%~35%
Alternatively, the solvent includes dimethyl carbonate.
Alternatively, the polyurethane water-proof paint also includes plasticizer, chlorinated paraffin, catalyst, antioxidant and pigment
Powder；Wherein, the components by weight percent of the plasticizer, chlorinated paraffin, catalyst, antioxidant and pigment powder is：
4~6 parts of plasticizer, 17~20 parts of chlorinated paraffin, 0.15~0.3 part of catalyst, 0.5~1 part of antioxidant and face
0.3~0.8 part of feed powder end.
Alternatively, the plasticizer includes dibutyl phthalate, and the catalyst includes dibutyl tin laurate,
The antioxidant includes N, N- diphenyl-p-phenylenediamines.
The invention also discloses a kind of preparation method of single-component moisture curing polyurethane water-repellent paint, comprise the following steps：
The PPG measured is stirred and mixed, is stirred after input filler to well mixed, obtains compound, will be mixed
Close material and be ground filtering；
By the compound after grinding be warming up to 101 DEG C~110 DEG C, vacuum dehydration；
Vacuum environment is kept, the compound after dehydration is cooled down, isocyanates is added in compound, stirring reaction,
Different aggressiveness mixed liquor is obtained, chain extender stirring reaction is added, reaction temperature is 80 DEG C~85 DEG C, and the chain extender includes 1.6-
Hexylene glycol and glycerine；
65 DEG C~75 DEG C are cooled to after the completion of reaction, stirring solvent mixing is added, cooling obtains polyurethane water-proof paint, gone out
Expect barrelling, add nitrogen protection.
The single-component moisture curing polyurethane water-repellent paint provided according to the present invention, passes through the active group of the PPG
Active group-the NCO of group-OH and the isocyanates occurs polymerisation and obtains polyurethanyl group, and simultaneous reactions remainder-
NCO group be used for the reaction of moisture in air, and then promote the solidification of the polyurethane water-proof paint, the polyurethane after solidification is prevented
Water paint formation waterproof barrier.Wherein chain extender is used for anti-with a unreacted part in isocyanates-NCO group generation chain extension
Strand should be increased, while can be as the crosslinking points between different molecular, and then tensile strength is improved, inventor passes through
Many experiments are found, the combination of 1,6- hexylene glycols and glycerine is added in polyurethane water-proof paint as chain extender, Neng Gouyou
Effect improves tensile strength, heat resistance and the ageing-resistant performance of the water-repellent paint, thus it is speculated that be due to that glycerol carbon chain is shorter and contain
More-OH groups, and 1,6- hexylene glycol carbochain is longer and is respectively provided with-OH groups end to end, both composition complementaries, improve with it is different
The crosslinking points that cyanate is formed in netted three-dimensional structuring polymer so that the waterproof coating property of polyurethane water-proof paint formation is obtained
Great raising is arrived.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain
The present invention, is not intended to limit the present invention.
The invention discloses a kind of single-component moisture curing polyurethane water-repellent paint, including following component：It is PPG, different
Cyanate, filler, chain extender and solvent；
The chain extender includes 1,6-HD and glycerine.
Inventor is when carrying out the improvement of single-component moisture curing polyurethane water-repellent paint, by single-component moisture curing polyurethane
The isocyanates of different chain extenders, PPG and varying number functional group is added in the composition of water-repellent paint,
With the performance for the waterproof coating for testing correspondence polyurethane water-proof paint formation, by testing discovery repeatedly, applied in polyurethane water-proof
The combination of 1,6- hexylene glycols and glycerine is added in material as chain extender, the stretch-proof that can effectively improve the water-repellent paint is strong
Degree, heat resistance and ageing-resistant performance, thus it is speculated that be due to that glycerol carbon chain is shorter and containing more-OH groups, and 1,6- hexylene glycol
Carbochain is longer and is respectively provided with-OH groups end to end, and both composition complementaries improve and form netted stereochemical structure high score with isocyanates
Crosslinking points in son so that the waterproof coating property of water-repellent paint formation is greatly improved.
In some currently preferred embodiments of the present invention, the polyurethane water-proof paint includes following components by weight percent：
26~30 parts of PPG, 5~7 parts of isocyanates, 26~42 parts of filler, 0.05~0.1 part of 1.6- hexylene glycols,
7~9 parts of 0.05~0.1 part of glycerine and solvent.
It is furthermore preferred that the polyurethane water-proof paint includes following components by weight percent：
27~29 parts of PPG, 6~7 parts of isocyanates, 31~38 parts of filler, 1.6- hexylene glycols 0.07~0.09
8~9 parts of part, 0.07~0.09 part of glycerine and solvent.
In some currently preferred embodiments of the present invention, the PPG includes following components by weight percent：
4~6 parts of two 22~24 parts of functional group's PPGs and trifunctional PPG.
PPG is that main chain contains ehter bond (- R-O-R-), and end group or side base contain low more than 2 hydroxyls (- OH)
Polymers.Using low molecular weight polyols, polyamine or the compound containing active hydrogen is initiator ,-with oxyalkylene in catalyst
The lower ring-opening polymerisation of effect is formed.Oxyalkylene is mainly propylene oxide (expoxy propane), ethylene oxide (oxirane).
The PPG is combined using two functional group's PPGs and trifunctional PPG, with isocyanic acid
Ester reaction can form comparatively dense netted stereochemical structure, improve the skeleton material content of film forming.
In some currently preferred embodiments of the present invention, the isocyanates includes following components by weight percent：
4~5 parts of 1~2 part of toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate.
Wherein, the toluene di-isocyanate(TDI) uses TDI-80/20 (TDI, tolylene diisocyanate, toluene two
Isocyanates), consisting of the 2,6-TDI of 80% 2,4-TDI and 20%.
Modified methyl diphenylene diisocyanate (MDI) contains two active group isocyano-NCO；Toluene two is different
Cyanate (TDI) is also containing two active group isocyano-NCO.Active group isocyano-the NCO of isocyanates can be with
Active group hydroxyl-the OH of polyethers chemically reacts, and MDI activity it is higher, TDI's is active relatively low, it is mutually synthermal with
Under conditions of humidity, the present invention is by adjusting MDI and TDI ratio, so that when adjusting mono-composition poyurethane water-proof paint surface drying
Between and do solid work the time.
In some currently preferred embodiments of the present invention, the filler includes following components by weight percent：6~14 parts of calcined kaolin
With 20~28 parts of calcinated talc powder.
Calcined kaolin and calcinated talc powder are added in polyurethane water-proof paint as filler, coating can not only be reduced and consolidated
Volume contraction during change, improves wearability, the caking property of coating, reduces cost, moreover it is possible to make coating have good storage stable
Property and heat resistance.
When calcined kaolin and calcination of talc powder content very little when, the film strength of the polyurethane water-proof paint it is poor and
Film forming thickness is smaller, when calcined kaolin and too high calcination of talc powder content, then the composition of the polyurethane water-proof paint is not
It is stable, the phenomenons such as sedimentation, caking are easily produced, meanwhile, film strength is also adversely affected.
Inventor is by many experiments, and the sorting to calcined kaolin and calcinated talc powder has been carried out preferably, to cause
Preferable stability and film strength can be had concurrently by stating polyurethane water-proof paint, specifically, the packing ratio of the calcined kaolin
Weight is 0.90~1.15 gram/cc, and fineness is 1000~1350 mesh, and oil absorption is 50%~60%；The calcination of talc
The bulk specific weight of powder is 1.20~1.30 grams/cc, and fineness is 1000~1350 mesh, and oil absorption is 22%~35%.
In some currently preferred embodiments of the present invention, the solvent includes dimethyl carbonate, and dimethyl carbonate has preferable
Volatility, film remnants are few, can shorten the surface drying time of the polyurethane water-proof paint and do solid work the time, aromatic-free into
Point, there is hypotoxicity relative to existing toluene, dimethylbenzene equal solvent, and smell is small, it is to avoid harm is produced to human body.
In some currently preferred embodiments of the present invention, the polyurethane water-proof paint also includes plasticizer, chlorinated paraffin, urged
Agent, antioxidant and pigment powder；Wherein, the plasticizer, chlorinated paraffin, catalyst, antioxidant and pigment powder
Components by weight percent is：
4~6 parts of plasticizer, 17~20 parts of chlorinated paraffin, 0.15~0.3 part of catalyst, 0.5~1 part of antioxidant and face
0.3~0.8 part of feed powder end.
The plasticizer is used to improve the elongation at break and low-temperature bending after the polyurethane water-proof paint film forming
Can, while also being improved to tensile strength and tearing strength.
The chlorinated paraffin plays a part of certain plasticizer, it is preferred to use 52# chlorinated paraffins, molecular formula C15H26Cl7,
Viscosity：Within 300MPaS (50 DEG C), weak yellow liquid plays plasticising, reduction liquid material viscosity, improves film elongation at break
Effect.
The catalyst is used for the reaction rate for improving isocyanates and PPG, chain extender and moisture in air,
So as to shorten the reaction time, production efficiency is improved, while suppressing the generation of side reaction.
The addition of the antioxidant can improve the weatherability of film, and protection and anti-aging effect are played to film so that apply
Film is high by sun long-term irradiation physical and mechanical property conservation rate.
The pigment powder mainly plays a part of to change film color, and the pigment that the present invention is provided uses powder type, also
Certain filler effect can be played, so as to reduce the usage amount of filler, coating strength is improved.
Specifically, the plasticizer includes dibutyl phthalate, the catalyst includes dibutyl tin laurate,
The antioxidant includes N, N- diphenyl-p-phenylenediamines.
The invention also discloses a kind of preparation method of single-component moisture curing polyurethane water-repellent paint, comprise the following steps：
The PPG measured is stirred and mixed, is stirred after input filler to well mixed, obtains compound, will be mixed
Close material and be ground filtering；
Filler is scattered at a high speed through sand mill, does not have powder ball after grinding filtering, powder oil absorption is reached after saturation state, polyethers
Polyalcohol forms reticular polymer with isocyanates generation chemical reaction and takes off the powder list that oil absorption reaches saturation state
Member, intermolecular active force is bigger, will not produce precipitation.
By the compound after grinding be warming up to 101 DEG C~110 DEG C, vacuum dehydration；
Vacuum environment is kept, the compound after dehydration is cooled down, isocyanates is added in compound, stirring reaction,
Different aggressiveness mixed liquor is obtained, chain extender stirring reaction is added, reaction temperature is 80 DEG C~85 DEG C, and the chain extender includes 1.6-
Hexylene glycol and glycerine；
65 DEG C~75 DEG C are cooled to after the completion of reaction, stirring solvent mixing is added, cooling obtains polyurethane water-proof paint, gone out
Expect barrelling, add nitrogen protection.
Obtained polyurethane water-proof paint is uniform viscous body, no gel, caking；Dope viscosity：7000-8000cps(23
℃)；Modest viscosity, stable storing, blade coating and brushing resistance are small, good fluidity.
The engineering waterproofings such as roofing and underground engineering, municipal administration, bridge, dam suitable for civilian and industrial building, are also suitable
In engineering waterproofings such as kitchen and bath, balcony, parking lots.
The present invention is further detailed by the following examples.
Embodiment 1
The present embodiment is used to illustrate a kind of single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its preparation side
Method, including following operating procedure：
Step one：Feed intake mixed grinding
By the two functional group's PPGs, the trifunctional PPG of 5 parts by weight, 5 parts by weight of 23 parts by weight
Dibutyl phthalate, 18 parts by weight chlorinated paraffin successively vacuum suction mixing kettle in, 75 revs/min stirring 10 minutes extremely
It is well mixed, then the calcinated talc powder of 0.5 parts by weight pigment powder, the calcined kaolin of 13 parts by weight and 23 parts by weight is put into
In mixing kettle, wherein, calcined kaolin：Bulk specific weight：1.05 grams/cc, the mesh of fineness 1250, oil absorption 55%.Calcining
Talcum powder：Bulk specific weight：1.22 grams/cc, the mesh of fineness 1250, oil absorption 28%.85 revs/min of stirrings 15 minutes are to mixed
Close uniform, obtain compound.
Open membrane pump and compound is pumped into sand mill, control the flow of membrane pump, adjust the rotating speed of sand mill to 1200
Rev/min, compound is ground by sand mill and filtered.
In above-mentioned raw materials, two functional group PPG is selected from Shandong blue star Dong great Chemical Co., Ltd.s, described three
Functional group's PPG is selected from Shandong blue star Dong great Chemical Co., Ltd.s, and the calcined kaolin is selected from Guangzhou exhibition and flies chemical industry,
The calcinated talc powder is selected from Haicheng, and the dibutyl phthalate is selected from the Guangzhou rain court of a feudal ruler, and the chlorinated paraffin is selected from
The Guangzhou rain court of a feudal ruler.
Step 2：Metering heating dehydration
Ground compound is measured from reactor drain hole vacuum input reactor, 85 revs/min of stirring heatings
To 105 DEG C, dehydration 5 hours is vacuumized, vacuum degree control is more than -0.08MPa, 103 DEG C -105 DEG C of dehydration temperaturre.
Step 3：Isothermal reaction
After dehydration 5 hours, vacuum environment is kept, the compound in reactor is cooled with 75 revs/min of stirrings.
The methyl diphenylene diisocyanate of the toluene di-isocyanate(TDI) of 1.5 parts by weight and 4 parts by weight is inhaled by vacuum
Enter in dropping tank and mix.
Liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by toluene diisocyanate in dropping tank
Acid esters and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 minutes, then 85 turns/
Minute stirring reaction 2 hours, form different aggressiveness mixed liquor, adds the 1.6- hexylene glycols and 0.05 parts by weight of 0.05 parts by weight
Glycerine, stirring reaction 1 hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
In above-mentioned raw materials, the methyl diphenylene diisocyanate is selected from BASF, and the toluene di-isocyanate(TDI) is selected from
Three wells.
Step 4：Cooling dilution
Reaction 3 hours after, mixing speed is adjusted to 75 revs/min, by the different aggressiveness mixed liquor in reactor cool to
70 DEG C, speed of agitator is adjusted to 85 revs/min, and vacuum sucks the dimethyl carbonate of 8 parts by weight, is cooled to 60 DEG C.
Step 5：Catalytic reaction and vacuum defoamation
When being cooled to 60 DEG C, mixing speed is adjusted to 85 revs/min, and normal pressure is slowly added to the tin dilaurate two of 0.2 parts by weight
Butyl tin (Theil indices 18%) is stirred 5 minutes, stirring is adjusted into 75 revs/min, vacuumizing and defoaming 10 minutes is opened reactor and put
Air valve, allows reactor internal pressure to reach normal pressure, turns off vavuum pump.
Step 6：Discharge nitrogen packing
By polyurethane water-proof paint barrelling, plus nitrogen-sealed is packed, and pail pack is put upside down storage.
Obtained polyurethane water-proof paint is labeled as S1.
Embodiment 2
The present embodiment is used to illustrate a kind of single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its preparation side
Method, including most of operating procedure as described in Example 1, its difference are：
In step one, by two functional group's PPGs of 22 parts by weight, the trifunctional PPG of 6 parts by weight, 4
The dibutyl phthalate of parts by weight, 20 parts by weight chlorinated paraffin successively vacuum suction mixing kettle in, 75 revs/min stirring
Slided to well mixed, then by the calcining of 0.8 parts by weight pigment powder, the calcined kaolin of 14 parts by weight and 20 parts by weight within 10 minutes
In stone flour input mixing kettle.
Obtained polyurethane water-proof paint is labeled as S2.
Embodiment 3
The present embodiment is used to illustrate a kind of single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its preparation side
Method, including most of operating procedure as described in Example 1, its difference are：
In step one, by two functional group's PPGs of 24 parts by weight, the trifunctional PPG of 4 parts by weight, 6
The dibutyl phthalate of parts by weight, 17 parts by weight chlorinated paraffin successively vacuum suction mixing kettle in, 75 revs/min stirring
Slided to well mixed, then by the calcining of 0.3 parts by weight pigment powder, the calcined kaolin of 6 parts by weight and 28 parts by weight within 10 minutes
In stone flour input mixing kettle.
Obtained polyurethane water-proof paint is labeled as S3.
Embodiment 4
The present embodiment is used to illustrate a kind of single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its preparation side
Method, including most of operating procedure as described in Example 1, its difference are：
In step 3, liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by dropping tank
Toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 points
Clock, then 85 revs/min of stirring reactions 2 hours, form different aggressiveness mixed liquor, add 0.08 parts by weight 1.6- hexylene glycols and
The glycerine of 0.08 parts by weight, stirring reaction 1 hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
Obtained polyurethane water-proof paint is labeled as S4.
Embodiment 5
The present embodiment is used to illustrate a kind of single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its preparation side
Method, including most of operating procedure as described in Example 1, its difference are：
In step 3, liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by dropping tank
Toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 points
Clock, then 85 revs/min of stirring reactions 2 hours, form different aggressiveness mixed liquor, add the 1.6- hexylene glycols and 0.1 of 0.1 parts by weight
The glycerine of parts by weight, stirring reaction 1 hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
Obtained polyurethane water-proof paint is labeled as S5.
Comparative example 1
This comparative example is used for a kind of comparative illustration single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its system
Preparation Method, including most of operating procedure as described in Example 1, its difference are：
In step 3, liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by dropping tank
Toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 points
Clock, then 85 revs/min of stirring reactions 2 hours, form different aggressiveness mixed liquor, add the 1.6- hexylene glycols of 0.1 parts by weight, stir
Reaction 1 hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
Obtained polyurethane water-proof paint is labeled as D1.
Comparative example 2
This comparative example is used for a kind of comparative illustration single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its system
Preparation Method, including most of operating procedure as described in Example 1, its difference are：
In step 3, liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by dropping tank
Toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 points
Clock, then 85 revs/min of stirring reactions 2 hours, form different aggressiveness mixed liquor, add the glycerine of 0.1 parts by weight, stirring reaction 1
Hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
Obtained polyurethane water-proof paint is labeled as D2.
Comparative example 3
This comparative example is used for a kind of comparative illustration single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its system
Preparation Method, including most of operating procedure as described in Example 1, its difference are：
In step 3, liquid material temperature after dehydration drops to 80 DEG C, and speed of agitator is adjusted to 85 revs/min, by dropping tank
Toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate mixed liquor at the uniform velocity vacuum instill reactor, and the instillation time continues 30 points
Clock, then 85 revs/min of stirring reactions 2 hours, form different aggressiveness mixed liquor, add the 1.4- butanediols of 0.1 parts by weight, stir
Reaction 1 hour, reaction temperature is controlled at 80 DEG C -85 DEG C.
Obtained polyurethane water-proof paint is labeled as D3.
Comparative example 4
This comparative example is used for a kind of comparative illustration single-component moisture curing polyurethane water-repellent paint disclosed by the invention and its system
Preparation Method, by the polyurethane water-proof paint being commercially available, labeled as D4.
Performance test
Following performance test is carried out to the above-mentioned S1~S5 prepared and D1~D4：
Item detection is carried out according to the type A categories alignment requests of polyurethane water-proof paint mark GB/T19250-2013 I are performed；
Detect that the test method of test material preparation performs Test methods for building waterproof coatings GB/T16777-2008；
Limits of harmful substances detection method performs limits of harmful substances JC1066-2008 and indoor dress in building water-proof paint
Adorn limits of harmful substances GB/T18582 in finishing material interior wall coating；
Physical and mechanical property detection performs vulcanization rubber or the measure GB/ of thermoplastic elastomer tensile stress-strain performance
T528。
Obtained test result inserts table 1.
Table 1
The test result of comparative example 1~5 and comparative example 1~4 is understood, compared with prior art formula, using this hair
A kind of single-component moisture curing polyurethane water-repellent paint of bright preparation, with advantages below:
1st, excellent physical properties, the skeleton material content of film forming is high, elongation at break and low-temperature bending more preferably, tensile strength
It is higher with tearing strength, all remote super national standard.Physical properties index is more than the type of GB/T19250-2013 polyurethane water-proof paints I
Technical indicator.
2nd, with the addition of after catalyst, low temperature does solid work that hardening time is shorter, and microthermal climate can construct, can accelerating construction progress,
Shorten construction period, reduce construction cost.
3rd, it is environmentally friendly, environment-friendly plasticizer, environmentally friendly solvent, environmental protection catalyst are used in inventive formulation, without heavy metal, smell
It is small, it can be constructed in nonventilated environment, harmful substance meets polyurethane water-proof paint GB/T19250-2013 limits of harmful substances A
Class requirement.
4th, 1.6- hexylene glycols and glycerine be with the addition of as chain extender, by the generation reticular polymer that chemically reacts, applied
The tensile strength of film is obviously improved, heat resistance and it is ageing-resistant be improved significantly.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of single-component moisture curing polyurethane water-repellent paint, it is characterised in that including following component：PPG, isocyanide
Acid esters, filler, chain extender and solvent；
The chain extender includes 1,6-HD and glycerine.
2. single-component moisture curing polyurethane water-repellent paint according to claim 1, it is characterised in that the polyurethane water-proof
Coating includes following components by weight percent：
26~30 parts of PPG, 5~7 parts of isocyanates, 26~42 parts of filler, 0.05~0.1 part of 1.6- hexylene glycols, glycerine
0.05~0.1 part and 7~9 parts of solvent.
3. single-component moisture curing polyurethane water-repellent paint according to claim 2, it is characterised in that the PPG
Including following components by weight percent：
4~6 parts of two 22~24 parts of functional group's PPGs and trifunctional PPG.
4. single-component moisture curing polyurethane water-repellent paint according to claim 2, it is characterised in that the isocyanates bag
Include following components by weight percent：
4~5 parts of 1~2 part of toluene di-isocyanate(TDI) and methyl diphenylene diisocyanate.
5. single-component moisture curing polyurethane water-repellent paint according to claim 2, it is characterised in that the filler is included such as
Lower components by weight percent：20~28 parts of 6~14 parts of calcined kaolin and calcinated talc powder.
6. single-component moisture curing polyurethane water-repellent paint according to claim 5, it is characterised in that the calcined kaolin
Bulk specific weight be 0.90~1.15 gram/cc, fineness be 1000~1350 mesh, oil absorption be 50%~60%；It is described
The bulk specific weight of calcinated talc powder be 1.20~1.30 grams/cc, fineness be 1000~1350 mesh, oil absorption be 22%~
35%.
7. single-component moisture curing polyurethane water-repellent paint according to claim 2, it is characterised in that the solvent includes carbon
Dimethyl phthalate.
8. single-component moisture curing polyurethane water-repellent paint according to claim 2, it is characterised in that the polyurethane water-proof
Coating also includes plasticizer, chlorinated paraffin, catalyst, antioxidant and pigment powder；Wherein, the plasticizer, chlorinated paraffin,
The components by weight percent of catalyst, antioxidant and pigment powder is：
4~6 parts of plasticizer, 17~20 parts of chlorinated paraffin, 0.15~0.3 part of catalyst, 0.5~1 part of antioxidant and pigment powder
0.3~0.8 part of end.
9. single-component moisture curing polyurethane water-repellent paint according to claim 8, it is characterised in that the plasticizer includes
Dibutyl phthalate, the catalyst includes dibutyl tin laurate, and the antioxidant includes N, N- diphenyl-right
Phenylenediamine.
10. a kind of preparation method of single-component moisture curing polyurethane water-repellent paint, it is characterised in that comprise the following steps：
The PPG measured is stirred and mixed, is stirred after input filler to well mixed, compound is obtained, by compound
It is ground filtering；
By the compound after grinding be warming up to 101 DEG C~110 DEG C, vacuum dehydration；
Vacuum environment is kept, the compound after dehydration is cooled down, isocyanates is added in compound, stirring reaction is obtained
Different aggressiveness mixed liquor, adds chain extender stirring reaction, and reaction temperature is 80 DEG C~85 DEG C, the chain extender include 1.6- oneself two
Alcohol and glycerine；
65 DEG C~75 DEG C are cooled to after the completion of reaction, stirring solvent mixing is added, cooling obtains polyurethane water-proof paint, discharging dress
Bucket, adds nitrogen protection.
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| CN109181509A (en) * | 2018-07-16 | 2019-01-11 | 酷泰克保温科技江苏有限公司 | A kind of insulating protective layer carbamide paint |
| CN110204680A (en) * | 2019-05-30 | 2019-09-06 | 江苏凯伦建材股份有限公司 | A kind of mono-component polyurethane floor material and its preparation method and application with water-proof function |
| CN111057216A (en) * | 2019-12-31 | 2020-04-24 | 安徽三棵树涂料有限公司 | Single-component non-flammable polyurethane fireproof coating and preparation method thereof |
| CN111057461A (en) * | 2019-12-24 | 2020-04-24 | 周口师范学院 | Preparation method of novel single-component water-curing polyurethane waterproof coating |
| CN112552477A (en) * | 2020-12-09 | 2021-03-26 | 黎明化工研究设计院有限责任公司 | Single-component self-curing high-strength polyurethane elastomer and preparation method thereof |
| CN117025080A (en) * | 2023-08-07 | 2023-11-10 | 德州科顺建筑材料有限公司 | Polyurethane waterproof coating and preparation method thereof |
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| CN109181509A (en) * | 2018-07-16 | 2019-01-11 | 酷泰克保温科技江苏有限公司 | A kind of insulating protective layer carbamide paint |
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| CN111057216A (en) * | 2019-12-31 | 2020-04-24 | 安徽三棵树涂料有限公司 | Single-component non-flammable polyurethane fireproof coating and preparation method thereof |
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| CN112552477A (en) * | 2020-12-09 | 2021-03-26 | 黎明化工研究设计院有限责任公司 | Single-component self-curing high-strength polyurethane elastomer and preparation method thereof |
| CN117025080A (en) * | 2023-08-07 | 2023-11-10 | 德州科顺建筑材料有限公司 | Polyurethane waterproof coating and preparation method thereof |
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Application publication date: 20171107 |