CN110437716A - A kind of exposed conveying appliance polyurea water-proof repairs coating and its preparation and construction method - Google Patents
A kind of exposed conveying appliance polyurea water-proof repairs coating and its preparation and construction method Download PDFInfo
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- CN110437716A CN110437716A CN201910729892.1A CN201910729892A CN110437716A CN 110437716 A CN110437716 A CN 110437716A CN 201910729892 A CN201910729892 A CN 201910729892A CN 110437716 A CN110437716 A CN 110437716A
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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
- C09D175/02—Polyureas
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0296—Repairing or restoring facades
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Abstract
The invention discloses a kind of exposed conveying appliance polyurea water-proofs to repair coating and its preparation and construction method.It includes component A and B component that this exposed conveying appliance polyurea water-proof, which repairs coating,；Component A is grouped as by below group: polyaspartic ester resin, polyether polyamine, dispersing agent, plasticizer, defoaming agent, coupling agent, solid fillers, thixotropic agent, levelling agent；B component is curing agent；The mass ratio of component A and B component is (1.5~3): 1.Also disclose that this waterproof repairs the preparation method of coating, and the construction method of this coating of application simultaneously.Exposed conveying appliance polyurea water-proof of the invention, which repairs coating, has excellent weather resistance and sealing performance, and unharmful substance volatilization, is not removed, is firmly bonded non yellowing.Without chiselling basal plane when this coating application, sprayable or artificial blade coating quickly and efficiently, the thorough durable, Environmental Safety of waterproof can be applied to newly-built waterproofing work and house repairing engineering.
Description
Technical field
The invention belongs to waterproof material technical fields, and in particular to a kind of exposed conveying appliance polyurea water-proof repairs coating and its preparation
With construction method.
Background technique
Leakage of building rate is high at present, according to authentic data whole nation roof leakage rate 95%, so that leakage of building is repaired
Copying will be or already as the important content of building repair.For leakage is repaired, the waterproof of a excellent combination property is repaired
Material of copying is the key that treating seepage.From the point of view of material is repaired with regard to current waterproof, it is primarily present that durability is poor and basal plane cohesive force
Difference (easily peelable delamination and lead to channeling water), cannot exposed (UV resistant performance is poor), finally occur as soon as delamination in a short time, open
The problems such as splitting, or even leaking again is commonplace；In addition, it is desirable to thoroughly administer leakage problems, it is mating that most waterproofs repair material institute
Arrangement and method for construction needs chisel, i.e., by finish coat or other techonospheres chisel removing after do waterproof again, lead to long in time limit, cost
High, a series of problems, such as noise vibration disturbs residents, structure is impacted safely, waste pollution is big；Furthermore though Polyurea Spraying material
Material performance is good but it needs to carry out spraying by bulky special equipment to construct, and be only applicable to large-scale construction project, no
It is suitble to small section or small range to repair work.
On the other hand, environmental protection is the important topic of today's society, and common waterproof is repaired material and more or less existed
The discharges of the volatile substances such as discharge of poisonous waste, such as polyurethane coating solvent, modified pitch class waterproof roll and hot melt are non-solid
Change the discharge etc. of coating asphalt high-temperature volatile matter in construction.
Summary of the invention
Of the existing technology in order to overcome the problems, such as, one of the objects of the present invention is to provide a kind of exposed conveying appliance polyurea water-proofs
Coating is repaired, the second object of the present invention is to provide the preparation method that this exposed conveying appliance polyurea water-proof repairs coating, the present invention
The third purpose be to provide the construction method that this exposed conveying appliance polyurea water-proof repairs coating.
In order to achieve the above purpose, the technical solution used in the present invention is:
The present invention provides a kind of exposed conveying appliance polyurea water-proofs to repair coating.
It includes component A and B component that this exposed conveying appliance polyurea water-proof, which repairs coating,；Component A is by the component of following mass parts
Composition: 60~100 parts of polyaspartic ester resins, 0~20 part of polyether polyamine, 0.1~5 part of dispersing agent, 0.05~3 part of increasing
Mould agent, 0.1~5 part of defoaming agent, 1~10 part of coupling agent, 5~15 parts of solid fillers, 0.5~5 part of thixotropic agent, 0.05~2 part of stream
Flat agent；B component is curing agent；The mass ratio of component A and B component is (1.5~3): 1.
Preferably, the component A that this exposed conveying appliance polyurea water-proof repairs coating is grouped as by the group of following mass parts: 75~
95 parts of polyaspartic ester resins, 0~10 part of polyether polyamine, 0.1~3 part of dispersing agent, 0.1~1.5 part of plasticizer, 0.1
~2 parts of defoaming agents, 1~5 part of coupling agent, 5~10 parts of solid fillers, 0.5~3 part of thixotropic agent, 0.1~1 part of levelling agent；Further
Preferably, the component A that this exposed conveying appliance polyurea water-proof repairs coating is grouped as by the group of following mass parts: 80~95 parts of poly- days
L-aminobutanedioic acid ester resin, 0~10 part of polyether polyamine, 0.1~0.5 part of dispersing agent, 0.1~0.5 part of plasticizer, 0.1~0.3 part
Defoaming agent, 1.5~3 parts of coupling agents, 8~9 parts of solid fillers, 0.5~1 part of thixotropic agent, 0.2~0.5 part of levelling agent.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and the mass ratio of component A and B component is 2:1 (when use
Mixing mass ratio).
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, the structural formula of polyaspartic ester resin such as formula (1)
It is shown:
In formula (1), X indicates aliphatic group or alicyclic hydrocarbon radical；R1、R2、R3、R4It independently indicates unsubstituted alkyl, take
The alkyl or halogen in generation；Halogen is preferably F.
This exposed conveying appliance polyurea water-proof is repaired in coating, and the preparation method of polyaspartic ester resin is, will be alicyclic
Primary diamines or aliphatic primary diamines carry out addition (Michael addition) with dialkyl maleate and react, and obtain poly-aspartic
Acid ester resin；Wherein, cycloaliphatic primary diamines can be selected from 4,4 '-diamino-dicyclohexyl methanes, 3,3 '-dimethyl -4,4 '-diaminos
At least one of base dicyclohexyl methyl hydride；Aliphatic primary diamines can be selected from hexamethylene diamine；Dialkyl maleate is optional
From at least one of diethyl maleate, dibutyl maleate.
In the preparation method of this polyaspartic ester resin, primary diamines compound (cycloaliphatic primary diamines or aliphatic
Primary diamines) it with the molar ratio of dialkyl maleate is (2~2.5): 1, preferably 2:1.
In the preparation method of this polyaspartic ester resin, the temperature of reaction is 90 DEG C~100 DEG C, the time of reaction
For 10h~15h.
It further include that catalyst is added to participate in reaction in the preparation method of this polyaspartic ester resin；Catalyst
Dosage accounts for reaction raw materials (primary diamines compound and dialkyl maleate) gross mass 0.02%~0.05%；Catalyst can be selected from
At least one of sodium methoxide, sodium ethoxide, sodium hydroxide, dibutyltin dilaurate, Dibutyltin oxide, proline.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and polyether polyamine is polyether diamine, in polyethers triamine
It is at least one；It is further preferred that polyether polyamine be polytetramethylene ether diamine, polyetheramine D230, polyoxy propyl diamines,
At least one of polyoxy propyl triamine.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and the mass parts of polyether polyamine are not 0, i.e., containing poly-
This component of ether polyamine.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and dispersing agent is double octadecyl methyl tertiary amines, hexadecane
At least one of base dimethyl tertiary amine.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and plasticizer is butyl oleate, phthalic acid two is pungent
At least one of ester, dibutyl phthalate, diisononyl phthalate, diisooctyl phthalate；Further
Preferably, plasticizer is at least one of butyl oleate, dioctyl phthalate, dibutyl phthalate.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and defoaming agent is organic silicon defoamer, in polyether antifoam agent
At least one.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and coupling agent is vinyl-based silane coupling agent, chlorocarbon base
One type of silane coupling agent, ammonia alkyl one type of silane coupling agent, epoxyhydrocarbyl one type of silane coupling agent, methacryloxypropyl alkyl one type of silane are even
Join at least one of agent, sulfur-bearing alkyl one type of silane coupling agent, pseudohalogen one type of silane coupling agent, quaternary ammonium hydrocarbon silanes coupling agent；
It is further preferred that coupling agent is selected from A150, A151, A171, A172, WD-30, WD-31, WD-40, WD-42, WD-62, WD-
71, one of WD-80, WD-81, KH550, KH560, KH570, KH580, KH791, Z-6032 or a variety of.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and solid fillers are activated Calcium carbonate, titanium dioxide, sulfuric acid
At least one of barium, talcum powder, mica powder, kaolin；It is further preferred that solid fillers be activated Calcium carbonate, titanium dioxide,
At least one of barium sulfate, talcum powder, kaolin；Still further preferably, solid fillers are activated Calcium carbonate, in titanium dioxide
One or two.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and thixotropic agent is bentonite, fumed silica, gas phase
At least one of zinc oxide, gaseous oxidation aluminium, zinc stearate, carbon black, graphene, nanoclay, nano-cellulose；Further
Preferably, thixotropic agent is at least one of bentonite, fumed silica, zinc stearate.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and levelling agent is silicone levelling agent, polyacrylate
At least one of class levelling agent.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in coating, and curing agent is XDI (phenylenedimethylidyne diisocyanate
Ester), XDI performed polymer, TMDI (trimethyl -1,6- hexamethylene diisocyanate), TMDI performed polymer, HDI (oneself two isocyanides of 1,6-
Acid esters) tripolymer, polyether-modified HDI trimer, polyester modification HDI trimer, IPDI (isophorone diisocyanate) trimerization
At least one of body, polyether-modified IPDI tripolymer, polyester modification IPDI tripolymer；It is further preferred that curing agent is poly-
The polyisocyanate trimer of ether or polyester modification is selected from polyether-modified HDI trimer, polyester modification HDI trimer, polyethers
At least one of modified IPDI tripolymer, polyester modification IPDI tripolymer；Still further preferably, curing agent changes selected from polyethers
One of property HDI trimer, polyether-modified IPDI tripolymer or combinations thereof object；When curing agent is selected from polyether-modified HDI trimerization
When body and polyether-modified IPDI tripolymer composition, the mass ratio of polyether-modified HDI trimer and polyether-modified IPDI tripolymer
For 1:(1.5~3).
The present invention also provides the preparation methods that above-mentioned exposed conveying appliance polyurea water-proof repairs coating.This exposed conveying appliance polyurea water-proof
Repair the preparation method of coating, comprising the following steps:
1) polyaspartic ester resin and polyether polyamine are mixed, adds dispersing agent, plasticizer, defoaming agent, idol
Join agent, solid fillers, thixotropic agent and levelling agent to be uniformly mixed, sieving or grinding obtain component A；
2) using curing agent as B component, component A and B component are mixed, exposed conveying appliance polyurea water-proof is obtained and repairs coating.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in the preparation method step 1) of coating, is sieved or is ground to fineness
For 80~120 mesh；It is further preferred that being sieved or be ground to fineness is 100 mesh.
Preferably, this exposed conveying appliance polyurea water-proof is repaired in the preparation method step 2) of coating, is changed using polyethers or polyester
The polyisocyanate trimer of property is as B component.
This exposed conveying appliance polyurea water-proof is repaired in the preparation method step 2) of coating, when using the more of polyethers or polyester modification
When isocyanate trimer is as B component, the preparation method of B component is: by polyisocyanate trimer and polyether polyol or
Polyester polyol reaction, obtains B component；Wherein, the NCO group of polyisocyanate trimer is more with polyether polyol or polyester
OH group in first alcohol, the molar ratio (1.8~2.2) of-NCO/-OH: 1, preferably 2:1.Be heated in preparation process 80 DEG C~
It 90 DEG C, keeps the temperature and discharges when being less than the 8% of reaction mass gross mass to NCO group.
The present invention also provides the construction methods that above-mentioned this exposed conveying appliance polyurea water-proof repairs coating.This exposed conveying appliance polyureas
The construction method of waterproof repairerment coating, comprising the following steps:
1) polishing dust removal process is carried out to formation level, without chiselling basal plane；
2) the first brushing base treatment agent on step 1) treated basal plane, then brushes above-mentioned exposed conveying appliance polyurea water-proof
Coating is repaired as floating coat, then brushes above-mentioned exposed conveying appliance polyurea water-proof and repairs coating as finishing coat.
This exposed conveying appliance polyurea water-proof repairs the construction method step 1 of coating) in, formation level is carried out at polishing dedusting
Reason is to carry out at normal temperature.By carrying out polishing dust removal process to formation level, be conducive to the bonding of base treatment agent.
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, base treatment agent and basal plane
Bonding force is not less than 2.5MPa.
This exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, base treatment agent is the common of this field
Inorganic agent such as can be selected from the dedicated base treatment agent of epoxy resin or other kinds of interfacial agents.
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, after brushing floating coat, solidification
6~8 hours, then brushing finishing coat；Solidification is to spontaneously dry at normal temperature.
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, the coating application of floating coat
Amount is 1.2kg/m2~1.8kg/m2；It is further preferred that the coating application amount of floating coat is 1.4kg/m2~1.6kg/m2。
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, the coating application of finishing coat
Amount is 0.5kg/m2~0.8kg/m2；It is further preferred that the coating application amount of finishing coat is 0.6kg/m2~0.8kg/m2。
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, floating coat with a thickness of
0.8mm~1.0mm；Finishing coat with a thickness of 0.2mm~0.5mm；Floating coat and the total coating layer thickness of finishing coat be 1.0mm~
1.5mm。
Preferably, this exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, 3 are conserved after brushing finishing coat
~7 days.
This exposed conveying appliance polyurea water-proof of the present invention repairs the construction method step 2 of coating) in, floating coat and finishing coat are set
A point purpose for time brushing is played, gap perforation is advantageously reduced, prevents from once brushing blocked up lead to the problem of.Floating coat has
The effect formed a connecting link, is important transition zone；Its not only can with secure bond basal plane, but also give foundation base one it is smooth and rich
The basal plane of splendid compatibility；Assign entire coating certain thickness simultaneously.Finishing coat, which primarily serves, promotes that coating is wear-resisting, wearability
Effect.
This exposed conveying appliance polyurea water-proof repairs the construction method step 2 of coating) in, without protection of constructing on finishing coat
Layer or protective layer；In some specific embodiments, according to the actual needs, can also on finishing coat brushing anti-slip layer,
Anti-slip layer is to mix quartz sand in finishing coat, brushes, plays the role of anti-skidding together.
The beneficial effects of the present invention are:
Exposed conveying appliance polyurea water-proof of the invention, which repairs coating, has excellent weather resistance and sealing performance, no nocuousness
Substance volatilization, is not removed, is firmly bonded non yellowing.Without chiselling when exposed conveying appliance polyurea water-proof of the invention repairs coating application
Basal plane, sprayable or artificial blade coating quickly and efficiently, the thorough durable, Environmental Safety of waterproof can be applied to newly-built waterproofing work and room
Room renovation project.
Specifically, exposed conveying appliance polyurea water-proof of the invention repairs coating after construction, and material can be long-term with water and air
Contact not dusting is not cracked, non yellowing, not delamination drum, is firmly bonded anti-channeling water with basal plane, leakage repairerment effect is found pole and seen
Shadow, and there is excellent Low temperature-resistanflexible flexible, heat-resistant stable, wearability, soda acid characteristic, it is firm durable.The material can be used
Artificial blade coating or light-weight electric flush coater spraying operation, construction safety, efficiently influence surrounding enviroment minimum.Of the invention applies
Work process distinction does not chisel basal plane in common material Restoration Techniques, and curing rate is relatively fast, when reducing working face occupancy
Between, repair short time limit, treating seepage significant effect.It is to be applied to newly-built waterproof that exposed conveying appliance polyurea water-proof of the invention, which repairs coating,
One of engineering and house repairing engineering high-quality, high performance water proof material.
Specific embodiment
The contents of the present invention are described in further detail below by way of specific embodiment.Original used in embodiment
Material unless otherwise specified, can be obtained from routine business approach.Preparation or processing method in embodiment unless otherwise specified,
For the conventional method of this field.
Paint Examples 1
A kind of exposed conveying appliance polyurea water-proof repairerment coating, carries out mixing preparation use with A and two components of B when using, presses
The composition of mass parts meter, A and B are respectively as follows:
Component A:
80 parts of polyaspartic ester resin；
10 parts of polyether polyamine；
0.2 part of dispersing agent；
0.7 part of thixotropic agent；
2.0 parts of coupling agent；
0.1 part of defoaming agent；
0.3 part of plasticizer；
0.2 part of levelling agent；
8.5 parts of titanium dioxide.
B component: polyether-modified HDI trimer.
Polyether polyamine used is polyetheramine D230；Dispersing agent is double octadecyl methyl tertiary amines；Thixotropic agent is gas phase
Silica；Coupling agent is KH550；Defoaming agent is organic silicon defoamer；Plasticizer is dioctyl phthalate；Levelling agent is
Polyacrylate levelling agent.
Component A is uniformly mixed with B component by the quality proportioning of 2:1, the exposed conveying appliance polyurea water-proof for obtaining this example, which is repaired, to be applied
Material.
Polyaspartic ester resin syntheses processes in component A, count by molar, raw material proportioning is as follows:
4,4 ' -2 parts of diamino-dicyclohexyl methanes；
1 part of diethyl maleate；
Catalyst 0.05% (mass percent)；
Catalyst used is sodium ethoxide；
Above-mentioned raw materials are sequentially added in four-hole boiling flask, inflated with nitrogen, be warming up to 95 DEG C, keeps the temperature cooling discharging after 12h.
Component A the preparation method comprises the following steps: under room temperature, by resulting polyaspartic ester resin, polyether polyamine, dispersion
Agent, thixotropic agent, coupling agent, defoaming agent, plasticizer, levelling agent, titanium dioxide sequentially add in four-hole boiling flask in order, are sufficiently stirred
It discharges after being ground to 100 mesh after being uniformly dispersed.
The raw material for preparing of B component includes HDI trimer and polyether Glycols；Wherein, the NCO group of HDI trimer and poly-
OH group in ether dihydric alcohol, the molar ratio of-NCO/-OH are 2:1.
B component the preparation method comprises the following steps: under room temperature, HDI trimer is added in four-hole boiling flask, is then dripped polyether Glycols
Enter in flask, 85 DEG C are heated to after being added dropwise to complete, is discharged when heat preservation to-NCO% is less than 8%.
Paint Examples 2
A kind of exposed conveying appliance polyurea water-proof repairerment coating, carries out mixing preparation use with A and two components of B when using, presses
The composition of mass parts meter, A and B are respectively as follows:
Component A:
B component: polyether-modified HDI trimer.
A, the raw material used in B component is identical as embodiment 1, equally mixes component A and B component by the quality proportioning of 2:1
Close the exposed conveying appliance polyurea water-proof repairerment coating for uniformly obtaining this example.
Component A the preparation method comprises the following steps: under room temperature, by polyaspartic ester resin, dispersing agent, thixotropic agent, coupling agent, disappear
Infusion, plasticizer, levelling agent, titanium dioxide sequentially add in four-hole boiling flask in order, are sufficiently stirred after being uniformly dispersed and are ground to 100
It discharges after mesh.
The preparation method of B component is same as Example 1.
The difference of this example component A and embodiment 1 is only that embodiment 1 contains polyether polyamine, and this example is more without containing polyethers
First amine.
Paint Examples 3
A kind of exposed conveying appliance polyurea water-proof repairerment coating, carries out mixing preparation use with A and two components of B when using, presses
The composition of mass parts meter, A and B are respectively as follows:
Component A:
80 parts of polyaspartic ester Resin A；
15 parts of polyaspartic ester resin B；
0.5 part of dispersing agent；
0.5 part of thixotropic agent；
1.5 parts of coupling agent；
0.3 part of defoaming agent；
0.1 part of plasticizer；
0.5 part of levelling agent；
8.0 parts of titanium dioxide.
B component: polyether-modified IPDI tripolymer.
Polyether polyamine used is polyetheramine D230；Dispersing agent is hexadecyldimethyl benzyl ammonium tertiary amine；Thixotropic agent is swelling
Soil；Coupling agent is KH570；Defoaming agent is organic silicon defoamer；Plasticizer is dibutyl phthalate；Levelling agent is polypropylene
Esters of gallic acid levelling agent.
Component A is uniformly mixed with B component by the quality proportioning of 2:1, the exposed conveying appliance polyurea water-proof for obtaining this example, which is repaired, to be applied
Material.
Polyaspartic ester Resin A synthetic method, counts by molar in component A, and raw material proportioning is as follows:
4,4 ' -2 parts of diamino-dicyclohexyl methanes；
1 part of diethyl maleate；
Catalyst 0.05% (mass percent)；
Catalyst used is sodium ethoxide；
Above-mentioned raw materials are sequentially added in four-hole boiling flask, inflated with nitrogen, be warming up to 95 DEG C, keeps the temperature cooling discharging after 12h.
The synthetic method of polyaspartic ester resin B, counts by molar in component A, and raw material proportioning is as follows:
2 parts of 3,3 '-dimethyl -4,4 '-diamino-dicyclohexyl methane；
1 part of diethyl maleate；
Catalyst 0.05% (mass percent)；
Catalyst used is sodium ethoxide；
Above-mentioned raw materials are sequentially added in four-hole boiling flask, inflated with nitrogen, be warming up to 95 DEG C, keeps the temperature cooling discharging after 12h.
Component A the preparation method comprises the following steps: under room temperature, by resulting polyaspartic ester Resin A, polyaspartic ester tree
Rouge B, dispersing agent, thixotropic agent, coupling agent, defoaming agent, plasticizer, levelling agent, titanium dioxide sequentially add in four-hole boiling flask in order,
It is sufficiently stirred after being uniformly dispersed after being ground to 100 mesh and discharges.
The raw material for preparing of B component includes IPDI tripolymer and polyether Glycols；Wherein, the NCO group of IPDI tripolymer with
OH group in polyether Glycols, the molar ratio of-NCO/-OH are 2:1.
B component the preparation method comprises the following steps: under room temperature, IPDI tripolymer is added in four-hole boiling flask, then by polyether Glycols
It instills in flask, 85 DEG C is heated to after being added dropwise to complete, is discharged when heat preservation to-NCO% is less than 8%.
Embodiment 1, embodiment 2, embodiment 3 coating corresponding to performance indicator and GB/T23446-2009 " spraying is poly-
Urea waterproof coating " standard technique index comparative situation is as shown in table 1.
Each embodiment technical indicator of table 1 and technical standard comparative situation
It can be seen that it fully meets the technology of spray polyurea waterproofing coating II type and wants from the technical indicator of embodiment 1-3
It asks, adhesion strength, tensile strength, cryogenic property, artificial weathering aging, wearability and impact resistance fully meet exposed anti-
Water repair material weather-proof, adhesion strength, in terms of technical requirements；Its gel time and surface drying time symbol
Close artificial required construction operation time requirement.
It is found by the comparison of embodiment 1 and embodiment 2, introducing polyether polyamine being capable of tearing strength to film layer, viscous
It plays a role in improving in terms of knotting strength and low temperature durability, while the introducing of polyether polyamine reduces being produced into for about 4-6%
This, all has positive effect for the performance and cost optimization of exposed conveying appliance polyureas.As it can be seen from table 1 compared to embodiment 2,
The introducing of polyether polyamine is so that coating tearing strength promotes about 15%；Resistance to low temperature promotes about 6%；Basal plane adhesion strength mentions
Rise about 11%.
In addition, selecting polyurea waterproof coating material obtained by embodiment 1, different construction methods is respectively adopted and compares.
The formation level of construction method is cement mortar basal plane below, is proportion 1:2.5 (mass ratio of cement and sand) cement bonded sand
Slurry, surface are received light and are smoothed out, and constant temperature and humidity maintenance 7 days spare.Base treatment agent and basal plane bonding force used is not less than 2.5MPa,
The dedicated base treatment agent of commercially available epoxy resin such as can be selected.
Construction embodiment
Coating application method of the invention, comprising the following steps:
1) polishing dust removal process is carried out to formation level, without chiselling basal plane；
2) the first brushing base treatment agent on step 1) treated basal plane, then the exposed conveying appliance polyureas of brushing embodiment 1
Waterproof repairs coating as floating coat, and after normal temperature cure 7 hours, then the exposed conveying appliance polyurea water-proof of brushing embodiment 1 repairs coating
As finishing coat, conserve 5 days.
Wherein, floating coat dosage is 1.5kg/m2, finishing coat dosage is 0.7kg/m2, the overall thickness of coating be 1.2mm~
1.5mm。
Construction Comparison example 1
The construction method of this example, comprising the following steps:
The first brushing base treatment agent directly on formation level, then the exposed conveying appliance polyurea water-proof of brushing embodiment 1 is repaired
Coating is as floating coat, and after normal temperature cure 7 hours, then the exposed conveying appliance polyurea water-proof of brushing embodiment 1 repairs coating as face painting
Layer conserves 5 days.Brushing dosage and coating layer thickness are identical as construction embodiment.
Construction Comparison example 2
The construction method of this example, comprising the following steps:
1) polishing dust removal process is carried out to formation level, without chiselling basal plane；
2) on step 1) treated basal plane first the exposed conveying appliance polyurea water-proof of brushing embodiment 1 repair coating be used as in apply
Layer, after normal temperature cure 7 hours, then the exposed conveying appliance polyurea water-proof of brushing embodiment 1 repairs coating as finishing coat, conserves 5 days.It applies
Brush dosage and coating layer thickness are identical as construction embodiment.
Construction Comparison example 3
The construction method of this example, comprising the following steps:
1) polishing dust removal process is carried out to formation level, without chiselling basal plane；
2) the first brushing base treatment agent on step 1) treated basal plane, then the exposed conveying appliance polyureas of brushing embodiment 1
Waterproof repairs coating as floating coat.Brushing dosage and coating layer thickness are identical as construction embodiment.
The test data that these different forms of construction work influence comparative analysis to material property is shown in Table 2.
The different forms of construction work of table 2 influence comparative analysis to material property
It can be seen that the cohesive force of base treatment and brushing base treatment agent all to material and basal plane from 2 correlation data of table
Large effect is generated, for leakage is repaired, basal plane not all can by special disposal, the base treatment agent that basal plane does not brush qualification
Lead to basal plane cohesive force degradation, basal plane cohesive force difference will lead to waterproof material and occur thin layer, alice, sky in use
The problems such as drum, channeling water, eventually leads to repairerment failure；And the matched construction method of the present invention is used, every key index can expire
Foot is even more than code requirement.
In addition, mainly influence ageing-resistant performance for surface layer, especially to water absorption rate, stretching strength retentivity, resistance to
Mill performance, impact resistance can all seriously affect.If not constructing finishing coat after floating coat of constructing, entire waterproof layer it is wear-resisting
Property, impact resistance and other ageing-resistant performances can all decline to a great extent, it is final to influence to repair effect and the quality guarantee time limit.
Construction method matched for the present invention, has following prominent characteristics:
One, it is chiselled without basal plane, specific advantage is as follows:
1. not chiselling each techonosphere such as former finish coat, protective layer, the disturbance during chiselling to original building structure is avoided
It is damaged with the destructiveness of concealment, conducive to the stabilization of original structure；
2. exempting to chisel, it is greatly shortened and repairs duration and repair cost, from the point of view of the real case of application, of the invention is applied
Work method reduces comprehensive repair cost about 25-35%；The reduction of repair cost main reason is that: 1) chisel labour cost and basal plane
Processing labour cost about reduces 80%-85%；2) solid waste allocation and transportation equipment, artificial and processing cost reduce by 95%；
3. exempting to chisel, the duration shortens 50% or so, in the case where not considering weather conditions, needs the room of completion in 15 days originally
Face renovation project, repairing material and construction method, 7 day time using waterproof of the invention can complete；
4. exempting to chisel, significantly reducing renovation project influences the noise of owner itself and periphery and vibration, can carry out ring
Border is friendly.
Two, beautiful to reduce repair cost simultaneously without protective layer of constructing, further increase construction efficiency
Polyurea waterproof coating material of the invention has just avoided xanthochromia gene from raw material type selecting and formula design aspect, simultaneously
Remain polyurea materials plurality of advantages.Imparting this material also can color inhibition, wear-resisting, resistance to punching in long-term exposed situation
It hits, the features such as cohesive force is strong；In addition this material can more colour match construction, it is both artistic and practical, be very suitable at leakage repairerment
Reason.
Three, by matching operation method of the invention, the cohesive force for repairing coating and basal plane is not less than 2.5MPa.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of exposed conveying appliance polyurea water-proof repairs coating, it is characterised in that: including component A and B component；
The component A is grouped as by the group of following mass parts: 60~100 parts of polyaspartic ester resins, 0~20 part of polyethers
Polyamine, 0.1~5 part of dispersing agent, 0.05~3 part of plasticizer, 0.1~5 part of defoaming agent, 1~10 part of coupling agent, 5~15 parts it is solid
State filler, 0.5~5 part of thixotropic agent, 0.05~2 part of levelling agent；
The B component is curing agent；
The mass ratio of component A and B component is (1.5~3): 1.
2. a kind of exposed conveying appliance polyurea water-proof according to claim 1 repairs coating, it is characterised in that: the polyether polyamine
For at least one of polyether diamine, polyethers triamine.
3. a kind of exposed conveying appliance polyurea water-proof according to claim 2 repairs coating, it is characterised in that: the polyether polyamine
Mass parts be not 0.
4. a kind of exposed conveying appliance polyurea water-proof according to claim 1 repairs coating, it is characterised in that: the dispersing agent is double
At least one of octadecyl methyl tertiary amine, hexadecyldimethyl benzyl ammonium tertiary amine.
5. a kind of exposed conveying appliance polyurea water-proof according to claim 1 repairs coating, it is characterised in that: the plasticizer is oil
Acid butyl ester, dioctyl phthalate, dibutyl phthalate, diisononyl phthalate, two isodecyl of phthalic acid
At least one of ester.
6. a kind of exposed conveying appliance polyurea water-proof according to claim 1 repairs coating, it is characterised in that: the coupling agent is second
Alkenyl one type of silane coupling agent, chlorocarbon base class silane coupling agent, ammonia alkyl one type of silane coupling agent, epoxyhydrocarbyl one type of silane coupling agent,
Methacryloxypropyl alkyls silane coupling agent, sulfur-bearing alkyl one type of silane coupling agent, pseudohalogen one type of silane coupling agent, quaternary ammonium hydro carbons
At least one of silane coupling agent.
7. a kind of exposed conveying appliance polyurea water-proof according to claim 1 repairs coating, it is characterised in that: the curing agent is
XDI, XDI performed polymer, TMDI, TMDI performed polymer, HDI trimer, polyether-modified HDI trimer, polyester modification HDI trimer,
At least one of IPDI tripolymer, polyether-modified IPDI tripolymer, polyester modification IPDI tripolymer.
8. a kind of exposed conveying appliance polyurea water-proof as described in any one of claim 1~7 repairs the preparation method of coating, feature exists
In: the following steps are included:
1) polyaspartic ester resin and polyether polyamine are mixed, add dispersing agent, plasticizer, defoaming agent, coupling agent,
Solid fillers, thixotropic agent and levelling agent are uniformly mixed, and sieving or grinding obtain component A；
2) using curing agent as B component, component A and B component are mixed, exposed conveying appliance polyurea water-proof is obtained and repairs coating.
9. the construction method that a kind of exposed conveying appliance polyurea water-proof repairs coating, it is characterised in that: the following steps are included:
1) polishing dust removal process is carried out to formation level, without chiselling basal plane；
2) the first brushing base treatment agent on step 1) treated basal plane, then brushing claim 1~7 is described in any item
Exposed conveying appliance polyurea water-proof repairs coating as floating coat, then the described in any item exposed conveying appliance polyurea water-proofs of brushing claim 1~7
Coating is repaired as finishing coat.
10. construction method according to claim 9, it is characterised in that: in the step 2), the coating application amount of floating coat
For 1.2kg/m2~1.8kg/m2；The coating application amount of finishing coat is 0.5kg/m2~0.8kg/m2。
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| CN111471380A (en) * | 2020-03-24 | 2020-07-31 | 上海赛内特新材料科技有限公司 | High-strength polyaspartic acid polyurea waterproof coating and preparation method thereof |
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| CN114835875A (en) * | 2022-06-02 | 2022-08-02 | 青岛沙木新材料有限公司 | High-performance sprayable polyurethane foam material and preparation method thereof |
| CN115926596A (en) * | 2022-12-16 | 2023-04-07 | 深圳市威尔地坪材料有限公司 | Development and application of polyurea waterproof material applied to outer wall protection |
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