CN110484183A - A kind of high-performance building assembly sealant and preparation method thereof - Google Patents
A kind of high-performance building assembly sealant and preparation method thereof Download PDFInfo
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- CN110484183A CN110484183A CN201910796881.5A CN201910796881A CN110484183A CN 110484183 A CN110484183 A CN 110484183A CN 201910796881 A CN201910796881 A CN 201910796881A CN 110484183 A CN110484183 A CN 110484183A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
- B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/322—Construction of driving shafts
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
-
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention relates to building material technical fields, disclose a kind of high-performance building assembly sealant, the following components including parts by weight: 30~50 parts of silane modified polyether；10~15 parts of thinner；35~55 parts of wetting dispersing agent；1~2 part of filler；1~2 part of deicer；1.5~3 parts of thixotropic agent；0.9~2.4 part of age resister；0.2~1.5 part of mould inhibitor；0.3~0.8 part of coupling agent；0.1~0.2 part of catalyst.The performance of building assembly sealant of the invention meets the standard requirements of low modulus glue in JC/T 887-2017 " concrete joint building sealant ", unused during product test to arrive primary coat.Simultaneously, fungicidal properties meets the requirement of mould proof grade in GB/T 1741-2007 " paint film fungus resistance test method ", sealant of the invention is to concrete substrate with modulus is low, elasticity is good, the features such as cohesive force is strong, resistance to ag(e)ing is good, coating character is good and environmentally protective, can be widely applied to concrete and sealing concrete seams waterproof.
Description
Technical field
The present invention relates to building material technical fields, more particularly to a kind of high-performance building assembly sealant and its system
Preparation Method.
Background technique
With national construction industry transition and upgrade, the change of architecture construction mode, house assembling, industrialization are building industry
The only way of development.The requirement for living the portion's of building publication " building industry modernization development outline " for 2016, to assembled architecture
Development proposes specific developing goal: 30% or more the ratio of new building is accounted in 2016~2020 period assembled architectures,
50% or more the ratio of new building is accounted for 2021~2025 periods.Currently, the domestic assembly concrete promoted and applied
Structural system mainly has assembled integral concrete shear wall structure, assembled integral concrete frame structure and assembly whole
Formula concrete frame-shear wall structure, seam waterproof between concrete and concrete, it is necessary to use the sealing with certain elasticity
Glue solves.
Currently, the material for concrete structure (PC) assembly sealing mainly has silicone (SR), polyurethane in the market
(PU), the sealants such as silane modified polyether (MS) and polysulfide (PS), product category is various, and the standard of execution is also different.But
Not every sealant is suitable for PC sealing assembly, and SR is bad to concrete binding, and time long interface is easy to crack to cause
Leak, PU are not environmentally, extrudability bad to human body and environment nocuousness, PS containing free isocyanates and benzene kind solvent, apply
Work is poor.The advantages of silane modified polyether seal glue (MS) has silicone sealant and polyurethane sealant concurrently and strong point, performance
It the advantages that excellent weatherability, durability out, high anti-deformational displacement ability, good caking property, covering with paint property, is readily applicable to mix
Xtah Crude Clay structure sealant.
Domestic silane modified polyether seal glue (PC assembly is used) main use Kaneka company, Japan develops polyether skeleton
Silane modified polymer as matrix resin, by the way that plasticizer, polyamide wax, filler, dehydrating agent, the originals such as light stabilizer are added
Sealant is used in material high temperature dehydration preparation PC assembly.But such formula system plasticizer-containing, not environmentally, the plasticizer time, long have was moved
It moves, influences the resistance to ag(e)ing of sealant；Secondly, it is bad with the adhesive property of porous substrate PC, need primary coat with the use of ability
Reach good adhesive property, increases construction technology and cost；Finally, mildew resistance is bad, without the requirement of mould proof grade, mould
Meeting colloid can be broken, the service life of sealant is influenced.A kind of assembled architecture that 107722929 A of CN is provided is close with low modulus
Sealing and preparation method thereof, the invention is with end block resins, plasticizer, polyamide sodium, filler, vinyltrimethoxysilane, light
Stabilizer, silane coupling agent, catalyst are sealant made from raw material.Product not environmentally influences colloidality using plasticizer
Can, it mildew resistance and is not embodied in the invention with concrete binding power.
In consideration of it, needing to develop a kind of silane modified polyether class sealant, it is mainly used for the assembly sealing of PC structure.It improves
Sealant to the adhesive property of substrate, environmental-protecting performance, mildew resistance, endurance quality and coated performance, make properties of product it is more excellent,
It is easier to operate to, is more environmentally friendly, substituting the application of polyurethane products and silicone product on assembled architecture.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of high-performance building assembly sealant and its preparation sides
Method.The sealant caking property is good, modulus is low, elasticity is good, ageing-resistant good and energy is mould proof.Meanwhile the present invention is mixed using double-shaft power
The production equipment and technique of conjunction machine improve colloid quality, realize automation, environmentally protective production, improve production efficiency and product
Stability.
The present invention to achieve the above object, takes following technical scheme to be achieved:
A kind of high-performance building assembly sealant, the following components including parts by weight: silane modified polyether 30~50
Part；10~15 parts of thinner；35~55 parts of wetting dispersing agent；1~2 part of filler；1~2 part of deicer；1.5~3 parts of thixotropic agent；
0.9~2.4 part of age resister；0.2~1.5 part of mould inhibitor；0.3~0.8 part of coupling agent；0.1~0.2 part of catalyst.
Preferably, the silane modified polyether is trimethoxy silane end capped polyether, molecular weight 20000~25000,
25 DEG C of viscosity are 36000-42000mPa.s, trade name 30000T.
Preferably, the thinner is shunk by the polyether polyol PPG 5616 that weight ratio is 4:1 with hydrogenated bisphenol A two sweet
Oily ether is constituted.
Preferably, the filler is active nano precipitated calcium carbonate, nanometer coarse whiting, titanium dioxide, carbon black, silicon powder, talcum
One of powder or combination.
Preferably, the wetting dispersing agent is BYK-W 985.
Preferably, the deicer is methyltriethoxysilane, vinyltriethoxysilane, (the 2- first of vinyl three
Oxygroup ethyoxyl) silane, one of γ aminopropyltriethoxy silane.
Preferably, the thixotropic agent is hydrophobicity aerosil, trade names R202.
Preferably, the age resister is by β-(4- hydroxy phenyl -3,5- di-t-butyl) the positive octadecanol of propionic acid: 2'-
(2'- hydroxyl -3'- tert-butyl -5'- aminomethyl phenyl) -5- chlorobenzotriazole: bis- (2,2,6,6- tetramethyl -4- piperidyl) last of the ten Heavenly stems two
Acid esters is mixed to prepare by weight 3:2:2.
Preferably, the mould inhibitor is Hete rocyclic derivatives compound, trade name SZ99P.
Preferably, the catalyst is bis- (acetopyruvic acid) dibutyl tins.
Preferably, the coupling agent is by N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane: bis- (acetoacetate second
Ester group) two n-butoxy titanate esters are mixed to prepare by weight 1:1.
Another object of the present invention is to disclose the preparation method of above-mentioned high-performance building assembly sealant, including it is as follows
Step:
First silane modified polyether, thinner, wetting dispersing agent, thixotropic agent are added in double-shaft power mixing machine, stirred
Revolve 10r/min, disperses revolving speed 200r/min, stirs 15min；Then age resister, mould inhibitor is added, stirs 5min；Again plus
Entering filler, heat temperature raising dehydration, temperature is controlled at 110 DEG C, and stirring revolution 40r/min disperses revolving speed 1200r/min, vacuumize-
0.098MPa after stirring 1.5h, starts the pressure maintaining 1.5h that cools down；When 50 DEG C of temperature of charge, sample testing aqueous colloidal content works as water
Divide content to be less than 700ppm, continue the pressure maintaining that cools down, while stirring revolution 20r/min, disperses revolving speed 600r/min；When temperature drops
To 40 DEG C, deicer and coupling agent is added in normal pressure, stirs 10min；It is eventually adding catalyst, after stirring 5min, vacuum defoamation
5min is to get the sealant.
The principle of the present invention is as follows:
(1) by the present invention in that trimethoxy silane end capped polyether is used to pass through one kind as the matrix resin of PC sealant
Efficient catalyst --- bis- (acetopyruvic acid) dibutyl tins promote hydrolysis, it is possible to provide the high elastic recovery rate of colloid, well
Adhesive property and colloid low stretch modulus.
(2) by the present invention in that reducing matrix resin viscosity with thinner, filler in addition is soaked using wetting dispersing agent
Surface reduces filler surface tension, is easily dispersed filler in resin system, to reduce the viscosity of colloid.It drops simultaneously
Polyether polyol is reacted under the action of coupling agent, catalyst with silane modified polyether in stick, reduces colloid stretching die
It measures, the hydrogenated bisphenol A diglycidyl ether in thinner can improve the adhesive property of colloid and concrete.
(3) by the present invention in that can not only reduce cost with filler, moreover it is possible to enhance the physical property and machinery of sealant
Performance improves the performances such as heat-resisting, anti-aging, easy coloring；Meanwhile passing through filler containing pigment such as titanium dioxide, carbon blacks in filler
Sealant is deployed into the color suitable for substrate by combination, and toning can be completed in addition filler in this way, improves production efficiency.
(4) present invention carries out colloid water removal by physics and chemical method, and physics water removal is mainly by 110 DEG C of heating, no
Disconnected stirring material, is continuously vacuumized with -0.098MPa, and it includes aqueous vapor that boiling point, which is lower than 110 DEG C of escaping gas, is drained
Only, so that the moisture content in material is less than 700ppm, improve product quality；Meanwhile it packing in order to prevent and colloid in storage process
It is reacted with steam, by the way that chemical deicer is added in colloid, improves the storage stability of colloid, guarantee stable product quality.
(5) present invention uses thixotropic agent of the hydrophobicity aerosil as system, in fumed silica and colloid
Between tridimensional network is further formed by hydrogen bond.When construction, very low shearing force can destroy the reticular structure, thus
Desired low working viscosity is obtained, after no shearing force, reticular structure can restore rapidly again, so that thixotropy is improved,
Reduce sag.
(6) present invention further increases the resistance to ag(e)ing of sealant using age resister, used in the present invention anti-aging
Agent is by antioxidant: ultraviolet absorbing agent: light stabilizer is formed by weight 3:2:2, by antioxidant by the mistake in oxidation process
Peroxide breaks down carry out oxidation reaction can not, and the ultraviolet light in ultraviolet radiation absorption dilution agent light prevents harmful ultraviolet light
By redox, colloid is destroyed；Free radical in light stabilizer energy capture material, block light, oxygen aging it is chain anti-
It answers, makes free radical that can not continue the destruction lasting to strand, effective protection colloid.
(7) present invention improves product of the present invention by the fungicidal properties of addition biological Compositional type mould inhibitor and colloid itself
Mould proof grade.
(8) silane coupling agent and titante coupling agent is used in combination in the present invention, further increases the bonding of sealant
Performance, silane coupling agent mainly improve silane modified polyether and concrete substrate adhesive property, and titante coupling agent is main
Improve the adhesive property of filler powder and silane modified polyether resin.
(9) production technology through the invention heats up to PC assembly with sealant, is vacuumized, including discharges and wrap
Dress improves the production efficiency that sealant is used in PC assembly, the quality of production, while can reduce the content of VOC in colloid, and production technology is green
Colour circle is protected.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) performance of PC assembly sealant of the invention meets JC/T 887-2017 " concrete joint building sealing
Glue " standard requirements the low modulus of 50LM can be prepared by the optimization of formula, elastomeric sealant is very suitable for domestic
PC assembly.
(2) by the present invention in that with thinner and filler wetting dispersing agent, the viscosity of colloid is reduced using two-step method, is dropped
Low stretch modulus improves the extrusion performance of colloid, meanwhile, hydrogenated bisphenol A diglycidyl ether can also improve the cementability of colloid
Energy.
(3) by the present invention in that with itself of mould inhibitor and colloid fungicidal properties, make PC assembly sealant of the invention
Fungicidal properties greatly improve, by GB/T 1741-2007 " paint film fungus resistance test method " test, mould proof grade be 0 grade.
(4) silane coupling agent and titante coupling agent is used in combination in the present invention, further increases the bonding of sealant
Performance, silane coupling agent mainly improve silane modified polyether and concrete substrate adhesive property, and titante coupling agent is main
The adhesive property of filler powder and silane modified polyether resin is improved, product high-adhesion is realized, does not have on concrete substrate
Primary coat improves construction efficiency.
Specific embodiment
The present invention will be further described with reference to the examples below, but it should be recognized that embodiment is not to this hair
Bright claimed range is construed as limiting.
Embodiment 1
A kind of high-performance building assembly sealant, including following ingredient:
| Ingredient | Weight (kilogram) |
| Silane modified polyether 30000T | 30 |
| Polyether polyol PPG 5616 | 8 |
| Hydrogenated bisphenol A diglycidyl ether | 2 |
| Nanometer light calcium carbonate | 40 |
| BYK-W 985 | 1 |
| γ aminopropyltriethoxy silane | 1.5 |
| Fumed silica R202 | 1.5 |
| Age resister | 0.9 |
| Mould inhibitor SZ99P | 0.2 |
| Coupling agent | 0.3 |
| Bis- (acetopyruvic acid) dibutyl tins | 0.1 |
Wherein, age resister is by β-(4- hydroxy phenyl -3,5- di-t-butyl) the positive octadecanol of propionic acid: 2'- (2'- hydroxyl -
3'- tert-butyl -5'- aminomethyl phenyl) -5- chlorobenzotriazole: bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate is by weight
It is mixed to prepare than 3:2:2.Coupling agent is by N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane: bis- (ethyl acetoacetate bases)
Two n-butoxy titanate esters are mixed to prepare by weight 1:1.
Above-mentioned sealant the preparation method is as follows:
First by silane modified polyether 30000T, polyether polyol PPG 5616, hydrogenated bisphenol A diglycidyl ether, BYK-
W985, fumed silica R202 are added in double-shaft power mixing machine, and stirring revolution 10r/min disperses revolving speed 200r/
Min stirs 15min；Then age resister, SZ99P mould inhibitor is added, stirs 5min；Nanometer light calcium carbonate is added, is heated
Heating dehydration, temperature are controlled at 110 DEG C, and stirring revolution 40r/min disperses revolving speed 1200r/min, vacuumizes -0.098MPa, stir
After mixing 1.5h, start the pressure maintaining 1.5h that cools down；When 50 DEG C of temperature of charge, sample testing aqueous colloidal content, when moisture content is less than
700ppm continues the pressure maintaining that cools down, while stirring revolution 20r/min, disperses 600 r/min of revolving speed, when temperature drops to 40 DEG C, normal pressure
γ aminopropyltriethoxy silane and coupling agent is added, stirs 10min, is eventually adding bis- (acetopyruvic acid) dibutyl tins,
After stirring 5min, vacuum defoamation 5min, sealed package is to get the sealant.
Due to reducing trimethoxy silane terminated polyether resins viscosity by using thinner, wetting dispersing agent wetting is filled out
Expect surface, reduces surface tension, be easily dispersed filler in resin system, to reduce the viscosity of colloid, while viscosity reduction
Polyether polyol is reacted in the effect of coupling agent, catalyst with silane modified polyether in agent, is reduced colloid stretch modulus, is mentioned
High elastic recovery rate can be divided into 20LM by the 4.3.1 in GB/T 22083-2008.
Sealant test performance obtained is as follows:
| Serial number | Project | Test result | Testing standard |
| 1 | Sag/mm | 0 | JC/T 887-2017 |
| 2 | Surface drying time/h | 1.5 | JC/T 887-2017 |
| 3 | Extrudability/(mL/min) | 350 | JC/T 887-2017 |
| 4 | Elastic restoration ratio/% | 65 | JC/T 887-2017 |
| 5 | 23 DEG C of stretch modulus/MPa | 0.2 | JC/T 887-2017 |
| 6 | - 20 DEG C of stretch modulus/MPa | 0.3 | JC/T 887-2017 |
| 7 | Surely caking property is stretched | Without destruction | JC/T 887-2017 |
| 8 | Surely caking property is stretched after immersion | Without destruction | JC/T 887-2017 |
| 9 | Caking property after cold drawing-hot pressing | Without destruction | JC/T 887-2017 |
| 10 | Mass loss/% | 1 | JC/T 887-2017 |
| 11 | Mould proof grade | 1 grade | GB/T 1741-2007 |
Embodiment 2
A kind of high-performance building assembly sealant, including following ingredient:
Wherein, age resister is by β-(4- hydroxy phenyl -3,5- di-t-butyl) the positive octadecanol of propionic acid: 2'- (2'- hydroxyl -
3'- tert-butyl -5'- aminomethyl phenyl) -5- chlorobenzotriazole: bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate is by weight
It is mixed to prepare than 3:2:2.Coupling agent is by N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane: bis- (ethyl acetoacetate bases)
Two n-butoxy titanate esters are mixed to prepare by weight 1:1.
Above-mentioned sealant the preparation method is as follows:
First by silane modified polyether 30000T, polyether polyol PPG 5616, hydrogenated bisphenol A diglycidyl ether, BYK-
W985, fumed silica R202 are added in double-shaft power mixing machine, and stirring revolution 10r/min disperses revolving speed 200r/
Min stirs 15min；Then age resister, SZ99P mould inhibitor is added, stirs 5min；It adds nanometer light calcium carbonate and receives
Rice coarse whiting, heat temperature raising dehydration, temperature are controlled at 110 DEG C, and stirring revolution 40r/min disperses 1200 r/min of revolving speed, takes out true
Sky -0.098MPa after stirring 1.5h, starts the pressure maintaining 1.5h that cools down；When 50 DEG C of temperature of charge, sample testing aqueous colloidal content,
When moisture content be less than 700ppm, continue cool down pressure maintaining, while stir revolution 20r/min, disperse revolving speed 600r/min, work as temperature
40 DEG C are dropped to, (2- methoxy ethoxy) silane of vinyl three and coupling agent is added in normal pressure, stirs 10min, is eventually adding bis- (second
Acyl pyruvic acid) dibutyl tin, after stirring 5min, vacuum defoamation 5min, sealed package is to get the sealant.
Due to increasing thinner, mould inhibitor and the dosage of wetting dispersing agent, the viscosity of colloid is reduced using two-step method,
Stretch modulus is reduced, the extrusion performance of colloid is improved, the mildew resistance grade of colloid is further improved using mould inhibitor, by GB/
4.3.1 in T 22083-2008 can be divided into 25LM.
Sealant test performance obtained is as follows:
Embodiment 3
A kind of high-performance building assembly sealant, including following ingredient:
| Ingredient | Weight (kilogram) |
| Silane modified polyether 30000T | 50 |
| Polyether polyol PPG 5616 | 11.2 |
| Hydrogenated bisphenol A diglycidyl ether | 2.8 |
| Nanometer coarse whiting | 35 |
| BYK-W 985 | 1.2 |
| Vinyl three (2- methoxy ethoxy) silane | 1 |
| Fumed silica R202 | 3 |
| Age resister | 2.4 |
| Mould inhibitor SZ99P | 1.5 |
| Coupling agent | 0.8 |
| Bis- (acetopyruvic acid) dibutyl tins | 0.2 |
Wherein, age resister is by β-(4- hydroxy phenyl -3,5- di-t-butyl) the positive octadecanol of propionic acid: 2'- (2'- hydroxyl -
3'- tert-butyl -5'- aminomethyl phenyl) -5- chlorobenzotriazole: bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate is by weight
It is mixed to prepare than 3:2:2.Coupling agent is by N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane: bis- (ethyl acetoacetate bases)
Two n-butoxy titanate esters are mixed to prepare by weight 1:1.
Above-mentioned sealant the preparation method is as follows:
First by silane modified polyether 30000T, polyether polyol PPG 5616, hydrogenated bisphenol A diglycidyl ether, BYK-
W985, fumed silica R202 are added in double-shaft power mixing machine, and stirring revolution 10r/min disperses revolving speed 200r/
Min stirs 15min；Then age resister, SZ99P mould inhibitor is added, stirs 5min；A nanometer coarse whiting is added, heat temperature raising is de-
Water, temperature are controlled at 110 DEG C, and stirring revolution 40r/min disperses revolving speed 1200r/min, vacuumizes -0.098MPa, stirs
After 1.5h, start the pressure maintaining 1.5h that cools down；When 50 DEG C of temperature of charge, sample testing aqueous colloidal content, when moisture content is less than
700ppm continues the pressure maintaining that cools down, while stirring revolution 20r/min, disperses revolving speed 600r/min, when temperature drops to 40 DEG C, normal pressure
(2- methoxy ethoxy) silane of vinyl three and coupling agent is added, stirs 10min, is eventually adding bis- (acetopyruvic acid) two fourths
Ji Xi, after stirring 5min, vacuum defoamation 5min, sealed package is to get the sealant.
Due to increasing the dosage of alkane modified polyether resin, coupling agent, catalyst, the dosage of filler is reduced, glue is reduced
Body stretch modulus improves elastic restoration ratio, and silane coupling agent and titante coupling agent, silane coupling agent master is used in combination
Silane modified polyether and concrete substrate adhesive property are improved, titante coupling agent mainly improves filler powder and changes with silane
Property polyether resin adhesive property, realize product high-adhesion, on concrete substrate do not have to primary coat, by GB/T 22083-
4.3.1 in 2008 can be divided into 50LM, and mould proof grade is 0 grade.
Sealant test performance obtained is as follows:
| Serial number | Project | Test result | Testing standard |
| 1 | Sag/mm | 0 | JC/T 887-2017 |
| 2 | Surface drying time/h | 1.0 | JC/T 887-2017 |
| 3 | Extrudability/(mL/min) | 400 | JC/T 887-2017 |
| 4 | Elastic restoration ratio/% | 88 | JC/T 887-2017 |
| 5 | 23 DEG C of stretch modulus/MPa | 0.4 | JC/T 887-2017 |
| 6 | - 20 DEG C of stretch modulus/MPa | 0.6 | JC/T 887-2017 |
| 7 | Surely caking property is stretched | Without destruction | JC/T 887-2017 |
| 8 | Surely caking property is stretched after immersion | Without destruction | JC/T 887-2017 |
| 9 | Caking property after cold drawing-hot pressing | Without destruction | JC/T 887-2017 |
| 10 | Mass loss/% | 1.5% | JC/T 887-2017 |
| 11 | Mould proof grade | 0 grade | GB/T 1741-2007 |
In conclusion the performance of building assembly sealant of the invention meets JC/T 887-2017, " concrete joint is used
Building sealant " in low modulus glue standard requirements, it is unused during product test to arrive primary coat.Meanwhile fungicidal properties meets
The requirement of mould proof grade in GB/T 1741-2007 " paint film fungus resistance test method ", sealant of the invention is to coagulation soil matrix
Material has the features such as modulus is low, elasticity is good, and cohesive force is strong, resistance to ag(e)ing is good, coating character is good and environmentally protective, can be widely applied to
Concrete and sealing concrete seams waterproof.
It is provided for the embodiments of the invention technical solution above to be described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are expounded, the explanation of above embodiments is only applicable to help to understand this
The principle of inventive embodiments；At the same time, for those skilled in the art, according to an embodiment of the present invention, in specific embodiment party
There will be changes in formula and application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of high-performance building assembly sealant, which is characterized in that the following components including parts by weight: silane-modified poly-
30~50 parts of ether；10~15 parts of thinner；35~55 parts of wetting dispersing agent；1~2 part of filler；1~2 part of deicer；Thixotropic agent
1.5~3 parts；0.9~2.4 part of age resister；0.2~1.5 part of mould inhibitor；0.3~0.8 part of coupling agent；Catalyst 0.1~0.2
Part.
2. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that described silane-modified poly-
Ether is trimethoxy silane end capped polyether, and molecular weight is 36000-42000mPa.s in 20000~25000,25 DEG C of viscosity.
3. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the thinner is by weight
Amount is constituted than the polyether polyol PPG 5616 and hydrogenated bisphenol A diglycidyl ether for being 4:1.
4. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the filler is activity
One of nanometer light calcium carbonate, nanometer coarse whiting, titanium dioxide, carbon black, silicon powder, talcum powder or combination；The wetting and dispersing
Agent is BYK-W 985.
5. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the deicer is first
Ethyl triethoxy silicane alkane, vinyltriethoxysilane, vinyl three (2- methoxy ethoxy) silane, gamma-amino propyl three
One of Ethoxysilane.
6. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the thixotropic agent is thin
Aqueous fumed silica.
7. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the age resister
By β-(4- hydroxy phenyl -3,5- di-t-butyl) the positive octadecanol of propionic acid: 2'- (2'- hydroxyl -3'- tert-butyl -5'- methylbenzene
Base) -5- chlorobenzotriazole: bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate is mixed to prepare by weight 3:2:2.
8. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the mould inhibitor is
Hete rocyclic derivatives compound；The catalyst is bis- (acetopyruvic acid) dibutyl tins.
9. a kind of high-performance building assembly sealant according to claim 1, which is characterized in that the coupling agent by
N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane: bis- (ethyl acetoacetate base) two n-butoxy titanate esters are by weight
1:1 is mixed to prepare.
10. a kind of preparation method of high-performance building assembly sealant, feature exist as described in claim any one of 1-9
In including the following steps:
First silane modified polyether, thinner, wetting dispersing agent, thixotropic agent are added in double-shaft power mixing machine, stirring revolution
10r/min disperses revolving speed 200r/min, stirs 15min；Then age resister, mould inhibitor is added, stirs 5min；It adds and fills out
Material, heat temperature raising dehydration, temperature are controlled at 110 DEG C, and stirring revolution 40r/min disperses revolving speed 1200r/min, vacuumize-
0.098MPa after stirring 1.5h, starts the pressure maintaining 1.5h that cools down；When 50 DEG C of temperature of charge, sample testing aqueous colloidal content works as water
Divide content to be less than 700ppm, continue the pressure maintaining that cools down, while stirring revolution 20r/min, disperses revolving speed 600r/min；When temperature drops to
40 DEG C, deicer and coupling agent is added in normal pressure, stirs 10min；It is eventually adding catalyst, after stirring 5min, vacuum defoamation 5min,
Up to the sealant.
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| CN112680161A (en) * | 2020-12-23 | 2021-04-20 | 东莞市瑞朗电子有限公司 | Curing sealing adhesive and preparation method thereof |
| CN113416511A (en) * | 2021-06-09 | 2021-09-21 | 广东工程职业技术学院 | Novel MS sealant for fabricated concrete and preparation method thereof |
| CN115851204A (en) * | 2022-03-24 | 2023-03-28 | 安徽牛元新材料有限公司 | External mildew-proof adhesive for building construction and preparation method thereof |
| CN117925167A (en) * | 2024-01-26 | 2024-04-26 | 西子木河北建筑材料科技有限公司 | Environment-friendly MS wood floor paving adhesive with simple construction and preparation method thereof |
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