CN105038564B - A kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint - Google Patents
A kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint Download PDFInfo
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- CN105038564B CN105038564B CN201510360424.3A CN201510360424A CN105038564B CN 105038564 B CN105038564 B CN 105038564B CN 201510360424 A CN201510360424 A CN 201510360424A CN 105038564 B CN105038564 B CN 105038564B
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- 239000003973 paint Substances 0.000 title claims abstract description 28
- 239000004814 polyurethane Substances 0.000 title claims abstract description 28
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000005871 repellent Substances 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 229920005862 polyol Polymers 0.000 claims abstract description 23
- 150000003077 polyols Chemical class 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000018044 dehydration Effects 0.000 claims abstract description 11
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 11
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 7
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 6
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 6
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 6
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 20
- -1 polyoxypropylene Polymers 0.000 claims description 19
- 229920001451 polypropylene glycol Polymers 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 11
- 235000019260 propionic acid Nutrition 0.000 claims description 10
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 10
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical group OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 claims description 8
- 150000002009 diols Chemical class 0.000 claims description 5
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 3
- RLPSARLYTKXVSE-UHFFFAOYSA-N 1-(1,3-thiazol-5-yl)ethanamine Chemical compound CC(N)C1=CN=CS1 RLPSARLYTKXVSE-UHFFFAOYSA-N 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- 229920000305 Nylon 6,10 Polymers 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- KPTLPIAOSCGETM-UHFFFAOYSA-N benzene 1,2-diisocyanatoethane Chemical compound O=C=NCCN=C=O.c1ccccc1 KPTLPIAOSCGETM-UHFFFAOYSA-N 0.000 claims description 2
- 239000012964 benzotriazole Substances 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims description 2
- 125000005442 diisocyanate group Chemical group 0.000 claims description 2
- 229940031569 diisopropyl sebacate Drugs 0.000 claims description 2
- DROMNWUQASBTFM-UHFFFAOYSA-N dinonyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCC DROMNWUQASBTFM-UHFFFAOYSA-N 0.000 claims description 2
- XFKBBSZEQRFVSL-UHFFFAOYSA-N dipropan-2-yl decanedioate Chemical compound CC(C)OC(=O)CCCCCCCCC(=O)OC(C)C XFKBBSZEQRFVSL-UHFFFAOYSA-N 0.000 claims description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 claims 1
- 150000002240 furans Chemical class 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229920003225 polyurethane elastomer Polymers 0.000 abstract description 3
- 229920005749 polyurethane resin Polymers 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010189 synthetic method Methods 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 238000007599 discharging Methods 0.000 description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 4
- GHGGJRRSWOFWJP-UHFFFAOYSA-N benzene-1,2-diol;formic acid Chemical compound OC=O.OC1=CC=CC=C1O GHGGJRRSWOFWJP-UHFFFAOYSA-N 0.000 description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004970 Chain extender Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 150000005846 sugar alcohols Polymers 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- CBFCDTFDPHXCNY-UHFFFAOYSA-N octyldodecane Natural products CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PJVNDJOBKYOMBU-UHFFFAOYSA-N formic acid;phenol Chemical compound OC=O.OC1=CC=CC=C1 PJVNDJOBKYOMBU-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006561 solvent free reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of preparation methods of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint, are mainly characterized by:The polyols blend of polyfunctionality polyether polyol and poly-dihydric alcohol is added in reaction kettle, isocyanates is added after dehydration, 50 80 DEG C of 1 4h of reaction, it is down to room temperature, plasticizer, antifoaming agent, antioxidant and the ultra-violet absorber being pre-dried is added, polyurethane water-proof paint is made after mixing.It the advantage is that:1) raw materials used cheap and easy to get, synthetic method is simple and direct efficiently, at low cost, the amplification of easily operated process and realization industrialized production;2) polyurethane resin can form fine and close polyurethane elastomer film using water as curing agent after the air set with certain humidity, have tight security.Fine and close cross-linked network structure can be formed due to introducing polyfunctionality active group, after solidification, and there is excellent mechanical property(Film tensile strength is more than 6MPa, and elongation at break is more than 1000%), a kind of excellent waterproof material is can be used as, is had a extensive future.
Description
Technical field
The present invention relates to a kind of preparation methods of building trade field Environmental-protecwaterproof waterproof paint more particularly to one kind to have
High tensile, high elongation at tear wet-solidifying single-component polyurethane water-repellent paint preparation method.
Background technology
The surface waterproofing can effectively protect building of building concrete is extended building service life, built by water erosion
Building waterproofing is most important.In the water-repellent paint of numerous commercial applications, polyurethane water-proof paint due to its film have elasticity and
Good-extensibility, tensile strength are high, caking property is good, volume contraction is small, film waterproof material seamless, the change to basic crack retractility
Shape has stronger adaptability, and working drawing review is convenient (being amorphous viscous liquid substance before polyurethane water-proof paint solidification),
Any complicated substrate surface is easy to construct, can easily be accommodated the features such as component ratio, can be used for building different parts
Waterproofing and leakage-stopping, play an important role in waterproof field.
Polyurethane water-proof protective coating is mainly the following:Asphalt polyurethane water-proof paint, mono-component polyurethane waterproof
Coating, Two-component Waterproof Polyurethane Coating, aqueous polyurethane water-repellent paint, spray polyurea elastomer water-repellent paint.Wherein one-component
Polyurethane water-proof paint because its is easy for construction, eliminate construction before burden process, will not occur measure mistake the advantages that it is current
It is greatly developed, the patent of this respect includes:CN201110007526.9、CN201110033097.2、
CN201110333955.5、CN201210537883.0、CN201310041967.X、CN201410038016.1、
CN201410210676.3, CN201410459714.9, CN201410294925.1 etc..Although current monocomponent polyurethane waterproof
The defects of coating has obtained good progress, but that there are still mechanical performances is bad, low to the adhesive force in base, poor water resistance, no
The construction related request of some architectural engineerings at present can be met;It is of high cost, it is difficult to large-scale promotion application.
In order to overcome the problems referred above, the present invention develops a kind of poly-dihydric alcohol based on full hydrophobic structure and polyfunctionality is poly-
The single-component polyurethane water-proof paint of ethoxylated polyhydric alcohol, by the way that the well-designed of polyurethane resin molecular structure, control crosslinking is close
Degree and cross-linked network structure have been synthesized with high mechanical properties, good water resistance, wet solid to one-component that base adhesive force is excellent
Change polyurethane water-proof paint.The polyurethane resin, can shape after the air set with certain humidity using water as curing agent
At fine and close polyurethane elastomer film, there is tight security.It is at low cost, it is expected in reality since its synthesis technology is simple
Large-scale application is obtained in production.
Invention content
There are high mechanical properties, good water resistance, excellent to base adhesive force the purpose of the present invention is to provide a kind of
The preparation method of one-component solvent-free polyurethane water-repellent paint, to solve existing polyurethane water-proof paint bad mechanical property, cost
The problems such as high.
To achieve the above object, the present invention develops a kind of poly-dihydric alcohol based on full hydrophobic structure and polyfunctionality is poly-
The single-component polyurethane water-proof paint of ethoxylated polyhydric alcohol, preparation method are:
The polyols blend of polyfunctionality polyether polyol and poly-dihydric alcohol is added in reaction kettle, is added after dehydration different
Cyanate, 50-80 DEG C of reaction 1- 4h, is down to room temperature, and the plasticizer being pre-dried, antifoaming agent, antioxidant and ultraviolet is added
Polyurethane water-proof paint is made in light absorbers after mixing;
Wherein, polyfunctionality polyether polyol used be polypropylene glycerol aether or polyoxypropylene pentaerythrite ether, poly- two
First alcohol is polypropylene glycol or polytetrahydrofuran diol, and the mass ratio of poly-dihydric alcohol and polyfunctionality polyether polyol is 1:2~1:
10, the addition of isocyanates is to ensure in polyols blend on the basis of hydroxyl reaction completely, preferred isocyanate group and hydroxyl
The molar ratio of base is 2:1-4:1, the addition of plasticizer is the 3-8wt% of polyols blend dosage, and the addition of antifoaming agent is
The 0.5-1wt% of polyols blend dosage, the addition of antioxidant are the 0.1-1wt% of polyols blend dosage, and ultraviolet light is inhaled
The addition for receiving agent is the 0.1-1wt% of polyols blend dosage.
The molecular weight of the polypropylene glycerol aether is 1000-10000, and the molecular weight of polyoxypropylene pentaerythrite ether is
1000-10000。
The molecular weight of the polypropylene glycol is 1000-10000, and the molecular weight of polytetrahydrofuran diol is 1000-3000.
The isocyanates is toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate cyanogen
Acid esters, how diisocyanate, benzene dimethylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate
One or more of mixture.
The plasticizer is didecyl phthalate, dinonyl phthalate, diisopropyl sebacate, decanedioic acid two
One or more of monooctyl ester mixture.
The antifoaming agent is organic silicon defoamer.
The antioxidant is four(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Pentaerythrite, bis- [β (tertiary fourths of 3-
Base -5- methyl -4- hydroxy phenyls) propionic acid] triethyleneglycol ester, three(3,5- di-tert-butyl-hydroxy phenyls)Chlorinated isocyanurates, 2,6-
One or more of di-tert-butyl-4-methy phenol mixture.
The ultra-violet absorber is ESCALOL 567 or 2- (2 '-hydroxyls -3 ', 5 '-two [ 1,1-
3,5-dimethylphenyl ])-benzotriazole.
Compared with prior art, the present invention has the following advantages:
The present invention can synthesize target product using one-step method, simple and direct efficient, simple for process;Polyol starting material used is cheap
It is easy to get, at low cost, the amplification of easily operated process and realization industrialized production.Synthesis technology is environmentally protective, is arranged without " three wastes "
It puts.Chain extender need not be added due to introducing chemically crosslinkable ingredient, in reaction and can guarantee the mechanical property after film forming.
Since the introducing of chain extender can improve the viscosity of reaction system, be generally needed to be added diluent just can guarantee reaction it is normal into
Row, and the present invention is without being added chain extender, it can be achieved that solvent-free reaction, environmentally protective.
Polyurethane water-proof paint good mechanical performance synthesized by the present invention, water-tolerant.Using polyetherdiol and polyethers
Polyalcohol is raw material, and for polyether polyol since its degree of functionality is more than 2, late phase reaction can realize chemical crosslinking when forming a film, improve and hand over
Join density, while introducing polyetherdiol, effectively adjusts the density of crosslinking points, while ensureing that there is high tensile strength,
Assigning material has excellent elongation at break.Since polyols blend used is hydrophobic structure, entire reaction process institute
Other hydrophilic radicals or segment are not introduced, synthesized polyurethane water-proof paint has excellent water resistance.
Polyurethane water-proof paint synthesized by the present invention is using water as curing agent, after the air set with certain humidity
Fine and close polyurethane elastomer film can be formed, there is tight security.Due to introducing polyfunctionality active group, water is met
Fine and close cross-linked network structure can be formed after solidification, and there is excellent mechanical property(Film tensile strength is more than 6MPa, and fracture is stretched
Long rate is more than 1000%), a kind of excellent waterproof material is can be used as, is had a extensive future.
Specific implementation mode
It will be helpful to understand the present invention by following embodiments, but do not limit present disclosure.
Embodiment 1:
20g polypropylene glycols are added in reaction bulb(Mn=1000), 2g polypropylene glycerol aethers(Mn=10000), 120 DEG C
Vacuum dehydration 2h is cooled to 50 DEG C, and toluene di-isocyanate(TDI) 7.1g, 50 DEG C of reaction 1h is added and is down to room temperature, addition catechol
Formic acid didecyl 0.66g, silicon-type antifoaming agent 0.11g, four(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Ji Wusi
Alcohol 0.022g, ESCALOL 567 0.022g.10min is stirred, discharging is sealed.
Embodiment 2:
20g polypropylene glycols are added in reaction bulb(Mn=10000), 10g polypropylene glycerol aethers(Mn=1000), 120 DEG C
Vacuum dehydration 2h is cooled to 50 DEG C, and toluene di-isocyanate(TDI) 11.8g, 80 DEG C of reaction 4h are added, are down to room temperature, addition neighbour benzene two
Phenol formic acid didecyl 2.4g, silicon-type antifoaming agent 0.3g, four(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Ji Wusi
Alcohol 0.3g, ESCALOL 567 0.3g.10min is stirred, discharging is sealed.
Embodiment 3:
20g polypropylene glycols are added in reaction bulb(Mn=6000), 4g polypropylene glycerol aethers(Mn=6000), 120 DEG C true
Sky dehydration 2h, is cooled to 60 DEG C, and toluene di-isocyanate(TDI) 2.3g, 60 DEG C of reaction 3h is added and is down to room temperature, addition catechol first
Two nonyl ester 1.2g of acid, silicon-type antifoaming agent 0.16g, four(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Pentaerythrite
0.12g, ESCALOL 567 0.12g.10min is stirred, discharging is sealed.
Embodiment 4:
Addition 20g polytetrahydrofuran diols in reaction bulb are incorporated in reaction bulb(Mn=1000), 4g polyoxypropylene seasons
Penta 4 alcohol ethers(Mn=1000), 120 DEG C of vacuum dehydration 2h are cooled to 60 DEG C, are added hexamethylene diisocyanate 14.1g, 50 DEG C
3h is reacted, is down to room temperature, is added two nonyl ester 1.2g of catechol formic acid, silicon-type antifoaming agent 0.16g, four(β-(Bis- uncles of 3,5-
Butyl -4- hydroxy phenyls)Propionic acid)Pentaerythrite 0.12g, ESCALOL 567 0.12g.10min is stirred, is gone out
Material, is sealed.
Embodiment 5:
It is incorporated in reaction bulb in reaction bulb and is incorporated in addition 20g polypropylene glycols in reaction bulb(Mn=1000), 4g is poly-
Oxypropylene pentaerythrite ether(Mn=10000), 120 DEG C of vacuum dehydration 2h are cooled to 60 DEG C, hexamethylene diisocyanate are added
10.5g, 80 DEG C of reaction 4h, is down to room temperature, is added two nonyl ester 1.2g of catechol formic acid, silicon-type antifoaming agent 0.16g, and four
(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Pentaerythrite 0.12g, ESCALOL 567 0.12g.
10min is stirred, discharging is sealed.
Embodiment 6:
20g polytetrahydrofuran diols are added in reaction bulb(Mn=3000), 4g polypropylene glycerol aethers(Mn=2000),
120 DEG C of vacuum dehydration 2h, are cooled to 60 DEG C, and hexamethylene diisocyanate 5.0g is added, 120 DEG C of vacuum dehydration 2h, 120 DEG C
Vacuum dehydration 2h, is cooled to 60 DEG C, is added two nonyl ester 1.2g of catechol formic acid, silicon-type antifoaming agent 0.16g, and four(β-(3,
5- di-tert-butyl-hydroxy phenyls)Propionic acid)Pentaerythrite 0.12g, ESCALOL 567 0.12g.Stirring
10min, discharging, is sealed.
After film forming, the mechanical performance of film see the table below the made target product of above-described embodiment.
Sample | Tensile strength MPa | Elongation at break |
Embodiment 1 | 6.5MPa | 1450% |
Embodiment 2 | 12.5MPa | 740% |
Embodiment 3 | 8.9MPa | 2100% |
Embodiment 4 | 6.8 MPa | 1250% |
Embodiment 5 | 7.2MPa | 1520% |
Embodiment 6 | 6.9 MPa | 1230% |
Claims (5)
1. a kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint, it is characterised in that preparation process is:In
The polyols blend of polyfunctionality polyether polyol and poly-dihydric alcohol is added in reaction kettle, isocyanates, 50- are added after dehydration
80 DEG C of reaction 1-4h, are down to room temperature, plasticizer, antifoaming agent, antioxidant and the ultra-violet absorber being pre-dried are added, mix
Obtained polyurethane water-proof paint after closing uniformly;
Wherein, polyfunctionality polyether polyol used is polyoxypropylene pentaerythrite ether, and poly-dihydric alcohol is polypropylene glycol or poly- four
The mass ratio of hydrogen furans glycol, poly-dihydric alcohol and polyfunctionality polyether polyol is 2:1~10:1, the addition of isocyanates with
Ensure that in polyols blend on the basis of hydroxyl reaction completely, the molar ratio of isocyanate groups and hydroxyl is 2:1-4:1, plasticizer
Addition be polyols blend dosage 3-8wt%, the addition of antifoaming agent is the 0.5-1wt% of polyols blend dosage, is resisted
The addition of oxidant is the 0.1-1wt% of polyols blend dosage, and the addition of ultra-violet absorber is polyols blend dosage
0.1-1wt%;
The molecular weight of the polyoxypropylene pentaerythrite ether is 1000-10000;The molecular weight of the polypropylene glycol is 1000-
10000, the molecular weight of polytetrahydrofuran diol is 1000-3000;
The isocyanates is naphthalene diisocyanate, benzene dimethylene diisocyanate, isophorone diisocyanate, six methylenes
One or more of group diisocyanate mixture.
2. a kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint according to claim 1, special
Sign is that the plasticizer is pungent for didecyl phthalate, dinonyl phthalate, diisopropyl sebacate, decanedioic acid two
One or more of ester mixture.
3. a kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint according to claim 1, special
Sign is that the antifoaming agent is organic silicon defoamer.
4. a kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint according to claim 1, special
Sign is that the antioxidant is four(β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic acid)Pentaerythrite, bis- [β (tertiary fourths of 3-
Base -5- methyl -4- hydroxy phenyls) propionic acid] triethyleneglycol ester, three(3,5- di-tert-butyl-hydroxy phenyls)Chlorinated isocyanurates, 2,6-
One or more of di-tert-butyl-4-methy phenol mixture.
5. a kind of preparation method of environment-friendly type wet-solidifying single-component polyurethane water-repellent paint according to claim 1, special
Sign is that the ultra-violet absorber is ESCALOL 567 or 2- (2 '-hydroxyls -3 ', 5 '-two [ 1,1- diformazans
Base phenyl ])-benzotriazole.
Priority Applications (1)
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CN105694702B (en) * | 2016-03-15 | 2017-12-26 | 中科院广州化学有限公司南雄材料生产基地 | A kind of mono component wet solidifying organic silicon modified polyurethane water-repellent paint and preparation method |
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CN108070067A (en) * | 2016-11-15 | 2018-05-25 | 中国科学院青岛生物能源与过程研究所 | A kind of preparation method of Cross-linkable coating antibacterial polyurethane |
CN107603453A (en) * | 2017-09-25 | 2018-01-19 | 中国石油天然气集团公司 | A kind of polyurethane anticorrosive coating and preparation method thereof |
CN108102058B (en) * | 2018-01-11 | 2020-09-11 | 山东扬名新材料技术有限公司 | Single-component solvent-free self-leveling polyurethane elastomer |
CN108331279B (en) * | 2018-02-05 | 2019-11-05 | 江苏苏博特新材料股份有限公司 | A kind of construction method of the spray polyurea protection system for concrete base layer surface |
CN111019078B (en) * | 2019-12-31 | 2022-04-05 | 北京华腾新材料股份有限公司 | Waterborne polyurethane curing agent and preparation method and application thereof |
CN112500778A (en) * | 2020-12-10 | 2021-03-16 | 株洲飞鹿高新材料技术股份有限公司 | Environment-friendly one-component polyurethane coating and preparation method thereof |
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