CN117844362A - Preparation method of super-adhesion and puncture-resistant polyurethane waterproof paint - Google Patents
Preparation method of super-adhesion and puncture-resistant polyurethane waterproof paint Download PDFInfo
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- CN117844362A CN117844362A CN202311597627.5A CN202311597627A CN117844362A CN 117844362 A CN117844362 A CN 117844362A CN 202311597627 A CN202311597627 A CN 202311597627A CN 117844362 A CN117844362 A CN 117844362A
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 22
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000003973 paint Substances 0.000 title claims abstract description 13
- -1 aliphatic isocyanate Chemical class 0.000 claims abstract description 68
- 238000000576 coating method Methods 0.000 claims abstract description 44
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 229920005862 polyol Polymers 0.000 claims abstract description 33
- 150000003077 polyols Chemical class 0.000 claims abstract description 33
- 239000004359 castor oil Substances 0.000 claims abstract description 20
- 235000019438 castor oil Nutrition 0.000 claims abstract description 20
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000012948 isocyanate Substances 0.000 claims abstract description 16
- 150000002148 esters Chemical class 0.000 claims abstract description 15
- 239000004014 plasticizer Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 13
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 12
- 229920000570 polyether Polymers 0.000 claims abstract description 12
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 20
- 230000008685 targeting Effects 0.000 claims description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 12
- 150000004756 silanes Chemical class 0.000 claims description 12
- 150000004982 aromatic amines Chemical class 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 4
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- 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 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005580 one pot reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- MVIVRBGTVSMZEX-UHFFFAOYSA-N carboxybismuth Chemical compound OC([Bi])=O MVIVRBGTVSMZEX-UHFFFAOYSA-N 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- BKUSIKGSPSFQAC-RRKCRQDMSA-N 2'-deoxyinosine-5'-diphosphate Chemical compound O1[C@H](CO[P@@](O)(=O)OP(O)(O)=O)[C@@H](O)C[C@@H]1N1C(NC=NC2=O)=C2N=C1 BKUSIKGSPSFQAC-RRKCRQDMSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical compound O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910002011 hydrophilic fumed silica Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to the field of building waterproof materials, in particular to a preparation method of super-adhesive penetration-resistant polyurethane waterproof paint, which comprises the following raw materials of polytetrahydrofuran polyol, castor oil polyether polyol, aliphatic isocyanate and the like according to the following steps: s1, firstly, pumping polytetrahydrofuran polyol, castor oil polyether polyol, natural plant ester plasticizer, nano silica fume powder, hydrophobic nano fumed silica and antioxidant into a reaction kettle, and continuously stirring for 3 hours at 100-120 ℃ under the vacuum of-0.09-0.1 MPa in the reaction kettle; s2, cooling to 70 ℃, adding aliphatic isocyanate, and continuously stirring and reacting for 3 hours at 85-95 ℃ under the protection of nitrogen. The waterproof coating obtained by the preparation method of the waterproof coating has the advantages of high peel strength of a base layer, puncture resistance and no bulge of a coating film in a high-temperature and high-humidity environment.
Description
Technical Field
The invention relates to the field of building waterproof materials, in particular to polyurethane waterproof paint and a preparation method thereof.
Background
With the development of society, the building grade is continuously improved, the quality requirements of various building materials are continuously increased, wherein waterproof materials are paid attention to as important components for building waterproofing, and the general Specification for building and municipal engineering waterproof GB55030-2022 is formally implemented in 2023, 4 months and 1 day. The implementation of the new waterproof standard further improves the working life requirements of engineering waterproof design, divides the importance degree of waterproof functions and the use environment of engineering waterproof at different levels, and further strictly requires the waterproof construction and the quality of materials. In building waterproof materials, waterproof coatings are more and more widely applied, but at present, the most waterproof coatings in the market are polymer cement waterproof coatings, water-based acrylic ester waterproof coatings and oily polyurethane waterproof coatings which are three main streams. The oily polyurethane waterproof paint has relatively good technical indexes, but the paint has low peeling strength, is easy to separate from a base layer, is easy to puncture by some sundries on site, is easy to bulge and foam in a high-humidity environment, and is more and more favored along with the implementation of new waterproof standards.
From the perspective of waterproof construction, many domestic building foundation waterproof materials mainly comprise asphalt coiled materials and polymer coiled materials, the construction process is complex, and the continuous development of a waterproof coating capable of being tested in a complex environment is imperative.
Disclosure of Invention
The invention aims to solve the problems of low stripping strength of a base layer, puncture resistance and film swelling in a high-temperature and high-humidity environment of the existing waterproof coating, and provides a preparation method of the waterproof coating, namely a preparation method of super-adhesive puncture-resistant polyurethane waterproof coating, which has high stripping strength of the base layer and is puncture-resistant and film-swelling-free in the high-temperature and high-humidity environment.
In order to achieve the purpose of the invention, the technical scheme of the invention is as follows:
a preparation method of an ultra-adhesion and puncture-resistant polyurethane waterproof coating is characterized by comprising the following steps of:
the composition comprises the following components in parts by weight:
10-20 parts of polytetrahydrofuran polyol,
15-25 parts of castor oil polyether polyol,
10-20 parts of aliphatic isocyanate,
0.1 to 0.8 part of targeted catalyst,
2-7 parts of modified silane coupling agent,
15-30 parts of nano silica fume powder,
2-10 parts of hydrophobic nanometer fumed silica,
5-15 parts of natural plant ester plasticizer,
0.5-3 parts of antioxidant;
the puncture-resistant polyurethane waterproof paint is prepared by adopting a one-pot stepped preparation process, and the specific preparation process is as follows:
s1, firstly, pumping polytetrahydrofuran polyol, castor oil polyether polyol, natural plant ester plasticizer, nano silica fume powder, hydrophobic nano fumed silica and antioxidant into a reaction kettle, heating to 100-120 ℃, and keeping the reaction kettle under vacuum of-0.09-0.1 MPa for continuous stirring for 3 hours;
s2, cooling to 70 ℃, adding aliphatic isocyanate, heating to 85-95 ℃ under the protection of nitrogen, and continuously stirring for reacting for 3 hours;
s3, then cooling to 75 ℃, dropwise adding a modified silane coupling agent, and keeping the temperature of 75 ℃ for continuous stirring reaction for 1 hour;
s4, finally cooling to below 60 ℃, adding a targeting catalyst, stirring and reacting for 1 hour, and discharging to prepare the super-adhesive puncture-resistant polyurethane waterproof coating.
In one embodiment, the castor oil polyol is castor oil and an aliphatic derived special polyol having a functionality of 2 to 2.2.
In one embodiment, the targeting catalyst is one or two components with different proportions, such as fatty amine+carboxyl bismuth, alicyclic amine+carboxyl bismuth, aromatic amine+carboxyl bismuth, alcohol amine+carboxyl bismuth, ammonium salt compound+carboxyl bismuth, and the like.
In one embodiment, the modified silane coupling agent is a coupling agent that KH550 modifies KH 560.
In one embodiment, the aliphatic isocyanate is one or a mixture of two of hexamethylene diisocyanate and isophorone diisocyanate according to different proportions.
The beneficial effects of the invention are as follows: the waterproof coating prepared by the preparation method of the waterproof coating has the advantages of high peel strength of a base layer, puncture resistance and no bulge of a coating film in a high-temperature and high-humidity environment.
And has the following outstanding characteristics:
(1) The castor oil polyether polyol is selected, so that the unit material is characterized in that the stripping performance of the polyurethane waterproof coating to the base layer can be greatly enhanced after the unit material participates in the reaction in the system;
(2) The targeting catalyst has the targeting characteristic of not catalyzing the reaction of micro-moisture in air and-NCO, and a plurality of latent curing agents are not needed to be added to eliminate bubbles, so that the economy of materials is improved, the preparation process is more convenient, the adverse phenomena of bubbles, bulges and the like of a coating in a high-humidity environment are effectively avoided by adding the targeting catalyst, and the waterproof coating is more compact and has strong adhesive force;
(3) The modified silane coupling agent is a coupling agent which carries out chemical modification on KH560 through KH550, reduces the activity of functional groups on a molecular main chain through the change of a chemical structure, participates in a reaction in a polyurethane system after being added, and can not only endow a material with good weather resistance and adhesive force, but also relatively promote the curing of a coating in the film-forming curing process;
(4) By adding the natural plant ester plasticizer, the natural plant ester molecules are inserted into the resin molecular chains, on one hand, the polar ester groups of the plant ester and the polar groups of the resin are mutually well mutually soluble and are not mutually repelled, so that the action force between the macromolecules of the resin is weakened, the plasticity is increased, the material is endowed with better flexibility, the waterproof coating can resist severe cold at the temperature of minus 57 ℃, the natural grease does not contain harmful metal and o-benzene substances, the compatibility with the resin is good, the plasticizing effect is excellent, the flame retardant and the electric insulation effect of the product is excellent, and the flame retardant and the electric insulation effect of the product are realized. Replaces some common plasticizers at present, such as DOP, DBP, DOTP, DIDP, chlorinated paraffin and the like.
Detailed Description
For ease of understanding, the invention is further described below in connection with examples;
the raw materials used are as follows:
polytetrahydrofuran polyol, the molecular structure of which consists of tetrahydrofuran ring and polyol containing hydroxyl group, is commercially available;
castor oil polyether polyol, which is a polymer obtained by the condensation reaction of ricinoleic acid and ethylene glycol. The polyurethane foam has good solubility and lower viscosity, so that the polyurethane foam can be widely applied to polyurethane soft foam and is commercially available;
aliphatic isocyanates, commercially available;
the natural plant ester plasticizer is a green nontoxic environment-friendly plasticizer which is produced by taking imported high-quality grease as a raw material and performing a series of chemical reactions, and the raw material of the plant ester plasticizer product is derived from the natural grease and does not contain harmful metals and o-benzene substances, so that the plant ester plasticizer product is commercially available;
nano silica fume powder, which is a nano powder material produced by high-temperature carbonization reaction of calcium limestone and silicon dioxide, and is commercially available;
hydrophobic nano fumed silica, which is typically a post-treated product. Different types of gas phase method or precipitation method silicon dioxide can be selected as raw materials, and the silicon hydroxyl group reacts with a proper compound; this product is hydrophobic due to the surface attachment of non-hydrolytic methyl groups. Unlike the original hydrophilic silica, the hydrophobic fumed silica is not wettable by water. Although the hydrophobic fumed silica has a density greater than that of water, they can float on the water surface. After hydrophobization, the amount of absorbed moisture is greatly reduced compared with the original hydrophilic fumed silica.
Antioxidants, for example, the coating antioxidant 168 may be used, or phenolic antioxidants such as antioxidants 1010 and 1076 may be used in combination, and these antioxidants are commercially available;
a modified silane coupling agent; commercially available coupling agents are used here, preferably KH550 modified KH 560;
targeting the catalyst; is one or two components with different proportions of fatty amine+carboxyl bismuth, alicyclic amine+carboxyl bismuth, aromatic amine+carboxyl bismuth, alcohol amine+carboxyl bismuth, ammonium salt compound+carboxyl bismuth and the like.
The various raw material components selected are the following components (mass, kg):
the following production process is adopted:
s1, firstly, pumping polytetrahydrofuran polyol, castor oil polyether polyol, natural plant ester plasticizer, nano silica fume powder, hydrophobic nano fumed silica and antioxidant into a reaction kettle, heating to 100-120 ℃, and keeping the reaction kettle under vacuum of-0.09-0.1 MPa for continuous stirring for 3 hours;
s2, cooling to 70 ℃, adding aliphatic isocyanate, heating to 85-95 ℃ under the protection of nitrogen, and continuously stirring for reacting for 3 hours;
s3, then cooling to 75 ℃, dropwise adding a modified silane coupling agent, and keeping the temperature of 75 ℃ for continuous stirring reaction for 1 hour;
s4, finally cooling to below 60 ℃, adding a targeting catalyst, stirring and reacting for 1 hour, and discharging to prepare the super-adhesive puncture-resistant polyurethane waterproof coating.
And respectively obtaining a first waterproof coating, a second waterproof coating, a third waterproof coating and a fourth waterproof coating.
The following table is a table of various index conditions for the above various waterproof coatings as compared to various existing waterproof materials;
in the above examples, it was confirmed that 10 to 20 parts of polytetrahydrofuran polyol, 15 to 25 parts of castor oil polyether polyol, 10 to 20 parts of aliphatic isocyanate, 0.1 to 0.8 part of targeting catalyst, 2 to 7 parts of modified silane coupling agent, 15 to 30 parts of nano silica fume powder, 2 to 10 parts of hydrophobic nano fumed silica, 5 to 15 parts of natural plant ester plasticizer and 0.5 to 3 parts of antioxidant were used; the waterproof coating which can be obtained according to the production process has the advantages of high base layer peeling strength, puncture resistance and no bulge of a coating film under the high-temperature and high-humidity environment;
and proved to be 15 parts of polytetrahydrofuran polyol, 20 parts of castor oil polyether polyol, 15 parts of aliphatic isocyanate, 0.65 part of targeting catalyst, 5 parts of modified silane coupling agent, 22 parts of nano silica fume powder, 5.5 parts of hydrophobic nano fumed silica, 10 parts of natural plant ester plasticizer and 1.7 parts of antioxidant; the waterproof coating obtained by the production process has more excellent properties in breaking elongation performance, concrete peeling strength, puncture resistance and tearing strength.
In one embodiment, embodiment 1A.
Repeating the production process, wherein the castor oil polyol is castor oil and special polyol with the functionality of 2-2.2 obtained by aliphatic derivatization, and obtaining the fifth waterproof coating.
In one embodiment, embodiment 2A.
Repeating the production process, wherein the targeting catalyst is one or two components of aliphatic amine, carboxyl bismuth, alicyclic amine, carboxyl bismuth, aromatic amine, carboxyl bismuth, alcohol amine, carboxyl bismuth, ammonium salt compound, carboxyl bismuth and the like in different proportions, so as to obtain the sixth waterproof coating.
In one embodiment, embodiment 3A.
Repeating the production process, wherein the aliphatic isocyanate is one or a mixture of two of hexamethylene diisocyanate and isophorone diisocyanate according to different proportions, and obtaining the seventh waterproof coating.
The following table is a table of various index cases of the waterproof coating performance;
in conclusion, in the case of the above-described raw material replacement, that is, in the case of using the replacement raw materials in the above-described examples 1A, 2A, 3A, the waterproof coating material obtained in the present invention has more excellent properties.
In some embodiments, for example; the castor oil polyol used is other castor oil polyol than the specific polyol of functionality of 2 to 2.2 in the present invention, and the above-described effect cannot be obtained.
In some embodiments, for example; the target catalyst is other catalysts, but the invention is not one or two components with different proportions in fatty amine+carboxyl bismuth, alicyclic amine+carboxyl bismuth, aromatic amine+carboxyl bismuth, alcohol amine+carboxyl bismuth, ammonium salt compound+carboxyl bismuth, and the like, so that the performance of the produced waterproof coating cannot obtain the effect of the invention.
In some embodiments, for example; the aliphatic isocyanate is other aliphatic isocyanate, but not one or a mixture of two of hexamethylene diisocyanate and isophorone diisocyanate according to different proportions in the invention, so that the produced waterproof coating has poor performance.
In conclusion, in the case of the above-described raw material substitution, the waterproof coating material obtained by the present invention has more excellent properties.
In one embodiment, embodiment 4A.
The weight portions of the used targeting catalyst are that alicyclic amine, aromatic amine, alcohol amine, ammonium salt compound and bismuth carboxylate=2:2:3:3:2:6, namely the targeting catalyst contains alicyclic amine, aromatic amine, alcohol amine, ammonium salt compound and bismuth carboxylate, and the produced waterproof coating has the advantage of stronger peeling resistance.
In one embodiment, embodiment 5A.
The mass parts of the used targeting catalyst are fatty amine: alicyclic amines: aromatic amines: alcohol amine: ammonium salt compound: bismuth carboxylate=2:2:3:3:2:10, namely the targeting catalyst contains alicyclic amine, aromatic amine, alcohol amine, ammonium salt compound and bismuth carboxylate, the produced waterproof coating has the advantages of stronger puncture resistance and tear strength.
Claims (6)
1. A preparation method of an ultra-adhesion and puncture-resistant polyurethane waterproof coating is characterized by comprising the following steps of:
the raw materials used comprise the following components in parts by weight:
10-20 parts of polytetrahydrofuran polyol,
15-25 parts of castor oil polyether polyol,
10-20 parts of aliphatic isocyanate,
0.1 to 0.8 part of targeted catalyst,
2-7 parts of modified silane coupling agent,
15-30 parts of nano silica fume powder,
2-10 parts of hydrophobic nanometer fumed silica,
5-15 parts of natural plant ester plasticizer,
0.5-3 parts of antioxidant;
the puncture-resistant polyurethane waterproof paint is prepared by adopting a one-pot stepped preparation process, and the specific preparation process is as follows:
s1, firstly, pumping polytetrahydrofuran polyol, castor oil polyether polyol, natural plant ester plasticizer, nano silica fume powder, hydrophobic nano fumed silica and antioxidant into a reaction kettle, heating to 100-120 ℃, and keeping the reaction kettle under vacuum of-0.09-0.1 MPa for continuous stirring for 3 hours;
s2, cooling to 70 ℃, adding aliphatic isocyanate, heating to 85-95 ℃ under the protection of nitrogen, and continuously stirring for reaction for 3 hours;
s3, then cooling to 75 ℃, dropwise adding a modified silane coupling agent, and keeping the temperature of 75 ℃ for continuous stirring reaction for 1 hour;
s4, finally cooling to below 60 ℃, adding a targeting catalyst, stirring and reacting for 1 hour, and discharging to prepare the super-adhesive puncture-resistant polyurethane waterproof coating.
2. The method for preparing the ultra-adhesive and puncture-resistant polyurethane waterproof paint according to claim 1, which is characterized in that: the castor oil polyol is castor oil and aliphatic derivative special polyol with the functionality of 2-2.2.
3. The method for preparing the ultra-adhesive and puncture-resistant polyurethane waterproof paint according to claim 1, which is characterized in that: the targeted catalyst is one or two components with different proportions, such as fatty amine+carboxyl bismuth, alicyclic amine+carboxyl bismuth, aromatic amine+carboxyl bismuth, alcohol amine+carboxyl bismuth, ammonium salt compound+carboxyl bismuth, and the like.
4. The method for preparing the ultra-adhesive and puncture-resistant polyurethane waterproof paint according to claim 1, which is characterized in that: the modified silane coupling agent is KH550 modified KH560 coupling agent.
5. The method for preparing the ultra-adhesive and puncture-resistant polyurethane waterproof paint according to claim 1, which is characterized in that: the aliphatic isocyanate is one or a mixture of two of hexamethylene diisocyanate and isophorone diisocyanate according to different proportions.
6. The method for preparing the ultra-adhesive and puncture-resistant polyurethane waterproof paint according to claim 1, which is characterized in that: the raw materials used comprise the following components in parts by weight:
15 parts of polytetrahydrofuran polyol,
20 parts of castor oil polyether polyol,
15 parts of aliphatic isocyanate,
0.65 part of targeted catalyst,
5 parts of modified silane coupling agent,
22 parts of nano silica fume powder,
5.5 parts of hydrophobic nanometer fumed silica,
10 parts of natural plant ester plasticizer,
1.7 parts of antioxidant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311597627.5A CN117844362A (en) | 2023-11-28 | 2023-11-28 | Preparation method of super-adhesion and puncture-resistant polyurethane waterproof paint |
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