CN113388322A - Polyurethane waterproof coating and preparation method thereof, and bi-component polyurethane waterproof coating and preparation method thereof - Google Patents
Polyurethane waterproof coating and preparation method thereof, and bi-component polyurethane waterproof coating and preparation method thereof Download PDFInfo
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- CN113388322A CN113388322A CN202110723965.3A CN202110723965A CN113388322A CN 113388322 A CN113388322 A CN 113388322A CN 202110723965 A CN202110723965 A CN 202110723965A CN 113388322 A CN113388322 A CN 113388322A
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- 238000000576 coating method Methods 0.000 title claims abstract description 95
- 239000011248 coating agent Substances 0.000 title claims abstract description 93
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 74
- 239000004814 polyurethane Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 128
- 229920000570 polyether Polymers 0.000 claims abstract description 128
- 229920005862 polyol Polymers 0.000 claims abstract description 127
- 150000003077 polyols Chemical class 0.000 claims abstract description 127
- 239000000463 material Substances 0.000 claims abstract description 92
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 238000011049 filling Methods 0.000 claims abstract description 40
- 239000004014 plasticizer Substances 0.000 claims abstract description 40
- 239000002904 solvent Substances 0.000 claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000002270 dispersing agent Substances 0.000 claims abstract description 25
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 42
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 38
- 229910052791 calcium Inorganic materials 0.000 claims description 38
- 239000011575 calcium Substances 0.000 claims description 38
- 239000002518 antifoaming agent Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 11
- 230000018044 dehydration Effects 0.000 claims description 11
- 238000006297 dehydration reaction Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 241000276489 Merlangius merlangus Species 0.000 claims 2
- 238000012360 testing method Methods 0.000 description 27
- 238000000034 method Methods 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- VMGAPWLDMVPYIA-HIDZBRGKSA-N n'-amino-n-iminomethanimidamide Chemical compound N\N=C\N=N VMGAPWLDMVPYIA-HIDZBRGKSA-N 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- BOLDJAUMGUJJKM-LSDHHAIUSA-N renifolin D Natural products CC(=C)[C@@H]1Cc2c(O)c(O)ccc2[C@H]1CC(=O)c3ccc(O)cc3O BOLDJAUMGUJJKM-LSDHHAIUSA-N 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The application discloses a polyurethane waterproof coating and a preparation method thereof, and a bi-component polyurethane waterproof coating and a preparation method thereof, wherein the bi-component polyurethane waterproof coating comprises a material A and a material B; the component A comprises the following components in parts by weight: 10-15 parts of plasticizer, 5-10 parts of filling oil, 45-55 parts of polyether polyol A, 10-20 parts of polyether polyol B, 15-20 parts of diphenylmethane diisocyanate, 0.1-1 part of catalyst and 5-8 parts of solvent oil; the material B comprises the following components in parts by weight: 5-10 parts of plasticizer, 5-10 parts of filling oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh heavy calcium carbonate, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh heavy calcium carbonate, defoamer, dispersant, catalyst, solvent oil and curing agent; the mass ratio of the material A to the material B is 1: (2-4). Which can perform multiple functions.
Description
Technical Field
The application relates to a waterproof coating and a preparation technology thereof, in particular to a polyurethane waterproof coating and a preparation method thereof, and a bi-component polyurethane waterproof coating and a preparation method thereof.
Background
The polyurethane waterproof paint belongs to a chemical reaction type waterproof paint, is a rubber-like high-elasticity coating film after being cured, has no seam on the whole coating film, is called as a liquid coiled material in the industry because of the excellent comprehensive performance, is widely applied in the world, and is particularly suitable for waterproofing special-shaped parts. The polyurethane waterproof coating is divided into a single-component polyurethane waterproof coating and a two-component polyurethane waterproof coating according to the composition and the curing mechanism of the polyurethane waterproof coating. The double-component polyurethane waterproof coating is widely applied due to the characteristics of compact film, excellent performance, one-time thick coating, simple production, low price and the like.
With the increasing requirements of waterproof engineering on waterproofness, including important engineering such as railways, tunnels, bridges and the like, the tensile strength of polyurethane is required to be more than 6.0MPA, and the extension is required to be more than 450%. For building, more and more customers have higher and higher requirements on the performance of the waterproof coating at the bottom of the balcony and the toilet. In the traditional sense, the bi-component polyurethane waterproof coating is a bi-component reaction curing type synthetic polymer waterproof coating, the first material is generally a polyurethane prepolymer obtained by the polycondensation reaction of polyether and isocyanate, and the second component is composed of a filler, a curing agent and a filler, and when the waterproof coating is used, the filler, the curing agent and the filler are added according to a certain proportion and are uniformly stirred, so that the multifunctional use cannot be met.
Disclosure of Invention
The purpose of this application lies in: provides a multipurpose double-component polyurethane waterproof coating and a preparation method thereof, and also provides a polyurethane waterproof coating and a preparation method thereof.
The application is realized by the following technical scheme:
a polyurethane waterproof coating comprises the following components in parts by weight:
5-10 parts of plasticizer, 5-10 parts of filling oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh heavy calcium carbonate, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh heavy calcium carbonate, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant, 0.1-1 part of catalyst, 4-8 parts of solvent oil and 0.5-1 part of curing agent; wherein, the number average molecular weight of the polyether polyol A is 3000-6000Da, and the number average molecular weight of the polyether polyol C is 1000-3000 Da.
A preparation method of a polyurethane waterproof coating comprises the following steps:
according to the weight parts of the components in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for 3-3.5 hours, the temperature is reduced to 70-75 ℃ after the reaction is finished, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the material can be discharged after the stirring is carried out for 1-1.5 hours at the temperature of 60-65 ℃.
A double-component polyurethane waterproof coating comprises a material A and a material B;
the component A comprises the following components in parts by weight: 10-15 parts of plasticizer, 5-10 parts of filling oil, 45-55 parts of polyether polyol A, 10-20 parts of polyether polyol B, 15-20 parts of diphenylmethane diisocyanate, 0.1-1 part of catalyst and 5-8 parts of solvent oil;
the material B comprises the following components in parts by weight: 5-10 parts of plasticizer, 5-10 parts of filling oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh heavy calcium carbonate, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh heavy calcium carbonate, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant, 0.1-1 part of catalyst, 4-8 parts of solvent oil and 0.5-1 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 3000-6000Da, the data molecular weight of the polyether polyol B is 2000-4000Da, the number average molecular weight of the polyether polyol C is 1000-3000Da, and the mass ratio of the material A to the material B is 1: (2-4).
A preparation method of a two-component polyurethane waterproof coating comprises the following steps:
preparation of a material A: according to the weight parts of the components of the material A in the polyurethane waterproof coating, adding a plasticizer, filling oil, polyether polyol A and polyether polyol B into a reaction kettle, heating to 120-125 ℃, maintaining the pressure at 0.08-0.09MPA for dehydration for 2.5-3 hours, cooling to 80-82 ℃, adding diphenylmethane diisocyanate diluted by solvent oil for reaction for 3-3.5 hours, cooling to 70-75 ℃, adding a catalyst for reaction for 2-2.5 hours, cooling to 60-65 ℃, uniformly stirring, and discharging;
preparing a material B: according to the weight parts of the component B in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for 3-3.5 hours, the temperature is reduced to 70-75 ℃ after the reaction is finished, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the material is discharged after the stirring is carried out for 1-1.5 hours at the temperature of 60-65 ℃.
Compared with the prior art, the method has the following beneficial technical effects:
this application is directed against different waterproof positions, can use according to the different proportions of first, second material as required, realizes multiple functions. The traditional double-component polyurethane waterproof coating is stirred and used according to a certain proportion, and can only meet the requirement of one performance index. The innovative multipurpose double-component polyurethane waterproof coating can meet the requirements of a plurality of performance indexes, thereby meeting different construction requirements. For example, the second material can be used on the side of a kitchen and toilet when used alone, and the first and second materials can be used on the bottom of the kitchen and toilet after being mixed and stirred uniformly according to a certain proportion.
Detailed Description
All of the features disclosed in this specification, or all of the steps of any method or process so disclosed, may be combined in any combination, except features and/or steps which are mutually exclusive, unless expressly stated otherwise, with other alternative features which are equivalent or similar in purpose, i.e. each feature is an embodiment of a range of equivalent or similar features, unless expressly stated otherwise.
The contents of the present application will be described in further detail with reference to examples.
Example 1
The polyurethane waterproof coating comprises the following components in parts by weight:
5 parts of plasticizer, 5 parts of filling oil, 20 parts of polyether polyol A, 10 parts of polyether polyol C, 10 parts of diphenylmethane diisocyanate, 20 parts of 800-mesh heavy calcium, 25 parts of 600-mesh talcum powder, 15 parts of 400-mesh heavy calcium, 0.1 part of defoaming agent, 0.1 part of dispersing agent, 0.1 part of catalyst, 4 parts of solvent oil and 0.5 part of curing agent; wherein the number average molecular weight of the polyether polyol A is 3000Da, and the number average molecular weight of the polyether polyol C is 1000 Da.
Example 2
The polyurethane waterproof coating comprises the following components in parts by weight:
7 parts of plasticizer, 7 parts of filling oil, 23 parts of polyether polyol A, 7 parts of polyether polyol C, 7 parts of diphenylmethane diisocyanate, 17 parts of 800-mesh heavy calcium, 23 parts of 600-mesh talcum powder, 13 parts of 400-mesh heavy calcium, 0.6 part of defoaming agent, 0.6 part of dispersing agent, 0.6 part of catalyst, 6 parts of solvent oil and 0.7 part of curing agent; wherein the number average molecular weight of the polyether polyol A is 4000Da, and the number average molecular weight of the polyether polyol C is 2000 Da.
Example 3
The polyurethane waterproof coating comprises the following components in parts by weight:
10 parts of plasticizer, 10 parts of filling oil, 25 parts of polyether polyol A, 5 parts of polyether polyol C, 5 parts of diphenylmethane diisocyanate, 15 parts of 800-mesh heavy calcium, 20 parts of 600-mesh talcum powder, 10 parts of 400-mesh heavy calcium, 1 part of defoaming agent, 1 part of dispersing agent, 1 part of catalyst, 8 parts of solvent oil and 1 part of curing agent; wherein the number average molecular weight of the polyether polyol A is 6000Da, and the number average molecular weight of the polyether polyol C is 3000 Da.
Example 4
The preparation method of the polyurethane waterproof coating of the embodiment 1 comprises the following steps:
according to the weight parts of the components in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for three hours, the temperature is reduced to 70-75 ℃ after the reaction is completed, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the mixture is stirred for 1-1.5 hours at the temperature of 60-65 ℃ and then discharged.
Example 5
The preparation method of the polyurethane waterproof coating of embodiment 2 comprises the following steps:
according to the weight parts of the components in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for three hours, the temperature is reduced to 70-75 ℃ after the reaction is completed, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the mixture is stirred for 1-1.5 hours at the temperature of 60-65 ℃ and then discharged.
Example 6
The preparation method of the polyurethane waterproof coating of embodiment 3 comprises the following steps:
according to the weight parts of the components in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for three hours, the temperature is reduced to 70-75 ℃ after the reaction is completed, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the mixture is stirred for 1-1.5 hours at the temperature of 60-65 ℃ and then discharged.
Example 7
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 15 parts of plasticizer, 7 parts of filling oil, 55 parts of polyether polyol A, 10 parts of polyether polyol B, 15 parts of diphenylmethane diisocyanate, 0.1 part of catalyst and 5 parts of solvent oil;
the material B comprises the following components in parts by weight: 5 parts of plasticizer, 5 parts of filling oil, 20 parts of polyether polyol A, 10 parts of polyether polyol C, 10 parts of diphenylmethane diisocyanate, 20 parts of 800-mesh heavy calcium, 25 parts of 600-mesh talcum powder, 15 parts of 400-mesh heavy calcium, 0.1 part of defoaming agent, 0.1 part of dispersing agent, 0.1 part of catalyst, 4 parts of solvent oil and 0.5 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 3000Da, the data molecular weight of the polyether polyol B is 2000Da, the number average molecular weight of the polyether polyol C is 1000Da, and the mass ratio of the material A to the material B is 1: 2.
example 8
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 15 parts of plasticizer, 7 parts of filling oil, 55 parts of polyether polyol A, 10 parts of polyether polyol B, 15 parts of diphenylmethane diisocyanate, 0.1 part of catalyst and 5 parts of solvent oil;
the material B comprises the following components in parts by weight: 5 parts of plasticizer, 5 parts of filling oil, 20 parts of polyether polyol A, 10 parts of polyether polyol C, 10 parts of diphenylmethane diisocyanate, 20 parts of 800-mesh heavy calcium, 25 parts of 600-mesh talcum powder, 15 parts of 400-mesh heavy calcium, 0.1 part of defoaming agent, 0.1 part of dispersing agent, 0.1 part of catalyst, 4 parts of solvent oil and 0.5 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 3000Da, the data molecular weight of the polyether polyol B is 2000Da, the number average molecular weight of the polyether polyol C is 1000Da, and the mass ratio of the material A to the material B is 1: 3.
example 9
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 15 parts of plasticizer, 7 parts of filling oil, 55 parts of polyether polyol A, 10 parts of polyether polyol B, 15 parts of diphenylmethane diisocyanate, 0.1 part of catalyst and 5 parts of solvent oil;
the material B comprises the following components in parts by weight: 5 parts of plasticizer, 5 parts of filling oil, 20 parts of polyether polyol A, 10 parts of polyether polyol C, 10 parts of diphenylmethane diisocyanate, 20 parts of 800-mesh heavy calcium, 25 parts of 600-mesh talcum powder, 15 parts of 400-mesh heavy calcium, 0.1 part of defoaming agent, 0.1 part of dispersing agent, 0.1 part of catalyst, 4 parts of solvent oil and 0.5 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 3000Da, the data molecular weight of the polyether polyol B is 2000Da, the number average molecular weight of the polyether polyol C is 1000Da, and the mass ratio of the material A to the material B is 1: 4.
example 10
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 12 parts of plasticizer, 10 parts of filling oil, 50 parts of polyether polyol A, 15 parts of polyether polyol B, 17 parts of diphenylmethane diisocyanate, 0.6 part of catalyst and 6 parts of solvent oil;
the material B comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of filling oil, 23 parts of polyether polyol A, 7 parts of polyether polyol C, 7 parts of diphenylmethane diisocyanate, 17 parts of 800-mesh heavy calcium, 23 parts of 600-mesh talcum powder, 13 parts of 400-mesh heavy calcium, 0.6 part of defoaming agent, 0.6 part of dispersing agent, 0.6 part of catalyst, 6 parts of solvent oil and 0.7 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 4000Da, the data molecular weight of the polyether polyol B is 3000Da, the number average molecular weight of the polyether polyol C is 2000Da, and the mass ratio of the material A to the material B is 1: 2.
example 11
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 12 parts of plasticizer, 10 parts of filling oil, 50 parts of polyether polyol A, 15 parts of polyether polyol B, 17 parts of diphenylmethane diisocyanate, 0.6 part of catalyst and 6 parts of solvent oil;
the material B comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of filling oil, 23 parts of polyether polyol A, 7 parts of polyether polyol C, 7 parts of diphenylmethane diisocyanate, 17 parts of 800-mesh heavy calcium, 23 parts of 600-mesh talcum powder, 13 parts of 400-mesh heavy calcium, 0.6 part of defoaming agent, 0.6 part of dispersing agent, 0.6 part of catalyst, 6 parts of solvent oil and 0.7 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 4000Da, the data molecular weight of the polyether polyol B is 3000Da, the number average molecular weight of the polyether polyol C is 2000Da, and the mass ratio of the material A to the material B is 1: 3.
example 12
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 12 parts of plasticizer, 10 parts of filling oil, 50 parts of polyether polyol A, 15 parts of polyether polyol B, 17 parts of diphenylmethane diisocyanate, 0.6 part of catalyst and 6 parts of solvent oil;
the material B comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of filling oil, 23 parts of polyether polyol A, 7 parts of polyether polyol C, 7 parts of diphenylmethane diisocyanate, 17 parts of 800-mesh heavy calcium, 23 parts of 600-mesh talcum powder, 13 parts of 400-mesh heavy calcium, 0.6 part of defoaming agent, 0.6 part of dispersing agent, 0.6 part of catalyst, 6 parts of solvent oil and 0.7 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 4000Da, the data molecular weight of the polyether polyol B is 3000Da, the number average molecular weight of the polyether polyol C is 2000Da, and the mass ratio of the material A to the material B is 1: 4.
example 13
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 10 parts of plasticizer, 5 parts of filling oil, 45 parts of polyether polyol A, 20 parts of polyether polyol B, 20 parts of diphenylmethane diisocyanate, 1 part of catalyst and 8 parts of solvent oil;
the material B comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of filling oil, 25 parts of polyether polyol A, 5 parts of polyether polyol C, 5 parts of diphenylmethane diisocyanate, 15 parts of 800-mesh heavy calcium, 20 parts of 600-mesh talcum powder, 10 parts of 400-mesh heavy calcium, 1 part of defoaming agent, 1 part of dispersing agent, 1 part of catalyst, 8 parts of solvent oil and 1 part of curing agent;
the number average molecular weight of the polyether polyol A is 6000Da, the data molecular weight of the polyether polyol B is 4000Da, the number average molecular weight of the polyether polyol C is 3000Da, and the mass ratio of the material A to the material B is 1: 2.
example 14
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 10 parts of plasticizer, 5 parts of filling oil, 45 parts of polyether polyol A, 20 parts of polyether polyol B, 20 parts of diphenylmethane diisocyanate, 1 part of catalyst and 8 parts of solvent oil;
the material B comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of filling oil, 25 parts of polyether polyol A, 5 parts of polyether polyol C, 5 parts of diphenylmethane diisocyanate, 15 parts of 800-mesh heavy calcium, 20 parts of 600-mesh talcum powder, 10 parts of 400-mesh heavy calcium, 1 part of defoaming agent, 1 part of dispersing agent, 1 part of catalyst, 8 parts of solvent oil and 1 part of curing agent;
the number average molecular weight of the polyether polyol A is 6000Da, the data molecular weight of the polyether polyol B is 4000Da, the number average molecular weight of the polyether polyol C is 3000Da, and the mass ratio of the material A to the material B is 1: 3.
example 15
The application discloses a bi-component polyurethane waterproof coating, which comprises a material A and a material B;
the component A comprises the following components in parts by weight: 10 parts of plasticizer, 5 parts of filling oil, 45 parts of polyether polyol A, 20 parts of polyether polyol B, 20 parts of diphenylmethane diisocyanate, 1 part of catalyst and 8 parts of solvent oil;
the material B comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of filling oil, 25 parts of polyether polyol A, 5 parts of polyether polyol C, 5 parts of diphenylmethane diisocyanate, 15 parts of 800-mesh heavy calcium, 20 parts of 600-mesh talcum powder, 10 parts of 400-mesh heavy calcium, 1 part of defoaming agent, 1 part of dispersing agent, 1 part of catalyst, 8 parts of solvent oil and 1 part of curing agent;
the number average molecular weight of the polyether polyol A is 6000Da, the data molecular weight of the polyether polyol B is 4000Da, the number average molecular weight of the polyether polyol C is 3000Da, and the mass ratio of the material A to the material B is 1: 4.
examples 16 to 24
Embodiment 7-15A method for preparing a two-component polyurethane waterproofing coating, comprising the steps of:
preparation of a material A: according to the weight parts of the components of the material A in the polyurethane waterproof coating, adding a plasticizer, filling oil, polyether polyol A and polyether polyol B into a reaction kettle, heating to 120-125 ℃, maintaining the pressure at 0.08-0.09MPA for dehydration for 2.5-3 hours, cooling to 80-82 ℃, adding diphenylmethane diisocyanate diluted by solvent oil for reaction for 3-3.5 hours, cooling to 70-75 ℃, adding a catalyst for reaction for 2-2.5 hours, cooling to 60-65 ℃, uniformly stirring, and discharging;
preparing a material B: according to the weight parts of the component B in the polyurethane waterproof coating, a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800-mesh heavy calcium, 600-mesh talcum powder and 400-mesh heavy calcium are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is maintained at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, diphenylmethane diisocyanate diluted by solvent oil is added for reaction for 3-3.5 hours, the temperature is reduced to 70-75 ℃ after the reaction is finished, then a catalyst is added, a curing agent is added after the reaction is carried out for 2-2.5 hours, and the material is discharged after the stirring is carried out for 1-1.5 hours at the temperature of 60-65 ℃.
The properties of the polyurethane waterproof coating prepared by the polyurethane waterproof coating and the preparation method thereof, the two-component polyurethane waterproof coating prepared by the two-component polyurethane waterproof coating and the preparation method thereof are further described below.
The method for obtaining the experimental data, the measuring instrument, the experimental conditions, the parameters and the like are specifically shown in the following text.
The standard laboratory test conditions are as follows:
temperature: (23 ± 2) ° c, relative humidity: (20 ± 10)%;
(II) the measuring instrument comprises the following instruments:
solid content:
tensile property:
a tensile testing machine: the measured value is between (15-85)% of the measuring range, the indicating precision is not lower than 1%, and the extension range is more than 500 mm;
a sheet punching machine and a dumbbell I-shaped cutter meeting the GB/T528 requirement;
a thickness meter: the diameter of a contact surface is 6mm, the unit area pressure is 0.02MPa, and the division value is 0.01 mm;
drying time:
a timer: dividing for at least 1 min;
aluminum plate: specification 120X50X (1-3) mm;
wire rod coater: 200 mu m;
the method for measuring the experimental data comprises the following steps:
solid content:
after the samples are fully stirred, 10 +/-1 g of the samples are poured into a dried and weighed culture dish (m0) with the diameter of 65 +/-5 mm to be strickled off, the samples are immediately weighed (m1) and then placed for 24 hours under the standard experimental conditions, the samples are placed into an oven with the temperature of 120 +/-2 ℃, the temperature is kept for 3 hours, the samples are taken out and placed into a dryer to be cooled for 2 hours, and then the samples are weighed (m 2); the solid content calculation mode is as follows:
surface drying time:
placing an aluminum plate, a tool and a coating for more than 24 hours under standard conditions before an experiment;
under standard experimental conditions, a wire bar coater was used to coat a sample, which was uniformly mixed according to the manufacturer's requirements, on an aluminum plate to prepare a coating film having a coating area of (100X 50) mm, and the end time of coating was recorded, and the time was recorded from the start of mixing for a multi-component coating; after standing for a period of time, wiping fingers with absolute ethyl alcohol, slightly touching the surface of the coating film with the fingers within a range of not less than 10mm from the edge of the test piece, and recording the time, wherein the time from the beginning to the end of the test is the surface drying time if no coating is attached to the fingers;
the actual drying time is as follows:
under standard experimental conditions, a wire bar coater was used to coat a sample, which was uniformly mixed according to the manufacturer's requirements, on an aluminum plate to prepare a coating film having a coating area of (100X 50) mm, and the end time of coating was recorded, and the time was recorded from the start of mixing for a multi-component coating; standing for a period of time, cutting the coating film by using a blade within a range of not less than 10mm from the edge of the test piece, if no finger is attached to the bottom layer and the film, recording the time, and taking the time from the beginning to the end of the test as the actual drying time;
tensile property:
the single-component waterproof coating is uniformly mixed to be used as a test piece, the multi-component waterproof coating is accurately weighed according to the proportion specified by a manufacturer to be uniformly mixed to be used as a test material, the product is fully stirred for 5min after being mixed, the product is poured into a mold frame under the condition of not mixing air bubbles, the mold frame is not warped, the surface of the mold frame is smooth, the mold frame can be conveniently demolded, a demolding agent can be used for treatment before coating, and the specific coating preparation conditions are as follows: at the temperature: (23 ± 2) ° c, relative humidity: (20 +/-10)%, curing for 96h, and then demolding, turning over and curing for 72 h;
cutting the coating film into dumbbell I-shaped test pieces meeting the GB/T528 requirement, marking parallel marked lines with the distance of 25mm, measuring the thicknesses of the middle and two ends of the test piece by using a thickness meter, and taking the arithmetic mean value as the thickness of the test piece. Adjusting the distance between clamps of a tensile tester to be about 70mm, clamping a test piece on the tester, keeping the center line of the test piece in the length direction and the center of the clamp of the tester on the same line, stretching the test piece to be broken at a stretching speed of 500 mm/min, recording the maximum load (P) when the test piece is broken and the distance (L1) between lines at the breaking time, accurately measuring the distance to be 0.1mm, testing five test pieces, and abandoning spare parts for supplementary measurement if the test piece is broken outside the marked line;
the tensile properties of the test pieces were calculated according to the formula: TL ═ P/(B × D);
TL- -tensile strength in Mega pascals (MPa);
p- - -maximum pull force in newtons (N);
b- -the width of the middle part of the specimen in millimeters (mm);
d- -specimen thickness in millimeters (mm);
calculation of elongation at break of the test piece: e ═ L1 — L0)/L0 × 100%;
e- -elongation at break,%;
l0- -distance between the starting standard lines of the test piece is 25 mm;
l1- -distance between lines at the time of specimen break in millimeters (mm);
the arithmetic mean of the five test pieces was taken as the experimental result, with the result being accurate to 1%.
The data obtained by testing seven days after the two-component polyurethane waterproof coating prepared by the two-component polyurethane waterproof coating and the preparation method of the two-component polyurethane waterproof coating in examples 7 to 9 is formed into a film are shown in Table 1.
TABLE 1 data table of the two-component polyurethane waterproofing coatings prepared in examples 7 to 9 and the preparation method thereof, which are tested seven days after film formation
The data obtained by testing seven days after the two-component polyurethane waterproof coating prepared by the embodiments 10 to 12 is filmed are shown in Table 2.
TABLE 2 data table of the two-component polyurethane waterproofing paint prepared in examples 10 to 12 and the method for preparing the same, which is obtained by testing seven days after the film is formed
The data obtained by testing seven days after the two-component polyurethane waterproof coating prepared by the two-component polyurethane waterproof coating and the preparation method of the two-component polyurethane waterproof coating in the embodiment 13 to 15 is formed into a film are shown in the table 3.
TABLE 3 tables obtained by testing seven days after the films of the two-component polyurethane waterproofing coatings prepared in examples 13 to 15 and the preparation method thereof were formed
According to the experimental data in tables 1-3, the components are changed when the proportions of the materials A and B are not changed, and the specific examples are as follows: examples 7, 10, 13, examples 8, 11, 14, examples 9, 12, 15. From experimental data: the tensile strength increases with increasing mass specific gravity of polyether polyol B in the formazan, because: as the mass specific gravity of the polyether polyol B in the material A increases, the three-dimensional network structure in the structure is increased, so that the tensile strength is increased, and the extensibility is reduced. When the components of the material A and the material B are not changed, and the proportion is changed, the specific embodiment is as follows: examples 7, 8 and 9, examples 10, 11 and 12, and examples 13, 14 and 15. From experimental data: the tensile strength decreases and the elongation becomes larger as the mass ratio of the polyether polyol B decreases.
When the material A is: when the material B is in a mass ratio of 1 (2-4), the material B can be used for construction of waterproof parts with high requirements on tensile strength and extensibility of the coating on the bottom surface of a toilet.
When the material B, namely the polyurethane waterproof coating prepared by the polyurethane waterproof coating and the preparation method thereof, is used alone, test data after the material B forms a film for seven days are shown in Table 4.
TABLE 4 test data table of the polyurethane waterproofing paints and the polyurethane waterproofing paints prepared by the method of preparing the same according to examples 1 to 3 after forming a film for seven days
According to the experimental data shown in Table 4, as the specific gravity of the polyether polyol A increases, the tensile strength gradually increases and the elongation gradually decreases, because the larger the molecular weight, the larger the intermolecular force, the larger the ultimate tensile strength, and the lower the elongation property.
When the second material is used alone, the second material can be used for the side surface of a toilet and the construction of waterproof parts with low requirement on the tensile strength of the coating.
The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.
Claims (4)
1. The polyurethane waterproof coating is characterized by comprising the following components in parts by weight:
5-10 parts of plasticizer, 5-10 parts of filling oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh heavy calcium carbonate, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh heavy calcium carbonate, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant, 0.1-1 part of catalyst, 4-8 parts of solvent oil and 0.5-1 part of curing agent; wherein, the number average molecular weight of the polyether polyol A is 3000-6000Da, and the number average molecular weight of the polyether polyol C is 1000-3000 Da.
2. A preparation method of a polyurethane waterproof coating is characterized by comprising the following steps:
according to the weight portion of each component in the polyurethane waterproof coating of claim 1, adding a plasticizer, filling oil, a dispersing agent, a defoaming agent, polyether polyol A, polyether polyol C, 800 mesh heavy calcium, 600 mesh talcum powder and 400 mesh heavy calcium into a reaction kettle, heating to 125 ℃, maintaining the pressure at 0.08-0.09MPA for dehydration for 2.5-3 hours, cooling to 80-82 ℃, adding diphenylmethane diisocyanate diluted by solvent oil for reaction for 3-3.5 hours, cooling to 70-75 ℃ after the reaction is completed, adding a catalyst, adding a curing agent after the reaction for 2-2.5 hours, stirring for 1-1.5 hours at 60-65 ℃, and discharging.
3. A bi-component polyurethane waterproof coating is characterized by comprising a material A and a material B;
the component A comprises the following components in parts by weight: 10-15 parts of plasticizer, 5-10 parts of filling oil, 45-55 parts of polyether polyol A, 10-20 parts of polyether polyol B, 15-20 parts of diphenylmethane diisocyanate, 0.1-1 part of catalyst and 5-8 parts of solvent oil;
the material B comprises the following components in parts by weight: 5-10 parts of plasticizer, 5-10 parts of filling oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh heavy calcium carbonate, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh heavy calcium carbonate, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant, 0.1-1 part of catalyst, 4-8 parts of solvent oil and 0.5-1 part of curing agent;
wherein the number average molecular weight of the polyether polyol A is 3000-6000Da, the data molecular weight of the polyether polyol B is 2000-4000Da, the number average molecular weight of the polyether polyol C is 1000-3000Da, and the mass ratio of the material A to the material B is 1: (2-4).
4. A preparation method of a bi-component polyurethane waterproof coating is characterized by comprising the following steps:
preparation of a material A: adding plasticizer, filling oil, polyether polyol A and polyether polyol B into a reaction kettle according to the weight parts of the components of the material A in the polyurethane waterproof coating material in the claim 3, heating to 125 ℃, keeping the pressure at 0.08-0.09MPA for dehydration for 2.5-3 hours, cooling to 80-82 ℃, adding diphenylmethane diisocyanate diluted by solvent oil for reaction for 3-3.5 hours, cooling to 70-75 ℃, adding a catalyst for reaction for 2-2.5 hours, cooling to 60-65 ℃, uniformly stirring and discharging;
preparing a material B: according to the weight portion of the component B in the polyurethane waterproof coating material of claim 3, the plasticizer, the filling oil, the dispersant, the defoamer, the polyether polyol A, the polyether polyol C, the 800-mesh coarse whiting, the 600-mesh talcum powder and the 400-mesh coarse whiting are added into a reaction kettle, the temperature is increased to 125 ℃, the pressure is kept at 0.08-0.09MPA for dehydration for 2.5-3 hours, the temperature is reduced to 80-82 ℃, the diphenylmethane diisocyanate diluted by the solvent oil is added for reaction for 3-3.5 hours, the temperature is reduced to 70-75 ℃ after the reaction is finished, the catalyst is added, the curing agent is added after the reaction for 2-2.5 hours, and the material is discharged after the stirring for 1-1.5 hours at the temperature of 60-65 ℃.
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