CN108276895B - Polyurethane non-cured waterproof coating and production process thereof - Google Patents
Polyurethane non-cured waterproof coating and production process thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K2003/387—Borates
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention relates to the field of non-cured coatings, in particular to a polyurethane non-cured waterproof coating and a production process thereof. A polyurethane non-curing waterproof coating is mainly prepared from the following raw materials, by weight, 20-30 parts of isocyanate, 8-15 parts of polyether polyol, 5-10 parts of asphalt, 2-5 parts of rubber materials, 2-5 parts of biomass charcoal, 2-5 parts of mica powder, 1-3 parts of borax, 1-3 parts of a surfactant, 1-3 parts of an amine chain extender and 0.5-3 parts of a leveling agent. The polyurethane non-curing waterproof coating provided by the invention is more environment-friendly, can be directly coated after being heated to more than 80 ℃, is simple and convenient to construct, has excellent bonding strength, self-healing capability and waterproof effect, and can be widely applied to the field of buildings.
Description
Technical Field
The invention relates to the field of non-cured coatings, in particular to a polyurethane non-cured waterproof coating and a production process thereof.
Background
Waterproof coatings are common building materials in the construction field. Commonly used waterproof coatings are polyurethane waterproof coatings and non-curing rubber asphalt waterproof coatings. The polyurethane waterproof coating is a curing type coating, and polyurethane molecules can be cured into a film through moisture in the air or other components after being coated to play a waterproof role; the non-cured rubber asphalt waterproof paint can not be cured into a film after being coated, and can permanently maintain the self characteristics of pressure sensitivity, self-healing property, adhesion and the like.
The polyurethane waterproof coating is simple, convenient, quick, flexible and convenient to construct. The non-cured rubber asphalt waterproof paint is generally used in large-area places, and is relatively difficult to operate due to the fact that details such as melting paint, brushing and the like are involved in the use. In addition, the non-cured rubber asphalt waterproof coating contains more asphalt, so that the environment pollution is serious in the preparation process.
Application number 201410115980.X discloses a non-cured polyurethane waterproof coating and a preparation method thereof, wherein the non-cured polyurethane waterproof coating comprises the following raw materials in percentage by weight: 13-20% of prepolymer, 30-65% of asphalt, 1.0-1.5% of latent curing agent, 3-15% of compatilizer, 2-9% of thermoplastic elastomer and 0-30% of powdery filler, wherein the prepolymer is a reaction composition of polyether and isocyanate. The core of the invention improves the material proportion and the polymerization process of polyurethane, overcomes the problems that the hot-melt asphalt material needs to be heated by a machine and the like, but contains more asphalt and has poor environmental protection.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a polyurethane non-cured waterproof coating which has high bonding strength, can well meet the deformation requirement of a coated part, has good durability and is more environment-friendly.
The second purpose of the invention is to provide a production process of the polyurethane non-cured waterproof coating, the method is simple and convenient to operate, the prepared polyurethane non-cured waterproof coating is stable in performance, and the pollution problem caused by asphalt is reduced.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
a polyurethane non-curing waterproof coating is mainly prepared from the following raw materials, by weight, 20-30 parts of isocyanate, 8-15 parts of polyether polyol, 5-10 parts of asphalt, 2-5 parts of rubber materials, 2-5 parts of biomass charcoal, 2-5 parts of mica powder, 1-3 parts of borax, 1-3 parts of a surfactant, 1-3 parts of an amine chain extender and 0.5-3 parts of a leveling agent.
The polyurethane non-cured waterproof coating provided by the invention takes isocyanate and polyether polyol as main raw materials, asphalt and rubber materials are used as auxiliary materials, borax is specially added, in addition, biomass charcoal, mica powder and some auxiliary materials are specially selected, and the proportioning relation of the components is adjusted, so that the prepared polyurethane non-cured waterproof coating has excellent performance, and the pollution caused by the asphalt in the processing process is effectively prevented due to the fact that the asphalt is greatly reduced. The obtained polyurethane non-curing waterproof coating is in a paste or jelly shape, can be directly coated after being heated to more than 80 ℃, is simple and convenient to construct, has excellent bonding strength, self-healing capability and waterproof effect, and can be widely applied to the field of buildings.
Tests prove that the polyurethane non-cured waterproof coating prepared from the components with specific contents has more excellent performance. Preferably, the coating comprises, by weight, 25-28 parts of isocyanate, 10-12 parts of polyether polyol, 6-7 parts of asphalt, 2-3 parts of rubber materials, 3-4 parts of biomass charcoal, 3-4 parts of mica powder, 2-3 parts of borax, 1-2 parts of surfactants, 1-2 parts of amine chain extenders and 1-2 parts of leveling agents.
Tests show that the performances of the polyurethane non-cured waterproof coating prepared from different polyether polyols have certain difference. Preferably, the polyether polyol is prepared by mixing Y-1900 and PTMEG200 in a weight ratio of 1: 2-5.
If the particle size of the biomass charcoal and the mica powder is too large, the corresponding effect cannot be achieved. Further, the particle sizes of the biomass charcoal and the mica powder are both in a micron grade. 500-1000 mesh biomass charcoal and mica powder are generally selected.
Further, the rubber material is rubber powder.
The invention also provides a production process of the polyurethane non-cured waterproof coating, which comprises the following steps:
(a) mixing the asphalt, the rubber material, the biomass charcoal and the mica powder, heating to 140-160 ℃ under the protection of inert gas, and preserving heat for 20-40 min;
(b) cooling to 80-120 deg.C, adding surfactant, and mixing;
(c) adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting;
(d) and then adding the flatting agent and mixing uniformly to obtain the product.
The production process of the non-cured waterproof polyurethane coating provided by the invention comprises the steps of mixing asphalt, a rubber material, biomass carbon and mica powder, heating to 140-160 ℃, and keeping for a period of time, wherein the asphalt and the rubber material are molten, and the process is carried out in a reaction kettle, wherein the biomass carbon not only can adsorb toxic gas and be used as a filler, but also can play a role of a cross-linking point structure together with the mica; then adding a surfactant to provide a good foundation for participating in the next reaction; adding isocyanate, polyether polyol and borax, uniformly mixing, uniformly distributing all components, adding an amine chain extender for reaction, promoting the reaction of polyether polyol and MDI by the borax, simultaneously crosslinking and mixing other substances, and using biomass charcoal and mica as connecting points between crosslinking points, so that the obtained polyurethane non-cured waterproof coating is paste or jelly, has excellent performance and is convenient to use. The whole process is more environment-friendly, and the obtained polyurethane non-curing waterproof coating has stable performance.
Further, vacuum degassing is further included for 10-30min after the step (a). By vacuum degassing, the extra gas generated in the reaction system is removed, and the uniformity and the connection tightness of the mixing among the components are increased.
Further, in step (c), the reaction is: keeping the temperature at 95-100 ℃ for 1-2 h. Under the condition, all the components are uniformly mixed, all the substances are crosslinked together, the crosslinking reaction of the isocyanate and the polyether polyol is realized, and the crosslinking reaction of the isocyanate and the polyether polyol is also mixed with other substances in a crosslinking way, so that the performance of the obtained reaction product is more excellent.
Further, in the step (d), the temperature is reduced to 55-65 ℃, and then the leveling agent is added.
The leveling agent promotes the coating to form a flat, smooth and uniform coating film in the drying film-forming process, can effectively reduce the surface tension of the coating liquid, improve the leveling property and uniformity of the coating liquid, improve the permeability of the coating liquid, reduce the possibility of generating spots and stains during brushing, increase the coverage property and enable the film to be formed uniformly and naturally. Further, the leveling agent is alkyl modified organic siloxane.
And (d) adding a flatting agent, preserving the heat for 30-60min, and dehydrating.
Adding a leveling agent, and keeping the temperature for a period of time to fully mix and crosslink the components; through dehydration, the polyurethane non-curing waterproof coating with stable performance is obtained.
According to the invention, on the basis of the existing polyurethane waterproof coating and the existing non-cured rubber asphalt waterproof coating, the existing non-cured polyurethane waterproof coating is improved, and multiple tests are carried out to integrate the advantages of the polyurethane waterproof coating and the non-cured rubber asphalt waterproof coating, so that the using amounts of asphalt and rubber materials are greatly reduced, the using amount relation of polyurethane and polyether polyol is adjusted, borax is added, biomass carbon and mica powder are specifically selected and matched, and the components are matched with each other in a synergistic manner, so that the prepared polyurethane non-cured waterproof coating has high bonding strength, can well adapt to the deformation requirement of a coating part, and has good durability. The pollution is reduced due to the great reduction of the contents of asphalt and rubber, and the non-cured waterproof coating is pasty or jelly-shaped, can be in a liquid state after being heated to more than 80 ℃, can be coated, and reduces the coating temperature. The surface of the coating after coating is gradually solidified, but the inner part is still in a non-solidified state,
compared with the prior art, the invention has the beneficial effects that:
(1) the invention provides a polyurethane non-cured waterproof coating, which is an improvement on the existing polyurethane waterproof coating and non-cured rubber asphalt waterproof coating, and is characterized in that the existing non-cured polyurethane waterproof coating is subjected to multiple tests, the advantages of the existing non-cured polyurethane waterproof coating and the non-cured rubber asphalt waterproof coating are combined, the using amounts of asphalt and rubber materials are greatly reduced, the using amount relation of polyurethane and polyether polyol is adjusted, borax is added, biomass charcoal and mica powder are specifically selected, and the components are cooperatively matched, so that the obtained polyurethane non-cured waterproof coating is excellent in performance, and more environment-friendly in production and application.
(2) The polyurethane non-cured waterproof coating provided by the invention can be directly coated, and can also be coated by heating to a temperature of more than 80 ℃ (liquid state), so that the coating temperature is reduced, the coating is safer and more convenient, and the application range is wider.
(3) The polyurethane non-curing waterproof coating provided by the invention has high bonding strength, excellent self-healing capability and waterproof effect, can well adapt to the deformation requirement of a coated part, and has good durability.
(4) The production process of the polyurethane non-cured waterproof coating provided by the invention is simple and convenient to operate, and the prepared polyurethane non-cured waterproof coating is stable in performance and reduces the pollution problem caused by asphalt.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
25 parts of isocyanate, 10 parts of polyether polyol, 6 parts of asphalt, 2 parts of rubber powder, 3 parts of biomass charcoal, 3 parts of mica powder, 2 parts of borax, 2 parts of surfactant, 2 parts of amine chain extender and 2 parts of flatting agent.
Group 1: the polyether polyol is obtained by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 3;
group 2: the polyether polyol is Y-1900;
group 3: the polyether polyol is PTMEG 200;
the particle sizes of the biomass charcoal and the mica powder are both 500 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 140-;
cooling to 100 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 1.5 hours at the temperature of 100 ℃;
reducing the temperature to 60 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 30min, and dehydrating.
In this example, the test group and the control group were different in that different polyether polyols were used.
The performance of the obtained polyurethane non-cured waterproof coating is detected, and the results are shown in table 1.
TABLE 1 Performance test results
As can be seen from Table 1, compared with the polyurethane non-cured waterproof coating prepared by mixing the polyether polyol Y-1900 and the PTMEG200 in a weight ratio of 1:3, the polyurethane non-cured waterproof coating prepared by mixing the polyether polyol Y-1900 and the PTMEG200 has obviously superior low-temperature flexibility, elongation and aging resistance.
Example 2
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
test groups: 25 parts of isocyanate, 10 parts of polyether polyol, 6 parts of asphalt, 2 parts of rubber powder, 3 parts of biomass charcoal, 3 parts of mica powder, 2 parts of borax, 2 parts of surfactant, 2 parts of amine chain extender and 2 parts of flatting agent;
control group 1: no borax is added, and the other components are the same as those in the test group;
control group 2: 3 parts of biomass carbon and 3 parts of mica powder are replaced by 6 parts of carbon black, and other components are the same as those in the test group;
wherein the polyether polyol is prepared by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 3;
the particle sizes of the biomass charcoal and the mica powder are both 500 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 140-;
cooling to 100 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 1.5 hours at the temperature of 100 ℃;
reducing the temperature to 60 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 30min, and dehydrating.
The performance of the obtained polyurethane non-cured waterproof coating is detected, and the results are shown in table 2.
TABLE 2 Performance test results
As can be seen from Table 2, the borax was not added, and the prepared coating did not meet the industrial standard; in addition, the replacement of the filler greatly reduces the performance of the coating.
Example 3
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
25 parts of isocyanate, 10 parts of polyether polyol, 6 parts of asphalt, 2 parts of rubber powder, 3 parts of biomass charcoal, 3 parts of mica powder, 2 parts of borax, 2 parts of surfactant, 2 parts of amine chain extender and 2 parts of flatting agent;
wherein the polyether polyol is prepared by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 3;
the particle sizes of the biomass charcoal and the mica powder are both 500 meshes.
Test groups: mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 140-;
cooling to 100 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 1.5 hours at the temperature of 100 ℃;
reducing the temperature to 60 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 30min, and dehydrating.
Control group 1: in contrast to the above, in the preparation step, the raw materials were directly mixed together and then heated to 150 ℃ for 30 hours.
Control group 2: different from the method, in the preparation step, the isocyanate and the polyether glycol are added with the amine chain extender to prepare a polymer, and then the borax is added to carry out mixing reaction.
The non-cured waterproof polyurethane coatings prepared by the control group 1 and the control group 2 are not uniform in colloid shape, are difficult to coat uniformly during application, and have weak deformation performance. The polyurethane non-cured waterproof coating prepared by the test group has high bonding strength, is easy to coat, can well meet the deformation requirement of a coated part, has good durability and is more environment-friendly.
Example 4
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
25 parts of isocyanate, 10 parts of polyether polyol, 6 parts of asphalt, 2 parts of rubber powder, 3 parts of biomass charcoal, 3 parts of mica powder, 2 parts of borax, 2 parts of surfactant, 2 parts of amine chain extender and 2 parts of flatting agent;
wherein the polyether polyol is prepared by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 3;
the particle sizes of the biomass charcoal and the mica powder are both 500 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 140-;
cooling to 100 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 1.5 hours at the temperature of 100 ℃;
reducing the temperature to 60 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 30min, and dehydrating.
Control group 1-1: different from the above, in the preparation step, the asphalt, the rubber material, the biomass charcoal and the mica powder are mixed and heated without heat preservation for 30min, and vacuum degassing is directly carried out;
control groups 1-2: different from the above, in the preparation step, the asphalt, the rubber material, the biomass charcoal and the mica powder are mixed and heated, and then the heat preservation is carried out for 30min without vacuum degassing.
Control group 2-1: different from the above, the temperature is reduced to 60 ℃, the flatting agent is directly added, and then dehydration is carried out;
control group 2-2: different from the above, the leveling agent is directly added without cooling, the temperature is kept for 30min, and then dehydration is carried out.
The performance of the obtained polyurethane non-cured waterproof coating is tested, and the results are shown in table 3.
TABLE 3 Performance test results
As can be seen from Table 3, the parameters of the preparation conditions all have a certain influence on the performance of the polyurethane non-cured waterproof coating.
Example 5
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
20 parts of isocyanate, 8 parts of polyether polyol, 5 parts of asphalt, 2 parts of rubber powder, 2 parts of biomass charcoal, 2 parts of mica powder, 1 part of borax, 1 part of surfactant, 1 part of amine chain extender and 0.5 part of flatting agent;
wherein the polyether polyol is obtained by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 2;
the particle sizes of the biomass charcoal and the mica powder are both 600 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 160 ℃ under the protection of inert gas, preserving heat for 20min, and vacuum degassing for 10 min;
cooling to 80 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 2 hours at the temperature of 95 ℃;
reducing the temperature to 55 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 60min, and dehydrating.
Example 6
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
30 parts of isocyanate, 15 parts of polyether polyol, 10 parts of asphalt, 5 parts of rubber material, 5 parts of biomass charcoal, 5 parts of mica powder, 3 parts of borax, 3 parts of surfactant, 3 parts of amine chain extender and 3 parts of flatting agent;
wherein the polyether polyol is obtained by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 5;
the particle sizes of the biomass charcoal and the mica powder are both 1000 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 140 ℃ under the protection of inert gas, preserving heat for 40min, and vacuum degassing for 30 min;
cooling to 120 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 1h at the temperature of 100 ℃;
reducing the temperature to 65 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 30min, and dehydrating.
Example 7
The production process of the polyurethane non-curing waterproof coating adopts the following steps:
the following raw materials are taken according to parts by weight:
25 parts of isocyanate, 12 parts of polyether polyol, 7 parts of asphalt, 3 parts of rubber material, 4 parts of biomass charcoal, 4 parts of mica powder, 3 parts of borax, 1 part of surfactant, 1 part of amine chain extender and 1 part of flatting agent;
wherein the polyether polyol is obtained by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 4;
the particle sizes of the biomass charcoal and the mica powder are both 600 meshes.
Mixing asphalt, rubber materials, biomass charcoal and mica powder, heating to 150 ℃ under the protection of inert gas, preserving heat for 30min, and vacuum degassing for 20 min;
cooling to 100 deg.C, adding surfactant, and mixing;
adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting for 2 hours at the temperature of 100 ℃;
reducing the temperature to 60 ℃, then adding the flatting agent, mixing uniformly, preserving the heat for 40min, and dehydrating.
The polyurethane non-cured waterproof coatings prepared in examples 5 to 7 were subjected to performance tests, and the polyurethane non-cured waterproof coating prepared in example 6, which discloses the non-cured polyurethane waterproof coating and the preparation method thereof in application No. 201410115980.X, was used as a control group, and the specific results are shown in table 4.
TABLE 4 Performance test results
As can be seen from Table 4, compared with the existing polyurethane non-cured waterproof coating, the polyurethane non-cured waterproof coating prepared by the invention has the advantages that the component difference is large, the performance difference is large, the extensibility of the polyurethane non-cured waterproof coating is obviously higher than that of a control group, and the production and application processes are more environment-friendly due to the great reduction of asphalt.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (8)
1. A polyurethane non-curing waterproof coating is characterized by being mainly prepared from the following raw materials, by weight, 20-30 parts of isocyanate, 8-15 parts of polyether polyol, 5-10 parts of asphalt, 2-5 parts of rubber materials, 2-5 parts of biomass carbon, 2-5 parts of mica powder, 1-3 parts of borax, 1-3 parts of a surfactant, 1-3 parts of an amine chain extender and 0.5-3 parts of a leveling agent;
the polyether polyol is obtained by mixing Y-1900 and PTMEG200 according to the weight ratio of 1: 2-5;
the production process of the polyurethane non-cured waterproof coating comprises the following steps:
(a) mixing the asphalt, the rubber material, the biomass charcoal and the mica powder, heating to 140-160 ℃ under the protection of inert gas, and preserving heat for 20-40 min;
(b) cooling to 80-120 deg.C, adding surfactant, and mixing;
(c) adding isocyanate, polyether polyol and borax, uniformly mixing, adding an amine chain extender, and reacting;
(d) and then adding the flatting agent and mixing uniformly to obtain the product.
2. The polyurethane non-cured waterproof coating material of claim 1, wherein the coating material comprises, by weight, 25-28 parts of isocyanate, 10-12 parts of polyether polyol, 6-7 parts of asphalt, 2-3 parts of rubber materials, 3-4 parts of biomass charcoal, 3-4 parts of mica powder, 2-3 parts of borax, 1-2 parts of a surfactant, 1-2 parts of an amine chain extender, and 1-2 parts of a leveling agent.
3. The polyurethane non-curable waterproof coating material according to claim 1 or 2, wherein the particle sizes of the biomass char and the mica powder are both in a micron order.
4. The polyurethane non-curable waterproof coating material according to claim 1 or 2, wherein the rubber material is rubber powder.
5. The non-curable polyurethane waterproof coating material according to claim 1, further comprising vacuum degassing for 10 to 30min after the step (a).
6. The polyurethane non-curable waterproof coating material according to claim 1, wherein in the step (c), the reaction is: keeping the temperature at 95-100 ℃ for 1-2 h.
7. The non-curable polyurethane waterproofing paint according to claim 1, wherein in the step (d), the temperature is lowered to 55 to 65 ℃, and then the leveling agent is added.
8. The non-curable polyurethane waterproof coating material according to claim 7, wherein in the step (d), the leveling agent is added, and then the mixture is subjected to heat preservation for 30-60min and then dehydrated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810084137.8A CN108276895B (en) | 2018-01-29 | 2018-01-29 | Polyurethane non-cured waterproof coating and production process thereof |
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| CN201810084137.8A CN108276895B (en) | 2018-01-29 | 2018-01-29 | Polyurethane non-cured waterproof coating and production process thereof |
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| CN111518476A (en) * | 2020-06-10 | 2020-08-11 | 河南彩虹建材科技有限公司 | Polyurethane modified asphalt-based non-cured waterproof coating and preparation method and application thereof |
| CN113717622A (en) * | 2021-10-13 | 2021-11-30 | 深圳市深赛尔股份有限公司 | Asparagus resin-containing water-based self-repairing industrial coating and preparation method thereof |
| CN115093793A (en) * | 2022-07-15 | 2022-09-23 | 四川凯伦新材料有限公司 | Environment-friendly smokeless instant sprayable non-curable asphalt waterproof coating |
| CN116218337A (en) * | 2023-03-20 | 2023-06-06 | 北新防水(咸阳)有限公司 | Production and application of non-cured rubber waterproof paint capable of preventing heating from overflowing barrel |
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| CN103937407B (en) * | 2013-01-22 | 2016-06-15 | 张秀君 | Uncured rubber asphalt waterproof coating |
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