CN110982408A - Polyurethane waterproof coating and preparation method thereof - Google Patents
Polyurethane waterproof coating and preparation method 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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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
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Abstract
The invention discloses a polyurethane waterproof coating which comprises the following raw materials in parts by weight: 40-45 parts of high-strength hydrophobic polyurethane, 3-8 parts of epoxy resin, 20-25 parts of short-oil alkyd resin, 12-15 parts of petroleum asphalt, 1-2 parts of carbon black, 2-3 parts of polyethylene oxide, 0.2-0.6 part of calcium lignosulfonate, 1-2 parts of high-activity fluorine titanium compound, 2-5 parts of nano-silica, 15-20 parts of hot melt adhesive, 3-5 parts of high-density polyethylene, 3-6 parts of nano-graphene, 4-8 parts of nano-tin antimony oxide, 2-3 parts of polypropylene fiber, 1-3 parts of nano-alumina, 2-3 parts of methyl parathion, 3-8 parts of bentonite, 3-6 parts of a mixture of polyvinyl chloride wax and castor oil, 2-5 parts of coupling agent, 1-3 parts of cyclohexanone, 5-15 parts of high-efficiency antibacterial component, 4-8 parts of mildew preventive, 0.1-0.4 part of defoaming agent and 1-2 parts, 1-3 parts of flame retardant. The invention has the advantages of high antibacterial property, strong adhesiveness and good waterproofness.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation method thereof.
Background
The polyurethane waterproof paint is one kind of single component waterproof polyurethane paint prepared with isocyanate group-containing prepolymer prepared through addition polymerization of isocyanate, polyether, etc. and through mixing with catalyst, anhydrous assistant, anhydrous stuffing, solvent, etc.
The existing polyurethane waterproof paint has the following main defects: (1) the existing polyurethane waterproof coating generally has the disadvantages of low temperature resistance, low strength and poor elasticity; (2) the waterproof performance is poor; (3) the flame retardant effect is poor; (4) the antibacterial property is poor; (5) the adhesive properties are poor.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a polyurethane waterproof coating which has the advantages of antibacterial effect, improved adhesion effect, good water resistance and high strength and can ensure adhesion endurance and a preparation method thereof.
In order to achieve the purpose, the polyurethane waterproof coating provided by the invention comprises the following raw materials in parts by weight: 40-45 parts of high-strength hydrophobic polyurethane, 3-8 parts of epoxy resin, 20-25 parts of short-oil alkyd resin, 12-15 parts of petroleum asphalt, 1-2 parts of carbon black, 2-3 parts of polyethylene oxide, 0.2-0.6 part of calcium lignosulfonate, 1-2 parts of high-activity fluorine titanium, 2-5 parts of nano silicon dioxide, 5-10 parts of hot melt adhesive, 3-5 parts of high-density polyethylene, 3-6 parts of nano graphene, 4-8 parts of nano tin antimony oxide, 2-3 parts of polypropylene fiber, 1-3 parts of nano aluminum oxide, 2-3 parts of methyl parathion, 3-8 parts of bentonite, 3-6 parts of a mixture of polyvinyl chloride wax and castor oil, 2-5 parts of a coupling agent, 1-3 parts of cyclohexanone, 5-15 parts of a high-efficiency antibacterial component, 4-8 parts of mildew preventive, 0.1-0.4 part of defoaming agent, 1-2 parts of ultraviolet absorber and 1-3 parts of flame retardant.
Furthermore, the high-efficiency antibacterial component consists of triclosan, nano antibacterial silver and tea polyphenol.
Furthermore, the content of the triclosan is 60-70% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 10-20% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 0-20% of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax is 85-90% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil is 10-15% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
Further, the polyurethane waterproof coating also comprises the following raw materials in parts by weight: 1-4 parts of a moisture-proof agent.
The invention also discloses a preparation method of the polyurethane waterproof coating, which comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at the temperature of 140-;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 80-120 ℃, and stirring for reacting for 1-3 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber and the flame retardant into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
Further, the required temperature in step S1 is 150 ℃.
Further, the required temperature in step S2 is 110 ℃.
The polyurethane waterproof coating and the preparation method thereof have the advantages of antibacterial effect, adhesion effect improvement, adhesion endurance guarantee, good waterproofness and high strength.
Detailed Description
The invention will now be described by way of preferred consideration with reference to the following examples.
Example 1:
the polyurethane waterproof coating provided by the embodiment comprises the following raw materials in parts by weight: 40-45 parts of high-strength hydrophobic polyurethane, 3-8 parts of epoxy resin, 20-25 parts of short-oil alkyd resin, 12-15 parts of petroleum asphalt, 1-2 parts of carbon black, 2-3 parts of polyethylene oxide, 0.2-0.6 part of calcium lignosulfonate, 1-2 parts of high-activity fluorine titanium, 2-5 parts of nano silicon dioxide, 5-10 parts of hot melt adhesive, 3-5 parts of high-density polyethylene, 3-6 parts of nano graphene, 4-8 parts of nano tin antimony oxide, 2-3 parts of polypropylene fiber, 1-3 parts of nano aluminum oxide, 2-3 parts of methyl parathion, 3-8 parts of bentonite, 3-6 parts of a mixture of polyvinyl chloride wax and castor oil, 2-5 parts of a coupling agent, 1-3 parts of cyclohexanone, 5-15 parts of a high-efficiency antibacterial component, 4-8 parts of mildew preventive, 0.1-0.4 part of defoaming agent, 1-2 parts of ultraviolet absorber and 1-3 parts of flame retardant.
The content in the embodiment is: 44 parts of high-strength hydrophobic polyurethane, 6 parts of epoxy resin, 22 parts of short-oil alkyd resin, 13 parts of petroleum asphalt, 1 part of carbon black, 2 parts of polyethylene oxide, 0.3 part of calcium lignosulfonate, 1-2 parts of high-activity fluorine titanium compound, 3 parts of nano-silica, 5 parts of hot melt adhesive, 4 parts of high-density polyethylene, 4 parts of nano-graphene, 5 parts of nano-tin antimony oxide, 3 parts of polypropylene fiber, 2 parts of nano-alumina, 2.5 parts of methyl parathion, 6 parts of bentonite, 4 parts of a mixture of polyvinyl chloride wax and castor oil, 3 parts of a coupling agent, 2 parts of cyclohexanone, 10 parts of a high-efficiency antibacterial component, 5 parts of a mildew preventive, 0.2 part of a defoaming agent, 1.5 parts of an ultraviolet light absorber and 2 parts of a flame retardant.
Furthermore, the high-efficiency antibacterial component consists of triclosan, nano antibacterial silver and tea polyphenol.
Furthermore, the content of the triclosan is 60-70% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 10-20% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 0-20% of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax is 85-90% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil is 10-15% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
The embodiment also discloses a preparation method of the polyurethane waterproof coating, which specifically comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at the temperature of 140-;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 80-120 ℃, and stirring for reacting for 1-3 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber and the flame retardant into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
Further, the required temperature in step S1 is 150 ℃.
Further, the required temperature in step S2 is 110 ℃.
Example 2:
the polyurethane waterproof coating provided by the embodiment comprises the following raw materials in parts by weight: 40 parts of high-strength hydrophobic polyurethane, 3 parts of epoxy resin, 20 parts of short-oil alkyd resin, 12 parts of petroleum asphalt, 1 part of carbon black, 2 parts of polyethylene oxide, 0.2 part of calcium lignosulfonate, 1 part of high-activity fluorine titanium compound, 2 parts of nano silicon dioxide, 5 parts of hot melt adhesive, 3 parts of high-density polyethylene, 3 parts of nano graphene, 4 parts of nano tin antimony oxide, 2 parts of polypropylene fiber, 1 part of nano aluminum oxide, 2-3 parts of methyl parathion, 3 parts of bentonite, 3 parts of a mixture of polyvinyl chloride wax and castor oil, 2 parts of a coupling agent, 1-3 parts of cyclohexanone, 5 parts of a high-efficiency antibacterial component, 4 parts of a mildew preventive, 0.1 part of a defoaming agent, 1-2 parts of an ultraviolet light absorber and 1 part of a flame retardant.
Furthermore, the high-efficiency antibacterial component is triclosan and nano antibacterial silver.
Further, the content of the triclosan is 60% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 20% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 20% of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax is 85% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil is 15% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
The embodiment also discloses a preparation method of the polyurethane waterproof coating, which specifically comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at 140 ℃, and stirring for reacting for 1 hour to obtain a mixture A;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 120 ℃, and stirring for reacting for 1 hour to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber and the flame retardant into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
Example 3:
the polyurethane waterproof coating provided by the embodiment comprises the following raw materials in parts by weight: 41 parts of high-strength hydrophobic polyurethane, 4 parts of epoxy resin, 21 parts of short-oil alkyd resin, 13 parts of petroleum asphalt, 1.5 parts of carbon black, 2.5 parts of polyethylene oxide, 0.3 part of calcium lignosulfonate, 1.5 parts of high-activity fluorine titanium compound, 3 parts of nano-silica, 6 parts of hot melt adhesive, 3.5 parts of high-density polyethylene, 4 parts of nano-graphene, 5 parts of nano-tin antimony oxide, 2.5 parts of polypropylene fiber, 2 parts of nano-alumina, 2.5 parts of methyl parathion, 4 parts of bentonite, 4 parts of a mixture of polyvinyl chloride wax and castor oil, 3 parts of coupling agent, 2 parts of cyclohexanone, 6 parts of high-efficiency antibacterial component, 5 parts of mildew preventive, 0.2 part of defoaming agent, 4.5 parts of ultraviolet absorber and 2 parts of flame retardant.
Further, the high-efficiency antibacterial components are triclosan, nano antibacterial silver and tea polyphenol.
Further, the content of the triclosan is 70% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 10% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 20% of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax is 90% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil is 10% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
Further, the polyurethane waterproof coating also comprises the following raw materials in parts by weight: 1-4 parts of a moisture-proof agent. In this example, 2 parts of the moisture-proofing agent is described.
The embodiment also discloses a preparation method of the polyurethane waterproof coating, which specifically comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at 160 ℃, and stirring for reacting for 0.5h to obtain a mixture A;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 80 ℃, and stirring for reacting for 3 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber, the flame retardant and the moisture preventive into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
Example 4:
the polyurethane waterproof coating provided by the embodiment comprises the following raw materials in parts by weight: 42 parts of high-strength hydrophobic polyurethane, 5 parts of epoxy resin, 22 parts of short-oil alkyd resin, 13 parts of petroleum asphalt, 1.8 parts of carbon black, 2.5 parts of polyethylene oxide, 0.5 part of calcium lignosulfonate, 1.5 parts of high-activity fluorine titanium, 4 parts of nano silicon dioxide, 7 parts of hot melt adhesive, 4 parts of high-density polyethylene, 5 parts of nano graphene, 7 parts of nano tin antimony oxide, 2.8 parts of polypropylene fiber, 2 parts of nano aluminum oxide, 2.5 parts of methyl parathion, 7 parts of bentonite, 5 parts of a mixture of polyvinyl chloride wax and castor oil, 4 parts of a coupling agent, 2 parts of cyclohexanone, 14 parts of a high-efficiency antibacterial component, 7 parts of a mildew preventive, 0.3 part of a defoaming agent, 2 parts of an ultraviolet light absorbent and 2 parts of a flame retardant.
Furthermore, the high-efficiency antibacterial component consists of triclosan, nano antibacterial silver and tea polyphenol.
Further, the content of the triclosan is 65% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 18% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 17% of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax was 86% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil was 14% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
Further, the polyurethane waterproof coating also comprises the following raw materials in parts by weight: and 3 parts of a moisture-proof agent.
The embodiment also discloses a preparation method of the polyurethane waterproof coating, which specifically comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at 150 ℃, and stirring for reacting for 0.8h to obtain a mixture A;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 100 ℃, and stirring for reacting for 2 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber, the flame retardant and the moisture preventive into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
Example 5:
the polyurethane waterproof coating provided by the embodiment comprises the following raw materials in parts by weight: 45 parts of high-strength hydrophobic polyurethane, 8 parts of epoxy resin, 25 parts of short-oil alkyd resin, 15 parts of petroleum asphalt, 2 parts of carbon black, 3 parts of polyethylene oxide, 0.6 part of calcium lignosulfonate, 2 parts of high-activity fluorine titanium compound, 5 parts of nano silicon dioxide, 10 parts of hot melt adhesive, 5 parts of high-density polyethylene, 6 parts of nano graphene, 8 parts of nano tin antimony oxide, 3 parts of polypropylene fiber, 3 parts of nano aluminum oxide, 3 parts of methyl parathion, 8 parts of bentonite, 6 parts of a mixture of polyvinyl chloride wax and castor oil, 5 parts of a coupling agent, 1-3 parts of cyclohexanone, 15 parts of a high-efficiency antibacterial component, 8 parts of a mildew preventive, 0.4 part of a defoaming agent, 2 parts of an ultraviolet light absorber and 3 parts of a flame retardant.
Furthermore, the high-efficiency antibacterial component consists of triclosan, nano antibacterial silver and tea polyphenol.
Furthermore, the content of the triclosan is 68 percent of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 18 percent of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 14 percent of the total content of the high-efficiency antibacterial component.
Further, the petroleum asphalt is formed by mixing attapulgite modified asphalt and petroleum.
Further, the polyvinyl chloride wax was 87% of the total content of the mixture of the polyvinyl chloride wax and the castor oil, and the castor oil was 13% of the total content of the mixture of the polyvinyl chloride wax and the castor oil.
The invention also discloses a preparation method of the polyurethane waterproof coating, which comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at 155 ℃, and stirring for reacting for 0.8h to obtain a mixture A;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 110 ℃, and stirring for reacting for 1.5 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber and the flame retardant into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
And (3) analyzing experimental data: evaluation of efficacy
1. The antibacterial property, the adhesive strength and the endurance are tested clinically, and the antibacterial property, the adhesive strength and the endurance of the preparation examples 1-5 and the common product are tested respectively, wherein the antibacterial property is tested by an instrument to obtain an antibacterial effect ratio, the adhesiveness is tested by an instrument to obtain an adhesive strength value, the stronger the strength is, the better the adhesiveness is, and the endurance is observed by practice. The evaluation results are shown in Table 1:
| evaluation index | Antibacterial property | Adhesion Property | Adhesive holding power |
| Example 1 | 80％ | 8 | Half a month |
| Example 2 | 82％ | 7 | 20 days |
| Example 3 | 86％ | 8 | 30 days |
| Example 4 | 90％ | 8 | 32 days |
| Example 5 | 95％ | 9 | 55 days |
| General products | 30％ | 2 | 10 days |
The above laboratory data show that: the products of the embodiments 1-5 are tested to find that the antibacterial property is good, after the products are used, the bacteria can be effectively inhibited, the antibacterial effect is finally improved, meanwhile, the adhesiveness is strong, and the lasting force of the adhesion is better than that of the existing products.
2. Water repellency, Strength clinical tests were conducted, and preparation examples 1 to 5 and general products were subjected to water repellency, strength test, water repellency and strength test, respectively, to use, using methods: stirring for 5 minutes, directly coating the mixture on the surface of concrete, and performing next construction after the surface is dried; then, the waterproof paint is tested, and the performance index results are shown in the table 2 after detection:
the above laboratory data show that: the products of examples 1-5 were tested to show a longer total burn time than the prior art, indicating good flame retardancy, and also better water resistance and pull-up performance than the prior art.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The polyurethane waterproof coating is characterized by comprising the following raw materials in parts by weight: 40-45 parts of high-strength hydrophobic polyurethane, 3-8 parts of epoxy resin, 20-25 parts of short-oil alkyd resin, 12-15 parts of petroleum asphalt, 1-2 parts of carbon black, 2-3 parts of polyethylene oxide, 0.2-0.6 part of calcium lignosulfonate, 1-2 parts of high-activity fluorine titanium, 2-5 parts of nano silicon dioxide, 5-10 parts of hot melt adhesive, 3-5 parts of high-density polyethylene, 3-6 parts of nano graphene, 4-8 parts of nano tin antimony oxide, 2-3 parts of polypropylene fiber, 1-3 parts of nano aluminum oxide, 2-3 parts of methyl parathion, 3-8 parts of bentonite, 3-6 parts of a mixture of polyvinyl chloride wax and castor oil, 2-5 parts of a coupling agent, 1-3 parts of cyclohexanone, 5-15 parts of a high-efficiency antibacterial component, 4-8 parts of mildew preventive, 0.1-0.4 part of defoaming agent, 1-2 parts of ultraviolet absorber and 1-3 parts of flame retardant.
2. The polyurethane waterproof coating material according to claim 1, characterized in that: the high-efficiency antibacterial component consists of triclosan, nano antibacterial silver and tea polyphenol.
3. The polyurethane waterproof coating material according to claim 2, characterized in that: the content of the triclosan is 60-70% of the total content of the high-efficiency antibacterial component, the content of the nano antibacterial silver is 10-20% of the total content of the high-efficiency antibacterial component, and the content of the tea polyphenol is 0-20% of the total content of the high-efficiency antibacterial component.
4. The polyurethane waterproofing coating according to claim 1, 2 or 3, characterized in that: the petroleum asphalt is prepared by mixing attapulgite modified asphalt and petroleum.
5. The polyurethane waterproofing coating according to claim 1, 2 or 3, characterized in that: the polyvinyl chloride wax is 85-90% of the total content of the mixture of polyvinyl chloride wax and castor oil, and the castor oil is 10-15% of the total content of the mixture of polyvinyl chloride wax and castor oil.
6. The polyurethane waterproofing coating according to claim 1, 2 or 3, characterized in that: the polyurethane waterproof coating also comprises the following raw materials in parts by weight: 1-4 parts of a moisture-proof agent.
7. A preparation method of a polyurethane waterproof coating is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, weighing the raw materials according to the specified parts, then placing the high-strength hydrophobic polyurethane, the epoxy resin, the short-oil alkyd resin and the petroleum asphalt in a closed container, starting a stirring device, vacuumizing at the temperature of 140-;
s2, adding carbon black, polyethylene oxide, calcium lignosulfonate, high-activity fluorine titanium compounds, nano silicon dioxide, hot melt adhesive, high-density polyethylene, nano graphene, nano tin antimony oxide, polypropylene fibers, nano aluminum oxide, methyl parathion, a coupling agent and cyclohexanone into the container containing the mixture A in the step S1, vacuumizing at 80-120 ℃, and stirring for reacting for 1-3 hours to obtain a mixture B;
s3, adding the mixture of bentonite, polyvinyl chloride wax and castor oil, the high-efficiency antibacterial component, the mildew preventive, the defoaming agent, the ultraviolet light absorber and the flame retardant into the container containing the mixture B in the step S2, and then stirring and mixing uniformly to obtain the polyurethane waterproof coating.
8. The preparation method of the polyurethane waterproof coating according to claim 7, characterized in that: the required temperature in step S1 is 150 ℃.
9. The preparation method of the polyurethane waterproof coating according to claim 7, characterized in that: the required temperature in step S2 is 110 ℃.
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