CN112409926A - Silicon modified asphalt rubber waterproof coating and preparation method and application thereof - Google Patents
Silicon modified asphalt rubber waterproof coating and preparation method and application 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
- C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
- C09D195/005—Aqueous compositions, e.g. emulsions
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- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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- 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
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- 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
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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
- 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
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention is suitable for the field of waterproof materials, and provides a silicon modified asphalt rubber waterproof coating as well as a preparation method and an application thereof, wherein the silicon modified asphalt rubber waterproof coating comprises the following components: silicone-acrylate emulsion, emulsified asphalt, SBR (styrene butadiene rubber), neoprene emulsion, silane coupling agent, penetrating agent, preservative, thickening agent, silicon micropowder and heavy calcium powder. The silicon modified asphalt rubber waterproof coating provided by the invention is greatly improved in weather resistance, heat resistance, water resistance, cohesiveness and the like, is greatly improved in elasticity and extensibility, and has the characteristics of high breaking strength and elongation at break, balance, excellent water resistance and storability, good construction performance, long service life and the like.
Description
Technical Field
The invention belongs to the field of waterproof materials, and particularly relates to a silicon modified asphalt rubber waterproof coating as well as a preparation method and application thereof.
Background
The traditional modified asphalt is oily and water-emulsion, and is not popular in the market due to the oily property, volatile harmful substances, no environmental protection, flammability and dangerous article range. The earliest initial water-based emulsified asphalt waterproof coating has certain waterproofness and corrosion resistance, short service life, poor low-temperature flexibility, poor heat resistance and other performances, is suitable for industrial and civil building roofs of waterproof grades III and IV, and is modified by emulsified asphalt in order to meet the requirements of various base surfaces.
Currently, the technologies for modifying emulsified asphalt include polymer-modified asphalt and rubber-modified asphalt, which have been improved greatly in terms of adhesion to the base surface, chemical resistance, heat resistance, low-temperature flexibility, elasticity, elongation, etc., but have some disadvantages with respect to the balance of physical properties such as breaking strength, tear strength, low-temperature bending property, low-temperature flexibility, weather resistance, water resistance, etc.
Disclosure of Invention
The embodiment of the invention aims to provide a silicon modified asphalt rubber waterproof coating, aiming at solving the problems in the background art.
The embodiment of the invention is realized in such a way that the silicon modified asphalt rubber waterproof coating comprises the following components in parts by weight:
15-30 parts of silicone-acrylate emulsion;
30-50 parts of emulsified asphalt;
1-8 parts of SBR (styrene butadiene rubber);
15-30 parts of a chloroprene emulsion;
0.01-0.3 part of silane coupling agent;
0.05-0.5 part of penetrating agent;
0.01-0.3 part of preservative;
0.05-0.5 part of thickening agent;
1-8 parts of silicon micropowder;
5-20 parts of heavy calcium powder.
As a preferable scheme of the embodiment of the invention, the silicon modified asphalt rubber waterproof coating comprises the following components in parts by weight:
18-25 parts of silicone-acrylate emulsion;
35-45 parts of emulsified asphalt;
3-6 parts of SBR (styrene butadiene rubber);
19-25 parts of a chloroprene emulsion;
0.05-0.2 part of silane coupling agent;
0.1-0.3 part of penetrating agent;
0.05-0.2 part of preservative;
0.1-0.3 part of thickening agent;
4-6 parts of silicon micropowder;
10-15 parts of heavy calcium powder.
As another preferable mode of the embodiment of the present invention, the osmotic agent is a water-soluble liquid containing a sodium silicate component.
As another preferable aspect of the embodiment of the present invention, the thickener is a polyurethane associative thickener.
As another preferred embodiment of the present invention, the preservative is an aqueous solution of potassium sorbate and/or sodium benzoate.
As another preferable scheme of the embodiment of the invention, the solid content of the silicone-acrylic emulsion is not less than 55%, and the solid content of the emulsified asphalt is not less than 50%.
Another object of the embodiment of the present invention is to provide a preparation method of the above silicon modified asphalt rubber waterproof coating, which comprises the following steps:
weighing silicone-acrylic emulsion, emulsified asphalt, SBR (styrene butadiene rubber), chloroprene emulsion, silane coupling agent, penetrating agent, preservative, thickening agent, silicon micropowder and heavy calcium powder according to the weight parts of the components;
mixing the silicone-acrylate emulsion, the silicon micropowder and the heavy calcium powder at the temperature of 50-70 ℃ to obtain a mixture A;
mixing the mixture A and the chloroprene emulsion at the temperature of 50-70 ℃ to obtain a mixture B;
mixing the mixture B, a silane coupling agent and a penetrating agent at the temperature of 50-70 ℃ to obtain a mixture C;
mixing the mixture C and emulsified asphalt at the temperature of 50-70 ℃ to obtain a mixture D;
and mixing the mixture D and the preservative at the temperature of 50-70 ℃, and then mixing with the thickening agent to obtain the silicon modified asphalt rubber waterproof coating.
The other purpose of the embodiment of the invention is to provide the silicon modified asphalt rubber waterproof coating prepared by the preparation method.
In another preferable scheme of the embodiment of the invention, the silicon modified asphalt rubber waterproof coating has the breaking strength of 0.9-1.2 MPa, the elongation at break of 850-1300%, the shear strength at 50 ℃ of 0.18-0.3 MPa, and the bonding strength with cement concrete of 0.6-0.9 MPa.
The other purpose of the embodiment of the invention is to provide an application of the silicon modified asphalt rubber waterproof coating in serving as a waterproof material.
In the invention, the silicone-acrylic emulsion is prepared by adding an organic silicon monomer containing unsaturated bonds and an acrylic monomer into a proper auxiliary agent and carrying out core-shell coating polymerization, wherein the molecular structure of the silane coupling agent is as follows: gamma-R-Si (OR)3The (in the formula, the gamma-organic functional group, SiOR-siloxy) siloxy has reactivity with inorganic substances, and the organic functional group has reactivity or compatibility with organic substances, so that the combination of an organic-silane coupling agent and an inorganic matrix can be formed. The whole system in the formula forms a multi-crosslinking complex, so that various physical properties of the coating are more balanced, and the index is better.
The silicon modified asphalt rubber waterproof coating provided by the embodiment of the invention is greatly improved in weather resistance, heat resistance, water resistance, cohesiveness and the like, is greatly improved in elasticity and extensibility, and has the characteristics of high breaking strength and elongation at break, balance, excellent water resistance and storability, good construction performance, long service life and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 15kg of silicone-acrylic emulsion, 50kg of emulsified asphalt, 1kg of SBR (styrene butadiene rubber), 15kg of chloroprene emulsion, 0.01kg of silane coupling agent, 0.05kg of penetrating agent, 0.01kg of preservative, 0.05kg of thickening agent, 1kg of silicon micropowder and 5kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate and sodium benzoate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 50 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 50 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 50 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 50 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 50 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 2
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 30kg of silicone-acrylic emulsion, 30kg of emulsified asphalt, 8kg of SBR (styrene butadiene rubber), 30kg of chloroprene emulsion, 0.3kg of silane coupling agent, 0.5kg of penetrating agent, 0.3kg of preservative, 0.5kg of thickening agent, 8kg of silicon micropowder and 20kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is black brown water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of sodium benzoate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 70 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 70 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 70 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 70 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 70 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 3
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 22kg of silicone-acrylic emulsion, 40kg of emulsified asphalt, 4kg of SBR (styrene butadiene rubber), 22kg of chloroprene emulsion, 0.05kg of silane coupling agent, 0.1kg of penetrating agent, 0.05kg of preservative, 0.1kg of thickening agent, 4kg of silicon micropowder and 10kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 55 ℃, keeping the temperature, stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 55 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 55 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 55 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 55 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 4
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 23kg of silicone-acrylic emulsion, 40kg of emulsified asphalt, 5kg of SBR (styrene butadiene rubber), 23kg of chloroprene emulsion, 0.2kg of silane coupling agent, 0.3kg of penetrating agent, 0.2kg of preservative, 0.3kg of thickening agent, 6kg of silicon micropowder and 15kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 65 ℃, keeping the temperature, stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 65 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 65 ℃ to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, keeping the temperature at 65 ℃, stirring and mixing for 30min to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 65 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 5
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 22kg of silicone-acrylic emulsion, 40kg of emulsified asphalt, 3kg of SBR (styrene butadiene rubber), 25kg of chloroprene emulsion, 0.1kg of silane coupling agent, 0.2kg of penetrating agent, 0.1kg of preservative, 0.2kg of thickening agent, 5kg of silicon micropowder and 12kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 60 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 60 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 60 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 6
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 25kg of silicone-acrylic emulsion, 38kg of emulsified asphalt, 5kg of SBR (styrene butadiene rubber), 20kg of chloroprene emulsion, 0.1kg of silane coupling agent, 0.2kg of penetrating agent, 0.1kg of preservative, 0.2kg of thickening agent, 5kg of silicon micropowder and 12kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 60 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 60 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 60 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 7
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 18kg of silicone-acrylic emulsion, 45kg of emulsified asphalt, 4kg of SBR (styrene butadiene rubber), 19kg of chloroprene emulsion, 0.1kg of silane coupling agent, 0.2kg of penetrating agent, 0.1kg of preservative, 0.2kg of thickening agent, 5kg of silicon micropowder and 12kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 60 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 60 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 60 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Example 8
The embodiment provides a silicon modified asphalt rubber waterproof coating, and the preparation method comprises the following steps:
s1, weighing 20kg of silicone-acrylic emulsion, 35kg of emulsified asphalt, 6kg of SBR (styrene butadiene rubber), 22kg of chloroprene emulsion, 0.1kg of silane coupling agent, 0.2kg of penetrating agent, 0.1kg of preservative, 0.2kg of thickening agent, 5kg of silicon micropowder and 12kg of heavy calcium powder for later use; wherein, each component is a commercial product, in particular, the silicone-acrylate emulsion is a silicon-containing milky water-based acrylic emulsion, and the solid content is more than or equal to 55 percent; the emulsified asphalt is brown-black water emulsion asphalt at normal temperature, and the solid content is more than or equal to 50 percent; the SBR is an emulsified dispersed water body of the SBR; the neoprene latex is a neoprene latex emulsified and dispersed aqueous body; the silane coupling agent is a common organosilane; the penetrating agent is a water-soluble liquid containing sodium silicate; the thickener is a polyurethane associative low-shear thickener; the preservative is an aqueous solution of potassium sorbate; the silicon micropowder is white powder containing more than 80 percent of silicon dioxide; the heavy calcium powder is a white powder containing more than 80% of calcium carbonate.
S2, adding the weighed silicone-acrylate emulsion into a dispersion reaction kettle, starting stirring, simultaneously adding the silicon micro powder and the heavy calcium powder, heating to 60 ℃, and carrying out heat preservation stirring and mixing for 1h to obtain a mixture A.
S3, adding the neoprene emulsion into the mixture A, keeping the temperature at 60 ℃, stirring and mixing for 20min to obtain a mixture B.
S4, adding a silane coupling agent and a penetrating agent into the mixture B, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture C.
S5, adding emulsified asphalt into the mixture C, and stirring and mixing for 30min at the temperature of 60 ℃ while keeping the temperature to obtain a mixture D.
S6, adding a preservative into the mixture D, keeping the temperature at 60 ℃, stirring and mixing for 20min, then adding a thickening agent, stirring and mixing for 1h, and naturally cooling to 30 ℃ while stirring to obtain the silicon modified asphalt rubber waterproof coating.
Experimental example:
the silicon modified asphalt rubber waterproof coatings prepared in the above examples 5 to 8 were respectively prepared into modules for various performance tests, and the test results are shown in table 1.
TABLE 1
| Detecting items | Example 5 | Example 6 | Example 7 | Example 8 |
| Breaking strength, MPa | 1.2 | 1.1 | 0.9 | 1.0 |
| Elongation at break,% | 1300 | 1202 | 850 | 950 |
| Bonding strength between coating and cement concrete, MPa | 0.9 | 0.75 | 0.6 | 0.65 |
| Shear strength at 50 ℃ in MPa | 0.3 | 0.25 | 0.18 | 0.21 |
| Water impermeability, 0.3MPa, 30min | Is impervious to water | Is impervious to water | Is impervious to water | Is impervious to water |
In conclusion, the silicon modified asphalt rubber waterproof coating prepared by the embodiment of the invention has the characteristics of excellent cohesiveness, high breaking strength, high elongation at break, balance, high shear strength and the like while ensuring excellent waterproof performance.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The silicon modified asphalt rubber waterproof coating is characterized by comprising the following components in parts by weight:
15-30 parts of silicone-acrylate emulsion;
30-50 parts of emulsified asphalt;
1-8 parts of SBR (styrene butadiene rubber);
15-30 parts of a chloroprene emulsion;
0.01-0.3 part of silane coupling agent;
0.05-0.5 part of penetrating agent;
0.01-0.3 part of preservative;
0.05-0.5 part of thickening agent;
1-8 parts of silicon micropowder;
5-20 parts of heavy calcium powder.
2. The silicon modified asphalt rubber waterproof coating as claimed in claim 1, wherein the silicon modified asphalt rubber waterproof coating comprises the following components in parts by weight:
18-25 parts of silicone-acrylate emulsion;
35-45 parts of emulsified asphalt;
3-6 parts of SBR (styrene butadiene rubber);
19-25 parts of a chloroprene emulsion;
0.05-0.2 part of silane coupling agent;
0.1-0.3 part of penetrating agent;
0.05-0.2 part of preservative;
0.1-0.3 part of thickening agent;
4-6 parts of silicon micropowder;
10-15 parts of heavy calcium powder.
3. The silicon modified asphalt rubber waterproof coating material as claimed in claim 1 or 2, wherein the penetrating agent is a water-soluble liquid containing a sodium silicate component.
4. The silicon-modified asphalt rubber waterproof coating material as claimed in claim 1 or 2, wherein the thickener is a polyurethane associated thickener.
5. The silicone modified asphalt rubber waterproof coating material as claimed in claim 1 or 2, wherein the preservative is an aqueous solution of potassium sorbate and/or sodium benzoate.
6. The silicon modified asphalt rubber waterproof coating material as claimed in claim 1 or 2, wherein the solid content of the silicone acrylic emulsion is not less than 55%, and the solid content of the emulsified asphalt is not less than 50%.
7. A preparation method of the silicon modified asphalt rubber waterproof coating as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
weighing silicone-acrylic emulsion, emulsified asphalt, SBR (styrene butadiene rubber), chloroprene emulsion, silane coupling agent, penetrating agent, preservative, thickening agent, silicon micropowder and heavy calcium powder according to the weight parts of the components;
mixing the silicone-acrylate emulsion, the silicon micropowder and the heavy calcium powder at the temperature of 50-70 ℃ to obtain a mixture A;
mixing the mixture A and the chloroprene emulsion at the temperature of 50-70 ℃ to obtain a mixture B;
mixing the mixture B, a silane coupling agent and a penetrating agent at the temperature of 50-70 ℃ to obtain a mixture C;
mixing the mixture C and emulsified asphalt at the temperature of 50-70 ℃ to obtain a mixture D;
and mixing the mixture D and the preservative at the temperature of 50-70 ℃, and then mixing with the thickening agent to obtain the silicon modified asphalt rubber waterproof coating.
8. A silicon-modified asphalt rubber waterproof coating prepared by the preparation method of claim 7.
9. The silicon-modified asphalt rubber waterproof coating as claimed in claim 8, wherein the silicon-modified asphalt rubber waterproof coating has a breaking strength of 0.9 to 1.2MPa, an elongation at break of 850 to 1300%, a shear strength at 50 ℃ of 0.18 to 0.3MPa, and a bonding strength with cement concrete of 0.6 to 0.9 MPa.
10. Use of the silicon-modified asphalt rubber waterproof coating material according to any one of claims 1 to 2 and 8 to 9 as a waterproof material.
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| CN114763444A (en) * | 2021-05-25 | 2022-07-19 | 广州莱特建材有限公司 | Water-based high-elasticity organic rubber waterproof paste and preparation method thereof |
| CN114958097A (en) * | 2022-07-18 | 2022-08-30 | 吉士达建设集团有限公司 | High-molecular permeable waterproof coating |
| CN115260908A (en) * | 2022-07-28 | 2022-11-01 | 苏州卓宝科技有限公司 | Low-density non-cured coating and preparation method thereof |
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