CN113402984A - Spraying quick-setting rubber asphalt waterproof coating and preparation method thereof - Google Patents
Spraying quick-setting rubber asphalt waterproof coating and preparation method thereof Download PDFInfo
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- CN113402984A CN113402984A CN202110770807.3A CN202110770807A CN113402984A CN 113402984 A CN113402984 A CN 113402984A CN 202110770807 A CN202110770807 A CN 202110770807A CN 113402984 A CN113402984 A CN 113402984A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 150
- 229920001971 elastomer Polymers 0.000 title claims abstract description 53
- 239000005060 rubber Substances 0.000 title claims abstract description 53
- 238000005507 spraying Methods 0.000 title claims abstract description 36
- 238000000576 coating method Methods 0.000 title claims abstract description 29
- 239000011248 coating agent Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 125000000129 anionic group Chemical group 0.000 claims abstract description 43
- 239000004816 latex Substances 0.000 claims abstract description 35
- 229920000126 latex Polymers 0.000 claims abstract description 35
- 239000000839 emulsion Substances 0.000 claims abstract description 33
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 30
- 239000012874 anionic emulsifier Substances 0.000 claims abstract description 23
- 239000000654 additive Substances 0.000 claims abstract description 19
- 230000000996 additive effect Effects 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 22
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 14
- 239000001110 calcium chloride Substances 0.000 claims description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000002174 Styrene-butadiene Substances 0.000 claims description 6
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000011115 styrene butadiene Substances 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 5
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 5
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 5
- -1 alkylbenzene sulfonate Chemical class 0.000 claims description 4
- GTVWRXDRKAHEAD-UHFFFAOYSA-N Tris(2-ethylhexyl) phosphate Chemical compound CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC GTVWRXDRKAHEAD-UHFFFAOYSA-N 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- VORRFUUQXVSQOQ-UHFFFAOYSA-N naphthalen-1-ylsulfonyloxymethyl naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(OCOS(=O)(=O)C=3C4=CC=CC=C4C=CC=3)=O)=CC=CC2=C1 VORRFUUQXVSQOQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 150000008052 alkyl sulfonates Chemical class 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000003973 paint Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000004996 alkyl benzenes Chemical group 0.000 description 1
- 125000005227 alkyl sulfonate group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a spraying quick-setting rubber asphalt waterproof coating and a preparation method thereof, which relate to the technical field of waterproof coatings and comprise a component A and a component B, wherein the component A is a rubber asphalt emulsion composed of anionic emulsified asphalt, water-based latex and an additive, and the anionic emulsified asphalt is composed of the following components in percentage by mass: 20-90 parts of asphalt, 20-60 parts of clear water, 0.15-2 parts of anionic emulsifier, 0.1-1 part of pH regulator and 0.1-1 part of stabilizer, wherein the asphalt is refined 90# asphalt; the preparation method has the advantages of being fast in demulsification time, good in temperature stability, good in compatibility, strong in viscosity and excellent in ageing resistance by using the masticated 90# asphalt as a main asphalt raw material, and the temperature stability, the mechanical stability, the compatibility and the demulsification performance of the emulsified asphalt can be improved by adjusting the masticated 90# asphalt by using sodium hydroxide as a pH regulator.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to a spraying quick-setting rubber asphalt waterproof coating and a preparation method thereof.
Background
The spraying quick-setting rubber asphalt waterproof coating is produced by adopting Clarithrome asphalt and high-quality rubber materials as base materials and a suspended asphalt emulsifier as a modifier through processes of catalysis, emulsification and the like; the waterproof performance is that a plurality of high molecular polymer materials form a wrapping film on the surface of an asphalt molecule, the molecules wrapped by the high molecular polymers form a continuous network and are closely connected with each other, and after the coating is dried to form a film, the high elasticity, low-temperature flexibility and aging resistance of the rubber material are maintained, and the waterproof coating has the advantages of strong puncture resistance, no water channeling, high temperature resistance, freezing resistance, chemical corrosion resistance, crack resistance, no toxicity, no peculiar smell, no environmental pollution and the like;
the emulsified asphalt has the characteristics of good storage stability, wide temperature application range, good compatibility with polymer emulsion and the like, and is a raw material very needed in the coating industry; at present, emulsified asphalt used for spraying rubber asphalt waterproof paint has the problems of unstable storage and easy layering, and also has the problem of poor low-temperature resistance, the emulsion breaking generally occurs at the temperature of less than 0 ℃, the asphalt is separated out and coagulated into blocks, so that the compatibility of the asphalt emulsion and polymer emulsion is poor, a dispersing agent is added to mix the asphalt emulsion and the rubber emulsion, the emulsion breaking time of the asphalt emulsion and the rubber emulsion cannot meet the standard requirement of spraying rubber asphalt waterproof paint, and the emulsion breaking can not be instantly realized when a coagulating agent is used; therefore, the invention provides a spraying quick-setting rubber asphalt waterproof coating and a preparation method thereof, which aim to overcome the defects in the prior art.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a spraying quick-setting rubber asphalt waterproof coating and a preparation method thereof, the anion emulsified asphalt is prepared by taking the masticated 90# asphalt as a main asphalt raw material, the anionic emulsified asphalt has the advantages of quick demulsification time, good temperature stability, good compatibility, strong viscosity and excellent ageing resistance, and the temperature stability, the mechanical stability, the compatibility and the demulsification performance of the emulsified asphalt can be improved by adjusting the masticated 90# asphalt by using sodium hydroxide as a pH regulator.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme:
a spraying quick-setting rubber asphalt waterproof coating comprises a component A and a component B, wherein the component A is rubber asphalt emulsion consisting of anionic emulsified asphalt, water-based latex and an additive, the component B is a liquid curing agent consisting of calcium chloride and water, and the mass ratio of the rubber asphalt emulsion to the liquid curing agent is 10:1 during spraying;
the anionic emulsified asphalt comprises the following components in percentage by mass: 20-90 parts of asphalt, 20-60 parts of clear water, 0.15-2 parts of anionic emulsifier, 0.1-1 part of pH regulator and 0.1-1 part of stabilizer, wherein the asphalt is the Classification 90# asphalt.
The further improvement lies in that: the component A comprises 10-90 parts by mass of anionic emulsified asphalt, 1-50 parts by mass of water-based latex and 0.1-2 parts by mass of an additive.
The further improvement lies in that: the additive is sodium hydroxymethyl cellulose.
The further improvement lies in that: the water-based latex is anionic styrene-butadiene latex or anionic chloroprene latex, and the solid content of the water-based latex is 40-60%.
The further improvement lies in that: the pH regulator is sodium hydroxide.
The further improvement lies in that: the stabilizer is any one of triethyl hexyl phosphate, methylene dinaphthalene sulfonate and cellulose sodium sulfonate.
The further improvement lies in that: the anionic emulsifier is any one of alkyl sulfonate, alkylbenzene sulfonate, alkyl naphthalene sulfonate and succinate sulfonate.
The further improvement lies in that: the mass percentage concentration of the liquid curing agent is 5-40%.
A preparation method of a spray-coating quick-setting rubber asphalt waterproof coating comprises the following steps:
the method comprises the following steps: preparation of anionic emulsified asphalt
Firstly, adding a pH regulator into clear water to regulate the pH value of the clear water to 9-13;
adding an anionic emulsifier into clear water, heating to 50-55 ℃, and then stirring at a high speed to obtain an anionic emulsifier aqueous solution;
adding the anionic emulsifier aqueous solution into emulsified asphalt equipment for circular grinding;
heating the asphalt to 140 ℃ to obtain molten asphalt;
adding the molten asphalt into emulsified asphalt equipment, and carrying out high-speed shearing stirring on the molten asphalt and the anionic emulsifier aqueous solution together to obtain anionic emulsified asphalt;
step two: preparation of rubber asphalt emulsion of component A
At normal temperature, adding the water-based latex and the additive into stirring equipment, and uniformly stirring and premixing to obtain a premix;
slowly adding the anionic emulsified asphalt prepared in the step one into stirring equipment, and stirring the anionic emulsified asphalt and the premix together to obtain a rubber asphalt emulsion of the component A;
step three: preparation of liquid curing agent of component B
At normal temperature, grinding calcium chloride into 120-mesh calcium chloride powder of 100 meshes, and then mixing and stirring the calcium chloride powder and water to obtain the liquid curing agent of the component B.
The further improvement lies in that: when stirring is performed in the first step, the second step and the third step, the stirring speed is controlled to be 400-800 r/min.
The invention has the beneficial effects that: according to the invention, the modified 90# asphalt is used as a main asphalt raw material to prepare the anionic emulsified asphalt, and the anionic emulsified asphalt has the advantages of quick demulsification time, good temperature stability, good compatibility, strong viscosity and excellent ageing resistance;
the modified 90# asphalt is adjusted by using sodium hydroxide as a pH regulator, so that the temperature stability, the mechanical stability, the compatibility and the emulsion breaking performance of the emulsified asphalt can be improved, the prepared rubber asphalt emulsion can overcome the defects that other emulsified asphalt applied to spraying waterproof paint is easy to cause blockage, caking, poor film forming property and the like, and the spraying and waterproof performance requirements of the sprayed rubber asphalt waterproof paint can be well met.
Drawings
FIG. 1 is a schematic flow chart of the preparation method of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
The embodiment provides a spraying quick-setting rubber asphalt waterproof coating, which comprises a component A and a component B, wherein the component A is a rubber asphalt emulsion composed of anionic emulsified asphalt, water-based latex and an additive, the component B is a liquid curing agent composed of calcium chloride and water, and the mass ratio of the rubber asphalt emulsion to the liquid curing agent in spraying is 10: 1;
the anionic emulsified asphalt comprises the following components in percentage by mass: the asphalt comprises 20 parts of asphalt, 20 parts of clear water, 0.15 part of anionic emulsifier, 0.1 part of pH regulator and 0.1 part of stabilizer, wherein the asphalt is refined 90# asphalt.
The component A comprises 10 parts of anionic emulsified asphalt, 1 part of water-based latex and 0.1 part of additive in parts by weight.
The additive is sodium hydroxymethyl cellulose.
The water-based latex is anionic styrene-butadiene latex or anionic chloroprene latex, and the solid content of the water-based latex is 40%.
The pH regulator is sodium hydroxide.
The stabilizer is triethyl hexyl phosphate.
The anionic emulsifier is alkyl sulfonate.
The mass percentage concentration of the liquid curing agent is 5%.
Example two
The embodiment provides a spraying quick-setting rubber asphalt waterproof coating, which comprises a component A and a component B, wherein the component A is a rubber asphalt emulsion composed of anionic emulsified asphalt, water-based latex and an additive, the component B is a liquid curing agent composed of calcium chloride and water, and the mass ratio of the rubber asphalt emulsion to the liquid curing agent in spraying is 10: 1;
the anionic emulsified asphalt comprises the following components in percentage by mass: 55 parts of asphalt, 40 parts of clear water, 1.15 parts of anionic emulsifier, 0.5 part of pH regulator and 0.5 part of stabilizer, wherein the asphalt is refined 90# asphalt.
The component A comprises 50 parts by mass of anionic emulsified asphalt, 25 parts by mass of water-based latex and 0.5 part by mass of an additive.
The additive is sodium hydroxymethyl cellulose.
The water-based latex is anionic styrene-butadiene latex or anionic chloroprene latex, and the solid content of the water-based latex is 50%.
The pH regulator is sodium hydroxide.
The stabilizer is methylene dinaphthalene sulfonate
The anionic emulsifier is alkyl benzene sulfonate.
The mass percentage concentration of the liquid curing agent is 25%.
EXAMPLE III
The embodiment provides a spraying quick-setting rubber asphalt waterproof coating, which comprises a component A and a component B, wherein the component A is a rubber asphalt emulsion composed of anionic emulsified asphalt, water-based latex and an additive, the component B is a liquid curing agent composed of calcium chloride and water, and the mass ratio of the rubber asphalt emulsion to the liquid curing agent in spraying is 10: 1;
the anionic emulsified asphalt comprises the following components in percentage by mass: the asphalt comprises 90 parts of asphalt, 60 parts of clear water, 0.15-2 parts of anionic emulsifier, 1 part of pH regulator and 1 part of stabilizer, wherein the asphalt is the masticated 90# asphalt.
The component A comprises 90 parts by mass of anionic emulsified asphalt, 50 parts by mass of water-based latex and 2 parts by mass of an additive.
The additive is sodium hydroxymethyl cellulose.
The water-based latex is anionic styrene-butadiene latex or anionic chloroprene latex, and the solid content of the water-based latex is 60%.
The pH regulator is sodium hydroxide.
The stabilizing agent is cellulose sodium sulfonate.
The anionic emulsifier is sodium alkyl naphthalene sulfonate.
The mass percentage concentration of the liquid curing agent is 40%.
Example four
According to the figure 1, the embodiment provides a preparation method of a spray rapid-hardening rubber asphalt waterproof coating, which comprises the following steps:
the method comprises the following steps: preparation of anionic emulsified asphalt
Firstly, adding a pH regulator (sodium hydroxide) into clear water to regulate the pH value of the clear water to 11;
adding an anionic emulsifier (sodium alkyl naphthalene sulfonate) into the clear water, heating to 55 ℃, and then stirring at a high speed to obtain an anionic emulsifier aqueous solution;
adding the anionic emulsifier aqueous solution into emulsified asphalt equipment for circular grinding;
heating asphalt (refined 90# asphalt) to 140 ℃ to obtain molten asphalt;
adding the molten asphalt into emulsified asphalt equipment, and carrying out high-speed shearing stirring on the molten asphalt and the anionic emulsifier aqueous solution together to obtain anionic emulsified asphalt;
step two: preparation of rubber asphalt emulsion of component A
At normal temperature, adding the water-based latex (ionic styrene-butadiene latex) and the additive (sodium carboxymethylcellulose) into stirring equipment, and uniformly stirring and premixing to obtain a premix;
slowly adding the anionic emulsified asphalt prepared in the step one into stirring equipment, and stirring the anionic emulsified asphalt and the premix together to obtain a rubber asphalt emulsion of the component A;
step three: preparation of liquid curing agent of component B
Grinding calcium chloride into 100-mesh calcium chloride powder at normal temperature, mixing and stirring the calcium chloride powder and water to obtain the liquid curing agent of the component B, and controlling the stirring speed to be 550r/min during stirring.
The prepared rubber asphalt emulsion of the three groups of components A is subjected to storage stability performance test according to SHT0099.5-2005 & lt & ltemulsified asphalt storage stability determination method & gt with the component proportions in the first, second and third examples and the preparation method in the fourth example, and the test results are shown in Table 1;
controlling the mass ratio of the rubber asphalt emulsion of the component A prepared in the three groups of embodiments to the component B (liquid curing agent) with the solid content of 25% to be 10:1, spraying and preparing a spraying quick-setting rubber asphalt waterproof membrane by using a two-component spraying device, and carrying out test piece manufacturing according to GB/T16777-2008 'test method for building waterproof coating', and testing performances such as bonding strength, tensile strength, elongation at break, low-temperature flexibility, heat resistance and the like, wherein the test results are shown in Table 2;
table 1 stability test of a-component in each example
| Sample (I) | 5d stability% | 180d stability% |
| Example one | 0.21 | 2.9 |
| Example two | 0.30 | 3.4 |
| EXAMPLE III | 0.25 | 3.1 |
Table 2 test results of waterproof layer performance after spraying of products of each example
As can be seen from tables 1 and 2, the anionic emulsified asphalt prepared by using the masticated 90# asphalt as a main asphalt raw material has the advantages of fast demulsification time, good temperature stability, good compatibility, strong viscosity and excellent ageing resistance;
the modified 90# asphalt is adjusted by using sodium hydroxide as a pH regulator, so that the temperature stability, the mechanical stability, the compatibility and the emulsion breaking performance of the emulsified asphalt can be improved, the prepared rubber asphalt emulsion can overcome the defects that other emulsified asphalt applied to spraying waterproof paint is easy to cause blockage, caking, poor film forming property and the like, and the spraying and waterproof performance requirements of the sprayed rubber asphalt waterproof paint can be well met.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The spraying quick-setting rubber asphalt waterproof coating is characterized by comprising the following components in parts by weight: the adhesive comprises a component A and a component B, wherein the component A is a rubber asphalt emulsion composed of anionic emulsified asphalt, water-based latex and an additive, the component B is a liquid curing agent composed of calcium chloride and water, and the mass ratio of the rubber asphalt emulsion to the liquid curing agent is 10:1 during spraying;
the anionic emulsified asphalt comprises the following components in percentage by mass: 20-90 parts of asphalt, 20-60 parts of clear water, 0.15-2 parts of anionic emulsifier, 0.1-1 part of pH regulator and 0.1-1 part of stabilizer, wherein the asphalt is the Classification 90# asphalt.
2. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the component A comprises 10-90 parts by mass of anionic emulsified asphalt, 1-50 parts by mass of water-based latex and 0.1-2 parts by mass of an additive.
3. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the additive is sodium hydroxymethyl cellulose.
4. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the water-based latex is anionic styrene-butadiene latex or anionic chloroprene latex, and the solid content of the water-based latex is 40-60%.
5. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the pH regulator is sodium hydroxide.
6. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the stabilizer is any one of triethyl hexyl phosphate, methylene dinaphthalene sulfonate and cellulose sodium sulfonate.
7. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the anionic emulsifier is any one of alkyl sulfonate, alkylbenzene sulfonate, alkyl naphthalene sulfonate and succinate sulfonate.
8. The spray coating quick-setting rubber asphalt waterproof coating material as claimed in claim 1, wherein: the mass percentage concentration of the liquid curing agent is 5-40%.
9. A preparation method of a spray-coating quick-setting rubber asphalt waterproof coating is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparation of anionic emulsified asphalt
Firstly, adding a pH regulator into clear water to regulate the pH value of the clear water to 9-13;
adding an anionic emulsifier into clear water, heating to 50-55 ℃, and then stirring at a high speed to obtain an anionic emulsifier aqueous solution;
adding the anionic emulsifier aqueous solution into emulsified asphalt equipment for circular grinding;
heating the asphalt to 140 ℃ to obtain molten asphalt;
adding the molten asphalt into emulsified asphalt equipment, and carrying out high-speed shearing stirring on the molten asphalt and the anionic emulsifier aqueous solution together to obtain anionic emulsified asphalt;
step two: preparation of rubber asphalt emulsion of component A
At normal temperature, adding the water-based latex and the additive into stirring equipment, and uniformly stirring and premixing to obtain a premix;
slowly adding the anionic emulsified asphalt prepared in the step one into stirring equipment, and stirring the anionic emulsified asphalt and the premix together to obtain a rubber asphalt emulsion of the component A;
step three: preparation of liquid curing agent of component B
At normal temperature, grinding calcium chloride into 120-mesh calcium chloride powder of 100 meshes, and then mixing and stirring the calcium chloride powder and water to obtain the liquid curing agent of the component B.
10. The preparation method of the spray quick-setting rubber asphalt waterproof coating according to claim 9, characterized in that: when stirring is performed in the first step, the second step and the third step, the stirring speed is controlled to be 400-800 r/min.
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Application publication date: 20210917 |