CN108003707B - Root puncture-resistant spraying quick-setting liquid rubber waterproof coating and preparation method thereof - Google Patents
Root puncture-resistant spraying quick-setting liquid rubber waterproof coating and preparation method thereof Download PDFInfo
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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
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Abstract
The invention discloses a root puncture-resistant spraying quick-setting liquid rubber waterproof coating and a preparation method thereof, wherein the root puncture-resistant spraying quick-setting liquid rubber waterproof coating comprises liquid rubber asphalt emulsion with solid content of 55-65% and a coagulant; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/10-1/5; the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 30-40 parts of common rubber latex, 25-35 parts of liquid rubber containing nano montmorillonite, 15-25 parts of curable cross-linked liquid rubber, 15-25 parts of asphalt emulsion, 0.5-1.0 part of anionic surfactant and 1-2 parts of nonionic surfactant; the coagulant comprises 10-15 parts of calcium chloride, 0.1-0.3 part of sodium chloride, 0.5-1.5 parts of composite aluminum-iron polymer and 80-90 parts of water. The waterproof and root-prick-proof coating disclosed by the invention is excellent in waterproof and root-prick-proof performances.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a root-puncture-resistant spraying quick-setting liquid rubber waterproof coating and a preparation method thereof.
Background
The green building is an important link in the current social development which needs to solve the problem of environmental protection, and the roof greening planting engineering is an important content of the energy-saving building and the green building. The green land on the roof can improve the air quality of the city, effectively relieve the urban heat island effect, promote the urban air landscape and play a particularly important role in protecting the environment.
The greening roof generally comprises plants, a waterproof root-blocking layer, a water drainage and storage device, a heat insulation layer and the like, wherein the waterproof root-blocking layer is particularly important, and has the dual functions of waterproofing and root-blocking, can bear the puncture of plant roots, can keep the waterproofing function for a long time, and cannot influence the normal growth of the plants. In summary, the waterproof root-blocking layer needs to have both high-strength puncture resistance and tear resistance to ensure resistance to plant root hairs and water impermeability under high pressure. Meanwhile, the construction operation is convenient and simple.
At present, waterproof root-resistant layers of green roofs generally use waterproof coiled materials such as SBS modified asphalt, PVC or TPO and the like added with chemical root-resistant agents. In the construction process of the waterproof roll materials, the overlapped seams are required to be very tight, and the problem that the seams are generated due to the infirm overlapping cannot exist. Therefore, in the actual use process, the construction of the waterproof roll material is required to meet the requirements, and the construction can be performed only by high-tech construction workers.
At present, a root-resisting agent is generally added into raw materials of a waterproof root-resisting layer so as to achieve the effect of root prick resistance. For example: chinese patent CN106630811A discloses a nano polymer cement waterproof paint and a preparation method thereof, wherein the waterproof paint comprises a liquid material and a powder material, the liquid material comprises 850-880 parts of acrylate emulsion and 5-8 parts of a root-resisting agent; the powder comprises 490-505 parts of cement and 95-105 parts of nano particles; the nano particles are nano silicon dioxide and nano zeolite.
Chinese patent CN105733432A discloses 'a high modulus polyurethane waterproof coating and a preparation method thereof'. The waterproof coating consists of A, B two components; the component A comprises the following components in percentage by weight: 0-33 parts of toluene diisocyanate, 35-82 parts of diphenylmethane diisocyanate, 115-137 parts of polyether polyol and 15-30 parts of dioctyl phthalate; the component B comprises the following components in percentage by weight: 65-79 parts of polyether triol; 29-35 parts of 3, 3-dichloro-4, 4-diaminodiphenylmethane; 10-35 parts of chlorinated paraffin; 55-100 parts of a filler; 1-2 parts of a catalyst; chemical root-resisting agent B51-2 parts; and (4) defoaming agent B-0346-15 parts.
The products prepared by the patent method can achieve the qualified result of the root resistance puncture performance test. However, chemical root-retarding agents are added to all the waterproof coatings. At present, the chemical root-resisting agent is mainly imported from foreign countries, and the cost is very high; and the existing waterproof coating also needs high-tech technical workers to complete the construction.
In view of the above, the technology of spraying quick-setting liquid rubber is widely used in the building waterproofing process, and can replace waterproof coiled materials or existing waterproof coatings.
The spraying quick-setting liquid rubber waterproof coating mainly comprises more than two high-performance modified emulsified rubber asphalt emulsions and a coagulant, and has a two-component system for quick initial setting and solidification. Besides the advantages of the traditional waterproof coating, the waterproof coating also has the following characteristics:
1) the spraying of the rapid-hardening liquid rubber waterproof coating adopts a spraying construction mode, the construction is simple, rapid and convenient, the effect is improved, the sprayed product forms a film in a large area, and the overlapping problem of coiled materials does not exist;
2) the product can be rapidly initially solidified, the film forming speed is high, and the initial solidification time is only 3-7 seconds;
3) when the thickness of the coating film is 1-4mm, the film can be formed at one time, and the time, the labor and the efficiency are saved;
4) the method has strong adaptability to the site, wide requirements on the base layer and non-harsh construction conditions, is suitable for various special-shaped base surfaces, and only needs the base surface to be clean and free of open water.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a root-piercing-resistant spraying quick-setting liquid rubber waterproof coating. According to the detection standard of GB/T16777-2008 'test method for building waterproof paint', the waterproof paint has the waterproof performance of 0.8MPa and is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for building waterproof coating', the tensile strength of the waterproof coating is not less than 15.0 MPa; according to the detection standard of the tearing strength in section 10 of GB/T16777-2008 'test method for building waterproof coating', the tearing strength of the waterproof coating is not less than 50.0 kN/m. The test result passes according to a root penetration resistance performance test method in standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
The second technical problem to be solved by the invention is to provide a preparation method of the root-piercing-resistant spraying quick-setting liquid rubber waterproof coating.
In order to solve the first technical problem, the invention adopts the following technical scheme:
a root-resistant, spray-coating and quick-setting liquid rubber waterproof coating comprises liquid rubber asphalt emulsion with solid content of 55-65% and a coagulant; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/10-1/5;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 30-40 parts of common rubber latex, 25-35 parts of liquid rubber containing nano montmorillonite, 15-25 parts of curable cross-linked liquid rubber, 15-25 parts of asphalt emulsion, 0.5-1.0 part of anionic surfactant and 1-2 parts of nonionic surfactant;
the coagulant comprises 10-15 parts of calcium chloride, 0.1-0.3 part of sodium chloride, 0.5-1.5 parts of composite aluminum-iron polymer and 80-90 parts of water.
As a further improvement of the technical solution, the common rubber latex comprises natural rubber latex or synthetic rubber latex; the synthetic rubber latex comprises one or more of styrene-butadiene rubber, nitrile rubber, ethylene propylene rubber, chloroprene rubber, chlorobutylene rubber, butadiene styrene copolymer rubber and the like.
As a further improvement of the technical scheme, the preparation method of the liquid rubber containing the nano montmorillonite comprises the following steps:
1) dispersing 20-50 parts by weight of montmorillonite with the cation exchange capacity of 50-150meq/100g into 900 parts by weight of deionized water of 700-900 parts, and uniformly stirring to form stable suspension A; dissolving 10-20 parts by weight of cationic modifier in 60-100 parts by weight of deionized water, adding 3-6 parts by weight of protonating agent, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 70-90 ℃, adding the emulsion B into the suspension A, stirring for 1-3 hours, and collecting the organic nano montmorillonite;
2) 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 4-8 parts of organic nano montmorillonite, 10-20 parts of toluene diisocyanate and 0.1-0.3 part of dibutyltin dilaurate by weight are uniformly stirred, and vacuum degassing is carried out at 50-70 ℃ for reaction for 2-3 hours to prepare the liquid rubber containing nano montmorillonite.
Preferably, the cationic modifier is a cationic surfactant, and may be selected from one of dodecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide, octadecyl trimethyl ammonium chloride or octadecyl dimethyl benzyl ammonium chloride.
Preferably, the protonating agent is selected from one of phosphoric acid, hydrochloric acid or sulfuric acid.
As a further improvement of the technical scheme, the curable cross-linked liquid rubber is prepared by taking a styrene block copolymer as a starting material and performing halomethylation to prepare a halomethylated styrene block copolymer; then preparing side hydroxymethylated styrene block copolymer; finally, esterifying by using enoyl chloride to prepare the solidifiable liquid rubber containing side chain double bonds. The curable cross-linked liquid rubber used in the present invention was prepared according to the preparation method disclosed in chinese patent application CN 106749783A.
As a further improvement of the technical scheme, the anionic surfactant comprises one or more of carboxylate, sulfate, sulfonate or phosphate.
As a further improvement of the technical solution, the nonionic surfactant includes one or more of polyoxyethylene type, polyhydric alcohol type and polyether type.
In order to solve the second technical problem, the invention provides a preparation method of a root puncture-resistant spray-fast-setting liquid rubber waterproof coating, which comprises the following steps:
s1, preparing the liquid rubber asphalt emulsion with the solid content of 55-65 percent
Heating 30-40 parts by weight of common rubber latex to 30-50 ℃, then sequentially adding 15-25 parts by weight of asphalt emulsion, 25-35 parts by weight of liquid rubber containing nano montmorillonite, 15-20 parts by weight of curable cross-linked liquid rubber, 0.5-1.0 part by weight of anionic surfactant and 1-2 parts by weight of nonionic surfactant, uniformly emulsifying by high-speed shearing and stirring, and cooling to 20-25 ℃ to prepare liquid rubber asphalt emulsion with the solid content of 55-65%;
s2 preparation of coagulant
Adding 10-15 parts by weight of calcium chloride, 0.1-0.3 part by weight of sodium chloride and 0.5-1.5 parts by weight of composite aluminum-iron polymer into 80-90 parts by weight of water, and uniformly stirring to obtain the coagulant.
The liquid rubber asphalt emulsion and the coagulant are alternately sprayed on the waterproof and root-prick-proof base surface by utilizing the prior disclosed spraying equipment.
A large number of tests prove that the waterproof root-resistant layer formed by spraying and combining the liquid rubber containing the nano-montmorillonite, the curable cross-linked liquid rubber, the common liquid rubber, the asphalt and the like prepared by a specific method has a compact three-dimensional network structure, and the waterproof coating with excellent root resistance can be obtained under the condition of not using a chemical root-resistant agent.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
The starting materials of the present invention are commercially available, unless otherwise specified, and the equipment used in the present invention may be any equipment conventionally used in the art or may be any equipment known in the art.
Compared with the prior art, the invention has the following beneficial effects:
according to the detection standard of GB/T16777-2008 'test method for building waterproof paint', the waterproof paint prepared by the invention has the waterproof performance of 0.8MPa and is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for building waterproof coating', the tensile strength of the waterproof coating is not less than 15.0 MPa; according to the detection standard of the tearing strength in section 10 of GB/T16777-2008 'test method for building waterproof coating', the tearing strength of the waterproof coating is not less than 50.0 kN/m. The test result of the root puncture resistance performance test method of the waterproof coiled material in standard appendix A of JC/T1075-2008 'root puncture resistance waterproof coiled material for planted roofs' passes.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The invention relates to a root-puncture-resistant spraying quick-setting liquid rubber waterproof coating, which comprises liquid rubber asphalt emulsion with solid content of 55-65% and a coagulant; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/10-1/5;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 30-40 parts of common rubber latex, 25-35 parts of liquid rubber containing nano montmorillonite, 15-25 parts of curable cross-linked liquid rubber, 15-25 parts of asphalt emulsion, 0.5-1.0 part of anionic surfactant and 1-2 parts of nonionic surfactant;
the coagulant comprises 10-15 parts of calcium chloride, 0.1-0.3 part of sodium chloride, 0.5-1.5 parts of composite aluminum-iron polymer and 80-90 parts of water.
In certain embodiments of the present invention, the common rubber latex comprises a natural rubber latex or a synthetic rubber latex; the synthetic rubber latex comprises one or more of styrene-butadiene rubber, nitrile rubber, ethylene propylene rubber, chloroprene rubber, chlorobutylene rubber, butadiene styrene copolymer rubber and the like.
In some embodiments of the present invention, the liquid rubber containing nano montmorillonite is prepared by the following method:
1) dispersing 20-50 parts by weight of montmorillonite with the cation exchange capacity of 50-150meq/100g into 700-900 parts by weight of deionized water, and uniformly stirring to form stable suspension A; dissolving 10-20 parts by weight of cationic modifier in 60-100 parts by weight of deionized water, adding 3-6 parts by weight of protonating agent, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 70-90 ℃, adding the emulsion B into the suspension A, stirring for 1-3 hours, and collecting the organic nano montmorillonite;
2) 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 4-8 parts of organic nano montmorillonite, 10-20 parts of toluene diisocyanate and 0.1-0.3 part of dibutyltin dilaurate by weight are uniformly stirred, and vacuum degassing is carried out at 50-70 ℃ for reaction for 2-3 hours to prepare the liquid rubber containing nano montmorillonite.
In certain preferred embodiments of the present invention, the cationic modifier is a cationic surfactant, and may be selected from one of dodecyltrimethylammonium bromide, hexadecyltrimethylammonium bromide, octadecyltrimethylammonium chloride, or octadecyldimethylbenzylammonium chloride.
In certain preferred embodiments of the present invention, the protonating agent is selected from one of phosphoric acid, hydrochloric acid or sulfuric acid.
In certain embodiments of the present invention, the curable cross-linked liquid rubber is prepared by halomethylation of a styrenic block copolymer as a starting material to form a halomethylated styrenic block copolymer; then preparing side hydroxymethylated styrene block copolymer; finally, esterifying by using enoyl chloride to prepare the solidifiable liquid rubber containing side chain double bonds. The curable cross-linked liquid rubber used in the present invention was prepared according to the preparation method disclosed in chinese patent application CN 106749783A.
In certain embodiments of the invention, the anionic surfactant comprises one or more of carboxylates, sulfates, sulfonates, or phosphate salts. For example: sodium lauryl sulfate, alkylbenzenesulfonates, alkylsulfonates, fatty acid sulfoalkyl esters, succinate sulfonates, alkylnaphthalene sulfonates, petroleum sulfonates, lignosulfonates, alkylglyceryl ether sulfonates, and the like.
In certain embodiments of the present invention, the nonionic surfactant comprises one or more of a polyoxyethylene type, a polyol type, and a polyether type. For example: polyoxyethylene ethers of alkylphenols, fatty alcohol polyoxyethylene ethers, fatty acid methyl ester polyoxyethylene ethers, and the like.
The invention relates to a preparation method of a root puncture-resistant spraying quick-setting liquid rubber waterproof coating, which comprises the following steps:
s1, preparing the liquid rubber asphalt emulsion with the solid content of 55-65 percent
Heating 30-40 parts by weight of common rubber latex to 30-50 ℃, then sequentially adding 15-25 parts by weight of asphalt emulsion, 25-35 parts by weight of liquid rubber containing nano montmorillonite, 15-20 parts by weight of curable cross-linked liquid rubber, 0.5-1.0 part by weight of anionic surfactant and 1-2 parts by weight of nonionic surfactant, uniformly emulsifying by high-speed shearing and stirring, and cooling to 20-25 ℃ to prepare liquid rubber asphalt emulsion with the solid content of 55-65%;
s2 preparation of coagulant
Adding 10-15 parts by weight of calcium chloride, 0.1-0.3 part by weight of sodium chloride and 0.5-1.5 parts by weight of composite aluminum-iron polymer into 80-90 parts by weight of water, and uniformly stirring to obtain the coagulant.
The liquid rubber asphalt emulsion and the coagulant are alternately sprayed on the waterproof and root-prick-proof base surface by utilizing the prior disclosed spraying equipment.
Example 1
The preparation method of the liquid rubber containing the nano montmorillonite comprises the following steps:
1) dispersing 20 parts of montmorillonite with the cation exchange capacity of 50-150meq/100g into 700-parts of deionized water, and uniformly stirring to form stable suspension A; dissolving 10 parts of dodecyl trimethyl ammonium bromide in 60-100 parts of deionized water, adding 3-6 parts of phosphoric acid, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 70 ℃, adding the emulsion B into the suspension A, stirring for 1 hour, and collecting the organic nano montmorillonite;
2) 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 4 parts of organic nano montmorillonite, 10 parts of toluene diisocyanate and 0.1 part of dibutyltin dilaurate are uniformly stirred, and vacuum degassing is carried out at 50 ℃ for 2 hours to react, so as to prepare the liquid rubber A containing nano montmorillonite.
Example 2
The preparation method of the liquid rubber containing the nano montmorillonite comprises the following steps:
1) dispersing 50 parts of montmorillonite with the cation exchange capacity of 50-150meq/100g into 900 parts of deionized water, and uniformly stirring to form stable suspension A; dissolving 20 parts of hexadecyl trimethyl ammonium bromide in 100 parts of deionized water, adding 6 parts of sulfuric acid, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 90 ℃, adding the emulsion B into the suspension A, stirring for 3 hours, and collecting the organic nano montmorillonite;
2) 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 8 parts of organic nano montmorillonite, 20 parts of toluene diisocyanate and 0.3 part of dibutyltin dilaurate are uniformly stirred, vacuum degassing is carried out at 70 ℃, and reaction is carried out for 3 hours, so as to prepare the liquid rubber B containing nano montmorillonite.
Example 3
The preparation method of the liquid rubber containing the nano montmorillonite comprises the following steps:
1) dispersing 40 parts of montmorillonite with the cation exchange capacity of 50-150meq/100g into 800 parts of deionized water, and uniformly stirring to form stable suspension A; dissolving 15 parts of octadecyl trimethyl ammonium chloride in 60-100 parts of deionized water, adding 3-6 parts of hydrochloric acid, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 80 ℃, adding the emulsion B into the suspension A, stirring for 2 hours, and collecting the organic nano montmorillonite;
2) 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 6 parts of organic nano montmorillonite, 15 parts of toluene diisocyanate and 0.2 part of dibutyltin dilaurate are uniformly stirred, vacuum degassing is carried out at 60 ℃, and reaction is carried out for 3 hours, so as to prepare the nano montmorillonite-containing liquid rubber C.
Example 4
The curable cross-linked liquid rubber is prepared by taking a styrene block copolymer as an initial raw material through halomethylation to prepare a halomethylated styrene block copolymer; then preparing side hydroxymethylated styrene block copolymer; finally, esterifying by using enoyl chloride to prepare the solidifiable liquid rubber containing side chain double bonds. The curable cross-linked liquid rubber used in this example was the product No. 6-3 prepared according to example 1 disclosed in Chinese patent application CN 106749783A. The prepared curable crosslinked liquid rubber is ready for use.
Example 5
A root-piercing-resistant spraying quick-setting liquid rubber waterproof coating comprises liquid rubber asphalt emulsion with the solid content of 55 percent and a setting agent; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/10;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 30 parts of styrene-butadiene rubber, 25 parts of liquid rubber A containing nano montmorillonite prepared in example 1, 15 parts of curable cross-linked liquid rubber obtained in example 4, 15 parts of asphalt emulsion, 0.5 part of sodium dodecyl sulfate and 1 part of alkylphenol polyoxyethylene;
the coagulant comprises 10 parts of calcium chloride, 0.1 part of sodium chloride, 0.5 part of composite aluminum-iron polymer and 80 parts of water.
The preparation method of the root puncture-resistant spraying quick-setting liquid rubber waterproof coating comprises the following steps:
heating 30 parts by weight of styrene-butadiene rubber to 30 ℃, then sequentially adding 15 parts by weight of asphalt emulsion, 25 parts by weight of liquid rubber A containing nano-montmorillonite, 15 parts by weight of curable cross-linked liquid rubber, 0.5 part by weight of sodium dodecyl sulfate and 1 part by weight of alkylphenol polyoxyethylene, uniformly emulsifying by high-speed shearing and stirring, cooling to 20 ℃, and preparing liquid rubber asphalt emulsion, wherein the solid content is adjusted to 55%;
adding 10 parts by weight of calcium chloride, 0.1 part by weight of sodium chloride and 0.5 part by weight of composite aluminum-iron polymer into 80 parts by weight of water, and uniformly stirring to obtain the coagulant.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying rapid-setting root-prick-resistant waterproof layer.
According to the root-prick-resistant waterproof layer prepared by the embodiment, the waterproof property can reach 0.8MPa according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building', and the waterproof layer is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coating for building', the tensile strength of the root-prick resistant waterproof layer of the embodiment is 15.9 MPa; according to the detection standard of 'tear strength' in section 10 of GB/T16777-2008 'test method for waterproof building coatings', the tear strength of the root-prick resistant waterproof layer of the embodiment is 50.2 kN/m. The test result passes according to a root penetration resistance performance test method in standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
Example 6
A root-piercing-resistant spraying quick-setting liquid rubber waterproof coating comprises a liquid rubber asphalt emulsion with the solid content of 65 percent and a coagulant with the concentration of 15 percent by weight; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/5;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 40 parts of nitrile rubber, 35 parts of liquid rubber B containing nano montmorillonite prepared in example 2, 25 parts of curable cross-linked liquid rubber obtained in example 4, 25 parts of asphalt emulsion, 1 part of sodium alkyl benzene sulfonate and 2 parts of fatty alcohol-polyoxyethylene ether;
the coagulant comprises 15 parts of calcium chloride, 0.3 part of sodium chloride, 1 part of composite aluminum-iron polymer and 90 parts of water.
The preparation method of the root puncture-resistant spraying quick-setting liquid rubber waterproof coating comprises the following steps:
heating 40 parts by weight of nitrile rubber to 50 ℃, then sequentially adding 25 parts by weight of asphalt emulsion, 35 parts by weight of liquid rubber B containing nano-montmorillonite, 25 parts by weight of curable cross-linked liquid rubber, 1 part by weight of sodium dodecyl benzene sulfonate and 2 parts by weight of fatty alcohol-polyoxyethylene ether, uniformly emulsifying by high-speed shearing and stirring, cooling to 25 ℃, preparing liquid rubber asphalt emulsion, and adjusting the solid content to 65%;
adding 15 parts by weight of calcium chloride, 0.3 part by weight of sodium chloride and 1 part by weight of composite aluminum-iron polymer into 90 parts by weight of water, and uniformly stirring to prepare a coagulant.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying rapid-setting root-prick-resistant waterproof layer.
According to the root-prick-resistant waterproof layer prepared by the embodiment, the waterproof property can reach 0.8MPa according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building', and the waterproof layer is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coating for building', the tensile strength of the root-prick resistant waterproof layer of the embodiment is 15.1 MPa; according to the detection standard of 'tear strength' in section 10 of GB/T16777-2008 'test method for waterproof building coatings', the tear strength of the root-prick resistant waterproof layer of the embodiment is 51.2 kN/m. The test result passes according to a root penetration resistance performance test method in standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
Example 7
A root puncture resistant spraying quick-setting liquid rubber waterproof coating comprises: comprises a liquid rubber asphalt emulsion with solid content of 60 percent and a coagulant; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/8;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 35 parts of chloroprene rubber, 30 parts of liquid rubber C containing nano montmorillonite prepared in example 3, 20 parts of curable cross-linked liquid rubber obtained in example 4, 20 parts of asphalt emulsion, 0.8 part of sodium dodecyl sulfate and 1.5 parts of fatty acid methyl ester polyoxyethylene ether;
the coagulant comprises 12 parts of calcium chloride, 0.2 part of sodium chloride, 0.8 part of composite aluminum-iron polymer and 85 parts of water.
The preparation method of the root puncture-resistant spraying quick-setting liquid rubber waterproof coating comprises the following steps:
heating 35 parts by weight of chloroprene rubber to 40 ℃, then sequentially adding 20 parts by weight of asphalt emulsion, 30 parts by weight of liquid rubber C containing nano-montmorillonite, 20 parts by weight of curable cross-linked liquid rubber, 0.8 part by weight of sodium dodecyl sulfate and 1.5 parts by weight of fatty acid methyl ester polyoxyethylene ether, uniformly emulsifying by high-speed shearing and stirring, cooling to 23 ℃, and preparing liquid rubber asphalt emulsion, wherein the solid content is adjusted to 65%;
adding 12 parts by weight of calcium chloride, 0.2 part by weight of sodium chloride and 0.8 part by weight of composite aluminum-iron polymer into 85 parts by weight of water, and uniformly stirring to obtain a coagulant.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying rapid-setting root-prick-resistant waterproof layer.
According to the root-prick-resistant waterproof layer prepared by the embodiment, the waterproof property can reach 0.8MPa according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building', and the waterproof layer is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coatings for buildings', the tensile strength of the waterproof coating of the embodiment is 15.3 MPa; the tear strength of the waterproof coating material of the present example was 51.4kN/m according to the test standard of "tear strength" in section 10 of GB/T16777-2008 "test method for waterproof coating materials for buildings". The test result passes according to a root penetration resistance performance test method in standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
Comparative example 1
Example 5 was repeated except that the curable crosslinked liquid rubber obtained in example 4 was not added to the raw materials and the styrene-butadiene rubber was increased by 15 parts so that the total weight of the raw materials was the same as that of example 5.
Namely, the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 45 parts of styrene-butadiene rubber, 25 parts of liquid rubber A containing nano montmorillonite prepared in example 1, 15 parts of asphalt emulsion, 0.5 part of sodium dodecyl sulfate and 1 part of alkylphenol polyoxyethylene;
the coagulant comprises 10 parts of calcium chloride, 0.1 part of sodium chloride, 0.5 part of composite aluminum-iron polymer and 80 parts of water.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying quick-setting waterproof membrane.
The waterproof membrane prepared by the comparative example has the waterproof performance of 0.6MPa and is impermeable for 30min according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building'; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coating for building', the tensile strength of the waterproof coating of the comparative example is 10.2 MPa; the tear strength of the waterproof coating of the comparative example is 31kN/m according to the detection standard of 'tear strength' in section 10 of GB/T16777-2008 'test method for waterproof coatings for buildings'. The test result is unqualified according to the root penetration resistance test method in the standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
Comparative example 2
Example 6 was repeated except that the liquid rubber B containing nano-montmorillonite prepared in example 2 was not added to the raw materials and the amount of nitrile rubber was increased by 35 parts so that the total weight of the raw materials was the same as that of example 6.
Namely, the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 75 parts of nitrile rubber, 25 parts of curable cross-linked liquid rubber prepared in example 4, 25 parts of asphalt emulsion, 1 part of sodium alkyl benzene sulfonate and 2 parts of fatty alcohol-polyoxyethylene ether;
the coagulant comprises 15 parts of calcium chloride, 0.3 part of sodium chloride, 1 part of composite aluminum-iron polymer and 90 parts of water.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying quick-setting waterproof membrane.
The waterproof membrane prepared by the comparative example has the waterproof performance of 0.5MPa according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building', and is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coating for building', the tensile strength of the waterproof coating of the comparative example is 10.8 MPa; the tear strength of the waterproof coating of the comparative example is 29kN/m according to the detection standard of 'tear strength' in section 10 of GB/T16777-2008 'test method for waterproof coatings for buildings'. The test result is unqualified according to the root penetration resistance test method in the standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
Comparative example 3
Example 7 was repeated with the difference that: the liquid rubber C containing the nano montmorillonite prepared in the example 3 and the curable cross-linked liquid rubber prepared in the example 4 are not added in the raw materials, and the chloroprene rubber is added by 50 parts, so that the total weight of the raw materials is the same as that of the raw materials in the example 7.
Namely, the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 85 parts of chloroprene rubber, 20 parts of asphalt emulsion, 0.8 part of sodium dodecyl sulfate and 1.5 parts of fatty acid methyl ester polyoxyethylene ether;
the coagulant comprises 12 parts of calcium chloride, 0.2 part of sodium chloride, 0.8 part of composite aluminum-iron polymer and 85 parts of water.
And (3) alternately spraying the liquid rubber asphalt emulsion and the coagulant on the base surface by using spraying equipment to obtain the spraying quick-setting waterproof membrane.
The waterproof membrane prepared by the comparative example has the waterproof performance of 0.3MPa according to the detection standard of GB/T16777-2008 'test method for waterproof coating for building', and is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for waterproof coating for building', the tensile strength of the waterproof coating of the comparative example is 2.70 MPa; the tear strength of the waterproof coating of the comparative example is 21kN/m according to the detection standard of 'tear strength' in section 10 of GB/T16777-2008 'test method for waterproof coatings for buildings'. The test result is unqualified according to the root penetration resistance test method in the standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
In conclusion, under the condition that no chemical root-resisting agent is added, the waterproof coating disclosed by the invention has the advantages that through the mutual matching and coordination of the raw materials, the waterproof performance can reach 0.8MPa according to the detection standard of GB/T16777-2008 'test method for building waterproof coatings', and the waterproof coating is impermeable for 30 min; according to the detection standard of 'tensile strength' in section 9 of GB/T16777-2008 'test method for building waterproof coating', the tensile strength of the waterproof coating is not less than 15.0 MPa; according to the detection standard of the tearing strength in section 10 of GB/T16777-2008 'test method for building waterproof coating', the tearing strength of the waterproof coating is not less than 50.0 kN/m. The test result passes according to a root penetration resistance performance test method in standard appendix A of JC/T1075-2008 'root penetration resistance waterproof coiled material for planted roof'.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (8)
1. A root puncture resistant spraying quick-setting liquid rubber waterproof coating is characterized in that: comprises liquid rubber asphalt emulsion with solid content of 55-65% and coagulant; the spraying capacity ratio of the coagulant to the liquid rubber asphalt emulsion is 1/10-1/5;
the liquid rubber asphalt emulsion comprises the following raw materials in parts by weight: 30-40 parts of common rubber latex, 25-35 parts of liquid rubber containing nano montmorillonite, 15-25 parts of curable cross-linked liquid rubber, 15-25 parts of asphalt emulsion, 0.5-1.0 part of anionic surfactant and 1-2 parts of nonionic surfactant;
the coagulant comprises 10-15 parts of calcium chloride, 0.1-0.3 part of sodium chloride, 0.5-1.5 parts of composite aluminum-iron polymer and 80-90 parts of water;
the preparation method of the liquid rubber containing the nano montmorillonite comprises the following steps:
1) dispersing 20-50 parts by weight of montmorillonite with the cation exchange capacity of 50-150meq/100g into 700-900 parts by weight of deionized water, and uniformly stirring to form stable suspension A; dissolving 10-20 parts by weight of cationic modifier in 60-100 parts by weight of deionized water, adding 3-6 parts by weight of protonating agent, stirring and emulsifying to form uniformly dispersed emulsion B; heating the suspension A to 70-90 ℃, adding the emulsion B into the suspension A, stirring for 1-3 hours, and collecting the organic nano montmorillonite;
2) uniformly stirring 100 parts by weight of hydroxyl-terminated polybutadiene liquid rubber, 4-8 parts by weight of organic nano montmorillonite, 10-20 parts by weight of toluene diisocyanate and 0.1-0.3 part by weight of dibutyltin dilaurate, degassing in vacuum at 50-70 ℃, and reacting for 2-3 hours to obtain liquid rubber containing nano montmorillonite;
the curable cross-linked liquid rubber is prepared by taking a styrene block copolymer as an initial raw material through halomethylation to prepare a halomethylated styrene block copolymer; then preparing side hydroxymethylated styrene block copolymer; finally, esterifying by using enoyl chloride to prepare the solidifiable liquid rubber containing side chain double bonds.
2. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material as claimed in claim 1, characterized in that: the common rubber latex comprises natural rubber latex or synthetic rubber latex; the synthetic rubber latex comprises one or more of styrene butadiene rubber, nitrile rubber, ethylene propylene rubber and chloroprene rubber.
3. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material as claimed in claim 1, characterized in that: the cationic modifier is a cationic surfactant.
4. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material according to claim 3, characterized in that: the cationic surfactant is selected from one of dodecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide, octadecyl trimethyl ammonium chloride or octadecyl dimethyl benzyl ammonium chloride.
5. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material as claimed in claim 1, characterized in that: the protonating agent is selected from one of phosphoric acid, hydrochloric acid or sulfuric acid.
6. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material as claimed in claim 1, characterized in that: the anionic surfactant comprises one or more of carboxylate, sulfate, sulfonate or phosphate.
7. The root puncture resistant spray rapid-setting liquid rubber waterproof coating material as claimed in claim 1, characterized in that: the nonionic surfactant includes one or more of polyoxyethylene type, polyhydric alcohol type and polyether type.
8. The method for preparing the root penetration resistant spray quick-setting liquid rubber waterproof coating as claimed in any one of claims 1 to 7, comprising the steps of:
s1, preparing the liquid rubber asphalt emulsion with the solid content of 55-65 percent
Heating 30-40 parts by weight of common rubber latex to 30-50 ℃, then sequentially adding 15-25 parts by weight of asphalt emulsion, 25-35 parts by weight of liquid rubber containing nano montmorillonite, 15-20 parts by weight of curable cross-linked liquid rubber, 0.5-1.0 part by weight of anionic surfactant and 1-2 parts by weight of nonionic surfactant, uniformly emulsifying by high-speed shearing and stirring, and cooling to 20-25 ℃ to prepare liquid rubber asphalt emulsion with the solid content of 55-65%;
s2 preparation of coagulant
Adding 10-15 parts by weight of calcium chloride, 0.1-0.3 part by weight of sodium chloride and 0.5-1.5 parts by weight of composite aluminum-iron polymer into 80-90 parts by weight of water, and uniformly stirring to obtain the coagulant.
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| CN103627258B (en) * | 2012-08-23 | 2015-01-07 | 山东北方创信防水技术有限公司 | Spraying quick-setting rubber asphalt waterproof coating material |
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