Antifouling color pavement antiskid coating and preparation method and application thereof

Abstract

The present application belongs to the technical field of road paving, and particularly relates to an anti-fouling color pavement antiskid coating, a preparation method and application thereof. The pavement antiskid coating comprises silicone-modified acrylic resin, active diluent, combined initiator, nano-titanium dioxide, nano-silicon dioxide, rheological agent, pigment, polymerization inhibitor, leveling agent and wetting dispersant. The color pavement antiskid coating has not only the adhesion and weather resistance and color retention of the acrylic resin, but also the excellent anti-fouling property, water resistance and corrosion resistance of the silicone resin. The silicone-modified acrylic resin is a copolymer resin with side-chain siloxane, which is prepared by free radical copolymerization of silicone intermediate and acrylate oligomer, can realize normal-temperature crosslinking, improves the coating film performance, and further improves the anti-fouling and antibacterial performance of the pavement antiskid coating by the self-cleaning function of the nano filler. The color recycled antiskid ceramic is mainly used in the construction of cold-coating type thin-layer color antiskid pavement.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of road paving, and particularly relates to an anti-fouling colored pavement anti-skid coating material and a preparation method and application thereof, which is mainly used in cold-coating type thin-layer colored anti-skid pavement construction. BACKGROUND

[0002] With the continuous development of urban road construction and automobile industry in China, the improvement of traffic has brought great convenience to our travel, but at the same time, the increasing number of motor vehicles has also put forward higher requirements for road traffic safety.

[0003] The colored anti-skid pavement is a resin-based pavement anti-skid system, which comprises a special formula resin-based coating material and colored anti-skid aggregates of different specifications. The coating material is spread on the asphalt or cement pavement in a certain amount, and then the anti-skid aggregates are scattered. Compared with the conventional cement asphalt pavement, the colored anti-skid pavement has the dual functions of inducing traffic and beautifying the environment, can significantly improve the anti-skid performance of the original pavement, greatly shorten the braking distance of the vehicle, provide a comfortable and safe driving environment, and prolong the service life of the original pavement. At present, there are various pavement anti-skid coating materials on the domestic market, which are divided into hot-melt type and cold-coating type according to whether heating is required during construction. The hot-melt type coating material needs to add thermoplastic resin and powder additives into a heating kettle for melting, and then is coated on the pavement by using a special trolley. After being hardened, the coating material is shaped. The operation is complex. In comparison, the cold-coating type colored pavement anti-skid coating material does not need heating and special coating equipment during construction. Only the resin-based material and the curing agent are mixed in proportion, and then are spread on the pavement by rolling, and the anti-skid particle layer is added. After chemical cross-linking reaction, the coating material is cured into a tough paint film to form a colored anti-skid pavement. The commonly used types of cold-coating type colored pavement resin-based material include acrylic type, epoxy type and polyurethane type. Since the acrylic resin not only has firm adhesion and good color retention, but also has excellent temperature variation performance and weather resistance, it is most widely used in pavement anti-skid coating materials.

[0004] The patent with the publication number CN106010375A discloses a water-based adhesive for anti-skid pavement and a preparation method thereof. The adhesive uses acrylic homopolymer emulsion as a base material, is sensitive to temperature, and has the phenomenon of hot adhesion and cold brittleness. The addition of propylene glycol phenyl ether will reduce the stability of the emulsion and affect the stain resistance of the coating. The adhesive uses an organic emulsion and inorganic powder two-component system, but the compatibility is poor, which affects the performance of the coating film.

[0005] The patent with the publication number CN102776816A discloses a construction method of an anti-pollution and durable colored thin-layer anti-skid pavement. The adhesive uses nitrile rubber modified epoxy resin as a cementing material, and the modification mechanism is complex. It is difficult to guarantee the toughening effect of the mixture, and the patent does not further explain the realization of the anti-pollution performance.

[0006] This invention uses silicone-modified acrylic resin as the coating base material, making full use of the advantages of both. The resulting anti-skid road surface coating not only has the excellent color and weather resistance of acrylic resin, but also the water resistance and stain resistance of silicone, resulting in an anti-fouling anti-skid road surface coating with excellent comprehensive performance. Summary of the Invention

[0007] This invention addresses the above-mentioned problems by providing a stain-resistant colored pavement anti-skid coating with excellent anti-fouling properties, good mechanical properties, good adhesion, corrosion resistance, and solvent resistance, as well as a method for preparing the stain-resistant colored pavement anti-skid coating.

[0008] To achieve the above objectives, the present invention employs the following technical solution:

[0009] A stain-resistant colored anti-slip coating for road surfaces, characterized in that it comprises the following raw materials in parts by weight:

[0010] The composition includes 50-65 parts of silicone-modified acrylic resin, 20-25 parts of reactive diluent, 0.1-0.3 parts of combined initiator, 6-10 parts of nano titanium dioxide, 6-10 parts of nano silica, 3-5 parts of rheology modifier, 0.1-0.3 parts of pigment, 0.05-0.1 parts of polymerization inhibitor, 0.1-0.3 parts of leveling agent, and 0.2-0.6 parts of wetting and dispersing agent.

[0011] Furthermore, the organosilicon-modified acrylic resin is synthesized from organosilicon monomers containing double bonds, cyclic organosilicon monomers, and acrylate prepolymers; the organosilicon monomers containing double bonds are one or a mixture of several in any proportion of vinyltrimethoxysilane, vinyltriethoxysilane, methacryloxypropyldiethoxymethylsilane, γ-methacryloxypropyltrimethoxysilane, and γ-methacryloxypropyltriethoxysilane; the cyclic organosilicon monomers are one or a mixture of two in any proportion of octamethylcyclotetrasilane and 1,3,5,7-tetramethylcyclotetrasiloxane; the acrylate prepolymers are one or a mixture of several in any proportion of polyester acrylates, polyether acrylates, polyurethane acrylates, and epoxy acrylates.

[0012] Furthermore, the molecular weight of the silicone-modified acrylic resin is between 8,000 and 50,000.

[0013] Furthermore, the reactive diluent is one or a mixture of several of the following in any proportion: tripropylene glycol diacrylate, 1,6-hexanediol diacrylate, and trimethylolpropane triacrylate.

[0014] Furthermore, the combined initiator is a mixture of azobisisobutyronitrile and one of dialkoxyacetophenone, α-hydroxyalkylacetophenone, α-aminealkylacetophenone, and benzophenone.

[0015] Further, the nano-titanium dioxide is 20-50 nm of rutile type nano-titanium dioxide, and the nano-silicon dioxide is 30-80 nm of nano-silicon dioxide.

[0016] Further, the rheological agent is one of fumed white carbon black and organic clay; the pigment is one of organic pigment and inorganic pigment; the polymerization inhibitor is one of hydroquinone, p-phenol and methoxyphenol; the leveling agent is polyether modified organosiloxane; and the wetting dispersant is one or both of polyethylene glycol and long-chain acrylate copolymer.

[0017] The application further provides a preparation method of the anti-fouling color pavement anti-skid coating.

[0018] Step 1: preparation of the silicone intermediate: under a nitrogen atmosphere, organic silicon monomers with double bonds, cyclic organic silicon monomers and an acidic catalyst are mixed to perform a polymerization reaction, the acidic catalyst is removed after the reaction, and low-boiling monomers are removed by distillation to obtain the silicone intermediate;

[0019] Step 2: preparation of the silicone modified acrylic resin: the mixed solvent and the silicone intermediate are mixed, stirred and heated, the mixed acrylate pre-polymer and the initiator are added dropwise, and the reaction is carried out after the dropwise addition is completed; and low-boiling solvents are removed by distillation after the reaction to obtain the silicone modified acrylic resin.

[0020] Step 3: preparation of the anti-fouling color pavement anti-skid coating: at room temperature, the active diluent, the polymerization inhibitor, the leveling agent and the wetting dispersant are measured according to the mass fraction, mixed and stirred and dispersed, the pigment is added and stirred and dispersed, the nano-titanium dioxide, the nano-silicon dioxide and the rheological agent are measured according to the mass fraction and added and stirred and dispersed, the silicone modified acrylic resin is measured according to the mass fraction and added and stirred and dispersed, the initiator is added before discharging and packaging, and the anti-fouling color pavement anti-skid coating is prepared.

[0021] Further, in step 1, the organic silicon monomers with double bonds and the cyclic organic silicon monomers are 74-145 parts and 120-148 parts respectively according to the mass fraction, the polymerization reaction is carried out at 80℃ for 6 h.

[0022] Further, in step 2, the mixed solvent, the silicone intermediate, the acrylate pre-polymer and the initiator are 35-60 parts, 25-40 parts, 55-75 parts and 0.05 parts respectively according to the mass fraction, the mixed solvent is dimethylbenzene and butyl acetate, and the initiator is azobisisobutyronitrile.

[0023] This invention utilizes organosilicon monomers containing double bonds and cyclic structures to synthesize organosilicon intermediates. These intermediates are then combined with acrylate prepolymers to synthesize organosilicon-modified acrylic resins with side chains containing organosiloxanes. This modified acrylic resin is used as a film-forming material. Reactive diluents and combined initiators are added, along with pigments and fillers such as nano-titanium dioxide, nano-silica, rheology modifiers, and pigments, as well as some additives, to prepare a stain-resistant colored anti-skid road surface coating. The chemical modification of the organosilicon resin endows it with the advantages of both organosilicon and acrylic resins. The addition of organosilicon improves the acrylic resin's resistance to organic solvents, resulting in a coating with excellent stain and water resistance, good weather resistance, and a glossy finish. Furthermore, the organosilicon-modified acrylic resin with side chains containing organosiloxanes is a thermosetting resin, resulting in a coating with high crosslinking degree, significantly improving the mechanical properties of the colored anti-skid road surface coating.

[0024] This invention also provides an application of a stain-resistant colored anti-skid pavement coating, used in conjunction with colored recycled anti-skid ceramsite, primarily for use in cold-applied thin-layer colored anti-skid pavement construction. The dosage of this stain-resistant colored anti-skid pavement coating is 2–2.5 kg / m². 2 The dosage of colored recycled anti-slip ceramsite used in conjunction is 5-8 kg / m³. 2 This invention relates to colored road surface anti-skid aggregate, which uses colored recycled anti-skid ceramsite. This aggregate is made from solid waste materials such as fly ash, sludge, and tailings, processed at high temperatures to meet road performance requirements while achieving the reuse of solid waste. The particle size of the recycled anti-skid ceramsite is generally 1–4 mm. Depending on the application scenario, the particle size is 1–2 mm for non-motorized vehicle lanes and sidewalks, and 2–4 mm for motorized vehicle lanes.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] (1) The present invention uses an active diluent to replace traditional solvents such as toluene and butyl acetate. It not only has the effect of diluting and reducing viscosity, but also participates in the cross-linking reaction during the curing process of the coating, becoming a component of the coating and reducing the irritating odor of traditional solvents.

[0027] (2) The addition of nano-titanium dioxide and nano-silica in this invention not only serves as a filler, but also, due to the small size effect and interface effect of nanomaterials, gives the coating properties such as anti-fouling, self-cleaning, antistatic, antibacterial, and anti-ultraviolet.

[0028] (3) The present invention uses high-boiling-point, low-odor acrylate prepolymers to replace acrylic monomers in the synthesis of resin, thereby improving the odor.

[0029] (4) The system of the present application adds a photo initiator and a thermal initiator, which can realize deep curing, solve the problem that photocuring is difficult to apply in colored systems, and due to the presence of siloxane, the coating can also be cured by moisture, greatly shortening the curing time and widening the environmental conditions for application of the anti-skid coating.

[0030] (5) In the process of preparing the coating, the wetting dispersant and other auxiliaries are first stirred and dispersed, then the pigments are stirred and added, among which the polyethylene glycol wetting dispersant is added to the inorganic pigments, the long-chain acrylate copolymer wetting dispersant is added to the organic pigments, then the filler component is stirred and added, and finally the silicone-modified acrylic resin is added, which is conducive to the dispersion and viscosity stability of the system. DETAILED DESCRIPTION

[0031] In order to further illustrate the technical solutions of the present application, the present application will be further illustrated by examples.

[0032] Example 1

[0033] An anti-fouling colored pavement anti-skid coating comprises the following raw materials in parts by weight:

[0034] 50 parts of silicone-modified acrylic resin, 25 parts of active diluent, 0.1 part of combined initiator, 10 parts of nano-titanium dioxide, 10 parts of nano-silicon dioxide, 3 parts of rheological agent, 0.1 part of pigment, 0.05 part of polymerization inhibitor, 0.1 part of leveling agent, and 0.2 part of wetting dispersant.

[0035] The active diluent of the present example is tripropylene glycol diacrylate, the combined initiator is azobisisobutyronitrile and dialkoxyacetophenone, the nano-titanium dioxide is 20-50 nm rutile type nano-titanium dioxide, the nano-silicon dioxide is 30-80 nm nano-silicon dioxide, the rheological agent is organic clay, the pigment is organic pigment, the polymerization inhibitor is hydroquinone, the leveling agent is polyether-modified organosiloxane, and the wetting dispersant is long-chain acrylate copolymer.

[0036] The preparation method of the anti-fouling colored pavement anti-skid coating of the present example comprises the following steps:

[0037] (1) Preparation of silicone intermediate: in a three-necked flask under nitrogen protection, 95 parts of vinyltriethoxysilane, 120 parts of 1.3.5.7-tetramethylcyclotetrasiloxane, and an acidic catalyst are added, polymerization is carried out at 80℃ for 6h, the catalyst is removed, low-boiling monomers are removed by distillation at 175℃, and the silicone intermediate is obtained.

[0038] (2) Preparation of silicone-modified acrylic resin: In a three-necked flask equipped with a condenser and a stirring device, 40 parts of a mixed solvent of xylene and butyl acetate and 25 parts of the silicone intermediate obtained in (1) were added, and the mixture was stirred and heated to 80°C. Then, 55 parts of polyether acrylate prepolymer and 0.05 parts of azobisisobutyronitrile were added dropwise over a period of 3 h, and the reaction temperature was controlled at 85°C. After the dropwise addition was completed, the mixture was kept at 150°C for 1 h to remove low-boiling solvents by distillation, thereby obtaining the silicone-modified acrylic resin.

[0039] (3) Preparation of anti-fouling colored pavement anti-skid coating: At room temperature, 25 parts of tripropylene glycol diacrylate, 0.05 parts of hydroquinone, 0.1 parts of polyether-modified organosiloxane, and 0.2 parts of long-chain acrylate copolymer were weighed and added to a dispersing kettle, and stirred and dispersed for 1 min. Then, 0.1 parts of organic pigment was added at a stirring speed of 500 r / min, and stirred and dispersed for 5 min. Then, 10 parts of nano-titanium dioxide, 10 parts of nano-silicon dioxide, and 3 parts of organic clay were weighed and added to the dispersing kettle, and dispersed at a stirring speed of 1800 r / min for 10 min. Then, 50 parts of the self-prepared silicone-modified acrylic resin was weighed and added to the dispersing kettle, and dispersed again at a stirring speed of 1800 r / min for 20 min. Before discharging and packaging, 0.1 parts of azobisisobutyronitrile and dialkoxyacetophenone were added, thereby obtaining the anti-fouling colored pavement anti-skid coating.

[0040] Example 2

[0041] An anti-fouling colored pavement anti-skid coating includes the following raw materials in parts by weight:

[0042] Silicone-modified acrylic resin 55 parts, reactive diluent 25 parts, combined initiator 0.15 parts, nano-titanium dioxide 10 parts, nano-silicon dioxide 10 parts, rheological agent 3 parts, pigment 0.15 parts, polymerization inhibitor 0.05 parts, leveling agent 0.2 parts, wetting dispersant 0.3 parts.

[0043] In this example, the reactive diluent is 1,6-hexanediol diacrylate, the combined initiator is azobisisobutyronitrile and α-hydroxyalkyl phenone, the nano-titanium dioxide is 20-50 nm rutile type nano-titanium dioxide, the nano-silicon dioxide is 30-80 nm nano-silicon dioxide, the rheological agent is fumed white carbon black, the pigment is inorganic pigment, the polymerization inhibitor is hydroquinone, the leveling agent is polyether-modified organosiloxane, and the wetting dispersant is polyethylene glycol.

[0044] The preparation method of the anti-fouling colored pavement anti-skid coating of this example includes the following steps:

[0045] (1) Preparation of silicone intermediate, in a three-necked flask under nitrogen protection, 130 parts of methacryloxypropyl diethoxymethyl silane, 120 parts of 1.3.5.7-tetramethylcyclotetrasiloxane, an acidic catalyst were added, polymerization was carried out at 80°C for 6h, the catalyst was removed, low boiling monomers were removed by distillation at 175°C, and a silicone intermediate was obtained.

[0046] (2) Preparation of silicone modified acrylic resin, in a three-necked flask equipped with a condenser and a stirring device, 35 parts of a mixed solvent of xylene and butyl acetate and 20 parts of the silicone intermediate obtained in (1) were added, stirring was carried out to raise the temperature to 80°C, 40 parts of a polyurethane acrylate prepolymer and 0.05 parts of azobisisobutyronitrile were added dropwise, the dropping was completed in 3h, and the reaction temperature was controlled at 90°C. After the dropping was completed, the reaction was maintained for 1h, low boiling solvents were removed by distillation at 150°C, and a silicone modified acrylic resin was obtained.

[0047] (3) Preparation of anti-fouling colored pavement anti-skid coating, at room temperature, 25 parts of 1,6-hexanediol diacrylate, 0.05 parts of p-phenol, 0.2 parts of polyether modified siloxane, 0.3 parts of polyethylene glycol, 0.15 parts of inorganic pigment were measured and added to a dispersing kettle, stirring and dispersing were carried out for 1min, then 0.15 parts of inorganic pigment was added at a stirring speed of 500r / min, stirring and dispersing were carried out for 5min; 10 parts of nano titanium dioxide, 10 parts of nano silicon dioxide, and 3 parts of fumed white carbon black were measured and added to the dispersing kettle, dispersing was carried out at a stirring speed of 1500r / min for 10min; 55 parts of the self-made silicone modified acrylic resin was measured and added to the dispersing kettle, dispersing was carried out again at a stirring speed of 1500r / min for 25min, 0.15 parts of azobisisobutyronitrile and α-hydroxyalkyl phenone were added before discharging and packaging, and an anti-fouling colored pavement anti-skid coating was prepared.

[0048] Example 3

[0049] An anti-fouling colored pavement anti-skid coating comprises the following raw materials in parts by weight:

[0050] Silicone modified acrylic resin 60 parts, reactive diluent 20 parts, combined initiator 0.2 parts, nano titanium dioxide 8 parts, nano silicon dioxide 8 parts, rheological agent 5 parts, pigment 0.25 parts, polymerization inhibitor 0.1 parts, leveling agent 0.25 parts, wet dispersing agent 0.5 parts.

[0051] In this example, the reactive diluent is trimethylolpropane triacrylate, the combined initiator is azobisisobutyronitrile and α-aminalkyl phenone, the nano titanium dioxide is 20-50nm rutile type nano titanium dioxide, the nano silicon dioxide is 30-80nm nano silicon dioxide, the rheological agent is organic clay, the pigment is organic pigment, the polymerization inhibitor is methoxy phenol, the leveling agent is polyether modified organosiloxane, and the wet dispersing agent is long chain acrylate copolymer.

[0052] The preparation method of the anti-fouling color pavement anti-skid coating of the embodiment comprises the following steps:

[0053] (1) Preparation of silicone intermediate. In a three-necked flask under nitrogen protection, 74 parts of vinyltrimethoxysilane, 148 parts of octamethylcyclotetrasiloxane, and an acidic catalyst were added, and polymerization was carried out at 80°C for 6h. The catalyst was removed, and low-boiling monomers were removed by distillation at 175°C to obtain a silicone intermediate.

[0054] (2) Preparation of silicone-modified acrylic resin. In a three-necked flask equipped with a condenser and a stirring device, 50 parts of a mixed solvent of xylene and butyl acetate and 30 parts of the silicone intermediate obtained in (1) were added. The mixture was stirred and heated to 80°C. 60 parts of polyester acrylate prepolymer and 0.05 parts of azobisisobutyronitrile were added dropwise over 3h, and the reaction temperature was controlled at 80°C. After the dropwise addition was completed, the mixture was incubated for 1h. Low-boiling solvents were removed by distillation at 150°C to obtain a silicone-modified acrylic resin.

[0055] (3) Preparation of anti-fouling color pavement anti-skid coating. At room temperature, 20 parts of trimethylolpropane triacrylate, 0.1 parts of methoxyphenol, 0.25 parts of polyether-modified organosiloxane, and 0.5 parts of long-chain acrylate copolymer were weighed and added to a dispersing kettle. The mixture was stirred and dispersed for 2min. Then, 0.25 parts of organic pigment was added at a stirring speed of 500r / min, and the mixture was stirred and dispersed for 5min. 8 parts of nano-titanium dioxide, 8 parts of nano-silicon dioxide, and 5 parts of organic clay were weighed and added to the dispersing kettle. The mixture was dispersed at a stirring speed of 2000r / min for 10min. 60 parts of the self-prepared silicone-modified acrylic resin was weighed and added to the dispersing kettle. The mixture was dispersed again at a stirring speed of 2000r / min for 25min. Before discharging and packaging, 0.2 parts of azobisisobutyronitrile and α-amine alkyl phenone were added to prepare the anti-fouling color pavement anti-skid coating.

[0056] Example 4

[0057] An anti-fouling color pavement anti-skid coating comprises the following raw materials in parts by weight:

[0058] 65 parts of silicone-modified acrylic resin, 20 parts of active diluent, 0.3 parts of combined initiator, 6 parts of nano-titanium dioxide, 6 parts of nano-silicon dioxide, 4 parts of rheological agent, 0.3 parts of pigment, 0.1 parts of polymerization inhibitor, 0.3 parts of leveling agent, and 0.6 parts of wet dispersing agent.

[0059] The active diluent of this example is tripropyleneglycol diacrylate, the combined initiator is azobisisobutyronitrile and benzophenone, the nano-titanium dioxide is 20-50 nm of rutile type nano-titanium dioxide, the nano-silica is 30-80 nm of nano-silica, the rheological agent is fumed white carbon black, the pigment is inorganic pigment, the polymerization inhibitor is hydroquinone, the leveling agent is polyether modified organosiloxane, and the wetting dispersant is polyethylene glycol.

[0060] The preparation method of the anti-fouling color pavement anti-skid coating of this example comprises the following steps:

[0061] (1) Preparation of silicone intermediate, in a three-necked flask under nitrogen protection, 124 parts of γ-methacryloxypropyltrimethoxysilane, 148 parts of octamethylcyclotetrasiloxane and an acidic catalyst were added, polymerization was carried out at 80°C for 6 h, the catalyst was removed, and low-boiling monomers were removed by distillation at 175°C to obtain the silicone intermediate.

[0062] (2) Preparation of silicone-modified acrylic resin, in a three-necked flask equipped with a condenser and a stirring device, 60 parts of a mixed solvent of xylene and butyl acetate and 40 parts of the silicone intermediate obtained in (1) were added, stirring was carried out to heat to 80°C, 75 parts of polyurethane acrylate prepolymer and 0.05 parts of azobisisobutyronitrile were added dropwise, the dropping was completed in 3 h, and the reaction temperature was controlled at 90°C. After the dropping was completed, the reaction was maintained for 1 h, low-boiling solvents were removed by distillation at 150°C to obtain the silicone-modified acrylic resin.

[0063] (3) Preparation of anti-fouling color pavement anti-skid coating, at room temperature, tripropyleneglycol diacrylate 20 parts, hydroquinone 0.1 parts, polyether modified organosiloxane 0.3 parts, polyethylene glycol 0.6 parts, inorganic pigment 0.3 parts, nano-titanium dioxide 6 parts, nano-silica 6 parts, fumed white carbon black 4 parts, and 65 parts of the self-prepared silicone-modified acrylic resin were weighed and added to the dispersing kettle, and dispersed for 10 min at a stirring speed of 2000 r / min; the anti-fouling color pavement anti-skid coating was prepared by adding azobisisobutyronitrile and benzophenone 0.3 parts before discharging and packaging.

[0064] Example 5

[0065] An anti-fouling color pavement anti-skid coating comprises the following raw materials in parts by weight:

[0066] Silicone modified acrylic resin 58 parts, reactive diluent 22 parts, combined initiator 0.2 parts, nano titanium dioxide 7 parts, nano silicon dioxide 7 parts, rheological agent 4 parts, pigment 0.25 parts, polymerization inhibitor 0.1 parts, leveling agent 0.3 parts, wet dispersing agent 0.6 parts.

[0067] The active diluent of the present embodiment is tripropylene glycol diacrylate, the combined initiator is azobisisobutyronitrile and benzophenone, the nano titanium dioxide is 20-50 nm of rutile type nano titanium dioxide, the nano silicon dioxide is 30-80 nm of nano silicon dioxide, the rheological agent is organic clay, the pigment is organic pigment, the polymerization inhibitor is hydroquinone, the leveling agent is polyether modified organosiloxane, and the wet dispersing agent is long chain acrylate copolymer.

[0068] The preparation method of the anti-fouling colored pavement anti-skid coating of the present embodiment comprises the following steps:

[0069] (1) Preparation of silicone intermediate, in a three-necked flask under nitrogen protection, 145 parts of γ-methacryloxypropyl triethoxysilane, 120 parts of 1.3.5.7-tetramethylcyclotetrasiloxane, and an acidic catalyst were added, polymerized at 80℃ for 6h, the catalyst was removed, and low boiling monomers were removed by distillation at 175℃ to obtain the silicone intermediate.

[0070] (2) Preparation of silicone modified acrylic resin, a three-necked flask equipped with a condenser and a stirring device was charged with 45 parts of a mixed solvent of xylene and butyl acetate and 35 parts of the silicone intermediate obtained in (1), and stirred to warm up to 80℃, then 65 parts of polyurethane acrylate prepolymer and 0.05 parts of azobisisobutyronitrile were added dropwise, the reaction temperature was controlled at 90℃, and the dropping was completed in 3h. After the dropping was completed, the reaction was maintained for 1h, and low boiling solvents were removed by distillation at 150℃ to obtain the silicone modified acrylic resin.

[0071] (3) Preparation of anti-fouling colored pavement anti-skid coating, at room temperature, tripropylene glycol diacrylate 22 parts, hydroquinone 0.1 parts, polyether modified organosiloxane 0.3 parts, and long chain acrylate copolymer 0.6 parts were weighed and added to a dispersing kettle, stirred and dispersed for 1.5 min, then organic pigment 0.25 parts was added at a stirring speed of 500 r / min, and stirred and dispersed for 5 min; nano titanium dioxide 7 parts, nano silicon dioxide 7 parts, and organic clay 4 parts were weighed and added to the dispersing kettle, dispersed at a stirring speed of 1700 r / min for 10 min; 58 parts of the self-made silicone modified acrylic resin was weighed and added to the dispersing kettle, dispersed again at a stirring speed of 1700 r / min for 22 min, and azobisisobutyronitrile and benzophenone 0.2 parts were added before discharging and packaging to prepare the anti-fouling colored pavement anti-skid coating.

[0072] The anti-fouling color pavement antiskid coating prepared in Examples 1-5 is subjected to performance test, and the results are shown in Table 1.

[0073] Table 1: Performance test results of Examples 1-5

[0074]

[0075] It can be seen that the anti-fouling color pavement antiskid coating prepared in the application has excellent performance, and is used in combination with color recycled antiskid ceramic particles, mainly in the construction of cold-coated thin-layer color antiskid pavement. The dosage of the anti-fouling color pavement antiskid coating in the application is 2-2.5 kg / m 2 , and the dosage of the color recycled antiskid ceramic particles used in combination is 5-8 kg / m 2 . The color pavement antiskid aggregate in the application uses color recycled antiskid ceramic particles, which are made of fly ash, sludge, tailings and other solid waste materials after high-temperature firing, and meet the requirements of road performance, thereby realizing the recycling of solid waste. The particle size of the recycled antiskid ceramic particles is generally 1-4 mm, and according to different use scenarios, the particle size is 1-2 mm for non-motor vehicle lanes and sidewalks, and the particle size is 2-4 mm for motor vehicle lanes.

[0076] The above is only an example for more clearly illustrating the application, and does not limit the application in any form. Any simple modification, equivalent replacement or improvement of the above examples made by those skilled in the art within the technical scope disclosed in the application shall be covered within the protection scope of the technical scheme of the application.

[0077] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of changes or replacements, which shall be covered within the protection scope of the application. Therefore, the protection scope of the application shall be subject to the protection scope of the claims.

Claims

1. An anti-stain colored pavement non-slip coating, characterized by, The raw materials include the following weight parts: The silicone modified acrylic resin 50-65 parts, active diluent 20-25 parts, combined initiator 0.1-0.3 parts, nano titanium dioxide 6-10 parts, nano silicon dioxide 6-10 parts, rheological agent 3-5 parts, pigment 0.1-0.3 parts, polymerization inhibitor 0.05-0.1 parts, leveling agent 0.1-0.3 parts, wet dispersing agent 0.2-0.6 parts; The molecular weight of the silicone modified acrylic resin is 8000-50000, which is synthesized from a double bond containing silicone monomer, a cyclic silicone monomer and an acrylic ester pre-polymer; the double bond containing silicone monomer is a mixture of vinyl trimethoxysilane, vinyl triethoxysilane, methacryloxypropyl diethoxymethylsilane, gamma-methacryloxypropyl trimethoxysilane and gamma-methacryloxypropyl triethoxysilane in any proportion; the cyclic silicone monomer is a mixture of octamethylcyclotetrasilane and 1.3.5.7-tetramethylcyclotetrasiloxane in any proportion; and the acrylic ester pre-polymer is a mixture of polyester acrylate, polyether acrylate, polyurethane acrylate and epoxy acrylate in any proportion; The preparation steps of the silicone modified acrylic resin are as follows: Step 1, preparation of silicone intermediate: under nitrogen atmosphere, the double bond containing silicone monomer, the cyclic silicone monomer and the acidic catalyst are mixed to carry out polymerization reaction, the acidic catalyst is removed after the reaction is completed, and the low boiling monomer is removed by distillation to obtain the silicone intermediate; Step 2, preparation of silicone modified acrylic resin: the mixed solvent and the silicone intermediate are mixed, stirred and heated, the mixed acrylic ester pre-polymer and the initiator are added dropwise, the reaction is carried out after the dropwise addition is completed, and the low boiling solvent is removed by distillation after the reaction is completed to obtain the silicone modified acrylic resin; The anti-fouling color pavement anti-skid coating is used with color recycled anti-skid ceramic aggregate, which is made of fly ash, sludge and tailings through high temperature firing.

2. The anti-fouling colored pavement antiskid coating according to claim 1, characterized in that, The active diluent is a mixture of tripropylene glycol diacrylate, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate in any proportion.

3. The anti-fouling colored pavement non-slip coating according to claim 1, characterized in that, The combined initiator is a mixture of azobisdimethyl isobutyronitrile and one of the following: dialkoxyacetophenone, alpha-hydroxyalkyl phenone, alpha-amine alkyl phenone and benzophenone.

4. The anti-fouling colored pavement non-slip coating according to claim 1, characterized in that, The nano titanium dioxide is 20-50 nm rutile type nano titanium dioxide, and the nano silicon dioxide is 30-80 nm nano silicon dioxide.

5. The anti-fouling colored pavement non-slip coating according to claim 1, characterized in that, The rheological agent is one of fumed white carbon black and organic clay; the pigment is one of organic pigment and inorganic pigment; the polymerization inhibitor is one of hydroquinone and methoxy phenol; the leveling agent is polyether modified organosiloxane; and the wet dispersing agent is one or both of polyethylene glycol and long chain acrylate copolymer.

6. A method for preparing the anti-staining colored pavement antiskid coating as claimed in any one of claims 1 to 5, characterized in that, The method includes the following steps: The method includes the following steps: Step 1, preparation of silicone intermediate: under nitrogen atmosphere, the organic silicon monomer containing double bond, cyclic organic silicon monomer and acid catalyst are mixed to carry out polymerization reaction, after the reaction is completed, the acid catalyst is removed, and the low boiling monomer is distilled to obtain the silicone intermediate; Step 2, preparation of silicone modified acrylic resin: the mixed solvent and the silicone intermediate are mixed, stirred and heated, the mixed acrylate prepolymer and the initiator are added dropwise, after the dropwise addition is completed, the reaction is carried out, after the reaction is completed, the low boiling solvent is distilled to obtain the silicone modified acrylic resin; Step 3, preparation of anti-fouling color pavement anti-skid coating: at room temperature, the active diluent 20-25 parts, the polymerization inhibitor 0.05-0.1 parts, the leveling agent 0.1-0.3 parts and the wetting dispersant 0.2-0.6 parts are measured and added, and then the pigment 0.1-0.3 parts is added and stirred and dispersed; the nano titanium dioxide 6-10 parts, the nano silicon dioxide 6-10 parts and the rheological agent 3-5 parts are measured and added and stirred and dispersed; the silicone modified acrylic resin 50-65 parts is measured and added and stirred and dispersed, the combined initiator 0.1-0.3 parts is added before discharging and packaging to obtain the anti-fouling color pavement anti-skid coating.

7. The method of claim 6, wherein the anti-fouling colored pavement non-slip coating is prepared by mixing the anti-fouling colored pavement non-slip coating composition with water in a weight ratio of 1: 1 to 1:

3. In step 1, the organic silicon monomer containing double bond and the cyclic organic silicon monomer are 74-145 parts and 120-148 parts respectively by mass fraction, the polymerization reaction temperature is 80℃, and the time is 6h; In step 2, the mixed solvent, the silicone intermediate, the acrylate prepolymer and the initiator are 35-60 parts, 25-40 parts, 55-75 parts and 0.05 parts respectively by mass fraction, the mixed solvent is xylene and butyl acetate, and the initiator is azobisisobutyronitrile.

8. Use of the anti-staining, colored pavement slip-resistant coating according to any one of claims 1 to 5, characterized in that, The color recycled anti-skid ceramic is used in combination to be used for cold-coated thin-layer color anti-skid pavement.

9. The use of an anti-fouling, colored pavement slip-resistant coating according to claim 8, characterized in that, The anti-fouling color pavement antiskid coating is 2-2.5kg / m 2 , and the color recycled antiskid ceramic particle is 5-8kg / m 2 .

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