An anti-fouling marking paint, its preparation method and application

Abstract

The application discloses an anti-fouling marking paint as well as a preparation method and application thereof. The anti-fouling marking paint comprises component A and component B. The preparation raw material of the component A comprises an active resin which comprises the following preparation raw materials: hydroxy acrylic acid, chloro-terminated dimethyl polysiloxane and perfluoropolyether carboxylic acid. The active resin containing fluorine and silicon is used in combination with the main body resin, the surface energy of the marking paint is reduced, and the obtained anti-fouling marking paint has excellent anti-fouling performance and long-term anti-fouling capacity.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of traffic transportation coatings, and particularly relates to an anti-fouling marking paint as well as a preparation method and application thereof. BACKGROUND

[0002] Road marking paint is a coating used for marking traffic lines on highways, airports, residential areas, etc. Due to pollution by automobile tires, soil, road asphalt and particulate matter in automobile exhaust, the marking paint is prone to have reduced line clarity, affecting the safety of road traffic.

[0003] Currently, the preparation of a coating with anti-fouling function mainly involves adding some raw materials with low surface tension or changing the construction method to achieve the anti-fouling effect. For example, Chinese Patent CN114736581A discloses an environmentally friendly high-anti-fouling hot melt marking paint. The paint increases the anti-fouling and decontamination by adding zinc acrylate and coconut oil diethanolamide. The marking paint has environmental protection and anti-fouling performance. However, the patent uses carbon five petroleum resin as a film-forming material. The aging performance of this resin is not as good as that of acrylic marking paint, and the resin has poor adhesion to glass beads.

[0004] For another example, Chinese Patent CN110079138A discloses a high-density anti-fouling marking paint. The patent obtains a high-density marking paint by spraying the primer and then immediately spraying the topcoat, achieving the anti-fouling effect. However, the technology has many construction steps and high construction requirements.

[0005] Therefore, the present application provides an anti-fouling marking paint to solve the problems in the background art. SUMMARY

[0006] The present application aims to provide an anti-fouling marking paint to solve at least one aspect of the problems and defects in the background art.

[0007] The present application also provides a preparation method of the anti-fouling marking paint.

[0008] The present application also provides an application of the anti-fouling marking paint.

[0009] The present application provides an anti-fouling marking paint, which comprises component A and component B. The component A comprises a modified active resin.

[0010] The structure of the active resin is as follows:

[0011]

[0012] wherein n is in the range of 5-20.

[0013] m is 10-40.

[0014] According to the two-component marking paint technical scheme of the application, at least the following beneficial effects are achieved:

[0015] In the application, the active resin is added to the marking paint to achieve the anti-fouling effect, the active resin has a large number of Si-O bonds, and the performance of inorganic materials and organic materials is considered, the active resin has the characteristics of low surface tension, small viscosity coefficient and small surface energy, and has good anti-fouling performance, and a large number of fluorine atoms are introduced into the active resin, for a certain structure of polymer, the higher the fluorine content, the lower the surface energy, and the anti-fouling performance is further improved.

[0016] In the application, the main resin in the marking paint is modified by a physical blending method to achieve the anti-fouling effect of the marking paint, the active resin is uniformly dispersed between the main resin molecules, and the double bond in the active resin can participate in the curing polymerization reaction when the marking paint is cured, and a multi-dimensional polymer is formed, thereby providing the marking material with anti-fouling performance.

[0017] In some specific embodiment schemes of the application, n is 6-15.

[0018] In the application, if n is too low, the fluorine segment is too short, and the fluorine atom is too few, the low surface tension cannot be provided, the anti-fouling effect cannot be achieved, if n is too high, the fluorine segment is too long, and the steric hindrance is too large, the active resin cannot participate in the curing reaction, and finally the anti-fouling performance is affected.

[0019] In some specific embodiment schemes of the application, m is 12-35.

[0020] In the application, if m is too low, the surface energy cannot be low, and the good anti-fouling effect cannot be achieved, if m is too high, the silicon-oxygen bond is too long, and finally the crosslinking density of the active resin in the participation of crosslinking and curing is affected, and the performance is affected.

[0021] In some specific embodiment schemes of the application, the active resin comprises the following preparation raw materials: chloro-terminated dimethyl polysiloxane, hydroxy acrylate and perfluoro polyether carboxylic acid.

[0022] In the application, the substitution reaction of hydroxy acrylate and chloro-containing polysiloxane can introduce the hydroxy-containing acrylate into the organic silicon molecule, and then the dehydration condensation reaction of the hydroxy in the molecule and the carboxyl in the perfluoro polyether carboxylic acid is used, and finally the active resin containing fluorine and silicon atoms is obtained.

[0023] In some specific embodiment schemes of the application, the preparation raw materials of the active resin further comprise tetrahydrofuran and.

[0024] In some embodiments of the present application, the preparation of the active resin comprises the following steps: drop hydroxyacrylic acid into a mixture of chloro-terminated dimethyl polysiloxane and tetrahydrofuran under stirring, react after drop completion, rotary evaporation, obtain silicone active body, mix the silicone active body with perfluoropolyether carboxylic acid, and heat to obtain the active resin.

[0025] In some embodiments of the present application, the reaction temperature after drop completion is 40-50°C.

[0026] In some embodiments of the present application, the reaction temperature after drop completion is 45°C.

[0027] In some embodiments of the present application, the reaction time after drop completion is 2-3.5h.

[0028] In some embodiments of the present application, the reaction time after drop completion is 2.5h.

[0029] In some embodiments of the present application, the drop speed is 1-2ml / min.

[0030] In the present application, since the hydroxyacrylic acid has high activity, it is easy to self-polymerize during substitution reaction, thus it needs to be slowly dropped into the chloro-terminated dimethyl polysiloxane solution for substitution reaction.

[0031] In some embodiments of the present application, the acid value of the active resin is 5-15mgKOH / g.

[0032] In some embodiments of the present application, the mass ratio of the hydroxyacrylic acid and tetrahydrofuran is 1:40-55.

[0033] In some embodiments of the present application, the mass ratio of the chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid and perfluoropolyether carboxylic acid is 5.1-8.6:1:2.2-4.0.

[0034] In the present application, by controlling the mass ratio of the hydroxyacrylic acid and chloro-terminated dimethyl polysiloxane, the chlorine atoms in the chloro-terminated dimethyl polysiloxane are completely replaced by the hydroxyacrylic acid, and the by-products generated by self-condensation of the hydroxyacrylic acid are reduced.

[0035] In the present application, by controlling the mass ratio of the chloro-terminated dimethyl polysiloxane and perfluoropolyether carboxylic acid, the active resin has the characteristics of low surface energy.

[0036] In some embodiments of the present application, the A component comprises the following raw materials by weight: 45-65 parts of methyl methacrylate, 5-10 parts of active resin, 30-45 parts of pigment filler, 0.5-2 parts of organic bentonite, 0.2-0.5 parts of fumed silica, and 2-6 parts of accelerator.

[0037] The present application uses methyl methacrylate as the main film-forming material, which has the characteristics of low-temperature curing, fast curing, and strong ultraviolet resistance. In the present application, organic bentonite is used as a sedimentation inhibitor to prevent the sedimentation of pigment filler and glass beads. Fumed silica provides thixotropic properties to improve the construction performance of the marking paint. The pigment filler provides whiteness and reduces the cost of the paint. The accelerator plays a promoting role in the curing of the marking paint, shortens the curing reaction time of the marking material, and reduces the opportunity of sticking dirt when not cured.

[0038] In some embodiments of the present application, the accelerator is at least one of dimethyl-p-toluidine, dihydroxypropyl-p-toluidine, and dihydroxyethyl-p-toluidine.

[0039] In some embodiments of the present application, the pigment filler is a combination of titanium dioxide and quartz sand.

[0040] The mass ratio of the titanium dioxide to the quartz sand is 1:2.3-4.2.

[0041] In some embodiments of the present application, the titanium dioxide is rutile titanium dioxide.

[0042] In some embodiments of the present application, the rutile titanium dioxide has a mesh size of 300-400 mesh.

[0043] In some embodiments of the present application, the quartz sand has a mesh size of 300-400 mesh.

[0044] In some embodiments of the present application, the organic bentonite has a mesh size of 500-800 mesh.

[0045] In some embodiments of the present application, the B component comprises the following raw materials by weight: 20-35 parts of butyl acrylate, 21-28 parts of glass beads, 2-6 parts of dibenzoyl peroxide, and 0.1-0.3 parts of leveling agent.

[0046] In the present application, butyl acrylate in the B component also serves as a monomer for curing and film formation. Dibenzoyl peroxide serves as an initiator for the curing of the anti-fouling marking paint. The leveling agent allows the paint to quickly level after application, and also has the effect of reducing surface energy. Glass beads are added to the marking paint as a reflective material for the marking paint, which can better improve the reflectivity of the road marking paint.

[0047] In some embodiments of the present application, the glass microbead has a particle size of 0.5mm to 0.8mm.

[0048] In some embodiments of the present application, the leveling agent is a siloxane leveling agent.

[0049] The second aspect of the present application provides a method for preparing an anti-fouling marking paint, comprising the following steps: mixing A component and B component;

[0050] The mass ratio of the A component and the B component is 1:1 to 3.

[0051] In some embodiments of the present application, the method for preparing an anti-fouling marking paint comprises the following steps:

[0052] Preparation of A component: methyl methacrylate, active resin, pigment and filler, organic bentonite and fumed silica are mixed and stirred, sanding and dispersion, then a promoter is added and mixed to obtain the A component;

[0053] Preparation of B component: butyl acrylate, dibenzoyl peroxide, leveling agent and glass microbead are sequentially mixed to obtain the B component;

[0054] Mixing the A component and the B component to obtain the anti-fouling marking paint.

[0055] In the present application, by adjusting the weight parts of the raw materials for preparing the A component and the B component, the marking paint has the characteristics of anti-fouling, and by controlling the mass ratio of the A component and the B component, the marking paint is more completely cured, and the best anti-fouling performance is achieved.

[0056] The third aspect of the present application provides an application of the anti-fouling marking paint in preparing road marking lines.

[0057] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects:

[0058] In the present application, by controlling the raw materials for preparing the active resin, the active resin containing a large number of siloxane bonds and fluorine-containing groups is prepared, which has the characteristics of low surface tension. The active resin containing fluorine and silicon is used with the main resin, the surface energy of the marking paint is reduced, and the anti-fouling marking paint is obtained. The paint has excellent anti-fouling performance and long-term anti-fouling ability. DETAILED DESCRIPTION

[0059] The concept and the technical effects of the present application will be described clearly and completely in combination with the embodiments, so as to fully understand the objects, features and effects of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0060] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The specific conditions not mentioned in the embodiments are carried out according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments not mentioned by the manufacturer are all conventional products that can be obtained by market purchase.

[0062] The specific embodiments of the present application are described in detail below.

[0063] The water contact angle test uses a contact angle meter.

[0064] The dirt resistance grade is tested by reference to 5.5 immersion method in GB / T 9780-2013 Test methods of dirt pick-up resistance of coatings on buildings.

[0065] The smaller the dirt resistance grade number is, the better the anti-pollution performance of the coating is. The evaluation grade is referred to Table 2.

[0066] The long-term dirt resistance performance test is to test the dirt resistance grade of the marking paint by artificial accelerated aging using type II UV lamp irradiation for 150 h.

[0067] The artificial accelerated aging is referred to GB / T 23987-2009 Artificial weathering exposure of coatings - exposure to fluorescent UV and water.

[0068] The glass microbead particle size in the present embodiment or comparative example is 0.6 mm.

[0069] The mesh number of the organic bentonite in the present embodiment or comparative example is 600 mesh.

[0070] The mesh number of the rutile titanium dioxide in the present embodiment or comparative example is 325 mesh.

[0071] The mesh number of the quartz sand in the present embodiment or comparative example is 325 mesh.

[0072] The leveling agent used in the examples or comparative examples is BYK-307.

[0073] The fumed silica used in the examples or comparative examples is HL-200.

[0074] The specific examples of the present application are described in detail below.

[0075] Example 1

[0076] The present application is an anti-fouling marking paint, which is composed of component A and component B, the component A includes active resin;

[0077] The structural formula of the active resin is:

[0078]

[0079] The component A is prepared from the following raw materials by weight parts: methyl methacrylate 60 parts, active resin 5 parts, pigment and filler 30 parts, organic bentonite 1 part, fumed silica 0.2 part, accelerator 5 parts;

[0080] The component B is prepared from the following raw materials by weight parts: butyl acrylate 35 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, leveling agent 0.2 part.

[0081] The accelerator used in the example is dimethyl-p-toluidine.

[0082] The pigment and filler used in the example is a combination of rutile titanium dioxide and quartz sand.

[0083] The mass ratio of rutile titanium dioxide and quartz sand used in the example is 1:3.

[0084] The preparation method of the anti-fouling marking paint used in the example is composed of the following steps:

[0085] Preparation of the active resin:

[0086] Under the condition of 500 r / min, the hydroxy acrylate is added dropwise to the mixed solution of chloro-capped dimethyl polysiloxane with a molecular weight of 2000 and tetrahydrofuran, the dropping speed is 1.5 ml / min, after the dropping is completed, the reaction is carried out for 2.5 h, the temperature is controlled at 45℃, and the tetrahydrofuran is removed by rotary evaporation to obtain the silicone active body;

[0087] The silicone active body is mixed with perfluoropolyether carboxylic acid with a molecular weight of 1500, the temperature is controlled at 110℃, the reaction is carried out after incubation, the acid value is tested, when the acid value is 10 mgKOH / g, the temperature is lowered to discharge, and the active resin is obtained;

[0088] Preparation of A component: methyl methacrylate, active resin, pigment and filler, organic bentonite and fumed silica were mixed and stirred, sand mill dispersed, then accelerator was added, mixed to obtain A component;

[0089] Preparation of B component: butyl acrylate, dibenzoyl peroxide, leveling agent and glass microbeads were mixed in sequence to obtain B component;

[0090] A component and B component were mixed in a mass ratio of 1:1 to obtain the anti-fouling marking paint.

[0091] The mass ratio of chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid and perfluoropolyether carboxylic acid in this embodiment is 8:1:3.

[0092] The mass ratio of hydroxyacrylic acid and tetrahydrofuran in this embodiment is 1:45.

[0093] Example 2

[0094] The anti-fouling marking paint of the application is composed of A component and B component, A component includes active resin;

[0095] The structural formula of the active resin is:

[0096]

[0097] A component is prepared from the following raw materials by weight parts: methyl methacrylate 60 parts, active resin 5 parts, pigment and filler 30 parts, organic bentonite 1 part, fumed silica 0.2 parts, accelerator 5 parts;

[0098] B component is prepared from the following raw materials by weight parts: butyl acrylate 35 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, leveling agent 0.2 parts.

[0099] The accelerator in this embodiment is dihydroxyethyl p-toluidine.

[0100] The pigment and filler in this embodiment is a combination of rutile titanium dioxide and quartz sand.

[0101] The mass ratio of rutile titanium dioxide and quartz sand in this embodiment is 1:2.5.

[0102] The preparation method of the anti-fouling marking paint in this embodiment consists of the following steps:

[0103] Preparation of active resin:

[0104] Under the condition of 500 r / min, hydroxyacrylic acid was added dropwise into the mixed solution of chloro-terminated dimethyl polysiloxane with a molecular weight of 2000 and tetrahydrofuran, the dropping speed was 1.5 ml / min, after the dropping was completed, the reaction was carried out for 2.5 h, and tetrahydrofuran was removed by rotary evaporation to obtain silicone active body;

[0105] The silicone active body is mixed with the perfluoropolyether carboxylic acid with a molecular weight of 1500, the temperature is controlled at 110°C, the reaction is kept for a certain time, the acid value is tested, when the acid value is 10 mgKOH / g, the temperature is lowered to discharge, and the active resin is obtained;

[0106] Preparation of A component: methyl methacrylate, active resin, pigment and filler, organic bentonite and fumed silica are mixed and stirred, sand mill dispersion is carried out, then a promoter is added, mixed, and A component is obtained;

[0107] Preparation of B component: butyl acrylate, dibenzoyl peroxide, leveling agent and glass microbeads are sequentially mixed, and B component is obtained;

[0108] A component and B component are mixed in a mass ratio of 1:1 to obtain the anti-fouling marking paint.

[0109] In this embodiment, the mass ratio of the chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid and perfluoropolyether carboxylic acid is 8:1:3.

[0110] In this embodiment, the mass ratio of hydroxyacrylic acid and tetrahydrofuran is 1:45.

[0111] Example 3

[0112] The anti-fouling marking paint of the application is composed of A component and B component, and both A component and B component include active resin.

[0113] The structural formula of the active resin is:

[0114]

[0115] A component is prepared from the following raw materials by weight parts: methyl methacrylate 60 parts, active resin 5 parts, pigment and filler 45 parts, organic bentonite 1 part, fumed silica 0.2 part, and promoter 5 parts.

[0116] B component is prepared from the following raw materials by weight parts: butyl acrylate 20 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, and leveling agent 0.2 part.

[0117] In this embodiment, the promoter is dimethyl-p-toluidine.

[0118] In this embodiment, the pigment and filler is a combination of rutile titanium dioxide and quartz sand.

[0119] In this embodiment, the mass ratio of rutile titanium dioxide and quartz sand is 1:3.

[0120] The preparation method of the anti-fouling marking paint in this embodiment consists of the following steps:

[0121] Preparation of active resin:

[0122] In the state of 500r / min, hydroxy acrylic acid is added dropwise to the mixture of chloro-terminated dimethyl polysiloxane with a molecular weight of 2000 and tetrahydrofuran, the dropwise speed is 1.5ml / min, after the dropwise addition is completed, the reaction is carried out for 2.5h, and tetrahydrofuran is removed by rotary evaporation to obtain a silicone active body;

[0123] The silicone active body is mixed with perfluoropolyether carboxylic acid with a molecular weight of 1500, the temperature is controlled to be 110℃, the reaction is carried out after heat preservation, and the acid value is tested; when the acid value is 10mgKOH / g, the product is discharged after cooling, and an active resin is obtained;

[0124] Preparation of A component: methyl methacrylate, active resin, pigment and filler, organic bentonite and fumed silica are mixed and stirred, sand mill dispersion is carried out, a promoter is added, and mixing is carried out to obtain A component;

[0125] Preparation of B component: active resin, dibenzoyl peroxide, leveling agent and glass microbeads are sequentially mixed to obtain B component;

[0126] A component and B component are mixed in a mass ratio of 1:2 to obtain the anti-fouling marking paint.

[0127] In the embodiment, the mass ratio of chloro-terminated dimethyl polysiloxane, hydroxy acrylic acid and perfluoropolyether carboxylic acid is 8:1:3.

[0128] In the embodiment, the mass ratio of hydroxy acrylic acid and tetrahydrofuran is 1:45.

[0129] Comparative Example 1

[0130] The present application is a marking paint, which is composed of A component and B component.

[0131] A component is prepared from the following raw materials in parts by weight: methyl methacrylate 65 parts, pigment and filler 30 parts, organic bentonite 1 part, fumed silica 0.2 part, and promoter 5 parts.

[0132] B component is prepared from the following raw materials in parts by weight: butyl acrylate 35 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, and leveling agent 0.2 part.

[0133] In the comparative example, the promoter is dimethyl-p-toluidine.

[0134] In the comparative example, the pigment and filler are a combination of rutile titanium dioxide and quartz sand.

[0135] In the comparative example, the mass ratio of rutile titanium dioxide and quartz sand is 1:3.

[0136] In the comparative example, the preparation method of the anti-fouling marking paint comprises the following steps:

[0137] Preparation of A component: methyl methacrylate, pigment and filler, organic bentonite and fumed silica were mixed and stirred, sand mill dispersed, then accelerator was added, mixed to obtain A component;

[0138] Preparation of B component: butyl acrylate, dibenzoyl peroxide, leveling agent and glass microbeads were sequentially mixed to obtain B component;

[0139] A component and B component were mixed in a mass ratio of 1:1 to obtain the marking paint.

[0140] Comparative Example 2

[0141] The present application is a kind of anti-fouling marking paint, which is composed of A component and B component, A component includes active resin;

[0142] The structural formula of the active resin is:

[0143]

[0144] A component is prepared from the following raw materials by weight parts: methyl methacrylate 60 parts, active resin 2 parts, pigment and filler 30 parts, organic bentonite 1 part, fumed silica 0.2 parts, accelerator 5 parts;

[0145] B component is prepared from the following raw materials by weight parts: butyl acrylate 35 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, leveling agent 0.2 parts.

[0146] The accelerator in this comparative example is dimethyl p-toluidine.

[0147] The pigment and filler in this comparative example is a combination of rutile titanium dioxide and quartz sand.

[0148] The mass ratio of rutile titanium dioxide and quartz sand in this comparative example is 1:3.

[0149] The preparation method of the anti-fouling marking paint in this comparative example consists of the following steps:

[0150] Preparation of active resin:

[0151] Under the condition of 500 r / min, hydroxyacrylic acid was added dropwise to the mixed solution of chloro-terminated dimethyl polysiloxane with a molecular weight of 2000 and tetrahydrofuran, the dropwise speed was 1.5 ml / min, after the dropwise addition was completed, the reaction was carried out for 2.5 h, and the tetrahydrofuran was removed by rotary evaporation to obtain the silicone active body;

[0152] The silicone active body was mixed with perfluoropolyether carboxylic acid with a molecular weight of 1500, the temperature was controlled at 110℃, and the reaction was carried out after incubation, the acid value was tested, when the acid value was 10 mgKOH / g, the temperature was lowered to discharge, and the active resin was obtained;

[0153] Preparation of A component: methyl methacrylate, active resin, pigment and filler, organic bentonite and fumed silica were mixed and stirred, sand mill dispersed, then promoter was added and mixed to obtain A component;

[0154] Preparation of B component: butyl acrylate, dibenzoyl peroxide, leveling agent and glass microbeads were sequentially mixed to obtain B component;

[0155] The A component and the B component were mixed in a mass ratio of 1:1 to obtain the anti-fouling marking paint.

[0156] The mass ratio of the chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid and perfluoropolyether carboxylic acid in this embodiment is 8:1:3.

[0157] The mass ratio of the hydroxyacrylic acid and tetrahydrofuran in this embodiment is 1:45.

[0158] Comparative Example 3

[0159] The anti-fouling marking paint of the present application is composed of A component and B component.

[0160] The A component is prepared from the following raw materials in parts by weight: methyl methacrylate 65 parts, pigment and filler 30 parts, organic bentonite 1 part, fumed silica 0.2 part, promoter 5 parts, and 3-mercaptopropyl trimethoxysilane 2 parts.

[0161] The B component is prepared from the following raw materials in parts by weight: butyl acrylate 35 parts, glass microbeads 25 parts, dibenzoyl peroxide 6 parts, leveling agent 0.2 part, and perfluoropolyether carboxylic acid 2 parts.

[0162] The promoter in this comparative example is dimethyl-p-toluidine.

[0163] The pigment and filler in this comparative example is a combination of rutile titanium dioxide and quartz sand.

[0164] The mass ratio of the rutile titanium dioxide and quartz sand in this comparative example is 1:3.

[0165] The preparation method of the anti-fouling marking paint in this comparative example consists of the following steps:

[0166] Preparation of A component: methyl methacrylate, pigment and filler, organic bentonite and fumed silica were mixed and stirred, sand mill dispersed, then promoter and 3-mercaptopropyl trimethoxysilane were added and mixed to obtain A component;

[0167] Preparation of B component: butyl acrylate, dibenzoyl peroxide, perfluoropolyether carboxylic acid, leveling agent and glass microbeads were sequentially mixed to obtain B component;

[0168] The A component and the B component were mixed in a mass ratio of 1:1 to obtain the marking paint.

[0169] The reticle paints obtained from the implementation 1-3 and the comparative example 1-3 were tested for performance, and the results are shown in Table 1.

[0170] Table 1 Performance test results of the two-component reticle paints obtained from the implementation 1-3 and the comparative example 1-3

[0171]

[0172]

[0173] Table 2 Stain resistance rating

[0174] stain resistance rating degree of staining 0 no staining 1 very slight 2 slight 3 moderate 4 severe

[0175] As can be seen from Table 1, the water contact angle of the reticle paint is significantly larger after the addition of the active resin provided by the present application, and the minimum value of the stain resistance rating is obtained. At the same time, by controlling the weight parts of the raw materials in the reticle paint, the anti-stain reticle paint can achieve the best anti-stain performance.

[0176] As can be seen from Table 1, although the addition of the silicon and fluorine additives directly in the reticle paint can achieve a 1-level stain resistance rating, the long-term stain resistance performance is poor, and the stain resistance performance becomes worse after aging.

[0177] In summary, the present application prepares an active resin containing a large number of silicon-oxygen bonds and fluorine-containing groups, which has the characteristics of low surface tension. By mixing and modifying with the main resin in the reticle paint, the surface energy of the reticle paint is reduced, and the obtained anti-stain reticle paint has excellent stain resistance performance and long-term stain resistance ability.

[0178] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only for specific embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An anti-fouling marking paint comprising a component A and a component B, characterized in that, The raw material for preparing the A component includes an active resin; The active resin has the following structural formula: The value range of n is 5-20, and the value range of m is 10-40. The active resin includes the following raw materials: chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid, and perfluoropolyether carboxylic acid. The B component includes the following raw materials by weight parts: butyl acrylate 20-35 parts, glass microbeads 21-28 parts, dibenzoyl peroxide 2-6 parts, and leveling agent 0.1-0.3 parts.

2. The anti-fouling marking paint according to claim 1, characterized in that, The mass ratio of the chloro-terminated dimethyl polysiloxane, hydroxyacrylic acid, and perfluoropolyether carboxylic acid is 5.1-8.6:1:2.2-4.

0.

3. The anti-fouling marking paint according to claim 1, characterized in that, The A component includes the following raw materials by weight parts: methyl methacrylate 45-65 parts, active resin 5-10 parts, pigment and filler 30-45 parts, organic bentonite 0.5-2 parts, fumed silica 0.2-0.5 parts, and accelerator 2-6 parts.

4. The anti-fouling marking paint according to claim 3, characterized in that, The accelerator is at least one of dimethyl-p-toluidine, dihydroxypropyl-p-toluidine, and dihydroxyethyl-p-toluidine.

5. The anti-fouling marking paint according to claim 3, characterized in that, The pigment and filler are a combination of titanium white and quartz sand. The mass of the titanium white and quartz sand is 1:2.3-4.

2.

6. The anti-fouling marking paint according to claim 1, wherein The leveling agent is a siloxane leveling agent.

7. The method of preparing a stain-resistant marking paint according to any one of claims 1 to 6, wherein The A component and the B component are mixed. The mass ratio of the A component and the B component is 1:1-3.

8. Use of the anti-fouling marking paint according to any one of claims 1-6 in the preparation of road marking lines.

Images