Ultra-fast-drying water-based colored thick coating marking line and manufacturing method thereof

Abstract

The invention relates to the field of road traffic marking lines, and particularly discloses an ultra-fast-drying water-based colored thick-coating marking line and a manufacturing method thereof. The marking line is prepared from the following raw materials in parts by weight: 28 to 32 parts of polyacrylic resin emulsion, 0.1 to 0.2 part of conditioning agent, 0.2 to 0.3 part of dispersing agent, 0.1 to 0.2 part of defoaming agent, 15 to 25 parts of titanium dioxide, 15 to 25 parts of silica powder, 2 to 5 parts of wax emulsion, 0.1 to 0.2 part of thickening agent, 1 to 3 parts of aziridine, 15 to 25 parts of glass bead and 0.2 to 0.3 part of macromolecular water-absorbent resin. The drying time of the ultra-fast-drying water-based colored thick-coating marking line is 10-15 minutes, compared with the existing time of 1-2 hours, the drying time of the marking line is greatly shortened, the purpose of quickly opening traffic is achieved, the ultra-fast-drying water-based colored thick-coating marking line has good water resistance, wear resistance and alkali resistance, and the application range of the water-based paint marking line is greatly widened.

Description

Technical Field

[0001] The present application relates to the field of road traffic markings, and more specifically, to an ultra-fast-drying water-based color thick coating marking and a manufacturing method thereof. Background Art

[0002] Road traffic markings refer to the signs on the road surface that use lines, arrows, text, facade markings, raised road signs and contour signs to convey traffic information such as guidance, restriction, and warnings to traffic participants. Their main function is to guide vehicles to drive safely on the road. They are one of the most basic traffic safety facilities and can effectively reduce traffic accidents and traffic jams.

[0003] There are three main types of coatings for road traffic marking construction in China: hot melt coatings, two-component marking coatings and water-based coatings. Among them, hot melt coatings have become the mainstream construction method because the thickness of the one-time molding can reach 2-3mm, accounting for 90% of the market. However, hot melt coatings have great defects. First, before construction, the original markings need to be completely removed, which not only increases the construction cost, but also reduces the construction efficiency. At the same time, when removing the old markings, there is also the problem of environmental pollution; secondly, the temperature of hot melt coatings needs to be heated to 180-220℃ during construction, and a large amount of heat energy is consumed in the process, which does not meet the requirements of low-carbon development; finally, during the use of hot melt coatings after the construction is completed, a large number of cracks begin to appear on the asphalt-based pavement after about half a year, and the cement-based pavement falls off as a whole after half a year, so the hot melt markings must be upgraded. The disadvantage of two-component marking coatings is that they have a strong pungent smell, which will cause great harm to construction personnel and do not meet the requirements of green road development.

[0004] Water-based paint is non-toxic and non-flammable. It uses water as a diluent and can be applied at room temperature. It is an energy-saving, pollution-free, green and environmentally friendly paint. It does not need to remove the old markings during construction and can be directly sprayed on the surface of the old markings, which further reduces the construction cost and does not cause pollution. The existing water-based thick paste road marking paint has a one-time film thickness of 1-1.5mm and good adhesion of glass beads, but it has the defect of slow drying speed. The time to open traffic is generally 1-2 hours, which seriously affects the smooth passage of traffic, especially in the high humidity environment in the south, and in the north after entering autumn and winter when the surface temperature is only 5-10℃, the drying property of water-based thick paste road marking paint is greatly reduced, which seriously restricts the scope of use of this paint. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides an ultra-fast drying water-based color thick coating marking and a method for making the same.

[0006] In the first aspect, the present application provides an ultra-fast drying water-based color thick coating road marking, which adopts the following technical solution: A super-fast-drying water-based color thick coating road marking, the raw materials used include the following components in parts by weight: 28-32 parts of polyacrylic acid resin emulsion; Regulator 0.1-0.2 parts; Dispersant 0.2-0.3 parts; Defoaming agent 0.1-0.2 parts; 15-25 parts of titanium dioxide; 15-25 parts of silicon micropowder; 2-5 parts wax emulsion; Thickener 0.1-0.2 parts; 1-3 parts of aziridine; Glass beads 15-25 parts; 0.2-0.3 parts of polymer water-absorbing resin.

[0007] Preferably, the particle size of the polymer water-absorbing resin is 30-80 mesh, and the water absorption rate is ≥1000 times.

[0008] Through the above technical scheme, the present application makes full use of the characteristics of polymer water-absorbent resin (SAP) that it can absorb hundreds to thousands of times of its own weight of water and absorb very quickly, so that it can quickly absorb the water in the water-based paint (with polyacrylic acid resin emulsion as base material, and mixed with regulator, dispersant, defoamer, titanium dioxide, silicon micropowder, wax emulsion, thickener, aziridine) when in contact with the water-based paint, and aziridine slowly undergoes cross-linking reaction during contact with the polymer water-absorbent resin, and finally forms a cross-linked type, so that the water in the polymer water-absorbent resin is locked, thereby achieving a water-resistant effect. In addition, when the polymer water-absorbent resin rapidly absorbs the water in the water-based paint, the film-forming material in the water-based paint can achieve rapid demulsification due to the loss of water, thereby quickly building strength, and finally achieving the purpose of rapid drying and opening traffic.

[0009] Experiments have shown that the ultra-fast drying water-based color thick paint road marking with a thickness of 1.5mm in this application can shorten the drying time from the original 1-2 hours to 10-15 minutes, achieving the effect of quickly opening up traffic and greatly expanding the application scope of water-based paint road markings.

[0010] Preferably, the glass microbeads are high-brightness reflective glass microbeads, and the particle size range is 20-40 mesh.

[0011] Through the above technical solution, the high-brightness reflective glass beads of the present application can make the marking have a lasting reflective effect, improve the visibility of the marking at night, and at the same time make the marking have good reflectivity on rainy nights.

[0012] Preferably, the regulator is a hydroxyl-terminated hyperbranched polyester having a molar mass of 800-2600 g / mol and a hydroxyl value of 500-700 mgKOH / g.

[0013] Through the above technical solution, the regulator of the present application can improve the rheological properties of the water-based paint, reduce the viscosity of the water-based paint, obtain a water-based paint with a higher solid content, and accelerate the drying speed of the marking line.

[0014] Preferably, the dispersant is one or more of sodium dioctyl sulfosuccinate, sodium dodecyl polyoxyethylene ether sulfate, sodium dodecyl sulfonate, sodium hexadecyl sulfonate and sodium dodecylbenzene sulfonate.

[0015] Preferably, the defoaming agent is one or more of BYK-012, BYK-014, BYK-018, BYK-019 and BYK-022.

[0016] Preferably, the thickener is one or more of polyvinyl alcohol, carboxymethyl cellulose and carboxyethyl cellulose.

[0017] In the second aspect, the present application provides a method for making an ultra-fast-drying water-based thick color coating road marking, which adopts the following technical solution: A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings The polyacrylic acid resin emulsion, the regulator, the dispersant, the titanium dioxide, the silicon powder, the wax emulsion, the thickener and the aziridine are stirred and mixed, and then a defoamer is added thereto, and the stirring and mixing are continued to obtain a water-based coating; S2. Production of marking lines The polymer water-absorbing resin, water-based paint and glass beads are sprayed on the surface of the asphalt substrate in sequence to obtain a marking line with a thickness of 1.0-1.5mm.

[0018] Through the above technical scheme, when making the road marking, the present application first uses a particle sprayer to spray the polymer water-absorbing resin on the surface of the asphalt substrate, and then after an interval of 3-5 minutes, a Graco two-component road marking sprayer is used to spray the water-based paint and glass beads. The water-based paint and glass beads are added to the two-component road marking sprayer at the same time. When spraying, the sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while walking, and then the glass beads are immediately sprayed on the surface of the water-based paint, so that the glass beads can be well embedded in the water-based paint, so that the water-based paint and the glass beads are formed as one piece. The walking speed is controlled to 5km / h during spraying. After the spraying is completed, the safety cones can be evacuated after 10-15 minutes to open traffic.

[0019] Preferably, the viscosity of the water-based coating is 100-120 KU.

[0020] Through the above technical solution, the present application further controls the viscosity of the water-based paint, so that the marking line can have a faster drying speed and the glass beads can be more easily embedded in the water-based paint, thereby improving the durable reflective effect of the marking line.

[0021] In summary, this application has the following beneficial technical effects: 1. The ultra-fast drying water-based color thick paint road marking of this application has a drying time of 10-15 minutes, which greatly shortens the drying time of the road marking compared with the existing 1-2 hours, achieves the purpose of rapid opening of traffic, and greatly broadens the scope of use of water-based paint road markings; 2. The glass beads of the present application can be well embedded in the water-based paint and formed into one piece with the water-based paint, so that the ultra-fast-drying water-based color thick paint road marking has good reflective ability and strong reflective durability; 3. The ultra-fast drying water-based color thick coating road marking of this application has good water resistance, wear resistance and alkali resistance, and has good performance in various uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a surface effect diagram of the asphalt substrate after the surface is cleaned in step S21 of the embodiment of the present application; Figure 2 is a schematic diagram of spraying a polymer water-absorbing resin in step S22 of an embodiment of the present application; Figure 3 It is a schematic diagram of spraying water-based paint and high-brightness reflective glass beads in step 23 of the embodiment of the present application. DETAILED DESCRIPTION

[0023] In a specific embodiment of the present application, since there is no significant difference in the effect of using one or more of diethylhexyl sulfosuccinate, sodium dodecyl polyoxyethylene ether sulfate, sodium dodecyl sulfonate, sodium hexadecyl sulfonate and sodium dodecylbenzene sulfonate as dispersants, this application takes sodium dodecyl sulfonate as an example for illustration.

[0024] In the specific implementation of the present application, since there is no significant difference in the effect of using one or more of BYK-012, BYK-014, BYK-018, BYK-019 and BYK-022 as defoaming agents, the present application takes BYK-012 as an example for description.

[0025] In a specific embodiment of the present application, since there is no significant difference in the effect of using one or more of polyvinyl alcohol, carboxymethyl cellulose and carboxyethyl cellulose as thickeners, the present application takes carboxymethyl cellulose as an example for illustration.

[0026] The raw materials used in this application are all commercially available products, including: Polyacrylic acid resin emulsion, purchased from BASF, model 7551, pH value 6.5-8.5, viscosity 200-900 mPa·s (RVT, 23°C Sp2 / 20rpm); The hydroxyl-terminated hyperbranched polyester was purchased from Wuhan Hyperbranched Resin Technology Co., Ltd. The specific model and properties are shown in Table 1; Table 1. Properties of terminal hydroxyl hyperbranched polyesters model Molar mass (g / mol) Hydroxyl value (mgKOH / g) HyPer H101 700 800 HyPer H203 2600 500 HyPer H102 1100 600 Wax emulsion, purchased from Shanghai Joule Wax Co., Ltd., model s4512, composed of polyethylene wax emulsion, pH value 7-9; aziridine, purchased from Hubei Langbowan Biopharmaceutical Co., Ltd.; High-brightness reflective glass microbeads were purchased from Shijiazhuang Jucai Mineral Products Co., Ltd., with a particle size range of 20-40 mesh; The polymer water-absorbent resin was purchased from Zhengzhou Wandao New Material Technology Co., Ltd., with a particle size range of 30-80 mesh and a water absorption rate of ≥1000 times.

[0027] Example 1 A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings 28 kg of polyacrylic acid resin emulsion, 0.2 kg of terminal hydroxyl hyperbranched polyester HyPer H101, 0.2 kg of sodium dodecyl sulfate, 15 kg of titanium dioxide, 25 kg of silica powder, 2 kg of wax emulsion, 0.2 kg of carboxymethyl cellulose and 1 kg of aziridine were stirred and mixed, and then 0.2 kg of BYK-012 was added thereto, and stirring and mixing were continued to obtain an aqueous emulsion with a viscosity of 120 KU; S2. Production of marking lines S21. Clean the surface of the asphalt substrate in the coating area; S22, putting 0.2 kg of high molecular water-absorbing resin into a particle spraying machine, and then spraying a layer of high molecular water-absorbing resin evenly on the surface of the cleaned asphalt substrate; S23. Put the water-based paint prepared in step S1 and 25 kg of high-brightness reflective glass beads into a Graco two-component road marking sprayer. After 3 minutes of spraying the polymer water-absorbing resin, start spraying the water-based paint and the high-brightness reflective glass beads. During spraying, the travel speed is controlled to be 5 km / h. The sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while moving, and then the high-brightness reflective glass beads are immediately sprayed on the surface of the water-based paint, and finally a marking with a thickness of 1.0 mm is obtained.

[0028] Example 2 A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings 32 kg of polyacrylic acid resin emulsion, 0.1 kg of terminal hydroxyl hyperbranched polyester HyPer H203, 0.3 kg of sodium dodecyl sulfate, 25 kg of titanium dioxide, 15 kg of silica powder, 5 kg of wax emulsion, 0.1 kg of carboxymethyl cellulose and 3 kg of aziridine were stirred and mixed, and then 0.1 kg of BYK-012 was added thereto, and stirring and mixing were continued to obtain an aqueous emulsion with a viscosity of 100 KU; S2. Production of marking lines S21. Clean the surface of the asphalt substrate in the coating area; S22, putting 0.3 kg of high molecular water-absorbing resin into a particle spraying machine, and then spraying a layer of high molecular water-absorbing resin evenly on the surface of the cleaned asphalt substrate; S23. Put the water-based paint prepared in step S1 and 15 kg of high-brightness reflective glass beads into a Graco two-component road marking sprayer. 5 minutes after the polymer water-absorbing resin is sprayed, start spraying the water-based paint and high-brightness reflective glass beads. During spraying, the moving speed is controlled to be 5 km / h. The sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while moving, and then the high-brightness reflective glass beads are immediately sprayed on the surface of the water-based paint, and finally a marking with a thickness of 1.5 mm is obtained.

[0029] Example 3 A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings 30 kg of polyacrylic acid resin emulsion, 0.15 kg of terminal hydroxyl hyperbranched polyester HyPer H102, 0.25 kg of sodium dodecyl sulfate, 20 kg of titanium dioxide, 20 kg of silica powder, 3.5 kg of wax emulsion, 0.15 kg of carboxymethyl cellulose and 2 kg of aziridine were stirred and mixed, and then 0.15 kg of BYK-012 was added thereto, and stirring and mixing were continued to obtain an aqueous emulsion with a viscosity of 110 KU; S2. Production of marking lines S21. Clean the surface of the asphalt substrate in the coating area; S22, putting 0.25 kg of high molecular water-absorbing resin into a particle spraying machine, and then spraying a layer of high molecular water-absorbing resin evenly on the surface of the cleaned asphalt substrate; S23. Put the water-based paint prepared in step S1 and 20 kg of high-brightness reflective glass beads into a Graco two-component road marking sprayer. After 4 minutes of spraying the polymer water-absorbing resin, start spraying the water-based paint and high-brightness reflective glass beads. During spraying, control the travel speed to 5 km / h. The sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while moving, and then the high-brightness reflective glass beads are immediately sprayed on the surface of the water-based paint, and finally a marking with a thickness of 1.2 mm is obtained.

[0030] Example 4 A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings 29 kg of polyacrylic acid resin emulsion, 0.18 kg of terminal hydroxyl hyperbranched polyester HyPer H102, 0.22 kg of sodium dodecyl sulfate, 17 kg of titanium dioxide, 23 kg of silica powder, 3 kg of wax emulsion, 0.18 kg of carboxymethyl cellulose and 1.5 kg of aziridine were stirred and mixed, and then 0.18 kg of BYK-012 was added thereto, and stirring and mixing were continued to obtain an aqueous emulsion with a viscosity of 106 KU; S2. Production of marking lines S21. Clean the surface of the asphalt substrate in the coating area; S22, putting 0.22 kg of high molecular water-absorbing resin into a particle spraying machine, and then spraying a layer of high molecular water-absorbing resin evenly on the surface of the cleaned asphalt substrate; S23. Put the water-based paint prepared in step S1 and 23 kg of high-brightness reflective glass beads into a Graco two-component road marking sprayer. After 3 minutes of spraying the polymer water-absorbing resin, start spraying the water-based paint and high-brightness reflective glass beads. During spraying, control the travel speed to 5 km / h. The sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while moving, and then the high-brightness reflective glass beads are immediately sprayed on the surface of the water-based paint, and finally a marking with a thickness of 1.1 mm is obtained.

[0031] Example 5 A method for making an ultra-fast-drying water-based color thick coating road marking comprises the following steps: S1. Preparation of water-based coatings 31 kg of polyacrylic acid resin emulsion, 0.13 kg of terminal hydroxyl hyperbranched polyester HyPer H102, 0.28 kg of sodium dodecyl sulfate, 23 kg of titanium dioxide, 18 kg of silica powder, 4 kg of wax emulsion, 0.12 kg of carboxymethyl cellulose and 2.5 kg of aziridine were stirred and mixed, and then 0.12 kg of BYK-012 was added thereto, and stirring and mixing were continued to obtain an aqueous emulsion with a viscosity of 113 KU; S2. Production of marking lines S21. Clean the surface of the asphalt substrate in the coating area; S22, putting 0.28 kg of high molecular water-absorbing resin into a particle spraying machine, and then spraying a layer of high molecular water-absorbing resin evenly on the surface of the cleaned asphalt substrate; S23. Put the water-based paint prepared in step S1 and 17 kg of high-brightness reflective glass beads into a Graco two-component road marking sprayer. 5 minutes after the polymer water-absorbing resin is sprayed, start spraying the water-based paint and high-brightness reflective glass beads. During spraying, the moving speed is controlled to be 5 km / h. The sprayer first sprays the water-based paint on the surface of the polymer water-absorbing resin layer while moving, and then the high-brightness reflective glass beads are immediately sprayed on the surface of the water-based paint, and finally a marking with a thickness of 1.4 mm is obtained.

[0032] Comparative Example 1 The difference from Example 2 is that no aziridine is added to the water-based coating in step S1, and step S22 is removed. The rest is the same as Example 2.

[0033] Comparative Example 2 The difference from Example 2 is that no aziridine is added to the water-based coating in step S1, and the rest is the same as Example 2.

[0034] Comparative Example 3 The difference from Example 2 is that in step S22, the amount of the polymer water-absorbing resin is 0.1 kg, and the rest is the same as Example 2.

[0035] Comparative Example 4 The difference from Example 2 is that in step S22, the amount of the polymer water-absorbing resin is 0.5 kg, and the rest is the same as Example 2.

[0036] Comparative Example 5 The difference from Example 2 is that in step S23, Graco two-component road marking sprayer is not used, only ordinary water-based paint road marking sprayer is used, and high-brightness reflective glass beads are added to the water-based paint in step S1. The rest is the same as Example 2.

[0037] Performance Testing 1. The time when the markings of Examples 1-5 and Comparative Examples 1-5 were open to traffic under different conditions were recorded respectively. The specific conditions were: (1) temperature of 5-10°C and humidity of 40-50%; (2) temperature of 5-10°C and humidity of 70-80%; (3) simulating the high humidity environment in the south, with temperature of 15-20°C and humidity of 80-90%.

[0038] 2. With reference to JT / T 280-2004 "Road Marking Paint", the road performance of the markings of Examples 1-5 and Comparative Examples 1-5 was tested respectively. The results are shown in Table 2. The road performance mainly includes wear resistance, water resistance, alkali resistance, retroreflection coefficient on non-rainy nights and retroreflection coefficient during continuous rainfall. Among them, wear resistance: using a JM-100 rubber grinding wheel, the weight loss of the marking is tested at 200r / 1000g, and the weight loss is required to be ≤40mg; water resistance: soaking in water, measuring the time when the surface peels off, etc., and requiring no abnormal phenomenon after soaking in water for 24 hours; alkali resistance: soaking in a saturated calcium hydroxide solution, measuring the time when the surface peels off, etc., and requiring no abnormal phenomenon after soaking in water for 24 hours; retroreflection coefficient on non-rainy nights and retroreflection coefficient during continuous rainfall: the average total wheel rolling time is about 12 hours per day, and after 1 month, the retroreflection tester for markings is used for measurement, and the retroreflection coefficient on non-rainy nights should not be less than 150cd·1x -1 ·M -2 , the retroreflection coefficient during continuous rainfall should not be less than 75cd·1x -1 ·M -2 .

[0039] Table 2 Results of various road performances Data Analysis: As can be seen from Table 2, the weight loss of the markings of Examples 1-5 is in the range of 30.1-31.0 mg, the time for peeling and other phenomena to occur when immersed in water is 26.4-27.3 days, the time for peeling and other phenomena to occur when immersed in a saturated calcium hydroxide solution is 14.0-15.2 days, and the retroreflection coefficient on a non-rainy night after one month is 450.7-453.7 cd·1x -1 ·M -2 In continuous rainfall, the retroreflection coefficient is between 210.3-214.8cd·1x -1 ·M -2 It not only meets the requirements of various standard values, but some indicators are even significantly higher than the standard value requirements. Moreover, after actual testing, the markings of Examples 1-5 can be opened to traffic in 10 minutes at a temperature of 5-10°C and a humidity of 40-50%; in 15 minutes at a temperature of 5-10°C and a humidity of 70-80%; in 15 minutes at a temperature of 15-20°C and a humidity of 80-90%. The experimental data fully show that the markings of the present application have an extremely short drying time, which obviously achieves the purpose of quickly opening traffic, greatly broadens the scope of use of water-based paint markings, and the markings of the present application also have good water resistance, wear resistance, alkali resistance, reflectivity and long-lasting reflectivity.

[0040] The difference between Comparative Example 1 and Example 2 is that no polymer water-absorbing resin is used. As can be seen from Table 2, the weight loss of the marking line of Comparative Example 1 is 34.3 mg, the time for peeling and other phenomena to occur after immersion in water is 23.4 days, and the time for peeling and other phenomena to occur after immersion in a saturated solution of calcium hydroxide is 10.1 days. After one month, the retroreflection coefficient on a non-rainy night is 271.4 cd·1x -1 ·M -2 , the retroreflection coefficient is 155.4cd·1x during continuous rainfall -1 ·M -2 Although the experimental data show that the marking of Comparative Example 1 meets the standard requirements, in terms of drying time, Comparative Example 1 takes 1 hour to open to traffic at a temperature of 5-10°C and a humidity of 40-50%; it takes about 1.5 hours to open to traffic at a temperature of 5-10°C and a humidity of 70-80%; it takes 2 hours to open to traffic at a temperature of 15-20°C and a humidity of 80-90%. It can be seen that the present application can quickly absorb the moisture in the water-based paint by adopting a polymer water-absorbing resin, shortening the drying time from 1-2 hours to 10-15 minutes, achieving the purpose of quickly opening to traffic, and greatly broadening the scope of use of water-based paint markings.

[0041] The difference between Comparative Example 2 and Example 2 is that no aziridine is added to the water-based paint, and only a high molecular water-absorbing resin is used. It can be seen from Table 2 that the weight loss of the marking line of Comparative Example 2 is 38.8 mg, the time for peeling and other phenomena to occur when immersed in water is less than 1 day, and the time for peeling and other phenomena to occur when immersed in a saturated solution of calcium hydroxide is less than 1 day, which does not pass the standard requirements. After one month, the retroreflection coefficient on a non-rainy night is 250.1 cd·1x -1 ·M -2 , the retroreflection coefficient is 108.7cd·1x during continuous rainfall -1 ·M -2 . Experimental data show that when only high molecular water-absorbing resin is added, the wear resistance and reflective ability of the obtained marking are poor, and it does not have good water resistance and alkali resistance. The main reason for this phenomenon is that the high molecular water-absorbing resin does not have the ability to lock water by itself. If aziridine is not added, the high molecular water-absorbing resin is always in a state of circulating water absorption and release, and cannot form a cross-linked type to achieve the purpose of water resistance. In addition, due to the lack of cross-linking, other aspects of performance will also be affected to a certain extent.

[0042] The difference between Comparative Example 3 and Example 2 is that the amount of high molecular water-absorbing resin used is smaller. As can be seen from Table 2, the weight loss of the marking line of Comparative Example 3 is 36.2 mg, the time for peeling and other phenomena to occur after immersion in water is 21.5 days, and the time for peeling and other phenomena to occur after immersion in a saturated solution of calcium hydroxide is 9.5 days. After one month, the retroreflection coefficient on a non-rainy night is 261.2 cd·1x -1 ·M -2 , the retroreflection coefficient is 142.6cd·1x during continuous rainfall -1 ·M -2 The experimental data show that if the amount of polymer water-absorbing resin is small, it will not achieve a good rapid water absorption effect, thus affecting the strength of the film-forming material in the water-based paint, and further affecting the performance indicators of the marking line.

[0043] The difference between Comparative Example 4 and Example 2 is that the amount of high molecular water-absorbing resin used is larger. As can be seen from Table 2, the weight loss of the marking line of Comparative Example 4 is 38.4 mg, the time for peeling and other phenomena to occur when immersed in water is 20.1 days, and the time for peeling and other phenomena to occur when immersed in a saturated solution of calcium hydroxide is 8.0 days. After one month, the retroreflection coefficient on a non-rainy night is 255.3 cd·1x -1 ·M -2 , the retroreflection coefficient is 110.2cd·1x during continuous rainfall -1 ·M -2 The experimental data show that if the amount of polymer water-absorbing resin is large, aziridine cannot fully form cross-links with the polymer water-absorbing resin, and the polymer water-absorbing resin that has not formed cross-links will absorb and release water in a cycle, thereby affecting the water resistance and other properties of the marking.

[0044] The difference between Comparative Example 5 and Example 2 is that the high-brightness reflective glass microspheres are directly added to the water-based paint in a premixed form. As can be seen from Table 2, the weight loss of the marking line of Comparative Example 5 is 30.4 mg, the time for peeling and other phenomena to occur after immersion in water is 27.0 days, and the time for peeling and other phenomena to occur after immersion in a saturated solution of calcium hydroxide is 15.0 days. After one month, the retroreflection coefficient on a non-rainy night is 452.1 cd·1x -1 ·M -2 , the retroreflection coefficient is 212cd·1x during continuous rainfall -1 ·M -2 The experimental data show that there is no significant difference in performance results between the surface-spreading high-gloss reflective glass microbeads used in this application and the pre-mixing form used in Comparative Example 5. This shows that the high-gloss reflective glass microbeads of this application can be well embedded in the water-based paint and formed into one piece with the water-based paint, so that the ultra-fast-drying water-based color thick coating road marking has good reflective ability and strong reflective durability.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultra-fast drying water-based thick color coating road marking, characterized in that: The raw materials used include the following components in parts by weight: 28-32 parts of polyacrylic acid resin emulsion; Regulator 0.1-0.2 parts; Dispersant 0.2-0.3 parts; Defoaming agent 0.1-0.2 parts; 15-25 parts of titanium dioxide; 15-25 parts of silicon micropowder; 2-5 parts wax emulsion; Thickener 0.1-0.2 parts; 1-3 parts of aziridine; Glass beads 15-25 parts; 0.2-0.3 parts of polymer water-absorbing resin.

2. The ultra-fast drying water-based thick color paint road marking according to claim 1, characterized in that: The particle size of the polymer water-absorbing resin is 30-80 meshes, and the water absorption rate is ≥1000 times.

3. The ultra-fast drying water-based thick color paint road marking according to claim 1, characterized in that: The glass microbeads are high-brightness reflective glass microbeads, and the particle size range is 20-40 meshes.

4. The ultra-fast drying water-based thick color coating road marking according to claim 1, characterized in that: The regulator is a terminal hydroxyl hyperbranched polyester with a molar mass of 800-2600 g / mol and a hydroxyl value of 500-700 mgKOH / g.

5. The ultra-fast drying water-based thick color paint road marking according to claim 1, characterized in that: The dispersant is one or more of sodium dioctyl sulfosuccinate, sodium dodecyl polyoxyethylene ether sulfate, sodium dodecyl sulfonate, sodium hexadecyl sulfonate and sodium dodecylbenzene sulfonate.

6. The ultra-fast drying water-based thick color coating road marking according to claim 1, characterized in that: The defoaming agent is one or more of BYK-012, BYK-014, BYK-018, BYK-019 and BYK-022.

7. The ultra-fast drying water-based thick color paint road marking according to claim 1, characterized in that: The thickener is one or more of polyvinyl alcohol, carboxymethyl cellulose and carboxyethyl cellulose.

8. A method for making the ultra-fast-drying water-based thick color coating road marking according to claim 1, characterized in that: The following steps are involved: S1. Preparation of water-based coatings The polyacrylic acid resin emulsion, the regulator, the dispersant, the titanium dioxide, the silicon powder, the wax emulsion, the thickener and the aziridine are stirred and mixed, and then a defoamer is added thereto, and the stirring and mixing are continued to obtain a water-based coating; S2. Production of marking lines The polymer water-absorbing resin, water-based paint and glass beads are sprayed on the surface of the asphalt substrate in sequence to obtain a marking line with a thickness of 1.0-1.5mm.

9. The method for making a super-fast-drying water-based thick color paint road marking according to claim 8, characterized in that: The viscosity of the water-based paint is 100-120 KU.

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