CN112852376B - Environment-friendly colored anti-skid pavement capable of melting ice and preparation method thereof - Google Patents

Abstract

The invention relates to an environment-friendly colored anti-skid pavement capable of melting ice and a preparation method thereof, wherein the method comprises the following steps: firstly, repairing and cleaning a pavement; then spreading an environment-friendly colored antiskid pavement adhesive, and spreading colored ceramic particles on the adhesive; after the adhesive is solidified, spraying an environment-friendly colored anti-skid pavement surface layer protective agent, and spreading potassium acetate particles within 3-5min after spraying. The environment-friendly color anti-skid pavement adhesive is toughened and modified by polyurethane, has better matching property of elongation at break and shearing strength, and remarkably improves the crack resistance and fatigue resistance of the paved color anti-skid pavement. The use of the surface layer protective agent effectively improves the anti-stripping capability of the ceramic particles of the color anti-skid pavement and further improves the water loss resistance of the environment-friendly color anti-skid pavement. The potassium acetate particles can well sink into the transparent surface layer protective agent or partially inlay on the surface of the surface layer protective agent, and can play a role in melting ice and snow in ice and snow weather.

Description

A kind of environment-friendly colored non-slip pavement capable of melting ice and its preparation method

technical field

The invention belongs to the technical field of road surface maintenance, and in particular relates to an ice-melting environment-friendly colored non-slip road surface and a preparation method thereof.

Background technique

China's highways are distributed in the north and south of the river, with different road conditions, usage environments and needs. In the winter season in northern China, ice and snow weather is often encountered, causing many traffics to be paralyzed or semi-paralyzed, seriously restricting and affecting the lives of residents, and also causing many hidden dangers to driving safety.

Colored non-slip pavement can solve the problem of wet and slippery road surface caused by rainy and snowy weather to a certain extent. However, when the amount of snow is heavy, snow deposits in the gaps of the colored non-slip pavement and fills the structural depth of ceramic particles. The road surface has just lost the function of anti-skid and improving safety performance. In order to solve the above problems, it is necessary to upgrade and transform the existing colored pavement technology so that it has anti-skid road surface, functional indication, and beautification of the environment. The ability to melt snow and ice improves the performance of colored non-slip pavement in ice and snow weather. Therefore, it is of great significance to study an environmentally friendly colored anti-skid pavement that is energy-saving, environmentally friendly, has good wear resistance, and has the effect of melting snow and ice.

Contents of the invention

In order to effectively overcome the problem of cracking of the colored anti-skid pavement caused by the large shrinkage rate and insufficient elongation at break of the current water-based epoxy resin, as well as the problem of insufficient wear performance of the colored anti-skid pavement due to serious grain loss in the early stage, at the same time, the snow melting of the snow melting agent is integrated. The ice effect further improves the service ability of the colored pavement in ice and snow weather. The invention develops an ice-melting environment-friendly colored non-slip pavement and a preparation method thereof.

The preparation method of the described deicing-melting environment-friendly colored non-slip pavement is as follows:

1) Clean and sweep the construction road surface. The construction ground needs to be clean, free of oil, powder, clear water, and floating ash; repair the damaged parts of the base surface with epoxy mortar, and the concrete surface must be clean and dry. solid;

2) Mix 100 parts by mass of component A of environmental-friendly colored non-slip road adhesive, 150 parts by mass of component B of environmentally-friendly colored non-slip road adhesive, 100 parts by mass of tap water and 10 parts by mass of pigment, and stir for 3-5 minutes at a speed of 1000-1500 rpm Finally, pour it on the construction road surface, and spread the colored ceramic particles with a particle size of 1-3mm until the colored ceramic particles completely cover the environmentally friendly colored non-slip road adhesive; after curing for more than 24 hours, use a broom to fully bond the surface Clean the colored ceramic particles and clean them with road cleaning tools;

3) According to the mass ratio of 1.2-1.5:2, mix the environmental protection color anti-skid pavement surface layer protective agent A component and the environmental protection color anti-skid pavement surface layer protective agent B component evenly, spray on the road surface; 3-5min after spraying In the interior, potassium acetate solid particles with a particle size of 0.5mm are evenly sprinkled by manual spreading or distribution sieves, and the spreading amount is 0.3-0.5kg/m ² . After hard drying, an environmentally friendly colored anti-skid road surface that can melt ice can be obtained.

The preparation method of described environment-friendly color non-slip pavement adhesive A component is:

1) Dry castor oil, polyethylene glycol 2000, dimethyl carbonate, and 4,4'-dicyclohexylmethane diisocyanate in a vacuum oven at 40°C to remove moisture, and then place them in a CaCl ₂ desiccator medium, placed at 25°C for 72h;

2) Dissolve the mixture of 10 molar parts of castor oil and 10 molar parts of polyethylene glycol 2000 into 30 molar parts of dimethyl carbonate, stir evenly at 45° C. until completely dissolved, and then under N ₂ Under protection, raise the temperature to 70°C, 3000rpm mechanical stirring for 3h, and set a 5°C condensation recovery device at the _N2 outlet to collect the evaporated dimethyl carbonate;

3) Weigh 20 parts of 4,4'-dicyclohexylmethane diisocyanate in molar weight and slowly add it dropwise to the reaction mixture in step 2). After the dropwise addition, keep the reaction conditions unchanged and continue the reaction for 3 hours to obtain the reaction product ①;

4) Weighing 15 parts of hydrogenated bisphenol A type epoxy resin or diglycidyl hexahydrophthalate is placed in the reactor, under nitrogen protection, the reaction temperature is 70 ℃, and the stirring speed is 1500rpm Add boron trifluoride ether under the conditions, the amount of boron trifluoride ether added is 0.5wt% of hydrogenated bisphenol A type epoxy resin or hexahydrophthalate diglycidyl ester, after stirring evenly, slowly add the reaction product ①, the dropping time is 3 hours, after the dropping is completed, continue to stir and react for 2 hours to obtain the reaction product ②;

5) Heat the reaction product ② to 80°C, stop the flow of N ₂ , connect a vacuum pump to the 5°C condensation recovery device at the N ₂ outlet, and vacuumize at a constant temperature and speed at a stirring speed of 3000rpm until no bubbles are generated A light yellow transparent mucus substance was obtained as the reaction product ③;

6) Add bisphenol A epoxy resin E51 with a molar mass of 85 parts to the reaction product ③, adjust the reaction temperature to 60°C, adjust the stirring speed to 3000rpm, remove the vacuum device, let the entire reaction equipment communicate with the atmosphere, and then slowly Add deionized water dropwise for 30min-2h. After the dropwise addition, keep the temperature and stirring speed and continue to react for 30min to obtain a modified epoxy resin emulsion with a solid content of 50wt%.

7) Add a stabilizer and a leveling agent with a mass fraction of 0.5% to the modified epoxy resin emulsion obtained in step 6), and continue to stir for 15 minutes to present a homogeneous milky white emulsion, which is the environmentally friendly colored non-slip road adhesive A components.

The preparation steps of described environment-friendly color non-skid pavement adhesive B component comprise:

1) Weigh 70 molar parts of methylcyclopentadiamine and 10 molar parts of polyetheramine in a reactor, heat to 60°C, stir and mix evenly, and protect with nitrogen;

2) Slowly add 80 parts of diglycidyl tetrahydrophthalate in a molar amount into the reactor in step 1), and keep stirring at 60°C for 12 hours after the addition is completed, at a stirring speed of 1500rpm, until Turn into brown-yellow viscous liquid;

3) Slowly add 20 parts of hexanediol diglycidyl ether in a molar amount to the product in step 2), and keep stirring at 60° C. for 8 hours after the addition is completed, at a stirring speed of 1500 rpm;

4) Keep the temperature and rotational speed constant, slowly add deionized water to the product of step 3) to prepare a brownish-yellow homogeneous liquid with a solid content of 50wt%, and keep stirring after the addition until there is no foaming or wire drawing , to obtain the B component of the environment-friendly colored non-slip road adhesive.

The preparation steps of the A component of the environment-friendly colored non-slip pavement surface protection agent include:

1) Dry castor oil, trimethylolpropane, dimethyl carbonate, HMDI, hydroxyethyl methacrylate, and bismethylol butyric acid in a vacuum oven at 40°C to remove moisture, and then place them in a CaCl ₂ in a desiccator at 25°C for 72 hours;

2) Put 60 parts of HMDI in the reactor, adjust the reaction temperature to 70-75°C, the stirring speed to 1500rpm, pass through _N2 for protection, set a 5°C condensation recovery device at the _N2 outlet, and then slowly drop Dissolve the dimethyl carbonate solution that is 3 parts of trimethylolpropane and 7 parts of castor oil in molar weight, and continue to react for 1h after the dropwise addition is completed;

3) Adjust the reaction temperature to 60°C, add 18 parts of hydroxyethyl methacrylate dropwise into the reactor in step 2), the dropwise addition time is 1h, and the stirring speed is 3000rpm;

4) further reduce the reaction temperature to 40°C, then keep the stirring speed constant, add potassium persulfate to the product of step 3), and then slowly add 54 parts of MMA monomer with a molar amount of 54 parts, and the dropping time is 1h, After the dropwise addition is completed, add phenol rapidly, and the addition of phenol is 0.5% of the MMA quality;

5) The stirring speed was adjusted to 3000rpm, the reaction temperature was adjusted to 60°C, and 8 parts of bismethylol butyric acid in molar weight was added dropwise to the product of step 4). 8 parts of triethylamine were stirred for 30 minutes, and the excess dimethyl carbonate solvent in the reactant was removed by vacuum heating until the viscous liquid no longer had bubbles;

6) Add deionized water to adjust the solid content to 50wt%, add defoamer and stir evenly to obtain component A of the environmental-friendly colored pavement surface protection agent.

The preparation steps of the B component of the environment-friendly colored pavement surface protection agent include:

1) Place 40 parts of diglycidyl hexahydrophthalate in a molar amount in a reactor, adjust the reaction temperature to 60°C, stir at a speed of 1500 rpm, protect with nitrogen gas, and add 15 parts of polyetheramine D400 dropwise, Obtained epoxy resin prepolymer;

2) Weigh castor oil with a molar weight of 50 parts, add boron trifluoride diethyl ether, the mass of boron trifluoride diethyl ether is 0.5% of the mass of castor oil, then adjust the reaction temperature to 60°C after stirring evenly, pass nitrogen protection, stir The speed is adjusted to 1500rpm;

3) Slowly add the epoxy resin prepolymer prepared in step 1) to the mixture in step 2) dropwise for 2 hours, keep stirring at 60°C for 6 hours, the stirring speed is 1500rpm, add DMC dropwise to adjust the viscosity;

4) keep the reaction temperature and the stirring speed constant, and dropwise add 20 parts of HMDI modified by DMPA grafting in the product of step 3), and continue the reaction for 1h after the dropwise addition;

5) Keep the temperature and rotation speed constant, add 20 parts of triethanolamine at one time to neutralize the product of step 4), then vacuumize to remove excess DMC until no bubbles are generated in the reactant liquid, then slowly add Deionized water is prepared into a dispersion liquid with a solid content of 50wt%, and after the dropwise addition is completed, the stirring is continued until there is no foaming or stringing phenomenon, and the environmental protection type B component of the colored pavement surface protection agent is obtained.

In the synthesis of environmentally friendly colored non-slip road adhesives:

It is necessary to strictly control the feeding speed and reaction temperature, especially in the process of polyurethane prepolymerization and polyurethane modified epoxy resin. The feeding speed and reaction temperature are the key to the success of the experiment. Improper temperature and stirring speed will cause gel or implosion reaction.

After the polyurethane-modified epoxy resin is completed, the organic solvent dimethyl carbonate needs to be recovered by vacuuming. If the recovery is not clean, it will cause problems such as delamination, incomplete emulsification, and excessive viscosity of the emulsion in the subsequent emulsification process. In the preparation process of component B of the environmental-friendly color anti-skid road adhesive, the use of diglycidyl tetrahydrophthalate can improve the compatibility of component B and E51 in component A, which is beneficial to the two-component curing process of the adhesive Compared with E51, bisglycidyl tetrahydrophthalate has a better spatial rotation ability, and the presence of unsaturated bonds also improves the water damage resistance of the entire system after the curing reaction of the adhesive is completed. The ability is better than that of straight chain glycidyl ester.

In the synthesis process of environment-friendly colored non-slip pavement surface protection agent:

It is necessary to control the reaction temperature and reaction speed. During the polymerization of polyurethane, no polyurethane catalyst should be added to prevent insufficient storage stability of the product caused by catalyst residue, and the problem that the sprayer is difficult to apply due to the increase in the viscosity of the sample in the later stage. During the experiment, the use of HMDI isocyanate can prevent the yellowing and powdering caused by the ultraviolet aging of isocyanate with benzene ring structure. At the same time, HMDI is less reactive than isocyanate with benzene ring structure and has a longer operating time, but compared with Compared with HDI, the reactivity is higher, which avoids the problem of too long working time.

When MMA is grafted to modify the polyurethane prepolymer, it is necessary to control the reaction temperature and stirring speed, so that the heat released by the free radical polymerization of MMA can be dissipated in time, and at the same time, the addition speed of MMA should be controlled to prevent the gelation of the prepolymer due to implosion. After the reaction, adding a small amount of phenol can effectively prevent the further self-polymerization of the incompletely reflected acrylate group in the heavy end chain of the polyurethane prepolymer, which will lead to system instability.

The process of prepolymerization in components A and B of the surface protection agent is mainly due to the low reactivity and small molecular weight of isocyanate and castor oil. Without prepolymerization, it is easy to make it difficult to form a film after construction, and the low degree of polymerization will cause the surface protection agent Incomplete response.

Both TMP and castor oil have the function of graft modification, but the main purpose of introducing castor oil is to increase the molecular weight of the prepolymer. If the content of TMP is too low, it will easily lead to a decrease in the node density of the crosslinking reaction, resulting in poor strength. If the content of TMP is too high It is easy to cause the molecular weight of the soft end of the prepolymer to be too short, and the toughness and ductility of the polymer are poor. Therefore, the molar ratio of TMP and castor oil is selected to be 3:7 for comprehensive use requirements.

The advantages of the present invention are:

1. The environment-friendly colored non-slip road adhesive prepared by the present invention is modified through polyurethane toughening, and the water-based epoxy resin through polyurethane toughening modification has a good toughening effect, and the elongation at break and the shear strength are comparable. Compared with the commercially available water-based epoxy resin, it has been significantly improved; the tensile strength, elongation at break and shear strength are well matched, which makes the crack resistance and fatigue resistance of the prepared colored non-slip pavement significantly improved ;

2. The PEG structure with large molecular weight is introduced into the prepared polyurethane graft modified epoxy resin, so that it has a certain emulsification ability, and can emulsify E51 into a stable emulsion, but compared with the existing water-based epoxy resin The emulsifying ability of the emulsifier in the epoxy resin is poor, mainly because the molecular weight of the hydrophilic group in the polyurethane modified epoxy resin is relatively low, because the introduction of more hydrophilic groups will make the water damage resistance of the final product Significant attenuation, so when the emulsification ability is satisfied, the introduction of hydrophilic molecular segments is as small as possible;

3. HMDI and refined castor oil are introduced into the polyurethane modified epoxy resin, and the hydrogenated bisphenol A epoxy resin used in the epoxy resin has better spatial mobility and rotation ability, which makes the environmentally friendly colored road adhesive break Excellent elongation and shear strength properties;

4. The use of surface protective agent effectively improves the anti-peeling ability of the colored anti-slip pavement ceramic particles, and further improves the water damage resistance of the environmentally friendly colored anti-slip pavement;

5. Potassium acetate particles can sink into the transparent surface protective agent or be partially embedded on the surface of the surface protective agent. According to the structural depth of the colored anti-skid road surface, control the amount of spraying to ensure that most of the potassium acetate particles are embedded in the Between the ceramic particles and not higher than the ceramic particles, it can melt ice and snow in ice and snow weather, and potassium acetate can be sprayed synchronously during the maintenance of the surface protective agent on the environmentally friendly colored anti-skid road every year, so as to avoid The problem that the ice-melting ability gradually weakens with the passage of time is solved.

Detailed ways

In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.

Example 1:

1. Preparation of component A of environmentally friendly colored non-slip pavement adhesive:

1) Dry castor oil (purity 99.5%), polyethylene glycol 2000, dimethyl carbonate, 4,4'-dicyclohexylmethane diisocyanate (referred to as HMDI) in a vacuum oven at 40°C to remove moisture , and then placed in a CaCl ₂ desiccator at 25°C for 72h;

2) Dissolve a mixture of 10 molar parts of castor oil and 10 molar parts of polyethylene glycol (molecular weight 2000) into 30 molar parts of dimethyl carbonate, and place it in a reactor at a temperature of 45°C , stir evenly until completely dissolved, then provide 99.99% _N2 protection to the reactor, the reactor is heated by an oil bath, the reaction temperature is adjusted to 70°C, the mechanical stirring speed is 3000rpm, and a 5°C condensation recovery device is set at the _N2 outlet, It is used to collect the evaporated dimethyl carbonate. The reaction process needs to control the reaction temperature and speed up the stirring speed to prevent the heat release in the reaction process from being dissipated in time, resulting in implosion reaction and gel agglomeration;

3) Weigh 20 parts of 4,4'-dicyclohexylmethane diisocyanate (referred to as HMDI), and slowly add it dropwise to the reactor of 2), at a rate of 10 mol/h, and keep the reaction conditions after the addition is completed Unchanged, continue to react for 3h, and obtain the reaction product ①;

4) Weigh 15 parts of diglycidyl hexahydrophthalate and place it in the reactor, provide nitrogen protection, adjust the reaction temperature to 70°C, stir at 1500rpm, add a mass fraction of hexahydrophthalate diglycidyl Diglycidyl formate 0.5% boron trifluoride ethyl ether, after stirring evenly, slowly add the reaction product ① dropwise for 3 hours, and continue to stir for 2 hours after the dropwise addition to obtain the reaction product ②; In the process, it is necessary to control the stirring speed to make the reaction more complete, reduce the reaction temperature, and prevent the NH- in the polyurethane from reacting with the epoxy group intensified due to excessive temperature, resulting in the curing of the polyurethane modified epoxy resin gel;

5) Heat the reaction product ② to 80°C, stop the flow of N ₂ , connect a vacuum pump to the 5°C condensation recovery device at the N ₂ outlet, and perform vacuum pumping operation, adjust the stirring speed of the reactor to 3000rpm, and pump at a constant temperature Vacuum treatment for 1 hour, a large number of bubbles are generated in the reaction product ② at the beginning, until no bubbles are generated, the light yellow transparent mucus substance is obtained as the reaction product ③;

6) Add bisphenol A epoxy resin E51 with a molar mass of 85 parts to the reaction product ③, adjust the reaction temperature to 60°C, adjust the stirring speed to 3000rpm, remove the vacuum device, let the entire reaction equipment communicate with the atmosphere, and then slowly Deionized water must be added dropwise, and the whole dropwise addition process is 30min. After the dropwise addition is completed, keep the temperature and stirring speed constant and continue to stir for 30min to prepare a modified epoxy resin emulsion with a solid content of 50% ④;

7) Add 0.5% stabilizer PVA and 0.5% leveling agent alkyl-modified organosiloxane to 6), and continue to stir for 15 minutes until a homogeneous milky white emulsion appears, which is environmentally friendly Color non-slip road adhesive component A.

2. Preparation of component B of environmentally friendly colored anti-skid road adhesive:

1) Weigh 70 parts of methylcyclopentadiamine (TAC-900) and 10 parts of polyetheramine D400 in a molar amount, heat them in a reactor to 60°C, stir and mix evenly, and protect with nitrogen;

2) Slowly add diglycidyl tetrahydrophthalate with a molar weight of 80 parts to 1) dropwise at a molar weight of 0.5 parts/min, and keep stirring at 60°C for 12 hours at a stirring speed of 1500 rpm until liquid Turn into brown-yellow viscous liquid;

3) Slowly add 20 parts of hexanediol diglycidyl ether dropwise into 2) at a molar rate of 0.5 parts/min, keep stirring at 60°C for 8 hours at a stirring speed of 1500 rpm, and gradually increase the viscosity of the liquid , the color is still brownish-yellow viscous liquid, the dropping rate and reaction temperature should not be too fast, too fast will lead to gel phenomenon;

4) Keep the temperature and rotation speed constant, slowly add deionized water to 3) to form a brown-yellow homogeneous liquid with a solid content of 50%, and continue stirring after the addition until there is no foam or wire drawing. Obtain environment-friendly colored non-skid road adhesive B component.

3. Preparation of component A of environmental protection color non-slip pavement surface protection agent:

1) Extract castor oil (purity 99.5%), trimethylolpropane (TMP), dimethyl carbonate (DMC), HMDI, hydroxyethyl methacrylate and bismethylol butyric acid (DMBA) at 40°C Dry in a vacuum oven to remove moisture, then place in a CaCl ₂ desiccator at 25°C for 72 hours;

2) Put 60 parts of HMDI in the reactor, adjust the reaction temperature to 70°C to 75°C, the stirring speed to 1500rpm, pass through _N2 for protection, and install a condensation recovery device at 5°C at the _N2 outlet for collection Evaporated dimethyl carbonate (reaction temperature is too high will cause the prepolymer molecular weight to increase too fast, resulting in the difficulty of subsequent grafting modification, no catalyst is added to control the reaction speed), and then slowly added dropwise dissolved TMP and castor oil DMC solution (containing TMP molar weight altogether is 3 parts, and castor oil molar weight is 7 parts), and the rate of addition is 5 molar parts/h, continues to react 1h after dropping;

3) Adjust the reaction temperature to 60°C, drop 18 parts of hydroxyethyl methacrylate (HEMA) into 2) dropwise, the dropwise addition time is 1h, and the stirring speed is 3000rpm (reduce the reaction speed, increase the exothermic , to prevent self-aggregation of HEMA);

4) Further reduce the reaction temperature to 40° C., then keep the stirring speed constant, add potassium persulfate to 3), the quality of potassium persulfate is 0.5% of the HEMA mass, and then slowly add dropwise a molar amount of 54 parts of MMA Monomer, the dropping time is 1h, and phenol is added quickly after the dropping is completed, and the amount of phenol added is 0.5% of the MMA mass (to prevent free radical polymerization of the polyurethane prepolymer modified by MMA grafting and cause gel agglomeration);

5) The stirring speed was adjusted to 3000rpm, the reaction temperature was adjusted to 60°C, and 8 parts of DMBA was added dropwise to 4) at a rate of 2 parts/h. 8 parts of triethylamine were stirred for 30 minutes, and then the excess DMC solvent in the reactant was removed by vacuum heating until the viscous liquid no longer had bubbles;

6) Then add deionized water to adjust the solid content to 50%, add 0.5wt% polyether modified silicone defoamer of the total solid content and stir evenly, and then prepare an environmentally friendly colored anti-skid pavement surface layer protective agent group A point.

4. Preparation of component B of environmental protection color non-slip pavement surface protection agent:

1) Place 40 parts of diglycidyl hexahydrophthalate in a molar amount in a reactor, adjust the reaction temperature to 60°C, stir at a speed of 1500 rpm, protect with nitrogen gas, and add 15 parts of polyetheramine D400 dropwise, Drop rate is 5 parts/h, makes epoxy resin prepolymer;

2) Weigh 50 molar parts of castor oil, add 0.5% boron trifluoride diethyl ether of castor oil mass, then adjust the reaction temperature to 60°C after stirring evenly, protect with nitrogen gas, and adjust the stirring speed to 1500rpm;

3) Slowly add the epoxy resin prepolymer prepared in 1) to 2) dropwise for 2 hours, keep stirring at 60°C for 6 hours, and the stirring speed is 1500rpm. After the reaction is completed, add DMC to it to adjust the product viscosity ;

4) Keeping the reaction temperature and the stirring speed constant, add 20 parts of DMPA graft-modified HMDI dropwise to 3) at a rate of 5 parts/h, and continue to react for 1 hour after the addition;

5) Keep the temperature and rotation speed constant, add 20 parts of triethanolamine at one time to neutralize the product of 4), then vacuumize to remove excess DMC until no bubbles are generated in the reactant liquid, then slowly drop to remove Ionized water is prepared into a dispersion liquid with a solid content of 50%. After the dropwise addition is completed, the stirring is continued until there is no foaming or stringing phenomenon, and the environmental protection type B component of the color anti-skid road surface protection agent is obtained.

5. Preparation of environmentally friendly colored non-slip pavement that can melt ice:

1) Clean and sweep the road surface under construction. The construction ground must be clean, free of oil, powder, clear water, and floating ash;

2) Repair the damaged part of the base surface with epoxy mortar, and the concrete surface must be clean, dry and firm;

3) Mix 100 parts by mass of environmentally friendly color anti-slip road adhesive component A, 150 mass parts of environmentally friendly colored anti-slip road adhesive component B, 100 mass parts of tap water and 10 mass parts of pigment; stir evenly with a stirrer at a stirring speed of 1500rpm , stirring time 5min, until the emulsion presents a uniform pigment color;

4) Pour the prepared environmentally friendly color non-slip road adhesive on the construction road surface, spread it with a jagged squeegee (the width of the saw teeth is 2mm, and the depth is 3mm), and wait for the environment-friendly color anti-skid road adhesive to automatically flow into a completely smooth flow;

5) Sprinkle colored ceramic particles with a particle size of 1-3 mm from top to bottom until the colored ceramic particles completely cover the environmentally friendly colored non-slip road adhesive;

6) After the environment-friendly color anti-skid road adhesive is completely solidified (≥ 24h), use a broom to clean the color ceramic particles that are not fully bonded on the surface, and use a road cleaning tool to uniformly purge;

7) After collecting the excess aggregate, mix the environmental protection color anti-slip pavement surface protection agent A and B components according to the mass ratio of 1.5:2, then add water to adjust the viscosity of the entire surface protection agent, and spray it on the road surface by spraying machine surface;

8) Within 5 minutes after the surface protective agent is sprayed, manually sprinkle potassium acetate solid particles with a particle size of 0.5mm, and the spraying amount is 0.5kg/m ² . The depth of the structure is related to ensure that all the potassium acetate particles are inlaid between the ceramic particles. After hard drying, an environmentally friendly colored non-slip road surface that can melt ice can be prepared.

Performance evaluation of the environment-friendly colored non-skid pavement adhesive prepared above:

1) Set aside a part of the above-mentioned environment-friendly colored non-slip road adhesive for mechanical performance testing, and prepare the rest as a wet wheel wear test piece.

2) In order to better test the life of the colored anti-skid pavement prepared by different materials, the present invention adopts the accelerated loading fatigue testing machine to test, and makes the prototype AC-13 asphalt mixture specimen with a thickness of 5cm. The pavement construction method is to pave the colored non-slip pavement, and clean the excess ceramic particles on the surface after curing at room temperature. Weigh the mass m ₀ of the test block that has not been paved with colored anti-skid pavement, the mass m ₁ of the test block after paving the colored anti-skid pavement and collecting excess aggregate, and clean up the excess ceramic particles and waste suspended on the surface after the accelerated loading fatigue test is completed Finally, weigh the mass m ₂ of the test piece again, and measure the fatigue resistance of the colored non-slip pavement through the mass loss ratio.

Fatigue resistance p=(m ₁ -m ₂ )/(m ₁ -m ₀ )*100%

3) Environmental protection performance test: evaluate the environmental protection performance of the material by testing the VOCs content in the adhesive;

4) Emulsion storage stability test: after centrifugation at 3000rpm and 30min, observe the layering of the test;

5) Viscosity test: to investigate the flow performance of the adhesive after mixing, which is used to investigate the actual construction performance;

6) Curing time: used to investigate the construction closure time, and to measure the open traffic time in the actual construction process;

7) Mechanical properties test: used to evaluate the mechanical properties and shrinkage of materials.

Comparative example 1:

Conventional water-based epoxy resin adhesive: prepared from water-based epoxy resin emulsion (Wuhan Shiquanxing New Material Technology Co., Ltd.) and water-based epoxy resin curing agent (Shandong Haoyao New Material Co., Ltd.) with a mass ratio of 1:1, adding 5wt% pigment, after stirring evenly, set aside a part for mechanical performance test, and prepare the rest as wet wheel abrasion test piece. Potassium acetate granules are not sprinkled. The performance test method is the same as in Example 1.

Comparative example 2:

Polyurethane adhesive: It is prepared by 4:1 3070 resin (Henan Side Chemical Technology Co., Ltd.) and MDI-50 curing agent (Wanhua Chemical Group Co., Ltd.), adding 5wt% pigment, and leaving a part for mechanical For performance testing, the remaining parts are prepared as wet wheel wear specimens. Potassium acetate granules are not sprinkled. The performance test method is the same as in Example 1.

Comparative example 3:

MMA adhesive: It is made of MMA resin (Taiyuan Choucheng Technology Co., Ltd.) and dibenzoyl peroxide initiator with a mass ratio of 100:2, adding 5wt% of pigment, stirring evenly, leaving a part for mechanical performance testing, and the rest Some of them were prepared as wet wheel wear test pieces. Potassium acetate granules are not sprinkled. The performance test method is the same as in Example 1.

The above performance test results are shown in the table below, and the test methods refer to relevant standards.

As can be seen from the results in the experiment, the performance of the environment-friendly colored non-slip pavement material prepared by the present invention is generally better than that of conventional water-based epoxy resin and polyurethane, and its fatigue resistance is not as good as that of MMA, but its environmental protection performance is better than that of MMA.

The environmental-friendly color non-slip pavement after adding the surface protective agent has significantly improved the water damage resistance and fatigue test performance, mainly due to the sandwich structure formed by the environmental-friendly color adhesive + ceramic particles + surface protective agent, making the ceramic particles It has better embeddedness and better wear resistance. The spreading of potassium acetate needs to be adjusted according to the structural depth of the colored non-slip pavement to ensure that the potassium acetate particles are all inlaid between the ceramic particles and not higher than the ceramic particles, which reduces the loss in non-ice and snow weather, and the potassium acetate dissolves in ice and snow weather Come out to play the role of melting ice. Moreover, potassium acetate can be sprayed synchronously when the surface protective agent is maintained on the environmentally friendly colored anti-skid pavement every year, so as to avoid the problem that the ice-melting ability gradually weakens with the passage of time.

Claims (1)

1. The preparation method of the ice-melting environment-friendly colored anti-skid pavement is characterized by comprising the following specific steps of:

1) Cleaning and purging the constructed pavement, wherein the constructed pavement is required to be cleaned, has no oil pollution, no pulverization, no clear water and no floating ash; repairing the damaged part of the basal plane by using epoxy mortar, and cleaning, drying and solidifying the surface of the concrete;

2) Mixing 100 parts by mass of an environment-friendly color anti-slip pavement adhesive A component, 150 parts by mass of an environment-friendly color anti-slip pavement adhesive B component, 100 parts by mass of tap water and 10 parts by mass of pigment, stirring for 3-5min at a rotating speed of 1000-1500rpm, pouring the mixture on a construction pavement, spreading the mixture, and spreading color ceramic particles with the particle size of 1-3mm until the color ceramic particles completely cover the environment-friendly color anti-slip pavement adhesive; curing for more than 24 hours, cleaning the colored ceramic particles with incompletely bonded surfaces by using a broom, and blowing by using a pavement blowing tool;

3) Uniformly mixing the component A of the environment-friendly color anti-skid pavement surface layer protective agent and the component B of the environment-friendly color anti-skid pavement surface layer protective agent according to the mass ratio of 1.2-1.5:2, and spraying the mixture on the surface of a pavement; the spraying is carried out within 3-5min, and the powder is manually scattered or distributed by a sieveUniformly throwing potassium acetate solid particles with the particle diameter of 0.5mm, wherein the distribution amount is 0.3-0.5kg/m ² After the ice is dried, the environment-friendly colored anti-skid pavement capable of melting ice is obtained;

the preparation method of the component A of the environment-friendly color anti-skid pavement adhesive comprises the following steps:

1) Drying oleum Ricini, polyethylene glycol 2000, dimethyl carbonate, and 4,4' -dicyclohexylmethane diisocyanate at 40deg.C in a vacuum drying oven to remove water, and placing in CaCl ₂ In the dryer of (2) at 25 ℃ for 72 hours;

2) A mixture of 10 parts by mole of castor oil and 10 parts by mole of polyethylene glycol 2000 was dissolved in 30 parts by mole of dimethyl carbonate, stirred uniformly at 45℃until completely dissolved, and then stirred at N ₂ Under the protection, the temperature is raised to 70 ℃, and the reaction is carried out for 3h under 3000rpm mechanical stirring, N ₂ The outlet is provided with a condensation recovery device at 5 ℃ for collecting the evaporated dimethyl carbonate;

3) Slowly dripping 20 parts of 4,4' -dicyclohexylmethane diisocyanate in molar weight into the reaction mixture in the step 2), keeping the reaction condition unchanged after the dripping is finished, and continuing the reaction for 3 hours to obtain a reaction product (1);

4) Weighing hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester with the molar weight of 15 parts, placing the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester into a reactor, adding boron trifluoride diethyl ether with the addition of 0.5 weight percent of the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester under the conditions of nitrogen protection, the reaction temperature of 70 ℃ and the stirring speed of 1500rpm, and slowly dropwise adding the reaction product (1) after uniformly stirring for 3 hours, and continuously stirring for 2 hours after dropwise adding to obtain the reaction product (2);

5) The reaction product (2) was heated to 80℃and N-flow was stopped ₂ At N ₂ The condensing recovery device at 5 ℃ of the outlet is connected with a vacuum pump, and the vacuum pumping treatment is carried out at a constant temperature and a constant speed under a stirring speed of 3000rpm until no bubbles are generated, and a yellowish transparent mucus substance is obtained as a reaction product (3);

6) Adding bisphenol A epoxy resin E51 with the molar quantity of 85 parts into the reaction product (3), adjusting the reaction temperature to 60 ℃, adjusting the stirring speed to 3000rpm, dismantling a vacuumizing device to ensure that the whole reaction equipment is communicated with the atmosphere, slowly dropwise adding deionized water for 30min-2h, and keeping the temperature and the stirring speed for continuous reaction for 30min after the dropwise adding is finished to obtain modified epoxy resin emulsion with the solid content of 50 wt%;

7) Adding 0.5% of stabilizer and leveling agent into the modified epoxy resin emulsion obtained in the step 6), and continuously stirring for 15min to form a homogeneous milky emulsion, namely the environment-friendly color anti-skid pavement adhesive A component;

the preparation steps of the component B of the environment-friendly color anti-skid pavement adhesive comprise:

1) Weighing 70 parts by mole of methylcyclopentadiene diamine and 10 parts by mole of polyether amine in a reactor, heating to 60 ℃, stirring and mixing uniformly, and introducing nitrogen for protection;

2) Slowly dripping 80 parts of tetrahydrodiglycidyl phthalate into the reactor in the step 1), and continuously stirring at 60 ℃ for 12h until the tetrahydrodiglycidyl phthalate turns into brown yellow viscous liquid at a stirring speed of 1500rpm;

3) Slowly dripping 20 parts of hexanediol diglycidyl ether into the product in the step 2), and continuously stirring at 60 ℃ for 8 hours after the dripping is finished, wherein the stirring speed is 1500rpm;

4) Slowly dripping deionized water into the product of the step 3) while keeping the temperature and the rotating speed unchanged to prepare a brown yellow homogeneous liquid with the solid content of 50wt%, and continuously stirring until no foaming and no wiredrawing phenomenon are caused after the dripping is finished, so as to obtain an environment-friendly color anti-skid pavement adhesive B component;

the preparation steps of the component A of the environment-friendly colored anti-skid pavement surface layer protective agent comprise:

1) Drying oleum Ricini, trimethylolpropane, dimethyl carbonate, HMDI, hydroxyethyl methacrylate, and bis-hydroxymethyl butyric acid at 40deg.C in vacuum drying oven to remove water, and placing in CaCl ₂ In the dryer of (2) at 25 ℃ for 72 hours;

2) HMDI in 60 parts by mole was placed in a reactor and adjustedThe whole reaction temperature is 70-75 ℃, the stirring speed is 1500rpm, and N is introduced ₂ Protection, N ₂ A condensing recovery device at the temperature of 5 ℃ is arranged at the outlet, then a dimethyl carbonate solution with 3 parts of trimethylolpropane and 7 parts of castor oil in molar quantity is slowly dripped, and the reaction is continued for 1h after the dripping is completed;

3) Adjusting the reaction temperature to 60 ℃, dropwise adding 18 parts of hydroxyethyl methacrylate in molar quantity into the reactor in the step 2) for 1h, and stirring at a speed of 3000rpm;

4) Further reducing the reaction temperature to 40 ℃, then keeping the stirring speed unchanged, adding potassium persulfate into the product of the step 3), slowly dropwise adding 54 parts of MMA monomer in molar quantity for 1h, and rapidly adding phenol after the completion of dropwise adding, wherein the adding quantity of the phenol is 0.5% of the mass of MMA;

5) The stirring speed is adjusted to 3000rpm, the reaction temperature is adjusted to 60 ℃, 8 parts of dihydroxymethyl butyric acid with molar weight is dripped into the product of the step 4), the reaction is continued for 1h after the dripping is finished, then triethylamine with 8 parts of molar weight is added at one time, the mixture is stirred for 30min, and the excessive dimethyl carbonate solvent in the reactant is removed by a vacuumizing heating mode until no bubbles are generated in the viscous liquid;

6) Adding deionized water to adjust the solid content to 50wt%, adding a defoaming agent, and uniformly stirring to obtain an environment-friendly color anti-skid pavement surface layer protective agent A component;

the preparation steps of the component B of the environment-friendly color anti-skid pavement surface layer protective agent comprise:

1) Placing 40 parts by mole of diglycidyl hexahydrophthalate in a reactor, adjusting the reaction temperature to 60 ℃, stirring at 1500rpm, introducing nitrogen for protection, and dropwise adding 15 parts by mole of polyetheramine D400 to prepare an epoxy resin prepolymer;

2) Weighing 50 parts of castor oil in molar weight, adding boron trifluoride diethyl etherate, wherein the mass of the boron trifluoride diethyl etherate is 0.5% of that of the castor oil, uniformly stirring, adjusting the reaction temperature to 60 ℃, introducing nitrogen for protection, and adjusting the stirring speed to 1500rpm;

3) Slowly dripping the epoxy resin prepolymer prepared in the step 1) into the mixture in the step 2) for 2h, keeping stirring at 60 ℃ for reaction for 6h, wherein the stirring speed is 1500rpm, and dripping DMC to adjust the viscosity of the product;

4) Dropwise adding 20 parts of HMDI grafted and modified by DMPA into the product of the step 3) in molar quantity, keeping the reaction temperature and stirring speed unchanged, and continuing to react for 1h after the dropwise adding is finished;

5) Keeping the temperature and the rotating speed unchanged, adding triethanolamine with the molar quantity of 20 parts at one time to neutralize the product of the step 4), vacuumizing to remove redundant DMC until no bubbles are generated in reactant liquid, slowly dripping deionized water to prepare a dispersion liquid with the solid content of 50wt%, and continuously stirring until no foaming and no wire drawing phenomenon occur after the dripping is finished, thus obtaining the component B of the environment-friendly color anti-skid pavement surface layer protective agent.