CN112852377A - Self-luminous environment-friendly colorful anti-skid pavement and preparation method thereof - Google Patents
Self-luminous environment-friendly colorful anti-skid pavement and preparation method thereof Download PDFInfo
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- CN112852377A CN112852377A CN202011635722.6A CN202011635722A CN112852377A CN 112852377 A CN112852377 A CN 112852377A CN 202011635722 A CN202011635722 A CN 202011635722A CN 112852377 A CN112852377 A CN 112852377A
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- skid
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
- C08F283/008—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00 on to unsaturated polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/08—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
- E01F9/518—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces formed in situ, e.g. by painting, by casting into the road surface or by deforming the road surface
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an environment-friendly colorful anti-skid pavement capable of self-luminescence and a preparation method thereof. Firstly, repairing and cleaning a road surface; then paving an environment-friendly color anti-skid pavement adhesive, and spreading color ceramic particles on the adhesive; after the adhesive is solidified, the environment-friendly color antiskid pavement surface layer protective agent is sprayed, and the noctilucent stone or fluorescent powder is spread within 3-5min after the spraying. The environment-friendly color anti-skid pavement adhesive is toughened and modified by polyurethane, has better matching property of elongation at break and shear strength, and obviously improves the crack resistance and fatigue resistance of the laid color anti-skid pavement. The use of the surface layer protective agent effectively improves the anti-stripping capability of the ceramic particles of the colored anti-skid pavement and further improves the water loss resistance of the environment-friendly colored anti-skid pavement. The application of the fluorescent stone or the fluorescent powder effectively improves the night visual effect of the color anti-skid road surface and provides higher safety indication for the color anti-skid road surface in rainy days and at night.
Description
Technical Field
The invention belongs to the technical field of pavement maintenance, and particularly relates to an environment-friendly color anti-skid pavement capable of self-luminescence and a preparation method thereof.
Background
With the gradual saturation of the development of large traffic construction, the construction of some low-grade roads becomes the main force point of new traffic construction. Particularly, with the lack of lighting facilities and incomplete surrounding safety protection facilities in places and areas such as tourist roads, mountain roads, rural lanes and the like, great hidden dangers are brought to the running safety of pedestrians and vehicles. And the road surfaces are often positioned in mountainous areas, shady places and the like, so that the potential safety hazard of road driving is large. The application of the colored anti-skid road surface can effectively improve the driving safety of the road sections, but the risks caused by poor sight, insufficient safety and incomplete traffic indication facilities at night cannot be solved.
In order to improve the running safety and further improve the functions of safety indication, running safety, wear resistance, skid resistance and the like of a road to the maximum extent under the condition of no lighting facilities, and improve the running safety of the road, the special requirement and significance are provided.
The current color antiskid pavement can not meet the requirements of customized work functions according to scene requirements when applied in different scenes, and mainly takes traditional antiskid and warning as main points. In order to apply the colored antiskid pavement to expressways, curves and mountain roads, the antiskid pavement can play a role in antiskid warning, and can also play a role in indicating, guiding and warning of road markings and signs, so that the colored pavement needs to be functionally modified. The current color pavement has insufficient environmental protection performance, and cracks and particles are seriously removed after construction, so that other new functions and effects are difficult to add.
In order to better apply colored pavement to the above mentioned locations, it is desirable to integrate some of the functions of the safety indicating sign marking into colored non-skid pavement. The lowest luminance of 0.0003cd/m2 can be seen in dark environment by the general human vision. Therefore, on the basis of preparing the environment-friendly color anti-skid pavement which is energy-saving and environment-friendly, convenient and fast to construct, moderate in bonding strength and elongation at break, and capable of effectively preventing ceramic particles from falling off too early, the indicating and guiding functions of the road marking are integrated, so that the fluorescence brightness of the self-luminous environment-friendly color pavement can still reach 0.006cd/m2 (which is 20 times greater than human brightness vision) after 10 hours, the whole night can be basically ensured to have an effective noctilucent indicating effect, and meanwhile, the environment-friendly color anti-skid pavement which is suitable for the current situation of asphalt pavements in China has important practical significance.
Disclosure of Invention
In order to effectively overcome the problems of cracking of the colored anti-skid road surface caused by large shrinkage rate and insufficient elongation at break of the existing waterborne epoxy resin and insufficient abrasion performance of the colored anti-skid road surface caused by serious early grain dropping, the indication and guide effects of the luminous mark marking line are integrated. The invention develops an environment-friendly color anti-skid pavement capable of self-luminescence and a preparation method thereof.
The preparation method of the self-luminous environment-friendly color anti-skid pavement comprises the following steps:
1) cleaning and sweeping the constructed pavement, wherein the constructed ground needs to be clean, free of oil stain, pulverization, clear water and floating ash; repairing the damaged part of the base surface by using epoxy mortar, wherein the surface of the concrete needs to be clean, dry and firm;
2) mixing 100 parts by mass of an environment-friendly color anti-skid pavement adhesive A component, 150 parts by mass of an environment-friendly color anti-skid pavement adhesive B component, 100 parts by mass of tap water and 10 parts by mass of pigment, stirring at the rotating speed of 1000 plus 1500rpm for 3-5min, 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-skid pavement adhesive; curing for more than 24 hours, cleaning the color ceramic particles which are not completely bonded on the surface by using a broom, and blowing by using a road surface blowing tool;
3) uniformly mixing the component A of the environment-friendly color antiskid pavement surface layer protective agent and the component B of the environment-friendly color antiskid 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; uniformly throwing noctilucent stones or fluorescent powder with the particle size of 1-2mm by manual spreading or distribution sieve within 3-5min after spraying, wherein the spreading amount of the noctilucent stones is 1-2kg/m2The spraying amount of the fluorescent powder is 0.5-1kg/m2After the road surface is completely dried, the self-luminous environment-friendly color antiskid road surface can be 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 in vacuum oven at 40 deg.C to remove water, and placing in CaCl2The dryer (2) is placed for 72 hours at the temperature of 25 ℃;
2) dissolving a mixture of castor oil 10 parts by mole and polyethylene glycol 2000 10 parts by mole in dimethyl carbonate 30 parts by mole, stirring at 45 deg.C until completely dissolved, and adding N2Heating to 70 ℃ under protection, mechanically stirring at 3000rpm for 3h, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet and is used for collecting the evaporated dimethyl carbonate;
3) weighing 20 parts by molar weight of 4,4 '-dicyclohexylmethane diisocyanate, slowly dropwise adding the 4,4' -dicyclohexylmethane diisocyanate into the reaction mixture obtained in the step 2), keeping the reaction conditions unchanged after dropwise adding, and continuously reacting for 3 hours to obtain a reaction product I;
4) weighing 15 parts of hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester, placing the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester into a reactor, adding boron trifluoride diethyl etherate under the conditions of nitrogen protection, reaction temperature of 70 ℃ and stirring speed of 1500rpm, wherein the addition amount of the boron trifluoride diethyl etherate is 0.5 wt% of the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester, stirring uniformly, slowly dropwise adding a reaction product I for 3 hours, and continuously stirring for reaction for 2 hours after dropwise adding to obtain a reaction product II;
5) heating the reaction product to 80 deg.cAnd stopping the connection of N2In N at2A 5 ℃ condensation recovery device at an outlet is connected with a vacuum pump, and the vacuum pump is used for carrying out vacuum pumping treatment at a constant temperature and a constant speed at a stirring speed of 3000rpm until no bubbles are generated to obtain a light yellow transparent viscous liquid substance as a reaction product (c);
6) adding 85 parts of bisphenol A epoxy resin E51 into the reaction product III, adjusting the reaction temperature to 60 ℃, adjusting the stirring speed to 3000rpm, removing the vacuumizing device, communicating the whole reaction equipment with the atmosphere, slowly dripping deionized water for 30min-2h, keeping the temperature and the stirring speed after dripping, and continuously reacting for 30min to obtain a modified epoxy resin emulsion with the solid content of 50 wt%;
7) and (3) adding a stabilizer and a flatting agent with the mass fraction of 0.5 percent into the modified epoxy resin emulsion obtained in the step 6), and continuing stirring for 15min to obtain homogeneous milky emulsion, namely the component A of the environment-friendly color anti-skid pavement adhesive.
The preparation method of the component B of the environment-friendly color anti-skid pavement adhesive comprises the following steps:
1) weighing 70 parts by mole of methylcyclopentanediamine and 10 parts by mole of polyetheramine, heating to 60 ℃, stirring and mixing uniformly, and introducing nitrogen for protection;
2) slowly dripping 80 parts of tetrahydrophthalic acid diglycidyl ester with the molar weight into the reactor in the step 1), and continuing to stir at 60 ℃ for 12 hours at the stirring speed of 1500rpm until the mixture becomes brown yellow viscous liquid;
3) slowly dripping 20 parts of hexanediol diglycidyl ether with the molar weight into the product obtained in the step 2), and continuing to stir at 60 ℃ for 8 hours at the stirring speed of 1500rpm after finishing dripping;
4) keeping the temperature and the rotating speed unchanged, slowly dripping deionized water into the product obtained in the step 3) to prepare brown yellow homogeneous liquid with the solid content of 50 wt%, and continuously stirring until no foaming and no wire drawing phenomenon are caused after the dripping is finished, thus obtaining the component B of the environment-friendly color anti-skid pavement adhesive.
The preparation method of the component A of the environment-friendly color antiskid pavement surface layer protective agent comprises the following steps:
1) drying oleum ricini, trimethylolpropane, dimethyl carbonate, HMDI, hydroxyethyl methacrylate and bis-hydroxymethyl butyric acid in vacuum oven at 40 deg.C to remove water, and placing in CaCl2The dryer (2) is placed for 72 hours at the temperature of 25 ℃;
2) putting 60 parts of HMDI (high molecular weight polyethylene) in a reactor, adjusting the reaction temperature to 70-75 ℃, stirring at 1500rpm, and introducing N2Protection, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet, then a dimethyl carbonate solution in which 3 parts by mole of trimethylolpropane and 7 parts by mole of castor oil are dissolved is slowly dripped, and the reaction is continued for 1 hour after the dripping is finished;
3) adjusting the reaction temperature to 60 ℃, dropwise adding 18 parts of hydroxyethyl methacrylate into the reactor in the step 2), wherein the dropwise adding time is 1h, and the stirring speed is 3000 rpm;
4) further reducing the reaction temperature to 40 ℃, keeping the stirring speed unchanged, adding potassium persulfate into the product obtained in the step 3), slowly dropwise adding 54 parts of MMA monomer in a molar amount for 1h, and rapidly adding phenol after the dropwise adding is completed, wherein the addition amount of the phenol is 0.5% of the mass of the MMA;
5) adjusting the stirring speed to 3000rpm, adjusting the reaction temperature to 60 ℃, dropwise adding 8 parts by mole of bis (hydroxymethyl) butyric acid into the product obtained in the step 4), continuing to react for 1h after dropwise adding is finished, then adding 8 parts by mole of triethylamine at one time, stirring for 30min, and removing the redundant dimethyl carbonate solvent in the reactant by a vacuum-pumping heating mode until no bubbles are generated in the viscous liquid;
6) deionized water is added to adjust the solid content to be 50 wt%, and the mixture is stirred uniformly after a defoaming agent is added, so that the component A of the environment-friendly color pavement surface layer protective agent is obtained.
The preparation method of the component B of the environment-friendly color pavement surface protective agent comprises the following steps:
1) placing 40 parts by molar weight of hexahydrophthalic acid diglycidyl ester into a reactor, adjusting the reaction temperature to 60 ℃, stirring at 1500rpm, introducing nitrogen for protection, and dropwise adding 15 parts by molar weight of polyetheramine D400 to obtain an epoxy resin prepolymer;
2) weighing 50 parts of castor oil by molar weight, adding boron trifluoride diethyl etherate, wherein the mass of the boron trifluoride diethyl etherate is 0.5 percent of that of the castor oil, uniformly stirring, adjusting the reaction temperature to 60 ℃, introducing nitrogen for protection, and adjusting the stirring speed to 1500 rpm;
3) slowly dripping the epoxy resin prepolymer prepared in the step 1) into the mixture in the step 2), wherein the dripping time is 2h, stirring and reacting for 6h at 60 ℃, the stirring speed is 1500rpm, and dripping DMC to adjust the viscosity of the product;
4) keeping the reaction temperature and the stirring speed unchanged, dropwise adding 20 parts of HMDI (dimethyl formamide) subjected to DMPA (dimethyl formamide) grafting modification into the product obtained in the step 3), and continuing to react for 1h after the dropwise addition is finished;
5) keeping the temperature and the rotating speed unchanged, adding 20 parts by mole of triethanolamine to neutralize the product obtained in the step 4), vacuumizing to remove redundant DMC until no bubbles are generated in the reactant liquid, slowly dropwise adding deionized water to prepare a dispersion liquid with the solid content of 50 wt%, and continuously stirring after dropwise adding until no foaming or wire drawing phenomenon occurs, thus obtaining the component B of the environment-friendly color pavement surface layer protective agent.
In the synthesis of the environment-friendly color antiskid pavement adhesive:
the feeding speed and the reaction temperature are strictly controlled, and particularly in the process of polyurethane prepolymerization and polyurethane modified epoxy resin, the feeding speed and the reaction temperature are key factors influencing the success of experiments, and the gel or implosion reaction can be caused when the temperature and the stirring speed are not proper.
After the polyurethane modified epoxy resin is finished, the organic solvent dimethyl carbonate needs to be recycled in a vacuum pumping manner, and if the organic solvent dimethyl carbonate is not recycled completely, the problems of layering, incomplete emulsification, overlarge emulsion viscosity and the like in the subsequent emulsification process can be caused. In the preparation process of the B component of the environment-friendly color antiskid pavement adhesive, the tetrahydrophthalic acid diglycidyl ester is adopted to improve the compatibility of the B component and E51 in the A component, so that the two components in the curing process of the adhesive can react more quickly, and the tetrahydrophthalic acid diglycidyl ester has better space rotation capability compared with E51, and the existence of unsaturated bonds also improves the water loss resistance of the whole system after the curing reaction of the adhesive is finished and is better than linear glycidyl ester.
In the synthesis process of the environment-friendly color antiskid pavement surface layer protective agent:
the reaction temperature and the reaction speed need to be controlled, a polyurethane catalyst cannot be added in the polymerization process of polyurethane, the problem that the storage stability of a product is not enough due to catalyst residue and the problem that a spraying machine is difficult to construct due to the fact that the viscosity of a sample is increased in the later period is solved. In the experimental process, the HMDI type isocyanate is adopted, so that yellowing and pulverization caused by ultraviolet aging of isocyanate with a benzene ring structure can be prevented, and meanwhile, compared with the isocyanate with a benzene ring structure, the HMDI has lower reactivity and longer operation time, but compared with HDI, the HMDI has higher reactivity and avoids the problem of overlong drying time.
When the MMA is grafted and modified by the polyurethane prepolymer, the reaction temperature and the stirring speed need to be controlled, so that heat emitted by MMA free radical polymerization can be timely dissipated, the MMA addition speed is controlled, the prepolymer is prevented from being gelled due to implosion, and a small amount of phenol is added after the reaction is finished, so that the instability of a system caused by further self-polymerization of the incompletely reflected acrylic acid radicals in the heavy-end chain of the polyurethane prepolymer can be effectively prevented.
The prepolymerization process of the components A and B of the surface layer protective agent is mainly characterized in that the reaction activity of isocyanate and castor oil is low, the molecular weight is small, the film forming after construction is difficult to realize without prepolymerization, and the incomplete reaction of the surface layer protective agent is caused by low polymerization degree.
TMP and castor oil both have the function of graft modification, but castor oil is introduced mainly to improve the molecular weight of the prepolymer, too low TMP content is easy to cause the reduction of the node density of the crosslinking reaction, thus leading to poor strength, and too high TMP content is easy to cause too short molecular weight of the soft end of the prepolymer, thus the toughness and ductility of the polymer are poor, so that the comprehensive use requirement selects the molar ratio of TMP to castor oil to be 3: 7.
The invention has the advantages that:
1. the environment-friendly color anti-skid pavement adhesive prepared by the invention is toughened and modified by polyurethane, and the waterborne epoxy resin toughened and modified by polyurethane has good toughening effect, and the elongation at break and the shear strength are obviously improved compared with the waterborne epoxy resin sold in the market; the tensile strength, the elongation at break and the shear strength have better matching performance, so that the crack resistance and the fatigue resistance of the prepared colorful antiskid pavement are obviously improved;
2. the PEG structure with high molecular weight is introduced in the process of the prepared polyurethane graft modified epoxy resin, so that the epoxy resin has certain emulsifying capacity, and E51 can be emulsified into stable emulsion, but the emulsifying capacity is poorer than that of an emulsifier in the existing water-based epoxy resin, mainly because the molecular weight occupied by hydrophilic groups in the polyurethane modified epoxy resin is relatively lower, and because more hydrophilic groups are introduced, the water loss resistance of a final product is obviously reduced, so that hydrophilic molecular connecting blocks are introduced as little as possible when the emulsifying capacity is met;
3. HMDI and refined castor oil are introduced into the polyurethane modified epoxy resin, and hydrogenated bisphenol A epoxy resin adopted by the epoxy resin has better space activity and rotation capability, so that the elongation at break and shear strength resistance of the environment-friendly color pavement adhesive are better;
4. the use of the surface layer protective agent effectively improves the anti-stripping capability of the ceramic particles of the colored anti-skid pavement and further improves the water loss resistance of the environment-friendly colored anti-skid pavement.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1:
firstly, preparing an environment-friendly color anti-skid pavement adhesive A component:
1) drying oleum ricini (purity 99.5%), polyethylene glycol 2000, dimethyl carbonate, and 4,4' -dicyclohexylmethane diisocyanate (HMDI) in a vacuum drying oven at 40 deg.C to remove water, and placing in CaCl2The dryer (2) is placed for 72 hours at the temperature of 25 ℃;
2) mixing the mixture in a molar amount of 1A mixture of 0 part of castor oil and 10 parts by mole of polyethylene glycol (molecular weight 2000) is dissolved in 30 parts by mole of dimethyl carbonate, placed in a reactor at a temperature of 45 ℃ and stirred until completely dissolved, and then the reactor is supplied with 99.99% N2Protection, the reactor is heated by adopting oil bath, the reaction temperature is adjusted to 70 ℃, the mechanical stirring speed is 3000rpm, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet and is used for collecting the evaporated dimethyl carbonate, the reaction temperature needs to be controlled in the reaction process, the stirring speed is accelerated, and the phenomena of implosion reaction and gel agglomeration caused by the fact that the heat release in the reaction process cannot be timely dissipated are prevented;
3) weighing 20 parts by molar weight of 4,4' -dicyclohexylmethane diisocyanate (HMDI for short), slowly dripping into the reactor of 2), wherein the dripping speed is 10mol/h, keeping the reaction condition unchanged after the dripping is finished, and continuously reacting for 3h to obtain a reaction product I;
4) weighing 15 parts of diglycidyl hexahydrophthalate, placing the diglycidyl hexahydrophthalate in a reactor, providing nitrogen protection, adjusting the reaction temperature to 70 ℃, stirring at 1500rpm, adding boron trifluoride diethyl etherate with the mass fraction of 0.5% of the diglycidyl hexahydrophthalate, uniformly stirring, slowly dropwise adding a reaction product (I) for 3 hours, and continuously stirring for reacting for 2 hours after dropwise adding to obtain a reaction product (II); in the reaction process, the stirring speed needs to be controlled to ensure that the reaction is more complete, the reaction temperature is reduced, and the phenomenon that the reaction degree of NH & lt- & gt and epoxy groups in polyurethane is deepened due to overhigh temperature to cause the gel curing of the polyurethane modified epoxy resin is prevented;
5) heating the reaction product to 80 ℃ and stopping introducing N2In N at2A 5 ℃ condensation recovery device at an outlet is connected with a vacuum pump for vacuum pumping operation, the stirring speed of the reactor is adjusted to 3000rpm, constant-temperature and constant-speed vacuum pumping treatment is carried out for 1h, a large amount of bubbles are generated in a reaction product II at the beginning, and a light yellow transparent mucus substance is obtained as a reaction product III until no bubbles are generated;
6) adding 85 parts of bisphenol A epoxy resin E51 into the reaction product (c), adjusting the reaction temperature to 60 ℃, adjusting the stirring speed to 3000rpm, removing the vacuumizing device, communicating the whole reaction equipment with the atmosphere, slowly dropwise adding deionized water, keeping the temperature and the stirring speed unchanged after dropwise adding for 30min, and continuously stirring for 30min to prepare a modified epoxy resin emulsion with 50% of solid content;
7) and (3) adding a stabilizer PVA (polyvinyl acetate) accounting for 0.5 percent of the total mass of the fourth step and a leveling agent alkyl modified organosiloxane accounting for 0.5 percent of the total mass of the fourth step into the mixture in the step (6), and continuously stirring the mixture for 15min until the mixture presents a homogeneous milky emulsion, namely the component A of the environment-friendly color anti-skid pavement adhesive.
Secondly, preparing an environment-friendly color anti-skid pavement adhesive B component:
1) weighing 70 parts by mole of methylcyclopentanediamine (TAC-900) and 10 parts by mole of polyetheramine D400, heating to 60 ℃, stirring and mixing uniformly, and introducing nitrogen for protection;
2) slowly dripping 80 parts of tetrahydrophthalic acid diglycidyl ester into the mixture obtained in the step 1), keeping the dripping speed at 60 ℃ and stirring for 12 hours at 1500rpm until the liquid becomes brown yellow viscous liquid;
3) slowly dripping 20 parts of hexanediol diglycidyl ether into the reactor 2), wherein the dripping speed is 0.5 part/min, stirring is carried out for 8 hours at 60 ℃, the stirring speed is 1500rpm, the viscosity of the liquid is gradually increased, the color is still brown yellow viscous liquid, the dripping speed and the reaction temperature cannot be too high, and the gel phenomenon can be caused if the dripping speed and the reaction temperature are too high;
4) keeping the temperature and the rotating speed unchanged, slowly dripping deionized water into the mixture in step 3) to prepare brown yellow homogeneous liquid with the solid content of 50%, and continuously stirring the mixture after dripping until no foaming and no wire drawing phenomenon occur, thus obtaining the component B of the environment-friendly color anti-skid pavement adhesive.
Thirdly, preparing an environment-friendly colorful antiskid pavement surface layer protective agent A component:
1) drying oleum ricini (purity 99.5%), Trimethylolpropane (TMP), dimethyl carbonate (DMC), HMDI, hydroxyethyl methacrylate and bis-hydroxymethyl butyric acid (DMBA) in vacuum oven at 40 deg.C to remove water, and placing in CaCl2In the dryerStanding at 25 deg.C for 72 h;
2) putting 60 parts of HMDI (high molecular weight polyethylene) in a reactor, adjusting the reaction temperature to 70-75 ℃, stirring at 1500rpm, and introducing N2Protection, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet and is used for collecting the evaporated dimethyl carbonate (the molecular weight of the prepolymer is increased too fast due to overhigh reaction temperature, so that the subsequent grafting modification is difficult, and the catalyst is not added so as to control the reaction speed), then the DMC solution dissolved with TMP and castor oil (the molar weight of the TMP is 3 parts and the molar weight of the castor oil is 7 parts) is slowly dripped at the dripping speed of 5 mol parts/h, and the reaction is continued for 1h after the dripping is finished;
3) adjusting the reaction temperature to 60 ℃, dropwise adding 18 parts by mole of hydroxyethyl methacrylate (HEMA) into the mixture in the step 2), wherein the dropwise adding time is 1h, and the stirring speed is 3000rpm (reducing the reaction speed, improving the heat release and preventing HEMA self-polymerization);
4) further reducing the reaction temperature to 40 ℃, keeping the stirring speed unchanged, adding potassium persulfate into the mixture 3), wherein the mass of the potassium persulfate is 0.5 percent of that of HEMA, slowly dropwise adding 54 parts of MMA monomer in a molar amount for 1h, and rapidly adding phenol after the dropwise adding is completed, wherein the addition amount of the phenol is 0.5 percent of that of the MMA (preventing the MMA graft modified polyurethane prepolymer from generating gel agglomeration caused by free radical polymerization);
5) stirring speed is adjusted to 3000rpm, reaction temperature is adjusted to 60 ℃, 8 parts of DMBA with molar weight is dripped into the mixture 4), dripping speed is 2 parts/h, reaction is continued for 1h after dripping is finished, then triethylamine with molar weight of 8 parts is added at one time for stirring for 30min, and then redundant DMC solvent in reactants is removed in a vacuumizing and heating mode until no bubbles are generated in viscous liquid;
6) then deionized water is added to adjust the solid content to be 50 percent, and polyether modified organic silicon defoamer with the weight percentage of 0.5 percent of the total solid content is added and stirred evenly, thus preparing the component A of the environment-friendly colorful antiskid pavement surface layer protective agent.
Fourthly, preparing an environment-friendly color antiskid pavement surface layer protective agent B component:
1) placing 40 parts by molar weight of hexahydrophthalic acid diglycidyl ester into a reactor, adjusting the reaction temperature to 60 ℃, stirring at 1500rpm, introducing nitrogen for protection, and dropwise adding 15 parts by molar weight of polyetheramine D400 at 5 parts/h to obtain an epoxy resin prepolymer;
2) weighing 50 parts of castor oil by molar weight, adding boron trifluoride diethyl etherate accounting for 0.5% of the mass of the castor oil, uniformly stirring, adjusting the reaction temperature to 60 ℃, introducing nitrogen for protection, and adjusting the stirring speed to 1500 rpm;
3) slowly dripping the epoxy resin prepolymer prepared in the step 1) into the step 2), wherein the dripping time is 2h, the temperature is kept at 60 ℃, stirring reaction is carried out for 6h, the stirring speed is 1500rpm, and DMC is added after the reaction is finished to adjust the viscosity of the product;
4) keeping the reaction temperature and the stirring speed unchanged, dropwise adding 20 parts of HMDI (dimethyl formamide) subjected to DMPA (dimethyl formamide) grafting modification into the mixture in the step 3), wherein the dropwise adding speed is 5 parts/h, and continuously reacting for 1h after the dropwise adding is finished;
5) keeping the temperature and the rotating speed unchanged, adding 20 parts by mol of triethanolamine to neutralize the product of 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 50%, and continuously stirring after dripping until no foaming or wire drawing phenomenon occurs, thus obtaining the component B of the environment-friendly color antiskid pavement surface layer protective agent.
Fifthly, preparing the self-luminous environment-friendly colorful anti-skid pavement:
1) cleaning and sweeping the constructed pavement, wherein the constructed ground needs to be clean, free of oil stain, pulverization, clear water and floating ash;
2) repairing the damaged part of the base surface by using epoxy mortar, wherein the surface of the concrete needs to be clean, dry and firm;
3) mixing 100 parts by mass of an environment-friendly color anti-skid pavement adhesive A component, 150 parts by mass of an environment-friendly color anti-skid pavement adhesive B component, 100 parts by mass of tap water and 10 parts by mass of pigment; stirring uniformly by a stirrer at the stirring speed of 1500rpm for 5min until the emulsion presents uniform pigment color;
4) pouring the prepared environment-friendly color anti-skid pavement adhesive on a construction pavement, spreading the environment-friendly color anti-skid pavement adhesive by using a rubber scraper (the width of saw teeth is 2mm, and the depth of the saw teeth is 3mm) with saw teeth, and waiting for the environment-friendly color anti-skid pavement adhesive to automatically flow to be completely flat;
5) spreading color ceramic particles with the particle size of 1-3mm from top to bottom until the color ceramic particles completely cover the environment-friendly color anti-skid pavement adhesive;
6) after the environment-friendly color anti-skid pavement adhesive is completely solidified (more than or equal to 24 hours), sweeping the color ceramic particles which are not completely bonded on the surface by using a broom, and uniformly sweeping by using a pavement sweeping tool;
7) after the surplus aggregate is collected, mixing the components A and B of the environment-friendly color anti-skid pavement surface protective agent according to the mass ratio of 1.5:2, adding water to adjust the viscosity of the whole surface protective agent, and spraying the surface protective agent on the pavement surface by a spraying machine;
8) within 5min after the surface layer protective agent is sprayed, fluorescent powder is spread by a distribution sieve, and the spreading amount is 1kg/m2And after the pavement is dried, the self-luminous environment-friendly color antiskid pavement can be prepared.
The performance evaluation of the prepared environment-friendly color anti-skid pavement adhesive comprises the following steps:
1) a part of the prepared environment-friendly color antiskid pavement adhesive is reserved for mechanical property testing, and the rest is prepared into a wet wheel abrasion test piece.
2) In order to better test the service life of the color anti-skid pavement prepared from different materials, the invention adopts an accelerated loading fatigue tester to test, a prototype AC-13 asphalt mixture test piece is manufactured, the thickness of the test piece is 5cm, then the color anti-skid pavement is paved on the surface layer of the test piece according to the color anti-skid pavement construction method, and the redundant ceramic particles on the surface are cleaned after the maintenance at room temperature. Weighing mass m of test block on unpaved color antiskid road surface0Paving a colorful antiskid pavement and collecting the mass m of the test block after the excessive aggregate is collected1After the accelerated loading fatigue test is finished, cleaning the redundant ceramic particles and waste materials suspended on the surface, and weighing the mass m of the test piece again2And the fatigue resistance of the colored antiskid pavement is measured according to the mass loss proportion.
Fatigue resistance p ═ m1-m2)/(m1-m0)*100％
3) And (3) testing environmental protection performance: the environmental protection performance of the material is evaluated by testing the content of VOCs in the adhesive;
4) and (3) testing the storage stability of the emulsion: observing test layering conditions after centrifuging at 3000rpm for 30 min;
5) and (3) viscosity testing: investigating the flow property of the mixed adhesive for investigating the actual construction performance;
6) curing time: the method is used for inspecting the construction closing time and measuring the open traffic time in the actual construction process;
7) and (3) testing mechanical properties: the method is used for evaluating the mechanical property and the shrinkage rate of the material.
Comparative example 1:
conventional waterborne epoxy adhesives: the paint is prepared from a water-based epoxy resin emulsion (Wuhanshi Quanxing new material science and technology Co., Ltd.) and a water-based epoxy resin curing agent (Shandong Haoyao new material Co., Ltd.) in a mass ratio of 1:1, 5 wt% of pigment is added, a part is reserved after the paint is uniformly stirred for mechanical property test, and the rest is prepared into a wet wheel abrasion test piece. No phosphor was scattered. The performance test method was the same as in example 1.
Comparative example 2:
polyurethane adhesive: prepared from 3070 resin (Henan Si Deg chemical engineering Co., Ltd.) and MDI-50 curing agent (Wanhua chemical group Co., Ltd.) in a ratio of 4:1, 5 wt% of pigment is added, a part is left after stirring uniformly for mechanical property test, and the rest is prepared into a wet wheel abrasion test piece. No phosphor was scattered. The performance test method was the same as in example 1.
Comparative example 3:
MMA adhesive: the test piece is prepared from MMA resin (Taiyuan Chengni science and technology Limited) and dibenzoyl peroxide initiator in a mass ratio of 100:2, 5 wt% of pigment is added, a part of the mixture is left after uniform stirring for mechanical property test, and the rest of the mixture is prepared into a wet wheel abrasion test piece. No phosphor was scattered. The performance test method was the same as in example 1.
The results of the above performance tests are shown in the following table, with the test methods referenced to the relevant standards.
The results of experiments show that the performance of the environment-friendly color anti-skid pavement material prepared by the invention is superior to that of the conventional waterborne epoxy resin and polyurethane on the whole, the fatigue resistance is inferior to that of MMA, but the environmental performance is superior to that of MMA.
The environment-friendly color anti-skid pavement added with the surface layer protective agent is remarkably improved in water loss resistance and fatigue test performance, and a sandwich structure is mainly formed by the environment-friendly color adhesive, the ceramic particles and the surface layer protective agent, so that the ceramic particles have better embeddability and better abrasion resistance. The application of the fluorescent stone or the fluorescent powder effectively improves the night visual effect of the colored anti-skid road surface, provides higher safety indication for the colored anti-skid road surface in rainy days and at night, and is beneficial to being applied to areas and places without lamplight and needing safety warning. The wet wheel abrasion and accelerated loading performance are poorer than those of the wet wheel abrasion and accelerated loading performance due to the fact that the addition of the fluorescent powder can improve the local uniformity of a paint film of the surface layer protective agent and cause the paint film to be poor in uniformity and the abrasion resistance performance to be attenuated.
Claims (5)
1. A preparation method of an environment-friendly color anti-skid pavement capable of self-luminescence is characterized by comprising the following specific steps:
1) cleaning and sweeping the constructed pavement, wherein the constructed ground needs to be clean, free of oil stain, pulverization, clear water and floating ash; repairing the damaged part of the base surface by using epoxy mortar, wherein the surface of the concrete needs to be clean, dry and firm;
2) mixing 100 parts by mass of an environment-friendly color anti-skid pavement adhesive A component, 150 parts by mass of an environment-friendly color anti-skid pavement adhesive B component, 100 parts by mass of tap water and 10 parts by mass of pigment, stirring at the rotating speed of 1000 plus 1500rpm for 3-5min, 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-skid pavement adhesive; curing for more than 24 hours, cleaning the color ceramic particles which are not completely bonded on the surface by using a broom, and blowing by using a road surface blowing tool;
3) uniformly mixing the component A of the environment-friendly color antiskid pavement surface layer protective agent and the component B of the environment-friendly color antiskid 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; uniformly throwing noctilucent stones or fluorescent powder with the particle size of 1-2mm by manual spreading or distribution sieve within 3-5min after spraying, wherein the spreading amount of the noctilucent stones is 1-2kg/m2The spraying amount of the fluorescent powder is 0.5-1kg/m2After the road surface is completely dried, the self-luminous environment-friendly color antiskid road surface can be obtained.
2. The preparation method according to claim 1, wherein the component A of the environment-friendly color anti-skid pavement adhesive is prepared by the following steps:
1) drying oleum ricini, polyethylene glycol 2000, dimethyl carbonate, and 4,4' -dicyclohexylmethane diisocyanate in vacuum oven at 40 deg.C to remove water, and placing in CaCl2The dryer (2) is placed for 72 hours at the temperature of 25 ℃;
2) dissolving a mixture of castor oil 10 parts by mole and polyethylene glycol 2000 10 parts by mole in dimethyl carbonate 30 parts by mole, stirring at 45 deg.C until completely dissolved, and adding N2Heating to 70 ℃ under protection, mechanically stirring at 3000rpm for 3h, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet and is used for collecting the evaporated dimethyl carbonate;
3) weighing 20 parts by molar weight of 4,4 '-dicyclohexylmethane diisocyanate, slowly dropwise adding the 4,4' -dicyclohexylmethane diisocyanate into the reaction mixture obtained in the step 2), keeping the reaction conditions unchanged after dropwise adding, and continuously reacting for 3 hours to obtain a reaction product I;
4) weighing 15 parts of hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester, placing the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester into a reactor, adding boron trifluoride diethyl etherate under the conditions of nitrogen protection, reaction temperature of 70 ℃ and stirring speed of 1500rpm, wherein the addition amount of the boron trifluoride diethyl etherate is 0.5 wt% of the hydrogenated bisphenol A epoxy resin or hexahydrophthalic acid diglycidyl ester, stirring uniformly, slowly dropwise adding a reaction product I for 3 hours, and continuously stirring for reaction for 2 hours after dropwise adding to obtain a reaction product II;
5) heating the reaction product to 80 ℃ and stopping introducing N2In N at2A 5 ℃ condensation recovery device at an outlet is connected with a vacuum pump, and the vacuum pump is used for carrying out vacuum pumping treatment at a constant temperature and a constant speed at a stirring speed of 3000rpm until no bubbles are generated to obtain a light yellow transparent viscous liquid substance as a reaction product (c);
6) adding 85 parts of bisphenol A epoxy resin E51 into the reaction product III, adjusting the reaction temperature to 60 ℃, adjusting the stirring speed to 3000rpm, removing the vacuumizing device, communicating the whole reaction equipment with the atmosphere, slowly dripping deionized water for 30min-2h, keeping the temperature and the stirring speed after dripping, and continuously reacting for 30min to obtain a modified epoxy resin emulsion with the solid content of 50 wt%;
7) and (3) adding a stabilizer and a flatting agent with the mass fraction of 0.5 percent into the modified epoxy resin emulsion obtained in the step 6), and continuing stirring for 15min to obtain homogeneous milky emulsion, namely the component A of the environment-friendly color anti-skid pavement adhesive.
3. The preparation method according to claim 1, wherein the preparation step of the B component of the environment-friendly color anti-skid pavement adhesive comprises the following steps:
1) weighing 70 parts by mole of methylcyclopentanediamine and 10 parts by mole of polyetheramine, heating to 60 ℃, stirring and mixing uniformly, and introducing nitrogen for protection;
2) slowly dripping 80 parts of tetrahydrophthalic acid diglycidyl ester with the molar weight into the reactor in the step 1), and continuing to stir at 60 ℃ for 12 hours at the stirring speed of 1500rpm until the mixture becomes brown yellow viscous liquid;
3) slowly dripping 20 parts of hexanediol diglycidyl ether with the molar weight into the product obtained in the step 2), and continuing to stir at 60 ℃ for 8 hours at the stirring speed of 1500rpm after finishing dripping;
4) keeping the temperature and the rotating speed unchanged, slowly dripping deionized water into the product obtained in the step 3) to prepare brown yellow homogeneous liquid with the solid content of 50 wt%, and continuously stirring until no foaming and no wire drawing phenomenon are caused after the dripping is finished, thus obtaining the component B of the environment-friendly color anti-skid pavement adhesive.
4. The preparation method according to claim 1, wherein the preparation of the component A of the environment-friendly color antiskid pavement surface layer protective agent comprises the following steps:
1) drying oleum ricini, trimethylolpropane, dimethyl carbonate, HMDI, hydroxyethyl methacrylate and bis-hydroxymethyl butyric acid in vacuum oven at 40 deg.C to remove water, and placing in CaCl2The dryer (2) is placed for 72 hours at the temperature of 25 ℃;
2) putting 60 parts of HMDI (high molecular weight polyethylene) in a reactor, adjusting the reaction temperature to 70-75 ℃, stirring at 1500rpm, and introducing N2Protection, N2A condensation recovery device with the temperature of 5 ℃ is arranged at an outlet, then a dimethyl carbonate solution in which 3 parts by mole of trimethylolpropane and 7 parts by mole of castor oil are dissolved is slowly dripped, and the reaction is continued for 1 hour after the dripping is finished;
3) adjusting the reaction temperature to 60 ℃, dropwise adding 18 parts of hydroxyethyl methacrylate into the reactor in the step 2), wherein the dropwise adding time is 1h, and the stirring speed is 3000 rpm;
4) further reducing the reaction temperature to 40 ℃, keeping the stirring speed unchanged, adding potassium persulfate into the product obtained in the step 3), slowly dropwise adding 54 parts of MMA monomer in a molar amount for 1h, and rapidly adding phenol after the dropwise adding is completed, wherein the addition amount of the phenol is 0.5% of the mass of the MMA;
5) adjusting the stirring speed to 3000rpm, adjusting the reaction temperature to 60 ℃, dropwise adding 8 parts by mole of bis (hydroxymethyl) butyric acid into the product obtained in the step 4), continuing to react for 1h after dropwise adding is finished, then adding 8 parts by mole of triethylamine at one time, stirring for 30min, and removing the redundant dimethyl carbonate solvent in the reactant by a vacuum-pumping heating mode until no bubbles are generated in the viscous liquid;
6) deionized water is added to adjust the solid content to be 50 wt%, and the mixture is stirred uniformly after a defoaming agent is added, so that the component A of the environment-friendly color pavement surface layer protective agent is obtained.
5. The preparation method of claim 1, wherein the step of preparing the component B of the environment-friendly color pavement surface protective agent comprises the following steps:
1) placing 40 parts by molar weight of hexahydrophthalic acid diglycidyl ester into a reactor, adjusting the reaction temperature to 60 ℃, stirring at 1500rpm, introducing nitrogen for protection, and dropwise adding 15 parts by molar weight of polyetheramine D400 to obtain an epoxy resin prepolymer;
2) weighing 50 parts of castor oil by molar weight, adding boron trifluoride diethyl etherate, wherein the mass of the boron trifluoride diethyl etherate is 0.5 percent of that of the castor oil, uniformly stirring, adjusting the reaction temperature to 60 ℃, introducing nitrogen for protection, and adjusting the stirring speed to 1500 rpm;
3) slowly dripping the epoxy resin prepolymer prepared in the step 1) into the mixture in the step 2), wherein the dripping time is 2h, stirring and reacting for 6h at 60 ℃, the stirring speed is 1500rpm, and dripping DMC to adjust the viscosity of the product;
4) keeping the reaction temperature and the stirring speed unchanged, dropwise adding 20 parts of HMDI (dimethyl formamide) subjected to DMPA (dimethyl formamide) grafting modification into the product obtained in the step 3), and continuing to react for 1h after the dropwise addition is finished;
5) keeping the temperature and the rotating speed unchanged, adding 20 parts by mole of triethanolamine to neutralize the product obtained in the step 4), vacuumizing to remove redundant DMC until no bubbles are generated in the reactant liquid, slowly dropwise adding deionized water to prepare a dispersion liquid with the solid content of 50 wt%, and continuously stirring after dropwise adding until no foaming or wire drawing phenomenon occurs, thus obtaining the component B of the environment-friendly color pavement surface layer protective agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114891386A (en) * | 2022-06-28 | 2022-08-12 | 中国科学院兰州化学物理研究所 | Antiskid and luminous water-based road sign paint and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114891386A (en) * | 2022-06-28 | 2022-08-12 | 中国科学院兰州化学物理研究所 | Antiskid and luminous water-based road sign paint and preparation method and application thereof |
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Application publication date: 20210528 |