CN111635688A - Environment-friendly hot-melt marking paint and preparation method thereof - Google Patents

Environment-friendly hot-melt marking paint and preparation method thereof Download PDF

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Publication number
CN111635688A
CN111635688A CN202010468514.5A CN202010468514A CN111635688A CN 111635688 A CN111635688 A CN 111635688A CN 202010468514 A CN202010468514 A CN 202010468514A CN 111635688 A CN111635688 A CN 111635688A
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parts
petroleum resin
environment
marking paint
friendly hot
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杨三强
马鹏蕊
赵柯吉
申新蕊
穆海峰
闪金龙
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D157/00—Coating compositions based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09D157/02—Copolymers of mineral oil hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/004—Reflecting paints; Signal paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/45—Anti-settling agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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Abstract

The invention discloses an environment-friendly hot-melt marking paint and a preparation method thereof, belonging to the technical field of environment-friendly hot-melt marking paints. The environment-friendly hot-melt marking paint is prepared from the following raw materials in parts by weight: 13-15 parts of modified C5 petroleum resin, 6-8 parts of pigment, 27-29 parts of quartz sand, 26-28 parts of ground calcium carbonate, 1-3 parts of castor oil, 2-4 parts of polyethylene wax, 1-3 parts of powdered nitrile rubber and 20-23 parts of glass beads. The invention also discloses a preparation method of the environment-friendly hot-melt marking paint. The environment-friendly hot-melt marking paint disclosed by the invention has the advantages of good fluidity, high compressive strength, short drying time, high softening point, good flexibility, water resistance, acid and alkali resistance, good light reflecting performance and the like.

Description

Environment-friendly hot-melt marking paint and preparation method thereof
Technical Field
The invention relates to an environment-friendly hot-melt marking paint and a preparation method thereof, belonging to the technical field of hot-melt marking paints.
Background
The road performance of the road traffic marking material not only affects the road maintenance and maintenance cost, but also directly affects the traffic safety. The road marking paint on the market can be generally divided into two categories of solvent type and hot melt type. The solvent-based marking paint releases a large amount of solvent in the using process, so that the environment is polluted, the drying time of a paint film is long, the wear resistance is poor, and the paint film can only be kept for about 3 months generally. The hot-melt type marking paint has the characteristics of excellent durability, quick drying property, good night visibility, no solvent and the like, so that the hot-melt type marking paint receives wide attention since the coming of the world and the using amount of the hot-melt type marking paint is increased year by year.
With the rapid development of road traffic in China, the problems that the road performance of the hot-melt road marking paint does not reach the standard and the environment is polluted are increasingly prominent. At present, the research measures at home and abroad aiming at the problems are to add soybean oil, epoxidized soybean oil and the like to replace phthalate, but the pollution is reduced, and simultaneously the softening point and the compressive strength of the coating are greatly reduced. In addition, talcum powder and light calcium carbonate are added into the filler or EVA, a flatting agent, an anti-settling agent and the like are added into the paint to improve various performances of the paint, but the effects are not obvious, and the talcum powder and the light calcium carbonate can influence another performance while improving one performance of the marking paint so that the marking paint does not reach the standard. Therefore, the development of experimental research and performance analysis of the environment-friendly hot-melt marking paint is of great significance.
In summary, the current hot-melt type marking paint still has the following problems: serious pollution, and performance indexes such as crack resistance, compressive strength, fluidity and the like which do not reach the standard. Therefore, it is desired to provide an environment-friendly hot-melt marking paint to solve the problems of the prior art.
Disclosure of Invention
The invention aims to provide an environment-friendly hot-melt marking paint. The environment-friendly hot-melt marking paint disclosed by the invention has the advantages of good fluidity, high compressive strength, short drying time, high softening point, good flexibility, water resistance, acid and alkali resistance, good light reflecting performance and the like.
The technical scheme for solving the technical problems is as follows: an environment-friendly hot-melt marking paint is prepared from the following raw materials in parts by weight: 13-15 parts of modified C5 petroleum resin, 6-8 parts of pigment, 27-29 parts of quartz sand, 26-28 parts of ground calcium carbonate, 1-3 parts of castor oil, 2-4 parts of polyethylene wax, 1-3 parts of powdered nitrile rubber and 20-23 parts of glass beads.
The principle of the environment-friendly hot-melt marking paint is as follows:
first, C5 Petroleum resin
The C5 petroleum resin is a solid polymer resin prepared from C5 fraction as main raw material. The C5 fraction is a by-product of ethylene production by petroleum cracking. The C5 fraction is relatively complex and contains a wide variety of diolefins, monoolefins, alkanes, and the like, with the more abundant olefinic components being isoprene, piperylene, cyclopentadiene, 1-pentene (including cis and trans), 2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene.
The C5 petroleum resin has the following advantages: the adhesive has the advantages of high peel adhesion strength, good quick adhesion, stable adhesion performance, moderate melt viscosity, good heat resistance, good compatibility with a high polymer matrix, good adhesive force to concrete or asphalt pavement, good wear resistance and water resistance, good affinity with inorganic matters, easy coating, good weather resistance, quick drying and high firmness.
If the C5 petroleum resin is directly used for preparing the environment-friendly hot melt marking paint, the following defects exist: although the C5 petroleum resin has the characteristics of water resistance, heat resistance, strong bonding force, corrosion resistance, insulation and the like, the C5 petroleum resin has the defects of low softening point, easy crystallization, large brittleness and the like, and can not meet the requirement of the road marking paint on the thermoplastic resin.
Therefore, the invention modifies the C5 petroleum resin, and the maleic anhydride and the powdered nitrile rubber are mixed in the C5 petroleum resin, and the invention has the following advantages: good toughness, high softening point, light color, good chemical stability and the like.
Second point, pigment
Pigments are powdery substances used for coloring. It is insoluble in a medium such as water, fats and oils, resins, and organic solvents, but can be uniformly dispersed in the medium to color the medium. Pigments impart color, hiding power, tinting strength, increase mechanical strength, have properties of media resistance, light resistance, weather resistance, and heat resistance, and are commonly used in formulating paints, inks, and colored plastics and rubbers, and thus may also be referred to as colorants or colored pigments. Pigments are classified into two major classes, inorganic pigments and organic pigments, and organic pigments are superior to inorganic pigments in terms of tinting strength, vividness and decorative effect, but inferior to inorganic pigments in terms of weather resistance, heat resistance and light resistance. In turn, their sources can be divided into natural pigments and synthetic pigments. From the viewpoint of application, they are classified into pigments for paints, pigments for inks, pigments for plastics, pigments for rubbers, pigments for ceramics and enamels, pigments for pharmaceuticals and cosmetics, and pigments for art. The road marking paint mainly comprises white pigment and yellow pigment, and the colored anti-skid road material is usually red, orange, yellow, green, blue and other various bright colors. The pigment should have the requirements of high temperature resistance, strong covering power, bright color and the like.
Third, the quartz sand
The quartz sand is powder formed by grinding natural stone ore, is a mixture of two structural forms of a sheet structure and a fiber structure, the fiber structure can increase the flexibility of the coating, the sheet structure can improve the shielding effect of the coating, and the quartz sand can improve the construction performance of the coating so that the coating has good leveling property.
Fourth, heavy calcium carbonate
The heavy calcium carbonate can greatly improve the thixotropy of a system, can obviously improve the adhesion, the washing resistance and the stain resistance of the environment-friendly hot-melt marking paint, improves the strength and the surface smoothness, has good anti-settling effect, can replace part of titanium dioxide, and reduces the cost. In addition, the heavy calcium carbonate is used as a coating filler and has the advantages of fineness, uniformity, high whiteness, good optical performance and the like. In addition, the calcium carbonate is white in color, is cheap relative to raw materials such as latex and the like, has fine particles, can be uniformly dispersed in the environment-friendly hot melt marking paint, and is an extender pigment used in large quantity.
Fifth point, castor oil
Castor oil is a plasticizer which, when added to polymeric systems, increases their plasticity, flexibility or swellability. The plasticizer is added into the environment-friendly hot-melt marking paint, so that the effect of improving the brittleness, the cracking and the like of the paint is better, and the impact strength and the elongation of the paint can be improved. According to the environment-friendly hot-melt marking paint, the castor oil is used as a plasticizer instead of phthalate and other chemical agents, so that the pollution of the environment-friendly hot-melt marking paint can be reduced, and the environment-friendly hot-melt marking paint is more environment-friendly.
Sixth, polyethylene wax
The polyethylene wax has excellent cold resistance, heat resistance, chemical resistance and wear resistance, and also has good anti-settling effect, so that the environment-friendly hot melt marking coating has good luster and stereoscopic impression.
Seventh, glass beads
The glass beads are a reflective material, are colorless transparent spheres and have the functions of refracting, focusing and directionally reflecting light. The reflective effect of the hot melt marking paint is derived from glass beads pre-mixed in the paint and glass beads scattered on the surface of the coating, and if the glass beads have a high rounding rate (90%), a high refractive index (1.93) and a reasonable particle size distribution (20-80 meshes), the reflective effect of the marking is good. The grain size of the glass beads is graded according to a certain proportion so as to ensure that the glass beads in the marking coating are firmly adhered. In the use process, the glass beads with different sizes are sequentially exposed and fall off along with the abrasion of the marking line, so that the marking line can continuously reflect light.
In conclusion, the environment-friendly hot-melt marking paint disclosed by the invention adopts the raw materials and is matched with the raw materials in corresponding parts by weight, and the obtained environment-friendly hot-melt marking paint has the following advantages: good fluidity, high compressive strength, short drying time, high softening point, good flexibility, water resistance, acid and alkali resistance and good light reflection performance
The environment-friendly hot-melt marking paint has the beneficial effects that:
1. the environment-friendly hot melt marking paint disclosed by the invention is good in fluidity (the average value of fluidity is 36.3s), high in compressive strength (the average value of compressive strength is 19.731MPa), short in drying time (the average value is 2.75min), high in softening point (the average value is 112 ℃), water-resistant (meeting the requirements), alkali-resistant (meeting the requirements) and good in light reflection performance (the average value is 302.8 mcd. lx)-1·m-2)。
2. According to the invention, the castor oil is used as a plasticizer instead of phthalate and other chemical agents, and the powdery nitrile rubber is added, so that the cyclic utilization of rubber powder and other wastes is realized, the pollution of the hot-melt marking coating is reduced, and the coating is more environment-friendly.
3. After the environment-friendly hot-melt marking paint is used for marking a road, the abrasion (the abrasion resistance is 19.7mg) can be reduced, and the service life of the road marking is effectively prolonged by 4-12 months.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the feed is prepared from the following raw materials in parts by weight: 14 parts of modified C5 petroleum resin, 7 parts of pigment, 28 parts of quartz sand, 27 parts of ground calcium carbonate, 2 parts of castor oil, 3 parts of polyethylene wax, 2 parts of powdered nitrile rubber and 22 parts of glass beads.
The adoption of the further beneficial effects is as follows: the above formula is the best formula, and the performance parameters of the obtained environment-friendly hot-melt marking paint are the best.
Further, the modified C5 petroleum resin is prepared by the following method:
step 1.1: weighing the following raw materials in parts by weight: 100 parts of C5 petroleum resin, 12-15 parts of maleic anhydride and 15-17 parts of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1.1 and accounting for 60-65% of the weight to 150-155 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 1.2, slowly adding the maleic anhydride weighed in the step 1.1 while stirring at the temperature of 150-155 ℃, and stirring for 1-2 h to obtain maleic C5 petroleum resin;
step 1.4: adding the powdered nitrile-butadiene rubber weighed in the step 1.1 into the maleic C5 petroleum resin obtained in the step 1.3 at the temperature of 195-200 ℃, heating to the temperature of 270-275 ℃, reacting for 6-8 h, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin.
The adoption of the further beneficial effects is as follows: the C5 petroleum resin is modified by doping maleic anhydride and powdered nitrile rubber into the C5 petroleum resin, so that the modified petroleum resin has the properties of good toughness, high softening point, light color, good chemical stability and the like. The specific principle is as follows:
the synthesis of the modified C5 petroleum resin was carried out in a two-step reaction. Firstly, C5 petroleum resin reacts with maleic anhydride to generate maleic C5 petroleum resin, belongs to Diels-Alder reaction (namely diene synthesis reaction), and is used for modifying double bonds in C5 petroleum resin. Compared with C5 petroleum resin, the maleic C5 petroleum resin has higher molecular functionality, higher softening point, higher acid value and the like. The double bond carbon of the maleic anhydride has two electron-withdrawing carbonyl groups, so that the maleic anhydride and the C5 petroleum resin can smoothly react under the heating condition without any catalyst. Secondly, the reaction of the maleic C5 petroleum resin and the powdered nitrile rubber generates modified C5 petroleum resin, the reaction belongs to polyesterification reaction, the acid value of the maleic C5 petroleum resin can be reduced through esterification, the toughness and the softening point of the maleic C5 petroleum resin are improved, and the stability of the maleic C5 petroleum resin is improved. The carboxyl of the C5 petroleum resin is located on a tertiary carbon atom, the steric hindrance is large, the activation energy is high, and therefore the polyesterification reaction is harsh, and high temperature and long time are required. The reaction temperature of the C5 petroleum resin and the powdered nitrile-butadiene rubber is controlled to be above the melting point of the C5 petroleum resin (195 ℃ -200 ℃).
The nitrile rubber is a rubber material obtained by emulsion copolymerization of acrylonitrile and butadiene, and is mainly divided into liquid nitrile rubber and solid nitrile rubber. The solid nitrile rubber is divided into blocks and powder according to different purposes. Because the powdery nitrile rubber has small grain diameter and good dispersibility when being blended with other resins, the powdery nitrile rubber can be directly processed by a plastic processing technology, and is beneficial to the continuity and automation of the time processing process.
Furthermore, the powder particle size of the powder nitrile rubber is 0.58mm-0.6mm, the mass percentage content of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
The adoption of the further beneficial effects is as follows: the powdery nitrile rubber has excellent compatibility with C5 petroleum resin by adopting the parameters, and the impact strength, elastic recovery and wear resistance of the C5 petroleum resin can be improved by modifying the C5 petroleum resin, so that the environment-friendly hot melt marking paint with excellent performance is obtained.
The powdered nitrile rubber is commercially available, such as 25kg of powdered nitrile rubber available from Hebei Dada traffic science and technology Limited.
Further, the pigment is chrome yellow or titanium dioxide.
The adoption of the further beneficial effects is as follows: titanium dioxide, a white solid or powdered amphoteric oxide, is a white inorganic pigment having no toxicity, optimal opacity, optimal whiteness and brightness, and is considered to be the best white pigment in the world today. The titanium white has strong adhesive force, is not easy to chemically change and is snow white forever. Chrome yellow has high tinting strength and covering power and can not be pulverized in the atmosphere. The paint prepared by adopting the two pigments can meet the requirements of high temperature resistance, strong covering power, bright color and the like.
Further, the molecular weight of the polyethylene wax is 2000-3000.
The adoption of the further beneficial effects is as follows: the polyethylene wax has excellent cold resistance, heat resistance, chemical resistance and wear resistance, and also has good anti-settling effect, so that the environment-friendly hot-melt marking paint has good luster and stereoscopic impression.
The polyethylene wax can be purchased commercially, such as from Hebei Dada traffic science and technology Limited.
The second purpose of the invention is to provide a preparation method of the environment-friendly hot-melt marking paint. The preparation method of the environment-friendly hot-melt marking paint is simple, easy to operate, low in cost, wide in market prospect and suitable for large-scale popularization and application.
The technical scheme for solving the technical problems is as follows: a preparation method of an environment-friendly hot-melt marking paint comprises the following steps:
step 1: preparation of modified C5 Petroleum resin
Step 1.1: weighing the following raw materials in parts by weight: 100 parts of C5 petroleum resin, 12-15 parts of maleic anhydride and 15-17 parts of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1.1 and accounting for 60-65% of the weight to 150-155 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 1.2, slowly adding the maleic anhydride weighed in the step 1.1 while stirring at the temperature of 150-155 ℃, and stirring for 1-2 h to obtain maleic C5 petroleum resin;
step 1.4: adding the powdered nitrile-butadiene rubber weighed in the step 1.1 into the maleic C5 petroleum resin obtained in the step 1.3 at the temperature of 195-200 ℃, heating to the temperature of 270-275 ℃, reacting for 6-8 h, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin;
step 2: preparing a first mixture
Weighing the following raw materials in parts by weight: 13-15 parts of modified C5 petroleum resin obtained in the step 1, 6-8 parts of pigment, 27-29 parts of quartz sand, 26-28 parts of heavy calcium carbonate, 1-3 parts of castor oil, 2-4 parts of polyethylene wax, 1-3 parts of powdered nitrile rubber and 20-23 parts of glass beads, and uniformly mixing the modified C5 petroleum resin, titanium dioxide, quartz sand, heavy calcium carbonate, polyethylene wax, powdered nitrile rubber and glass beads to obtain a first mixture;
and step 3: preparing the second mixture
Adding the castor oil weighed in the step 2 into the first mixture obtained in the step 2, and uniformly mixing to obtain a second mixture;
and 4, step 4: preparation of environment-friendly hot-melt marking paint
And (3) keeping the heating temperature at 195-200 ℃, and cooling to form a film at normal temperature after the second mixture in the step (3) is completely melted, so as to obtain the environment-friendly hot-melt marking paint.
The preparation method of the environment-friendly hot-melt marking paint has the beneficial effects that:
the preparation method of the environment-friendly hot-melt marking paint disclosed by the invention is simple to operate, low in cost, wide in market prospect and suitable for large-scale popularization and application.
On the basis of the technical scheme, the invention can be further improved as follows
Further, in the step 1.1 and the step 2, the powder particle size of the powder nitrile rubber is 0.58mm-0.6mm, wherein the mass percentage of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
The adoption of the further beneficial effects is as follows: the powdery nitrile rubber has excellent compatibility with C5 petroleum resin by adopting the parameters, and the impact strength, elastic recovery and wear resistance of the C5 petroleum resin can be improved by modifying the C5 petroleum resin, so that the environment-friendly hot melt marking paint with excellent performance is obtained.
The powdered nitrile rubber is commercially available, such as 25kg of powdered nitrile rubber available from Hebei Dada traffic science and technology Limited.
Further, in the step 2, the pigment is chrome yellow or titanium dioxide.
The adoption of the further beneficial effects is as follows: titanium dioxide, a white solid or powdered amphoteric oxide, is a white inorganic pigment having no toxicity, optimal opacity, optimal whiteness and brightness, and is considered to be the best white pigment in the world today. The titanium white has strong adhesive force, is not easy to chemically change and is snow white forever. Chrome yellow has high tinting strength and covering power and can not be pulverized in the atmosphere. The paint prepared by adopting the two pigments can meet the requirements of high temperature resistance, strong covering power, bright color and the like.
Further, in step 2, the molecular weight of the polyethylene wax is 2000-3000.
The adoption of the further beneficial effects is as follows: the polyethylene wax has excellent cold resistance, heat resistance, chemical resistance and wear resistance, and also has good anti-settling effect, so that the environment-friendly hot-melt marking paint has good luster and stereoscopic impression.
The polyethylene wax can be purchased commercially, such as from Hebei Dada traffic technology Co.
The use method of the environment-friendly hot-melt marking paint comprises the following steps:
step 1: putting the environment-friendly hot-melt marking paint into a melting kettle, and melting the paint into a molten flowing state;
step 2: putting the environment-friendly hot-melt marking paint in the molten flowing state in the step 1 into a heat-preservation melting hopper of the hand-push type marking vehicle, and then introducing the environment-friendly hot-melt marking paint into the marking hopper, and preserving heat to keep the environment-friendly hot-melt marking paint in a molten state;
and step 3: the marking bucket is placed on the road surface, the marking vehicle is pushed, and the marking lines are scraped by automatic flowing.
Detailed Description
The principles and features of this invention are described below in conjunction with specific embodiments, which are set forth merely to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
The environment-friendly hot-melt marking paint is prepared from the following raw materials in parts by weight: 13kg of modified C5 petroleum resin, 8kg of chrome yellow, 27kg of quartz sand, 28kg of heavy calcium carbonate, 1kg of castor oil, 4kg of polyethylene wax, 1kg of powdered nitrile rubber and 23kg of glass beads.
Wherein the modified C5 petroleum resin is prepared by the following method:
step 1.1: weighing the following raw materials by weight: 100kg of C5 petroleum resin, 12kg of maleic anhydride and 17kg of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1 to 150 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 2, slowly adding the maleic anhydride weighed in the step 1 while stirring at 150 ℃, and stirring for 1-2 h to obtain maleic C5 petroleum resin;
step 1.4: and (3) adding the powdered nitrile-butadiene rubber weighed in the step (1) into the maleic C5 petroleum resin obtained in the step (3) at 195 ℃, heating to 270 ℃, reacting for 6 hours, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin.
The powder particle size of the powdery nitrile rubber is 0.58mm-0.6mm, the mass percentage content of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
The molecular weight of the polyethylene wax is 2000-3000. The polyethylene wax can be purchased commercially, such as from Hebei Dada traffic science and technology Limited.
The preparation method of the environment-friendly hot-melt marking paint comprises the following steps:
step 1: preparing modified C5 petroleum resin, as above;
step 2: preparing a first mixture
Weighing the following raw materials in parts by weight: 13kg of modified C5 petroleum resin, 8kg of chrome yellow, 27kg of quartz sand, 28kg of heavy calcium carbonate, 1kg of castor oil, 4kg of polyethylene wax, 1kg of powdered nitrile rubber and 23kg of glass beads, which are obtained in the step 1, and uniformly mixing the modified C5 petroleum resin, titanium dioxide, quartz sand, heavy calcium carbonate, polyethylene wax, powdered nitrile rubber and glass beads to obtain a first mixture;
and step 3: preparing the second mixture
Adding the castor oil weighed in the step 2 into the first mixture obtained in the step 2, and uniformly mixing to obtain a second mixture;
and 4, step 4: preparation of environment-friendly hot-melt marking paint
And (3) keeping the heating temperature at 195 ℃, and cooling to form a film at normal temperature after the second mixture in the step (3) is completely melted, so as to obtain the environment-friendly hot-melt marking paint.
Example 2
The environment-friendly hot-melt marking paint is prepared from the following raw materials in parts by weight: 14kg of modified C5 petroleum resin, 7kg of pigment, 28kg of quartz sand, 27kg of ground calcium carbonate, 2kg of castor oil, 3kg of polyethylene wax, 2kg of powdered nitrile rubber and 22kg of glass beads.
Wherein the modified C5 petroleum resin is prepared by the following method:
step 1.1: weighing the following raw materials by weight: 100kg of C5 petroleum resin, 13kg of maleic anhydride and 16kg of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1 and accounting for 62 percent of the weight to 152 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 2, slowly adding the maleic anhydride weighed in the step 1 while stirring at 152 ℃, and stirring for 1.5h to obtain maleic C5 petroleum resin;
step 1.4: and (3) adding the powdered nitrile-butadiene rubber weighed in the step (1) into the maleic C5 petroleum resin obtained in the step (3) at 198 ℃, heating to 272 ℃, reacting for 7 hours, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin.
The powder particle size of the powdery nitrile rubber is 0.58mm-0.6mm, the mass percentage content of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
The pigment is chrome yellow.
The molecular weight of the polyethylene wax is 2000-3000. The polyethylene wax can be purchased commercially, such as from Hebei Dada traffic science and technology Limited.
The preparation method of the environment-friendly hot-melt marking paint comprises the following steps:
step 1: preparing modified C5 petroleum resin, as above;
step 2: preparing a first mixture
Weighing the following raw materials in parts by weight: 14kg of modified C5 petroleum resin, 7kg of chrome yellow, 28kg of quartz sand, 27kg of ground calcium carbonate, 2kg of castor oil, 3kg of polyethylene wax, 2kg of powdered nitrile rubber and 22kg of glass beads, which are obtained in the step 1, and uniformly mixing the modified C5 petroleum resin, the chrome yellow, the quartz sand, the ground calcium carbonate, the polyethylene wax, the powdered nitrile rubber and the glass beads to obtain a first mixture;
and step 3: preparing the second mixture
Adding the castor oil weighed in the step 2 into the first mixture obtained in the step 2, and uniformly mixing to obtain a second mixture;
and 4, step 4: preparation of environment-friendly hot-melt marking paint
And (3) keeping the heating temperature at 198 ℃, and cooling to form a film at normal temperature after the second mixture in the step (3) is completely melted, thus obtaining the environment-friendly hot-melt marking paint.
Example 3
The environment-friendly hot-melt marking paint is prepared from the following raw materials in parts by weight: 15kg of modified C5 petroleum resin, 6kg of pigment, 29kg of quartz sand, 26kg of heavy calcium carbonate, 3kg of castor oil, 2kg of polyethylene wax, 3kg of powdered nitrile rubber and 20kg of glass beads.
Wherein the modified C5 petroleum resin is prepared by the following method:
step 1.1: weighing the following raw materials by weight: 100kg of C5 petroleum resin, 15kg of maleic anhydride and 15kg of powdered nitrile rubber;
step 1.2: heating 65 wt% of C5 petroleum resin weighed in the step 1 to 155 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 2, slowly adding the maleic anhydride weighed in the step 1 while stirring at 155 ℃, and stirring for 2 hours to obtain maleic C5 petroleum resin;
step 1.4: and (3) adding the powdered nitrile-butadiene rubber weighed in the step (1) into the maleic C5 petroleum resin obtained in the step (3) at 200 ℃, heating to 275 ℃, reacting for 8 hours, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin.
The powder particle size of the powdery nitrile rubber is 0.58mm-0.6mm, the mass percentage content of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
The pigment is titanium dioxide.
The molecular weight of the polyethylene wax is 2000-3000. The polyethylene wax can be purchased commercially, such as from Hebei Dada traffic science and technology Limited.
The preparation method of the environment-friendly hot-melt marking paint comprises the following steps:
step 1: preparing modified C5 petroleum resin, as above;
step 2: preparing a first mixture
Weighing the following raw materials in parts by weight: 15kg of modified C5 petroleum resin obtained in the step 1, 6kg of titanium dioxide, 29kg of quartz sand, 26kg of ground calcium carbonate, 3kg of castor oil, 2kg of polyethylene wax, 3kg of powdered nitrile rubber and 20kg of glass beads, and uniformly mixing the modified C5 petroleum resin, the titanium dioxide, the quartz sand, the ground calcium carbonate, the polyethylene wax, the powdered nitrile rubber and the glass beads to obtain a first mixture;
and step 3: preparing the second mixture
Adding the castor oil weighed in the step 2 into the first mixture obtained in the step 2, and uniformly mixing to obtain a second mixture;
and 4, step 4: preparation of environment-friendly hot-melt marking paint
And (3) keeping the heating temperature at 200 ℃, and cooling to form a film at normal temperature after the second mixture in the step (3) is completely melted, so as to obtain the environment-friendly hot-melt marking paint.
Experimental example 1: test for compressive Strength
The hot melt type marking coating must have sufficient compressive strength to prevent deformation and cracking in order to withstand frequent rolling of various vehicles and high temperatures in summer. The compression strength of the environment-friendly hot-melt marking paint is mainly determined by a laboratory determination method.
According to the requirements of the national standard GB5768.3-2009 road traffic signs and marking of the people's republic of China, when the compressive strength of the hot-melt marking coating is at 230 +/-10 ℃, the compressive strength is more than or equal to 12 MPa; when the temperature is 500 +/-20 ℃, the compressive strength is more than or equal to 2 MPa. The test method according to JT/T280-2004 pavement marking paint is as follows: 3 coating compression-resistant test blocks of 20mm multiplied by 20mm are cast, and after the test blocks are placed for 24 hours at the standard test temperature, a compression test is carried out, the precision of an electronic universal material testing machine is not lower than 0.5 grade, the preload is 10N, and the loading speed is 30 mm/min. The standard specifies: the hot-melting common compression strength is more than or equal to 12 MPa.
The compression strength results of the environmentally friendly hot melt marking coatings prepared in examples 1 to 3 are shown in table 1.
TABLE 1 compression Strength test results of the environmentally friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000151
As can be seen from Table 1, the environmental-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the invention have the compression strength test values of more than or equal to 12MPa, the average compression strength of the test blocks is 19.731MPa, the requirements of the national standard GB5768.3-2009 road traffic signs and marking of the people's republic of China are met, and the compression resistance is good.
Experimental example 2: fluidity test
The fluidity is one of the construction technical indexes of the hot-melt marking paint, and the fluidity of the hot-melt marking paint during construction is evaluated to influence the convenience of construction. According to the requirements of the national standard GB5768.3-2009 road traffic signs and marking lines of the people's republic of China, the fluidity of the hot-melt road marking paint should meet 35s +/-10 s. The fluidity test method according to JT/T280-2004 pavement marking paint is as follows: heating the fluidity measuring cup to about 200 ℃ and keeping for 1h, namely adding the hot-melt coating into the hot-melt cup, placing the hot-melt cup on a heating furnace, heating the hot-melt coating to 180-200 ℃ in a stirring state for melting until the coating is melted to be in a construction state, so that the upper part and the lower part of the coating are completely uniform and consistent and have no bubbles. Immediately pouring the melted coating into a preheated fluidity measuring cup, opening an outflow opening and simultaneously pressing a stopwatch to record time; recording the time of the paint flow-off immediately when the paint flow-off is finished; the test is repeated for three times, and the average value of the test piece after the test piece is completely flowed is the fluidity.
The fluidity results of the environmentally friendly hot melt marking coatings prepared in examples 1-3 are shown in table 2.
Table 2 results of fluidity test of the environment-friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000161
As can be seen from Table 2, the fluidity of the environment-friendly hot melt marking paint prepared in the embodiments 1 to 3 of the invention is within the range of 35s +/-10 s, and the average value of the fluidity finally measured is 36.3s, so that the environment-friendly hot melt marking paint meets the national standard requirement and has good fluidity.
Experimental example 3: test of reflection Property
The reticle retroreflective brightness factor should be performed in a dry state during normal use. According to the requirements of JT/T690-2007 test method for luminosity performance of a counter reflector in the traffic industry standard of the people's republic of China, the coefficient of retroreflection luminosity of the hot-melt marked line is more than or equal to 200.
The results of the retroreflectivity coefficients of the environmentally friendly hot melt marked lines prepared in examples 1-3 of the present invention are shown in table 3.
TABLE 3 results of measuring coefficient of retroreflectivity of the environmentally friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000171
As can be seen from Table 3, the environmental-friendly hot melt marking coatings prepared in examples 1 to 3 of the present invention were found to have relatively stable retroreflectivity after 3 field tests, and the average value thereof was 302.8 mcd. lx-1·m-2The reflective coating meets the national standard requirements and has good reflective performance.
Experimental example 4: test of drying time of non-stick tire
According to the requirements specified by JT/T280-2004 road marking paint, the drying time of the non-sticky tire of the hot-melt marking paint is less than or equal to 3 min. The standard specified test methods are: a coating having a thickness of 300 μm was applied to a cement-asbestos board (200 mm. times.150 mm. times.50 mm), immediately counted, rolling over the coating was started using a tack-free time tester, the roller was checked for the presence of paint adhering thereto, and the paint was wiped off with a solvent. The test was repeated 1 time every 30 seconds until the roller did not stick to the coating, and the tack-free time was recorded.
The drying time of the non-stick tire of the environment-friendly hot melt marking coatings prepared in the embodiments 1 to 3 of the invention was respectively tested, and the test results are shown in table 4.
Table 4 results of testing drying time of non-stick tire of the environmentally friendly hot melt marking paint prepared in examples 1 to 3
Figure BDA0002513455610000181
As can be seen from Table 4, the environment-friendly hot melt marking paint prepared in the embodiments 1 to 3 of the invention has the advantages of short tire tack free time, average value of 2.75min, short used time, excellent performance and good road performance.
Experimental example 5: softening point test
The softening point is measured according to GB/T9284 "measuring method of softening point of base for color paint and varnish: ring and ball method". According to the requirements of JT/T280-2004 pavement marking paint, the softening points of the hot-melt common type and the hot-melt reflective type are 90-125 ℃; the softening point of the hot melting protrusion type is more than or equal to 100 ℃.
The softening points of the environment-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the present invention were respectively tested, and the test results are shown in table 5.
TABLE 5 softening point test results of the environmentally friendly hot melt marking coatings prepared in examples 1-3
Figure BDA0002513455610000191
As can be seen from Table 5, the environment-friendly hot melt marking coatings prepared in the embodiments 1 to 3 of the present invention have a high softening point, an average value of 112.0 ℃, meet the national standard requirements, and can be well applied to roads.
Experimental example 6: water resistance test
The water resistance of the hot-melt marking paint was measured in accordance with GB/T1733 "determination of Water resistance of coating film". According to JT/T280-2004 road marking paint: the abnormal phenomenon should not occur after soaking in water for 24 hours.
The water resistance of the hot-melt marked lines prepared in examples 1 to 3 of the present invention was measured, and the test results are shown in table 6.
TABLE 6 Water resistance test results of the eco-friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000192
As shown in Table 6, the environmental-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the present invention have no abnormal water resistance test results, have good water resistance, and meet the national standard requirements.
Experimental example 7: alkali resistance test
The alkali resistance of the hot-melt marking paint is measured according to GB/T9265 determination of alkali resistance of building paint coatings. According to JT/T280-2004 pavement marking paint: the calcium hydroxide saturated solution is soaked for 24 hours without abnormal phenomenon.
The alkali resistance of the environment-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the present invention was respectively tested, and the test results are shown in table 7.
TABLE 7 alkali resistance test results of the eco-friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000201
As can be seen from Table 7, the results of alkali resistance tests on the environment-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the present invention are all no abnormal, and the alkali resistance is good, so that the environment-friendly hot-melt marking coatings meet the requirements of national regulations.
Experimental example 8: abrasion resistance test
The abrasion resistance of the hot-melt marking paint is determined according to GB/T1768 & lt METHOD FOR MEASURING THE ABRASION RESISTANCE OF PAINT FILM ]. It is emphasized that the test conditions were specified for a 100-grit wheel, a load of 1000g, and a weight loss measurement after 200 revolutions. According to JT/T280-2004 pavement marking paint: the abrasion weight loss of the hot melt should be less than or equal to 80 mg.
The abrasion weight loss of the hot-melt marked lines prepared in examples 1 to 3 of the present invention was measured, respectively, and the test results are shown in table 8.
TABLE 8 abrasion resistance test results of the environmentally friendly hot melt marking coatings prepared in examples 1 to 3
Figure BDA0002513455610000211
As can be seen from Table 8, the average abrasion weight loss value of the environment-friendly hot-melt marking coatings prepared in the embodiments 1 to 3 of the invention is 19.7mg, the weight loss mass is small, the national standard requirements are met, and the wear resistance is good.
Experimental example 9: low temperature crack resistance test
The marking coating for hot-melt coating construction is thick (0.7-2.5 mm), and is easy to crack under low temperature conditions, so that low-temperature crack resistance detection is required. According to JT/T280-2004 pavement marking paint: the sample is kept at-10 ℃ for 4h and then is placed at room temperature for 4h, so that the sample is used as a cycle, and no crack exists after 3 cycles are continuously carried out.
The hot-melt marked lines prepared in examples 1 to 3 of the present invention were tested for low temperature crack resistance, respectively, and the test results are shown in table 9.
TABLE 9 test results of the environmentally friendly hot melt marking coatings prepared in examples 1-3
Figure BDA0002513455610000221
As can be seen from table 9, the environmental-friendly hot-melt marking coatings prepared in examples 1 to 3 of the present invention have good results in low-temperature crack resistance tests, have no cracks, meet the national standard requirements, have good low-temperature crack resistance, and are suitable for construction in northern severe cold regions.
Experimental example 10: weather resistance test
The test of the manually accelerated weathering resistance of hot-melt marking paints is based on GB/T16422.1 test for light exposure in the plastics laboratory. According to JT/T280-2004 pavement marking paint: after the manual accelerated weather resistance test, the coating does not crack or peel off; slight chalking and discoloration are allowed, and the luminance factor variation range should be not more than 20% as it is.
The marked line is tested after one year, 3 embodiments meet the requirements, obvious crack shedding is not generated, the brightness factor meets the national requirements, and the weather resistance test time is 12-20 months.
In summary, the environment-friendly hot-melt marking paint disclosed by the invention has the characteristics of good fluidity, high compressive strength, short drying time, high softening point, water resistance, alkali resistance, good light reflection performance and the like, and is a product capable of improving the material performance of a pavement marking and reducing the abrasion of the pavement marking. Secondly, after the environment-friendly hot-melt marking paint disclosed by the invention is used for marking a road, the service life of the road marking can be effectively prolonged. Thirdly, the environment-friendly hot-melt marking paint disclosed by the invention is suitable for northern weather, has good cold resistance and cannot be damaged in the cold weather. And fourthly, the environment-friendly hot-melt marking paint disclosed by the invention does not need large-scale equipment during construction, is simple and convenient to construct and easy to operate, can be used for traffic passing after marking of a worn road surface is finished, can be used for repairing the road surface marking at any time and any place, cannot damage the original road surface, and cannot influence the normal traffic. Therefore, the environment-friendly hot-melt marking coating has wider application prospect.
Comparative example
Different from the embodiment 2 of the invention, the hot melt marking paint admixture of the comparative example does not add the powder nitrile rubber and the castor oil, but adds the phthalate ester substance, and the rest is the same. The environment-friendly hot-melt marking paint prepared in example 2 and the hot-melt marking paint prepared in this comparative example were tested, and the test results are shown in table 10.
TABLE 10 test results
Figure BDA0002513455610000231
As can be seen from table 10, the compressive strength of the environment-friendly hot-melt marking paint prepared in example 2 is increased by 16% compared with the hot-melt marking paint prepared in the comparative example; the retroreflection coefficient is increased by 5%; the drying time of the non-stick tire is shortened by 14 percent; the softening point is improved by 17%; the wear resistance is reduced by 31 percent; the weather resistance is increased by 4-12 months; the fluidity, the water resistance, the alkali resistance and the low-temperature crack resistance all accord with the national standard.
Therefore, if the phthalate ester substance is used as the admixture to prepare the hot-melt marking paint, the following defects exist: environmental pollution, and poor performance indexes such as crack resistance, compressive strength and fluidity. The invention changes the admixture into the powdery nitrile rubber and the castor oil, thereby not only ensuring the environmental protection performance of the environment-friendly hot-melt marking paint, but also having the following advantages: the road surface marking has the advantages of good fluidity, high compressive strength, short drying time, high softening point, water resistance, alkali resistance and good light reflection performance, reduces the abrasion of the road surface marking, and prolongs the service life of the hot-melt marking.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The environment-friendly hot-melt marking paint is characterized by being prepared from the following raw materials in parts by weight: 13-15 parts of modified C5 petroleum resin, 6-8 parts of pigment, 27-29 parts of quartz sand, 26-28 parts of ground calcium carbonate, 1-3 parts of castor oil, 2-4 parts of polyethylene wax, 1-3 parts of powdered nitrile rubber and 20-23 parts of glass beads.
2. The environment-friendly hot melt marking paint as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 14 parts of modified C5 petroleum resin, 7 parts of pigment, 28 parts of quartz sand, 27 parts of ground calcium carbonate, 2 parts of castor oil, 3 parts of polyethylene wax, 2 parts of powdered nitrile rubber and 22 parts of glass beads.
3. The environment-friendly hot melt marking paint as claimed in claim 1 or 2, wherein the modified C5 petroleum resin is prepared by the following method:
step 1.1: weighing the following raw materials in parts by weight: 100 parts of C5 petroleum resin, 12-15 parts of maleic anhydride and 15-17 parts of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1.1 and accounting for 60-65% of the weight to 150-155 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 1.2, slowly adding the maleic anhydride weighed in the step 1.1 while stirring at the temperature of 150-155 ℃, and stirring for 1-2 h to obtain maleic C5 petroleum resin;
step 1.4: adding the powdered nitrile-butadiene rubber weighed in the step 1.1 into the maleic C5 petroleum resin obtained in the step 1.3 at the temperature of 195-200 ℃, heating to the temperature of 270-275 ℃, reacting for 6-8 h, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin.
4. The environment-friendly hot melt marking paint as claimed in any one of claims 1 to 3, wherein the powder particle size of the powdered nitrile rubber is 0.58mm to 0.6mm, the mass percentage of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
5. The environment-friendly hot melt marking paint as claimed in claim 1 or 2, wherein the molecular weight of the polyethylene wax is 2000-3000.
6. The environment-friendly hot melt marking paint as claimed in claim 1 or 2, wherein the pigment is chrome yellow or titanium dioxide.
7. The preparation method of the environment-friendly hot-melt marking paint is characterized by comprising the following steps:
step 1: preparation of modified C5 Petroleum resin
Step 1.1: weighing the following raw materials in parts by weight: 100 parts of C5 petroleum resin, 12-15 parts of maleic anhydride and 15-17 parts of powdered nitrile rubber;
step 1.2: heating the C5 petroleum resin weighed in the step 1.1 and accounting for 60-65% of the weight to 150-155 ℃, introducing nitrogen, stirring and melting to obtain primary stirring liquid;
step 1.3: adding the rest C5 petroleum resin into the primary stirring liquid obtained in the step 1.2, slowly adding the maleic anhydride weighed in the step 1.1 while stirring at the temperature of 150-155 ℃, and stirring for 1-2 h to obtain maleic C5 petroleum resin;
step 1.4: adding the powdered nitrile-butadiene rubber weighed in the step 1.1 into the maleic C5 petroleum resin obtained in the step 1.3 at the temperature of 195-200 ℃, heating to the temperature of 270-275 ℃, reacting for 6-8 h, discharging water while reacting, and vacuumizing to obtain the modified C5 petroleum resin;
step 2: preparing a first mixture
Weighing the following raw materials in parts by weight: 13-15 parts of modified C5 petroleum resin obtained in the step 1, 6-8 parts of pigment, 27-29 parts of quartz sand, 26-28 parts of heavy calcium carbonate, 1-3 parts of castor oil, 2-4 parts of polyethylene wax, 1-3 parts of powdered nitrile rubber and 20-23 parts of glass beads, and uniformly mixing the modified C5 petroleum resin, titanium dioxide, quartz sand, heavy calcium carbonate, polyethylene wax, powdered nitrile rubber and glass beads to obtain a first mixture;
and step 3: preparing the second mixture
Adding the castor oil weighed in the step 2 into the first mixture obtained in the step 2, and uniformly mixing to obtain a second mixture;
and 4, step 4: preparation of environment-friendly hot-melt marking paint
And (3) keeping the heating temperature at 195-200 ℃, and cooling to form a film at normal temperature after the second mixture in the step (3) is completely melted, so as to obtain the environment-friendly hot-melt marking paint.
8. The preparation method of the environment-friendly hot melt marking paint as claimed in claim 7, wherein in the step 1.1 and the step 2, the powder particle size of the powdered nitrile rubber is 0.58mm-0.6mm, wherein the mass percentage of acrylonitrile is 33%, the ash content is less than or equal to 1.0, the volatile matter is less than or equal to 1.0, and the powder forming rate is more than or equal to 95%.
9. The method for preparing the environment-friendly hot melt marking paint as claimed in claim 7, wherein in the step 2, the pigment is chrome yellow or titanium dioxide.
10. The method for preparing environment-friendly hot melt marking paint as claimed in claim 7, wherein in step 2, the molecular weight of the polyethylene wax is 2000-3000.
CN202010468514.5A 2020-05-28 2020-05-28 Environment-friendly hot-melt marking paint and preparation method thereof Withdrawn CN111635688A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112322136A (en) * 2020-11-20 2021-02-05 天津市公路工程总公司 Efficient retro-reflection hot-melting highway marking and manufacturing method thereof
CN112662267A (en) * 2020-12-31 2021-04-16 山西中涂交通科技股份有限公司 Continuous reflective high-standard hot-melt coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112322136A (en) * 2020-11-20 2021-02-05 天津市公路工程总公司 Efficient retro-reflection hot-melting highway marking and manufacturing method thereof
CN112662267A (en) * 2020-12-31 2021-04-16 山西中涂交通科技股份有限公司 Continuous reflective high-standard hot-melt coating

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