CN112662267A - Continuous reflective high-standard hot-melt coating - Google Patents
Continuous reflective high-standard hot-melt coating Download PDFInfo
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- CN112662267A CN112662267A CN202011632826.1A CN202011632826A CN112662267A CN 112662267 A CN112662267 A CN 112662267A CN 202011632826 A CN202011632826 A CN 202011632826A CN 112662267 A CN112662267 A CN 112662267A
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Abstract
The invention discloses a continuous light-reflecting high-standard hot-melt coating which is formed by mixing 13-20 parts of resin film-forming substances, 30-35 parts of mixed glass beads, 10-20 parts of fillers and 3-6 parts of functional auxiliaries, wherein the resin film-forming substances are formed by mixing C5 petroleum resin, C9 hydrogenated petroleum resin and maleic anhydride modified rosin resin, and the mixed glass beads are formed by mixing glass beads with three particle size grades of 16-30 meshes, 30-50 meshes and 50-80 meshes. The continuous retroreflection value and the conventional performance of the coating are superior to those of the traditional hot-melt coating, the retroreflection performance can last for more than one year at the later stage, and the maintenance cost of the road marking is reduced.
Description
Technical Field
The invention belongs to the technical field of coatings, and relates to a coating for a road marking, in particular to a hot-melt type road marking coating.
Background
As a lifeline for controlling and guiding road traffic, a road traffic marking is a defined line, arrow, text, elevation mark, raised road sign, or other guiding device that is marked on a road surface or other facility to control and guide traffic and to disperse traffic flow.
With the rapid development of road construction industry in China, the types of road marking paint are more abundant, and the performance requirements are gradually improved. At present, the marking paint is mainly divided into a hot-melt type marking paint and a solvent type marking paint, wherein the hot-melt type marking paint is still a mainstream product in the market due to low price and no volatile organic compounds.
However, with the continuous increase of road traffic pressure, the maintenance period of roads is shortened, the traditional hot-melt marking paint cannot meet the current use requirement, and higher requirements are provided for the rapidity of road marking construction and the conventional performance of the marking paint, particularly for the retroreflection durability of the marking.
The conventional hot-melt road marking has the following main problems: 1) the wear resistance is poor, and the road leads to the car half a year after, and the marking can be worn and torn by a wide margin, and the glass pearl drops simultaneously, leads to the contrary reflective performance decline of marking, influences driving safety. 2) High temperature compressive strength is low, and when summer ground temperature was high, the marking was pressed out rut mark easily, and inside the glass pearl was impressed the marking under pressure simultaneously, lost contrary reflective performance. 3) The anti-fouling capacity of the surface of the marked line is low, the marked line is easy to become dirty, the visibility is influenced, and the retroreflection value of the marked line is further reduced.
Due to the reasons, the retroreflection value of the existing road marking is not lasting enough, the safety of driving at night is indirectly influenced, and the potential safety hazard of road driving is greatly increased.
Disclosure of Invention
The invention aims to provide a continuous reflective high-standard hot-melt coating, so that the continuous retroreflection value and the conventional performance of the coating exceed those of the conventional hot-melt marked lines, the driving safety of roads is improved, and the road maintenance cost is reduced.
The continuous reflective high-standard hot-melt coating is prepared by mixing the following functional components in parts by weight:
13-20 parts of resin film-forming substances;
30-35 parts of mixed glass beads;
10-20 parts of a filler;
3-6 parts of a functional assistant.
Wherein the resin film-forming substance is a modified resin formed by mixing C5 petroleum resin, C9 hydrogenated petroleum resin and maleic anhydride modified rosin resin.
The mixed glass beads are formed by mixing 16-30 meshes, 30-50 meshes and 50-80 meshes of glass beads in three particle size fractions according to the mass ratio of (1-2) to (3-5) to 1.
Furthermore, the resin film-forming substance is a modified resin formed by mixing C5 petroleum resin, C9 hydrogenated petroleum resin and maleic anhydride modified rosin resin according to the mass ratio of (10-15) to (3-5) to 1.
The filler of the present invention is a variety of general-purpose fillers used in conventional hot melt coatings, and the present invention is not particularly limited thereto. Further, the filler includes but is not limited to one of titanium dioxide, calcium carbonate, quartz powder and wollastonite powder, or a mixture of several of them in any proportion.
The functional auxiliary agent comprises various components which are conventionally added in the hot-melt coating and are used for improving various specific properties of the hot-melt coating. The functional additives include, but are not limited to, anti-settling agents, toughening agents, and plasticizers.
Preferably, the anti-settling agent used in the hot melt coating of the present invention is a polyolefin wax anti-settling agent, including but not limited to one or more of polypropylene wax, oxidized polyethylene wax, and the like.
Preferably, the toughening agent used in the hot melt coating of the present invention is a thermoplastic elastomer type toughening agent, including but not limited to one or more of ABS, SBS, EVA, etc.
Preferably, the plasticizer used in the hot melt coating of the present invention is a phthalate plasticizer, including but not limited to one or more of dimethyl phthalate, diethyl phthalate, dioctyl phthalate, and the like.
Similarly, the method for preparing the continuous reflective high-standard hot melt coating is not particularly limited, and any conventional mixing method can be used as the method for preparing the continuous reflective high-standard hot melt coating provided that the functional components of the continuous reflective high-standard hot melt coating can be uniformly mixed.
When the hot-melt coating is used in construction, the hot-melt coating is heated and stirred continuously, when the temperature reaches 180-220 ℃ and the hot-melt coating becomes liquid, the hot-melt coating is constructed on a road surface, the road surface is cooled for 1-3 minutes at normal temperature, glass beads are scattered or not scattered on the surface, and after the road surface is completely cooled, the hot-melt coating road marking coating with continuous light reflecting performance can be obtained.
The continuous reflective high-standard hot-melt coating disclosed by the invention selects three resin combinations as film forming substances, and plays different roles in the road marking coating respectively. Wherein, the C5 petroleum resin is used as a basic film forming substance of the coating, the C9 hydrogenated petroleum resin improves the whiteness of the coating, and the addition of the maleic anhydride modified rosin resin improves the strength of the film forming substance. Therefore, the resin film-forming substance obtained by mixing and modifying the three resins can improve the wear resistance and the brightness factor of the coating, the improvement of the wear resistance can prolong the service life and the maintenance period of the road marking, the improvement of the brightness factor can enhance the visibility and the night visibility of the road marking, and the cooperation of the three materials indirectly prolongs the retroreflection performance of the road marking.
Furthermore, the hot-melt coating is added with the glass beads with three particle size fractions, so that the hot-melt coating is suitable for construction under different pavement conditions and different thickness requirements. During construction, the glass beads with different particle sizes are uniformly distributed in the road marking coating, the glass beads with different particle sizes on the same coating plane can ensure retroreflection from light sources in different directions, and the glass beads at different heights on the same coating section can also ensure that the continuous retroreflection effect is exerted in the abrasion process of the road marking, so that the long-acting retroreflection value of the road marking is ensured.
The continuous reflective high-standard hot-melt coating disclosed by the invention greatly exceeds the traditional hot-melt coating in the aspects of continuous retroreflection value and conventional performance, the retroreflection performance can last for more than one year after the construction of the coating once, the maintenance cost of the road marking is reduced, the potential safety hazard caused by frequent road maintenance is avoided, the driving safety is obviously improved, the energy is saved, the environment is protected, and the trend of environmental protection development in China is met.
Detailed Description
The following examples further describe embodiments of the present invention. The following examples are only for more clearly illustrating the technical solutions of the present invention so as to enable those skilled in the art to better understand and utilize the present invention, and do not limit the scope of the present invention.
In the present invention, the terms such as "upper", "lower", "left", "right" and "middle" are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship changes or adjustments may be made without substantial technical changes and modifications.
The raw materials used in the examples of the present invention are not particularly limited in terms of source unless otherwise specified. Even materials purchased on the market can be prepared according to conventional methods well known to those skilled in the art.
The names and the short names of the process and the equipment adopted by the invention belong to the conventional names in the field, each name is quite clear and definite in the field of related application, and a person skilled in the art can understand the conventional process steps and apply the corresponding equipment according to the names.
Example 1.
10kg of 16-30-mesh glass beads, 20kg of 30-50-mesh glass beads and 5kg of 50-80-mesh glass beads are added into a stirrer together and stirred and mixed uniformly to obtain the mixed glass beads.
Weighing 10kg of C5 petroleum resin, 5kg of C9 hydrogenated petroleum resin, 3kg of maleic anhydride modified rosin resin, 30kg of mixed glass beads, 10kg of heavy calcium carbonate, 10kg of titanium dioxide, 2kg of oxidized polyethylene wax, 2kg of EVA (ethylene vinyl acetate), and 2kg of dioctyl phthalate, uniformly mixing and stirring, and packaging to obtain the continuous reflective high-standard hot melt coating.
Example 2.
6kg of 16-30-mesh glass beads, 20kg of 30-50-mesh glass beads and 5kg of 50-80-mesh glass beads are added into a stirrer together and stirred and mixed uniformly to obtain the mixed glass beads.
Weighing 15kg of C5 petroleum resin, 3kg of C9 hydrogenated petroleum resin, 1kg of maleic anhydride modified rosin resin, 30kg of mixed glass beads, 7kg of heavy calcium carbonate, 9kg of titanium dioxide, 1kg of oxidized polyethylene wax, 2kg of EVA (ethylene vinyl acetate) and 2kg of dimethyl phthalate, uniformly mixing and stirring, and packaging to obtain the continuous light-reflecting high-standard hot-melt coating.
Example 3.
10kg of 16-30-mesh glass beads, 25kg of 30-50-mesh glass beads and 5kg of 50-80-mesh glass beads are added into a stirrer together and stirred and mixed uniformly to obtain the mixed glass beads.
Weighing 12kg of C5 petroleum resin, 4kg of C9 hydrogenated petroleum resin, 1kg of maleic anhydride modified rosin resin, 35kg of mixed glass beads, 8kg of heavy calcium carbonate, 8kg of titanium dioxide, 1kg of polypropylene wax, 1kg of EVA (ethylene vinyl acetate) and 1kg of dioctyl phthalate, uniformly mixing and stirring, and packaging to obtain the continuous reflective high-standard hot melt coating.
Example 4.
Adding 8kg of 16-30-mesh glass beads, 23kg of 30-50-mesh glass beads and 5kg of 50-80-mesh glass beads into a stirrer together, and stirring and mixing uniformly to obtain the mixed glass beads.
Weighing 12kg of C5 petroleum resin, 4kg of C9 hydrogenated petroleum resin, 1kg of maleic anhydride modified rosin resin, 35kg of mixed glass beads, 10kg of heavy calcium carbonate, 10kg of titanium dioxide, 2kg of oxidized polyethylene wax, 1kg of SBS and 1kg of dioctyl phthalate, uniformly mixing and stirring, and packaging to obtain the continuous reflective high-standard hot melt coating.
Comparative example 1.
Weighing 15kg of C5 petroleum resin, 1kg of maleic anhydride modified rosin resin, 32kg of mixed glass bead prepared in example 1, 10kg of ground calcium carbonate, 6kg of titanium dioxide, 2kg of oxidized polyethylene wax, 2kg of EVA and 2kg of dioctyl phthalate, uniformly mixing and stirring, and packaging to obtain the hot-melt coating.
Comparative example 2.
Weighing 10kg of C5 petroleum resin, 5kg of C9 hydrogenated petroleum resin, 32kg of mixed glass microspheres prepared in example 1, 10kg of ground calcium carbonate, 6kg of titanium dioxide, 2kg of oxidized polyethylene wax, 2kg of EVA and 2kg of dioctyl phthalate, uniformly mixing and stirring, and packaging to obtain the hot-melt coating.
Comparative example 3.
Weighing 10kg of C5 petroleum resin, 5kg of C9 hydrogenated petroleum resin, 1kg of maleic anhydride modified rosin resin, 32kg of national standard No. II glass bead, 10kg of heavy calcium carbonate, 6kg of titanium dioxide, 2kg of oxidized polyethylene wax, 2kg of EVA (ethylene vinyl acetate), and 2kg of dioctyl phthalate, mixing and stirring uniformly, and packaging to obtain the hot-melt coating.
The hot-melt coatings prepared in the embodiments 1-4 and the comparative examples 1-3 are respectively taken, heated, stirred and melted to be in a liquid state at 180-220 ℃, the performance of the obtained coating is tested according to a method in GB/T280 plus 2004 pavement marking coating, and the retro-reflection brightness coefficient of the obtained coating is tested according to GB/T21383 plus 2008 original retro-reflection brightness coefficient and test method of newly-scribed pavement marking. Specific test data are listed in table 1.
The brightness factor determines the visualization degree of the road marking and simultaneously influences the later retroreflection index of the marking. The lower the luminance factor, the faster the retroreflection value of the later road markings decreases.
The compressive strength determines the strength of the road marking at this temperature, the lower the strength, the more likely the road marking will collapse and rut.
As can be seen from the data in Table 1, the conventional performance and the long-acting retroreflection coefficient of the hot-melt coatings in the examples 1-4 are both beyond those of common hot-melt coatings, particularly the retroreflection brightness coefficient of road marking after one year is greatly beyond those of conventional hot-melt marking. According to the data of comparative examples 1-3, the addition of C9 hydrogenated petroleum resin, maleic anhydride modified rosin resin and mixed glass beads affects the performance of the road marking from different conventional performance indexes, and further has a positive effect on the long-acting retroreflection brightness coefficient of the road marking.
Therefore, compared with the performance indexes specified by related standards, the hot-melt coating disclosed by the invention is far beyond the standard requirements, the continuous retroreflection brightness coefficient of the road marking is greatly improved, and the hot-melt coating is a high-performance long-acting hot-melt marking.
The above embodiments of the present invention are not intended to be exhaustive or to limit the invention to the precise form disclosed. Various changes, modifications, substitutions and alterations to these embodiments will be apparent to those skilled in the art without departing from the principles and spirit of this invention.
Claims (10)
1. A continuous reflective high-standard hot-melt coating is prepared by mixing the following functional components in parts by weight:
13-20 parts of resin film-forming substances;
30-35 parts of mixed glass beads;
10-20 parts of a filler;
3-6 parts of a functional additive;
wherein the resin film-forming substance is a modified resin formed by mixing C5 petroleum resin, C9 hydrogenated petroleum resin and maleic anhydride modified rosin resin;
the mixed glass beads are formed by mixing 16-30 meshes, 30-50 meshes and 50-80 meshes of glass beads in three particle size fractions according to the mass ratio of (1-2) to (3-5) to 1.
2. The hot-melt coating according to claim 1, wherein the mass ratio of the C5 petroleum resin, the C9 hydrogenated petroleum resin and the maleic anhydride modified rosin resin used to constitute the resinous film-forming material is (10-15) to (3-5) to 1.
3. The hot melt coating as claimed in claim 1, wherein the filler is one of titanium dioxide, calcium carbonate, quartz powder and wollastonite powder, or a mixture of any of the above materials.
4. The hot melt coating of claim 1, wherein the functional additives comprise anti-settling agents, toughening agents and plasticizers.
5. The hot melt coating according to claim 4, wherein the anti-settling agent is a polyolefin wax type anti-settling agent.
6. The hot melt coating according to claim 5, wherein the anti-settling agent is a polypropylene wax or an oxidized polyethylene wax.
7. The hot melt coating of claim 4, wherein the toughening agent is a thermoplastic elastomer toughening agent.
8. The hot melt coating as claimed in claim 7, wherein the toughening agent is one or more of ABS, SBS or EVA.
9. The hot melt coating of claim 4, wherein the plasticizer is a phthalate plasticizer.
10. The hot melt coating according to claim 9, wherein the plasticizer is one or more selected from the group consisting of dimethyl phthalate, diethyl phthalate, and dioctyl phthalate.
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| CN202011632826.1A CN112662267A (en) | 2020-12-31 | 2020-12-31 | Continuous reflective high-standard hot-melt coating |
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| CN202011632826.1A CN112662267A (en) | 2020-12-31 | 2020-12-31 | Continuous reflective high-standard hot-melt coating |
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Cited By (6)
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| CN110997818A (en) * | 2017-08-16 | 2020-04-10 | 科腾聚合物有限责任公司 | Granular pavement marking binders and related methods |
| CN113980542A (en) * | 2021-11-15 | 2022-01-28 | 河南工业大学 | Granary outer wall heat-insulating coating prepared by recycling hot-melt type reflective coating and construction method thereof |
| CN114032002A (en) * | 2021-11-15 | 2022-02-11 | 浙江欧路德交通科技有限公司 | Road marking paint suitable for heavy traffic expressway and preparation method thereof |
| CN114621622A (en) * | 2022-03-10 | 2022-06-14 | 华南理工大学 | Hot-melt marking line modified material and hot-melt marking line coating |
| CN115073990A (en) * | 2022-06-16 | 2022-09-20 | 广东华路交通科技有限公司 | Double-sparse long-acting reflective road marking and construction method |
| CN115975468A (en) * | 2022-12-09 | 2023-04-18 | 山东高速交通科技有限公司 | Durable hot-melt marking paint and preparation method thereof |
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Application publication date: 20210416 |