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    Home > Coatings News > Paints and Coatings Market > Research and application of self-illuminating coatings on long afterglow pavement

    Research and application of self-illuminating coatings on long afterglow pavement

    • Last Update: 2020-11-23
    • Source: Internet
    • Author: User
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    Abstract: The self-illuminating, reactive polymer material is forced to stir and blend under the action of a certain compatible agent, and with the use of quantitative additives, can form a long afterglow self-illuminating coating for road construction. The coating absorbs solar energy storage during the day and can self-illuminate 6h at night, and is mainly used in colored urban slow-moving trail system decoration, wetland parks, mountain roads and other special road warning. At present, the material has been paved in Chongqing Wansheng District Tourism Avenue and Liuzhou City Xinliu Avenue test section, the effect is significantly
    China
    .years, with the continuous development of urban road traffic, people's safety warning on the road surface, landscape human characteristics and other requirements continue to improve, making the study of special pavement paving materials more and more in-depth. Therefore, a long afterglow self-illuminating coating which can not only meet the highway night safety warning and landscape effect, but also save energy has become the research hot spot of road engineering. This material is a new type of luminescent material, which has many advantages such as safety, aesthetics and energy saving. This new material has been studied many experiments at home and abroad, but at present there is only more research on luminous materials and less research on the luminous properties of pavement. In 2013, Cambridge Solar Glow built the first mosaic of illuminated pavements and line paints in the Netherlands. In 2014, it was reported that the effect of marked paint pavement was not ideal, and the problem of low luminous intensity and short luminous time was common in fluorescent pavement.the above problems, this paper will study a high-molecular polymer self-illuminating coating with long night luminescence time and cold construction. Self-illuminating coating technology utilizes the bonding and cold construction of water-reactive polymers, as well as the luminous effect of fluorescent materials, so that self-illuminating coatings have high road performance, construction performance and functional and landscape functions to meet special pavements. This paper is mainly based on water-based polymer coating technology, combined with the specific requirements of fluorescent materials used in road paving, through testing of the performance of the material, and through the combination design to determine the bonding, wear resistance, anti-slip and aging properties of fluorescent materials.Self-illuminating coating composition research
    self-luminescent coating research is divided into self-luminescent material test and paint performance test 2 parts, self-illuminating material test to study the particle size, glow performance of luminescent material, paint performance test to study the composite material and luminescent material after mixing the regenerological properties.test of self-illuminating materials
    selection and testing methods of self-illuminating materials. In the experiment, three types of self-illuminating materials with long luminous intensity and afterglow time were selected, and the three types of materials were ZX-1, ZX-2 and ZX-3.The sample preparation procedure is as follows: after placing 3 different specifications of self-illuminating material in DIN67510 light source and exciting 10min, test the curve of its glow and time; Class 3 materials were tested 3 times, with the medium particle size averaged.self-illuminating material performance test. In this paper, the properties of self-illuminating materials are studied in terms of particle size distribution, luminousness and luminous properties.it can be known that ZX-1 material particle size is the smallest, the cumulative particle size distribution percentage reaches 50% corresponding to the particle size of 24.302 m, the glow is also significantly stronger than ZX-2, ZX-3 class. According to the basic principles of quantum science, fluorescent materials absorb light energy and jump to the excitation state, which releases all the energy that is emitted and returns to the base state, a process that causes the material to glow. Because of the small particle size and particle size of ZX-1 materials, the resulting scattering light angle is large, so the greater the intensity of absorption and release of energy, so ZX-1 materials are suitable for the performance of fluorescent pavement research., the particle size and luminous characteristic curve of ZX-1 luminescent materials were tested. It can be seen that the ZX-1 material has a small particle size and is more concentrated, which can be dispersed and does not subside in the base of low viscosity polymer material. As can be seen, the ZX-1 material can reach more than 10000mcd/m2 after excitation, 107mcd/m2 at 60min, 6.5mcd/480min after-glow m2, and the visible glow of the naked eye is 0.38mcd/m2, so this kind of material can meet gb/T24981.2-2010 "rare earth long afterglow fluorescent powder test method" specification requirements.coating performance test
    of materials. Reactive polymer material (referred to as glue) consists of A and B two components, A components are composed of the main resin, filler and its compatible agent (MS-1), the group is divided into milky white umbody thick liquid; Group B is divided into specialized transparent curing agents (G-1). The A and B parts are mixed according to the prescribed proportion to obtain the milky white ion thick liquid, which has the contact fluidity. Class A self-illuminating materials are selected for luminescent materials.test sample preparation. Glue: put the main resin in a dispersed dish, proportionally add fillers, disperse evenly, add a certain weight ratio of MS-1 compatible agent, evenly disperse 15min, after completion, get A part, A part and B part in proportion to mix the glue. The codding material can be cured and molded after a 7h reaction.self-illuminating coating: according to the glue: self-illuminating material , the ratio of 2:1 mixed evenly, using the form of spray preparation test parts.the performance test of the glue. This paper mainly from the appearance, stretch strength, fracture elongation, bonding strength, gel time, curing time and other 6 aspects of the performance of the glue, glue curing performance indicators can be seen in Table 2.It can be known that the glue is a milky white viscous liquid, cured to form a transparent colorless solid, can ensure direct sunlight penetration, so that the fluorescent material mixed in the glue can absorb and release the light source, so as to achieve the purpose of night light. At the same time, the glue also has better mechanical properties, its strength is high, flexibility is good, thermostate performance is good, is suitable for fluorescent pavement excellent materials.the performance of self-illuminating coatings. In order to understand the road performance of self-luminescent coatings, the properties of fluorescent codding materials are tested based on pull-out test, rotating wear resistance test and ultraviolet aging test, and the bonding properties, wear resistance, anti-slip properties, aging properties and luminous time of fluorescent codding materials are mainly examined, and evaluated by road design test shops., the bonding strength of self-illuminating coating is above 2.5MPa, the mass loss is less than 0.1%, the anti-slip value is greater than the road specification requirements, and the luminous time is greater than 6h., the properties of fluorescent materials are significantly reduced after UV aging, especially the luminescence time is reduced by half. Analysis of the reasons: the intervention of ultraviolet light makes the internal capacity of the material increase, the self-illuminating material is easy to decompose under ultraviolet light, and the ability of the self-illuminating material to store light sources is reduced, resulting in a decrease in luminous time. In addition, the stretch strength and fracture elongation rate have been reduced to varying degrees, the key force of smaller parts of the fracture or re-binding, the formation of aging, resulting in the performance of the glue decay. road design test paving
    choose Chongqing Wansheng District Tourism Avenue and Liuzhou City Xinliu Avenue Green Zone as the fluorescent pavement test paving section. Wansheng District test section area of 300m2, 150m long, 2m wide, using fluorescent line paint and fluorescent pattern combination scheme. After the completion of the paving of the test section, the light-emitting time detection test was carried out. The test results show that the material is initially strong after maintenance of 12h and can open up traffic, and the luminous road luminescence time at night without any light is about 6h. Six months after the completion of the test section, it was tested again, and it was found that, in addition to surface pollution of the road surface, the road surface integrity is good, no pit grooves, shedding phenomenon, no disease occurred. Liuzhou City test section using fluorescent marker paint and fluorescent channel nails, light-emitting road nails mixed and matching scheme paving, the overall effect of the test section is good. Conclusion
    1) The road performance of self-illuminating coatings made from transparent reaction polymer materials and self-illuminating material composites is good, has certain luminous properties, and is suitable for road landscape and warning paving. 2) Self-illuminating material belongs to the emerging road material, which is expensive and has a narrow application range, as a landscape decoration material can be paved in a small area to embellish the effect, it is not recommended to promote the application of large areas. 3) Luminescent coating can be applied as a warning material to special road sections, which not only meets the effect of night-time landscape of highways, but also saves energy and has good development prospects.
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