Common knowledge of coatings: application and development of road marking coatings

Core tip: road marking is the most basic and effective part of traffic management facilities, and it is one of the effective ways to guide vehicles to drive normally Road marking paint is a kind of paint which is applied on the road to indicate traffic General road marking paint shall have the following characteristics: The coating should have good adhesion to asphalt pavement or cement pavement, and it is not easy to peel off in the use process; The road marking coating shall have good weather resistance and wear resistance, with small color change, clear marking, not easy to crack and wear during use, and can keep good anti abrasion Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Paint Home News: road marking is the most basic and effective part of traffic management facilities, and it is one of the effective ways to guide vehicles to drive normally Road marking paint is a kind of paint which is applied on the road to indicate traffic The general road standard coating should have the following characteristics: the coating should have good adhesion to asphalt pavement or cement pavement, and it is not easy to peel off in the use process; The road marking coating shall have good weather resistance and wear resistance, with small color change during use, clear marking, not easy to crack and wear; it can maintain good reflection, and the reflection effect will not decline significantly in a long period of time; the road marking coating shall have good construction performance, fast drying, flat surface and good effect on glass It is easy to control the thickness of the marking and keep the uniformity of the thickness of the marking Generally, road marking coatings can be divided into solvent type and hot-melt type, of which solvent-based road marking coating is the most commonly used, but a large number of solvents are released during the use of the coating, which seriously pollutes the environment It is specified that the content of organic solvent (especially the solvent easy to produce photochemical smoke) in solvent based coating shall be less than 17% (volume) This regulation undoubtedly limits the use of solvent based road marking coatings Since then, other advanced industrial countries have followed suit, successively issued environmental protection laws and regulations, stipulated the limits of organic volatile matter (VOC), and the development of solvent based road marking coatings has been on the decline Nowadays, with the improvement of living standards, people's requirements for living environment are more and more high, solvent based road sign coating has been unable to meet the needs of contemporary society The vibration hot-melt marking coating is modified on the basis of hot-melt road marking coating, mainly by improving the fluid characteristics of the original marking coating, so that the coating has excellent thixotropic performance in the melting state By shortening the drying time, improving the compressive strength and softening point, and using special construction tools to regularly draw various protruding drawing lines on the marking surface, such as point shape, strip, block, etc., the finished marking line has the vibration function after the automobile line pressing In rainy night, the coating film of ordinary hot-melt markings is flat, which is easy to be covered by rainwater in rainy night environment, and the regression reflection of markings on incident light is lost, so it is difficult for drivers to distinguish road markings The sunken part between the protrusions of the vibrating road reflective markings diverts rainwater, and the protrusions remain out of the water surface, which can continue to maintain the part of the reflected light out of the water surface Vibration marking is also known as raised marking, noise marking and rainy night marking From the shape of the product, it can be roughly classified as: dot vibration type marking, block vibration type marking and rib vibration type marking Because of its high cost and complexity compared with ordinary hot-melt markings, it is mainly used in accident prone areas and places requiring high awareness of road contour For example, the side line, turning, diversion, entrance and exit markings, bridges, tunnels, steep slopes and other sections of high-grade highways; the parking line, Lane demarcation line, special lane demarcation line at urban road intersections; and other places that need to have prompt function markings Road traffic markings are mainly used on the road surface, which are exposed to the sun, rain, wind, snow, ice, impact and abrasion of vehicles, so there are strict requirements for their performance First of all, it requires short drying time and simple operation to reduce traffic interference; second, it requires strong reflection ability, bright color and strong reflection to make good visibility in day and night; third, it should have skid resistance and wear resistance to ensure driving safety and service life For the diversification of road marking coating types and construction methods, the coating varieties that meet the necessary conditions of traffic marking must be selected according to the application effect of the coating From the perspective of development trend, the quality of hot-melt road reflective marking coating is constantly improving However, due to the reasons of construction quality, there are still unsatisfactory The main problems are as follows: first, the variety of coating is single, which can't be selected reasonably, which is easy to cause waste; second, the use of reflective glass beads is improper, which makes the reflective effect of the marking poor; third, the construction temperature is difficult to control; fourth, the anti sliding performance of the marking is not paid attention to, which makes the marking become the hidden danger of vehicle slip and sideslip accidents Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,