Hot melt coatings are powdery at room temperature and have no solvent volatiles in their composition. Construction heating causes it to melt, and then specialized equipment is used to coat it on the ground, relying on physical condensation to solidify into a film. Its effectiveness has the following four advantages:
(1) The film layer has fast drying properties. After painting, it can be dried and opened to traffic for 1-3 minutes, and even construction can be carried out without blocking traffic.
(2) Good usage effect. The coating lines of the hot melt coating are complete and clear, with clear edges and corners, high brightness, and a three-dimensional feeling.
(3) Excellent wear resistance. The coating of this coating is durable, and the service life of the markings can reach 2 years.
(4) Reflective at night. Due to the addition of glass reflective material in the hot melt coating, glass microspheres can be scattered on the surface of the coating during construction, which can achieve good reflective effect, reduce traffic accidents, and meet the requirements of modern transportation facilities.
For hot melt road coatings, their flowability is a very important technical indicator during the construction process. When changing the flowability of hot melt coatings, it is generally achieved by increasing the resin content or using various processing aids, which to some extent makes it difficult for the coating to dry, and at the same time, it can cause the coating film to be soft and easy to adhere to dirt. In addition, a more important point is to increase the content of additives or resins in the coating, which will also increase the manufacturing cost of the coating. This article attempts to adjust the proportion of glass microspheres in the coating, while ensuring quality, to make the coating have good fluidity, facilitate construction, and achieve cost control.