Overview of Thermoplastic Road Marking Paint
Thermoplastic road marking paint is a high-performance road marking material, using the thermosetting properties of synthetic resins, which can be quickly dried and molded after construction. This kind of paint is made of thermoplastic resin, pigment and filler, reflective glass beads and other modifiers, which is widely used in all kinds of road marking paint, including pedestrian crossings, lane demarcation lines, double-yellow lines and other important traffic signs.
Thermoplastic road marking paint has the following significant advantages:
Super adhesion: strong bonding with asphalt or concrete road surface
Excellent abrasion resistance: service life up to 2-3 years
Highly reflective: excellent visibility at night.
Fast drying: usually 3-5 minutes to open to traffic
Environmentally friendly and economical: low cost and meets environmental standards
5 reasons and solutions for the slow drying of thermoplastic road marking paint
1. Ambient temperature influence
Problem analysis: the standard test environment temperature is 23°C, when the working environment temperature is higher than this standard, the coating drying time will be significantly extended. Especially in the summer high temperature season, this problem is more prominent.
Solution:
Choose the lower temperature of the morning and evening construction time (recommended 6:00-10:00 or 16:00-19:00)
Use special high-temperature type thermoplastic road marking paint.
Appropriately increase the heating temperature of the paint (but not more than 220 °C)
2. Ground temperature is too high
Problem Analysis: The temperature of asphalt pavement in summer can be up to 60 °C or more, when the temperature of the paint drops to the same as the road surface, the drying process will be stagnant. This situation is particularly serious in the two-way double yellow line area (11:00-16:00) with long sunshine hours.
Solution:
Pre-emptively reduce the pavement temperature using cooling equipment
Use light-colored paints with high reflectivity
Increase the content of glass beads to increase the rate of heat dissipation
3. Paint formulation problems
Problem Analysis: Excessive resin content or improper modifier ratio will lead to longer drying time.
Solution:
Choose high quality coatings produced by regular manufacturers
Ensure that the resin content is in the reasonable range of 15-20%.
Add appropriate amount of drying accelerator
4. Improper construction thickness
Problem analysis: too thick coating will lead to the internal heat is difficult to disseminate, prolonging the drying time.
Solution:
Control the construction thickness between 1.5-2.5mm.
Use professional road marking machine to ensure uniform thickness
Adopt multi-layer thin coating process
5. Weather humidity impact
Problem Analysis: High humidity will slow down the cooling speed of paint.
Solution:
Avoid working on rainy days or immediately after rain
Pay attention to the weather forecast and choose the weather with humidity below 70%.
Use dehumidification equipment to improve the local environment
Professional Road Marking Recommendations
To ensure the best performance of thermoplastic road marking paint, we recommend:
- Choose high quality road marking machine and supporting equipment
- Strictly follow the standard proportioning of construction materials
- Do a good job of cleaning the road surface before construction
- Adjust the construction process according to different seasons
- Regularly maintain the marking equipment to ensure the construction quality.
FAQ:
Q：What is the best construction temperature of thermoplastic road marking paint?
A：It is recommended to work under the ambient temperature of 10-35°C, and the ground temperature should not exceed 50℃.
Q：How to judge whether the paint is completely dry?
A: You can use your fingers to touch it lightly without sticking to your hands, or use a special tester to detect it.
Q: Will long drying time affect the quality of marking?
A: Yes. It may lead to problems such as decreased reflective effect and reduced abrasion resistance.
Through the above optimization measures, the drying speed of thermoplastic marking paint can be significantly improved to ensure the quality of road marking construction and prolong the service life of marking. For more professional information about road marking machine or thermoplastic marking paint, please feel free to consult our expert team.