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1、 Product Core Definition

Cold applied polyurethane marking paint is a kind of normal temperature curing marking paint, which takes polyurethane resin as the core film-forming component, compounded with high-performance pigments and fillers, anti-aging additives and environmentally friendly solvents. Its core advantage lies in the strong toughness and chemical stability of polyurethane molecular structure, which does not require high temperature heating. It can quickly form a marking coating with high elasticity, high wear resistance and strong weather resistance through room temperature brushing, rolling coating or spraying. It is widely used in traffic guidance, area division and safety warning scenarios that require higher flexibility and weather resistance. It is the preferred marking solution in complex environments such as humidity and large temperature differences.

This product strictly complies with the relevant standards of "Road Marking Coatings" (JT/T 280-2004) and "Polyurethane Waterproof Coatings" (GB/T 19250-2013). After testing by the National Building Materials Testing Center, it has shown outstanding performance in key indicators such as elastic recovery rate, UV aging resistance, and chemical corrosion resistance. It can be adapted to various substrates such as cement, concrete, and metal, especially suitable for use in rainy areas in the south and cold areas in the north.

2、 Core performance characteristics

1. Fast drying at room temperature, efficient construction

No specialized high-temperature heating equipment is required. After opening the barrel, add a special curing agent (usually 5:1 mixture of components A and B) and stir evenly before construction. The equipment investment cost is reduced by more than 50% compared to hot-melt coatings. At a room temperature of 20 ℃, the surface drying time only takes 8-12 minutes, and the actual drying time is ≤ 45 minutes. Even at a low temperature of 10 ℃, the actual drying time can be controlled within 60 minutes, greatly reducing the road closure period. Especially suitable for efficient construction of enclosed spaces such as urban underground garages and tunnels, reducing interference with traffic flow and production operations.

2. Strong adhesion, wear resistance, and durability

By utilizing the dual effects of physical adsorption and chemical bonding between polyurethane resin and substrate, the adhesion force can reach over 1.5 MPa, and it can withstand the rolling and tire friction of heavy trucks and construction machinery for a long time without damage. Simultaneously possessing excellent elastic recovery performance, with an elastic recovery rate of ≥ 90%, it can adapt to slight settlement and vibration of the road surface, effectively avoiding coating damage caused by substrate cracking, and extending the use time by more than 30% compared to ordinary epoxy marking paint.

3. Weather and corrosion resistance, strong environmental adaptability

The cross-linked structure formed by polyurethane molecules is dense and elastic, with weather resistance far exceeding that of traditional coatings. It can maintain a bright color even after 5 years of outdoor use. It can withstand severe temperature differences from -30 ℃ to 80 ℃, and does not become brittle or sticky in the cold winter of Northeast China or in the hot summer environment of the south. At the same time, it has excellent chemical corrosion resistance and can resist long-term erosion from gasoline, diesel, acid and alkali solutions, salt water (snow melting agents), etc. It has stable performance in special environments such as coastal ports, chemical parks, and northern snow removal areas, and has no risk of penetrating corrosion to the substrate. Both new and old cement can firmly adhere.

4. Environmental friendly economy, in line with the dual carbon concept

Adopting a low VOC environmentally friendly formula, solvent based products have a VOC content of ≤ 300g/L, water-based products have almost zero VOC emissions, and there are no irritating odors or dust pollution during the construction process, which meets the technical requirements of "Technical Requirements for Coatings with Low Volatile Organic Compound Content" (GB/T 38597-2020). The carbon emissions throughout the entire lifecycle are reduced by more than 70% compared to hot-melt coatings, and the global warming potential is only 0.85, helping to achieve the "dual carbon" goal. Although the material cost is slightly higher than that of epoxy coatings, the overall cost-effectiveness is increased by 25% -35% due to a 30% extension in service life and a 40% reduction in maintenance costs, making it particularly suitable for large-area, long-term marking projects.

5. Rich colors and flexible applications

Conventional equipment is equipped with traffic specific colors such as white and yellow, and can be customized with multiple color schemes such as red (danger warning), blue (fire escape), green (safety exit), black (speed bump sign), etc. The color saturation is ≥ 90%, and it has excellent color retention. The surface of the paint film is smooth and flat, with strong covering power. The white coating has a covering power of 99% and the yellow coating has a covering power of 88%. It can completely cover the base color with one application without the need for repeated brushing. It can accurately draw different line widths of 80-400mm, as well as complex markings such as directional arrows, speed limit signs, and text patterns, with a line accuracy deviation of ≤± 3mm, suitable for the precise needs of intelligent parking space marking in parking lots.

3、 Applicable scenarios and typical applications

1. In the field of transportation and roads

Suitable for urban basements and other environmental areas, its high elasticity and weather resistance can adapt to road vibrations and temperature changes; In urban roads in northern ice and snow regions, the corrosion resistance of snow melting agents is significant; In scenarios such as driving school training grounds and temporary event venues, it combines the advantages of rapid construction and detachable updates to meet the needs of temporary marking.

2. Industrial and warehousing fields

Widely used in workshop passages, equipment positioning lines, and dangerous goods storage area marking in factories such as automobile manufacturing, mechanical processing, food processing, and chemical production. Its oil and acid resistance and alkali resistance are suitable for industrial environments; The marking of cargo locations and loading and unloading areas in logistics warehouses and cold chain warehouses can withstand frequent forklift crushing and low-temperature environmental tests, and is easy to clean and maintain, reducing the impact of oil accumulation on the clarity of markings.

3. Public and commercial places

Underground parking lots in shopping malls, emergency passages in hospitals, audience passages in sports venues, and other places improve traffic efficiency with high reflectivity and rapid solidification characteristics; Places such as nursing homes, kindergartens, and parent-child playgrounds can be customized with anti slip coatings (friction coefficient ≥ 0.6) to ensure the safety of the elderly and children while drawing lines. The colors are bright and not easily faded, suitable for the aesthetic needs of public places.

4. Special functional areas

In high salt spray environments such as coastal ports and salt fields, as well as corrosive places such as chemical parks and laboratories, its chemical corrosion resistance can ensure the long-term effectiveness of the marking; In extreme temperature scenarios such as cold storage (-25 ℃) and high-temperature workshops (70 ℃), the coating performance remains stable and does not fail; In scenarios where high elasticity is required, such as auxiliary markings on airport runways and marking lines around bridge expansion joints, it can effectively absorb vibrations and deformations and avoid coating cracking.

4、 Key points for construction and storage

1. Preparation before construction

The substrate needs to be dry and clean (with a moisture content of ≤ 8%, and wet substrates can use wet curing products), removing oil stains, floating dust, moss, and residual old markings. If there are cracks on the cement floor, polyurethane putty should be used to repair and level them first. The temperature of the construction environment should be controlled between 5-40 ℃, with a relative humidity of ≤ 90%. Construction can be carried out in a slightly damp state on the substrate after light rain (but there should be no visible water). According to the design requirements, use an ink fountain to mark the reference line. Set control points every 60m for straight sections and every 8m for curved sections to ensure a smooth and straight line shape. The mixture of components A and B should be used within 20 minutes to avoid premature curing of the coating.

2. Construction method

High pressure airless cold spray marking machine (pressure 0.4-0.6MPa) is used for large-scale construction, with the nozzle 8-12cm above the ground and moving at a constant speed (3-5km/h) to ensure uniform coating thickness (0.3-0.5mm); Small and complex patterns are constructed using specialized marking brushes or rolling brushes, with consistent brushing direction to avoid sagging and pinholes. If viscosity adjustment is required, only specialized diluents can be used, with an addition amount of ≤ 3%. Excessive amounts will reduce coating performance. Reflective glass beads need to be spread before the coating dries to ensure that the embedding depth meets the standard.

***Cold applied polyurethane marking paint, with its core advantages of high elasticity, weather resistance, fast construction, and long-term durability, has become the preferred material for complex environmental marking projects. During construction, it is necessary to strictly mix the A and B components in proportion to ensure that the coating performance meets the standard.