What are the advantages and disadvantages of aspartic polyurea coatings
Aspartate polyurea coating (also known as polyaspartic ester polyurea) is a high-performance protective coating that combines the advantages of traditional polyurea and polyurethane while improving construction performance. Here are its main advantages and disadvantages:
The above are the five advantages of aspartic polyurea coating：
1. Super weather resistance
Excellent UV resistance, not prone to yellowing or powdering after long-term exposure, suitable for outdoor use (such as bridges and sports stands)。
Compared to traditional epoxy resin (prone to powdering) and ordinary polyurea (may turn yellow), it exhibits more stable performance。
2；Can cure quickly
The surface drying time is adjustable (usually 30 minutes to 2 hours), suitable for projects that require rapid construction (such as parking lots, factory floors)。
It can still cure at low temperatures (around 0 ℃) and has better adaptability than epoxy resin。
3；Capable of withstanding high wear and impact resistance
High hardness (up to Shore D 70 or above), while maintaining a certain degree of elasticity, suitable for places where vehicles frequently crush (such as logistics warehouses, garages)。
Excellent chemical corrosion resistance
Acid, alkali, salt, oil and other chemicals, suitable for corrosive environments such as chemical plants and electroplating workshops。
4；The product is environmentally friendly and meets the standard requirements
Low solvent content (or no solvent), in compliance with environmental requirements (such as GB 30981 standard)。
5；Flexible construction
Can be sprayed, rolled or scraped, with high tolerance for substrate humidity (construction can also be carried out on damp substrates)。
The following are several disadvantages of aspartic polyurea coatings：
High cost
The raw material prices are expensive (about 2-3 times that of ordinary epoxy flooring), suitable for high-end projects with sufficient budget。
High requirements for construction
Strict proportioning (A/B components) is required, as uneven mixing may lead to poor curing or decreased performance。
Spraying equipment requires professionalism (such as high-pressure spraying machines), and manual rolling coating is difficult。
Limited flexibility
Although more flexible than epoxy resin, it is not as good as pure polyurea (such as pure polyether polyurea) and may crack on extreme deformation surfaces (such as expansion joints)。
Less color options available
Mainly in monochrome or metallic colors, complex decorative effects (such as imitation stones and patterns) need to be combined with other techniques。
Difficult to repair
After curing, the surface is dense, and the old coating needs to be polished before recoating. Local repairs are prone to leaving traces。