The powder-coated protective layer of the guardrails in the city is damaged
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These are the guardrails in the city; they are coated with a plastic layer, and after 1 to 2 years they end up looking like this? Let’s discuss what causes this Are there any other better ways to make the protective coating last longer?
Damage to the plastic coating protecting the guardrail can be caused by factors such as prolonged exposure to sunlight, erosion by rainwater, aging of the plastic due to temperature fluctuations, or physical impact. To extend the service life of the protective coating, it is possible to use materials with better weather resistance such as polyurethane coatings, or to carry out regular maintenance and repair work on the guardrails. We welcome everyone to provide more suggestions or ideas. .
The result was due to inadequate sandblasting at the grassroots level.