Let’s take a look at what material this parking sign is made of under the scorching sun
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Does anyone know what material this parking sign is made of? It has softened under the scorching sun – what could be the reason for that? What material would be suitable for something like a parking sign?
Soft plastic softens when the temperature is high; hard plastic would work, but it’s fragile
It’s PVC plastic, right? When it’s manufactured, durability against high natural temperatures and sunlight must be taken into account; this situation indicates poor quality – likely too little stabilizer was used. Parking signs are best made of stainless steel; considering cost, rubber traffic cones would be a good option.
Just use plastic that can withstand high temperatures. Plastics that can withstand high temperatures include, primarily, polytetrafluoroethylene, which can tolerate temperatures of up to 260°C ； Modified polystyrene, heat distortion temperature 176~205℃ ； Enhanced linear polyester, heat distortion temperature 240℃ ； Polyimide, heat distortion temperature 360℃ ； Modified polyphenylene oxide PPO, with a heat distortion temperature of 190°C.
When manufacturing, adding a skeleton inside can prevent this issue; refer to the skeleton oil seal.