The weather resistance of PVC waterstops shows in its ability to fight against these natural factors:
- Temperature Changes
- High Temperature: In hot summer, the temperature may reach 30℃ or higher. In some special places, it can be even hotter. Internal Expansion Joint PVC Waterstop, Internal Construction Joint PVC Waterstop, External Construction Joint PVC Waterstop, External Expansion Joint PVC Waterstop have some heat resistance. They can keep stable at high temperatures. They won't soften, deform quickly or lose water - stopping function because of high temperatures.
- Low Temperature: In cold winter, especially in high - latitude areas or high - altitude places, the temperature may drop to tens of degrees below zero. PVC waterstops are cold - resistant. They won't become brittle and crack easily in low - temperature environments. They can still be flexible to stop water when the structure expands, shrinks or deforms.
- Ultraviolet Radiation: Sunlight has strong ultraviolet rays. Long - term exposure can make many materials age and degrade. PVC waterstops often have anti - ultraviolet additives. So they can resist ultraviolet rays. This can slow down aging, color change and embrittlement caused by ultraviolet rays.
- Rain Erosion: Rainwater has acidic or alkaline substances. Long - term rain scouring can corrode materials. PVC waterstops are water - resistant and chemically stable. They can resist rain erosion. They won't dissolve, decompose or have worse performance because of long - term rain scouring.
- Atmospheric Humidity: High - humidity environments can make some materials absorb a lot of water and their performance gets worse. PVC waterstops absorb little water. In high - humidity environments, they won't expand, soften or get moldy. They can keep their physical and mechanical properties stable.
- Abrasion by Sand and Dust: In sandy and dusty areas, sand and dust particles can wear the surface of exposed materials with wind. PVC waterstops are a bit wear - resistant. They can resist sand and dust scouring and abrasion to protect their integrity and water - stopping performance.
- Ozone Action: Ozone in the air is highly oxidizing and can damage some polymer materials. PVC waterstops can tolerate ozone to some extent. They aren't easy to crack and age in an ozone environment.
