What are the differences in thermal expansion coefficients for plastic outdoor armchair joints?
Thermal expansion coefficients play a critical role in the durability and performance of plastic outdoor armchair joints. Different plastics, such as polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC), exhibit varying rates of expansion when exposed to temperature fluctuations. For instance, PP has a higher coefficient than PE, making it more prone to dimensional changes in hot climates. These differences can lead to joint stress, cracking, or loosening over time. Understanding these properties helps in selecting the right material for outdoor furniture, ensuring longevity and comfort. Proper design, such as allowing for expansion gaps, can mitigate these issues and enhance the chair's lifespan.
