What changes will occur to the sunshade net if the anti-aging masterbatch is not added?

Sunshade nets are generally made of polyethylene. Polyethylene plastic is a kind of polymer. During the production process of polyethylene plastic, we will add some catalysts to make ethylene molecules bond together and polymerize to form ethylene plastic. However, the effect of the catalyst that causes the polymerization of ethylene molecules is limited. During the process of maintaining the polymerization of ethylene molecules, it will gradually lose its effectiveness. Therefore, the polyethylene plastic is likely to disintegrate into tattered fragments as the effect of the catalyst sharply decreases. This is the aging of polyethylene plastic. 

Long-term exposure to sunlight, high heat, and ultraviolet rays will all accelerate the aging process of polyethylene. If the anti-aging masterbatch is not added, a series of problems such as broken filaments and damaged nets will occur to the sunshade net after it has been used for a period of time, which will affect the reuse of the sunshade net.