Petroleum resources, they should be recycled as much as possible. However, since the production cost of recycling at this stage is much higher than the direct production cost, it is difficult to achieve under the current market economy conditions. Facing the increasingly serious problem of white pollution, people hopes to find a plastic substitute that can replace the performance of the current plastic with out causing white pollution. After the service life is discarded, under certain environmental conditions, due to the obvious change of its chemical structure, which causes some performance loss and appearance changes and degrades, it is harmless or less harmful to the natural environment.