What are the factors that affect the service life of continuous film greenhouses

With the development of the plastic greenhouse industry,continuous film greenhouses are used for facility agricultural production and construction.Their film transmittance,insulation performance,tensile strength,and other performance are superior to ordinary agricultural films.It is of great significance for the growth,yield increase,and income increase of greenhouse crops.However,the use of film greenhouses also has lifespan limitations,and the following four aspects are key factors affecting the lifespan of film greenhouses.

1.Film thickness

The thicker the film,the longer its duration.The aging of PE materials comes from ultraviolet radiation,so agricultural films with ultraviolet absorbers and stabilizers are selected in the formula.Agricultural films with ultraviolet absorbers are like black protective layers on the film,which can absorb ultraviolet rays and convert them into heat energy.UV stabilizers can prolong the aging time of agricultural films and even protect damaged molecular structures.

2.Climate temperature

If agricultural films are exposed to high temperatures,especially in contact with the skeleton,it is easy to form hotspots,with temperatures up to 80℃.This part of the agricultural film is particularly prone to aging and damage.This is also the reason why the film cannot directly cover the frost,which will accelerate the aging of the film.In addition,it can also be tied with white plastic straps or tied to the skeleton in contact with the film,avoiding damage to the agricultural film caused by high temperatures.

3.Chemicals

Especially some pesticides and agents containing sulfur or chlorine can disrupt the stability of agricultural film quality.If you fumigate and use sulfur in a greenhouse to prevent sulfide combustion gases.Because sulfides can significantly reduce the service life of agricultural films.When burning sulfur,attention should be paid not to let the temperature exceed 160 degrees Celsius to prevent the production of sulfides.

4.Installation method

During the installation process of agricultural film, if it is not tightened, aging phenomenon often occurs. When strong winds come, the agricultural film will continuously hit the skeleton, causing damage to the film. Therefore, when installing agricultural film, tighten it evenly. If the outdoor temperature is below 10 degrees Celsius at that time, after a period of time, the temperature should be tightened again after it rises.