The Demand For Greenhouse Film in The Industry Has Increased Significantly

Agricultural film is very important for modern agriculture and is closely related to the national economy and people's livelihood. Since the introduction of agricultural film in China in 1958, agricultural film has developed in China. At present, the output and coverage area of agricultural mulch film in China rank first in the world. However, compared with the world level, there is still a big gap between the current development level of agricultural film in China, and these gaps are mainly manifested in the small variety of products, the large gap between large-scale production equipment and foreign countries, the backwardness of research on various weather-resistant, high-temperature and high-performance films, and so on.
Agricultural film is exposed to the atmosphere, affected by sunlight, temperature, humidity and other factors, which damages the performance of the film and greatly shortens the service life of agricultural film. In the application of plastic greenhouses, people have experienced that the use of long-life agricultural film is beneficial to save energy, save human resources, and reduce environmental pollution. In foreign countries, agricultural film is almost a long-life agricultural film, and the use of weather-resistant functional film in China has only developed rapidly in recent years.
Natural atmospheric exposure test is an effective method to evaluate the weather resistance of agricultural greenhouse film, which can provide guidance for the use of agricultural greenhouse film. Generally speaking, PVC greenhouse film contains plasticizers and other additives, in Guangzhou, Hainan, such a strong sunshine, rainy environment, the performance will be in a short time.
Tensile strength and elongation at break are sensitive to film aging, and change significantly during natural exposure, which can reflect the change of the film during the entire aging period, and can be used as a test method to evaluate the aging resistance of plastic film.