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北京塑料研究所研制成功一种厚度为0.05毫米的薄型耐老化多功能农膜,是一种新型覆盖材料。这种薄膜分别在北京市农科院蔬菜所、北京海淀农科所、北京双桥农场等处进行了扣棚试验考查,应用效果良好。生产实践证明这种薄膜有如下特点:1.耐老化、机械强度高。经曝晒和生产扣棚考查表明作大棚膜连续使用一年,仍完好无损;其厚度只有0.05毫米,但抗拉强度约比普通聚乙烯薄膜(0.1毫米厚)高1倍。抗撕裂强度和耐冲击强度也比其强。2.保温性能良好。用这种薄膜作大棚膜,棚温比用普通聚乙烯膜的高1～4.5℃,比用法国两星长寿膜(厚0.18毫米)和西班牙CP—117防老化膜的高0.3℃,比用相同厚度的日本U—RAC保温膜高0.5℃。3.全光性
Beijing Institute of Plastics successfully developed a thickness of 0.05 mm thin anti-aging multi-functional agricultural film, is a new type of covering material. This film were in Beijing Academy of Agricultural Sciences vegetables, Beijing Haidian Institute of Agriculture, Beijing Shuangqiaoshan farms and other places to test the buckle shed test, the application effect is good. Production practice has proved that the film has the following characteristics: 1. Anti-aging, high mechanical strength. After exposure and production of shack test showed that the greenhouse film for one year of continuous use, still intact; its thickness is only 0.05 mm, but the tensile strength about 1 times higher than ordinary polyethylene film (0.1 mm thick). Tear strength and impact strength than its strong. 2. Insulation performance is good. With this film as a greenhouse film, shed temperature than the ordinary polyethylene film 1 ~ 4.5 ℃, than the French two-star longevity film (thickness 0.18 mm) and Spain CP-117 anti-aging film 0.3 ℃, than with The same thickness of the Japanese U-RAC insulation film 0.5 ℃ high. 3 all-optical