| abstract |
The present invention relates to the field of agricultural materials, and more specifically, to a fully biodegradable mulching film capable of mechanically mulching the film. The anchovy film is composed of a fully biodegradable resin, an adjuvant for strengthening strength, toughness, and light transmission, and a processing aid; Here, the addition of the auxiliary agent for strengthening the strength, strengthening the toughness, and enhancing the light transmittance can solve the problems of insufficient mechanical strength, easy to break, and difficult to mechanically mulch the ultra-thin mulching film; The use of processing aid can solve the problem of processing separation of ultra-thin film, and also solve the problem of low processing efficiency; In addition, a mulching film with a thickness of 4-6 μm, ultra-thin, ultra-transparent, and super-strength that can control complete bio-separation is developed by selecting the desired type of completely biodegradable resin and using functional aids. The transparency of the mulching film is high, the light transmittance is >90%, and the haze value is <13%; The mechanical strength is high, the tensile strength > 25MPa, and the film strength is applicable to general film mulching machines. Tensile strength, rupture tensile modulus, and right angle tear strength all meet the criteria for mechanical film mulching in PE film mulching. The physico-mechanical performance conforms to the provisions of GB13735-92. |