| abstract |
The invention provides a fully biodegradable agricultural mulch film, which is prepared from the following raw materials in parts by weight: 60-65 parts of polyadipic acid/butylene terephthalate, 10-15 parts of polylactic acid, modified 20-30 parts of polyvinyl alcohol, 5-10 parts of modified starch, 0.1-1 part of plasticizer, 0.1-1 part of heat stabilizer, 0.1-2 part of antioxidant, 0.5-2 part of anti-hydrolysis agent, UV absorber dose 0.5-2 servings. The invention uses a variety of biodegradable materials and various additives to obtain the agricultural mulch film through a simple blending and film blowing machine; the preparation process is simple, the preparation cost and the use and treatment cost are low, and the mechanical properties can be ensured. It is fully biodegradable, and its biodegradation cycle is controllable, with a wide range of applications and strong practicability. |