| abstract |
The invention provides a multilayer composite multifunctional full-biodegradable plastic mulching film and a preparation method thereof, wherein the multilayer composite multifunctional full-biodegradable plastic mulching film at least comprises a stratum clinging layer and a supporting layer; the stratum close to the ground layer comprises the following components in parts by mass: 100 parts of full-biodegradable polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, 5-20 parts of ground-attaching modified master batch and 0-5 parts of chain extender; the supporting layer comprises the following components in parts by mass: 100 parts of full-biodegradable polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, 0-8 parts of auxiliary master batch and 0-5 parts of chain extender. The mulching film has the advantages of biodegradability, good ground adhesion, good mechanical strength and the like, and can freely adjust the required functionality, such as light turning property, heat preservation property and the like; and can be formed in one step by a multilayer coextrusion method. |