Biodegradable agricultural mulching film modified material and preparation method thereof

• Main Authors: WANG QIANQIAN, TONG YANPING, QI XIANYONG, GUO CHENCHAO, HUA YUEQING, HUANG JIAN, LI BAOYIN, CHEN LIANQING, ZHAN ZUOMIN, LI YIYU
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AGRICULTURE; ANIMAL HUSBANDRY; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; FISHING; FORESTRY; GENERAL PROCESSES OF COMPOUNDING; HORTICULTURE; HUMAN NECESSITIES; HUNTING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRAPPING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WATERING; WORKING-UP

The invention provides a biodegradable agricultural mulching film modified material and a preparation method thereof. Graft-modified PBAT resin is oxidized polyethlene wax graft-modified PBAT resin; the modified water-absorbent resin is water-absorbent resin particles for adsorbing the preservative. A hydrophobic polyethylene alkyl chain structure is introduced in a polyethylene wax grafting modification PBAT mode, and the polyethylene alkyl chain structure is easy to migrate to the surface of the material after film blowing, so that the surface energy of the material is reduced, and the water resistance of the material is improved. By introducing the water-absorbent resin, hydrolysis caused by direct contact of ester groups in the mulching film with water can be inhibited, and the water-absorbent resin slowly releases the preservative in a reverse osmosis manner, so that the degradation of microorganisms such as bacteria in soil on the degradable mulching film can be inhibited, and the problem of rapid loss