Special full-biodegradable material for peanut mulching film and preparation method of special full-biodegradable material

Abstract

The invention discloses a special full-biodegradable material for a peanut mulching film. The special full-biodegradable material is characterized by being prepared from the following ingredients: 100parts of PLA, 70-90 parts of PBAT, 0.5-1.0 part of a nucleating agent, 5-10 parts of a compound hydrolysis resisting agent, 0.5-1.5 parts of a compound anti-ultraviolet agent, 3-6 parts of a molecular weight modifier, and 25-35 parts of a compound flexibility modifier. The mulching film prepared from the special material is excellent in hydrolysis resistance, lightproof aging property and flexibility, the opening property of the mulching film is good (the time for paving the mulching film is saved), the transmittance of light is high, and the special material can be completely biodegraded into carbon dioxide and water under the composting condition, does not pollute the soil and the environment, and is suitable for serving as the peanut mulching film.

Description

technical field [0001] The invention belongs to the technical field of ground covering films, and specifically relates to a special material for fully biodegradable peanut mulching films and a preparation method thereof. Background technique [0002] At present, mulch film has been widely used in the agricultural fields of various countries, and has attracted much attention for its unique functions of heat preservation, moisture retention, moisture retention, fertilizer increase, and production increase. In my country, more than 1 million tons of mulch are used every year, and the materials of these mulches are basically traditional petroleum-based materials such as PE. These materials will be left in the soil after use and discarded, causing serious white pollution. Peanut planting is very common in my country and has great development prospects. Bio-polyester materials such as polymethylethylene carbonate (PPC), polylactic acid (PLA), polybutylene terephthalate-adipate (P...

AI Technical Summary

Problems solved by technology

According to the patent analysis, there are few degradable mulch films dedicated to peanut covering, and the peanut degradable mulch film needs to meet the following characteristics: (1) Since the mulch film needs to be exposed to high-temperature ultraviolet radiation in summer, special ultraviolet rays and light stabilizers need to be added; (2) The summer rain is relatively heavy. However, biodegradable materials are prone to hydrolysis, and a single anti-hydrolysis agent is difficult to meet the requirements