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Biodegradable agricultural film preparation method

A biodegradable, agricultural film technology, applied in the field of agricultural film, can solve the problems of white pollution, long degradation time, easy to break, etc., to achieve the effect of improving binding force, improving light transmittance and promoting refinement

Inactive Publication Date: 2018-08-07
方建波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the multi-purpose macromolecular PE and PVC polymers for agricultural film at present, its main components are polypropylene and polyvinyl chloride, which can achieve a certain heat preservation and moisturizing effect, but the degradation time is long and it is easily broken after use, resulting in To solve the problem of white pollution, provide a preparation method of biodegradable agricultural film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] Extract preparation method:

[0023] A. Grind the weathered coal, pass through a 80-mesh sieve, and dry to obtain a dried product. Mix the dried product and dilute hydrochloric acid at a mass ratio of 1:10, activate at a temperature of 100~105°C, cool to room temperature, and filter , to obtain a filter residue, wash the filter residue with water until neutral, and obtain a neutral substance;

[0024] B. According to the mass ratio of 1:10, stir the neutral substance and 0.2mol / L sodium hydroxide solution in a water bath at a temperature of 98~100°C for 1~2h, wait for cooling to room temperature, centrifuge, take the supernatant, and adjust When the pH value reaches 2~4, let it stand for 20~24 hours, filter, collect the precipitate, and dry it to obtain the extract.

[0025] How to prepare wraps:

[0026] a. Wash the lobster shells, dry them, and grind them into powder to obtain powder. Mix the powder and 0.2mol / L hydrochloric acid solution at a mass ratio of 1:5~6, s...

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Abstract

The invention discloses a biodegradable agricultural film preparation method and belongs to the field of agricultural films. The preparation method disclosed by the invention comprises the steps: taking absolute ethyl alcohol, distilled water, nano titanium dioxide and a silane coupling agent, putting the nano titanium dioxide and the silane coupling agent into a container, adding the absolute ethyl alcohol and the distilled water, evenly stirring, adjusting a pH value, magnetically stirring, filtering to obtain filter cake, using the absolute ethyl alcohol to wash the filter cake and then drying to obtain dried matter; mixing extractive with water, evenly stirring, adding the dried matter, oscillating away from light, centrifuging, taking precipitate, using deionized water to wash the precipitate, vacuum freeze drying and grinding to obtain ground matter; mixing wrapping matter, distilled water and a hydrochloric acid solution, evenly stirring, adjusting a pH and ultrasonically dispersing to obtain dispersed matter; mixing the dispersed matter with absolute ethyl alcohol, ball milling to obtain ball milled liquid, ultrasonically dispersing azodiisobutyronitrile, polyethylene resin, acetone and ball milled liquid, recycling the acetone and pressing on a plate vulcanizing machine to obtain the biodegradable agricultural film.

Description

technical field [0001] The invention belongs to the field of agricultural films, and in particular relates to a preparation method of a biodegradable agricultural film. Background technique [0002] Agricultural film and agricultural film, the main component is polyethylene. It is mainly used to cover farmland to increase ground temperature, preserve soil moisture, promote seed germination and rapid growth of seedlings, and inhibit weed growth. With the rapid development of the plastic industry, in agriculture, due to the use of agricultural mulch, the temperature and humidity of the soil are effectively controlled, the loss of water and nutrients is reduced, and the high yield and stability of crops are promoted, thereby increasing agricultural production. benefits. [0003] Agricultural plastic mulch began to be used in the middle of the 20th century. It was first applied to strawberry production in Japan in 1955 and promoted. In the early 1960s, France, Italy, the Uni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K9/06C08K3/22C08J5/18A01G13/02
CPCA01G13/0275C08J5/18C08J2323/06C08K9/06C08K2003/2241C08K2201/011
Inventor 方建波徐扣华刘红妹
Owner 方建波
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