Nano-chitosan composite material and nano-coated particle products

Abstract

The invention discloses a nano-chitosan composite material prepared from the following raw materials in parts by weight: 2-15 parts of polylactic acid, 5-35 parts of chitosan, 10-40 parts of hydroxypropyl methyl cellulose, 10-30 parts of a vinyl ketone polymer, 0.5-2 parts of an oxygen release compound, 0.1-0.2 part of a dispersing agent and 0.1-0.15 part of nano-particle additives. The invention also discloses a preparation method of the nano-chitosan composite material. The nano-chitosan composite material disclosed by the invention has good water-retaining performance and water resistance, and can be applied as a coating material, for example, the nano-chitosan composite material can be taken as the coating material for wrapping water or fertilizers to form nano-coated particle products. The invention discloses a preparation method of the nano-coated particle products. The nano-coated particle products disclosed by the invention have slow release performance, and after being mixed with soil, the water or fertilizers wrapped by the nano-coated particle products can be released to the soil in a slow release mode, so that the nano-coated particle products can be widely applied to desertification control processes and can be used for scientifically and efficiently performing desertification control operations.

Description

technical field [0001] The invention relates to a nano-chitosan composite material, a preparation method and application thereof, and a particle product coated with the nano-composite material and a preparation method thereof. Background technique [0002] The world's land area is 162 million square kilometers, of which the desert area accounts for 20% of the total land area, and 43% of the land is facing the threat of desertification. In my country, the desertification area accounts for 17% of the total land area of ​​the country. Desertification seriously destroys land resources, reduces the land area available for farming and animal husbandry, degrades the land's reproductive capacity, reduces the number of plants, reduces the livestock capacity of the land, and reduces the yield per unit area of ​​crops. Desertification has caused serious losses to agriculture, animal husbandry and people's living property in many countries and regions. The environment in the desertifi...

AI Technical Summary

Problems solved by technology

[0004] 1. It is refined from petroleum and its derivatives, which will pollute the soil and decompose in the soil for a long time

[0005] 2. The reaction stock solution of products such as water-retaining agent and water-absorbing resin is a highly toxic substance, which has toxins that attack nerves. Although the toxicity is reduced after the reaction, it has negative effects such as inhibiting the growth of soil microorganisms and plants.

[0006] 3. All chemical water-retaining products such as water-retaining agents on the market, after years of desert field tests and many experts' demonstrations, will absorb water back when the humidity of the soil is higher than the chemical water-absorbing substances such as water-retaining agents themselves, making their surroundings rapid inhalation of moisture, resulting in accelerated plant death

Images