Alloy matrix particles for preparing degradable mulching films

Abstract

The invention relates to preparation of matrix particles capable of producing degradable mulching films, in particular to alloy matrix particles for preparing the degradable mulching films. The alloy matrix particles for preparing the degradable mulching films comprises the following components in percentage by weight: 0.01 to 0.03 percent of tert-butyl peroxy isopropyl benzene, 1.50 to 2.25 percent of fumaric acid, 4.50 to 5.60 percent of microcrystalline wax, 3.60 to 5.40 percent of polyethylene wax, 3.00 to 4.20 percent of MG70, 9.00 to 13.0 percent of N210 and 68 to 80 percent of corn starch. The alloy matrix particles for preparing the degradable mulching films have the advantages that: the alloy matrix particles can be restructured with PE structures to form a network bridge, so the prepared mulching films can be degraded quite uniformly; the problem of balancing the water tolerance and the hydrophilicity is solved, so the prepared mulching films can be attached to the ground surface, are difficult to blow away by wind, and have better function when used as the mulching films; and the mulching films can be blown to the thickness of 0.005mm and have small specific gravity, so the same amount of raw materials can produce more mulching films.

Description

【Technical field】 [0001] The invention relates to the field of biological materials, and relates to the preparation of master batches for producing biodegradable mulch films, in particular to a raw material for producing biodegradable mulch films. 【Background technique】 [0002] Agricultural mulch is an important means of production in agriculture after seeds, fertilizers and pesticides. The mulch film has a good effect of increasing temperature and keeping moisture, and can greatly increase the yield of crops. However, with the large-scale use of common plastic mulch, a large number of mulch fragments remain in the soil. With the accumulation of plastic film fragments, a large amount of residual plastic film destroys the soil structure, causing soil compaction, poor permeability, and soil fertility decline, which seriously affects the growth and production of crops and reduces crop production. If the residual plastic film per mu exceeds 22kg, the crop yield will decrease ...

AI Technical Summary

Problems solved by technology

[0005] The existing masterbatch of biodegradable mulch still has some deficiencies due to technical problems, for example: ① It cannot be recombined with polyethylene (PE) structure, it is a form of wrapping, and cannot form a network bridging structure, resulting in the degradation of degradable mulch Uneven, incomplete degradation, and residual particles or debris are likely to cause secondary pollution; ② cannot solve the balance problem of water resistance and hydrophilicity, which is manifested in that the made mulch film cannot cling to the surface and is easily blown away by the wind. The functionality of the mulch film is relatively poor; ③There are extremely high requirements on the particle size of the raw material, the blown film is thicker, consumes more materials, and costs more

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