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Preparation process of double-degradation agricultural film

The invention relates to a technology for agricultural mulch film and a preparation process, which is applied in the field of preparation of double-degradable agricultural mulch film, and can solve the problems of non-degradation and white pollution of agricultural mulch film, and achieve the effects of inhibiting aggregation, promoting degradation and accelerating degradation rate.

Active Publication Date: 2013-08-21
HEBEI MILSON TITANIUM DIOXIDE
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the agricultural mulch film is not easy to degrade and the white pollution is serious, and provides a preparation process of coating nano-titanium dioxide and adding modified starch to prepare double-degradable agricultural mulch film

Method used

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Embodiment Construction

[0015] A preparation process of a double-degradable agricultural mulch film, the key is: the steps of preparing the double-degradable agricultural mulch film include:

[0016] a. Add titanium dioxide to absolute ethanol, sonicate for 11-15 minutes, then stir magnetically at 12-15r / min and add dilute hydrochloric acid to adjust the pH value to 3.5-3.8, add polystyrene sodium sulfonate salt solution, Adjust the pH value to 3.5-3.8, then ultrasonic for 6-10 minutes, then stir for 22-25 minutes, centrifuge, remove the supernatant and wash with water twice to obtain the first product, add the first product to deionized water, stir , and a salt solution of polydiallyldimethylammonium chloride was added dropwise, ultrasonicated for 6-10 minutes and magnetically stirred at 12-15 r / min, washed twice with deionized water after centrifugation, to generate the second product;

[0017] b. The starch and calcium carbonate are ultrafinely pulverized by a high-pressure airflow mill, and the r...

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Abstract

The invention discloses a preparation process of a double-degradation agricultural film, which is used for solving the problems that the agricultural film is not easy to degrade and serious in white pollution. The adopted technical scheme is as follows: the double-degradation agricultural film is prepared by coating nanometer titania and adding modified starch. The double-degradation agricultural film is easy to degrade, high in degradation speed and free of white pollution; and the preparation process is simple, low in cost and easy for batch production.

Description

technical field [0001] The invention belongs to the technical field of agricultural mulching film preparation, and relates to a preparation process of a double-degradable agricultural mulch film, in particular to a preparation process of a double-degradable agricultural mulch film that can solve the problem that the agricultural mulch film is difficult to degrade and has serious white pollution. Background technique [0002] In agricultural production, mulching with agricultural film not only has the functions of preserving fertilizer, preventing insects and weeds, but also can maintain soil moisture, improve water use efficiency, improve the growth environment of crops, increase crop yield and agricultural benefits. Agricultural mulch has become the third largest agricultural material after chemical fertilizers and pesticides in agricultural production. Since its application, agricultural mulch has produced huge economic and social benefits. It can increase crop yields by ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L3/02C08K13/06C08K9/10C08K3/22C08K3/26C08J5/18
Inventor 张千张川张建平
Owner HEBEI MILSON TITANIUM DIOXIDE
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