Degradable mulching film

A technology for degrading and modifying mulch, which is applied in the field of polymer materials, can solve problems such as poor thermal insulation performance and degradation performance, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2018-06-29
姜向军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a degradable plastic film for the disadvantages of traditional plastic film, such as poor mechanical properties, thermal insulation performance and poor degradation performance.

Method used

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  • Degradable mulching film

Examples

Experimental program
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Effect test

example 1

[0021]Put (N-amidino) dodecyl acrylamide and polyethylene glycol derivatives in a single-necked flask at a mass ratio of 2:1, and add p-dichlorobenzene and poly Ferrocene, which is 0.10 times the mass of ethylene glycol derivatives, is stirred and mixed for 50 minutes at a rotational speed of 500r / min to obtain a modification additive; add polyvinyl alcohol to water at a mass ratio of 1:100 into the No. 1 beaker , after stirring and mixing with a glass rod for 30 minutes, let it stand for swelling for 4 hours, then move the No. Ethylene alcohol liquid; add gum arabic powder and water into the No. 2 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move the No. 2 beaker into a digital speed measuring constant temperature magnetic stirrer, The temperature is 100°C, the rotation speed is 500r / min, heat and stir to dissolve for 50min to obtain gum arabic; put carrageenan powder and water in a mass ratio o...

example 2

[0023] Add polyvinyl alcohol and water into No. 1 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move No. , under the condition of rotating speed of 500r / min, heat and stir to dissolve for 50min to obtain polyvinyl alcohol liquid; add gum arabic powder and water into the No. 4h, then move the No. 2 beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and heat and stir to dissolve for 50min at a temperature of 100°C and a rotation speed of 500r / min to obtain gum arabic solution; mix carrageenan powder and water according to the mass ratio Add 1:100 into the No. 3 beaker, stir and mix with a glass rod for 30 minutes, let it swell for 4 hours, and then move the No. 3 beaker into a digital speed measuring constant temperature magnetic stirrer, at a temperature of 100 ° C and a speed of 500 r / min. Heat and stir to dissolve for 50 minutes to obtain the carrageen...

example 3

[0025] Put (N-amidino) dodecyl acrylamide and polyethylene glycol derivatives in a single-necked flask at a mass ratio of 2:1, and add p-dichlorobenzene and poly Ferrocene, which is 0.10 times the mass of ethylene glycol derivatives, is stirred and mixed for 50 minutes at a rotational speed of 500r / min to obtain a modification additive; add polyvinyl alcohol to water at a mass ratio of 1:100 into the No. 1 beaker , after stirring and mixing with a glass rod for 30 minutes, let it stand for swelling for 4 hours, then move the No. Ethylene alcohol liquid; add carrageenan powder and water into No. 3 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move No. 3 beaker into a digital speed measuring constant temperature magnetic stirrer, The temperature is 100°C, the rotation speed is 500r / min, heating and stirring for 50 minutes to dissolve the carrageenan solution; put the corn cobs in a grinder and pulve...

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Abstract

The invention discloses a degradable mulching film, which belongs to the technical field of high polymer materials. The degradable mulching film is prepared through the steps of mixing (N-amidino) dodecyl acrylamide and a polyethylene glycol derivative according to the mass ratio of 1:1 to 2:1, adding paradichlorobenzene with the mass being 0.1 to 0.2 time of the mass of the polyethylene glycol derivative and ferrocene with the mass being 0.07 to 0.10 time of the mass of the polyethylene glycol derivative, stirring and mixing to obtain a modified swelling agent; putting a modified additive, polyvinyl alcohol liquid, an Arabic gum liquid, carrageenan liquid, modified corn cob powder, phospholipid and shii-takemushroom waste mushroom dreg fermentation liquor into a blender mixer, stirring and mixing at highspeedfor 30 to 50min under the condition of the rotation speed of 1000 to 1200r/min, and obtaining a mixed slurry; flow-casting the mixed slurry to the surface of a clean glass plate,then putting the clean glass plate flow-cast with the mixed slurry into a drying oven, drying and curing for 2 to 3h at the temperature of 100 to 120 DEG C, scraping a film through a scraper, and obtaining the degradable mulching film. The degradable mulching film prepared through the invention has the characteristics of excellent mechanical property, heat insulation property and degradation property.

Description

technical field [0001] The invention discloses a degradable plastic film, which belongs to the technical field of polymer materials. Background technique [0002] Film mulching has the functions of increasing temperature, retaining moisture, early maturity, increasing yield, preventing soil loss, and controlling soil salinity. It is widely used in arid and semi-arid areas in northern China and has become an important technical measure for increasing agricultural production. However, since the mulch film currently used in production is basically an ordinary plastic mulch film, its raw material is mainly polyethylene, which has a large molecular weight and stable performance. It is difficult to degrade under natural conditions and can remain in the soil for more than 200a. With the continuous use of plastic film, the amount of residual film accumulated in the farmland is increasing, which reduces the air permeability of the plow layer soil, hinders the development of crop root...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L5/00C08L99/00C08L87/00C08J5/18
CPCC08J5/18C08J2305/00C08J2329/04C08J2487/00C08J2499/00
Inventor 姜向军殷磊陈一水
Owner 姜向军
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