Biodegradable liquid mulch film produced from papermaking waste liquid, and production method thereof

Abstract

The invention relates to a biodegradable liquid mulch film produced from papermaking waste liquid, and a production method thereof. The film is produced from papermaking waste liquid discharged from paper making industries, starch, polyvinyl alcohol, acrylic acid or methacrylic acid or acrylamide, amyl acrylate or octyl acrylate, formaldehyde or glutaral or glyoxal, and the like. According to the method, lignin is grafted with acryl; starch is grafted with acryl; lignin, starch and polyethylene glycol hydroxyl are processed through a series chemical reactions of condensation, cross-linking, and copolymerization, such that an aqueous polymer with lignin as a basic material is synthesized. Therefore, the biodegradable liquid mulch film is obtained. According to the invention, industrial papermaking waste liquid is adopted as a main material, such that the pollution caused by papermaking waste liquid is reduced, environment is protected, cost is saved, irrigation water is saved, and crop yield is improved. With the wide popularization of the biodegradable liquid mulch film, a positive effect is provided for increasing the crop yield in our nation.

Description

[0001] Field

[0002] The invention belongs to new agricultural technology, relates to environmental protection and utilization of industrial waste, in particular to a biodegradable liquid mulch film produced from papermaking waste liquid and a manufacturing method thereof. technical background

[0003] With the continuous development of agricultural modernization, the use of plastic film in rural areas has become an important means to ensure high and stable agricultural production. However, with the prolongation of the plastic film mulching cultivation period, the recovery rate of residual plastic film is low, and the amount of residual plastic film in the soil gradually increases, which easily causes plastic film pollution, that is, white pollution. First of all, the residual plastic film destroys the physical and chemical properties of the soil, causing difficulties in the growth and development of crop roots. Any soil with residual film prevents the root system from collu...

Examples

Embodiment 1

[0042] The mass distribution number of the present embodiment is as follows:

[0043] The main reaction base material is 8% (calculated on a dry basis of 100% solid content), the main reaction base material refers to straw pulp papermaking waste liquid, and what the straw pulp papermaking waste liquid used is wheat straw papermaking waste liquid with a solid content of 12%;

[0044] Other reaction base material is 8%, and other reaction base material refers to the mixture of 4% starch, 4% polyvinyl alcohol;

[0045] The graft modifier is 6%, and the graft modifier is a mixture of 4% acrylic acid, 1% octyl acrylate, and 1% acrylamide;

[0046] Initiator is 0.1%, and initiator is sodium bisulfite and potassium persulfate, and the ratio of sodium bisulfite and potassium persulfate is 1: 1;

[0047] The crosslinking agent is 0.25%, and the crosslinking agent is glutaraldehyde;

[0048] The neutralizing agent is 3% (on a dry basis of 100% solid content), and the neutralizing agent ...

Embodiment 2

[0056] The mass proportioning number of present embodiment is as follows:

[0057] The main reaction base material is 10% (calculated on a dry basis of 100% solid content), the main reaction base material refers to reed pulp papermaking waste liquid, and what the reed pulp papermaking waste liquid used is reed papermaking waste liquid with a solid content of 12%;

[0058] Other reaction base material is 6%, and other reaction base material refers to the mixture of 2% starch, 4% polyvinyl alcohol;

[0059] The graft modifier is 8%, and the graft modifier is a mixture of 6% acrylic acid and 2% octyl acrylate;

[0060] Initiator is 0.05%, and initiator is sodium bisulfite and potassium persulfate, and the ratio of sodium bisulfite and potassium persulfate is 1: 1;

[0061] The cross-linking agent is 0.5%, and the cross-linking agent is formaldehyde;

[0062] The neutralizing agent is 5% (on a dry basis of 100% solid content), and the neutralizing agent is potassium hydroxide; ...

[0001] Field

[0002] The invention belongs to new agricultural technology, relates to environmental protection and utilization of industrial waste, in particular to a biodegradable liquid mulch film produced from papermaking waste liquid and a manufacturing method thereof. technical background

[0003] With the continuous development of agricultural modernization, the use of plastic film in rural areas has become an important means to ensure high and stable agricultural production. However, with the prolongation of the plastic film mulching cultivation period, the recovery rate of residual plastic film is low, and the amount of residual plastic film in the soil gradually increases, which easily causes plastic film pollution, that is, white pollution. First of all, the residual plastic film destroys the physical and chemical properties of the soil, causing difficulties in the growth and development of crop roots. Any soil with residual film prevents the root system from collu...

Examples

Embodiment 1

[0042] The mass distribution number of the present embodiment is as follows:

[0043] The main reaction base material is 8% (calculated on a dry basis of 100% solid content), the main reaction base material refers to straw pulp papermaking waste liquid, and what the straw pulp papermaking waste liquid used is wheat straw papermaking waste liquid with a solid content of 12%;

[0044] Other reaction base material is 8%, and other reaction base material refers to the mixture of 4% starch, 4% polyvinyl alcohol;

[0045] The graft modifier is 6%, and the graft modifier is a mixture of 4% acrylic acid, 1% octyl acrylate, and 1% acrylamide;

[0046] Initiator is 0.1%, and initiator is sodium bisulfite and potassium persulfate, and the ratio of sodium bisulfite and potassium persulfate is 1: 1;

[0047] The crosslinking agent is 0.25%, and the crosslinking agent is glutaraldehyde;

[0048] The neutralizing agent is 3% (on a dry basis of 100% solid content), and the neutralizing agent ...

Embodiment 2

[0056] The mass proportioning number of present embodiment is as follows:

[0057] The main reaction base material is 10% (calculated on a dry basis of 100% solid content), the main reaction base material refers to reed pulp papermaking waste liquid, and what the reed pulp papermaking waste liquid used is reed papermaking waste liquid with a solid content of 12%;

[0058] Other reaction base material is 6%, and other reaction base material refers to the mixture of 2% starch, 4% polyvinyl alcohol;

[0059] The graft modifier is 8%, and the graft modifier is a mixture of 6% acrylic acid and 2% octyl acrylate;

[0060] Initiator is 0.05%, and initiator is sodium bisulfite and potassium persulfate, and the ratio of sodium bisulfite and potassium persulfate is 1: 1;

[0061] The cross-linking agent is 0.5%, and the cross-linking agent is formaldehyde;

[0062] The neutralizing agent is 5% (on a dry basis of 100% solid content), and the neutralizing agent is potassium hydroxide; ...

Images