Freeze resistant sand fixing agent

Abstract

The invention discloses a freeze resistant sand fixing agent, and belongs to the technical field of sand fixing. A prepared water absorbing additive can improve the swelling performance and swelling dynamics of a composite material; absorbed water is stored in the channels, introduced carboxyl groups have a hydrophilic property, water contacting performance is enhanced, the water absorbing and water retaining performance of the sand fixing agent are improved; a microbial additive absorbs Ca<2+> from a surrounding sandy environment, then Ca<2+> combines with carbonate ions to generate mineral precipitates, as the stacking of the minerals, the density of the sandy layer is increased, the permeability is reduced, the absorbed water is sealed and stored, the cementing of sand is promoted, thesand is continuously fixed and protected; a freeze resistant additive can effectively reduce the size of pores, the transpiration rate is reduced, the water utilization rate is increased, water loss is reduced, water can be absorbed and utilized by plants, and the sand quality can be adjusted. The problems that in the prior art, the freeze resistant performance of a conventional sand fixing agentis bad and the sand fixing efficiency is bad are solved.

Description

technical field

[0001] The invention discloses a frost-resistant sand-fixing agent, which belongs to the technical field of sand-fixing. Background technique

[0002] Desertification is a major global ecological environment problem facing human beings at present, and it plagues the survival and development of human society. The ever-intensifying sandstorms and the expansion of sandy land make the ecological environment worse, engulfing human living space, and jeopardizing the development of the national economy and society. caused great harm. At the same time, there are often a series of ecological problems such as strong winds, drifting sand, surface drought, and soil erosion in the desert and the bordering areas of the desert. A series of agricultural and forestry problems caused by this have seriously hindered the growth and development of green plants and crops, resulting in shortage of seedlings, reduced production and death, wasting a lot of land resources and preciou...

Examples

preparation example Construction

[0025] The preparation method of water-absorbing additive is:

[0026] S1. Take β-mannanase and mix it with sterile water according to the mass ratio of 1~3:10~20 to obtain a mixed solution. Take acacia endosperm and add it into the mixed solution according to the mass ratio of 2~5:5~10. Swell at ℃ for 1~3h, press into tablets, then enzymolyze at 70~80℃ for 1~3h, inactivate the enzyme, dry, crush and pass through a 100-mesh sieve, and collect the sieved particles;

[0027] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 1~4:10~20, heat up to 65~70°C and stir and mix for 60~90min, add 1~3% of the sieved particles Potassium persulfate, stirred and mixed for 20~30min to obtain the stirred mixture, in parts by mass, 10~20 parts of the stirred mixture, 10~15 parts of acrylic acid, 4~8 parts of sodium hydroxide solution with a mass fraction of 20%, 30 ~40 parts of attapulgite, stirred and mixed at 40~60°C for 30~40min to obtain th...

Embodiment 1

[0038] Bacillus pasteurianus and Bacillus coerzii: both are dry powder of spores.

[0039] The preparation method of water-absorbing additive is:

[0040] S1. Take β-mannanase and mix it with sterile water at a mass ratio of 1:10 to obtain a mixed solution. Take acacia endosperm and add it to the mixed solution at a mass ratio of 2:5, swell at 50°C for 1 hour, press into tablets, and then swell at 70°C. Enzymolysis at ℃ for 1 hour, inactivating the enzyme, drying, crushing and passing through a 100-mesh sieve, and collecting the sieved particles;

[0041] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 1:10, raise the temperature to 65°C and stir and mix for 60 minutes, add potassium persulfate with 1% mass of sieved particles, and stir and mix for 20 minutes to obtain stirring Mixture, in parts by mass, take 10 parts of stirring mixture, 10 parts of acrylic acid, 4 parts of 20% sodium hydroxide solution, 30 parts of attapul...

Embodiment 2

[0052] Bacillus pasteurianus and Bacillus coerzii: both are dry powder of spores.

[0053] The preparation method of water-absorbing additive is:

[0054] S1. Take β-mannanase and mix it with sterile water at a mass ratio of 3:20 to obtain a mixed solution. Take acacia endosperm and add it to the mixed solution at a mass ratio of 5:10. Swell at 60°C for 3 hours, press into tablets, and then swell at 80°C. Enzymolysis at ℃ for 3 hours, inactivating the enzyme, drying, crushing and passing through a 100-mesh sieve, and collecting the sieved particles;

[0055] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 4:20, heat up to 70°C and stir and mix for 90 minutes, add potassium persulfate with 3% mass of the sieved particles, stir and mix for 30 minutes, and stir Mixture, in parts by mass, take 20 parts of stirring mixture, 15 parts of acrylic acid, 8 parts of sodium hydroxide solution with a mass fraction of 20%, and 40 parts of...

technical field

[0001] The invention discloses a frost-resistant sand-fixing agent, which belongs to the technical field of sand-fixing. Background technique

[0002] Desertification is a major global ecological environment problem facing human beings at present, and it plagues the survival and development of human society. The ever-intensifying sandstorms and the expansion of sandy land make the ecological environment worse, engulfing human living space, and jeopardizing the development of the national economy and society. caused great harm. At the same time, there are often a series of ecological problems such as strong winds, drifting sand, surface drought, and soil erosion in the desert and the bordering areas of the desert. A series of agricultural and forestry problems caused by this have seriously hindered the growth and development of green plants and crops, resulting in shortage of seedlings, reduced production and death, wasting a lot of land resources and preciou...

Examples

preparation example Construction

[0025] The preparation method of water-absorbing additive is:

[0026] S1. Take β-mannanase and mix it with sterile water according to the mass ratio of 1~3:10~20 to obtain a mixed solution. Take acacia endosperm and add it into the mixed solution according to the mass ratio of 2~5:5~10. Swell at ℃ for 1~3h, press into tablets, then enzymolyze at 70~80℃ for 1~3h, inactivate the enzyme, dry, crush and pass through a 100-mesh sieve, and collect the sieved particles;

[0027] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 1~4:10~20, heat up to 65~70°C and stir and mix for 60~90min, add 1~3% of the sieved particles Potassium persulfate, stirred and mixed for 20~30min to obtain the stirred mixture, in parts by mass, 10~20 parts of the stirred mixture, 10~15 parts of acrylic acid, 4~8 parts of sodium hydroxide solution with a mass fraction of 20%, 30 ~40 parts of attapulgite, stirred and mixed at 40~60°C for 30~40min to obtain th...

Embodiment 1

[0038] Bacillus pasteurianus and Bacillus coerzii: both are dry powder of spores.

[0039] The preparation method of water-absorbing additive is:

[0040] S1. Take β-mannanase and mix it with sterile water at a mass ratio of 1:10 to obtain a mixed solution. Take acacia endosperm and add it to the mixed solution at a mass ratio of 2:5, swell at 50°C for 1 hour, press into tablets, and then swell at 70°C. Enzymolysis at ℃ for 1 hour, inactivating the enzyme, drying, crushing and passing through a 100-mesh sieve, and collecting the sieved particles;

[0041] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 1:10, raise the temperature to 65°C and stir and mix for 60 minutes, add potassium persulfate with 1% mass of sieved particles, and stir and mix for 20 minutes to obtain stirring Mixture, in parts by mass, take 10 parts of stirring mixture, 10 parts of acrylic acid, 4 parts of 20% sodium hydroxide solution, 30 parts of attapul...

Embodiment 2

[0052] Bacillus pasteurianus and Bacillus coerzii: both are dry powder of spores.

[0053] The preparation method of water-absorbing additive is:

[0054] S1. Take β-mannanase and mix it with sterile water at a mass ratio of 3:20 to obtain a mixed solution. Take acacia endosperm and add it to the mixed solution at a mass ratio of 5:10. Swell at 60°C for 3 hours, press into tablets, and then swell at 80°C. Enzymolysis at ℃ for 3 hours, inactivating the enzyme, drying, crushing and passing through a 100-mesh sieve, and collecting the sieved particles;

[0055] S2. Take the sieved particles and add 0.1% sodium hydroxide solution according to the mass ratio of 4:20, heat up to 70°C and stir and mix for 90 minutes, add potassium persulfate with 3% mass of the sieved particles, stir and mix for 30 minutes, and stir Mixture, in parts by mass, take 20 parts of stirring mixture, 15 parts of acrylic acid, 8 parts of sodium hydroxide solution with a mass fraction of 20%, and 40 parts of...