CN101215207B

CN101215207B - Biochemistry fulvic acid water-loss reducer and preparation method thereof

Info

Publication number: CN101215207B
Application number: CN2008100173166A
Authority: CN
Inventors: 师进
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-18
Filing date: 2008-01-18
Publication date: 2010-06-09
Anticipated expiration: 2028-01-18
Also published as: CN101215207A

Abstract

The invention provides a process for preparing a water retention agent of fulvic acid. The process adopts acrylic acid / acrylamide, and inorganic mineral raw materials (such as attapulgite, swell soil, white sericite, kaolin and the like) as host crystals, uses aqueous solution of N, N-methylene-bisacrylamide as a cross linker, simultaneously is added with fulvic acid to be polymerized and prepared in aqueous phase condition. The invention adopts 1-10% of aqueous solution of N, N-methylene-bisacrylamide with low degree of cross linking as cross linker to be polymerized and prepared, has low consistency, is capable of directly spraying, and is convenient in use. owing to adding inorganic mineral raw materials of attapulgite and the like, the invention not only keeps the moisture retention of the water retention agent of the prior art, but also greatly reduces production costs, and owing to adding biochemistry fulvic acid, products are provided with biological nutrition and high fertilizer effect.

Description

Biochemistry fulvic acid water-loss reducer and preparation method thereof

Technical field

The invention belongs to the conservation technology field, relate to a kind of biochemical activity water-holding agent, relate in particular to a kind of biochemistry fulvic acid water-loss reducer that plant leaf surface etc. sprays that is used for.

Background technology

Water-holding agent is a kind of functional high molecule material, be administered in the soil and not only can fully absorb irrigation water or natural precipitation, effectively prevent the seepage and the loss of moisture in the soil, improve the utilization ratio of moisture, but also can promote the formation of soil agreegate, improve the interstices of soil structure, prevent erosion.Therefore, water guarantor agent is used widely in agricultural, forestry and other water saving fields.At present, to the use of water-holding agent, what be essentially soil mixedly executes, ditch spread, spreads manuer in holes, dips in root, can not spray, and its big area is promoted be restricted.

Chinese patent 02147788 discloses xanthohumic acid composite fertilizer preparation method, and product does not have the water conservation hygroscopic effect, and it is not remarkable to use effect of increasing production on dry farming and water-saving irrigation; Chinese patent 200510090362 discloses a kind of humic acid base superstrength water retaining agent and preparation method thereof, and the water-holding agent gel-strength that this method is produced is big, is unfavorable for foliage-spray, and biological activity is also relatively poor; Chinese patent 200310121061 discloses a kind of starch organic-inorganic composite water retaining agent, has reduced raw materials cost, because of fertilizer efficiency and active relatively poor, can not spray use.

Therefore, utilize water-holding agent can absorb that water in air is divided and xanthohumic acid has the raising stress resistance of plant, dwindle and closed portion plant leaf surface pore, reduce the function of blade face transpiration, the water-holding agent that produce multi-functional, low-cost, high quality, can spray is significant.

Summary of the invention

The purpose of this invention is to provide that a kind of performance is good, the novel water-retaining agent of steady quality, the biologically active that can spray and preparation method thereof.

Biochemistry fulvic acid water-loss reducer preparation method of the present invention, be that acrylamide solution and/or pure acrylic acid are joined in the blender, regulation system pH value to 5～7, be cooled to room temperature, the aqueous solution of adding system total mass 0.1～1.5% linking agent, stir, the inorganic mineral raw material that in system, adds system total mass 10～300% more successively, 10～50% biochemical fulvic acid, 0.1～20% initiator, when being warming up to 50～80 ℃, polyase 13～5 hour, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product.

When adding acrylamide soln and pure acrylic acid in blender, the mass ratio of acrylamide and pure acrylic acid is 1: 0.1～1: 0.6; The concentration of acrylamide soln is 30～40%.

The linking agent that the present invention adopts is 1～10% the N,N methylene bis acrylamide aqueous solution; The initiator that adopts is the potassium sulfite of concentration 1～10% and the aqueous solution of potassium metabisulfite, and the mass ratio of potassium sulfite, potassium metabisulfite is 1: 0.1～1: 1; The inorganic mineral raw material that adopts is any in Attapulgite, white sericite, kaolin, the wilkinite.

The present invention compared with prior art has following characteristics:

1, to adopt acrylamide and/or vinylformic acid be host in the present invention, adds Attapulgite (or white sericite, kaolin, wilkinite etc.), outside the water retention property that keeps the prior art water-holding agent, greatly reduces production cost.

2, the present invention has also added biochemical fulvic acid in preparation, makes product have biological nutrition and high fertilizer efficiency.

3,1～10% of the water-holding agent employing low crosslinking degree of the present invention N,N methylene bis acrylamide aqueous solution is that linking agent is polymerized, and viscosity is low, can directly spray, and is easy to use, helps big area and promotes.

4, the present invention adopts water solution polymerization process production, and technology is simple, and energy consumption is low, and three-waste free pollution helps accomplishing scale production.

Embodiment

Embodiment one, 45% acrylamide solution is joined in the blender, pH value to 5～7 of aqueous sodium hydroxide solution regulation system with 50%, be cooled to room temperature, add acrylamide quality 0.1%, concentration is 1% N, the N-methylene-bisacrylamide aqueous solution, stir, the Attapulgite that in system, adds system total mass 100% more successively, 10% biochemical fulvic acid, 0.1% concentration is 10% potassium sulfite solution, 0.1% concentration is 10% potassium metabisulfite solution, when being warming up to 70 ℃, polyase 13 hour, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product.

Embodiment two, a certain amount of vinylformic acid is joined in the blender, pH value to 5～7 of aqueous sodium hydroxide solution regulation system with 50%, be cooled to room temperature, add vinylformic acid quality 1%, the N of concentration 5%, the N-methylene-bisacrylamide aqueous solution, stir, the white sericite that in system, adds system total mass 300% more successively, 30% biochemical fulvic acid, 0.1% concentration 5% potassium sulfite solution, the potassium metabisulfite solution of 0.1% concentration 5%, when being warming up to 80 ℃, polymerization 4 hours, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product.

Embodiment three, acrylamide solution with 40% and pure acrylic acid join (mass ratio of acrylamide water and pure acrylic acid is 1: 0.2) in the blender, pH value to 5～7 of aqueous sodium hydroxide solution regulation system with 50%, be cooled to room temperature, add mixed system quality 1.5%, the N of concentration 1%, the N-methylene-bisacrylamide aqueous solution, stir, the kaolin that in mixed system, adds system total mass 10% more successively, 40% biochemical fulvic acid, 10% concentration is 5% potassium sulfite solution, 10% concentration is 1% potassium metabisulfite solution, when being warming up to 60 ℃, polymerization 5 hours, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product.

Embodiment four, acrylamide solution with 35% and pure acrylic acid join (mass ratio of acrylamide solution and pure acrylic acid is 1: 0.2) in the blender, pH value to 5～7 of aqueous sodium hydroxide solution regulation system with 50%, be cooled to room temperature, add mixed system quality 1%, concentration is 10% N, the N-methylene-bisacrylamide aqueous solution, stir, the wilkinite that in mixed system, adds system total mass 10% more successively, 50% biochemical fulvic acid, 10% concentration is 1% potassium sulfite solution, 10% concentration is 1% potassium metabisulfite solution, when being warming up to 50 ℃, polymerization 5 hours, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product.

Claims

1. the preparation method of a biochemistry fulvic acid water-loss reducer, be that acrylamide solution and/or pure acrylic acid are joined in the blender, regulation system pH value to 5～7, be cooled to room temperature, the aqueous solution of adding system total mass 0.1～1.5% linking agent, stir, the inorganic mineral raw material that in system, adds system total mass 10～300% more successively, 10～50% biochemical fulvic acid, 0.1～20% initiator, when being warming up to 50～80 ℃, polyase 13～5 hour, polymerization system becomes the yellow black colloid, then colloid is dried, pulverize, sieve, promptly get the biochemistry fulvic acid water-loss reducer product;

When adding acrylamide soln and pure acrylic acid in blender, the mass ratio of acrylamide and pure acrylic acid is 1: 0.1～1: 0.6; The concentration of acrylamide soln is 30～40%;

Described linking agent is 1～10% N, the N-methylene-bisacrylamide aqueous solution;

Described initiator is that concentration is 1～10% the potassium sulfite and the aqueous solution of potassium metabisulfite; The mass ratio of potassium sulfite and potassium metabisulfite is 1: 0.1～1: 1;

Described inorganic mineral raw material is any in Attapulgite, white sericite, kaolin, the wilkinite.

2. the biochemistry fulvic acid water-loss reducer of method preparation according to claim 1.