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Agricultural water-loss reducer and production process

A technology of agricultural water-retaining agent and initiator, which is applied in the fields of application, agriculture, organic fertilizer, etc., can solve problems such as difficulty in practical application, high cost of water-retaining agent, poor salt and alkali resistance, etc., and achieve good salt and alkali resistance, The effect of low cost and stable performance

Active Publication Date: 2009-08-19
北京鸿森鹏程生态农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing water-retaining agents mainly include starch, cellulose and acrylic acid according to the source of raw materials; although the starch-based water-retaining agent has a high water absorption rate, its salt and alkali resistance is very poor, and it is difficult to use it in arid areas. , especially in saline-alkali land; although cellulose-based water-retaining agents are better in salt-alkaline resistance, their water absorption rate is poor, and it is difficult to be practically applied; although the processing technology of acrylic water-retaining agents is relatively simple, they also have high Water absorption, but its salt and alkali resistance is very poor, it is difficult to be popularized and applied in arid areas, especially saline-alkali land, and the above types of water-retaining agents are expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 70 parts of acrylic acid (parts by mass), 18 parts of acrylamide, 30 parts of sodium hydroxide, 0.15 parts of crosslinking agent, 5 parts of polyvinyl alcohol, 6 parts of fiber, 10 parts of clay, and 3 parts of other such as humic coal Put into the first reaction kettle and add distilled water, stir evenly for use, the fiber is the plant fiber through carboxylation treatment; the clay is the compound soil of kaolin, montmorillonite and diatomite, and the molar ratio is 1:3:1; ②add 2 parts of alkanes and surfactants, and mix with the above materials evenly under the action of stirring; ③gelatinize 10 parts of starch in the second reaction kettle, and the starch is carboxylated Treated starch; ④Add the gelatinized starch into the first reaction kettle, and stir evenly to form a W / O suspension. The temperature of the reaction kettle is kept constant at 50-70°C and 0.5 parts of the initiator is added under the condition of nitrogen flow. The initiator described above is a c...

Embodiment 2

[0018] 100 parts of acrylic acid (parts by mass), 30 parts of acrylamide, 40 parts of sodium hydroxide, 0.5 parts of crosslinking agent, 15 parts of polyvinyl alcohol, 15 parts of fiber, 20 parts of clay, and 8 parts of other such as humic coal Put into the first reaction kettle and add distilled water, stir evenly for use, the fiber is the plant fiber through carboxylation treatment; the clay is the compound soil of kaolin, montmorillonite and diatomite, and the molar ratio is 1:3:1; ② Add 2 parts of alkanes and surfactants, and mix with the above materials evenly under the action of stirring; ③ In the second reaction kettle, 22 parts of starch are gelatinized, and the starch is carboxylated Treated starch; ④Add the gelatinized starch into the first reaction kettle, and stir evenly to form a W / O suspension. Add 2.5 parts of the initiator under the condition that the temperature of the reaction kettle is kept constant at 50-70°C under nitrogen, and the resulting The initiator ...

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Abstract

The invention discloses an agricultural water retention agent which comprises the following components according to parts by weight: 70-100 parts of acrylic acid, 30-40 parts of sodium hydroxide, 18-30 parts of acrylamide, 10-22 parts of starch, 5-15 parts of polyvinyl alcohol, 0.15-0.5 part of cross linker, 10-20 parts of clay, 6-15 parts of fiber, 0.5-2.5 part of evocating agent, 2-6 parts of alkane and surface active agent and 3-8 parts of rest components. The invention also discloses a production process of the agricultural water retention agent. The water absorbing coefficient of the agricultural water retention agent reaches 3000 times and the water absorption of 0.5min reaches 1500 times. The invention has good saline and alkaline resisting performance and long service life, integrates the advantages of two sorts of super water absorbent of a starch graft system and a synthetic polymerization system and can be biodegraded, and matters after treating are organic nutrient substances which can be absorbed by plants. The invention has simple protection process, low cost and stable performance and can be widely applied to the technical field of the water saving and moisture preservation, and the like of agricultural and forestry soils in dry lands.

Description

technical field [0001] The invention belongs to the technical field of new inorganic-organic composite polymer materials, and in particular relates to an agricultural water-retaining agent and a production process. Background technique [0002] Superabsorbent resins, also called water-retaining agents, have been widely used in many technical fields, especially in agriculture and forestry in arid areas, which have very broad application prospects in terms of water conservation and moisturizing of soil. The existing water-retaining agents mainly include starch, cellulose and acrylic acid according to the source of raw materials; although the starch-based water-retaining agent has a high water absorption rate, its salt and alkali resistance is very poor, and it is difficult to use it in arid areas. , especially in saline-alkali land; although cellulose-based water-retaining agents are better in salt-alkaline resistance, their water absorption rate is poor, and it is difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/20
Inventor 李智张卫东
Owner 北京鸿森鹏程生态农业科技股份有限公司
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