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Fiber water retention agent and preparation method thereof

A water-retaining agent and fiber technology, applied in the field of fiber-based water-retaining agents and their preparation, can solve the problems of high energy consumption, high temperature, and high cost, and achieve the effects of energy saving, low cost, and short production cycle

Active Publication Date: 2014-04-09
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention requires multiple additions of sodium hydroxide and cooking requires a lot of energy
The cost is high, and the temperature of the treated straw is kept at 70°C for subsequent treatment, and the temperature that needs to be maintained is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0079] In step (I) of the preparation method of the fiber-based water-retaining agent of the present invention, microorganisms are added for the purpose of using microorganisms to microcrystallize cellulose in plant stalks under alkaline conditions.

[0080] Further, in order to microcrystallize the cellulose as much as possible, the Cellulomonas genus in step (I) includes Cellulomonas chrysogenum, Cellulomonas faecalis, Cellulomonas subleukomonas, gelatinous fiber at least one of Cellulomonas spp., Cellulomonas dinitrogenum, Cellulomonas cellulosus and Cellulomonas hygrospores.

[0081] Trichoderma: English name: trichoderma spp; Trichoderma belongs to filamentous fungi.

[0082] Further, in order to microcrystallize the cellulose as much as possible, the Trichoderma in the step (I) includes at least one of Trichoderma multispora, Trichoderma longibrachiatum, Trichoderma spp. and Trichoderma hacinata.

[0083] Further, in order to microcrystallize the cellulose as much as po...

Embodiment 1

[0127] The preparation of embodiment 1 fiber type water retaining agent

[0128] (I) Take 100g of plant straw, crush it, pass it through a 100-mesh sieve, add 70g of water, then add 1.5g of Cellulomonas moist and 0.5g of urea, mix well, and carry out the reaction. Add KOH to adjust the pH to 8. The reaction conditions are React at 10°C for 4 hours, filter to obtain fiber microcrystals;

[0129] (II) Take 100g of fiber microcrystals obtained in step (I), add 2500g of water, 300g of acrylic acid, 5g of KOH, 1g of potassium persulfate and 0.1g of butyl methacrylate, stir well, and carry out the reaction. React for 6h to obtain a gel-like polymer;

[0130] (III) Heat the gel-like polymer obtained in step (II) at 40°C for 3 hours, dry and pulverize to obtain a powdery water-retaining agent.

Embodiment 2

[0131] The preparation of embodiment 2 fiber type water retaining agent

[0132] (I) Take 100g of plant straw, crush it, pass through a 100-mesh sieve, add 60g of water, then add 2g of Cellulomonas xanthogenes and 2g of urea, mix well, and react, add NaOH to adjust the pH to 10, and the reaction condition is 15 React at ℃ for 3.5h, filter to obtain fiber microcrystals;

[0133] (II) Take 100g of fiber crystals obtained in step (I), add 3000g of water, 450g of acrylic acid, 30g of NaOH, 1.3g of sodium persulfate and 0.8g of acrylamide, stir well, and carry out the reaction. The reaction condition is to react at 15°C for 5h , to obtain a gel-like polymer;

[0134] (III) Heat the gel-like polymer obtained in step (II) at 50°C for 0.5h, dry and pulverize to obtain a powdery water-retaining agent.

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Abstract

The invention relates to a cellulose water retention agent and a preparation method thereof, belonging to the field of high polymer materials. The preparation method comprises the following steps: taking plant straws, adding water, microbes and urea, reacting, regulating the pH value to 8-11, and reacting at 10-35 DEG C for 0.5-4 hours; after the reaction finishes, filtering to obtain a fiber microcrystal; taking the fiber microcrystal, adding water, acrylic acid, an alkaline matter, an initiator and a crosslinking agent, uniformly stirring, and reacting at 10-35 DEG C for 1-6 hours to obtain a jelly polymer; and heating the jelly polymer at 40-80 DEG C for 0.5-3 hours, and drying to obtain the fiber water retention agent. The water absorption factor of the fiber water retention agent for distilled water is up to 500-850 g / g, and the water absorption factor for 0.9% brine is up to 50-100 g / g.

Description

technical field [0001] The invention relates to a fiber water-retaining agent and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] The water-retaining agent uses superabsorbent resin, which is a functional polymer material with particularly strong water absorption capacity. Non-toxic and harmless, it releases and absorbs water repeatedly, so people in agriculture compare it to a "miniature reservoir". At the same time, it can also absorb fertilizers and pesticides and release them slowly to increase fertilizer and drug effects. Superabsorbent resins are widely used in agriculture, forestry, horticulture, and building materials; in industry, they can be widely used in petrochemicals, cables, papermaking, sensors, fire extinguishers, fiber products, cosmetics, food preservation, inflatable toys, etc. [0003] Straw is the general term for the stems, leaves, and ears of mature plants. It usually refers to the remaining p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/02C08F220/06C12P19/04C12R1/01C12R1/885C12R1/125
Inventor 何其明廖立群杨锡良
Owner CHENGDU NEWSUN CROPSCI
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