Preparation method of superabsorbent resin used for high-molecular gel extinguishing agent, and extinguishing agent using superabsorbent resin

Abstract

The invention provides a method for preparing a superabsorbent resin used in a polymer gel fire extinguishing agent, comprising: mixing acrylic acid with sodium hydroxide or sodium carbonate aqueous solution to prepare a neutralizing liquid; Crosslinking agent, initiator and adhesion promoter to prepare polymerization solution; polymerize to obtain super absorbent resin; cut into particles with a diameter of 10-20mm and further make super absorbent resin with a particle size of 40-150 mesh particles. The method has simple process, and the superabsorbent resin prepared by the method is convenient to use and has excellent fire extinguishing effect.

Description

technical field [0001] The invention relates to a new method for preparing superabsorbent resin, in particular to a superabsorbent resin used in polymer gel fire extinguishing agents, a preparation method thereof, and a fire extinguishing agent using the superabsorbent resin. Background technique [0002] At present, in addition to the traditional water spray or foam fire extinguishing for Class A fires that burn solid combustibles, water-absorbent resins have also become a research hotspot. Domestic and foreign patent documents and scientific and technological documents have announced many such technologies, but there are some defects, such as: [0003] The publication number is CN1557516A, which discloses an invention patent of "superabsorbent resin water-absorbing gel fire extinguishing agent and its application". It has the deficiencies in the following aspects: ① Due to its slow dissolution rate, it takes half an hour for the fire extinguishing agent to mix with water ...

AI Technical Summary

Problems solved by technology

It has the deficiencies in the following aspects: ① Due to its slow dissolution rate, it takes half an hour for the fire extinguishing agent to mix with water to form a hydrogel, which will delay the fighter plane; equipment, so it is inconvenient to use; ③ the method of first spreading the fine powder on the surface of the part that may catch fire, and then spraying water, the procedure is cumbersome and lacks general practicability

It mainly has the following deficiencies: ① When dissolving, rapid stirring is required to make it fully swell

It has the following deficiencies: 1. use the polymer-bound water fire extinguishing agent to extinguish the fire, and the fire-extinguishing effect of a polymer-bound water fire-extinguishing agent is only equivalent to the fire-extinguishing effect of three common water fire-fighting engines, which shows that the fire-extinguishing effect is very unsatisfactory ;②Other aspects have not been introduced further

But, it exists following deficiency in this method: 1. because water-insoluble konjac is mixed into fire extinguishing water to use, the problems such as the fire extinguishing pump, hose or water gun that can cause when spraying are blocked; 2. other aspects do not make more introduction

It has the following disadvantages: the "hydrogel" added in the fire extinguishing water is granular and has a solid property. When it is sprayed through the existing standard fire extinguishing device, the device will be blocked due to the aggregation of the gel particles. Often lead to non-operational, practical use of these "hydrogels" is difficult, if not impossible, in fire field applications

It has the following deficiencies: ① The time required for the solution of the mixed solution is not specified; ② The viscosity is relatively low and the fluidity is strong, indicating that it is the same as water

It shows that the hydrogel can't be attached to the fire point, and it can't play the role of fire extinguishing and fire blocking

[0009] Shanghai Institute of Applied Technology, School of Civil Architecture and Safety Engineering, Zhou Bo published a paper in the Journal of Shanghai Institute of Applied Technology in March 2008, "Preparation of New Polymer Water System Fire Extinguishing Agent and Research on Fire Extinguishing Performance". The shortcomings of its products are : The water absorption rate is only 300g / g, which will cause high cost of use, and the heat capacity after water absorption is small, which cannot effectively extinguish the fire

[0010] In September 2008, Yu Minggao and others from Henan Polytechnic University published the paper "Preparation of Super Absorbent Resin and Test of Fire-fighting Properties" on Coal Science and Technology. The water absorption rate of the product is 200g / g, and the water absorption rate is 16g / min. 、The water retention rate is 75% after standing for 4 hours at 80°C. The product has disadvantages such as low water absorption rate and water absorption rate, and poor water retention performance.

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