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Guar gum-acrylic acid water absorption resin coating moisture absorbing paper and preparation method thereof

A technology of water-absorbing resin and acrylic acid, which is applied in papermaking, textiles and papermaking, and fiber raw material processing. It can solve the problems of high latent heat of vaporization and high energy consumption, and achieve high moisture absorption rate, simple replacement and long storage time.

Inactive Publication Date: 2010-05-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high latent heat of vaporization of water, the energy consumption of dehumidification accounts for 20%-40% of the total energy consumption of air conditioners. This technology has the problem of high energy consumption.

Method used

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  • Guar gum-acrylic acid water absorption resin coating moisture absorbing paper and preparation method thereof
  • Guar gum-acrylic acid water absorption resin coating moisture absorbing paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 1g of guar gum in 50g of distilled water, mix 12g of acrylic acid, 22g of distilled water, neutralize with 5.33g of sodium hydroxide, add 0.02g of sodium sulfite, 0.003g of cross-linking agent N, N-methylenebisacrylamide and 0.06g Initiator ammonium persulfate, a small amount of distilled water, stirred for 10 minutes, placed in a 70°C water bath, reacted for 2 hours to make a super absorbent resin. Coating 0.05g of the prepared superabsorbent resin on one side of 0.8g wood fiber paper with a basis weight of 40g / m2 is completed by using a doctor blade coater commonly used in the papermaking industry to achieve uniform coating. Then after drying treatment, the temperature is 100±5°C, and the drying time is 45 minutes, and finally the high moisture absorption paper is obtained. Take a single sheet of high moisture-absorbing paper and put it flat in a constant temperature and humidity box at a temperature of 25°C and a humidity of 60RH for 4 hours. The weight gain...

Embodiment 2

[0028] Dissolve 1g of guar gum in 60g of distilled water, mix 4g of acrylic acid, 24g of distilled water, neutralize with 1.78g of sodium hydroxide, add 0.02g of sodium sulfite, 0.004g of cross-linking agent N, N-methylenebisacrylamide and 0.06g Initiator ammonium persulfate, a small amount of distilled water, stirred for 10 minutes, placed in a 70°C water bath, reacted for 2 hours to make a super absorbent resin. Coat 0.1g of the prepared superabsorbent resin on both sides of 0.8g wood fiber paper with a quantitative weight of 40g / m2, and then dry it at a temperature of 100±5°C for 45 minutes to obtain superabsorbent paper. trendy paper. Take a single sheet of high moisture-absorbing paper and put it flat in a constant temperature and humidity box at a temperature of 25°C and a humidity of 60RH for 4 hours. The weight gain is 0.1672g, and the moisture absorption rate is 167%.

Embodiment 3

[0030] Dissolve 1g of guar gum in 60g of distilled water, mix 10g of acrylic acid, 15g of distilled water, neutralize with 4.5g of sodium hydroxide, add 0.01g of sodium sulfite, 0.004g of cross-linking agent N, N-methylenebisacrylamide and 0.06g Initiator ammonium persulfate, a small amount of distilled water, stirred for 10 minutes, placed in a 70°C water bath, reacted for 2 hours to make a super absorbent resin. Coat 0.05g of the prepared superabsorbent resin on one side of 0.8g wood fiber paper with a quantitative weight of 40g / m2, and then dry it at a temperature of 100±5°C for 45 minutes to obtain superabsorbent paper. trendy paper. The cutting area is 0.01m 2 When the square is placed in a constant temperature and humidity box at a temperature of 25°C and a humidity of 80RH for 8 hours, it can absorb 0.102g of water, and the moisture absorption rate is 204%.

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Abstract

The invention discloses moisture absorption paper of guargum-acrylic acid water absorbing resin coating and a preparation method thereof. The invention has the preparation method that guargum is dissolved in distilled water, thereby obtaining transparent aqueous solution with 0.5 to 10 percent of mass concentration, and then the guargum is warmed up to 70 to 80 DEG C, acrylic acid, cross linking agent, sodium sulphite and sodium hydroxide neutralizing agent are added, the neutralization degree is 50 to 85 percent, the reaction is 2 to 4 hours, and then high imbibition resin is produced; the mass quality of the acrylic acid and the guargum is 4: 1 to 12: 1, the dosage of the sodium sulphite is 1 to 2 percent of the mass of the guargum; the dosage of the cross linking agent is 0.025 to 0.125percent of the dosage of the acrylic acid; after being mixed for 1 minutes, evocating agent with 0.5 to 1.5 percent of the dosage of the acrylic acid is added; subsequently, a coating machine is adopted to coat the water absorbing resin on the surface of paper, thereby obtaining the high moisture absorption paper, the moisture absorption effect of the paper can maximally reach 230 percent withina certain temperature, humidity and moisture absorption times. The moisture absorption paper has wide application in the aspect of packing and home-use.

Description

technical field [0001] The invention relates to a special paper for absorbing moisture, in particular to a moisture-absorbing paper coated with guar gum-acrylic water-absorbing resin and a preparation method thereof. Background technique [0002] With the development of society, people's demand for special paper is increasing, such as antibacterial paper, cardboard, oil-absorbing paper and anti-rust paper, etc., through post-processing of paper-based materials, endowed with special properties that ordinary paper-based materials do not have Performance, so as to obtain high-value utilization. In the south where the climate is warm, due to the humid air, it is not conducive to the storage of items. In the practice of preserving food, textiles and other articles, people have realized that the root cause of mildew is moisture. Moisture breeds mold, and damp heat intensifies its mold growth. Therefore, reducing the humidity of the air, protecting people's household items and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/16D21H21/22
Inventor 赵涛李友明万小芳王艳霞王义勇
Owner SOUTH CHINA UNIV OF TECH
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