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Super absorbent resin with high absorbent velocity and preparation method

A super absorbent resin and high liquid absorption technology, applied in the field of functional polymer materials, can solve the problems of sensitization, liquid absorption ability, low liquid absorption rate, stimulation effect, etc., and achieves excellent biocompatibility, safe use, The effect of huge application and development value

Active Publication Date: 2013-10-23
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the salt resistance, liquid absorption rate and biocompatibility of superabsorbent resins still need to be further improved and improved, which is the focus and difficulty of current international superabsorbent resin research.
For example, infant diapers and women's sanitary napkins often have side leakage of urine or menstruation and other liquids during use due to their low liquid absorption capacity, especially the liquid absorption rate, and sanitary products need to be replaced at least once at night; moisturizing and pressurized moisturizing functions are relatively low Weak, the liquid often wets the clothing through the hygienic material; some polymer monomers have irritating effect, sensitization, toxicity or potential toxicity to the skin and cells, that is, the safety and biocompatibility are low

Method used

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  • Super absorbent resin with high absorbent velocity and preparation method
  • Super absorbent resin with high absorbent velocity and preparation method
  • Super absorbent resin with high absorbent velocity and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of PVA / PAAS / AMPS Radiation Copolymer:

[0032] (1) PVA is chemically pure, with a degree of polymerization of 1700 and a degree of saponification of 98%; PAAS is analytically pure, with a molecular weight of 5×10 3 ; AMPS is chemically pure with a molecular weight of 207.25.

[0033] Ingredients: PVA 6wt%, PAAS 18wt%, AMPS 6wt%, triple distilled water 70wt%.

[0034] Mix the above mixture solution evenly, place in a high-pressure steam pot, heat and dissolve at 110°C for 2 hours, and prepare a uniform and transparent solution.

[0035] (2) Quantitatively pour the homogeneous solution into a smooth disc-shaped mold, which is made of aluminum alloy, its size is determined according to the width of the electron beam irradiation, and the thickness of the solution is 1 mm.

[0036] (3) The solution in the mold should be irradiated by an electron accelerator device, and the irradiation conditions: the energy is 0.8MeV, the current is 2mA, and the total absorbed ...

Embodiment 2

[0042] Preparation of PVA / PAAS / AMPS Radiation Copolymer:

[0043] (1) PVA is chemically pure, with a degree of polymerization of 2400 and a degree of saponification of 99%; PAAS is analytically pure, with a molecular weight of 2×10 3 ; AMPS is chemically pure with a molecular weight of 207.25.

[0044] Ingredients: PVA 10wt%, PAAS 22wt%, AMPS 3wt%, triple distilled water 65wt%.

[0045] Mix the above mixture solution evenly, place in a high-pressure steam pot, heat and dissolve at 120°C for 1 hour, and prepare a uniform and transparent solution.

[0046] (2) Quantitatively pour the homogeneous solution into a smooth disc-shaped mold, which is made of aluminum alloy, its size is determined according to the width of the electron beam irradiation, and the thickness of the solution is 15mm.

[0047] (3) The solution in the mold should be irradiated by an electron accelerator device, and the irradiation conditions: the energy is 2.45MeV, the current is 14mA, and the total absorbed ...

Embodiment 3

[0053] Preparation of PVA / PAAS / AMPS Radiation Copolymer:

[0054] (1) PVA is chemically pure, the degree of polymerization is 1700, and the degree of saponification is 99%; PAAS is analytically pure, with a molecular weight of 3×10 3 ; AMPS is chemically pure with a molecular weight of 207.25.

[0055] Ingredients: PVA 2wt%, PAAS 26wt%, AMPS 9wt%, triple distilled water 63wt%.

[0056] Mix the above mixture solution evenly, place it in a high-pressure steam pot, heat and dissolve at 120°C for 2 hours, and prepare a uniform and transparent solution.

[0057] (2) Quantitatively pour the homogeneous solution into a smooth disc-shaped mold, which is made of aluminum alloy, its size is determined according to the width of the electron beam irradiation, and the thickness of the solution is 8mm.

[0058] (3) The solution in the mold should be irradiated by an electron accelerator device, and the irradiation conditions: the energy is 1.5MeV, the current is 9mA, and the total absorbe...

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Abstract

Provided are a super absorbent resin with a high absorbent velocity and a preparation method. A polymer and monomer aqueous solution composed of, by weight, 2-10 wt% of PVA, 18-26 wt% of PAAS and 3-9 wt% of AMPS is heated and dissolved. Copolymer gel is synthesized through electron beam radiation crosslinking and grafting. The copolymer gel is then subjected to swelling and immersion cleaning by an immersion cleaning liquid, and then subjected to extraction freezing and freeze-drying to obtain a super absorbent resin. The pH value, normal saline absorbent amount and centrifugal preservation amount of the super absorbent resin have reached international level, and the super absorbent resin is remarkably superior to famous super absorbent resin products (P is less than 0.01) at home and abroad especially in the absorbent amount and the absorbent velocity of triple-distilled water and is in international advanced level. The super absorbent resin has advantages of simple technology, good biocompatibility and safe usage. The super absorbent resin can be widely used in a plurality of fields of medical and health supplies such as uracratia mattresses, infant diapers, woman sanitary napkins and the like, water retention and moisture preservation of agriculture and forestry and the like. The super absorbent resin has great application and development values.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to a superabsorbent resin with a high liquid absorption rate and a preparation method thereof. Background technique [0002] Super absorbent resin (SuPPer Absorbent Resin, referred to as SAR) is a new type of polymer with a three-dimensional network structure containing strong hydrophilic groups that has developed rapidly in recent years. It can quickly absorb a large amount of water and swell into a gel. Resin with high water absorption and water retention. The development of superabsorbent resin has a history of more than 60 years. Japan, the United States and other countries have successfully developed a variety of superabsorbent resins. Japan's Sanyo Chemical is the first manufacturer in the world to research and produce water-absorbent resins in the world in 1978. At present, Japan's three major Accor water-absorbent resins account for about 55% of the glo...

Claims

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Application Information

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IPC IPC(8): C08F291/08C08F291/06C08F220/58C08F2/54
CPCC08F261/04C08F265/02
Inventor 杨占山卢祖坤李莉岳凌杨淑琴朱南康
Owner SUZHOU UNIV
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