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A kind of superabsorbent resin with high liquid absorption rate and its preparation method

A super absorbent resin, high-speed technology, applied in the field of functional polymer materials, can solve the problems of sensitization, irritation, low liquid absorption capacity, low liquid absorption rate, etc., to achieve safe use, excellent biocompatibility, and huge applications and the effect of developing value

Active Publication Date: 2016-01-20
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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  • A kind of superabsorbent resin with high liquid absorption rate and its preparation method
  • A kind of superabsorbent resin with high liquid absorption rate and its preparation method
  • A kind of superabsorbent resin with high liquid absorption rate and its 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 1mm.

[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 d...

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

A superabsorbent resin with a high liquid absorption rate and a preparation method thereof. According to the mass percentage, an aqueous solution of a polymer and a monomer is composed of 2-10wt% PVA, 18-26wt% PAAS and 3-9wt% AMPS, and is dissolved by heating , the application of electron beam radiation cross-linking and graft synthesis of copolymer gel, and then swollen and soaked by soaking solution, and then extracted and freeze-dried to prepare super absorbent resin. The pH value of the superabsorbent resin of the present invention, the liquid absorption capacity of physiological saline and the centrifuge liquid retention capacity have reached the international level, especially the liquid absorption capacity and the three-distilled water absorption rate are significantly better than the famous superabsorbent resin products at home and abroad ( P<0.01), ranking the international leading level; and the process is simple, excellent biocompatibility, safe to use, can be widely used in medical and sanitary products such as urinary incontinence mattresses, infant diapers and women's sanitary napkins, as well as agricultural and forestry water retention and moisturizing, etc. It has great application and development value in many fields.

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 (SuPPerAbsorbentResin, referred to as SAR) is a new type of polymer with a three-dimensional network structure and a strong hydrophilic group that has developed rapidly in recent years. It can quickly absorb a large amount of water and swell into a gel-like 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 glob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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