Unlock instant, AI-driven research and patent intelligence for your innovation.

A stable and efficient composite water-absorbing material and its preparation method

A water-absorbing material, high-efficiency technology, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of poor degradability of highly cross-linked resins, limited production and industrial applications, increased toxicity, etc., to achieve stability. Good, rich pore channels, regular pore channels

Active Publication Date: 2016-06-08
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these water-absorbing materials are often prepared from pure industrial raw materials such as acrylic acid, methacrylic acid, and acrylamide, which increase the toxicity; and the highly cross-linked resin has poor degradability and pollutes the environment, which limits its mass production and industrial application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A stable and efficient composite water-absorbing material and its preparation method
  • A stable and efficient composite water-absorbing material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Under stirring conditions at room temperature, after dissolving 8g P123 and 50.15g concentrated hydrochloric acid (35%) in 195.16g aqueous solution, 19.80g ethyl orthosilicate (208.33g / mol) and 0.73g 3-aminopropyl trimethoxy Silane (179.29g / mol) was also added successively, the resulting white turbid liquid was continuously stirred at 40°C for 24h, and washed three times with 500mL, 2.6(v / v)% hydrochloric acid-ethanol mixed solution to remove the template After suction filtration and separation, low-temperature vacuum drying to obtain white powder-mesoporous molecular sieve introduced with long-chain alkylamine, the pore size of the mesoporous molecular sieve is 3-20nm, and the specific surface area is 500-1500m 2 / g, the pore volume is 0.8~1.5cm 3 / g.

[0028] After dissolving 2.00 g of polyethyleneimine (with an average molecular weight of 600) in 40 ml of methanol solution, add 2.00 g of the above white powder, continue stirring for 2 hours, evaporate the solvent in a fu...

Embodiment 2

[0030] Under the condition of stirring at room temperature, after dissolving 8g P123 and 50.15g concentrated hydrochloric acid (35%) in 195.16g aqueous solution, 15.86g ethyl orthosilicate (208.33g / mol) and 1.27g 3-aminopropyl triethyl Oxyoxysilane (221.37g / mol) was also added successively, and the resulting white turbid liquid was continuously stirred at 60°C for 12h, and washed three times with 300mL, 3.0(v / v)% hydrochloric acid-ethanol mixed solution to remove the template It is separated by suction and vacuum and dried at low temperature to obtain white powder-mesoporous molecular sieve introduced with long-chain alkylamine. The pore size of the mesoporous molecular sieve is 3-20nm and the specific surface area is 500-1500m. 2 / g, the pore volume is 0.8~1.5cm 3 / g.

[0031] After dissolving 0.80g of polyethyleneimine (average molecular weight of 10000) in 40ml of methanol solution, add 3.20g of the above white powder, continue stirring for 3h, evaporate the solvent in a fume h...

Embodiment 3

[0033] Under the condition of stirring at room temperature, dissolve 9.70g cetyltrimethylammonium bromide in 50ml water, adjust the solution pH=11 with 1:1 sulfuric acid, add 17.56g ethyl orthosilicate (208.33g / mol) And 1.17g of N-aminoethyl-γ-aminopropyltriethoxysilane (264.44g / mol) were also added successively, and the resulting white turbid liquid was continuously stirred at 60°C for 24h, and 500mL, 2.6( v / v)% hydrochloric acid-ethanol mixed solution was washed three times repeatedly to remove the template, separated by suction filtration and vacuum dried at low temperature to obtain a white powder-mesoporous molecular sieve introduced with long-chain alkylamine, the pore size of the mesoporous molecular sieve is 3~ 20nm, the specific surface area is 500~1500m 2 / g, the pore volume is 0.8~1.5cm 3 / g.

[0034] After dissolving 2.00 g of polyethyleneimine (with an average molecular weight of 600) in 40 ml of methanol solution, add 2.00 g of the above white powder, continue stirr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a stable efficient composite water absorbing material which comprises a mesoporous molecular sieve used as a carrier, long-chain alkyl amine combined with a pore wall and loaded polymerized organic amine are in a pore passage of the mesoporous molecular sieve, an alkyl molecule of the long-chain alkyl amine extends in the pore passage to obstruct the loaded net-shaped polymerized organic amine into small particles, the internal agglomeration of organic amine molecules is hindered, a highly space-dispersed amino group is formed in the pore passage, so that more hydrophilic groups are exposed, and the water adsorption capacity is strengthened. The invention further discloses a preparation method of the composite water absorbing material. The composite water absorbing material uses the mesoporous molecular sieve as the carrier, the highly space-dispersed hydrophilic group, namely amino group, is formed in the pore passage of the mesoporous molecular sieve, the water adsorption capacity is very high, and the performance and the structure are stable.

Description

Technical field [0001] The invention relates to a water-absorbing material, in particular to a stable and efficient composite water-absorbing material. At the same time, the invention also discloses a preparation method of the composite water-absorbing material. Background technique [0002] Water-absorbing materials are often used in environmental protection, catalysis, medical and health, agriculture and other fields. Among them, the water-absorbent resin is a kind of functional polymer material with a spatial three-dimensional network structure after moderate crosslinking. The molecular chain contains a large number of strong hydrophilic groups such as carboxyl and hydroxyl groups, which can absorb hundreds of times its own weight. Even thousands of times the amount of water is one of the more researched and applied types. For example, the Chinese invention patent CN102382264A reported a method for preparing a cellulose-based water-absorbing material. However, these water-a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/265B01J20/28097B01J20/3085B01J20/3204B01J20/3217B01J2220/46
Inventor 周永言唐念刘洁李丽黎晓淀樊小鹏
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID