Method for preparing bio-based inorganic compound type water absorbent material

A technology of inorganic materials and water-absorbing materials, which is applied in the field of preparation of water-absorbing materials, can solve problems such as poor salt water absorption capacity, and achieve the effects of improving water absorption capacity, being easy to grasp and control, and widening the selection range

Inactive Publication Date: 2010-09-29
青岛生物能源与过程研究所
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no relevant patent reports on zinc oxide, titanium oxide, calcium oxide, magnesium oxide, aluminum oxide, silicon oxide or their corresponding chloride and bromide inorganic materials that do not contain active groups. In addition, domest

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] In a 500mL beaker, disperse 0.5g of nano zinc oxide in 120mL of distilled water containing 1g of silane coupling agent, stir well, slowly add 2g of hydroxypropyl guar gum to the solution under stirring conditions, continue to stir evenly, and control the temperature 60℃, after 15 minutes of nitrogen flow, 0.08g of initiator potassium persulfate, after continuous nitrogen flow for 20 minutes, add 0.06g of N, N-methylenebisacrylamide crosslinking agent dissolved acrylic acid (AA) and its 15mL of sodium salt and acrylamide (AM) mixed solution (among them AM2g), continue to pass nitrogen for 10min, react at a constant temperature for 1-6h, precipitate the product in ethanol, filter, then dry at 65°C, and crush to obtain the product. The water absorption performance test shows that the sample absorbs 167 g / g of 0.9% saline and 1450 g / g of distilled water. The appearance color of the sample is pure white.

Example Embodiment

[0024] Example 2

[0025] In a 500mL beaker, disperse 0.5g of ordinary calcium chloride in 120mL of distilled water containing 1g of silane coupling agent, stir well, and slowly add 2g of hydroxypropyl guar gum to the solution under stirring conditions, and continue to stir evenly. Temperature 45℃, after 15 minutes of nitrogen flow, 0.08g of initiator potassium persulfate / sodium bisulfite, continue nitrogen flow for 20 minutes, then add 0.08g of N,N-methylenebisacrylamide crosslinking agent dissolved in the solution Acrylic acid (AA) and its sodium salt and acrylamide (AM) mixed solution 15mL (among them AM 2g), continue to bubbling nitrogen for 10min, constant temperature reaction for 1-6h, the product is precipitated in ethanol, filtered, and then baked at 65℃ The product is obtained after drying and crushing. The water absorption performance test shows that the sample absorbs 147 g / g of 0.9% salt water and 1650 g / g of distilled water. The appearance color of the sample is pu...

Example Embodiment

[0026] Example 3

[0027] In a 500mL beaker, disperse 1g of ordinary magnesium bromide in 120mL of distilled water containing 1g of silane coupling agent, stir well, slowly add 2g of xanthan gum to the solution under stirring conditions, continue to stir evenly, and control the temperature at 60℃ After 15 minutes of nitrogen flow, 0.08g of initiator potassium persulfate, after continuous nitrogen flow for 20 minutes, add 0.06g of N,N-methylenebisacrylamide crosslinking agent acrylic acid (AA) and its sodium salt to the solution 15mL of mixed solution with acrylamide (AM) (among them 2g of AM), continue to pass nitrogen for 10min, react at a constant temperature for 1-6h, precipitate the product in ethanol, filter, then dry at 65°C, and crush to obtain the product. The water absorption performance test shows that the sample absorbs 107 g / g of 0.9% saline and 1120 g / g of distilled water. The appearance color of the sample is pure white.

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

No PUM Login to view more

Abstract

The invention provides a method for preparing a bio-based inorganic compound type water absorbent material. The method comprises the following steps of: A) adding an inorganic material in the reactor which contains 30 to 150 milliliters of aqueous solution of silane coupling agent, and stirring the mixture for 5 to 30 minutes to allow the inorganic material to adequately disperse; B) adding a bio-based material into the solution obtained by the step A in an amount of 0.7 to 3 percent based on the mass of distilled water, controlling the temperature to be between 30 and 80 DEG C, introducing nitrogen into the reactor for 15 to 30 minutes, uniformly dispersing the nitrogen, adding an initiator, continuing introducing the nitrogen into the equipment for 20 to 40 minutes, adding acrylic acid solution of a crosslinking agent and the blended solution of a sodium salt of acrylic acid and acrylamide into the solution, introducing nitrogen into the equipment for 10 to 20 minutes, performing a thermostatic reaction of the mixture for 1 to 6 hours, precipitating the product in ethanol, filtering the solution and drying the obtained product at a temperature of 65 DEG C, smashing the obtained product to obtain a target product. The prepared bio-based inorganic compound type water absorbent material has a distilled water absorptivity of more than 1,500 g/g and a saline absorptivity of 160 g/g, so the water absorbent material has good water absorptivity.

Description

Technical field [0001] The invention relates to a preparation method of a water-absorbing material, in particular to a preparation method of a bio-based inorganic composite water-absorbing material with super high water absorption. Background technique [0002] Super absorbent resin is a kind of functional polymer material with strong water-absorbing groups and a certain degree of cross-linking. It can be widely used as water-absorbing agent, water-based thickener, flocculant, etc., in women and children's products, medicine and health , Agriculture, construction and other fields have broad market prospects. In recent years, the demand in the world market, the annual demand for water-absorbing agents alone is 450,000 tons, and the demand will increase year by year. It is estimated that by 2010, the consumption of super absorbent resin in the world will reach 225~270kt / a, and the annual growth rate of world consumption will be 3.79%~5.45%. [0003] Today, when environmental protect...

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
IPC IPC(8): C08F292/00C08F2/10
Inventor 康宁宫瑞英
Owner 青岛生物能源与过程研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap