Preparation method of PAA (polyacrylic acid) hydrogel adhesive

A hydrogel adhesive and polypropylene technology, applied in the direction of adhesive additives, acidic copolymer adhesives, adhesive types, etc., can solve the problems of toxic natural environment, ecological system damage, etc., and achieve broad research and development value, Easy-to-control, simple-to-operate effects

Inactive Publication Date: 2017-08-18
EAST CHINA UNIV OF SCI & TECH
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during its degradation process, some of the by-products are toxic to the natural environment, and once used in large quantities, it will cause damage to the ecosystem

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
  • Preparation method of PAA (polyacrylic acid) hydrogel adhesive
  • Preparation method of PAA (polyacrylic acid) hydrogel adhesive
  • Preparation method of PAA (polyacrylic acid) hydrogel adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare 0.2mol / L PAA (Mw=250 000), 0.1mol / L CaCl 2 20mL of the mixed aqueous solution, under vigorous stirring, 10mL 0.1mol / L Na 2 CO 3 The solution was added dropwise into the mixed solution at a rate of 1mL / min, accompanied by Na 2 CO 3 With the addition of the solution, polyacrylic acid hydrogel is gradually formed around the magnetic stirring bar. After obtaining the gel, after repeated washing, a pure polyacrylic acid gel is obtained, and the infrared spectrum is as follows: figure 1 .

[0024] After the product is prepared, it is freeze-dried to obtain a dry polyacrylic acid hydrogel, which is analyzed by a scanning electron microscope, as shown in the attached figure 2 shown. The obtained gel film was dried at room temperature, and the obtained gel film was as attached image 3 shown.

Embodiment 2

[0026] Prepare 0.2mol / L PAA (Mw=100 000), 0.1mol / L CaCl 2 20mL of the mixed aqueous solution, under vigorous stirring, 10mL 0.1mol / L Na 2 CO 3 The solution was added dropwise into the mixed solution at a rate of 1mL / min, accompanied by Na 2 CO 3 With the addition of the solution, polyacrylic acid hydrogel is gradually formed around the magnetic stirring bar. After obtaining the gel, after repeated washing, a pure polyacrylic acid gel is obtained.

Embodiment 3

[0028] Prepare 0.1mol / L PAA (Mw=250 000), 0.1mol / L CaCl 2 20mL of the mixed aqueous solution, under vigorous stirring, 10mL 0.1mol / L Na 2 CO 3 The solution was added dropwise into the mixed solution at a rate of 1mL / min, accompanied by Na 2 CO 3 With the addition of the solution, polyacrylic acid hydrogel is gradually formed around the magnetic stirring bar. After obtaining the gel, after repeated washing, a pure polyacrylic acid gel is obtained.

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 relates to a preparation method of a PAA (polyacrylic acid) hydrogel adhesive. A certain concentration of PAA-CaCl2 aqueous solution is prepared, a certain concentration of Na2CO3 solution is dropwise added to a mixed solution with violent stirring, and PAA hydrogel is gradually produced around a magnetic stirrer with the addition of the Na2CO3 solution; after the hydrogel is obtained, pure PAA hydrogel is obtained through repeated washing; the molecular weight of PAA is 100,000-250,000; the concentration of PAA is 0.1-0.2 mol / L. The adhesive has good adhesion performance in both dry and wet states. Meanwhile, after curing, a hydrogel film shows excellent light transmittance performance. The preparation method of the hydrogel adhesive is simple, raw materials are easy to obtain, and the hydrogel adhesive has wide application prospects and development value in bio-medical treatment, optical device adhesion and other fields.

Description

technical field [0001] The invention relates to a new type of polyacrylic acid hydrogel adhesive, specifically, the inorganic material amorphous calcium carbonate is used as a crosslinking agent, and the crosslinking of amorphous calcium carbonate and polyacrylic acid is realized through electrostatic interaction to obtain a hydrogel adhesive agent, which belongs to the field of new material technology. Background technique [0002] In recent years, adhesives have played an increasingly important role in people's production and life applications, including automobile manufacturing, electronic device industry, biomedical industry and so on. Among them, cyanoacrylate adhesives are the most widely used adhesives because of their strong adhesive properties and fast curing bonding. However, in its degradation process, some by-products are toxic to the natural environment, and once used in large quantities, it will cause damage to the ecosystem. Therefore, in people's daily prod...

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): C09J133/02C09J11/04C08J3/075C08J3/24
CPCC08J3/075C08J3/24C08J2333/02C08K2003/265C09J11/04C09J133/02
Inventor 徐益升郭旭虹孙胜童李昂
Owner EAST CHINA UNIV OF SCI & TECH
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