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

Paper deacidification agent based on sodium dodecyl benzene sulfonate modified magnesium hydroxide and preparation method thereof

A technology of sodium dodecylbenzenesulfonate and magnesium hydroxide, which is applied in the fields of books, archives and chemical compositions, can solve the problems of poor dispersion, and achieve the effects of mild reaction conditions, cost reduction and high efficiency

Active Publication Date: 2019-09-17
HUBEI TAIDEANXIN INFORMATION TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the very small polarity of fluoroalkanes, the dispersion of magnesium hydroxide, magnesium oxide and other substances in them is extremely poor, so improving the dispersibility of deacidification substances in organic solvents is a key factor to improve the efficiency of deacidification agents

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
  • Paper deacidification agent based on sodium dodecyl benzene sulfonate modified magnesium hydroxide and preparation method thereof
  • Paper deacidification agent based on sodium dodecyl benzene sulfonate modified magnesium hydroxide and preparation method thereof
  • Paper deacidification agent based on sodium dodecyl benzene sulfonate modified magnesium hydroxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Disperse 2g of magnesium hydroxide powder in 398g of deionized water at 70°C and stir evenly to obtain dispersion A with a concentration of 5g / L. Add 0.25 g of sodium dodecylbenzenesulfonate into 499.75 g of absolute ethanol, and stir evenly to obtain dispersion B with a concentration of 0.5 g / L. The dispersion B was slowly added dropwise to the dispersion A, and the temperature of the mixed solution was maintained at 70°C for 2 hours of reaction. Suction filtration while hot after the reaction, repeated washing with hot ethanol at 70°C for 3 times, and then vacuum-dry the filter cake at 35°C for 24 hours to obtain modified magnesium hydroxide.

[0023] 1615g of perfluoroheptane and 32g of petroleum ether were mixed and stirred uniformly to obtain a mixed solvent. Add 2g of dried modified magnesium hydroxide to the mixed solvent, transfer the resulting mixture to a homogenizer, homogenize it for 8 minutes under the condition of 8000r / min, and then sonicate it for 30 mi...

Embodiment 2

[0025] Disperse 2g of magnesium hydroxide powder in 498g of deionized water at 75°C and stir evenly to obtain dispersion A with a concentration of 4g / L. Add 0.2 g of sodium dodecylbenzenesulfonate to 99.8 g of absolute ethanol, and stir evenly to obtain a dispersion B with a concentration of 2 g / L. The dispersion B was slowly added dropwise to the dispersion A, and the temperature of the mixed solution was maintained at 75° C. for 2 hours. Suction filtration while hot after the reaction, repeated washing with hot ethanol at 75°C for 3 times, and then vacuum-dry the filter cake at 35°C for 24 hours to obtain modified magnesium hydroxide.

[0026] 1615g of perfluoroheptane and 25g of petroleum ether were mixed and stirred uniformly to obtain a mixed solvent. Add 1.5g of dried modified magnesium hydroxide to the mixed solvent, transfer the resulting mixture to a homogenizer, homogenize it for 8 minutes under the condition of 8000r / min, and then sonicate it for 30 minutes, which ...

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 paper deacidification agent based on sodium dodecyl benzene sulfonate modified magnesium hydroxide and a preparation method thereof. Firstly, a magnesium hydroxide aqueous solution and a sodium dodecyl benzene sulfonate alcohol solution are respectively prepared, then the magnesium hydroxide aqueous solution and the sodium dodecyl benzene sulfonate alcohol solution are mixed to realize magnesium hydroxide modification, and finally the modified magnesium hydroxide is dispersed in a mixed solvent of perfluoroheptane and petroleum ether to obtain the target deacidification agent. The deacidification agent has the advantages of easily available raw materials, mild reaction conditions, simple and convenient preparation and use methods, small dosage, high efficiency, good and uniform deacidification effect.

Description

technical field [0001] The invention relates to the technical field of books, archives and chemical compositions, in particular to a paper deacidifying agent based on sodium dodecylbenzenesulfonate modified magnesium hydroxide and a preparation method thereof. Background technique [0002] At present, there are tens of thousands of precious books, calligraphy and paintings, newspapers, archives and other cultural heritage preserved in various libraries, museums, and archives in my country, most of which are written and printed by handmade paper or mechanical paper. become. With the passage of time, paper documents will gradually appear yellowing, mildew, pulverization and chipping, mainly due to the acidification of paper. The deterioration of paper materials is manifested as discoloration macroscopically, and the structure is broken (decreased mechanical strength) microscopically. [0003] Cellulose is the main component of paper. It is quite stable under neutral and weakl...

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): D21H25/18D21H21/14
CPCD21H21/14D21H25/18
Inventor 张涛黄超凡李伟吕振利童宁
Owner HUBEI TAIDEANXIN INFORMATION TECH CO LTD