Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modification method for nanometer titania

A nano-titanium dioxide and modification technology, applied in the direction of dyeing low-molecular-weight organic compounds, fibrous fillers, etc., can solve the problems of uniform dispersion, nano-titanium dioxide cannot be stably dispersed, and does not have photocatalytic performance, etc., and achieves good technical effects.

Active Publication Date: 2015-12-09
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, nano-titanium dioxide cannot be stably dispersed, uniformly dispersed, and has no photocatalytic performance in the polymer matrix, and a new nano-titanium dioxide modification method is provided

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
  • Modification method for nanometer titania
  • Modification method for nanometer titania
  • Modification method for nanometer titania

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 2, the preparation method of 2-dimethylolpropionic acid modified nano-titanium dioxide:

[0022] After calcining, 1g of nano-titanium dioxide (average particle diameter is 500nm) and 4g of dried 2,2-dimethylolpropionic acid (electron microscope as shown in Fig. figure 1 Shown) placed in 45ml isopropanol (35.35g), ultrasonic dispersion treatment for 1 hour;

[0023] Under the protection of dry nitrogen, the reaction was continued at 80°C for 24 hours;

[0024] The solid particles were separated in a centrifuge, and then the separated particles were redissolved in 30ml (23.754g) of methanol, and separated again until the solution was clear;

[0025] The finally separated 2,2-dimethylolpropionic acid-modified nano-titanium dioxide is placed in a vacuum oven for drying treatment.

[0026] The 2,2-dimethylolpropionic acid-n-titanium dioxide electron microscope picture after the coordination reaction obtained figure 2 shown.

Embodiment 2

[0028] 2, the preparation method of 2-dimethylolpropionic acid modified nano-titanium dioxide:

[0029] After calcining, place 2g of nano-titanium dioxide (average particle size is 300nm) and 6g of dried 2,2-dimethylolpropionic acid in 60ml of isopropanol, and ultrasonically disperse for 0.5 hour;

[0030] Under the protection of dry nitrogen, the reaction was continued at 70°C for 30 hours;

[0031] Separate the solid particles in a centrifuge, then redissolve the separated particles in 50ml of methanol, and separate again until the solution is clear;

[0032] The finally separated 2,2-dimethylolpropionic acid-modified nano-titanium dioxide is placed in a vacuum oven for drying treatment.

Embodiment 3

[0034] 2, the preparation method of 2-dimethylolpropionic acid modified nano-titanium dioxide:

[0035] After calcining, 1.5g of nano-titanium dioxide (average particle size is 500nm) and 5g of dried 2,2-dimethylolpropionic acid are placed in 50ml of isopropanol, and ultrasonically dispersed for 1.5 hours;

[0036] Under the protection of dry nitrogen, the reaction was continued at 90°C for 20 hours;

[0037] Separate the solid particles in a centrifuge, then redissolve the separated particles in 45ml of methanol, and separate again until the solution is clear;

[0038] The finally separated 2,2-dimethylolpropionic acid-modified nano-titanium dioxide is placed in a vacuum oven for drying treatment.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a modification method for nanometer titania. The method mainly solves the problems that existing titania cannot be stably and evenly dispersed in a polymer matrix and does not have the photocatalytic performance. According to the adopted modification method for nanometer titania, the calcinated nanometer titania and dried 2,2-dimethylolpropionic acid are placed into an alcohol solvent, ultrasonic dispersion processing is performed for 0.5-1.5 h, then, the reaction is continuously performed for 20-30 h at the temperature of 70-90 DEG C under the protection of nitrogen, then solid particles are separated out in a centrifugal machine, the separated particles are dissolved in methyl alcohol or dimethyl formamide again, separation is performed again till a solution is limpid, and the 2,2-dimethylolpropionic acid modification nanometer titania obtained through final separation is placed in a vacuum oven to be dried. According to the technical scheme, the problems are solved, and the method can be used for modification of the nanometer titania.

Description

technical field [0001] The invention relates to a method for modifying nano titanium dioxide. Background technique [0002] Nano-titanium dioxide has three crystal forms: anatase, rutile and brookite. Among them, anatase has the strongest photocatalysis, and rutile has the best thermal stability and UV resistance, which are stronger than amorphous nano-titanium dioxide. [0003] Because the surface area / particle size ratio of nanoparticles is extremely large, they are very easy to agglomerate in organic polymers, and poor compatibility leads to poor dispersion, which will greatly reduce the performance of nano-polymer composites. Therefore, the dispersion of nanomaterials has always been a key factor affecting its performance. The difficulty of adding nano-titanium dioxide to the polymer matrix is ​​how to make the nano-titanium dioxide have good dispersion, no aggregation, stable dispersion, and good photocatalytic performance. [0004] Much research has been done on how ...

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 Applications(China)
IPC IPC(8): C09C1/36C09C3/08
Inventor 王林董国胜王志强
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com