Photocatalysis compound filling material for micro pollution raw material pretreatment and preparation method thereof

A composite filler and pretreatment technology, which is applied in the directions of light water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of unsatisfactory photocatalytic efficiency, difficult industrialization, and insufficient firmness, and achieves improved photocatalytic activity. , The effect of strong fluidity and easy operation

Inactive Publication Date: 2012-04-25
CHANGZHOU UNIV +1
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned loading technology still has shortcomings such as insufficien

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
  • Photocatalysis compound filling material for micro pollution raw material pretreatment and preparation method thereof
  • Photocatalysis compound filling material for micro pollution raw material pretreatment and preparation method thereof
  • Photocatalysis compound filling material for micro pollution raw material pretreatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1: Mix 20 mg of titanate coupling agent and 10 mL of ethanol, heat to 80°C, stir uniformly, and after reacting for 3 hours, add 1% TiO by mass 2 Powder, and fully stir until the ethanol boils and volatilizes to a very small amount of solvent (about 1-2ml), and then repeatedly add the same mass ratio of ethanol. Follow the above method and repeat 2 times. Put the obtained thick colloid in an oven, adjust the temperature to 80° C., dry for 12 hours, and crush and grind the obtained solid for use.

[0026] The polypropylene raw material and pretreated TiO 2 Blended on twin screw extruder, TiO 2 The mass fraction is 8%. The material is fed into the screw groove of the screw from the feeding port, so that the polypropylene raw material is gradually melted into a melt in the screw groove. When the temperature is 180°C and the pressure is 78kPa, it is outputted and extruded by the screw. Formed into oblique rotation. The prepared composite filler has a diameter of 15-25m...

Example Embodiment

[0027] Example 2: Mix 25 mg of titanate coupling agent and 15 mL of ethanol, heat to 85°C, stir evenly, and after 4.5 hours of reaction, add 1.5% TiO by mass 2 Powder, and fully stir until the ethanol boils and volatilizes to a very small amount of solvent (about 1-2ml), and then repeatedly add the same mass ratio of ethanol. Follow the above method and repeat 3 times. Put the obtained thick colloid in an oven, adjust the temperature to 85°C, dry for 18 hours, and crush and grind the obtained solid for use.

[0028] The polypropylene raw material and pretreated TiO 2 Blended on twin screw extruder, TiO 2 The mass fraction is 9%. The material is fed into the screw groove of the screw from the feeding port, so that the polypropylene raw material is gradually melted into a melt in the screw groove. When the temperature is 190℃ and the pressure is 94kPa, the material is outputted and extruded by the screw. Formed into oblique rotation. The prepared composite filler has a diameter of...

Example Embodiment

[0029] Example 3: Mix 30 mg of titanate coupling agent and 20 mL of ethanol, heat to 90°C, stir uniformly, and after reacting for 6 hours, add 2% TiO by mass 2 Powder, and fully stir until the ethanol boils and volatilizes to a very small amount of solvent (about 1-2ml), and then repeatedly add the same mass ratio of ethanol. Follow the above method and repeat 4 times. Put the obtained thick colloid in an oven, adjust the temperature to 95°C, dry for 24 hours, and crush and grind the obtained solid for use.

[0030] The polypropylene raw material and pretreated TiO 2 Blended on twin screw extruder, TiO 2 The mass fraction is 10%. The material is fed into the screw groove from the feeding port, so that the polypropylene raw material is gradually melted into a melt in the screw groove. When the temperature is 200℃ and the pressure is 110kPa, it is outputted and extruded by the screw. Formed into oblique rotation. The prepared composite filler has a diameter of 15-25mm, a height of...

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
Diameteraaaaaaaaaa
Heightaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to an inclined helical photocatalysis compound filling material for micro pollution raw material pretreatment, which consists of polypropylene and nanometer TiO2, wherein the mass percentage of nanometer TiO2 is 8 percent to 10 percent. The invention also relates to a preparation method of the photocatalysis compound filling material, which comprises the following steps that: TiO2 is pretreated through titanate coupling agents; and the polypropylene and the pretreated TiO2 are uniformly mixed and are co-extruded and formed on a double-screw extruding machine. The photocatalysis compound filling material has the characteristics that the flowability is high, the specific surface area is large, the TiO2 combination degree is high, the photocatalysis efficiency is higher, the use period is long, the blockage is avoided, the operation is simple and convenient, and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a photocatalytic composite filler for pretreatment of slightly polluted raw water and a preparation method thereof. Background technique [0002] Photocatalytic oxidation is a way to degrade pollutants using photochemical reactions, which can be divided into two types: homogeneous and heterogeneous catalysis. In homogeneous photocatalytic degradation, Fe 2+ or Fe 3+ and H 2 o 2 As the medium, the pollutants are degraded by generating OH through the photo-Fenton reaction; the heterogeneous photocatalytic degradation is a special photosensitized oxidation with n-type semiconductor as the sensitizer. The n-type semiconductor is excited under the irradiation of incident light of a certain wavelength, and holes and free electrons are generated in its full band and conduction band, respectively. The holes generated by light have a strong ability to obt...

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): C02F1/32C02F1/72
Inventor 郭迎庆李伯平李振宇雷春生
Owner CHANGZHOU UNIV
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