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Polytetrafluoroethylene (PTFE) membrane material capable of realizing catalytic degradation function by grafting photocatalyst and application of PTFE membrane material

A catalytic degradation and photocatalyst technology, which is applied in applications, household appliances, chemical instruments and methods, etc., to achieve the effect of low surface energy, large air permeability, and increased catalytic degradation function

Inactive Publication Date: 2013-11-20
SHANGHAI FENGDU MOBANG FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Whether it is the first method or the second method, the photocatalyst is fixed on the surface of the carrier. In the indoor air purification, there will inevitably be detachment, and even cause the photocatalyst to become a new pollution factor affecting indoor air quality.

Method used

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  • Polytetrafluoroethylene (PTFE) membrane material capable of realizing catalytic degradation function by grafting photocatalyst and application of PTFE membrane material
  • Polytetrafluoroethylene (PTFE) membrane material capable of realizing catalytic degradation function by grafting photocatalyst and application of PTFE membrane material
  • Polytetrafluoroethylene (PTFE) membrane material capable of realizing catalytic degradation function by grafting photocatalyst and application of PTFE membrane material

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Embodiment 1

[0025] Such as figure 1 As shown, the photocatalyst PTFE membrane 1 is grafted on the PET base material 2 by a special process, and the thickness of the filter material after lamination is 1.8mm, and a filter bag is made. Manufacture of photocatalyst PTFE fiber gap membrane 1: First, nano-sized TiO 2 Blend and mix with 18-alkane solvent until it is transparent, and complete the first step of combining photocatalyst with polytetrafluoroethylene; Next, the UV254 light synthesis process is used to form a resin after polymerization, so that the photocatalyst nanoparticles are evenly distributed in the PTFE resin; finally, the photocatalyst PTFE film with a cracked pore structure is formed by calendering, extrusion, biaxial stretching and other processes. , At the same time realize the uniform grafting of nano-TiO2 in the spatial structure of the PTFE fiber gap membrane.

[0026] Application 1. The above-mentioned membrane material is laminated with PP to make a filter net, which...

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Abstract

The invention relates to a polytetrafluoroethylene (PTFE) fiber clearance membrane material capable of realizing a catalytic degradation function by grafting a photocatalyst. The PTFE membrane material consists of a photocatalyst PTFE membrane and a base material, wherein the photocatalyst PTFE membrane covers the surface of the base material and consists of PTFE and the photocatalyst; the photocatalyst is uniformly grafted to a space structure of a fiber clearance membrane of the PTFE; the photocatalyst is a photo semiconductor material which is represented by nano-grade titanium dioxide and has a photocatalysis function; the particle size of the photocatalyst is 4-60nm. The photocatalyst PTFE membrane disclosed by the invention remains the characteristics of PTFE membrane ventilating cloth with high water permeation property, high ventilating property, low resistance, high micro-particle retention rate, high temperature resistance, strong acid resistance, strong alkaline resistance, organic solvent resistance, oxidant resistance, aging resistance, zero stickness, noninflammability, non-toxicity and the like; the catalytic degradation function of the photocatalyst is realized; pollutants such as formaldehyde, benzene, methylbenzene, xylene, ammonia and total volatile organic compound can be effectively degraded; the PTFE membrane material has high-efficiency and broad-spectrum disinfection property and can degrade toxins discharged by germs or fungus and perform harmless treatment on the toxins.

Description

technical field [0001] The invention relates to a PTFE membrane material grafted with a photocatalyst catalyst to increase the catalytic degradation function and an application thereof. Background technique [0002] Photocatalyst [Photocatalyst] is a compound word of light [Photo=Light] + catalyst (catalyst) [catalyst]. Photocatalyst is a general term for photo-semiconductor materials with photocatalytic function represented by nano-scale titanium dioxide. It is currently one of the safest materials for indoor environmental pollution control in the world. [0003] Typical TiO 2 Immobilization method of photocatalyst TiO 2 There are two ways to fix the photocatalyst, one is to prepare the highly active TiO 2 The powder is mixed with a solvent, and the powder TiO is formed into a film by dipping or spin coating or spraying 2 Immobilized on the surface of an appropriate carrier; the second is to use a precursor (such as ethoxytitanium, etc.) to go through a series of physic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D53/86B01D46/00A61L9/18E04F13/077A47B96/20
Inventor 曹天民杨明
Owner SHANGHAI FENGDU MOBANG FILM TECH
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