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Preparation method of PET non-woven fabric with photocatalytic degradation function

A non-woven fabric and photocatalytic technology, which is applied in the direction of chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., to increase the amount of grafting and improve hydrophilicity Effect

Inactive Publication Date: 2017-07-25
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method to effectively graft titanium dioxide on PET non-woven fabrics.

Method used

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  • Preparation method of PET non-woven fabric with photocatalytic degradation function
  • Preparation method of PET non-woven fabric with photocatalytic degradation function
  • Preparation method of PET non-woven fabric with photocatalytic degradation function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment focuses on analyzing the influence of alkali etching time on titanium dioxide grafting.

[0061] The uniqueness of this embodiment is that the second step, the third step and the fourth step are respectively carried out by using 5 groups of PET non-woven fabrics. The 5 groups of PET non-woven fabrics are group 1-5 respectively; the alkali etching time of the PET non-woven fabrics of the 1st, 2nd, 3rd, 4th and 5th groups is 1, 2, 3, 4, 5 hours (that is, the first group 1 hour, group N for N hours, group 5 for 5 hours). The first step, the third step and the fourth step of the five groups of PET non-woven fabrics are operated in the same way.

[0062] In this embodiment, each group of PET non-woven fabrics was dried and weighed before and after the titanium dioxide grafting step, so as to calculate the grafting rate of titanium dioxide. In this embodiment, except for the alkali etching time, other parameters (such as time parameters and temperature param...

Embodiment 2

[0069] This embodiment focuses on the analysis of the influence of the concentration of tetrabutyl titanate on the grafting ratio of titanium dioxide in the fourth step, that is, the grafting step of titanium dioxide.

[0070]In this example, 6 groups of PET non-woven fabrics were used for the fourth step reaction (the first to third steps were the same), and the 6 groups of PET non-woven fabrics were grafted with titanium dioxide under different tetrabutyl titanate concentrations. They are the PET non-woven fabrics of the 6th-11th group respectively.

[0071] In the tetrabutyl titanate solution used in the titanium dioxide grafting step, the corresponding relationship between the volume ratio of tetrabutyl titanate and water and the PET non-woven fabric samples of groups 6-11 is:

[0072] The volume ratio of tetrabutyl titanate to water corresponding to the sixth group of PET non-woven fabrics is 1:100;

[0073] The volume ratio of tetrabutyl titanate to water corresponding ...

Embodiment 3

[0085] This embodiment focuses on analyzing the influence of whether acrylic acid is used on the grafting rate of titanium dioxide in the third step, that is, the nanometer wood cellulose grafting step.

[0086] In this embodiment, four groups of PET non-woven fabrics are used for the reaction, which are the 12th to 15th groups of PET non-woven fabrics. For each group of PET non-woven fabrics, a cellulose homogeneous acrylic acid solution was prepared separately, and the third step reaction was carried out respectively.

[0087] In this embodiment, the operations of the first step, the second step and the fourth step are the same. In this example, the volume ratio of tetrabutyl titanate to water in the fourth step is 5:100. In each step, unless otherwise specified in this example, other parameters (such as time parameters and temperature parameters) are Use the preferred value.

[0088] The concentration of nano-wood fibers in the cellulose homogeneous acrylic solution corre...

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Abstract

The invention discloses a preparation method of a PET non-woven fabric with a photocatalytic degradation function. The preparation method sequentially comprises a first step, a second step, a third step and a fourth step, wherein the first step is a sample preparation step and comprises non-sequential first substep and a second substep, the first substep is preparation of cationic nano-wood cellulose, and the second substep is pretreatment of the PET non-woven fabric; the second step is an alkali etching step; the third step is a nano-wood cellulose grafting step; and the fourth step is a titanium dioxide grafting step. By comprehensively utilizing technical measures of alkali etching, acrylic acid bonding, cationic nano-wood cellulose modification and the like, the PET non-woven fabric which is originally difficult to be grafted can be effectively grafted with titanium dioxide, so that the PET non-woven fabric with the photocatalytic degradation function can be prepared from a large number of waste PET non-woven fabrics of factories such as an aluminum factory and can be applied to sewage treatment so as to realize reutilization.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a method for making new materials from waste non-woven fabrics. Background technique [0002] A large amount of waste non-woven fabrics are produced in the production of aluminum factories. These non-woven fabrics are full of oil pollution. If they are not treated and piled up directly, they will pollute the environment. Waste non-woven fabrics have a large amount of discharge, light weight, and occupy a large space. The PET in it is difficult to decompose naturally; if it is handed over to a waste treatment company, the cost is very high, and if it is not used, it will cause serious pollution. In the case of global resource shortage Under the circumstances, if the waste PET non-woven fabric is reused, the consumption of petroleum can be reduced and sustainable development can be achieved. PET waste non-woven fabrics have good comprehensive performance, especially they can...

Claims

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Application Information

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IPC IPC(8): D06M15/09D06M13/203D06M11/46C08B11/14B01J31/38D06M101/32
CPCD06M11/46D06M13/203D06M15/09C08B11/14B01J31/38D06M2101/32B01J35/39
Inventor 王利娜石素宇秦爱文宋会芬辛长征李刚刘仕鹏
Owner HENAN INST OF ENG
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