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Antibacterial reduced graphene oxide modified polypropylene melt-blown water purification filter element

A polypropylene meltblown, water purification filter technology, used in alkali metal oxides/hydroxides, sterilization/microdynamic water/sewage treatment, bactericides, etc. Use and other problems to achieve the effect of lasting antibacterial effect

Active Publication Date: 2018-06-12
NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after a period of use, the filtered pollutants gradually accumulate on the surface and inside of the filter element, which provides a natural soil for the growth of various bacteria and poses a potential threat to the health of family members.
In addition, the filtration principle of the existing polypropylene melt-blown filter element is only simple physical isolation by means of melt-blown ultra-fine fibers, without any adsorption, neutralization and other functions, and has almost no effect on organic matter and residual chlorine in the water. The use of this product alone is limited

Method used

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  • Antibacterial reduced graphene oxide modified polypropylene melt-blown water purification filter element

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Embodiment 1

[0033] This embodiment provides a method for preparing an antibacterial reduced graphene oxide modified polypropylene meltblown water purification filter element, and the specific steps are as follows:

[0034] 1. Disperse graphene oxide GO (prepared by the improved Hummers method) in deionized water under ultrasonic action at room temperature, wherein the mass ratio of the graphene oxide to deionized water is about 1:500;

[0035] 2. Dissolve an appropriate amount of n-dodecyl methyl silane in ethanol at room temperature, and mix with magnetic stirring, wherein the mass ratio of n-dodecyl methyl silane to ethanol is about 1:50;

[0036] 3. Mix the solutions prepared in steps 1 and 2 according to a mass ratio of 2:1, then heat up to 70°C, and react with magnetic stirring for 1 hour to obtain silane graft-modified graphene oxide;

[0037] 4. Add a small amount of hydrazine hydrate and ammonia water to the solution prepared in step 3, where the mass ratio of hydrazine hydrate and ammonia...

Embodiment 2

[0045] This embodiment provides a method for preparing an antibacterial reduced graphene oxide modified polypropylene meltblown water purification filter element, and the specific steps are as follows:

[0046] 1. Disperse graphene oxide GO (prepared by the improved Hummers method) in deionized water under ultrasonic action at room temperature, wherein the mass ratio of the graphene oxide to deionized water is about 1:500;

[0047] 2. Dissolve an appropriate amount of n-dodecyl methyl silane in ethanol at room temperature, and mix with magnetic stirring, wherein the mass ratio of n-dodecyl methyl silane to ethanol is about 1:50;

[0048] 3. Mix the solutions prepared in steps 1 and 2 according to a mass ratio of 2:1, then heat up to 70°C, and react with magnetic stirring for 1 hour to obtain silane graft-modified graphene oxide;

[0049] 4. Add a small amount of hydrazine hydrate and ammonia water to the solution prepared in step 3, where the mass ratio of hydrazine hydrate and ammonia...

Embodiment 3

[0057] This embodiment provides a method for preparing an antibacterial reduced graphene oxide modified polypropylene meltblown water purification filter element, and the specific steps are as follows:

[0058] 1. Disperse graphene oxide GO (prepared by the improved Hummers method) in deionized water under ultrasonic action at room temperature, wherein the mass ratio of the graphene oxide to deionized water is about 1:500;

[0059] 2. Dissolve an appropriate amount of n-dodecyl methyl silane in ethanol at room temperature, and mix with magnetic stirring, wherein the mass ratio of n-dodecyl methyl silane to ethanol is about 1:50;

[0060] 3. Mix the solutions prepared in steps 1 and 2 according to a mass ratio of 2:1, then heat up to 70°C, and react with magnetic stirring for 1 hour to obtain silane graft-modified graphene oxide;

[0061] 4. Add a small amount of hydrazine hydrate and ammonia water to the solution prepared in step 3, where the mass ratio of hydrazine hydrate and ammonia...

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Abstract

The invention relates to an antibacterial reduced graphene oxide modified polypropylene melt-blown water purification filter element which is prepared from the following components byin mass percent:76.36-97.95% of polypropylene, 0.04-4.45% of silane modified reduced graphene oxide and 2-20% of active carbon. The modified reduced graphene oxide is used for modifying polypropylene resin, and the water purification filter element melt and blown with the polypropylene resin has good antibacterial performance and brings a higher-level guarantee for use safety of a water purifier; and meanwhilefurthermore, superfine active carbon powder is uniformly sprayed along with air flow and adheres to the surface of uncured fusedmolten polypropylene to form superfine fiber coated with the active carbonpowder, thereby greatly enhancing the filtration capacity of the melt-blown filter element to organic substances and residual chlorine. The high antibacterial activity of the graphene and the high adsorption capacity of the active carbon are artfully loaded into the polypropylene melt-blown filter element simultaneously, so that the comprehensive filtering effect and the added value of the productare greatly improved, and the market prospect is good.

Description

Technical field [0001] The present invention relates to the technical field of water purification filter elements, in particular to an antibacterial reduced graphene oxide modified polypropylene meltblown water purification filter element. Background technique [0002] Polypropylene (PP) melt blown filter element is widely used as the primary filter element of household water purifiers. It has many advantages such as low price, safety and non-toxicity. However, after a period of use, the filtered pollutants gradually accumulate on the surface and inside of the filter element, which provides natural soil for the growth of various bacteria and brings potential threats to the health of family members. In addition, the filtering principle of the existing polypropylene melt-blown filter element is simply physical isolation by means of melt-blown ultra-fine fibers, without any adsorption, neutralization and other functions, and it has almost no effect on organic matter and residual chl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/02B01J20/26B01J20/28B01J20/30C02F1/00C02F1/28C02F1/50A01N27/00A01N59/00A01P1/00A01P3/00
CPCA01N27/00A01N59/00B01D39/02B01D2239/02B01D2239/0407B01D2239/0442B01D2239/10B01J20/20B01J20/261B01J20/28023C02F1/001C02F1/281C02F1/283C02F1/285C02F1/50
Inventor 沙嫣沙晓林
Owner NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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