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Water filter material and its preparation method and application

A technology of water filtration and melt blown, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve problems such as unsatisfactory sewage treatment effects

Active Publication Date: 2020-12-08
北京石墨烯技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene water filter materials in the prior art usually have unsatisfactory treatment effects on sewage

Method used

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  • Water filter material and its preparation method and application
  • Water filter material and its preparation method and application
  • Water filter material and its preparation method and application

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preparation example Construction

[0049] According to one aspect of the present invention, the present invention also relates to the preparation method of the above water filter material, which comprises:

[0050] 1) prepare modified resin by A) or B) method:

[0051] A) Spray drying and assembling the graphene material liquid obtained by uniformly dispersing the modifier component and the graphene oxide component to obtain modified graphene;

[0052] Incorporating the modified graphene into the melt-blown resin matrix by physical blending;

[0053] B) Spray-drying the dispersion of the graphene oxide component to obtain a graphene assembly;

[0054] Incorporating the mixture of the modifier component and the graphene assembly into the melt-blown resin matrix by physical blending;

[0055] 2) Melt-spinning the modified resin, and further processing it into a desired shape.

[0056] In some embodiments, the spray drying temperature is 175°C-240°C, and can also be selected from 180°C-230°C, such as 190°C, 200...

Embodiment 1

[0062] 1) Preparation of raw material graphene: get the graphene oxide dispersion liquid that Hummers method makes, adjust its concentration to be diluted to 1g / L, add diethylenetriamine aqueous solution (its final concentration is 10wt% of graphene oxide), After adding ultrasonic treatment for 1 h, the modified graphene oxide was centrifuged and washed with deionized water to pH=7;

[0063] The modified graphene ultrafine powder was obtained by spray drying, the temperature was set at 200°C, the wind speed was adjusted, and the final output was 18g / h.

[0064] 2) Select a degradable PP melt-blown resin with a density of 0.88-0.91g / cm 3 , Melt index is 1500±100g / 10min. The graphene powder sample is added through the degradation process, and the addition amount is 0.02wt%, so as to obtain the graphene powder sample.

[0065] 3) Melt spinning through a 0.35mm aperture spinneret (Carson, Japan), the melt blowing temperature is 255-270°C, the feed rate is 6-15kg / h; the calender ...

Embodiment 2

[0068] 1) Preparation of raw material graphene: get the graphene oxide dispersion prepared by the Hummers method, adjust its concentration to be diluted to 1g / L, add triethylenetetramine aqueous solution (its final concentration is 20wt% of graphene oxide), add ultrasonic After 1 hour of treatment, the modified graphene oxide was centrifuged and washed with deionized water to pH=7;

[0069] The modified graphene ultrafine powder was obtained by spray drying, the temperature was set at 200°C, the wind speed was adjusted, and the final output was 18g / h to obtain a graphene powder sample.

[0070] 2) Select a degradable PP melt-blown resin with a density of 0.88-0.91g / cm 3 , the melt index is 1500±100g / 10min; the graphene powder sample is added through the degradation process, and the addition amount is 0.1wt%.

[0071] 3) Melt spinning through a 0.35mm aperture spinneret (Carson, Japan), the melt blowing temperature is 255-270°C, the feed rate is 6-15kg / h; the calender passes t...

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Abstract

The invention relates to the field of graphene composites, in particular to a water filtering material and a preparation method and application thereof. The water filtering material comprises a melt-blown resin matrix, and a modifier component and a graphene oxide component which are mixed in the melt-blown resin matrix; the graphene oxide component accounts for 0.02% to 0.2% by weight of the melt-blown resin matrix in terms of content; the modifier component accounts for 5% to 50% by weight of the graphene oxide component in terms of content; and the modifier component is used to introduce hydrocarbyl and / or substituted hydrocarbyl groups, and optional aromatic and / or substituted aromatic groups. According to the invention, the surface of graphene is modified, the characteristic of largespecific surface area of the graphene helps improve compatibility thereof with a matrix and selectively modify with highly coordinative groups, so that the capacity of the graphene to suck pollutants,particularly heavy metal ions, is improved.

Description

technical field [0001] The invention relates to the field of graphene composite materials, in particular to a water filter material and its preparation method and application. Background technique [0002] In recent years, with the development of social modernization, the water quality in many areas at home and abroad has declined, and the water treatment industry, as an important part of the construction of ecological civilization, is constantly advancing. The traditional water treatment technology system has not produced substantive or disruptive innovations, and the mainstream engineering technology is still stuck in the improvement of many biotechnologies and the grafting of physical and chemical technologies. Future water treatment technology should be based on microscopic breakthroughs, structural design, etc., with the goal of micro-regulation of the water environment in the application of micro-mechanisms, and ecological compatibility between water treatment and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/46D01F1/10D01F8/06D01F8/14B01D39/14
CPCB01D39/14D01F1/10D01F6/46D01F8/06D01F8/14
Inventor 党小飞郁博轩李炯利王旭东
Owner 北京石墨烯技术研究院有限公司
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