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A controllable mixed nanofibril filter paper and its preparation method and application

A nanofibril and filter paper technology is applied in the field of controllable mixed nanofibril filter paper and its preparation, which can solve the problems of environmental pollution, complex process, unfavorable process requirement regulation, etc. The effect of high dry strength and a wide range of particle size retention

Active Publication Date: 2019-12-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of these two filtration methods is relatively complicated, and the size of the porosity is fixed, so it can only be applied to the filtration of particles with a certain particle size.
It is not conducive to the regulation and control of process requirements when producing products with various filtration requirements. Various reagents are added in the preparation process of filter materials, which will easily cause environmental pollution after use.

Method used

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  • A controllable mixed nanofibril filter paper and its preparation method and application
  • A controllable mixed nanofibril filter paper and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of plant micronano fibril filter paper, its preparation method is as follows:

[0030] (1) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 0.1%, and then have a gap of 0.1 μm and a speed of 100 r / min for an ultrafine particle pulverizer (Japan Zengxing Industry Co., Ltd., model: MKCA6-2J) Grinding for 5 cycles under the action of , the plant micro-nano fibrils A were prepared.

[0031] (2) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 0.1%, and then grind for 25 cycles under the action of an ultrafine pulverizer with a gap of -100 μm and a speed of 1800 r / min to prepare plant micro-nano fibers Silk B.

[0032] (3) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 0.1%, and then grind it for 70 cycles under the action of an ultrafine pulverizer with a gap of -200 μm and a speed of 1800 r / min to prepare plant micro-nano fibers Silk C.

[0033] (4) Plant...

Embodiment 2

[0036] An adjustable mixed nanofibril filter paper, the preparation method of which is as follows:

[0037] (1) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 5%, and then grind it for one cycle under the action of an ultrafine pulverizer with a gap of 150 μm and a speed of 1000 r / min to prepare nanofibrils A.

[0038] (2) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 5%, and then grind for 50 cycles under the action of an ultrafine pulverizer with a gap of 0.1 μm and a rotating speed of 1500r / min to prepare nanofibrils B .

[0039](3) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 0.1%, and then grind for 50 cycles under the action of an ultrafine pulverizer with a gap of -100 μm and a speed of 2000 r / min to prepare nanofibrils c.

[0040] (4) The nanofibrils of nanofibrils A, nanofibrils B, and nanofibrils C are prepared according to the ratio of 40:20:3 to a ...

Embodiment 3

[0043] An adjustable mixed nanofibril filter paper, the preparation method of which is as follows:

[0044] (1) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 10%, and then grind for 10 weeks under the action of an ultrafine pulverizer with a gap of 100 μm and a rotating speed of 50 r / min to prepare nanofibrils A .

[0045] (2) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 10%, and then grind for 30 cycles under the action of an ultrafine pulverizer with a gap of -50 μm and a rotating speed of 1500 r / min to prepare nanofibrils B .

[0046] (3) Use coniferous wood pulp as a raw material to make pulp with a mass concentration of 10%, and then grind for 50 cycles under the action of an ultrafine pulverizer with a gap of -200 μm and a rotating speed of 2500r / min to prepare nanofibrils C .

[0047] (4) The nanofibrils of nanofibrils A, nanofibrils B, and nanofibrils C are prepared according to the ratio...

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Abstract

The invention discloses controllable mixed nano filament filter paper as well as a preparation method and application thereof. The method comprises the following steps: (1) separately preparing plantcellulose paper pulp A, B, and C with a mass concentration of 0.1 to 15 percent, and grinding by adopting an ultra-micro-particle crusher to obtain plant micro-nano filaments A, B and C, wherein a gapof the ultra-micro-particle crusher is -200 micrometers to 150 micrometers, the grinding period is 1 to 70, and the rotation speed is 100 to 2500 r / min, and when the plant cellulose paper pulp A, B and C are ground, the gap, the grinding period and the rotation speed of the ultra-micro-particle crusher are not completely same; and (2) uniformly mixing the plant micro-nano filaments A, B and C, and then performing the papermaking, thus obtaining the controllable mixed nano filament filter paper. The porosity and aperture of the filter paper can be adjusted by changing the ratio of the three nano filaments, so that the requirements of different products can be met.

Description

technical field [0001] The invention belongs to the field of filter materials, in particular to a controllable mixed nano-fibril filter paper and its preparation method and application. Background technique [0002] With the development of the times and the continuous improvement of the level of science and technology, people's demand for the types and quantities of filter materials is increasing, and higher requirements are also put forward for the types of filter materials. Now a large number of filter materials for various purposes have been developed. For example, Chinese patent application CN103706182 A discloses a method for preparing a ball-and-string composite fiber air filter material. This technology is to add silica microspheres to polysulfone spinning In the silk liquid, the spherical wire combined nanofiber membrane is prepared by electrospinning; Chinese patent application CN105903271 A discloses a preparation method of an adjustable mixed nanostructure fiber c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/02D21H11/00D21H27/08
CPCD21H11/00D21H15/02D21H27/08
Inventor 王斌贾剑李金鹏陈克复
Owner SOUTH CHINA UNIV OF TECH
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