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Preparation method of porous polymer in-situ microfiber oil-water separation material

A technology for porous polymers and separation materials, which is applied in the field of preparation of porous polymer in-situ microfiber oil-water separation materials, can solve the problems of difficult industrialization and harsh processing conditions, and achieves huge application prospects, high porosity, and excellent preparation technology simple effect

Active Publication Date: 2019-11-22
GUIZHOU MATERIAL IND TECH INSTITUE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrospinning to prepare nanofibrous membranes requires a polymer solution with a certain viscosity and conductivity, which is selective to polymers and the processing conditions are relatively harsh.
Therefore, the preparation of oil-water separation materials by this technology is still in the laboratory stage, and it is difficult to promote industrialization

Method used

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  • Preparation method of porous polymer in-situ microfiber oil-water separation material
  • Preparation method of porous polymer in-situ microfiber oil-water separation material
  • Preparation method of porous polymer in-situ microfiber oil-water separation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. A kind of preparation method of porous polymer in-situ microfiber oil-water separation material, see figure 1 , follow the steps below:

[0024] (1) Polymer a and porogenic polymer b are melt-blended to obtain the microfibrous phase, i.e. product A; specifically, blending refers to the use of a twin-screw extruder to mix and granulate to obtain the microfibrous phase resin particles (i.e. A product);

[0025] (2) In-situ microfibrillation of product A and thermoplastic elastomer polymer c through a micro-nano lamination co-extrusion device to obtain an elastomer-based in-situ microfiber composite material, namely product B; the process of in-situ microfibrillation is specific It is: when product A is extruded in the micro-nano laminated co-extrusion device, it is affected by the shear-stretch composite flow field, and evolves into fibers with a large aspect ratio, which are oriented and arranged along the flow direction, and are often cooled by warm water t...

Embodiment 2

[0040] Example 2. A method for preparing a porous polymer in-situ microfiber oil-water separation material, the steps of which are the same as steps (1) to (4) of Example 1.

[0041] In this embodiment, the raw materials used are shown in Table 4:

[0042] Table 4

[0043]

[0044] In Table 4: a is polymer a, b is porogen polymer b, c is thermoplastic elastomer polymer c, b 溶 is a good solvent for the porogenic polymer b, c 溶 It is a good solvent for thermoplastic elastomer polymer c.

[0045] The weight ratio and main parameters of the raw materials of this embodiment are shown in Table 5

[0046] table 5

[0047]

[0048] In table 5: a is polymer a, b is porogen polymer b, c is thermoplastic elastomer polymer c, A is the A product (microfibrous phase) that step (1) makes, v 辊 is the speed of the pulling roller in the micro-nano lamination co-extrusion device.

[0049] The product generated in this embodiment is shown in Table 6

[0050] Table 6

[0051]

[...

Embodiment 3

[0053] Example 3. A method for preparing a porous polymer in-situ microfiber oil-water separation material, the steps of which are the same as steps (1) to (4) of Example 1.

[0054] In this embodiment, the raw materials used are shown in Table 7:

[0055] Table 7

[0056]

[0057] In Table 7: a is polymer a, b is porogen polymer b, c is thermoplastic elastomer polymer c, b 溶 is a good solvent for the porogenic polymer b, c 溶 It is a good solvent for thermoplastic elastomer polymer c.

[0058] The weight ratio and main parameters of the raw materials of this embodiment are shown in Table 8

[0059] Table 8

[0060]

[0061] In table 8: a is polymer a, b is porogen polymer b, c is thermoplastic elastomer polymer c, A is the A product (microfibrous phase) that step (1) makes, v 辊 is the speed of the pulling roller in the micro-nano lamination co-extrusion device.

[0062] The product generated in this embodiment is shown in Table 9

[0063] Table 9

[0064]

[00...

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Abstract

The invention discloses a preparation method of a porous polymer in-situ microfiber oil-water separation material. The preparation method comprises the following steps: (1) carrying out melt blendingon a polymer a and a pore-forming polymer b to obtain a microfiber phase, namely a product A; (2) performing in-situ microfibrillation on the product A and a thermoplastic elastomer polymer c througha micro-nano laminated co-extrusion device to obtain an elastomer-based in-situ microfiber composite material, namely a product B; (3) etching the thermoplastic elastomer matrix in the product B by using a good solvent of the thermoplastic elastomer to obtain polymer a / pore-forming polymer b blend microfibers, namely a product C; and (4) etching the pore-forming polymer b in the product C by usinga good solvent of the pore-forming polymer to obtain the porous polymer an in-situ microfiber oil-water separation material. The porous polymer in-situ microfiber oil-water separation material prepared by the invention has super-hydrophobic and super-oleophylic properties, can effectively collect oil stains to realize oil-water separation, and has high oil absorption capacity. And the preparationprocess is simple, and industrial production can be realized.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a preparation method of a porous polymer in-situ microfiber oil-water separation material. Background technique [0002] Oil-water mixtures are widely found in petroleum, chemical and machinery industries, and are harmful to the ecological environment and human health. Therefore, the oil-water separation of oily sewage has become an urgent problem to be solved, and has attracted extensive attention from scholars at home and abroad. Traditional oil-water separation methods mainly include adsorption, centrifugal separation, extraction, electrochemistry, oxidation, and biodegradation. However, these methods often have low separation efficiency, complicated process, high energy consumption, easy to produce secondary pollution, and have very limited treatment effect on emulsified oil with oil particle size less than 10 μm. Compared with the traditional oil-water ...

Claims

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Application Information

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IPC IPC(8): B01D71/76B01D71/26B01D67/00B01D17/022
CPCB01D17/02B01D67/0034B01D71/26B01D71/76B01D2325/38
Inventor 罗珊珊韦良强孙静黄安荣秦舒浩
Owner GUIZHOU MATERIAL IND TECH INSTITUE