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Porous material with micro-nano structure and preparation method of porous material

A technology of porous materials and micro-nano structures, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve problems such as high cost, complicated preparation process of porous materials, and high energy consumption. Achieve high porosity, excellent printing and forming performance, and a wide range of adsorbed substances

Inactive Publication Date: 2018-02-27
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned background and problems, the purpose of the present invention is to solve the problems of complex preparation process, high energy consumption and high cost of existing porous materials, and provide a porous material with micro-nano structure and its preparation method

Method used

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  • Porous material with micro-nano structure and preparation method of porous material

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Effect test

Embodiment 1

[0031] 1. A porous material with a micro-nano structure, characterized in that, according to the weight percentage formula:

[0032] PLA65

[0033] PVA 20

[0034] TPU 6

[0035] Ethylene glycol 7

[0036] Talc powder 2.

[0037] 2. The preparation method of the above-mentioned porous material with a micro-nano structure, comprising the following steps:

[0038] A. After mixing PLA, PVA, TPU, ethylene glycol and talcum powder, it is granulated by screw melt extrusion;

[0039] B. The obtained pellets are drawn into 3D printing wires by a wire machine;

[0040] C. Print the 3D printing wire into a specific structure through a 3D printer with a nozzle diameter of 0.1mm;

[0041] D. Dissolve the specific structure in water at a temperature of 40°C for 60 minutes to obtain a porous material with cylindrical pores mainly and a pore size distribution of 0.2-5 μm (such as figure 1 shown).

Embodiment 2

[0043] 1. A porous material with a micro-nano structure, characterized in that, according to the weight percentage formula:

[0044] PLA70

[0045] PVA 15

[0046] PCL 8

[0047] Polyethylene glycol 5.8

[0048] calcium oxide 1.2.

[0049] 2. The preparation method of the above-mentioned porous material with a micro-nano structure, comprising the following steps:

[0050] A. After mixing PLA, PVA, PCL, polyethylene glycol and calcium oxide, granulate through screw melt extrusion;

[0051] B. The obtained pellets are drawn into 3D printing wires by a wire machine;

[0052] C. Print the 3D printing wire into a specific structure through a 3D printer with a nozzle diameter of 0.2mm;

[0053] D. Dissolving the specific structure in water at a temperature of 50° C. for 30 minutes to obtain a porous material with mainly cylindrical pores and a pore size distribution of 0.1-4 μm.

Embodiment 3

[0055] 1. A porous material with a micro-nano structure, characterized in that, according to the weight percentage formula:

[0056] PLA 58

[0057] PVA 26

[0058] PCL 5

[0059] Glycerin 7.5

[0060] Magnesium hydroxide 3.5.

[0061] 2. The preparation method of the above-mentioned porous material with a micro-nano structure, comprising the following steps:

[0062] A. After mixing PLA, PVA, PCL, glycerin and magnesium hydroxide, granulate through screw melt extrusion;

[0063] B. The obtained pellets are drawn into 3D printing wires by a wire machine;

[0064] C. Print the 3D printing wire into a specific structure through a 3D printer with a nozzle diameter of 0.2mm;

[0065] D. Dissolve the specific structure in water at a temperature of 50° C. for 55 minutes to obtain a porous material with mainly flat-shaped pores and a pore size distribution of 0.3-6 μm.

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Abstract

The invention discloses a porous material with a micro-nano structure and a preparation method of the porous material. The problems of the existing porous material of complex preparation process, highenergy consumption, high cost and the like are solved, and the porous material with the micro-nano structure is prepared finely by adopting a rapid prototyping manufacturing frequency-division multiplexing technology. The technical scheme is described as follows: 1, the formula comprises the following ingredients by weight percent: 55-85% of polylactic acid, 10-30% of a pore-forming agent, 2-12%of a toughening agent, 1-10% of a plasticizer and 1-5% of a stabilizer; 2, the preparation method comprises the following steps: mixing, melting and extruding the polylactic acid and all the additives, so as to prepare a 3D printing wire, printing the 3D printing wire into a specific structure by adopting the FDM technology, and performing water treatment finally, so as to obtain the porous material with the micro-nano structure. The prepared porous material is high in porosity, controllable in structure and simple and efficient in preparation method and has no secondary pollution, so that theporous material can be applied for sewage treatment.

Description

technical field [0001] The invention relates to a porous material with a micro-nano structure and a preparation method thereof. Background technique [0002] With the acceleration of global industrialization, the situation of water pollution is becoming more and more serious. How to improve the level of wastewater treatment, alleviate wastewater pollution and water resource stress has become a hot spot in the field of water treatment today. The main cause of water pollution is the discharge of organic pollutants and heavy metal ions. On the one hand, it will directly pollute water sources and cause a large amount of waste water, which will make water resources tense. On the other hand, it will threaten human health through the aggregation effect of biological chains. Therefore, water pollution control and governance has become a top priority. At present, many technologies are applied to water pollution purification treatment, such as adsorption, precipitation, electrolysis...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/26B01J20/28054B01J20/28083B01J20/28085C02F1/285C02F2101/20C02F2101/30
Inventor 夏新曙林鸿裕钱庆荣肖荔人杨松伟陈庆华黄宝铨
Owner FUJIAN NORMAL UNIV
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