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Membrane-making solution for attapulgite-based ceramic micro-filtration membrane

一种凹凸棒石、制膜液的技术，应用在陶瓷制品、膜、超滤等方向，能够解决难分离、易团聚、难分散等问题，达到避免团聚、避免难分离、实现陶瓷膜孔径的效果

Active Publication Date: 2019-06-14
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in use, there are still disadvantages such as easy agglomeration in the preparation process and difficulty in dispersing and separating during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1 Preparation of Nano Attapulgite Modified by Titanate Coupling Agent

[0054] Soak 10 g of attapulgite in toluene containing 4wt% isopropyl tris(dioctylpyrophosphate acyloxy) titanate, the dosage of titanate coupling agent is 2.2% of the mass of attapulgite, and the soaking time is 6h, the temperature is 30°C; after modification, filter, wash and dry.

Embodiment 2

[0055] Example 2 Preparation of Ceramic Microfiltration Membrane

[0056] 1. Dry the attapulgite nano-attapulgite modified by titanate coupling agent at 105°C to constant weight, and crush it through a 200-mesh sieve; take 100g of pure water and put it in a conical flask, add 0.8g of melamine, and add 0.5g The modified nano-attapulgite is ultrasonicated for 10 minutes, fully stirred, heated to 81°C, stirred and refluxed for 2 hours, then added 0.8g of nano-alumina powder, 0.2g of polyethyleneimine, and 10g of methyl cellulose, and dispersed evenly by ultrasonic Finally, the attapulgite-graphite-like phase carbon nitride ceramic microfiltration membrane membrane-making liquid is prepared.

[0057] 2. On the self-made film coating device, the tubular alumina support is coated with a film for 40 seconds by dipping method, and the outer film is applied to obtain the attapulgite-graphite-like phase carbon nitride ceramic microfiltration membrane wet film .

[0058] 3. The attapul...

Embodiment 3

[0060] Example 3 Preparation of Microfiltration Membrane

[0061] 1. Dry the attapulgite nano-attapulgite modified by titanate coupling agent at 105°C to constant weight, and crush it through a 200-mesh sieve; take 100g of pure water and put it in a conical flask, add 0.8g of melamine, and add 0.5g The modified nano-attapulgite is ultrasonicated for 10 minutes, fully stirred, heated to 81°C, stirred and refluxed for 2 hours, then added 0.8g of nano-alumina powder, 0.2g of polyethyleneimine, and 10g of methyl cellulose, and dispersed evenly by ultrasonic Finally, the attapulgite-graphite-like phase carbon nitride ceramic microfiltration membrane membrane-making liquid is prepared.

[0062] 2. On the self-made film coating device, the tubular alumina support is coated with a film for 60 seconds by the dipping method, and the outer film is used to obtain the attapulgite-graphite-like carbon nitride ceramic microfiltration membrane wet film .

[0063] 3. The attapulgite-graphite...

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PUM

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Abstract

The invention relates to a membrane-making solution for an attapulgite-based ceramic micro-filtration membrane and belongs to the technical field of membrane separation materials. The membrane-makingsolution comprises attapulgite with surface grafted with melamine, ceramic material particles, dispersing agent, thickening agent and water. A unique nanofiber structure of attapulgite is used as a carrier and graphite-like carbon nitride can be uniformly loaded on the surface of carrier, so that the defects of agglomeration and difficulty in separation of graphite-like carbon nitride can be avoided, the photocatalytic performance of the graphite-like carbon nitride can be more effectively promoted, anti-pollution and self-cleaning of membrane can be realized and economic efficiency of membrane separation process can be promoted.

Description

technical field [0001] The invention relates to an attapulgite-based ceramic microfiltration membrane membrane-making solution, which belongs to the technical field of membrane separation materials. Background technique [0002] With its excellent material properties (high temperature resistance, high pressure resistance, corrosion resistance, etc.), the ceramic membrane shows its unique advantages in many harsh application systems, and has become one of the fastest-growing and most promising varieties in the membrane field. It is an ideal membrane material for chemical and petrochemical applications. Compared with ceramic membranes prepared by oxide ceramic particles, separation membranes prepared on porous supports using ceramic fibers (such as titania fibers and alumina fibers) (X.B. Ke, H.Y. Zhu, X.P.Gao, et al. High-performance ceramic membranes with a separation layer of metal oxide nanofibers. Advanced Materials, 2007,19: 785-790), not only has the inherent high te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/14B01D71/02B01D67/00B01J27/24C02F1/44C02F1/30C02F101/30
CPCB01D61/147B01D69/125B01D71/02B01D2325/10C04B35/10C04B35/62218C04B38/08C04B2235/349C04B2235/3856C04B2235/48
Inventor 薛爱莲周守勇赵宜江魏东阳李梅生邢卫红吴飞跃张莉莉褚效中张艳黄进
Owner HUAIYIN TEACHERS COLLEGE
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