This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0053] Example 1 Preparation of Nano Attapulgite Modified by TitanateCoupling Agent
[0054] Soak 10 g of attapulgite in toluene containing 4wt% isopropyltris(dioctylpyrophosphate acyloxy) titanate, the dosage of titanatecoupling 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.
[0056] 1. Dry the attapulgite nano-attapulgite modified by titanatecoupling 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-aluminapowder, 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 .
[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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
particle diameter
aaaaa
aaaaa
porosity
aaaaa
aaaaa
porosity
aaaaa
aaaaa
Login to View More
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 ceramicmicrofiltration 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 metaloxide nanofibers. Advanced Materials, 2007,19: 785-790), not only has the inherent high te...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More