Organic and inorganic microcapsule coating expansible graphite preparation method
A technology of expanded graphite and microcapsules, which is applied in the preparation of microcapsule preparations and microspheres, can solve the problems of life and property threats, toxic smoke generation, and difficulty in extinguishing, and achieve improved compatibility, strong operability, and increased expansion volume effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0026] 1) Add 5 parts of expandable graphite with an average particle size of 100 μm to 100 parts of water, and ultrasonically sonicate for 60 minutes, then add it to a three-necked flask for stirring, heat to 50°C, add 20 g of aluminum sulfate aqueous solution, stir for 30 minutes, drop Add a certain amount of 10% Na 2 CO 3 Adjust the pH of the aqueous solution to 7 and keep stirring for 1.5 hours;
[0027] 2) Add 40 parts of melamine formaldehyde resin solution into the flask, stir and disperse at 50°C, stir for 15 minutes, then cool to room temperature, adjust the pH value to 3 with acetic acid, slowly heat up to 50°C, and stir for 60 minutes, cool, and use 10%Na 2 CO 3 The pH of the aqueous solution is adjusted to be 7;
[0028] 3) The mixture obtained in 2) was left to stand for 6 hours, then suction-filtered, washed, and dried at 60°C to obtain expandable graphite coated with melamine formaldehyde-aluminum hydroxide.
example 2
[0030] 1) Add 5 parts of expandable graphite with an average particle size of 50 μm to 100 parts of water, and ultrasonically sonicate for 30 minutes, then add it to a three-necked flask for stirring, heat to 50°C, add 30 parts of aluminum sulfate aqueous solution, and stir for 30 minutes, A certain amount of 10% Na was added dropwise 2 CO 3 Adjust the pH of the aqueous solution to 8 and keep stirring for 2 hours;
[0031] 2) Add 20 parts of melamine formaldehyde resin solution into the flask, stir and disperse at 60°C, stir for 20min, then cool to room temperature, adjust the pH value to 4 with acetic acid, slowly heat up to 60°C, and stir for 90min, cool, use 10%Na 2 CO 3 The pH of the aqueous solution is adjusted to be 8;
[0032] 3) The mixture obtained in 2) was left to stand for 6 hours, then suction-filtered, washed, and dried at 60°C to obtain expandable graphite coated with melamine formaldehyde-aluminum hydroxide.
example 3
[0034] 1) Add 30 parts of expandable graphite with an average particle size of 200 μm to 100 parts of water, and ultrasonically sonicate for 90 minutes, then add it to a three-necked flask for stirring, heat to 65°C, add 40 parts of aluminum sulfate aqueous solution, and stir for 120 minutes, A certain amount of 10% Na was added dropwise 2 CO 3 Adjust the pH of the aqueous solution to 8.5 and keep stirring for 3 hours;
[0035] 2) Add 30g of melamine formaldehyde resin solution into the flask, stir and disperse at 65°C, stir for 30min, then cool to room temperature, adjust the pH value to 4.5 with acetic acid, slowly heat up to 65°C, and stir for 120min, cool, use 10 %Na 2 CO3 The pH of the aqueous solution is adjusted to 8.5;
[0036] 3) The mixture obtained in 2) was left to stand for 6 hours, then suction-filtered, washed, and dried at 60°C to obtain expandable graphite coated with melamine formaldehyde-aluminum hydroxide.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| compressive strength | aaaaa | aaaaa |
| compressive modulus | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More