A kind of superhydrophobic polyimide foam and preparation method thereof
A water polyimide and foam technology, applied in the field of super-hydrophobic polyimide foam and its preparation, can solve the problems of affecting the use effect, low water absorption, etc., achieves good flame retardancy, excellent hydrophobicity, and is beneficial The effect of industrial production and promotion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] (1) According to the number of parts by mass, dissolve 100 parts of pyromellitic dianhydride in 80 parts of polar solvent N, N-dimethylformamide in the reactor, then add 10 parts of ethylene glycol, and heat to 110 ℃ for 1.5 hours, then cooled to room temperature, and then sequentially added 5 parts of hydrogen-containing silicone oil with a hydrogen content of 0.2%, 10 parts of triethylenediamine catalyst, and 5 parts of SiC type polyether modified silicone oil in proportion, and stirred evenly to obtain Foam precursor.
[0018] (2) Stir and mix the prepared foam precursor and 160 parts of polyphenyl polymethyl polyisocyanate with a paddle mixer, pour into a mold for foam molding to obtain a foam intermediate.
[0019] (3) Put the foam intermediate in a microwave oven and heat it for 1 hour to further solidify it. Then the foam was placed in an infrared oven and heated to 250°C, and the finished product was obtained after 2 hours.
[0020] The prepared foam density i...
Embodiment 2
[0022] (1) According to the number of parts by mass, dissolve 100 parts of pyromellitic dianhydride in 80 parts of polar solvent N, N-dimethylformamide in the reactor, then add 10 parts of ethylene glycol, and heat to 110 ℃ for 1.5 hours, then cooled to room temperature, and then sequentially added 30 parts of hydrogen-containing silicone oil with a hydrogen content of 0.2%, 10 parts of triethylenediamine catalyst, and 5 parts of SiC type polyether modified silicone oil in proportion, and stirred evenly to obtain Foam precursor.
[0023] (2) Stir and mix the prepared foam precursor and 160 parts of polyphenyl polymethyl polyisocyanate with a paddle mixer, pour into a mold for foam molding to obtain a foam intermediate.
[0024] (3) Put the foam intermediate in a microwave oven and heat it for 1 hour to further solidify it. Then the foam was placed in an infrared oven and heated to 250°C, and the finished product was obtained after 2 hours.
[0025] The prepared foam density ...
Embodiment 3
[0027] (1) Dissolve 80 parts of 3,3',4,4'-benzophenone tetraacid dianhydride in 20 parts of polar solvent N-methyl-2-pyrrolidone in a reaction kettle by mass parts, Then add 5 parts of ethylene glycol, heat to 110 ° C for 1.5 hours, then cool to room temperature, and then add 40 parts of hydrogen-containing silicone oil with a hydrogen content of 0.8%, 5 parts of triethylenediamine catalyst, and 5 parts of SiC type polyether-modified silicone oil, and stir evenly to obtain a foam precursor.
[0028] (2) Stir and mix the prepared foam precursor and 150 parts of polyphenyl polymethyl polyisocyanate with a paddle mixer, pour into a mold for foam molding to obtain a foam intermediate.
[0029] (3) Put the foam intermediate in a microwave oven and heat it for 1 hour to further solidify it. Then the foam was placed in an infrared oven and heated to 250°C, and the finished product was obtained after 2 hours. The resulting foam density is 15kg / m 3 , with superhydrophobicity, the wa...
PUM
| Property | Measurement | Unit |
|---|---|---|
| density | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More