Self-lubricating PI microcapsule and preparation method thereof
A microcapsule and self-lubricating technology, which is applied in the field of lubricating materials, can solve problems such as the inability to prepare self-lubricating composite materials, achieve the effects of simple post-processing procedures, simple processes, and reduced production costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0029] A preparation method of self-lubricating PI microcapsules, comprising the following steps:
[0030] S1, preparing the water phase: mixing the surfactant with water to obtain the water phase;
[0031] S2. Preparation of organic phase: adding polyimide resin and liquid lubricating material to a volatile organic solvent and mixing to obtain an organic phase, wherein the mass ratio of liquid lubricating material to water phase is 1:3-1:8;
[0032] S3. Prepare the oil-in-water emulsion: mix the water phase and the organic phase, and stir to obtain the oil-in-water emulsion, and the stirring speed is 500rpm;
[0033] S4. Preparation of self-lubricating PI microcapsules: mixing and heating the oil-in-water emulsion in the presence of a stabilizer, filtering, washing, drying or freeze-drying to obtain self-lubricating PI microcapsules.
[0034] Raw materials used in each embodiment of the present invention: Sodium dodecyl sulfonate, Wuhan Jiangbei Chemical Reagent Factory; Fat...
Embodiment 1
[0038] A preparation method of self-lubricating PI microcapsules, comprising the following steps:
[0039] 2 g of polyimide resin and 10 g of liquid paraffin were placed in a beaker, and 40 mL of acetone was poured into it to dissolve to obtain an organic phase.
[0040] Take 2g of sodium dodecylsulfonate, add it into 100mL of water, and dissolve it completely to obtain an aqueous phase.
[0041] The organic phase was transferred to a four-necked flask, and the aqueous phase was added under the condition of mechanical stirring at 500 rpm, and heated for 4 hours, during which a stabilizer was used to maintain the weak alkaline environment of the mixed emulsion. The reacted solution was filtered, and the obtained solid sample was washed, and then dried to obtain self-lubricating PI microcapsules.
Embodiment 2
[0043] 2 g of polyimide resin and 6 g of liquid paraffin were placed in a beaker, and 40 mL of acetone was poured into it to dissolve to obtain an organic phase.
[0044] Take 10g of sodium dodecylsulfonate, add it into 100mL of water, and dissolve it completely to obtain an aqueous phase.
[0045] The organic phase was transferred to a four-necked flask, and the aqueous phase was added under the condition of mechanical stirring at 500 rpm, and heated for 4 hours, during which a stabilizer was used to maintain the weak alkaline environment of the mixed emulsion. The reacted solution was filtered, and the obtained solid sample was washed, and then dried to obtain self-lubricating PI microcapsules.
[0046] In summary, the particle size of the self-lubricating PI microcapsules is 5-25 μm scanned by the laser particle size analyzer; according to the TGA test, the initial decomposition temperature of the microcapsules is 330.5 ° C, and the coating rate of the microcapsules is 92.1...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| decomposition temperature | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More