A kind of polymer hollow microsphere and its preparation method and application
A polymer and microsphere technology, applied in the direction of microsphere preparation, microcapsule preparation, coating, etc., to achieve the effect of simple operation process, easy expansion of production, good heat preservation and heat insulation reflection
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] Mix 60g styrene (St), 20g acrylic acid (AA) and 20g butyl acrylate (BA) with 1g potassium persulfate in 400ml deionized water; react at 75°C for 3 hours to prepare PS-AA seed emulsion (such as figure 1 Shown); then, keep the seed emulsion reaction temperature constant, 20g styrene, 20g butyl acrylate, 60g thiophenol methacrylate (SAM) and 1g potassium persulfate are mixed in 400ml deionized water, then pass The dropping funnel was continuously and evenly added dropwise in the above-mentioned seed emulsion, and continued to react for 3 hours to obtain PS / PSAM core-shell structure microspheres (such as figure 2 shown); then, at 90°C, use 10% KOH solution to adjust the pH value of the system to 12, and treat for 2 hours to remove the inner core of the core-shell microspheres prepared above; then use 10% dilute hydrochloric acid solution, Adjust the pH value of the system to 2.0, handle 2 hours, form a solid shell structure, and finally neutralize the pH value of the syste...
Embodiment 2
[0044] Mix 50g of styrene, 25g of methacrylic acid and 25g of ethyl acrylate with 1g of ammonium persulfate in 400ml of deionized water; react at 65°C for 3 hours to prepare the seed emulsion; Styrene, 20g ethyl acrylate, 50g thiophenol methacrylate ( Figure 4 ) and 1 g of ammonium persulfate in 400 ml of deionized water were uniformly mixed, and then continuously and evenly added dropwise to the above-mentioned seed emulsion through a dropping funnel, and the reaction was continued for 4 hours to obtain microspheres with a core-shell structure; then, at 100° C., using 10 % NaOH solution to adjust the pH value of the system to 13, and treat for 3 hours to remove the inner core of the core-shell structure microspheres prepared above; then use 10% dilute hydrochloric acid solution to adjust the pH value of the system to 2.5, and treat for 3 hours to form a solid shell structure, and finally adjust the pH value of the system to 7.5 with 10% NaOH solution, and neutralize to obtai...
Embodiment 3
[0047] Mix 30g of styrene, 30g of acrylic acid and 40g of ethyl acrylate with 1.5g of potassium persulfate in 400ml of deionized water; react at 80°C for 3 hours to prepare the seed emulsion; Ethylene, 20g ethyl acrylate, 50g, 4,4'-dimercaptodiphenyl sulfide dimethacrylate ( Figure 5 ) and 1g of potassium persulfate in 200ml of deionized water were uniformly mixed, and then continuously and evenly added dropwise to the above-mentioned seed emulsion through a dropping funnel, and the reaction was continued for 3 hours to obtain microspheres with a core-shell structure; then, at 95°C, using 10 Adjust the pH value of the system to 12.5 with % KOH solution, and treat for 5 hours to remove the inner core of the core-shell structure microspheres prepared above; then use 10% sulfuric acid solution to adjust the pH value of the system to 2.0, and treat for 5 hours to form a solid shell structure, and finally adjust the pH value of the system to 7.0 with 10% KOH solution, and neutrali...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More