Polymer particle, manufacturing method thereof, and separator for battery comprising the same
View Patent ↗The present application relates to a polymer particle manufacturing method, and according to an example of the manufacturing method and a manufacturing apparatus therefor, a reduction in energy can be achieved by simplifying a manufacturing process thereof.
1. A polymer particle manufacturing method, comprising:
manufacturing a first polymer solution including a polymer dissolved in a first solvent;
heating a manufactured first polymer solution to (T m +5) ° C. or above, wherein T m is a melting point (° C.) of the polymer; and
mixing a second solvent with a heated first polymer solution,
wherein the temperature of the second solvent to be mixed with the first polymer solution is adjusted to at or below a crystallization temperature of the polymer, and wherein the crystallization temperature of the polymer is lower than the T m , and
wherein a mixture solution of the first polymer solution and the second solvent is a non-emulsion.
2. The polymer particle manufacturing method of claim 1 , wherein the first solvent is a good solvent with respect to the polymer.
3. The polymer particle manufacturing method of claim 1 , wherein the first solvent has a Hansen relative energy difference of 0.6 or more and less than 2, with respect to the polymer at room temperature.
4. The polymer particle manufacturing method of claim 1 , wherein the first solvent is a monovalent alcohol having 6 or more carbons.
5. The polymer particle manufacturing method of claim 1 , wherein the second solvent has a Hansen relative energy difference of more than 2 and less than 5 with respect to the polymer at room temperature.
6. The polymer particle manufacturing method of claim 1 , wherein the second solvent is a monovalent alcohol having 5 or less carbons, or ketone.
7. The polymer particle manufacturing method of claim 1 , wherein the first solvent is a monovalent alcohol and the second solvent is a monovalent alcohol or ketone.
8. The polymer particle manufacturing method of claim 1 , wherein the polymer is a polyolefin.
9. The polymer particle manufacturing method of claim 1 , wherein the temperature of the second solvent to be mixed with the first polymer solution is adjusted to a range of (T b -70) ° C. to T b ° C., wherein T b is a boiling point (° C.) of the second solvent.
10. The polymer particle manufacturing method of claim 1 , further comprising adjusting a temperature of the mixture solution of the first polymer solution and the second solvent to a range of (T b -35) ° C. to T b ° C., wherein T b is a boiling point (° C.) of the second solvent.
11. The polymer particle manufacturing method of claim 1 , further comprising cooling the mixture solution of the first polymer solution and the second solvent.