US 12,139,611 B2
High molecular polymer powder material and preparation method thereof
Xiaoshu Xu, Changsha (CN); Jiebin Wen, Changsha (CN); Guang Bao, Changsha (CN); Siqi Zeng, Changsha (CN); Wenya Xu, Changsha (CN); Jian Li, Changsha (CN); Shuai Hou, Changsha (CN); Yiling Zeng, Changsha (CN); and Zhiyong Yin, Changsha (CN)
Assigned to FARSOON TECHNOLOGIES CO., LTD., Changsha (CN)
Appl. No. 17/292,244
Filed by FARSOON TECHNOLOGIES CO., LTD., Changsha (CN)
PCT Filed Oct. 18, 2019, PCT No. PCT/CN2019/111972
§ 371(c)(1), (2) Date May 7, 2021,
PCT Pub. No. WO2020/093855, PCT Pub. Date May 14, 2020.
Claims priority of application No. 201811331785.5 (CN), filed on Nov. 9, 2018; application No. 201811331794.4 (CN), filed on Nov. 9, 2018; and application No. 201811332850.6 (CN), filed on Nov. 9, 2018.
Prior Publication US 2021/0403714 A1, Dec. 30, 2021
Int. Cl. C08L 79/08 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08L 77/02 (2006.01); C08L 77/06 (2006.01)
CPC C08L 79/08 (2013.01) [C08K 3/042 (2017.05); C08K 3/22 (2013.01); C08L 77/02 (2013.01); C08L 77/06 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C08K 2003/2272 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of preparing a macromolecule polymer powder material, comprising:
adding 20 parts of macromolecule powder material and 0.1˜10 parts of carbon black into a stirring tank for a first high-speed stirring to obtain a macromolecule carbon black mixed powder material, wherein the macromolecule powder material is chosen from thermoplastic polyurethane powder material, ethylene-vinyl acetate copolymer powder material, polyethersulfone powder material, polyphenylene sulfide powder material, or polyether ether ketone powder material, and wherein the first high-speed stirring comprises:
a temperature of the stirring tank is maintained at 30˜40° C.;
a stirring rate of the stirring tank is 1500˜2000 r/min; and
a stirring time of the stirring tank is 0.5˜5 min; and
adding the macromolecule carbon black mixed powder material, 0.1˜1 part of flow aid, and 80 parts of the macromolecule powder material into a powder mixing tank for a second high-speed stirring, and then sieving, to obtain the macromolecule polymer powder material having an average particle size of 40˜75 μm, wherein the flow aid is chosen from fumed silica, fumed alumina, or nano titanium dioxide, wherein the second high-speed stirring comprises a first stage and a second stage, wherein the first stage comprises:
a temperature of the powder mixing tank is maintained at 70˜80° C.;
a stirring rate of the powder mixing tank is 1200˜1500 r/min; and
a stirring time of the powder mixing tank is 1˜20 min; and
wherein the second stage comprises:
the temperature of the powder mixing tank is maintained at 30˜40° C.;
the stirring rate of the powder mixing tank is 600˜800 r/min; and
the stirring time of the powder mixing tank is 3˜150 min.