US 12,485,615 B2
Preparation method for polymer composite particle material, and three-dimensional printing method by using polymer composite particle material
Yu-Deh Chao, Taipei (TW); Jeng-Ywan Jeng, Taipei (TW); Dong-Quan Yeh, Taipei (TW); and Pin-Cheng Wang, Taipei (TW)
Assigned to National Taiwan University of Science and Technology, Taipei (TW)
Filed by National Taiwan University of Science and Technology, Taipei (TW)
Filed on May 29, 2023, as Appl. No. 18/325,017.
Claims priority of application No. 112106195 (TW), filed on Feb. 21, 2023.
Prior Publication US 2024/0293968 A1, Sep. 5, 2024
Int. Cl. B29C 64/314 (2017.01); B29C 64/153 (2017.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 70/00 (2020.01); B29K 75/00 (2006.01); B29K 77/00 (2006.01); B29K 105/00 (2006.01)
CPC B29C 64/314 (2017.08) [B29C 64/153 (2017.08); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 70/00 (2014.12); B29K 2075/00 (2013.01); B29K 2077/10 (2013.01); B29K 2105/0032 (2013.01); B29K 2105/251 (2013.01)] 8 Claims
 
1. A preparation method for a polymer composite particle material, wherein the polymer composite particle material can be used as a material in three-dimensional printing for improving mechanical property of a three-dimensional printed finished product; the preparation method comprises the following steps:
a first heating step: putting a polymer powder and a carbon powder into a mixing mill, and performing mixing for a first time under a condition that a cavity temperature of the mixing mill is a first temperature;
a second heating step: raising the cavity temperature of the mixing mill from the first temperature to a second temperature at a speed of 1-10° C./min, and maintaining the second temperature for a second time; and
a third heating step: raising the cavity temperature of the mixing mill from the second temperature to a third temperature at a speed of 0.1-5° C./min, and maintaining the third temperature for a third time to obtain the polymer composite particle material for three-dimensional printing, wherein
when the first temperature, the second temperature, and the third temperature are set to be T1, T2, and Ta3 respectively, and a melting point of the polymer powder is set to be Tm, T1, T2, T3, and Tm satisfy the following relational expressions:

OG Complex Work Unit Math
when the first time, the second time, and the third time are set to be X1, X2, and X3 respectively, X1, X2, and X3 satisfy the following relational expressions:

OG Complex Work Unit Math