公开(公告)号：US20170253702A1

公开(公告)日：2017-09-07

申请号：US15507662

申请日：2015-04-24

Applicant: INSTITUTE OF CHEMISTRY, CHINESE ACADEMY OF SCIENCES

Inventor： Yongmei MA ,  Kun ZHENG ,  Jingnan ZHANG ,  Xinyu CAO ,  Fusong WANG ,  Xuechun LIN ,  Wenhua SUN ,  Jian XU ,  Jinyong DONG ,  Chuncheng LI ,  Wenxin FU

IPC: C08J3/12 ,  B33Y10/00 ,  B33Y70/00 ,  C08K3/34 ,  C08J3/20 ,  C08K3/04 ,  C08K3/08 ,  B29C67/00 ,  B33Y80/00

CPC classification number: C08J3/12 ,  B29C64/153 ,  B29C64/20 ,  B29C67/00 ,  B29K2105/0002 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08G69/14 ,  C08G69/26 ,  C08G69/46 ,  C08J3/203 ,  C08J3/215 ,  C08J2377/02 ,  C08J2377/06 ,  C08K3/013 ,  C08K3/04 ,  C08K3/08 ,  C08K3/34 ,  C08K3/36 ,  C08K5/005 ,  C08K2201/005 ,  C08K2201/01 ,  C08L77/02 ,  C08L77/06 ,  C08L77/00

Abstract: This invention relates to a high molecular weight nylon powder composition for 3D printing, its preparation method and use. The composition comprises: 100 parts by weight of high-viscosity nylon powder, 1-5 parts by weight of a flow agent, and 0.1-1 parts by weight of an antioxidant; the high-viscosity nylon powder is one or more selected from nylon 6, nylon 66, nylon 11, nylon 12, nylon 612 and nylon 610; or the powder composition is obtained via polymerization reaction of the raw materials comprising the following components, based on the weight parts of lactam monomers or amide monomers: 100 parts by weight of lactam monomers or amide monomers, 0.005-1 parts by weight of a catalyst, and 0.1-1 parts by weight of an antioxidant. The high molecular weight nylon powder composition prepared in the present invention has a particle diameter in the range of 20-100 micrometers, good powder spreading performance, and is suitable for the 3D printing process, and the product of the high molecular weight nylon powder composition has good mechanical properties, good dimensional stability and low manufacturing cost.