PARKAR, Zeba,SKAMSER, Daniel J.,ABUELYAMAN, Ahmed S.,WU, Tianyu
申请号：
USUS2018/042595
公开号：
WO2019/023009A1
申请日:
2018.07.18
申请国别(地区):
US
年份:
2019
代理人:
摘要：
The present disclosure provides a photopolymerizable composition comprising 50-90 wt% of at least one urethane component, 5-50 wt% of at least one reactive diluent, 0.1 -5 wt% of a photoinitiator, and optionally an inhibitor, wherein said composition has a viscosity at a temperature of 40 degrees Celsius of 10 Pa.s or less, as determined using a magnetic bearing rheometer using a 40 mm cone and plate measuring system at a shear rate of 0.1 1 /s. The present disclosure also provides an article including the reaction product of the photopolymerizable composition, in which the article exhibits an elongation at break of 25% or greater. Further, the present disclosure provides a method of making an article including (i) providing a photopolymerizable composition and (ii) selectively curing the photopolymerizable composition to form an article. The method optionally also includes (iii) curing unpolymerized urethane component and/or reactive diluent remaining after step (ii). Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article； and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article； and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.La présente invention concerne une composition photopolymérisable comprenant de 50 à 90 % en poids d'au moins un composant uréthane, de 5 à 50 % en poids d'au moins un diluant réactif, de 0,1 à 5 % en poids d'un photo-initiateur, et éventuellement un inhibiteur, ladite composition ayant une viscosité à une température de 40 degrés Celsius de 10 Pa s ou moins, tel que déterminé à l'aide d'un rhéomètre à palier magnétique utilisant un cône de 40 mm et un système de mesure de plaque à une vitess
