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Binder composition for powder 3D printing of high-strength biscuit and printing method
The invention relates to a binder composition for powder 3D printing of a high-strength biscuit and a printing method. An aqueous solution containing an initiator and a catalyst is used as a liquid binder sprayed from a spray head of a powder 3D printer; taking a monomer and a cross-linking agent as a solid binder and a to-be-printed powder material; and printing to-be-printed powder premixed with the solid binder by using the liquid binder, and after printing, carrying out in-situ cross-linking curing powder removal and post-treatment. For powder 3D printing, the viscosity of the liquid binder composed of the aqueous solution of the initiator and the catalyst is close to that of pure water, liquid drops can be continuously and stably sprayed, a spray head is not prone to being blocked, long-term storage is facilitated, and a printing head cannot be corroded. After printing, the monomer and the cross-linking agent are subjected to a polymerization reaction under the action of the initiator to form a three-dimensional rigid network skeleton, so that the biscuit obtains high strength and good powder removal capacity, and the mechanism of the binder composition does not depend on powder types, so that the binder composition is suitable for any powder material, and also has the advantages of low cost and high speed.
本发明涉及一种用于粉末3D打印高强度素坯的粘结剂组合物及打印方法，含有引发剂和催化剂的水溶液作为粉末3D打印机从喷头喷出的液体粘结剂；将单体和交联剂作为固体粘结剂与待打印的粉末材料；用液体粘结剂打印预混固体粘结剂的待打印粉末，打印完后，原位交联固化脱粉和后处理工艺。对于粉末3D打印，由引发剂和催化剂的水溶液构成的液体粘结剂粘度接近于纯水，可连续稳定地喷射液滴，不易堵塞喷头，且便于长期存放、不会腐蚀打印头。打印后，单体和交联剂在引发剂作用下会发生聚合反应形成三维刚性网络骨架，使素坯获得高强度和好的脱粉能力，并且该粘结剂组合物的机理不依赖于粉末种类，因此适用于任何粉末材料，还具有成本低，速率快的优点。
Binder composition for powder 3D printing of high-strength biscuit and printing method
The invention relates to a binder composition for powder 3D printing of a high-strength biscuit and a printing method. An aqueous solution containing an initiator and a catalyst is used as a liquid binder sprayed from a spray head of a powder 3D printer; taking a monomer and a cross-linking agent as a solid binder and a to-be-printed powder material; and printing to-be-printed powder premixed with the solid binder by using the liquid binder, and after printing, carrying out in-situ cross-linking curing powder removal and post-treatment. For powder 3D printing, the viscosity of the liquid binder composed of the aqueous solution of the initiator and the catalyst is close to that of pure water, liquid drops can be continuously and stably sprayed, a spray head is not prone to being blocked, long-term storage is facilitated, and a printing head cannot be corroded. After printing, the monomer and the cross-linking agent are subjected to a polymerization reaction under the action of the initiator to form a three-dimensional rigid network skeleton, so that the biscuit obtains high strength and good powder removal capacity, and the mechanism of the binder composition does not depend on powder types, so that the binder composition is suitable for any powder material, and also has the advantages of low cost and high speed.
本发明涉及一种用于粉末3D打印高强度素坯的粘结剂组合物及打印方法，含有引发剂和催化剂的水溶液作为粉末3D打印机从喷头喷出的液体粘结剂；将单体和交联剂作为固体粘结剂与待打印的粉末材料；用液体粘结剂打印预混固体粘结剂的待打印粉末，打印完后，原位交联固化脱粉和后处理工艺。对于粉末3D打印，由引发剂和催化剂的水溶液构成的液体粘结剂粘度接近于纯水，可连续稳定地喷射液滴，不易堵塞喷头，且便于长期存放、不会腐蚀打印头。打印后，单体和交联剂在引发剂作用下会发生聚合反应形成三维刚性网络骨架，使素坯获得高强度和好的脱粉能力，并且该粘结剂组合物的机理不依赖于粉末种类，因此适用于任何粉末材料，还具有成本低，速率快的优点。
Binder composition for powder 3D printing of high-strength biscuit and printing method
一种用于粉末3D打印高强度素坯的粘结剂组合物及打印方法
CHENG LAIFEI (author) / LYU XINYUAN (author) / YE FANG (author) / CUI XUEFENG (author) / XU ZESHUI (author) / ZHANG LITONG (author)
2022-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B22F
Verarbeiten von Metallpulver
,
WORKING METALLIC POWDER
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
Two-step degreasing method for 3D printing ceramic core biscuit
| European Patent Office | 2020