3D 3D PRINTING HEAT RESISTANT SUPPORT MATERIAL

• Main Authors: GALLUCCI ROBERT RUSSELL, SYBERT PAUL DEAN, LEVASALMI JUHA MATTI, BIHARI MALVIKA
• Format: Patent
• Language: English; Korean
• Published: 29.06.2020
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention relates to filaments used for forming a support structure in the manufacture of fused filaments. The filaments include an amorphous thermoplastic resin including bisphenol isophorone carbonate units and further including bisphenol A carbonate units, wherein the bisphenol isophorone carbonate units are present at 30-50 mol% based on the total content of the bisphenol A carbonate units and the bisphenol isophorone units in the resin, and the resin has a glass transition temperature of 165-220°C. The composition used for forming the filaments shows a preferred combination of filament formability, printability, lack of significant oozing from a printer nozzle and easy mechanical separation from a build material at room temperature after printing. 융합 필라멘트 제조에서 지지 구조체를 형성하는데 사용하기 위한 필라멘트로, 비스페놀 이소포론 카르보네이트 단위 및 비스페놀 A 카르보네이트 단위를 더 포함하는 비정질 열가소성 수지를 포함하고, 상기 비스페놀 이소포론 카르보네이트 단위는 상기 수지 중의 비스페놀 A 카르보네이트 단위 및 비스페놀 이소포론 카르보네이트 단위의 전체의 30 내지 50 몰%이고, 상기 수지는 165℃ 내지 200℃의 유리 전이 온도를 갖는다. 상기 지지 필라멘트를 형성하는 데 사용되는 조성물은 필라멘트 성형성, 인쇄성, 프린터 노즐로부터의 상당한 삼출(oozing)의 결여, 및 인쇄 후 실온에서 빌드(build) 재료로부터의 기계적 분리의 양호한 용이성의 바람직한 조합을 나타낸다.