수도-비정질 중합체로부터의 반결정질 부품의 제조

• Main Authors: LYONS JASON M, BUSSI PHILLIPPE, CLAY BRUCE, DEYRAIL YVES, AUDRY RICHARD, SPAHR TIMOTHY A
• Format: Patent
• Language: Korean
• Published: 24.02.2020
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; 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; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

적어도 하나의 수도-비정질 중합체를 이의 유리 전이 온도 초과의 온도로 가열하여 중합체를 연화시키는 연화 단계, 및 적어도 하나의 수도-비정질 중합체를 이의 유리 전이 온도 내지 용융 온도의 온도로 가열하는 결정화 단계를 포함하고, 수도-비정질 중합체는 연화 단계 또는 결정화 단계 동안 결정화의 적어도 일부가 일어나기 전에 몰드 상에 배치되는, 폴리 아릴 에테르 케톤, 예컨대 PEKK를 포함하는 적어도 하나의 수도-비정질 중합체로부터의 반결정질 물품의 제조 방법. 상기 방법은 전통적인 열성형 공정에 의해 형성된 물품에 비해 증가된 불투명도, 증가된 결정도, 증가된 내열성, 개선된 화학적 저항성, 및 개선된 기계적 특성을 나타내는 물품을 생성한다. A method of manufacturing a semi-crystalline article from at least one pseudo-amorphous polymer including a poly aryl ether ketone, such as PEKK, including a softening step, wherein the at least one pseudo-amorphous polymer is heated to a temperature above its glass transition temperature to soften the polymer, and a crystallization step, wherein the at least one pseudo-amorphous polymer is heated to a temperature between its glass transition temperature and melting temperature, the pseudo-amorphous polymer being placed on a mold during either the softening step or the crystallization step before at least some crystallization takes place. The method results in articles demonstrating increased opacity, increased crystallinity, increased thermal resistance, improved chemical resistance, and improved mechanical properties over articles formed by traditional thermoforming processes.