THERMOPLASTIC RESIN COMPOSITION, PRODUCTION METHOD THEREFOR, AND MOLDED ARTICLE COMPRISING SAME

• Main Authors: KIM, Tae Hoon, AN, Yong Hee, SUNG, Daeun, PARK, Chun Ho, JOE, Wangrae, JANG, Jeongmin
• Format: Patent
• Language: English; French; Korean
• Published: 27.01.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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 disclosure relates to a thermoplastic resin composition, a production method therefor, and a molded article comprising same and, more particularly, to a thermoplastic resin composition, a production method therefor, and a molded article comprising same, wherein the thermoplastic resin composition comprises: A-1) 0.5-45% by weight of a graft copolymer including an acrylate rubber having an average particle diameter of 50-150 nm, an aromatic vinyl compound, and a vinyl cyanide compound; A-2) 20-80% by weight of a graft copolymer including an acrylate rubber having an average particle diameter of 151-600 nm, an aromatic vinyl compound, and a vinyl cyanide compound; and B) 100 parts by weight of a base resin including 10-45% by weight of an α-methylstyrene-based copolymer having a weight average molecular weight of 60,000-180,000 g/mol; and C) 0.5-10 parts by weight of an ultra-high molecular weight copolymer having a weight average molecular weight of 1,000,000-12,000,000 g/mol. According to the present invention, the present invention has excellent mechanical properties such as impact strength, tensile strength, flexural strength, and hardness, as well as having excellent heat resistance and processability, and thus there is an effect of replacing a PVC resin by using existing extruder equipment. La présente invention concerne une composition de résine thermoplastique, un procédé de production associé et un article moulé la comprenant et, de manière plus spécifique, une composition de résine thermoplastique et un article moulé la comprenant, la composition de résine thermoplastique comprenant : A-1) 0,5 à 45 % en poids d'un copolymère greffé comprenant un caoutchouc acrylate ayant un diamètre moyen de particule de 50 à 150 nm, un composé vinylique aromatique et un composé cyanure de vinyle ; A-2) 20 à 80 % en poids d'un copolymère greffé comprenant un caoutchouc acrylate ayant un diamètre moyen de particule de 151 à 600 nm, un composé vinylique aromatique et un composé cyanure de vinyle ; et B) 100 parties en poids d'une résine de base comprenant de 10 à 45 % en poids d'un copolymère à base d'α-méthylstyrène ayant un poids moléculaire moyen en poids de 60 000 à 80 000 g/mol ; et C) 0,5 à 10 parties en poids d'un copolymère à poids moléculaire ultra élevé ayant un poids moléculaire moyen en poids de 1 000 000 à 12 000 000 g/mol. Selon la présente invention, la présente invention présente d'excellentes propriétés mécaniques telles que la résistance aux chocs, la résistance à la traction, la résistance à la flexion et la dureté, ainsi qu'une excellente résistance à la chaleur et une excellente aptitude au traitement, et il y a donc un effet de remplacement d'une résine PVC à l'aide d'un équipement d'extrusion existant. 본 기재는 열가소성 수지 조성물, 이의 제조방법 및 이를 포함하는 성형품에 관한 것으로, 보다 상세하게는 A-1) 평균입경이 50 내지 150nm인 아크릴레이트 고무, 방향족 비닐 화합물 및 비닐시안 화합물을 포함하여 이루어진 그라프트 공중합체 0.5 내지 45 중량%, A-2) 평균입경이 151 내지 600nm인 아크릴레이트 고무, 방향족 비닐 화합물 및 비닐시안 화합물을 포함하여 이루어진 그라프트 공중합체 20 내지 80 중량% 및 B) 중량평균 분자량 60,000 내지 180,000 g/mol인 α-메틸스티렌계 공중합체 10 내지 45 중량%를 포함하는 베이스 수지 100 중량부; 및 C) 중량평균 분자량 1,000,000 내지 12,000,000 g/mol인 초고분자량 공중합체 0.5 내지 10 중량부;를 포함하는 것을 특징으로 하는 열가소성 수지 조성물, 이의 제조방법 및 이를 포함하는 성형품에 관한 것이다. 본 발명에 따르면, 충격강도, 인장강도, 굴곡강도, 경도 등의 기계적 물성이 우수하면서 내열성 및 가공성이 뛰어나 기존의 압출기 설비를 이용하여 PVC 수지를 대체할 수 있는 효과가 있다.