KR20200028879A - 초임계 유체에 의한 무몰드 입체 구조 발포 제품의 제조방법 - Google Patents
초임계 유체에 의한 무몰드 입체 구조 발포 제품의 제조방법 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
Description
도 1은 본 발명에서 초임계 유체 이송 시스템 및 입체 발포 시스템의 구조적 흐름도이다.
도 2는 본 발명에서 예열 시스템의 모식도이다.
도 3은 실시예 1에 따른 PLA 발포 제품의 전자 현미경 주사도이다.
도 4는 본 발명의 실시예 2에 따른 POP COHERE 8102 발포 제품의 전자 현미경 주사도이다.
도 5는 본 발명의 실시예 3에 따른 TPU 58315 발포 제품의 전자 현미경 주사도이다.
2: N2 액상 저장 탱크
3: N2 가압 스테이션
4: CO2 액상 저장 탱크
5: CO2 가압 스테이션
6: 가스 유입 밸브
7: 입체 발포 시스템
8: 압력 제어 장치
9: 온도 제어 장치
10: 압력 방출 장치
11: 소음기
12: 가스 배출 밸브
13: 예열 시스템
14: 온도 제어 장치
15: 가열 순환 장치
Claims (8)
- 초임계 유체 이송 시스템, 입체 발포 시스템 및 예열 시스템을 포함하고, 여기에서 초임계 유체 이송 시스템은 초임계 CO2 또는 초임계 N2 이송 시스템이거나, 또는 N2/CO2 혼합 기체이고; 입체 발포 시스템은 입체 발포 탱크, 온도 제어 장치, 압력 제어 장치, 압력 방출 장치를 포함하고, 상기 초임계 유체 이송 시스템은 입체 발포 시스템에 연결되고; 상기 예열 시스템은 예열 탱크, 가열 순환 장치, 온도 제어 장치를 포함하고;
단일 단계 성형법을 채택하며, 고온 중간압의 초임계 유체를 통해 폴리머를 팽윤 함침시켜, 곧바로 입체 발포 탱크에서 자유 무몰드 입체 방압 발포 성형을 진행하며, 구체적인 단계는, 즉, 폴리머 원료를 가압 성형하여 발포 프리폼을 얻은 후, 발포 프리폼을 예열 시스템 내에서 예열하고, 예열 온도까지 승온시킨 후 발포 프리폼을 입체 발포 탱크 내에 넣고, 입체 발포 탱크 밀봉 뚜껑을 닫고, 가스 유입 밸브를 열어 초임계 유체를 붓고, 목표 온도와 압력으로 조절하여 초임계 유체를 폴리머로 30 내지 120분간 팽윤 확산시키고, 압력 방출 장치를 열어 방압 발포를 진행함으로써, 제품 형상, 사이즈 정밀도, 셀의 공극률과 제품 밀도를 제어할 수 있는 폴리머 미세다공성 발포 제품을 얻는 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제1항에 있어서,
상기 폴리머는 폴리에틸렌(polyethylene), 폴리락트산(polylactic acid), 폴리프로필렌(polypropylene), 폴리스티렌(polystyrene), 폴리메틸 메타크릴레이트(PMMA: Poly(methyl methacrylate)), 폴리카보네이트(polycarbonate), 아크릴로니트릴-부타디엔-스티렌 공중합체(acrylonitrile-butadiene-styrene copolymer), 폴리에틸렌 테레프탈레이트(polyethylene terephthalate), 폴리아미드(polyamide), 폴리이미드(polyimide), 폴리페닐렌설파이드(polyphenylene sulfide), 폴리에테르설폰(poly (ether sulfone)), 폴리에테르에테르케톤(Polyether Ether Keton), 고무, 실리콘 고무, 에틸렌 프로필렌 디엔 단량체(EPDM: Ethylene Propylene Diene monomer), 에틸렌 비닐아세테이트 공중합체(ethylene-vinyl acetate copolymer), 열가소성 폴리우레탄(polyurethane), 열가소성 엘라스토머(elastomer)로 이루어진 군에서 임의 선택된 하나 또는 조성물인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제2항에 있어서,
폴리머는 비정질 폴리머에서 선택하고, 상기 목표 온도는 폴리머 융해 온도보다 1.0 내지 50℃ 낮고, 압력은 5 내지 15MPa인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제2항에 있어서,
폴리머는 결정질 폴리머에서 선택하고, 상기 목표 온도는 폴리머 융점 온도보다 1.0 내지 50℃ 낮고, 압력은 5 내지 15MPa인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제3항 또는 제4항에 있어서,
상기 입체 발포 탱크 압력 방출 장치의 방압 속도는 1 내지 1000MPa/s인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제3항 또는 제4항에 있어서,
상기 초임계 CO2 이송 시스템은 CO2 액상 저장 탱크, CO2 가압 스테이션을 포함하고, 상기 초임계 N2 이송 시스템은 N2 액상 저장 탱크, N2 가압 스테이션을 포함하는 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제1항에 있어서,
상기 초임계 CO2 이송 시스템은 N2/CO2 혼합 기체이며, 여기에서 N2의 부피 백분율은 50 내지 99%인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법. - 제3항 또는 제4항에 있어서,
폴리머 미세다공성 발포 제품은 부피 팽창률이 2 내지 60배이고, 평균 홀 직경은 0.1 내지 100μm이고, 및 홀 밀도는 1.0×106-1.0×1015개/cm3인 것을 특징으로 하는 초임계 유체에 의한 폴리머 무몰드 입체 구조 발포 제품의 제조방법.
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CN201811035299.9 | 2018-09-06 | ||
CN201811035299.9A CN109385058B (zh) | 2018-09-06 | 2018-09-06 | 一种超临界流体制备无模立体结构发泡制品的方法 |
PCT/CN2018/111452 WO2020047958A1 (zh) | 2018-09-06 | 2018-10-23 | 一种超临界流体制备无模立体结构发泡制品的方法 |
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KR20200028879A true KR20200028879A (ko) | 2020-03-17 |
KR102376525B1 KR102376525B1 (ko) | 2022-03-18 |
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US (1) | US11286364B2 (ko) |
EP (1) | EP3643739B1 (ko) |
JP (1) | JP7214228B2 (ko) |
KR (1) | KR102376525B1 (ko) |
CN (1) | CN109385058B (ko) |
WO (1) | WO2020047958A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20210125236A (ko) * | 2020-04-08 | 2021-10-18 | 에이치디씨현대이피 주식회사 | 용매를 사용하지 않는 고발포 폴리우레탄 폼 제조방법 및 이 제조방법에 의해 제조된 폴리우레탄 폼 |
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CN109385058A (zh) | 2019-02-26 |
EP3643739A4 (en) | 2020-12-30 |
WO2020047958A1 (zh) | 2020-03-12 |
EP3643739B1 (en) | 2023-01-25 |
US11286364B2 (en) | 2022-03-29 |
CN109385058B (zh) | 2020-08-11 |
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