KR102544027B1 - 자가치유성 폴리우레탄 중합체를 포함하는 온도변화 감지형 기재 - Google Patents
자가치유성 폴리우레탄 중합체를 포함하는 온도변화 감지형 기재 Download PDFInfo
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Abstract
본 발명에 따른 온도변화 감지형 기재는 냉장 또는 냉동전용 식품 및 의료용품의 부패 방지를 위한 온도변화 감지센서로 응용이 가능하다. 예를 들면, -60℃, -50℃, -30℃, -20 ℃, -10℃ 등에서 보관할 때 불투명하던 기재가 0℃, 10℃, 20℃, 30℃ 등으로 온도가 올라갈 경우 투명하게 변하게 됨에 따라 광투과도의 변화를 통하여 보관상태를 확인할 수 있는 온도변화 감지센서를 제공할 수 있다.
Description
도 2는 본 발명에 따른 실시예 3의 미세섬유 기반 웹-필름(냉동전용 온도변화 감지센서)를 20 ℃에 노출시켰을 경우 시간에 따른 육안 사진이다.
| 냉동전용 센서 | 웹-필름 두께 (㎛) | 광투과도 (%) | ||
| -20 ℃ | 5 ℃(24시간 노출) | 20 ℃(24시간 노출) | ||
| 실시예 1 | 6.4 | 8.1 | 13.6 | 22.2 |
| 실시예 2 | 9.5 | 1.6 | 7.3 | 16.4 |
| 실시예 3 | 15.5 | 0.5 | 6.1 | 19.0 |
| 실시예 4 | 20.8 | 0.3 | 5.9 | 19.2 |
| 냉장전용 센서 | 웹-필름 두께 (㎛) | 광투과도 (%) | |
| 0 ℃ | 20 ℃(24시간 노출) | ||
| 실시예 5 | 9.3 | 4.2 | 18.0 |
| 실시예 6 | 17.1 | 0.5 | 16.8 |
| 실시예 7 | 25.0 | 0.3 | 18.2 |
| 실시예 8 | 38.6 | 0.2 | 21.5 |
| 냉동전용 센서 | 웹-필름 두께 (㎛) | 광투과도 (%) | ||
| -20 ℃ | 5 ℃(24시간 노출) | 20 ℃(24시간 노출) | ||
| 실시예 9 | 84.3 | 0.1 | 8.7 | 26.3 |
| 냉장전용 센서 | 웹-필름 두께 (㎛) | 광투과도 (%) | |
| 0 ℃ | 20 ℃(24시간 노출) | ||
| 실시예 10 | 103.1 | 0.1 | 27.8 |
Claims (14)
- 자가치유성 폴리우레탄 중합체 매트릭스 및 상기 매트릭스에 분산된 기공을 가지는 온도변화 감지형 기재로서,
온도의 변화에 의해 상기 매트릭스를 형성하는 자가치유성 폴리우레탄 중합체가 확산되어 상기 기공의 크기가 변하면서 광투과도의 변화가 발생하여 온도변화가 감지되고,
상기 온도변화 감지형 기재는 상기 자가치유성 폴리우레탄 중합체가 자가융착되기 시작하는 온셋 포인트 온도를 가지며,
상기 온셋 포인트 온도에서 비가역적으로 자가융착하여 투명성이 증가하는, 온도변화 감지형 기재. - 제 1항에 있어서,
상기 기공은 관통홀 및 요철에서 선택되는 것인 온도변화 감지형 기재. - 제 1항에 있어서,
상기 온도변화 감지형 기재는 온도가 상승함에 따라 상기 기공의 크기가 감소되거나 소멸되면서 광투과도의 변화가 발생하는 것인 온도변화 감지형 기재. - 삭제
- 제 1항에 있어서,
상기 온도변화 감지형 기재는 -20 ℃에서 24시간 유지한 후, 380 내지 780 nm 파장에서 측정된 광투과도를 TT1이라 하고, 20 ℃에서 24시간 유지한 후, 380 내지 780 nm 파장에서 측정된 광투과도를 TT2라 할 때, |TT2 - TT1|≥ 5 %인 온도변화 감지형 기재. - 제 5항에 있어서,
상기 온도변화 감지형 기재는 20 ℃에서 24시간 유지한 후, 380 내지 780 nm 파장에서 측정된 광투과도가 15 % 이상인 온도변화 감지형 기재. - 제 1항에 있어서,
상기 온도변화 감지형 기재는
a) 자가치유성 폴리우레탄 중합체로 이루어진 미세섬유가 망상구조를 형성한 웹-필름이며, 상기 망상구조 사이에 관통홀이 형성되거나, 또는
b) 자가치유성 폴리우레탄 중합체로 이루어진 시트 또는 필름이며, 복수의 관통홀 또는 요철을 가지는 것인 온도변화 감지형 기재. - 제 7항에 있어서,
상기 미세섬유는 평균직경이 0.01 ㎛ 내지 200 ㎛인 온도변화 감지형 기재. - 제 7항에 있어서,
상기 미세섬유는 전기방사, 용액방사 또는 용융방사하여 제조된 것인 온도변화 감지형 기재. - 제 7항에 있어서,
상기 관통홀의 크기는 0.01 ㎛ 내지 200 ㎛인 것인 온도변화 감지형 기재. - 제 1항에 있어서,
상기 자가치유성 폴리우레탄 중합체는 디설파이드 구조를 포함하는 것인 온도변화 감지형 기재. - 제 1항에 있어서,
상기 온도변화 감지형 기재의 두께는 1 ㎛ 내지 500 ㎛ 인 온도변화 감지형 기재. - 제 1항 내지 제 3항 및 제 5항 내지 제 12항에서 선택되는 어느 한 항의 온도변화 감지형 기재로 이루어진 온도센서.
- 제 13항의 온도센서를 포함하는 포장재.
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| US17/773,424 US20220373406A1 (en) | 2019-11-11 | 2020-11-11 | Temperature-change sensing substrate comprising self-healing polyurethane polymer |
| JP2022525425A JP2023500288A (ja) | 2019-11-11 | 2020-11-11 | 自己治癒性ポリウレタン重合体を含む温度変化感知型基材 |
| CN202080077948.0A CN114651168A (zh) | 2019-11-11 | 2020-11-11 | 包含自修复性聚氨酯聚合物的温度变化感知型基材 |
| EP20888438.7A EP4060301A1 (en) | 2019-11-11 | 2020-11-11 | Temperature-change sensing substrate comprising self-healing polyurethane polymer |
| PCT/KR2020/015772 WO2021096215A1 (ko) | 2019-11-11 | 2020-11-11 | 자가치유성 폴리우레탄 중합체를 포함하는 온도변화 감지형 기재 |
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| KR102646284B1 (ko) * | 2021-02-23 | 2024-03-13 | 한국화학연구원 | 자가치유성 다공성 기재 및 그의 제조방법 |
| KR102731390B1 (ko) * | 2021-11-24 | 2024-11-19 | 한국화학연구원 | 자가치유시간이 조절되는 자가치유성 폴리우레탄, 이로부터 제조된 자가치유성 웹-필름 및 이를 포함하는 온도감응형 소재 |
| WO2024035084A1 (ko) * | 2022-08-09 | 2024-02-15 | 코오롱인더스트리 주식회사 | 자가치유층을 포함하는 태양광용 백시트 및 이의 제조 방법 |
| KR102816513B1 (ko) * | 2022-11-29 | 2025-06-05 | 한국생산기술연구원 | 표면처리된 셀룰로오스 나노크리스탈 및 표면처리된 셀룰로오스 나노크리스탈과 결합된 변성 폴리우레탄 |
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