KR102394780B1 - 흡음성능이 우수한 흡음재용 폴리우레탄 폼 조성물 및 그 제조방법 - Google Patents
흡음성능이 우수한 흡음재용 폴리우레탄 폼 조성물 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명에 따른 실시예 1 및 비교예 1-3에서 제조된 폴리우레탄 발포 폼의 발포셀 SEM 사진이다.
도 3은 본 발명의 사슬연장제 사용량에 따른 실시예 1 및 비교예 1-3에서 제조된 폴리우레탄 발포 폼의 흡음계수를 관내법을 이용하여 측정한 결과를 나타낸 그래프이다.
구분(단위: g) | 제조예 1 | 제조예 2 | 제조예 3 | |
폴리에테르 폴리올 | KE-810 | 300 | 300 | 300 |
가교제 | EA | 0.6 | - | - |
DEOA | - | 0.6 | - | |
TEOA | - | - | 0.6 | |
사슬연장제 | PEG(Mw 400) | 10 | 10 | 10 |
발포제 | DI-water | 12 | 12 | 12 |
아민계 촉매 | Dabco 33LV | 2.16 | 2.16 | 2.16 |
발포 촉매 | Dabco BL11 | 0.24 | 0.24 | 0.24 |
계면활성제 | L-3002 | 3.96 | 3.96 | 3.96 |
이소시아네이트 | KW-5029/1C-B | 199.65 | 204.08 | 197.38 |
구분(단위: g) | 비교예 1 | 비교예 2 | 실시예 1 | 비교예 3 | |
폴리에테르 폴리올 | KE-810 | 300 | 300 | 300 | 300 |
가교제 | DEOA | 0.6 | 0.6 | 0.6 | 0.6 |
사슬연장제 | PEG(Mw 400) | 0 | 10 | 20 | 30 |
발포제 | DI-water | 12 | 12 | 12 | 12 |
아민계 촉매 | Dabco 33LV | 2.16 | 2.16 | 2.16 | 2.16 |
발포 촉매 | Dabco BL11 | 0.24 | 0.24 | 0.24 | 0.24 |
계면활성제 | L-3002 | 3.96 | 3.96 | 3.96 | 3.96 |
이소시아네이트 | KW-5029/1C-B | 189.99 | 192.05 | 204.08 | 216.06 |
Claims (9)
- 수산가(OH-value)가 26 ~ 30 mgKOH/g이고, 평균 관능기수가 3인 폴리에테르(polyether) 폴리올 100 중량부, 가교제 0.1 ~ 0.7 중량부, 사슬연장제 6.67 중량부, 발포제 2.3 ~ 4.3 중량부, 아민계 촉매 0.3 ~ 1 중량부, 발포 촉매 0.03 ~ 0.1 중량부 및 계면활성제 0.7 ~ 1.7 중량부를 포함하여 1600~1800 rpm으로 10~30분 동안 혼합하여 혼합물을 제조하는 단계; 및
상기 혼합물에 NCO기 함량이 34~36중량%이고, NCO 인덱스가 0.7~1.1인 이소시아네이트(isocyanate) 50 ~ 73 중량부를 투입하여 6000~8000 rpm으로 혼합하고 발포시키는 단계;
를 포함하는 흡음성능이 우수한 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 가교제는 에탄올아민(ethanolamine), 디에탄올아민(diethanolamine), 트리에탄올아민(triethanolamine), 1, 4-부탄디올(1,4-butanediol) 및 프로필렌 글리콜(propylene glycol)로 이루어진 군에서 선택된 1종 이상인 것을 특징으로 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 사슬연장제는 중량평균분자량이 400인 폴리에틸렌글리콜(polyethylene glycol)인 것을 특징으로 하는 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 발포제는 증류수인 것을 특징으로 하는 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 아민계 촉매는 트리에틸렌디아민을 포함하고, 상기 발포 촉매는 디프로필렌 글리콜 및 비스(2-디메틸아미노에틸)에테르의 혼합물을 포함하는 것을 특징으로 하는 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 계면활성제는 실리콘 계면활성제인 것을 특징으로 하는 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항에 있어서,
상기 이소시아네이트는 메틸렌 디페닐 디이소시아네이트(methylene diphenyl diisocyanate, MDI)를 포함하는 흡음재용 폴리우레탄 폼 조성물의 제조방법.
- 제1항 내지 제7항 중에서 선택된 어느 한 항의 방법으로 제조된 폴리우레탄 폼으로, 1500~2500 Hz의 흡음율이 0.7 이상인 흡음재용 폴리우레탄 폼.
- 수산가(OH-value)가 26 ~ 30 mgKOH/g이고, 평균 관능기수가 3인 폴리에테르(polyether) 폴리올 100 중량부;
가교제 0.1 ~ 0.7 중량부;
사슬연장제 6.67 중량부;
발포제 2.3 ~ 4.3 중량부;
아민계 촉매 0.3 ~ 1 중량부;
발포 촉매 0.03 ~ 0.1 중량부;
계면활성제 0.7 ~ 1.7 중량부; 및
NCO기 함량이 34~36중량%이고, NCO 인덱스가 0.7~1.1인 이소시아네이트(isocyanate) 50 ~ 73 중량부;
를 포함하는 흡음성능이 우수한 흡음재용 폴리우레탄 폼 조성물.
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KR20210037936A (ko) * | 2019-09-30 | 2021-04-07 | 현대자동차주식회사 | 외관 성형성, 냄새저감 및 흡음성능이 향상된 흡음재용 저밀도 폴리우레탄 폼 조성물, 폴리우레탄 폼 제조방법 및 이를 통해 제조된 폴리우레탄 폼 |
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KR20240146528A (ko) * | 2023-03-28 | 2024-10-08 | 넥센타이어 주식회사 | 저소음 타이어, 이의 제조를 위한 타이어 내부 폴리우레탄폼 흡음라이닝 조성물 및 이를 이용한 타이어 내부 폴리우레탄폼 흡음라이닝 방법 |
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