Article
  • Properties of Rigid Polyurethane Foams Synthesized from 4,4'-Diphenylmethane Diisocyanate and Polyether Polyol
  • Seo WJ, Jung HC, Kim YH, Kim WN, Choe KH, Lee YB, Choi SH
  • 4,4'-Diphenylmethane Diisocyanate 와 Polyether Polyol 로부터 제조된 경질 폴리우레탄 폼의 물성
  • 서원진, 정현철, 김연희, 김우년, 최건형, 이영범, 최성희
Abstract
Rigid polyurethane foams (PUFs) were prepared from polymeric 4,4'-diphenylmethane diisocyanate (PMDI), polyether polyol, 1,4-butane diol, silicone surfactant, and distilled water. The density of the PUF was decreased from 173.7 to 41.7 kg/m(3) with an increase in distilled water from 0.5 to 3.0 php (parts per hundred polyol by weight), respectively, at the 0 php butane diol. The cell size of the PUF increased from 115 to 258 μm with an increase in the amount of distilled water from 0.5 to 3.0 php, respectively, at the 10 php butane diol. It was found that the compressive strength of the PUF increased with the content of distilled water, at the same density. Out of the study for the surfactant effect on the properties of the PUF, it was observed that the cell size of the PUF decreased from 360 to 146 μm with an increase in the amount of the surfactant from 0 to 0.33 php, respectively, but the cell size did not change significantly when the amount of the surfactant exceeded 0.33 php.

Polymeric 4,4'-diphenylmethane diisocyanate (PMDI), polyether polyol, 1,4-butane diol, silicone surfactant와 발포제로 물을 사용하여 경질 폴리우레탄 폼 (PUF)을 제조하였다. PUF의 밀도는 0 php (parts per hundred polyol by weight)의 부탄다이올 양에 대하여 물의 양이 0.5∼3.0 php로 증가함에 따라 173.7∼41.7 kg/m(3)로 감소하였다. PUF의 셀 크기는 10 php의 부탄다이올 양에 대하여 물의 양이 0.5∼3.0 php로 증가함에 따라 115∼258 μm로 증가하였다. PUF의 압축강도 측정 결과, 동일 밀도의 PUF에 대하여 압축강도는 물의 양이 증가함에 따라 증가하였다. 계면활성제가 PUF의 물성에 미치는 영향에 관한 연구에서, PUF의 셀 크기가 계면활성제 첨가량이 0∼0.33 php로 증가함에 따라 360∼146 μm로 감소하였으나 0.33 php 이상의 계면활성제 첨가량에 대해서는 더 이상의 셀 크기 변화가 관찰되지 않았다.

Keywords: rigid polyurethane foam; glass transition temperature; morphology

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2002; 26(2): 185-192

    Published online Mar 25, 2002

  • 10.7317/pk.
  • Received on Sep 14, 2001
  • Revised on Nov 30, -0001
  • Accepted on Jan 10, 2002

Correspondence to

  • E-mail: