Loading...
Please wait, while we are loading the content...
Similar Documents
Fully water-blown polyisocyanurate-polyurethane foams with improved mechanical properties prepared from aqueous solution of gelling/ blowing and trimerization catalysts
| Content Provider | Scilit |
|---|---|
| Author | Sukkaneewat, Benjatham Sridaeng, Duangruthai Chantarasiri, Nuanphun |
| Copyright Year | 2019 |
| Abstract | Fully water-blown polyisocyanurate-polyurethane (PIR-PUR) foams with improved mechanical properties have been prepared using aqueous solutions of metal-ammonia complex, Cu(Am) or Zn(Am), as gelling/blowing catalysts and potassium octoate (KOct) solution in diethylene glycol as a trimerization catalyst. Two catalyst mixtures, Cu(Am)+KOct and Zn(Am)+KOct, were obtained as homogeneous aqueous solutions. In comparison to commercial catalyst system, DMCHA+KOct (DMCHA = N,N-dimethylcyclohexylamine), Cu(Am) and Zn(Am) could be miscible with KOct solution and water easier than DMCHA. This miscibility improvement led Cu(Am)+KOct and Zn(Am)+KOct to show faster catalytic reactivity in PIR-PUR foam reactions than DMCHA+KOct. All obtained PIR-PUR foams showed self-extinguishing properties and achieved HF1 materials. However, PIR-PUR foams prepared from Cu(Am)+KOct and Zn(Am)+KOct at NCO:OH ratio of 2:1 had suitable density for industrial applications and showed higher compressive strength than that prepared from DMCHA+KOct. These foams have high potential to apply as insulations for constructions, core laminates in wall panel or storage tanks. |
| Related Links | http://www.degruyter.com/downloadpdf/j/epoly.2019.19.issue-1/epoly-2019-0028/epoly-2019-0028.xml |
| Ending Page | 289 |
| Page Count | 13 |
| Starting Page | 277 |
| ISSN | 21974586 |
| e-ISSN | 16187229 |
| DOI | 10.1515/epoly-2019-0028 |
| Journal | e-Polymers |
| Issue Number | 1 |
| Volume Number | 19 |
| Language | English |
| Publisher | Walter de Gruyter GmbH |
| Publisher Date | 2019-05-29 |
| Access Restriction | Open |
| Subject Keyword | E-polymers Polymer Science Fully Water-blown Polyisocyanurate-polyurethane (pir-pur) Foams Aqueous Catalyst Solutions Mechanical Properties Self-extinguishing Properties Hf1 Materials Journal: e-Polymers, Vol- 19 |
| Content Type | Text |
| Resource Type | Article |
