Phenolic Resin for Exterior Insulation Board
Mafotokozedwe Akatundu
Utoto umagwiritsa ntchito ukadaulo wa melamine ndi resorcinol wosintha kawiri kuti uwongolere mawonekedwe apamwamba a ortho ndi kuchuluka kwa methylol phenolic resin, ndikupanga utomoni wa phenolic wokhala ndi thovu lofanana ndi thovu la polyurethane.Utoto uli pa kutentha kwina.Kuchita thovu kumakhalanso ndi nthawi yodziwikiratu ya emulsification, nthawi yotuluka thovu, nthawi ya gel, komanso nthawi yochiritsa.Zakwaniritsa kusintha kwakukulu pakupanga chithovu, ndipo zitha kugwiritsidwa ntchito popanga matabwa opitilira thovu a phenolic.The thovu opangidwa ali ndi ubwino wabwino dimensional bata, chithovu chabwino ndi otsika matenthedwe madutsidwe.
Cholinga Chachikulu: Utomoni ukhoza kugwiritsidwa ntchito popitiliza kuumba kuti apange phenolic foam insulation board.
Zizindikiro Zaukadaulo
| Maonekedwe | Viscosity mPa.s( 25°) | Phenol yaulere (%) | Free aldehyde | Chinyezi (%) | Zolimba (%) |
| Madzi owala achikasu mpaka ofiira ofiirira | 2500-5000 | <10.0 | ≦1.0 | <12.0 | ≧75.0 |
