Physical Properties of Soy-Phosphate Polyol-Based Rigid Polyurethane Foams

Table 5

Foaming formulation of rigid polyurethane foams with different isocyanate indices.

Ingredients	Partsbyweight^a
B-side materials	Control PU foams	SPP PU foams
VORANOL 490 (petroleum-based polyol)	100	80, 50
Soy-phosphate poyol (soybean oil-based polyol)	0	20, 50
Dimethylcyclohexylamine (gelling catalyst)	0.84	0.84
Pentamethyldiethylenetriamine (blowing catalyst)	1.26	1.26
Dabco DC 5357 (surfactant)	2.5	2.5
Distilled water (blowing agent)	3.0	3.0
A-side material
Isocyanateindex^b of PAPI 27	70, 80, 90, 100, 110	70, 80, 90, 100, 110

aAll recipes and calculations are based on 100 total parts by weight of polyol, which conventionally dictates that the sum of all polyols adds up to 100 parts.
bThe amount of isocyanate is based on the isocyanate index. The isocyanate index is the amount of isocyanate used relative to the theoretical equivalent amount.