Polyurethane Structural 2 pt Expanding Pour Foam 4 lb. density 2 Cubic Foot

Closed Cell Structural Polyurethane Foam System 4LB Density 2 Cubic Foot Coverage KIT

THIS FOAM KIT IS CONSTRUCTION GRADE, A LITTLE MORE BRITTLE THAN STANDARD FOAMS, EASY TO CUT.

SLOW TO RISE

VOID FILLING, INSULATION, NON BENDING OR BEARING APPLICATIONS

This mix and pour system is suitable for void filling and flotation purposes. It is also used to cast and cut strips/blocks of foam to be used as core material in composite layups (boats, boards, showers etc), and is compatible with all resin systems. Or just about anything else you can think of including surround form packaging and shipment of expensive items through the mail. As well As Thermal and acoustic insulation

*8LB/4LB Density Kit will produce 2 cubic foot of closed cell foam*

How do I know if my foam is doing what it is suppose to do???

Did I get a bad or expired batch??

Did I make a mistake?

A simple method that we use in our shop prior to use is to mix a small quantity, say 100g from the A side and 100g from the B side. Mix A&B (always pour A into B) and pour into a container such as a cardboard box with (6"x6" with a height of 10"). Calculate the cubic inchs produced by the mixture, (a x b x c) this is your cubic inchs, lets say it produced 241ci of foam. Divide 241 by 1728 (inchs in a cubic foot) and we get 0.139. Multiply 0.139 X Listed Foam Density, in this case 0.139 X 2.5 = 0.348. Multiply 0.348 X 450 to get grams which = 156.6 grams. This lets us know that our results are off from the listed 2.5 Density as 156.6g is much less than our starting point of 200g. If we go back up and grab the "red" number 0.139 and re-multiply it by 2.9 (a higher density), we get 0.4031, then multiply 0.4031 X 450 = 181.39g total. Considering that we have non used residue in both the A and B cups and mixing utensil we can conclude that our mixing session produced a foam closer to the density of 2.8- 2.9lbs.  Which is mixing error, or temp related as the 80degree A&B for this example was poured into a cold 71 degree cardboard box. So by not elevating the temperature of the box we wasted a little bit of our mix and created a higher density foam

CI/1728= 0.139 -----> 0.139 X 2.5(labled density) = 0.348----> X450 = 156.6g

Coverage Chart Approximations

Paintable: YES, when you use compatible polyurethanes

Chemical Resistant: YES, will resist acetones and fuels but will eventually degrade if subjected for extended durations

Fire Retarded: NO

Is this foam expired or beyond its shelf life? NO! Letter of conformance upon request. Expired foam systems rarely perform as well on any level as when mixed from quality non expired batches.

Do you use this foam? YES, we use this foam and many other densities to make boat parts, car parts, industrial parts, home products, safety products

How Does the foam react in low quantities? For this listing we mixed 100g of A and 100g of B and it produced 241ci of foam in 50sec with a max surface exotherm of 121F, and tack free in 4minutes. We also cut the foam block to show the internal cell structure of the mix, which remained small and compact (see pic with penny), with no stretch out or voids, or uneven density bulking. Thumb compression had great rebound and it was not brittle (brittleness suggests a severly weak foam).

Is 4lb density stronger than 2.0lb?: Yes, as an industry standard

Is the foam chemical exposed to UV degradation?: NO. Our foam chemicals arrive in UV blocking containers and ship in UV blocking containers....we never ship clear bottles of any chemical. Ever.

Environmentally Friendly: Yes, employs HFC-245fa

ASTM C-591, Grade 2, Type IV Section 1605 of ARRA of 2009: Yes

33CFR 183.114 Coast Gaurd Spec.: yes

Free Rise Density: 2.5 pcf

Physical:

Core Density pcf ASTM D1622: 4

Closed Cell Conten % ASTM D2856: >93

Compressive Strength PSI ASTM D1621: 35;24

Viscosity @ 77F: 925cP Resin side, 200cP Iso side

Mix Ratio by Volume: 100:100

Mix Ratio by Weight: 100:114

Health: 1

Flammability: 1

reactivity: 0