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| L-5614 |
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Silicone Surfactant
L-5614 silicone is a highly stabilizing surfactant desinged for use in mechanically frothed foam. Its unique structure promotes cell stabilization even in the highly filled formulations often used in this technology. Cell stabilization is critical to this process for several reasons: It controls the ultimate density of the frothed foam. It is the key to generating a froth with sufficient stability to withstand the high shear zones in the mixer, delivery system and applicator, and the high temperature of the curing oven without significant collapse. Good cell stability allows excellent gauge control upon application to a substrate. In addition, the procduct controls both cell size and cell size distribution in the froth. Control here leads to an air dispersion with a viscosity high enough to minimize strikethrough with certain types of fabric substrates and yet low enough to allow good flow characteristics. Typically, 2 to 4 parts of L-5614 surfactant per hundred parts of polyol are sufficient to achieve proper control. In this use level range, it has no effect on the physical properties of the foam, and foam densities ranging from 190kg/㎥ (12 pcf) to about 320kg/㎥(20 pcf) can be obtained.
L-5614 catalyst have exhibited significant utility in a wide variety of applications. A typical filled froth foam formulation that might be used in several of these applications is given below as a reference system. Note that both L-5614 catalyst were designed for use in froth systems utilizing polymeric MDI as the preferred isocyanate. |
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Appearance : Slightly hazy liquid
Viscosity at 25'C,cSt : 14,000
Specific Gravity at 25'C : 0.92
Weight per Gallon at 25'C, lb : 7.67
lash Point, Pensky-Martens Closed Cup(1), 'C('F) : 88(190) |
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Nine Chemical
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