Fire suppressant foam forming compositions, precursors, their uses and methods of making them
A technology of composition and water-based composition, which is applied in the field of fire extinguishing foam and improves the fire extinguishing properties of foam, and can solve the problems of low foam stability and the like
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1 to 5
[0076] The foam stabilization properties of various inorganic particulate materials were tested.
[0077] Various inorganic particulate materials (10% by weight) were mixed into a 0.3% by weight foam solution of sodium lauryl ether sulfate (MEYCO SLF30, supplied by BASF) in water, and the resulting composition was mixed using a laboratory foam generator. The resulting foam (60 g) was filled into a funnel basin with a frit coarse enough that the mineral particles did not block the drainage of the foam, thereby affecting the result, with a collector at the bottom and allowed to stand. The disintegration of any foam was measured by measuring the amount of water collected below the funnel basin.
[0078] The particulate inorganic materials tested are shown in Table I:
[0079] Table I
[0080] Example mineral 1 CaCO 3
2 dolomite 3 Kaolin 4 and 5 talc Comparative example 1 none
[0081] Observe the amount of water collected for...
Embodiment 6 and 7
[0086] In another test series, a 3% by weight foam solution of sodium lauryl ether sulfate (MEYCO SLF 30, supplied by BASF) in water (without inorganic particulates) was compared with other surfactants with and without inorganic particulates . Polymer A is sodium lauryl sulfate (SLS) and polymer B is tetradecyltrimethylammonium bromide (TTAB). The compositions shown in Table III were mixed using a laboratory foam generator. The talc used in Examples 6 and 7 was d 95 6.2μm and d 50 1.8 μm coarse crystalline talc (according to Sedigraph – ISO 13317-3).
[0087] Table III
[0088] Example combination Comparative example 2 Water, 3% by weight MEYCO SLF 30 Comparative example 3 Water, 3 wt% SLS Example 6 Water, 5% by weight talc, 0.05% by weight SLS Example 7 Water, 5 wt% talc, 0.05 wt% TTAB
[0089] The resulting foam (60 g) was filled into a funnel basin with a frit and a collector at the bottom and allowed to stand. Also, measure...
Embodiment 8 and 9
[0094]Foams were tested using deionized water (Example 8) or standard tap water (Example 9) in the presence of various amounts of talc and tetradecyltrimethylammonium bromide (TTAB). The talc used was microcrystalline talc supplied by Imerys Talc with a BET surface area of 21m 2 / g (ISO 9277), with a median particle size of 1.1 μm (according to Sedigraph – ISO13317-3). TTAB is used as a 5% aqueous stock solution. Foams were prepared by combining the talc and TTAB stock solutions and making up to 100 grams using deionized or tap water. The resulting composition was mixed using a laboratory foam generator. The resulting foam was filled into a funnel basin with a frit and a collector at the bottom and allowed to stand. The disintegration of any foam was measured by measuring the amount of water collected under the funnel sump. Various test parameters are shown in Table V.
[0095] Table V
[0096] Example parameter Example 8a 0.05 wt% TTAB, 2.5 wt% talc...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More