Aqueous suspension of bentonite and its use for coating thermal

Details Aqueous suspension of bentonite and its use for coating thermal Aqueous suspension of bentonite and its use for coating thermal

1985-06-27

1987-06-02

Bell, James J.

Paper making and fiber liberation

Processes and products

Mineral fiber

106 1812, 1621818, 252601, 252610, D21F 1100

Patent

active

046701010

ABSTRACT:
There is prepared an aqueous suspension which in addition to water, consists of 2 to 50 weight % of a mixture of bentonite and inorganic fibers, with the portion of inorganic fiber being 1 to 30 weight % and the portion of bentonite being 1 to 30 weight % and wherein the total amount of solids does not exceed 50 weight %. With the suspension there is attained an improvement of the mechanical properties of thermal insulating molded objects which are employed for thermal insulation and which for example, contain pyrogenically produced silica as a filler by delivery of this suspension on the thermal insulating plate. The suspension can also be delivered on thermal insulating molded bodies on which there is pressed a fiber net or a fiber felt. After applying the suspension several thermal insulating molded bodies can be joined together where the coating formed consisting of bentonite and inorganic fibers acts as binder. The heat insulating molded article in addition to this layer, can have one or more additional coatings based on organic or inorganic lacquer systems, silicone compositions or low melting glazes.

REFERENCES:
patent: 2732295 (1956-01-01), Hollenberg et al.

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