SU99856A1 - The method of obtaining the active filler for rubber compounds - Google Patents

Description

Light fillers are used to make colored rubber products, in particular synthetic rubber produced on a basis of. Known fillers, for example, Catalpo, are in most CoPuchaev roads, since organic solvents are required for their manufacture.

The method for preparing the bright active filler described below is simple and does not require the use of organic solvents. The materials used here are: quicklime with calcium oxide content of 96-98%, kaolin and aqueous solutions of soaps from fatty naphthenic acids or their salts.

The lime is quenched with an aqueous solution of the soap gradually, to a pasty state. The resulting mass, containing water-soluble calcium soaps, is mixed with water to form a highly dispersed suspension, and then mixed with kaolin to a paste-like state, after which it is squeezed and converted into powder in a known manner.

Alternatively, the quickened lime is thoroughly mixed with kaolin, after which the mixture is treated with an aqueous solution of soap and brought to a state of powder.

The abrasion resistance of rubber using filler obtained by the described method is greatly increased. Thus, the rubber abrasion index based on SKB-41 with this filler is 516, and the same rubber with a filler of the usual type (kaolin + soap) has an indicator of 820.

Subject invention

Claims (2)

1. A method for producing an active filler for rubber compounds by activating mineral substances with an aqueous solution of soaps, in that, to activate, quicklime is quenched with an aqueous solution of soap, the resulting calcium hydroxide mass, calcium soap and water are mixed with kaolin to a paste state, after which the paste of the obtained active filler is powdered by known methods. 2. A variation of the method for producing an active filler according to claim 1, characterized in that first the quicklime is mixed with kaolin, and then the resulting mixture is treated with an aqueous solution of soap. After loading the room, the room is filled with ethylene oxide or a mixture of it with methyl bromide from a gas cylinder having a special measuring device. (Small rooms are charged from the ampoules). At the end of the disinsection period, the room with food is ventilated by sucking fresh air through it with a 10-fold exchange for half an hour, for which the room must be equipped with an explosion-proof fan and electric motor. The discharged product is ventilated under a canopy for half an hour before shipment, and the planting material is washed twice with water. The dosage of fumigant (from 35 to 50 g of ethylene oxide or from 20 to 33 g of ethylene oxide with the addition of 20-35 g of gaseous methyl bromide per cubic meter of room) and the gassing time: (from 2 to 4 hours) is determined, depending on on the type of product, its average temperature and humidity, according to special tables. Subject invention The method of disinfecting vegetable goods from a compass bite in hermetically sealed rooms, characterized in that, in order to more completely disinfect various plant products from all phases of the development of compass bones while preserving product quality, as well as reducing the cost of processing, gaseous is used as a disinfectant pure ethylene oxide in a concentration of from 35 to 50 g per cubic meter of space or from 20 to 33 g of ethylene oxide with the addition of 20-35 g of gaseous methyl bromide while continuing flax gassing from 2 to 4 hours.