Other

Leonid A Akopian

Fridrikh S Dyachkovsky

Nikolai S Enikolopov

Tatyana A Maklakova

Ljudmila A Novokshonova

Olga I Kudinova

Leonid A Kostandov

Jury A Gavrilov

Alexandr A Staroselsky

Vladimir P Tkachenko

Otar P Mchedlov-Petrosian

Khaim-Mordkhe A Brikenshtein

Mikhail I Boiko

Mikhail I Boilko

The composite material, which is a solid porous carrier, whose pores are filled with a polymer, a polyolefin having the molecular weight not less than 300,000, the degree of pore filling with said polymer being at least 4 percent of the total volume of the pores, in which the ratio of the carrier mass to the mass of the polymer is 50-99.5:50-0.5. The method of producing said composite material consists in precipitation, from the gas phase, of a complex organometallic catalyst consisting of a compound of a transition metal and of an organic compound of a metal in the 2nd or 3rd group of the Periodic Table, inside the pores of a solid porous carrier, and in polymerization of olefins from the gas phase on said catalyst, precipitated in the pores of the solid porous carrier, at a temperature of 50.degree.-165.degree. C. and a pressure of 1-60 atm. The composite material is characterized by high mechanical strength (compression strength reaching 100-200 kg/sq.cm) high frost resistance, and hydrophobic properties. The proposed method effectively controls the degree of filling the carrier pores with the polymer (from at least 4 percent of the total volume of the pores), and can be used to manufacture composite materials possessing a predetermined set of properties.

Method of producing a composite material

According to the invention, the method for applying a polymer coating onto the surface of a solid filler comprises deposition of a complex organometallic catalyst, containing a compound of a transition metal and an organic compound of a metal of the second or third groups of the periodic system, on the surface of the solid filler and liquid- or gas-phase polymerization of olefins at a temperature of 50.degree. to 170.degree. C. and a pressure of 1 to 60 atm on said catalyst deposited on the surface of the solid filler. The deposition is carried out in two stages. The first stage is gas-phase deposition of the first component of the catalyst, i.e. a compound of a transition metal, on the surface of the solid filler. The second stage is gas- or liquid-phase deposition of the second component of the catalyst, i.e. an organic compound of a metal of the second or third group of the periodic system. Polymer coatings produced by this method are marked by a high quality and uniformity, as well as good adhesion to the surface of the solid filler. The coating density is 0.7 to 0.95 g/cm.sup.3. The thickness of such coatings can be varied within a broad range from a minimum of 7.multidot.10.sup.-3 g/m.sup.2. The method according to the invention permits a considerable reduction in the consumption of the initial monomers and the catalyst; for example, the catalyst consumption can be reduced to a value as low as 0.001 to 0.1 percent of the weight of the filler on conversion to vanadium tetrachloride. The method is quite simple technologically.

Method for applying polymer coating composition

The composite material, which is a solid porous carrier, whose pores are filled with a polymer, a polyolefin having the molecular weight not less than 300,000, the degree of pore filling with said polymer being at least 4 percent of the total volume of the pores, in which the ratio of the carrier mass to the mass of the polymer is 50-99.5:50-0.5. The method of producing said composite material consists in precipitation, from the gas phase, of a complex organometallic catalyst consisting of a compound of a transition metal and of an organic compound of a metal in the 2nd or 3rd group of the Periodic Table, inside the pores of a solid porous carrier, and in polymerization of olefins from the gas phase on said catalyst, precipitated in the pores of the solid porous carrier, at a temperature of 50.degree.-165.degree. C. and a pressure of 1-60 atm. The composite material is characterized by high mechanical strength (compression strength reaching 100-200 kg/sq. cm) high frost resistance, and hydrophobic properties. The proposed method effectively controls the degree of filling the carrier pores with the polymer (from at least 4 percent of the total volume of the pores), and can be used to manufacture composite materials possessing a predetermined set of properties.

Composite material and method of producing same

Growing community of inventors

Moskovskaya oblast, undefined

Leonid A Akopian