Konstaftor^® series brand composites

A successful experience in application of our products and results of research and development work of specialists of Constanta-2 LLC allow us to offer a wide range of Konstaftor^® series brand composite materials. We have combined composite materials based on fluoroplastic, polyetheretherketone and other heat-resistant, aggression-resistant high-temperature polymers under this trademark.

Konstaftor Pl composite materials produced on the basis of fusible fluoroplastic copolymers (F-40(ETFE), F-50(PFA), F4MB(FEP)) are characterised by processability, lack of fluidity under load and greater resistance to temperature and pressure than fluoroplastic F4.

Konstaftor 200 is a new high-strength composite material based on fluoroplastic and carbon-ceramic filler, cheaper, designed for seals operating in the environment of oil products.

Konstaftor 300 is F4 fluoroplastic (PTFE (PTFE, teflon)), filled with chemically modified carbon fibre, providing the formation of a rigid framework in the processing of the material in its structure and eliminates creep under load, increases dramatically wear resistance and strength at elevated temperatures.

Konstaftor 300С is a composition filled with glass fibre, molybdenum disulphide and modifying additives. Compared to F4, our material is remarkable for significant reduction of cold-fluidisation and has 2000 times higher wear resistance, preserving good antifriction properties. Moreover, the cost of its products is significantly lower than the cost of products made of other fluoroplastic compositions.

Konstaftor 400 is a highly filled composition based on F-4, with increased yield strength, heat resistance and very low creep, especially at elevated temperatures.

Konstaftor 500 is a bronze-filled composition based on F-4 with low creep and high compressive strength as well as a good wear resistance.

Konstaftor IP is a composition of fluoroplastic with polyester fibres, with a distinguishing feature as a combination of strength and plastic properties.

Konstaftor 46 is a composite based on polyoxymethylene with high strength, abrasion and weather resistance.

Konstaftor 700 is a high-strength composite material based on polyphthalamide, a substitute for polyamide due to its lower water absorption but with excellent resistance to external loads and environmental influences.

Konstaftor P36 is a polyamide-based composite with high strength and abrasion resistance, as well as performance down up to -60°C.

Konstaftor СВМ is a composition based on ultra-high molecular weight polyethylene with unique wear resistance and chemical resistance, with a low coefficient of friction.

Konstaftor 1000, Konstaftor 1000F, Konstaftor 1000С are compositions based on polyether ether ketone (PEEK, REEK). These composite material seals are designed for operation at temperatures from -100°C to +300°C, have high strength properties, low friction coefficient, and high wear resistance allows to use it in heavily contaminated, abrasive media. The listed properties of this composite material are especially required in the oil and gas industry equipment.
Konstaftor 1000 series materials are an excellent alternative to metals in a wide range of industries.

Konstaftor 1000P, Konstaftor 1000U, Konstaftor 1000DSV is a combination of polyphenylene sulphide with organic and mineral fibres to produce a material with high strength, excellent tribological properties, high impact toughness and plasticity.

Konstaftor С, Konstaftor С65, Konstaftor С75 is a composition based on polyphenylene sulphide with fluoroplastic and carbon fillers to produce a material with improved antifriction and elastic properties, low hardness. The main purpose is production of seals alternative to fluoroplastic seals.

The specialists of Constanta-2 LLC are constantly working on improving the composition of raw materials and technologies of production of polymer products and ready to provide customers with products that fully correspond to the operating conditions and modern quality requirements.

Physical and mechanical properties of fluoroplastics and other materials used in seal production:

Common applications of polymer materials:

Some general properties of polymers used in Konstaftor composites.

1. Fluoroplastic is a polymer material produced chemically, a product of tetrafluoroethylene polymerisation.
   Fluoroplastic contains fluorine atoms, resulting in high chemical resistance. Fluoroplastic is the basis of Konstaftor brand composite materials, that is why they are resistant to almost all acids, alkalis, organic and non-organic solvents, petroleum products, in a wide range of temperatures. Unrivalled chemical resistance of Konstaftor fluoroplastic composite provides its use in the chemical industry for manufacturing various parts of chemical equipment, containers, pipelines, membranes, gaskets, sealing elements, pumps.
   Fluoroplastic has a very low friction coefficient, practically not wetted by water and organic liquids, which makes this material indispensable in mechanical engineering as an antifriction and gasket material.
   Fluoroplastic based compositions are prepared by mixing fluoroplastic with fillers. PTFE is mixed with fillers either dry in high-speed mixers or in liquids with the addition of surfactants. In order to obtain optimal properties of compositions it is necessary to use fine grades (particle size less than 20-50 microns) and solid fillers with particle size less than 10 microns.
2. Matrix materials based on thermoplastic polyarylenes and polyheteroarylenes have a number of advantages over thermosetting PCM: heat, fire, crack resistance, low water absorption, short duration of the technological cycle of product manufacturing, waste-free technology, recyclability, unlimited viability of semi-finished products. Polyether ether etheretone, polyphenylene sulfide, polyphthalamide are used for manufacture of moulded products by injection moulding, pressing, stamping, thermoforming, extrusion depending on technological properties of semi-finished products on the basis of unfilled and filled with disperse fillers composites.
   Polyetherketones are aromatic polymers (polyarylenes) with molecular chains consisting of phenylene cycles, carbonyl groups and oxygen atoms.
   Polyetherketones have a unique complex of operational properties: deformation heat resistance, heat resistance. Fire resistance, chemical and radiation resistance, low water absorption, resistance to pyrolysis, which stimulated their development and application, despite the difficulties of processing and high cost.
   The crystallinity degree provides a certain level of impact strength, elastic and strength properties, chemical stability. High melting temperature, high melt viscosity make processing of polyether ether ketone rather complicated. All technological methods of PEEK processing include operations providing optimal cooling rates of moulded products and heat treatment (annealing, at which crystallisation proceeds most rapidly.
   Semicrystalline PEEK is more creep resistant than PTFE even at 260 °C. Due to high deformation heat resistance, resistance to hydrolysis (including hot water vapour), to acids, alkalis, aliphatic and aromatic hydrocarbons (solvents) pipes, rods, discs, rings made of PEEK are used in chemical industry, mechanical engineering, electrical engineering, electronics. Injection moulded PEEK compositions are used to produce pump impellers for chemical industries (service life 18 months, epoxy fibreglass - 2 months).
   PEEK composites are used for injection moulding of plugs, connectors, cores, glass-filled composites are used for insulators for high-power thyristors. Polyetheretherketone-based composites are used for injection moulding of plugs, connectors, cores, glass-filled composites are used for insulators for high-power thyristors.
   PEEK-based composite is used for manufacturing high-pressure compressor valve panels (chemical resistance, strength, heat resistance, sealing properties). The performance of valves determines the efficiency of compressors. In order to achieve lower leakage, lower noise level, longer service life and improved performance, it is advisable to use valves including elements made of Konstaftor 1000 - a composite based on polyetheretherketone. PEEK has excellent impact strength, which allows valves made of Constaftor 1000 to withstand up to 20 million impact cycles. The high abrasion resistance and sealing properties of PEEK result in a more reliable and durable design.
   PEEK chemical nature eliminates the need for modifying additives, which, together with the negligible amount of extractables, provides a high purity sufficient for use in medical and food applications.
   Medical devices made from PEEK compositions can be subjected to any sterilisation method, including the use of α-rays. Polyether ether ketone is used for manufacturing parts of medical equipment and instruments, pumps.
   Injection moulding of polyetheretherketone with discrete carbon fibres produces hydraulic ball valves for the automotive industry, resistant to more than 10 million opening-closing cycles at an operating pressure of 35 MPa.
3. The PPS plastics properties depend on the heat treatment conditions of the initial polymer. Unfilled polyphenylene sulfide has relatively low heat resistance. Significant increase up to 260 °C of deformation heat resistance (HDT\A, T18) is achieved by filling PPS (glass fibres, their mixtures with mineral powders). Different grades of polyphenylene sulphide with dispersed fillers are designed for processing by injection moulding, extrusion and coating. They are characterised by the amount and composition of the filler and specialised according to mechanical, dielectric, thermal and special properties for the manufacture of parts and coatings in electronics, electrical engineering, chemical engineering, automotive. Polyphenylene sulfide-based composites have high physical and mechanical properties (crack resistance, low creep). Temperature index of glass-filled PPS is 200-240 °С (respectively for glass-filled polyamides, polyesters, polysulfones, phenol-formaldehyde plastics 130,140, 150 °С). Polyphenylene sulfide is superior to most thermoplastics in fire resistance. Polyphenylene sulfide has low (about 0.1%) equilibrium water absorption, and its chemical resistance is second only to fluoroplastics. PPS is characterised by high chemical resistance even at elevated temperatures to most dilute acids, alkalis, alcohols, esters, hydrocarbons, phenols, solvents, including amide solvents. Glass-filled polyphenylene sulfide is affected by concentrated acids and strong oxidising agents such as chromic acid, hydrogen peroxide, halogens (especially during heating).