Main Sector of relevance\IRC classification 8. Industrial Manufacturing, Material and Transport Technologies


8.68 Chemical activation of fluoroplastics and creating of composite structures for machine-building and chemical industry on the basis thereof

Developers’ contact information

SSPA “The Scientific and Practical Materials Research Center of the National Academy of Sciences of Belarus”
19/1/225, P. Brovka Str., 220072 Minsk

V. P. Novikov.
Tel.: +375 (17) 284-11-26; e-mail: novikov@ifttp.bas-net.by

Summary

Electrochemical and chemical technologies for activating fluoroplastic surface were proposed. As a result of such activation the surface fluor atoms are substituted by active chemical groups – acetylide, carboxylic amide, etc. Owing to activity and polarity of these groups, the surface acquires adhesion and affinity to materials. Activation can be realized according to the set pattern with resolution of about 20-50 μm.
The activated fluoroplastics in the form of powders or films are used for creating composite materials and structures for friction bearings, devices that are operated in corrosive liquids and high-frequency radiotechnics.

Description

Fluoroplastic has a number of unique properties: anomalously low friction coefficient, chemical inertness to intense oxidizers, wide temperature range of applicability (from +300 °C to -273 °C), high electrotechnical characteristics in microwave range. At the same time, due to its inertness, fluoroplastic is almost never compacted, and almost never interfaces or agglutinates with other materials. This circumstance hampers creating of fluoroplastic-based composite materials, structures and constructions having fluoroplastic interfitting with metals, plastic, ceramics.
Electrochemical and chemical technologies for activating fluoroplastic surface were proposed. As a result of such activation the surface fluor atoms are substituted by active chemical groups – acetylide, carboxylic amide, etc. Owing to activity and polarity of these groups, the surface acquires adhesion and affinity to materials. Activation can be realized according to the set pattern with resolution of about 20-50 μm.
The activated fluoroplastics in the form of powders or films are used for creating multipurpose composite materials and structures for the following branches of engineering: machine-building industry (for friction bearings manufacturing), chemical industry (in devices operated under extreme ambient conditions – e.g. in electric heaters for corrosive liquids), high-frequency radiotechnics, etc.

Technology type

Technical advantages and economic benefits

Allows creating qualitatively new materials and devices with an advanced spectrum of properties.

Technology differentiation and uniqueness

Powder Metallurgy Institute (National Academy of Sciences of Belarus), “HM Group” (Russia), the new models have been tested.

Context in which technology was identified

Technological keywords

Fluoroplastic, activation, composite structures, frictionproof materials, microwave devices.

Development Stage

Intellectual property rights

Range of applications

Machine-building, chemical industry, high-frequency radiotechnics, consumer appliances.

Classifier Used at the EU Innovation Relay Centres

Preferable Regions

Practical experience

Service models of a number of devices have been created.

Environmental impact

None.

Type of collaboration sought

Terms and restrictions

The technology transfer shall include authorial accompaniment.

Available technical assistance