Anti-adhesive coatings and their properties

Mukhametov R.R., Petrova A.P., Ponomarenko S.A.
UDC
678.026
DOI
10.18577/2307-6046-2018-0-12-88-96
Article PDF (Russian) (589.94 KB)
How to cite
Mukhametov R.R., Petrova A.P., Ponomarenko S.A. Anti-adhesive coatings and their properties // Proceedings of VIAM. 2018. No. 12. DOI: 10.18577/2307-6046-2018-0-12-88-96. URL: https://test.viam.ru/en/journal/2018/12/10
Keywords
anti-adhesive properties, hydrophobicity, anti-adhesive coatings, organosilicon compounds, adhesive strength.
Abstract

The creation and development of new polymer composites requires continuous improvement of their physicomechanical and performance characteristics. PCMs breakdown begins from their surface often and it is important to provide its solidity and water repellent properties, including for improvement of performance characteristics of materials.

In the aviation industry, hydrophobic compounds are mainly applied at present to tooling processing at molding processes of polymer binders to prevent their adhesion.

Compounds based on organosilicon monomers and oligomers are the most widely used due to their efficiency and availability. One of the essential disadvantages of the use of such compositions is the need for curing to prevent their transfer to material moldable. Therefore, it is important to research the influence of cold curing catalysts on coatings properties and choose optimal ones.

In this work, the anti-adhesive characteristics of several organosilicon compounds – K-21 anti-adhesive lubricant, 136-157M water repellent liquid and GK-10 polymethylphenylsiloxane with hydride groups – were estimated and compared. Coatings were prepared from a solution in hexane by dipping. The best coating was chosen by adhesive strength of materials cured glued together by polyurethane glue PU-2. The completeness of curing of the anti-adhesive coatings was also estimated according to adhesive strength of materials cured before and after extraction with hexane in a Soxhlet device.

The work shows the effective use of catalysts 230-15 and AGM-9 and their optimal content is selected, the optimal composition and concentration of the anti-adhesive coating, as well as the curing mode to achieve the required characterist

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