Varnish PF-283

Specifications:

No	Name of the indicator	Requirements TNPA
		Top grade	First grade
one	Iodometric lacquer color scale mg J 2 / 100cm 3 , which is darker than	130	300
2	The appearance of the coating	After drying, the varnish should form a uniform, transparent, without foreign inclusions surface
3	Gloss of a film on photoelectric gloss meter,%, not less	80	60
four	Relative viscosity by viscometer type VZ – 246 (or VZ – 4) at a temperature of (20.0 ± 0.5) ° С, s	40 – 60	40 – 60
five	Mass fraction of nonvolatile substances,%	50 ± 2	50 ± 2
6	Drying time to degree 3, h, not more: at temperature (20 ± 2) ° С at temperature (60 ± 2) ° С	36 3	36 3
7	Flexural elasticity of the film, mm, not more	one	one
eight	Film hardness by pendulum device, not less: type TML (pendulum A), rel. units type M- 3, conventional units	0.15 0.35	0.13 0.35
9	Resistance of a varnish film to static exposure to water at a temperature of (20 ± 2) ° С, h, not less	eight	four
It is allowed to increase the viscosity of the varnish during storage, if, after dilution with a solvent to the conditional viscosity, the varnish meets the requirements of the TNPA

 

Surface preparation: the  wooden surface is pre-cleaned with sandpaper and cleaned of dust, the metal surface is cleaned of contaminants (fat and others), rust, scale.

 

Coating:  before use, the varnish is thoroughly mixed and, if necessary, diluted with turpentine or a mixture of turpentine with white spirit (nefras – C4-155 / 200) in a 1: 1 ratio.

 

To apply a varnish on a surface a kraskoraspylitel or a brush.

Drying time of each layer at a temperature of (20 ± 2) ° С – 36 h.

 

Varnish consumption  for single-layer coating – 70 – 75 g / m².