FIRE-AND BIO-PROTECTIVE VARNISH FOR WOOD AND WOODEN MATERIALS«OBEREG VARNISH (BSP)»
ТU 2311-004-73958298-2006
NSOPB.RU.PR.010/2.Н.00051
C-RU.PB47.В.00256
SGR– BY.20.21.01.008.E.001004.06.15
«ОBEREG VARNISH (BSP)» - is a single-component, organic based varnish, ready to use.
The varnish is intended:
- for fire protection of articles and end panels made of wood and wooden materials (veneer, fiberboard, chipboard, MDF, incl. laminated chipboard, LMDF, laminated fiberboard )
- for bio-protection of varnished surfaces from decay, timber destroying, painting and mold fungi.
Itprovides
- the 1st group of fire-proof efficiency according to Russian State Standard GOST R 53292-2009.
- G1 flammability group according to GOST 30244-94
- V2 inflammation group according to GOST 30402-96
- smoke-developed index D2 according to GOST 12.044.1-89, п.4.18
- combustion products toxicity equivalent Т2 according to GOST 12.044.1-89, п.4.20
- flame spread group RP1 according to GOST R 51032-97
- firehazardclassКМ2
THE VARNISH (BSP) IS NEITHER WEAR-RESISTANT NOR INTENDED FOR PROCESSING OF FLOORS.
PHYSICAL, CHEMICAL AND MAINTENANCE PROPERTIES
Appearance
Homogenous fluid of milk color
Appearance of the coat
Homogenous semi-gloss transparent coat, colorless or light amber yellow shaped. It stresses the texture of processed surface.
Density, g/cm3
0,94±0,05at+20ºС
Viscosity according to viscometer at +20ºС, sec.
38
Adhesion to wood, point
1
Thinner, not more than 5% of the mass
Solvent
Packing
5 l, 10 lPolyethylenecanisters
Net weight, kg
5,0 and 10,0 kg
Servicelife :
- on internal and hidden surfaces, not less than, … years.
- on external surfaces, under shelter not less than… years
10
7
Period of storage in intact packing, not more than … months
12
SPECIFICATION
Varnish consumption, g/m2
Varnish consumption, g/m2
Number of layers
Processing wooden constructions and wooden materials (fiberboard, chipboard, MDF, VENEER, incl. laminated chipboard, LMDF, laminated fiberboard) to provide
1st group of fire-proof efficiency according to GOST R 53292-2009
250
2-3
Processing wooden constructions and wooden materials (fiberboard, chipboard, MDF, VENEER, except of laminated chipboard, LMDF, laminated fiberboard) to provide indexes of fire hazard of processed materials G1, V1, RP1, D2, Т2 (fire hazard class КМ2)
250
2-3
Drying time of the first layer, hours (at +20ºС)
1
Achievement time of complete physical and mechanical properties of the cover, hours (at +20ºС)
72
Time for achievement of complete fire-protection grade, days (at +20ºС)
15-20
The varnish consumption is specified without consideration of technological losses.
Technological losses of the varnish while covering are in the range from 5% up to 15% and depend on the method of varnishing, parameters of processed construction and working conditions.
SURFACE PREPARATION
The varnished surface shall be dry and clean.
Before varnishing pine wood constructions, chipboard, laminated chipboard, LMDF,laminated fiberboard it is necessary to degrease the surface additionally with acetone with consistence of 50-100 g of acetone per 1m2 and let it dry.
Before varnishing it is necessary to make a check painting of a small area of the material and let the varnish dry, to make sure that the varnish has a good adhesiveness to this specific surface.
FIRE-PROTECTIVE VARNISHING
The fire-protective varnish «OBEREG VARNISH (BSP)» is supplied ready to use.
Mix the varnish thoroughly before use. Add solvent if necessary.
Fire-protective varnishing is carried out on the prepared surfaces according to these directions for use. The working temperature shall be not below -20ºС, relative air humidity shall be not more than 80%.
During work with varnish it is necessary to avoid ingress of water, because it leads to the formation of turbid white inclusions. The tools for varnishing shall be clean and dry.
The varnishing is carried out by means of airless spraying, with brush or paint roller in 2-4 layers to achieve the requisite consumption. If the varnish is airless sprayed, it can be diluted by solvent.
For airless spraying of varnish it is advisable to use the equipment with following parameters:
Parameters
Values
Working pressure at least, … atmospheres
5
Nozzle diameter, mm
0,42-1,60
Spraying angle, degrees
20-40
Delivery hose diameter, mm
10
Delivery hose length, m
Max 60
It is advisable to keep the brush or roller in the solvent in pauses between varnishing due to fast polymerization of the compound to avoid drying. After works, the sprayer shall be cleaned with solvent or acetone.
The drying between layers at various varnishing methods shall be at least 1 hour (for laminated surfaces – at least 2 hours) at +20ºСand relative air humidity not more than 80%. Before the last layer it is necessary to make sure that the varnish on the surface has been dried up to the detachment. The varnishing with brush or roller increases the drying time by 20-25%. The drying time also increases at lower temperatures and higher air humidity.
FIRE-AND BIO-PROTECTIVE VARNISH FOR WOOD AND WOODEN MATERIALS «OBEREG VARNISH (BSP)»
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