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Building Materials

August 12, 2017 18:08

The solvent P4 - take what others can not afford

solvent P4 - a material characteristic

Among the wide variety of support materials for painting works, used in the preparation of surfaces or as additives to a paint solution (in order to give them the required properties), are important solvents.

Such a mixture of simple organic compounds used to work with epoxy, perhlorvinil and other lacquers and enamels.Solvent grade P-4 Standard defines as a mixture of twenty-six percent of acetone, butyl acetate, and twelve percent of the sixty-two percent of toluene.

solvent R-4, GOST 7827-74 , can work with many varnishes and enamels, in particular on the basis of chloride resins.The combination of its components effective for adjusting the density of paints and varnishes to working viscosity.It is highly volatile, and this is based on the technique of its use.After the paint is applied, there is evaporation of the solvent, a film-forming substance hardens becoming a protective coating.

solvent P-4a can dissolve the gray and protective enamel XB-124, which distinguishes it as a modification of the conventional composition of the R-4.Both solvents have the form of colorless or slightly yellowish homogeneous liquid having a characteristic peculiar smell, no visible suspension.In both formulations contained less than one percent water.

solvent grade P-4 - and the use of harmful

As P-4A, the solvent P4 are also available to use as a diluent because of its component properties.The presence of butyl acetate prevents fading and whitening films applied paint composition and contributes to the improvement of their shine.

But keep in mind acetone property is easily mixed with water.Do not allow water to enter the mixture at work.This may cause whitening transparent and distortion of color coatings.

Almost all solvents have a high degree of fire danger.No exception and brand solvent F-4: the characteristics of its components provide easy flammability and explosiveness composition of their mixture.Couples of the same butyl acetate are heavier than air and can accumulate in the lower part of the room, a large concentration of explosive vapors.

Similar dangers are accumulating vapors of acetone and toluene.The latter, as is known, is used as raw material in the production of trinitrotoluene.In the application of such fluids are required to comply with fire safety requirements.As it recommended extinguishing agents Carbon dioxide, air and mechanical and chemical foam fire extinguishers, fine water spray.

solvent P-4a - machinery safe operation

are going to buy and use F4 in the work should take into account the requirements of sanitary hygiene.All the components included in the mixture, have an adverse effect on the mucous irritant airway and organs of vision.

work in closed and unventilated areas associated with prolonged inhalation of vapors cause a narcotic effect, disorientation and dizziness, cough, severe headache and dizziness.Possible severe edema, central nervous system damage and food poisoning in pairs.

negative impact tends to accumulate in the body.Proceeding from the above, with compounds carried with the exhaust and fresh air ventilation, with the use of protective measures respiratory tract and organs of vision, gloves or mittens.