LACQUER COATING SYSTEM BASED ON COLD DRY POLYURETHANE ENAMEL FOR PROTECTING NOSE SPINNERS OF PLANES

Recently in the aviation industry there has been an increasing demand for the development of functional paints and varnishes, in particular, for the production of coatings intended to protect aviation equipment from abrasion and erosion damaged. Coatings of this type are especially relevant for polymer products. This work is devoted to the development of a new polyurethane enamel for the protection of antenna radomes. The comparative data of fluoroplastic, polyurethane imported enamel, enamels based on chlorosulfonated polyethylene and fluorinated rubber, intended for protection of abrasive damage.

Evaluation of machining content and labor intensity of manufacturing products of new nomenclature when determining the cost of fulfilling an order at highly specialized machine-building enterprises

The problem of operational calculation of machining content and labor intensity of manufacturing parts of a new nomenclature, mainly processed by cutting, at highly specialized machine-building enterprises when calculating the technical and economic indicators of the order is considered. The proposed estimation algorithm is based on the operational calculation of the machining content of cutting operations and the calculation of the reduced labor intensity of heat treatment operations, electroplating and lacquer coating, as well as locksmith and control operations.

Experimental Study of Thermal Effect of Lacquer Coating for PV-Trombe Wall System Combined with Phase Change Material in Summer

This paper proposes a novel PV-Trombe wall system combined with phase-change material, which is named as PV-PCM-Trombe system. The work mainly experimentally studies the effectiveness and characteristics of using phase change materials to improve the overheating problem of PV-Trombe wall in summer. Through experiments, the photoelectric performance of the system using phase-change board surfaces with and without a matte black paint lacquer are compared; moreover, the influence on thermal environment of building is evaluated. The results indicate the PV-PCM-Trombe wall system shows an effective cooling effect on PV cell in both experiments and that the surface lacquer coating treatment of PCM plates affects little the photoelectric performance of the system and can reduce the working temperature of PV cell.

TO THE QUESTION OF CORRECT FUNCTIONABILITY OF CORROSION PROTECTION SYSTEM CONCERNING SERVICE VESSEL STEEL HULL

The main protection systems against corrosion of steel hull are lacquer coating and protective action (PA). The running regime control of these systems must be performed by the crew. Nevertheless, Kamchatka fleet crews don’t perform the control alluded to rated resources for lacquer coating (2 years) and for PA (2 years). It has been found that everyday control of protection system is necessary against corrosion of vessel hull if the service vessels run in coastal waters of Kamchatka during winter. The authors have proposed the means of control which effectiveness was proved on a service vessel of Kamchatka fleet. The crew and the ship-owner opportunely got information about protection system modification in state of nonoperability. This permitted organizing maintenance of vessel hull in proper time and cutting down maintenance expenses and reducing repair period by 8-10 times.