Application with brush

Diacetone alcohol (keto-alcohol) DAA. Boil- Solvents with a high rate of evaporation have a ing point 166°C with decomposition to acetone, tendency to form a dry mist during spray application. With brush application the evaporation must be slow. 

Soaking area in warm wafer for 5 min prior fo application may enhance effect (remove any loose tissue with brush, washcloth, or emery board and dry thoroughly prior to application)... 

Recommended Dilutions as is Applications Paint remover for wood and metal surfaces Notes Paint on with brush and remove with putty knife, steel wool, etc. 

Condensers usually are large air-cooled chambers whose walls are kept clear with brushes or scrapers or even swinging weights. Scraped or brushed surface crystallizers such as Figure 16.10(a) should have some application as condensers. When a large rate of entrainer gas is employed, a subsequent collecting chamber will be needed. One of the hazards of entrainer sublimation with air is the possibility of explosions even of substances that are considered safe in their normal states. 

In the building field, as fire-resistant coating for wood, fiberboard, and metals, they have numerous applications. Unusual usage of the fire-resistant mastics is their application against brush fires on railway trestles constructed of wood which had been impregnated with as much as 3 gallons of creosote-petroleum oils per cubic foot. 

The simplest treatment is an application by brush or spray. Although penetration across the grain is minimal, some penetration along the grain is possible. The additional life obtained by such treatments over that of untreated wood will be affected greatly by the conditions of service, e.g. just brushing untreated wood with a simple wax water-repellent is surprisingly effective for rustic joinery (Feist and Mraz, 1978 Feist, 1984). 

Wood samples measuring 150 x 30 mm were coated with 4 layers of fire-protective coating compositions S ASB for indoor application by brush with layer-by-layer... 

Hydrogenated and modified castor oil is used as an additive to adjust the viscosity and facilitate application with a brush or spray gun (compressed air or airless) layer thicknesses of > 100 pm are thereby achieved [2.11]-[2.13]. 

Other wet paint coating methods are summarized in Table 8.6. Application with a brush or roller is now only used to a great extent in the handicrafts sector, do-it-yourself sector, or on building sites. 

Architectural paints are applied in situ with brushes or rollers in Europe, but spray application is widely used in the USA on concrete and wooden buildings. Paints on windows and doors are brush applied. Structural components (e.g., doors, windows, radiators) that receive primers or complete coating systems during production or in the workshop are dipped or sprayed. 

Hand Lay-uplSpray up Spray up and open contact molding (hand lay-up) in one-sided molds is one of the cheapest and most common process for making fiber composite products. Typical products are boat hulls and decks, truck cabs and fenders. In a typical open mold application, the mold is first waxed and sprayed with gel coat and cured in a heated oven at about 49°C. In the spray up process, after the gel coat is cured, catalyzed resin (usually polyester or vinyl ester at 500-1,000 cP viscosity) is sprayed into the mold, along with chopped fiber. A secondary spray up layer imbeds the core between the laminates (sandwich construction). Then it is cured, cooled, and removed from the reusable mold. In hand layup processing, continuous fiber strand mat and other fabrics such as woven roving are manually placed in the mold. Each ply is sprayed with catalyzed resin (1,000-1,500 cP) and the resin is worked into the fiber with brush rollers to wet-out and compact the laminate. 

Because most latices have low viscosities by compounding, most of the water-borne robber adhesives are sprayable. Thickeners such as fumed silicas can be added to increase viscosity and thixotropy. This means that, even at relatively large viscosities (over 10 Pa.s), many water-based rubber adhesives can be sprayed. Dip and curtain applications require viscosities between 0.05 and 0.3 Pa.s, whereas apphcations with brush works with viscosities between 1 and 50 Pa.s. 

Knifing filler n. Filling composition suitable for application with a filling knife as distinct from one made for brush apphcation. 

An isophthalic/polypropyleneglycol gelcoat available in a wide variety of colours offering excellent surface protection for external and marine application. The normal grade is for brush application with the low viscosity grade for spray. Approved by Lloyd s Registry. 

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