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After a successful run with the product, Z-Spar was sold to a company called Koppers. Shortly after Z-Spar joined Koppers, they would purchase the Woolsey line, merging the two companies under one name. Pettit Marine Paint was established in 1972, after the unification of three lines of marine paint manufactures – Pettit, Woolsey, and Z-Spar. [4]
Originally, spar varnish was a "long oil" varnish, composed primarily of drying oil with a small proportion of resin, usually boiled linseed oil and rosin. [1] This gave flexibility, [ 2 ] even though its weather resistance was still poor, and thus re-coating was required relatively frequently.
Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...
A spar is a pole of wood, metal or lightweight materials such as carbon fibre used in the rigging of a sailing vessel to carry or support its sail. These include yards , booms , and masts , which serve both to deploy sail and resist compressive and bending forces, as well as the bowsprit and spinnaker pole .
New ship being prepared for launch, showing fresh anti-fouling paint Ship hull being cleaned of fouling in drydock. Anti-fouling paint is a specialized category of coatings applied as the outer (outboard) layer to the hull of a ship or boat, to slow the growth of and facilitate detachment of subaquatic organisms that attach to the hull and can affect a vessel's performance and durability.
The mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat. Its purposes include carrying sails , spars, and derricks , giving necessary height to a navigation light , look-out position , signal yard , control position , radio aerial or signal lamp . [ 1 ]
Moisture cured polyurethane–urea coatings have been made by reacting 1,2,3-triazole rich polyether polyols with HMDI at NCO/OH eq. ratio of 1.2 to obtain isocyanate-terminated polyurethane prepolymers. The prepolymers were cured under atmospheric moisture to make polyurethane–urea free films.
A cell spar consists of a cluster of small-diameter cylinders and relatively speaking, cheap to manufacture. Cylinders are either buoyancy only, or subdivided into buoyancy and ballast. The first spar platform was the Brent Spar. Designed for storage and offloading of crude oil products, it was installed on the UK's Brent Field in June 1976.
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