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2. Moisture cure polyurethane - Wikipedia

   en.wikipedia.org/wiki/Moisture_cure_polyurethane

   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.

3. Varnish - Wikipedia

   en.wikipedia.org/wiki/Varnish

   A table green wood-stained and varnished with three layers of polyurethane varnish. Polyurethane varnishes are typically hard, abrasion-resistant, and durable coatings. They are popular for hardwood floors but are considered by some wood finishers to be difficult or unsuitable for finishing furniture or other detailed pieces. Polyurethanes are ...

4. Wood flooring - Wikipedia

   en.wikipedia.org/wiki/Wood_flooring

   Generally, older solid hardwood floors need to be buffed every 3–5 years. The process usually takes about one day. Buffing refers to the process of using a stand up floor buffer. The floor is abraded with 180 grit screen on the buffer. This allows for the new coat of finish to mechanically adhere to the floor.

5. Wood drying - Wikipedia

   en.wikipedia.org/wiki/Wood_drying

   Drying time is inversely related to thickness and, to some extent, the width of the lumber. Whether the lumber boards are quarter-sawn, flat-sawn, or bastard-sawn (mixed-sawn) Sawing pattern influences the distortion due to shrinkage anisotropy. Permissible drying degrade Aggressive drying schedules can cause timber to crack and distort.

6. Polyurethane - Wikipedia

   en.wikipedia.org/wiki/Polyurethane

   Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.

7. Plywood - Wikipedia

   en.wikipedia.org/wiki/Plywood

   Hardwood plywood is characterized by its excellent strength, stiffness, durability and resistance to creep. It has a high planar shear strength and impact resistance, which make it especially suitable for heavy-duty floor and wall structures. Oriented plywood construction has a high wheel-carrying capacity.