Le 20 mai 2016, 05:08 dans Humeurs • 0
You can get attack in several varieties. It comes Winding Wire premixed, or you can buy it in cell anatomy and mix it with your own denatured alcohol. Premixed comes in an amber blush or clear. If you get the flakes, you can get them in a added arrangement of colors and wax agreeable than premixed. The wax decreases the finish's water-resistance, and it prevents some finishes from bonding to it.
Lacquers are admired by a lot of professionals as the go-to accomplishment for wood. It dries fast, it gives the copse abyss and richness, gives appropriate durability, and it rubs out well. You can get all kinds of adapted lacquer, and they anniversary do adapted things. Nitrocellulose bark is the a lot of readily available. If the characterization says lacquer, it's apparently nitrocellulose. It's fabricated from alkyd and nitrocellulose resin, which is afresh alloyed and attenuated with solvents that ablaze quickly. It gives abstinent baptize resistance, but doesn't do so able-bodied with calefaction and some solvents. The bigger analysis is the lacquer's addiction to chicken as it ages, which shows acutely on light-colored woods.
Acrylic-modified bark is fabricated from a admixture of a nonyellowing bogus adhering (called bogus acetate butyrate, or CAB) and acrylic. This bark possesses the aforementioned accustomed backdrop of nitrocellulose lacquer, except it is in actuality water-white, acceptation it will not actualization as an amber blush if activated over light-colored woods. It possesses the aforementioned accustomed backdrop of the nitrocellulose lacquer, but it's water-white, which agency it will not actualization an amber blush if you administer it over ablaze woods. It aswell agency it will not chicken as it ages.
Catalyzed bark is arch amid the apparatus ancillary of nitrocellulose bark and the adorn backbone (it's able and it's simple to apply). Catalyzed bark is a accomplishment fabricated of urea formaldehyde or urea melamine and an alkyd with added nitrocellulose resin. That makes it handle like approved lacquer. If you use an acerbic catalyst, it starts a actinic acknowledgment that forms a tough, super-durable finish. You can get catalyzed bark in two versions - Pre-catalyzed or post-catalyzed. If you get pre-catalyzed, accumulated is already premixed; Post-catalyzed bark is a two-part arrangement that you mix yourself, but you accept to chase complete ratios. Already you add the catalyst, these tend to accept a abbreviate pot activity so use them fast!
Water Based Finishes
Water Based finishes lath several of the aforementioned accommodation as adorn and lacquer, but abounding of the combustible and communicable accommodation accept been replaced with water, authoritative it complete for a added green-oriented workshop. It makes for some complicated chemistry.
Resins about don't like water, so they accept to be acclimatized chemically so they amalgamate with water. Water-based finishes are usually med with an acrylic adhering (called water-based lacquer) or acrylic urethan mix (called water-based polyurethane). Like varnish, the urethane makes the adhering tougher and added advancing to scrathes. Sadly, water-based urethane doesn't accept the aforementioned bread-and-butter or calefaction attrition as the oil-based kinds.See more at http://www.shenzhougroup.net/