Acrylic varnish is a type of protective coating that comes in two main forms: oil-based and resin-based. Oil-based varnish is commonly known as "Fan Lishui," while resin-based varnish is often referred to as "bubble water." Both are used for surface finishing, but they have different characteristics and applications.
Common types of varnish include:
1. Ester glue varnish (also called water-resistant varnish): This is made by combining dry oil with polyol rosin ester, along with a drier and No. 200 paint solvent. It creates a bright finish with good water resistance, but it doesn't last long in terms of gloss and has poor drying properties. It's typically used for wood or metal surfaces that require light protection.
2. Shellac varnish (commonly known as "bubble water" or alcohol varnish): Made by dissolving shellac in high-concentration ethanol. It dries quickly and enhances the natural grain of wood. However, it lacks durability against water and sunlight, and may become cloudy when exposed to hot water. Ideal for decorative wood finishes.
3. Novolac varnish (often called "Yongming paint"): This is created using dry oil phenolic paint mixed with a drier and No. 200 paint solvent. It dries fast, produces a tough and glossy film, and offers good heat and water resistance. However, it can yellow over time and become brittle. Suitable for wood finishing or painting over oily surfaces.
4. Alkyd varnish (also known as Sambo paint): Made from medium oil alkyd resin dissolved in organic solvents and a drier. It dries quickly, has high hardness, and provides a smooth, shiny finish. It’s resistant to heat but not very durable in harsh weather conditions. Used on both indoor and outdoor metal and wood surfaces.
5. Nitro varnish (also known as clear spray paint or wax): Formulated from nitrocellulose, alkyd resin, and tougheners dissolved in a mix of esters, alcohol, and benzene. It offers excellent gloss and durability. Often used for wood and metal finishes, as well as an exterior enamel topcoat.
6. Acrylic varnish: Made from methacrylate and methacrylic copolymer resins, along with toughening agents dissolved in a mixture of esters, alcohols, and benzene. It provides excellent weather and heat resistance, as well as strong adhesion. Commonly used for aluminum alloy surfaces.
7. Polyester ester varnish: Produced using polyester scraps, oleic acid, rosin, pentaerythritol, and glycerin, combined with a drier, No. 200 paint solvent, and xylene. It dries white and creates a bright, durable film, ideal for wood surfaces and metal masking.
8. High-performance varnish: Chengmei Paint's high-performance varnish uses fluorocarbon resin, super weather-resistant pigments, and multi-functional additives. It comes in A and B components and offers ultra-durability, low pollution, and resistance to various environmental factors. It forms a hard, dense layer that prevents concrete carbonization.
9. Fluorocarbon varnish: This two-component, room-temperature curing varnish from Chengmei Coatings is based on fluororesin. It provides exceptional weather resistance and long-lasting performance. It’s suitable for multiple coatings and substrates, including epoxy, polyurethane, acrylic, and fluorocarbon paints. It protects metal, wood, plastic, ancient artifacts, landmark buildings, and imitation metal exterior walls.
Coupling Nuts are internally threaded fasteners that join threaded rods, pipes, and other threaded parts, sometimes parts of differing sizes.
Metric Coupling Nut, Hex Coupling Nuts, Stainless Steel Coupling Nuts
Coupling Nut, Hex Coupling Nuts, Metric Coupling Nut, Coupler Nuts, Stainless Steel Coupling Nuts
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