The role of surfactants in nitrocellulose brighteners Nitrate brighteners play an important and even dominant position in leather topcoats, although a variety of finishing materials such as proteins, polyacrylates, and polyurethanes compete with them. . Surfactants play a decisive role in the development of nitrocellulose brighteners. Since the appearance of nitrocellulose brightener in 1920, it has been used in the form of solvent-based top coating. However, after the 1970s, many countries have enacted environmental regulations to control the use of organic solvents to avoid harm to health, environmental pollution, and safety. It is imperative to change the solvent type to water emulsion type. By relying on the solubilization, emulsifying, wetting and infiltration of surfactants, the continuous medium of nitrocellulose brightener is converted from solvent to water, and a water-based brightener is developed, which greatly reduces its dependence on solvents. Make it basically meet the requirements of environmental regulations. Surfactant also acts as a leveling agent to reduce the surface tension of the nitrocellulose brightener, giving the coating a smooth and high-gloss feel and effect. The main types of nitrocellulose brighteners are nitrocellulose brighteners, which are divided into three types: solvent type, water emulsion type and oil-water type. The solvent-based solvent-based brightener is a plasticizer or (and) resin-modified nitrocellulose, which is prepared by using a solvent, a diluent, and an additive. The additive has a gloss-adjusting matting agent, an additive for improving leveling and hand feeling, and mainly a silicon surfactant such as polyether-modified silicone, which gives the bright coating a smooth hand and high gloss effect. At present, the application range of solvent-based brighteners is getting smaller and smaller, and it is only necessary in the coating of some effect leathers. The successful development of water emulsion type water emulsion type brightener has made nitrocellulose brightener widely used. It is a water-based, solvent-containing emulsion obtained by emulsifying a solvent-based brightener (oil phase). In the emulsification process, the oil phase is dispersed into an emulsion by means of mechanical energy or physical energy provided by an emulsification device such as a high-pressure homogenizer, a high-shear mixing emulsifier, an ultrasonic disperser, etc., and a surfactant, mainly an emulsifier, is added to reduce The surface tension of the oil phase increases the thermodynamic stability of the emulsion. Concerned about surprises Label: The coating gives a smooth and high-gloss feel and effect Previous: Bathroom feng shui layout is good for brocade brocade Next: Solid wood furniture maintenance is very important Led Tunnel Light,Led High Bay Light,Led Tunnel,Led Light Tunnel Jiamei Energy(hongkong) Limited , https://www.jiameilight.com