Traditional Culture Encyclopedia - Traditional customs - The drying process of solvent-based coatings is divided into two stages. What are the factors that determine the volatilization rate?
The drying process of solvent-based coatings is divided into two stages. What are the factors that determine the volatilization rate?
Solvent evaporation film physical drying film traditional thermoplastic solvent-based coatings such as chlorinated polyolefin, nitrocellulose, acrylic resin and CAB polyvinyl formal are dissolved in a fixed solvent system and prepared in two stages: 50% solid coating is applied, and solvent evaporation is considered as solvent evaporation after solvent evaporation and solidification;
In the first stage, the influence of solvent evaporation on the film is mainly determined by the vapor pressure of the solvent or the evaporation rate between phases.
In the second stage, with the increase of the viscosity of the solvent evaporation coating, the free volume solvent-reducing coating diffuses to a certain extent until the surface is blocked, and the evaporation of the solvent on the coating surface is controlled by the diffusion change, and the evaporation rate is obviously slowed down.
- Previous article:Why are Chinese studies becoming more and more vulgar?
- Next article:What's the telephone number of Xinchang Ancient Town in Chengdu?
- Related articles
- What are the characteristics of xiang opera's accompaniment bands and traditional plays?
- How to fold a paper flower
- Problems and countermeasures that may arise from the work of computerized accounting
- How about Jiuguzhai moon cake?
- How to fry something crisp?
- Give the novel a classic name.
- What are the advantages of vegetable delivery service?
- What does Cambodia eat for three meals a day?
- Pictures and materials in the lecture hall of Chinese studies ¡ª¡ª How to understand the subject, predicate, object, adverbial, attribute and predicate in a sentence?
- Development of Hotel Decoration Design