1. Nitrocellulose Paint Thinner: Nitrocellulose paint thinner is a commonly used paint thinner for nitrocellulose lacquer, primer, magnetic paint, and other nitrocellulose-based paints. It has excellent thinning properties and can quickly blend into the paint, making it an ideal paint thinner.

2. Vinyl Chloride Paint Thinner: Vinyl chloride paint thinner is used for vinyl chloride paint products, including varnish, primer, putty, magnetic paint, etc. This type of thinner has good thinning ability but evaporates quickly. Therefore, it is important to work quickly when using this thinner for painting.

3. Amino Paint Thinner: Amino paint thinner is specifically used for amino paint. It differs from other thinners in that it can be dried together with amino paint under high temperature conditions. It has good heat resistance.

4. Acrylic Paint Thinner: Acrylic paint thinner is used to thin acrylic paint. However, it can also be used to thin nitrocellulose paint. It has a slower evaporation rate compared to vinyl chloride paint thinner, so there is more time flexibility for application.

Please note that these translations are provided for informational purposes only and may not be accurate in all contexts. It's always recommended to consult professional sources or manufacturers for specific paint thinner recommendations.

1. Why is it best to use primer as a base coat for leveling in the painting process?

Primer is specifically designed for leveling purposes, with excellent filling and sanding properties. It is cost-effective. On the other hand, using topcoat for leveling would result in poor filling performance and higher costs.

2. What are the requirements for painting environment?

The ideal temperature for the painting environment is between 15-25°C, with a minimum temperature not lower than 5°C and a maximum temperature not higher than 35°C. The optimal humidity range is 30-70%. Good ventilation equipment is necessary, and the environment should be kept clean. Adequate lighting is also important. Care must be taken to keep electrical equipment away from paint.

3. Why is it emphasized to use compatible clear coat, curing agent, and thinner for coatings?

Different coatings have different dilution systems and solid contents. If incompatible thinners or curing agents are used, it can affect the crosslinking reaction of the paint, resulting in issues like insufficient hardness, slow drying, or film cracking.

4. Why is it important to follow the specified mixing ratio when preparing coatings?

The mixing ratio of paint and curing agent is calculated based on the chemical reaction formula. The ratio should be strictly controlled. Excessive curing agent can cause the film to become brittle, leading to bubble formation and higher levels of matte gloss. Insufficient curing agent results in inadequate film hardness, poor scratch resistance, and slow or no drying.

5. Why is thorough stirring necessary during paint application?

Paint is a mixture of resin, pigment, and solvent, rather than a solution. Pigments and matte powders in particular tend to settle within the paint over time, resulting in layer separation. Therefore, paint needs to be thoroughly stirred before use to ensure uniform mixing.