Polyurethane paint thinner is a common paint additive. It is added to the paint because of its It can be quickly diluted and blended into polyurethane paint, giving the polyurethane paint better viscosity and adhesion. It can also enhance the wear resistance and anti-aging ability of polyurethane paint and extend its service life. Polyurethane paint thinners are mainly A mixture of additives and solvents.
1. Additives, also called auxiliary material groups of coatings It is an integral part of the coating, but it cannot form a coating film by itself. It can exist in the coating film as a component in the coating film after the coating film is formed.
2. Coating additives include a variety of inorganic and organic substances Compounds, including polymers. Solvents are components contained in various liquid coatings, excluding solvent-free coatings, that are necessary to complete the construction process of these types of liquid coatings.
The difference between polyester paint and polyurethane paint
Polyester paint and polyurethane paint, in terms of chemical composition, Not a thing. Polyester paint generally refers to unsaturated polyester paint, which is mainly used in factories that produce furniture. It is difficult to buy real polyester paint products on the market. Usually it has four components, namely main paint, initiator, accelerator and reactive diluent. The ratio is very strict. After the paint is applied during construction, wax (or film) must be used to seal the surface (already have air-drying properties). , can not be sealed), it can be completed after curing and then machine grinding, polishing and other processes, so the process is more complicated, but its paint film is tough and plump, suitable for manufacturing high-end furniture, audio casings, etc. The so-called 'polyester paint' commonly seen on the market is actually polyurethane paint. It is a two-component paint, one is the main paint, and the other is the curing agent. When using, mix it according to the required proportion, add an appropriate amount of diluent, stir evenly, and then paint it. The process is simple and suitable for home decoration.
Precautions for handling polyurethane paint
Closed operation and enhanced ventilation. Operators must undergo special training and strict Follow operating procedures. It is recommended that operators follow the personal protection requirements of item 8. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment to prevent steam from leaking into the workplace air and avoid contact with oxidants. Pay attention to the flow rate (not exceeding 5m/s) when filling, and have a grounding device to prevent the accumulation of static electricity. When transporting, load and unload with care to prevent damage to packaging and containers. Equip with fire-fighting equipment of the corresponding variety and quantity. Emergency equipment should be used during emergency rescue or evacuation.
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