What are the elements that must be considered when designing paint formulations?

In actual production, the paint is always unqualified. One try and one groping, one time a small test and pilot, reflected in the spirit of the paint people perseverance and a love of paint.
many times, will also look back at those most basic knowledge, will think is not in the formulation design process, which factors have not been taken into account?
to establish a coating formulation that meets the requirements for practical use has been a long-term and complex subject

. In general, there are several factors to consider when designing coating formulations.
1, coating objectives and objectives
such as substrate materials, is high-grade products (such as cars, aircraft, precision instrumentation, etc.) or low-grade products (such as household appliances, internal and external walls, bridges, plastics, paper, etc.).
2, coating performance requirements
is the general decoration, or play a protective role, or give the coated object a special function, such as anti-corrosion, anti-fouling and so on. Generally speaking, the performance of the coating film has a certain degree of relativity, such as hardness and flexibility, adhesion and film-forming, hydro-hydro and waterproof, corrosion-resistant and episodural performance, therefore, the pursuit of a performance, will inevitably damage other performance, formulation design needs to find the balance of these performance points.
3, the use of the environment and construction
such as indoor or outdoor, high or low temperature, dry or humid.
4, film-forming substances
i.e. the chemical properties and physical properties of the resin, such as room temperature drying curing or reaction curing, softness/hardness ratio, with the coating substrate bonding, weather resistance, UV radiation resistance, corrosion resistance and so on.
5, volatiles
i.e. the physical and chemical properties of solvents and thinners, such as volatility rate, boiling point, solubility of resin, toxicity and flash point.
6, pigment properties
e.g. coloring force, covering force, density and substation solubility (dispersion), light resistance, weather resistance and heat resistance.
7, the role of additives
such as anti-sinking, anti-flow hanging, anti-orange peel, de-foaming properties, to help pigment wet dispersion, improve the construction of coatings and film-forming properties.
8, cost considerations
including raw material costs, production costs, storage and transportation costs. Coatings for high-grade products, the performance requirements are higher, the price can be more expensive, for low-grade products, the performance can be slightly worse, the price can be cheaper.
9, competitive factors
clearly designed paint formulation products are new products on the market or other companies already have similar products, if the latter, to compare the design of products and other products in terms of performance and price advantages, including the performance of the coating itself, such as solid content viscosity, density, PVC and storage period; Force, need to be applied several times to meet the required performance requirements, is normal temperature drying or heating reaction curing into a film, paint film performance, such as softness / hardness ratio, adhesion, weather resistance, UV radiation resistance, acidity and alkalinity, chemical resistance, solvent resistance, stain resistance, temperature resistance and moisture resistance. In order to determine whether a product in one or several major performance better than the existing similar products on the market, or similar performance but the price has a great advantage.
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