①Thinner is also called "filler". When the original drug is processed into powder, or in order to facilitate spraying, an inert substance is added for dilution. Such as: clay, kaolin, clay, talcum powder, etc.
② Diluent is a liquid substance with good miscibility with the resin added in order to reduce the viscosity of the resin and improve its process performance. Divided into reactive diluents and inactive diluents.
③ Diluent is a material used to reduce the viscosity or consistency of ink.
4 Materials that must be used in paint to adjust the viscosity and consistency of the paint
Common thinners
Banana water
Banana water is also The main component of Mingtian Na Water is xylene, which is highly volatile, flammable, explosive, and toxic. It is a dangerous product. It is called banana water mainly because it has a strong banana smell.
Prepare a mixed solvent of ethyl acetate, n-butyl acetate, benzene, toluene, acetone, ethanol, and butanol according to a certain weight percentage, which is called banana water. Pure banana water is a colorless, transparent and volatile liquid with a strong banana smell. It is slightly soluble in water and soluble in various organic solvents. It is flammable and is mainly used as a solvent for spray paint and Thinner.
Preparation method of banana water:
According to weight ratio, take 15% n-butyl acetate, 15% ethyl acetate, 10-15% n-butanol, 10% ethanol, acetone 5 to 10%, benzene 20%, xylene 20%, and then mix them thoroughly to make banana water.
There is not much difference between paint and lacquer and they can be used with each other. The composition of coatings can be divided into four parts: film-forming substances (base materials), volatile matter, pigments, and additives. The mixture of base material and volatile matter is often called paint. The amount of additives is very small. Mixed solvents are often used in paint production. This mixed solvent is used as the solvent and diluent of the base material. Thinner is not a true solvent for the base material, but it helps the base material dissolve in the solvent. It should be cheaper in true solvents. Adding diluent can reduce the cost of paint formulations. Solvent selection often adopts the principle of similar miscibility and the use of solubility parameters. Use rosy water and banana water. Gasoline, special thinner, etc.
Flux
Generally speaking, the functions of flux mainly include "assisting heat conduction", "removing oxides", "reducing the surface tension of the material to be welded", and "removing the material to be welded" Surface oil stains, increased welding area", "prevention of re-oxidation" and other aspects. Among these aspects, there are two key functions: "removing oxides" and "reducing the surface tension of the material to be welded". Flux is divided into lead flux and lead-free flux for tin bars. From the perspective of cleaning, it is divided into clean type and no-clean type. According to the color of solder joints, they are divided into bright type and matt type. The main active ingredient in flux is rosin. Rosin will decompose at about 280 degrees Celsius, so the temperature of the tin furnace should not be too high.
Electronic flux categories: environmentally friendly flux, lead-free flux, no-clean flux, FLUX, hot air leveling flux, low-solid no-clean flux, water-cleanable flux, resin-type no-clean flux Flux, spray tin flux, organic soldering flux OSP
Cleaning agent
Cleaning agent [1] includes: acetone circuit board cleaning agent, alcohol mixture, wetting agent, alkane Jing mixture, isopropyl alcohol, chlorine solvent.
Electronic cleaning agents: environmentally friendly cleaning agent, environmentally friendly washing water, PCB cleaning agent, trichlorethylene, trichloroethane.
Carbon 9 refers to the 9 carbon atoms on the carbon chain in the alkane series.
The main components of gasoline are octane and nonane, which are carbon 8 and carbon 9. The higher the octane content, the higher the octane number. The "number" of gasoline is the octane number.
C9 is a chemical diluent