What are the consequences of nitro paint nitrocellulose put too much

Nitrocellulose paint (code Q) is nitro paint, commonly known as "spray paint". Its main raw material is nitrocellulose, that is, nitrocellulose, which is made of cotton fiber or cottonseed linter fiber nitrified with nitric acid and sulfuric acid. The nitrogen content of nitrocellulose for coating is about 12% (nitrogen content is for smokeless gunpowder, 10% and 11% for celluloid).

Nitro paint is made of nitrocellulose dissolved in a mixed solvent with synthetic resin and plasticizer. The synthetic resins used are divided into hard resins and soft resins. Hard resins such as rosin glyceryl resin, rosin modified maleic anhydride resin, etc., which make the coating film glossy, hardness improved, and have good polishing performance; Soft resins such as modified alkyd resins, amino resins, epoxy resins, acrylic resins, etc., can significantly improve the weather resistance, mechanical properties and gloss of coating films.

Plasticizers are another important component in nitro paints, which can improve film flexibility and adhesion and reduce permeability. Plasticizers can be divided into two categories: dibutyl phthalate, dioctyl phthalate, dioctyl phosphate, etc.; Non-solvent-based plasticizers mainly include castor oil and oxidized castor oil.

Nitro paint is a volatile and dry coating, so the solvent composition in the formula directly affects the solubility, volatilization rate, film-forming performance, production cost and pollution degree of the coating. Solvents for nitro paints include: !

True solvents such as butyl acetate, ethyl acetate, acetone. "Co-solvents, such as butanol, ethanol. Co-solvents do not dissolve nitrocellulose by themselves, but their addition increases the solubility of true solvents to nitrocellulose.

Diluents: such as toluene, petroleum hydrocarbons. The diluent does not dissolve nitrocellulose, and only plays the role of dilution and reduces the cost of solvent.

The biggest feature of nitro paint is that it dries quickly, and it can be dried ten minutes after construction, which can shorten the working hours, and the paint film is hard and wear-resistant, has enough mechanical strength and durability, is easy to polish, polish and wax, and has good gloss. The disadvantage is that the solid content is low, the drying film is thin, and multiple processes are required for construction; During construction, a large amount of solvent volatilizes and the pollution is serious; In the construction of high humidity environment, the paint film is easy to turn white. Nitro paint is widely used in machinery, light industrial products, electrical instruments, wood furniture, pencils, leather, etc., and is an important type of coating products.

Flammable and flammable**.

Nitrocellulose has a high degree of flammability and high quality, and its danger degree depends on the degree of nitrification, nitrocellulose with a nitrogen content of more than % is extremely dangerous, and it burns in case of fire.

When the temperature exceeds 40, it can accelerate its decomposition and spontaneous combustion. Although nitrocellulose with less than % nitrogen content is relatively stable, it will gradually decompose and release acid after being heated or stored for a long time, reducing the ignition point, and there is also the possibility of spontaneous combustion and self-explosion.

There will be a lot of chemicals in our lives, some of which we often use, and some of which we don't know and don't understand, but there may be chemical components in the items we use in our livesNitrocellulose for coatingsWhat are the functions? What are the key points of using nitrocellulose for coatings? Let's introduce it to you together.

First, the role of nitrocellulose for coatings.

Nitrocellulose is a white or yellowish amorphous solid, flocculent in appearance, specific gravity, insoluble in water, soluble in alcohol, ether and ester solution. Nitrocellulose is highly flammable and highly combustible and dangerous, and its danger depends on the degree of nitrification. The nitrogen content above is extremely dangerous, and it will burn in case of fire.

The burst point is 180 185. It is safer when it contains 25% water. When the temperature exceeds 40, it can accelerate its decomposition and spontaneous combustion, the detonation rate is 6300m s, although the nitrogen content is insufficient, although it is relatively stable, but it is heated or stored for a long time, and the acid is released due to gradual decomposition, reducing the ignition point, and it is easy to have the possibility of spontaneous ignition or **.

To prevent decomposition, stabilizers are often added to avoid **.

Second, the key points of the use of nitrocellulose for coatings.

1.Since the cotton will retain its original form after nitration (the strength of the paper will be significantly reduced), it is necessary to take into account the uneven distribution of the solution due to the influence of gravity when adding potassium nitrate and diphenylamine. Vaseline and graphite can also play a stabilizing role, but due to the unclear uniform addition method, they are not considered for the time being.

2.The reaction waste acid can be extracted by extrusion, which is used to produce low nitrification of the clump nitrocellulose cotton, which can be used as a fuse, and the washed waste acid will corrode the sewer system, especially the faucet, sewer pipe under the pool and other metal items. Diphenylamine is strictly forbidden to see sunlight and will turn blue.

Other drying steps should be air-dried as much as possible, not sun-drying, and it is strictly forbidden to dry if it is to be stored for a long time.

3.Sodium carbonate concentration, boiling time, reaction time, and potassium nitrate concentration are all personal experimental results, and the amount of diphenylamine added is borrowed from the standard addition amount of military gunpowder, and these data can be optimized and adjusted. Do not nitrify ethylene glycol, glycerin, starch and other substances, the reaction cooling conditions are too harsh, and it is easy to occur**.

Wood products will be corroded by mixed acid, and make mixed acid yellow, but will not be carbonized too quickly, the preservation of nitrocellulose has no obvious impact, and wooden chopsticks can also be used when taking nitrocellulose from the solution.

Now we use a lot of chemical components in the items, so what are the functions and key points of use of nitrocellulose for coatings, after reading the above introduction, we also understand these, so if you want to know more about decoration, please continue to pay attention.

nitrocellulose with high nitrogen content, used to make smokeless gunpowder; Minitorinous cotton with low nitrogen content is used to make spray paint, Chongyu bridge tanning, film, plastic, etc. It is used to make stationery and educational supplies, daily necessities, instrument signs, etc.

Summary. Hello Dear, I am already sorting out the answer for you, typing takes some time, please wait patiently Dear, hello The main use of nitrocellulose.

1. Nitrocellulose with high nitrogen content is used to make smokeless gunpowder; Nitrocellulose with low nitrogen content is used to make spray paint, artificial leather, and glue.

sheets, plastics, etc.

2. It is used for making stationery and educational supplies, daily necessities, instrument signs, etc.

3. Used in ink, leather, various nitro paints, plastic caps, typing wax paper, etc.

Nitrocellulose mainly produces celluloid, motion picture film, and manufactures various nitro paints, wood coatings, metal coatings, and typing wax.

Paper, lacquered cloth, instant printing ink, nail polish, bottle seals, adhesives, etc.

What is the effect of transferring paint plus nitrocellulose.

Hello, it is a pleasure to serve you, the answer to your question is being queried and sorted out, please wait a moment. Thank you.

Dear, hello I am already sorting out the answer for you, it takes some time to type, please wait patiently Dear, hello The main use of nitrocellulose is 1, nitrocellulose with high nitrogen content, used to make smokeless gunpowder; Nitrocellulose with low nitrogen content is used to make spray paint, artificial leather, film, plastic, etc. 2. Use the bright light to make stationery and educational supplies, daily necessities, instrument signs, etc. 3. Used in ink, leather, various nitro paints, plastic caps, typing wax paper, etc.

Nitrocellulose mainly produces celluloid, motion picture film, manufacturing all kinds of nitro paints, wood coatings, metal coatings, typing wax paper, lacquered cloth, quick printing inks, nail polish, bottle seals, adhesives, etc. <>

Summary. The nitrocellulose used for coating is a white or pale yellow amorphous solid with a flocculated shape and a specific gravity that is insoluble in water and easily soluble in alcohol, ether and ester solutions.

Nitrocellulose is highly flammable and explosive, depending on the degree of nitrification.

The risk of higher nitrogen levels is very high and will burn in the event of a fire. The burst point is 180 185 ° C. It's safer when it's 25% water. When the temperature exceeds 40, it accelerates.

To prevent decomposition, stabilizers are usually added to avoid**.

Hello, I have seen your question and am sorting out the answer, please wait a while The Xiaozheng nitrocellulose used for coating is a white trembling or or light yellow amorphous solid, the shape is flocculating, the specific gravity is, insoluble in water, soluble in alcohol, ether and ester solution. Nitrocellulose is highly flammable and explosive, depending on the degree of nitrification. The risk of higher nitrogen levels is very high and will burn in the event of a fire.

The burst point is 180 185 ° C. It's safer when it's 25% water. When the temperature exceeds 40, it accelerates.

To prevent decomposition, stabilizers are usually added to avoid**. Ashwagandha.