Application of nitrocellulose
Nitrocellulose, also known as cellulose nitrate or nitrocellulose, is an organic polymer compound with the chemical formula (C6H7N3O11) n. It is the product of the esterification reaction between cellulose and nitrate, usually in the form of white or slightly yellow cotton fluff, insoluble in water, but soluble in organic solvents such as esters and acetone
Nitrocellulose, also known as cellulose nitrate ester, abbreviated as NC, commonly known as nitrocellulose, is the product of the reaction between cellulose and nitrate. Nitrocellulose made from cotton fibers is called nitrocellulose. Nitrocellulose is a white fibrous polymer that is resistant to water, dilute acids, weak alkalis, and various oils. Different degrees of polymerization result in different strengths, but they are all thermoplastic substances. Easy to change color under sunlight and highly flammable. Attention should be paid to safety in production, processing, packaging, storage, transportation, sales, and use.
others nameï¼?Nitrocotton; Cotton body collodion; Low nitrogen nitrocellulose
1.Nitrocellulose, also known as nitrocellulose, cotton body collodion, etc., is a nitrate ester, white or slightly yellow cotton wool, soluble in acetone. It is the product of esterification of cellulose and nitric acid. Cellulose nitrate is produced by esterifying refined cotton with concentrated nitric acid and concentrated sulfuric acid.
2.Casï¼?9004-70-0
3. Appearance: White or yellowish cotton wool
4.useï¼?Nitrocellulose has two main applications, military and civilian. The military part mainly focuses on the production of weapons, explosives and explosives, and implements the management of military products. The civil part is used in paint, celluloid, artificial fiber, film ink, cosmetics and other fields.
Cellulose nitrate is a white fibrous polymer that is resistant to water, dilute acids, weak alkalis and various oils. Insoluble in water, soluble in acetone, ethyl ether ethanol mixture. Easy to change color under the sun, extremely flammable, smoke-free, instant release of a lot of gas. Different degrees of polymerization, its strength is also different, but are thermoplastic materials. It changes color easily in sunlight and burns easily. In the production and processing, packaging, storage and transportation, sales, use should pay attention to safety.
Main use
(1) High nitrogen content commonly known as fire cotton, used to make smokeless gunpowder; Low nitrogen content commonly known as collodion, used to manufacture spray paint, artificial leather, film, plastic and so on.
(2) Used for making cultural and educational supplies, daily necessities, instrument signs, etc
(3) Used in ink, leather, various nitrocellurocelluloses, rubber caps, typing wax paper, etc
(4) For the production of cultural and educational supplies, daily necessities, instrument signs, etc., for ink, leather, various nitro paints, etc., for the pharmaceutical industry, photographic negatives, photographic negatives and leather manufacturing
(5) celluloid, announced by the European Union on October 26, 2006, banned for the manufacture of toys.
Nitrocellulose is a white, odorless, and odorless solid. Celluloid plastic is a thermoplastic material containing 20% camphor plasticizer. It softens significantly at 80 , can be molded and processed at 110-125, and can self ignite above 165 . Transparent, soft, with high mechanical strength and low water absorption. No deformation and no white spots in boiling water for 2 minutes. Stable to water and general dilute acid solutions, can be corroded by dilute alkaline solution, partially soluble in benzene and dichloroethylene, and soluble in solvents such as ethanol and ethyl acetate.
Method of production
Nitrocellulose is a mixture of acid that nitrates cellulose, undergoes acid removal, pre washing, boiling, washing, dehydration, and then uses alcohol to remove water, resulting in nitrocellulose containing alcohol.
purpose
Nitrocellulose is mainly used in the plastic industry to manufacture stationery and educational items such as table tennis balls, triangular plates, pen holders, eyeglass frames, toys, and umbrella handles and tool handles in daily necessities. Nitrocellulose can also be used as a fiber, adhesive, coating, and substrate material.
Security
This product is non-toxic. This product belongs to Class A flammable dangerous goods. Packaged in wooden boxes with plastic bags lined inside. Each box should not exceed 160kg, or packaged according to user requirements. There should be a "flammable" mark on the outside of the box. Storage should be placed in a dry, ventilated, and clean warehouse, away from heat sources and direct sunlight. It should not be stored together with acidic, self igniting, and explosive materials. It is strictly prohibited to approach open flames. Transportation should be protected from sunlight and rain, and should be carried out in accordance with the transportation regulations of the transportation department for dangerous goods.
Forming processing
CN is fully kneaded with plasticizers (such as camphor), solvents (alcohol), dyes (or pigments) in a kneading machine at 36, and then filtered in a pressure filter at 60 . The filtered material is rolled on a two roller rolling machine, and the resulting thin sheet is crushed, dried, flattened, or polished to obtain sheet-like CN plastic. The rolled thin sheet can also be placed into an extrusion machine to form a tubular object.
Solid type: white powder or granules, hygroscopic, readily soluble in water. The aqueous solution may absorb CO2 and form aluminum hydroxide precipitate. Addition of NaOH is required to increase stability.
Liquid type: transparent slurry, stable during storage life. Prolonged stay of diluted aqueous solution may cause aluminum hydroxide precipitate.
Use:
In the construction process, it can be used as leaking stoppage agent combined with the sodium silicate.
In paper-making, this product can mix with aluminum sulfate to be a good filling agent.
In water treatment, it can be used as additive of purifier.
