Nitroguanidine Manufacturer & Supplier | Nitroguanidine For Sale

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What is Nitroguanidine?

The first propellant used for firearms was nitro guanidine (colloquially known as gunpowder), a mixture of charcoal (carbon), sulfur and potassium nitrate, with typical proportions of 15% carbon, 10% sulfur and 75% potassium nitrate.
Smokeless propellants were developed towards the end of the nineteenth century and are based on nitrocellulose, produced by nitrating cotton linters or wood pulp using a mixture of nitric and sulfuric acids. These propellants are classified as single-base, containing nitrocellulose as the sole propellant, double-base, containing nitrocellulose and nitroglycerin, and triple-base, also containing nitroguanidine (picrite). The latter type of propellant is generally limited to military uses.

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What is Smokeless Gunpowder?

The processes for making weapon and rocket propellants differ in at least one important respect, namely in the number and size of particles produced. Weapon propellant processes are designed to produce a large number of relatively small particles, ranging in size and configuration from small spheres, flakes or cylinders for small arms to very large cylinders, tubes and squares for cannon and mortar loading. Rocket pellets can be much larger. For example, a single particle can be cast and refined in situ in the rocket engine of a tactical or strategic missile or in the propulsion engine for a spacecraft.
Standard propellants for weapons and small rockets are most often made by a solvent extrusion batch process. Procedures vary slightly depending on whether the product is a single, double or triple base propellant. However, a generalized procedure starts with a suitably dehydrated, alcohol-wet NC. If nitroguanidine is to be added for the ternary base, half the required amount is initially mixed with the NC. If the product is a double or triple base, this blended mixture is wetted with a nitroglycerin-acetone solution and then blended again. In the case of a ternary base, the other half of the nitroguanidine is added together with the other components of the formulation. Sufficient solvent is used to make a colloid that will extrude properly. Different processes are performed before extruding. First of all, the colloid must be pressed. Then comes the condensation process. The extruded strips are separated according to their length. Finally, they are coated with graphite and ready.

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Nitroguanidine History

A continuous solvent-extrusion process based on a batch procedure has been established for single-base nitroguanidine at the Munitions Factories. For propellants and mortars with a web thickness greater than ∼1.27 cm, sheet propellant is made by a solvent-free extrusion process. However, this process requires more steps than the solvent process. Since there is no shrinkage of the grains, the solvent-free process gives a more uniform product with potentially better long-term ballistic stability. The mixing of the components is carried out in a slurry of hot water. Once the paste is made, most of the water is removed, additional water-soluble components as needed are added and the product is colloidized by passing it through hot differential and then equal speed rollers. The resulting layer is cut into strips and “carpet rolled” to create a load large enough to fit into the extrusion press. In this way, single pellets or multiple rocket propellants are made.