摘要:
Ammonium perchlorate particles having strongly adherent wettable coatings are made by treating the particles with stong amines that displace ammonia to form amine perchlorates at the particle surfaces. Silanylamines are preferred since after amination of the perchlorate the silane groups can be hydrolyzed to siloxanes having good wettability by liquid polymeric propellant binders. The coated perchlorate can be used to produce solid propellants having improved mechanical properties and burning characteristics.
摘要:
An explosive grade aluminium composition comprises an admixture of aluminium powder and a subdivided carrier therefor having a bulk density less than or equal to that of the aluminium powder and wherein at least part of the powder adheres to the carrier, a coating agent being optionally included in the admixture to facilitate the adhesion of the powder to the carrier.
摘要:
This patent describes high energy propellant ingredients in particulate f containing thereon a crosslinked siloxane polymer envelope or coating from an organic hydrolyzable silane having a functionality greater than 2. This patent also describes a method of providing a cross-linked siloxane polymer coating on finely divided high energy propellant ingredients by suspending the finely divided ingredients in an inert solvent, introducing therein a hydrolyzable organic silane having a functionality greater than 2 and subsequently isolating the polymer coated product in a dry free-flowing particulate form after stripping of the solvent.
摘要:
Trioctylphosphine oxide and tributylphosphine oxide are representative of e phosphine oxide compounds which are utilized in isocyanate curable composite propellant compositions to extend usable pot life required for mixing and processing of the specified compositions. The compositions are comprised of a binder of hydroxy terminated liquid polymer systems, (e.g. hydroxy terminated polybutadiene and the like) optional selected plasticizers, optional metal fuel, and the inorganic oxidizer, ammonium perchlorate, that is substantially of very fine particle size (less than 20 microns).
摘要:
A rocket propellant composition having an exceptionally high burning rate may be prepared by incorporating therein an oxidizing salt which comprises at least in part an ammonium salt characterized by a porous structure.