Why is HNS used as a thermal explosive?

Hexanitrostilbene (HNS) is a widely used explosive, due in part to its high thermal stability. Degradation of HNS is known to occur through UV, chemical exposure, and heat exposure, which can lead to reduced performance of the material.

What is the thermal stability of HNS-IV?

HNS-IV (2,2′, 4,4′, 6,6′ – Hexanitrostilbene) is a well characterized energetic material that is used in a variety of aerospace, military, and industrial systems. It is an insensitive explosive, and is thermally stable to temperatures of over 200 C.

Which is the best explosive for foil initiators?

HNS-IV EXPLOSIVE POWDER. HNS-IV (2,2′, 4,4′, 6,6′ – Hexanitrostilbene) is a well characterized energetic material that has been the explosive of choice for Exploding Foil Initiators (EFI), also called a slapper detonators, for several decades. HNS is the material of choice for a number of reasons.

What’s the difference between HNS II and HNS-IV?

The main difference between the HNS-IV explosive that can be initiated be an EFI and the HNS-II that can not is the much smaller crystal size of the HNS-IV. Since a complete particle size distribution measurement is difficult to obtain, a surface area analysis is usually performed.

Which is an explosives class has no blast hazard?

Division 1.2 Explosives which have a projection hazard but not a mass explosion hazard. Division 1.3 Explosives which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard. Division 1.4 Explosives which present no significant blast hazard.

How are explosives classified in the UN system?

The UN system consists of nine classes of dangerous materials, with explosives designated as Class 1. The explosives hazard class is further subdivided into six divisions, which are used for segregating ammunition and explosives on the basis of similarity of characteristics, properties, and accident effects potential.

Which is an example of a mass explosion hazard?

Division 1.5 Very insensitive explosives with a mass explosion hazard Division 1.6 Extremely insensitive articles which do not have a mass explosion hazard Division 4.1 Flammable solids, self-reactive substances and solid desensitized explosives Division 4.3 Substances which in contact with water emit flammable gases