Characteristic and Application of Boron Type Delay Charge

The proper and conventional formulation of boron type delay charge was gained, based on analyzing the mechanism of delay charge and by means of DSC and TG. The new manufacturing process of wet mixing powder was used, and the structure design of delay collar was optimized. The delay time of the delay blasting cap has been measured after ordinary and low temperature test, high temperature and high humidity test, and natural storage test. Result and appliance effect showed that the delay blasting cap has many virtues, such as the high accuracy of delay time, little amount of charge, long term of storage, and the high and low temperature resistance.