Method for testing mass fraction of paraffin in explosive charge by using low-field nuclear magnetism technology

The invention provides a method for testing the mass fraction of paraffin in explosive loading through a low-field nuclear magnetic technology. The method comprises the steps that 1, a paraffin T2 relaxation peak integral area-mass fraction standard curve is drawn; 2, a paraffin T2 signal in a press-fitting explosive sample is collected, and the mass fraction of the paraffin is obtained. The result of measuring the paraffin mass fraction coefficient in the press-fitting explosive by adopting the low-field nuclear magnetic resonance method is accurate. The testing method provided by the invention adopts a nuclear magnetic resonance technology, is a nondestructive testing method with very low pretreatment degree, and is non-destructive to a sample. The test method provided by the invention has the advantages of high determination speed, high precision and good reproducibility. In the test method, the size, appearance color and other conditions of the to-be-tested sample have no interference on the determination