The synthetic method of antihalation dye tetrapotassium salt of 4-bis-(l-p-sulfophenyl-3-carboxy-pyrazole-5-one)-trimethin-oxonol is presented here in detail.

The corona protective materials and design of VPI electric machines;

Using Genetic algorithms to optimize corona protection structure,it can be quantitatively confirmed which crucial factor may influence the structure by the selection of material SiC and test of high resistance corona protective material.

Study on three gorge project hydrogenerator corona protection material and structure;

Through the selection and development for the internal corona protection materials ,the corona protection tapes with different resistivity and nonlinear coefficient have been optimized and matched reasonably in this subject .

Three kinds of antihalation dye were prepared for green-sensitive X-ray film,of which the absorbency ranges from 515nm to 550nm wavelength.