Discussion on Vegetable Oil as the Capacitor Impregnant;

The viscosity of tantalum impregnant,which was researched by ourselves,was analysised in a cer- tain temperature range(295～328K)by NDJ—7 rotary viscometer.

Proceeding from introducing the characteristics and properties of phenol resin and Furan resin used as graphitematerial impregnant, this article analyzes the necessity and former achievement as well as existing problem of using Teflon as graphitematerial impregnant, promotes the possibility of solving above problems by experiments meantime achieves new process methodsuccessfully.

The verification and analysis of test methods for the determination of bond strength of the impregnating agents with the twisted coil;

This paper studies the effect of the preparation processes and break ways on the bond strength of the impregnating agents with the twisted coil during the verification of IEC 61033 in order to establish our corresponding national standard.

Effect of impregnation solvents on the catalytic properties of Rh-Mn-Li/SiO2 catalyst was investigated by means of the following techniques: CO hydrogenation reaction,temperature-programmed desorption of absorbed CO(CO-TPD),temperature-programmed surface reaction(TPSR) and X-ray photoelectron spectroscopy(XPS).

The regression design method was used to optimize the recipe of RFL solution for polyester cord.

Using the purified tar as raw material, high performance impregnating pitch with low QI content was prepared.

The progress in research and development in producing impregnating pitch is introduced in this paper,and several new techniques for production of impregnating pitch are presented with emphasis on the characteristics of these technologies.