METHOD FOR PRODUCTION OF RADIO ABSORBING COMPOSITE MATERIAL Russian patent published in 1997 - IPC

FIELD: production of radio engineering composite materials. SUBSTANCE: method involves mixing of dielectric binder with dielectric conducting or non-conducting filler and/or magnetic fillers, their formation, applying on the surface to be protected followed by its hardening. Aqueous mixture of acryl amide with nitrate of metal, their molar ratio being (2:1)-(20:1), respectively. Mentioned above nitrate of metal is chosen of Cr(III), Ca(II), Bi(III), Mn(II), Ni(II), Zn(II), Er(III). Content of water is 5-20 mass %, hardening is carried out within 20-60 C at 0.1-2 h. Productivity of proposed method is increased 4-40 times. EFFECT: improved productivity. 1 tbl