Epoxy resin undercoat, with high temperature and humidity resistance, for resistor was prepared by curing of acid anhydride and accelerating of glycol with proper nano-SiO/sub 2/ added at 80/spl deg/C. The properties of undercoat prepared were characterized by electrical tests, infrared spectra (IR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The results showed more compact and steady inter-crosslinked network structure was formed in the modified epoxy resins undercoat with nano-SiO/sub 2/ added, which leaded to the performance of modified epoxy resin undercoat improved greatly. The undercoat with nano-SiO/sub 2/ 2.68wt%, kept for six months at room temperature without flocculating and aggregating, is of good stability. The varying ratio of resistance with such undercoat painted is less than 1% after high temperature and humidity resistance test. In this work, an attempt has been made to prepare undercoat, with high temperature and humidity resistance, for resistor by modifying epoxy resin using nano-SiO/sub 2/.
[1]
J. Celis,et al.
Nanostructured Materials and Complex Metallic Materials: a nano- to macro-force scale investigation
,
2007
.
[2]
N Cetc,et al.
Application of Pouring Technology to Electronic Production
,
2003
.
[3]
Fu Zhonglin.
Progress in epoxy resins for electronic plastic packaging material
,
2003
.
[4]
Ying‐Ling Liu,et al.
Epoxy resins possessing flame retardant elements from silicon incorporated epoxy compounds cured with phosphorus or nitrogen containing curing agents
,
2002
.
[5]
M. Alagar,et al.
Synthesis and characterization of siliconized epoxy-1,3-bis(maleimido)benzene intercrosslinked matrix materials
,
2002
.
[6]
Yang Yu.
Emulsion Polymerization of Styrene and Butyl Acrylate in the Presence of Inorganic SiO_2 Nanoparticles
,
2002
.
[7]
Marlene Katz,et al.
Organic Chemistry, 2nd Edition (Bruice, Paula Y.)
,
1998
.