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【答案】应助回帖
chrispaul(金币+1, 博学EPI+1): 不是很好，一般 2011-05-31 14:46:24
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In order to increase the stability of nano-silver,to Reduce the aggregation of nano-silver,to improve the affinity of Nano-silver and organic materials .It is required for surface modification of nano-silver.Using silane coupling agent KH-560 modified nano silver surface to prepare the modified silver conductive adhesive as a filler, the modified silver conductive adhesive as a filler.Amount of nano silver and silver paste the relationship between conductivity and the help of TEM, IR, UV-visible spectrophotometer, such as testing methods to characterize the modified Hou Nami silver. The results showed that after surface modification of nano silver, has a good affinity and dispersion stability. KH-560 modified mechanism is a small amount of ethanol in the hydrolysis of silicon-alcohol solution to produce Si-OH groups, these hydroxyl groups and the Ag particles on the surface of a small amount of hydroxyl dehydration reaction of the Si-O-Ag bond . The best guide nano-silver paste curing time for 15 min. The viscosity of slurry with nano-silver content increases. Nano-silver content of 55% of the volume resistivity in the smallest value of 2.5 × 10-3Ω • cm. |
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