1. What is Nanotechnology
Nanotechnology is the exploitation of the ability to control matter at dimensions between 0.1 and 100 nm, resulting in unique functionalities
Scale of Things
0.1 nm
0.01 mm
10 nm
0.1 mm
100 nm
10 mm
100 mm
1 cm
10-2 m
10-3 m
10-4 m
10-5 m
10-6 m
10-7 m
10-8 m
10-9 m
10-10 m
1 nanometer (nm)
1,000 nanometers =
1,000,000 nanometers =
1 millimeter (mm)
1 micrometer (mm)
DNA
~2-1/2 nm diameter
Ant
~ 5 mm
Red blood cells
(~7-8 mm)
Human hair
~ mm wide
ATP synthase
~10 nm diameter
Dust mite
200 mm
Atoms of silicon
spacing nm
Fly ash
~ mm

2. Organic-Inorganic Nanocomposite Materials
Properties of Organic & Inorganic Material
Two Influencing Factors
1.The interface between the organic
& inorganic phase
2.Domain sizes of these two phases

3. Sol-Gel Technology
The main idea of the sol-gel process is the spontaneous formation of a dual phase material (gel), prepared from the solution (sol), containing inorganic precursors (前驅物) and stabilizing agents with hydrolysis(水解) & condensation(縮合) reaction. Further transformation of the gel phase is driven by the evaporation of the solvent, and the subsequent formation of the xerogel phase.(熟化aging). Drying of the xerogel completely removes solvent molecules, leading to further aggregation of inorganic clusters and the formation of solid materials.
Hydrolysis Reaction
Condensation Reaction

4. Sol-Gel Technology (cont’d)
Control Parameters
Precursors
Concentration of Metal Salts
Temperature
Catalysts pH
Advantages
Low temperature route (below 200oC)
Uniform particle size distribution
Provides good homogeneity
Concentration of metals in the coatings can be controlled with ease
Chemical purity of nanocomposites
Drawbacks
high cost for the majority of alkoxide precursors
long processing times
Hydrolysis & Condensation

5. Applications
Anti-Abrasion
Hydrophobic
Anti-Glare
Anti-Rusting

6. Nano Hybrid Material
PEACCO NON-CHROMATE PLASTICAL/ METAL SURFACE TREATMENT SOLUTIONS
Nanocomposites
The hybrid from inorganic nano-dispersion metal and organic epoxy .
Sol-Gel Method
uses an aqueous solution to apply on the metal to form a organic-inorganic hybrid thin film.
Traditional Coating Method
This coating can be applied on the metal by many techniques like dip, spin, spray, or roller coatings.
Strong chemical bonding
This organic-inorganic hybrid coating can chemically bond to the metal and can also chemically bond to organic adhesives/paints.
Apply on Various Metals and Plastics
By modifying the composition of the coating solution, this technology can apply on different kinds of metals and plastics.
Strong chemical bonding