5. 03. Silica Aerogel Paste- General properties
General Physical Properties
Particle Size 10-200um
Solid Content 10~20%
Density 1g/mL
pH 6~12
Viscosity 200~900 cp
Max. Use. Temp 700 oC
Surface Chemistry Hydrophobic
The silica aerogel paste AFH series for fiber/blanket application is a sole
technology developed by Tec with high end silica aerogel insulation material
retaining water repellant(hydrophobic), fire proof and thermal insulation
performance. This ready to use product can be applied with fiber/blanket to
manufacture high end aerogel-fiber composites.
The AFH series can be applied depending on the customer’s taste for various
application. It can be coated on the surface of fiber/blanket to manufacture
sandwich panel, impregnate partially or completely to manufacture partially or
fully hydrophobic fiber/blanket with significant upgrade in thermal insulation
performance( lower value of thermal conductivity TC).
9. 05. Application Reference– Pipe case/cover
Structure of pipe case/cover
Paste
Glass fiber
Glass fiber
<Structure of paste and fiber after dry>
Manufacturing process of pipe case/cover
10. <Paste-fiber before dry> <During applying> <After applying>
05. Application Reference– Wet Blanket & Dry Blanket
Paste impregnated fiber composite
<Micro structure><Paste-fiber composite>
<Concept of paste impregnation in fiber>
<Application of paste-fiber composite for pipe >
<Paste-fiber composite applied at complicate structure>
11. 05. Application Reference– Molded to various shapes
에어로겔 부직포 건조후에어로겔 부직포 건조전 에어로겔 부직포 건조후 단면
Applying on straight pipe
Applying at twisted pipe
건조 후 성형 사진건조 전 부직포 성형사진 건조 후 성형사진
Molding of aerogel
blanket
Before dry After dry
Surface after linear cut
Molding and Before dry
After dry
Molding and after dried Molding and after dried
Inner surface after dried
12. 05. Application Reference– Blanket subsequent processing
<Linear cut of molded blanket>
By combining silica aerogel and glass fiber, depending
upon the degree of impregnation physical features like
flexibility, strength, molding and chemical feature like
hydrophobic nature can be controlled. Different types
of fiber/ blankets can be selected for manufacturing
products according to the range of applying
temperature and nature of application site.
<Surface treatment of aerogel blanket>
After molding and processing, product's surface
treatment can be done depending upon the
application requirement such as aluminum casing or
taping the surface as shown in the picture. In case of
no special surface treatment required, due to physical‐
chemical properties of the product the basic features
such as water repellant, anti‐corrosion, strength can
be achieved.
Easy installation and excellent molding product.
Excellent insulation performance, water repellant
performance makes it better than glass fiber in terms
of water absorption. Non‐dusty product, safe to
human compared to other glass fiber products.
<Molded Aerogel blanket>
13. 06. Performance Test – Thermal conductivity
•The thermal conductivity of the paste was determined by
impregnating the paste in the fiber in the size of 200*200*4 mm.
It was tested according to KS L 9016 test method.
200 300 400 500
20
30
40
50
60
70
80
90
100
110
120
130
140
ThermalConductivity(mW/m.K)
Temperature(
o
C)
<Thermal conductivity graph at high temperature>
TEC Paste- carbon fiber composite
<Thermal conductivity test report>
Aerogel Paste-glass fiber
composite
Aerogel Paste-carbon fiber
composite
15. 06. Performance Test – Water/moisture repellant ( Hydrophobic)
Water droplets on the aerogel paste
applied fiber surface after dried
Normal glass fiber and aerogel impregnated glass fiber
test result
Result: As shown in figure, the aerogel impregnated glass fiber shows excellent water
repellant performance
0 hour 1 hour 6 hour
Glass fiber 0.89 3.97 4.7
Aerogel-paste
glass fiber
2.07 2.13 2.15
Water absorption taste after dipping in
water with time (g)
16. 06. Performance Test – High temperature resistant
<High temp. resistant test>
<Glass fiber 6mm> <Aerogel paste-glass fiber 6mm>
<After 60 Seconds>
<Glass fiber>
< Aerogel paste-glass fiber >
Result: Glass fiber melted with 5 seconds but aerogel –glass fiber composite showed no change in surface for more than 1 minute.
17. 06. Performance Test – Condensation test
<While test> <After 24 hours of test>
<Condensation test for Aerogel paste-fiber composite>
The picture shows the condensation condition of aerogel‐
fiber composite after 24 hours condensed continuously
at ‐14.6 degree Celsius. The steel surface without being
covered by aerogel fiber composite has condensed below
zero and ice is formed on the surface whereas the
aerogel‐fiber composite surface is not affected at all. This
result is obtained due to the thermal insulation
performance as well as excellent hydrophobic
performance of the surface of aerogel‐fiber composite.
This combined feature makes it applicable at lower
temperatures also.
18. 1 2 3 4 5 6 7 8 9 10
keV
0
2
4
6
8
10
12
cps/eV
C O Ca
Ca
Cl
Cl
SiNa
Mg
Al K
K
07. Non-Hazard
Silica exists in nature in various form of quartz which is not harmful to humans
Non‐dusty, non‐flammable, no smell, even safe at high temperature.
Average particle size ranges from 70~100um safe even in inhalation.
Inorganic material no carcinogenic substance is produced.
Eco‐friendly and safe
