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SILICA ADDITIVES
Nyacol Nano Technologies' Performance Materials
include nano-sized inorganic oxides used as additives
in film, fiber, coatings and other applications.
We manufacture products in a range that enables
our customers to choose the material that best fits
their needs.
NYACOL® OFFERS SILICA ADDITIVES IN TWO CATEGORIES:
1. Amorphous Silica in Ethylene Glycol Sols - DP5480,
DP5540, DP5820
2. Amorphous Silica Powders - Nyasil™ 5, Nyasil™
20, Nyasil™ 6200
Nyacol's ethylene glycol (EG) silica sols were developed
to provide anti-block and abrasion resistance properties
to polyester film and tape. Our material allows
the processor to maintain transparency in products.
These additives are also used in deep-dyed polyester
fibers to provide receptor sites for the dyes, thereby
yielding a fiber with vivid colors.
The Nyasil silica powders may be compounded into
a PET chip. To prevent degradation of the resin,
the PET should be dried before melt processing.
A twin screw extruder is the preferred means of
incorporating these additives into the chip in order
to achieve optimal dispersion of the product.
Table 1A Silica - Typical Values
|
(N/A - NOT
APPLICABLE)
|
| PRODUCT |
METAL
OXIDE
|
WT. %
METAL OXIDE
|
MEDIA
|
% H2O(Karl
Fischer)
|
SPECIFIC
GRAVITY
*SG of SiO2
|
pH
*50/50 wt. in water+5 wt.% in aqueous slurry
|
MEAN PARTICLE
DIAMETER
|
PARTICLE
CHARGE
|
|
nm
|
µm
|
| DP5480 |
Silica
|
30
|
EG
|
1.0
|
1.3
|
3.0*
|
50
|
|
Negative
|
| DP5540 |
Silica
|
30
|
EG
|
1.0
|
1.3
|
3.0*
|
100
|
|
Negative
|
| DP5820 |
Silica
|
30
|
EG
|
1.0
|
1.3
|
3.0*
|
20
|
|
Negative
|
| Nyasil 5 |
Silica
|
92
|
Powder
|
N/A
|
2.2*
|
4.0+
|
|
1.8
|
N/A
|
| Nyasil 20 |
Silica
|
95
|
Powder
|
N/A
|
2.2*
|
4.0+
|
|
1.4
|
N/A
|
| Nyasil 6200 |
Silica
|
96
|
Powder
|
N/A
|
2.2*
|
4.0+
|
|
1.7
|
N/A
|
Table 1B Silica - Typical Values
|
PRODUCT
|
BULK DENSITY
g/cc (lb/ft3)
|
OIL ABSORP-TION
ASTM D1483-84
|
% LOSS
ON IGNITIO
(loss after 2 hrs.,1000°C)
|
% FREE
MOISTURE
(loss after 2 hrs.,
105°C)
|
VISCO-SITY
|
APPEARANCE
|
|
Untamped
|
Tamped
|
|
DP5480
|
N/A
|
N/A |
N/A
|
N/A
|
N/A
|
60 cP
|
Clear Liquid
|
|
DP5540
|
N/A
|
N/A |
N/A
|
N/A
|
N/A
|
60 cP
|
Clear Liquid
|
|
DP5820
|
N/A
|
N/A |
N/A
|
N/A
|
N/A
|
85 cP
|
Clear Liquid
|
|
Nyasil 5
|
0.15
(9.36)
|
0.18
(11.23) |
140g of Oil
/ 100g of Powder
|
8
|
2.5
|
N/A
|
White Powder
|
|
Nyasil 20
|
0.29
(18.10)
|
0.32
(20.00) |
80g of Oil
/ 100g of Powder
|
5
|
1.0
|
N/A
|
White Powder
|
|
Nyasil 6200
|
0.29
(18.10)
|
0.31
(19.35) |
77g of Oil
/ 100g of Powder
|
4
|
0.7
|
N/A
|
White Powder
|
Table 2 Nyasil Silica Powders
- Typical Analysis
|
|
|
PARTICLE
SIZE
MALVERN MASTERSIZER S
|
|
|
BET ANALYSIS
|
|
|
PRODUCT
|
D(v, 0.1)
|
D(v,0.5)
|
D(v,0.9)
|
Surface Area
m2/g
|
Total Pore
Vol.
ml/g
|
Avg. Pore
Radius
Ĺ
|
|
Nyasil 5
|
0.7
|
1.8
|
3.2
|
279
|
0.29
|
20.5
|
|
Nyasil 20
|
0.5
|
1.4
|
2.7
|
167
|
0.33
|
39.1
|
|
Nyasil 6200
|
0.6
|
1.7
|
3.8
|
64
|
0.24
|
74.4
|
|
|
IMPURITY
ANALYSIS ppm
|
|
COLOR
ANALYSIS
|
|
|
PRODUCT
|
Sodium as
Na
|
Iron as Fe
|
Aluminum
as Al
|
L
|
a
|
b
|
|
Nyasil 5
|
< 1000
|
46
|
178
|
93.1
|
-0.41
|
0.36
|
|
Nyasil 20
|
< 1000
|
37
|
60
|
93.5
|
-0.38
|
0.27
|
|
Nyasil 6200
|
< 1000
|
23
|
33
|
93.4
|
-0.38
|
0.33
|
Table 3 Silica Applications
| PRODUCT |
ABRASION
RESISTANCE
|
ANTI-BLOCK
|
DEEP-DYED
FIBER
|
COATINGS
|
| DP5480 |
|
|
|
|
| DP5540 |
|
|
|
|
| DP5820 |
|
|
|
|
| Nyasil 5 |
|
|
|
|
| Nyasil 20 |
|
|
|
|
| Nyasil 6200 |
|
|
|
|
For additional information or to place an
order, contact:
Nyacol Nano Technologies Inc.
P.O. Box 349
Megunko Road
Ashland, MA 01721
| Toll Free: |
|
800-GET-SOLS (438-7657) |
| Telephone: |
|
508-881-2220 |
| Fax: |
|
508-881-1855 |
Information
herein is accurate to the best of our knowledge.
Suggestions are made without warranty or guarantee
of results. Before using, user should determine
the suitability of the product for his intended
use and user assumes the risk and liability in connection
therewith. We do not suggest violation of any existing
patents or give permission to practice any patented
invention without a license. 9/98
|
; 