Precipitated Silica for Industrial Rubber Applications
PPG introduced precipitated silica as an alternative reinforcing filler for carbon
black in tires in the 1930s. Since that time, the development of our reinforcing
silica products has been inextricably bound to on-going advancements in global rubber
compounding and manufacturing.
Today, we produce reinforcing synthetic amorphous precipitated silica products in
powder, pellet, granular and micro-granular form for use in rubber manufacturing.
Formulated in a variety of particle sizes and surface areas, these highly specialized
products are engineered to increase the strength and durability of rubber for countless
applications ranging from engine mounts, belts and hoses in automobiles, to wire and
cable coatings, conveyor belts, printer rolls, syringe toppers, gaskets, seals, roofing
systems, rubber gym floors and more.
PPG AGILON®, HI-SIL® and SILENE™ Silica Products
We offer a full a range of industry-leading silica products. Together, they are
designed to provide manufacturers with optimized processing characteristics – such
as faster cure rates, easier mixing, better flow, or more flexible extrusion and color
compounding capabilities – while imparting specific properties to finished
high-performance rubber products, including:
- Increased stiffness and reinforcing strength
- Enhanced resistance to heat build-up and abrasion
- Better tear and tensile strength
- Improved color retention and/or translucence
- Superior chip and chunk resistance
Recommended Products and Typical Properties for Industrial Rubber
Applications
Silica Product |
N2
(BET-5)Surface
Area(m2/g)
|
pH |
Residual Salt Type |
Physical Form |
Reinforcement |
Silene 732D
|
33 |
8.5 |
Na2SO4 |
Powder |
Semi-Reinforcing |
Hi-Sil 532EP
|
55 |
8 |
Na2SO4 |
Powder |
Semi-Reinforcing |
Hi-Sil 315-D
|
125 |
7 |
Na2SO4 |
Powder |
Reinforcing |
Hi-Sil
315G-D |
125 |
7 |
Na2SO4 |
Granule |
Reinforcing |
Hi-Sil
210 |
135 |
7 |
NaCl |
Pellet |
Reinforcing |
Hi-Sil
233 |
135 |
7 |
NaCl |
Powder |
Reinforcing |
Hi-Sil 243LD
|
135 |
7 |
NaCl |
Granule |
Reinforcing |
Hi-Sil 900
|
135 |
7 |
Na2SO4 |
Powder |
Reinforcing |
Hi-Sil
135 |
150 |
7 |
Na2SO4 |
Powder |
Highly-Reinforcing |
Hi-Sil
EZ160G |
160 |
7 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Hi-Sil
EZ160G-D |
160 |
7 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Hi-Sil
HDP-320G |
160 |
7 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Hi-Sil 134G
|
180 |
7 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Hi-Sil 190G
|
195 |
6.5 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Hi-Sil
915 |
195 |
7 |
Low Na2SO4 |
Powder |
Highly-Reinforcing |
Hi-Sil
EZ200G |
300 |
7 |
Na2SO4 |
Granule |
Highly-Reinforcing |
Agilon Performance Silica Products
Agilon performance silica is a patented material that is engineered to enhance the
benefits of traditional precipitated silica by managing heat build-up and improving tensile
strength while lowering viscosity at processing temperature.
Based on a proprietary technology platform developed by PPG,
Agilon performance
silica also helps the rubber industry address the productivity and environmental challenges
associated with
in-situ silica/silane mixing. By enabling a simpler, more
efficient mixing process, this revolutionary material reduces manufacturing complexity and
capital investment by:
- Allowing the use of older mixing technologies
- Increasing mixing throughput
- Reducing energy consumption
- Eliminating almost all alcohol-related VOC emissions resulting from conventional
silica/silane mixing
Additional benefits of
Agilon performance silica include:
- Elimination of porosity-related extrusion inefficiencies
- Extended shelf life for uncured rubber
- Improved coupling in natural rubber applications
- Lower temperature mixing to avoid natural rubber degradation
Agilon Performance Silica
Product |
Dispers-ibility |
Reinforcing
Capability
|
CTAB
Surface
Area
(m2/g)
|
N2
(BET-5)
Surface
Area
(m2/g)
|
SH,
Weight %
|
Carbon,
Weight %
|
pH |
Residual
Salt
Type
|
Physical
Form
|
Agilon 400G |
High |
High |
130 |
75 |
0.5 |
4.0 |
6.8 |
Na2SO4 |
Granule |
Agilon 454G |
High |
High |
200 |
140 |
0.5 |
4.0 |
6.8 |
Na2SO4 |
Granule |
Agilon 458G |
High |
High |
200 |
115 |
0.5 |
6.0 |
6.8 |
Na2SO4 |
Granule
|
Silene is a trademark and
Agilon and
Hi-Sil are
registered trademarks of PPG Industries Ohio, Inc.