Producy name:Organic polysilazane IOTA 9108
Alias: Potteryable
precursor polymer
Product Features
Low viscosity
Short curing time
Various curing methods
High temperature resistance to 1500℃
High ceramic yield
Good adhesion on the metal
ceramic graphite materials
Easy to prepare SiCN
ceramics
Product description
Organopolysilazane IOTA
9108 is a liquid precursor polymer consisting of repeating Si-N units. It can
be used as a thermosetting resin and a ceramic precurs. Under relatively mild
conditions, the SiCN ceramic products with excellent temperature resistance are
obtained, especially for high temperature resistant adhesives.
Applications
Ceramic matrix composites
(CMCs)
Metal matrix composites
High temperature resistance to 1500℃
High temperature resistant
adhesive
Anticorrosive coating
High temperature resistant
anti-oxidation ceramic coating
Ceramic preform impregnated
Thermosetting resin
Organic and inorganic
hybrid materials
Packaging
Upon customer demand, it is
packed in 0.5-20 liters in plastic drum, solid content is more than 99%.
Technical Parameters
Apparent features: colorless to light yellow liquid
Solid content %: >99%
Viscosity:10-30 cp
Molecular weight (Mn): 700-900
Ceramic density：1.60-2.00 g/cm-3
Cured ceramic production
(800 oC)：>75%
VOC (%)： N/A
Ceramic yie(800 oC)： >55%
Solvent
Polysilazane IOTA 9118 can
be diluted with various polar or non-polar dry solvents. It is sensitive to
water, alcohol solvents, hydrolysis or alcoholysis reaction, to make the
product deteriorate. And it should avoid contact with acid, alkali and other proton
type substances.
Curing conditions
IOTA 9108 can be
cross-linked under the temperature of 120-180 ° C, curing can be done in air or
inert atmosphere.
IOTA 9108 can also do
hydrosilylation reaction by platinum catalyst , curing at 80-100 ℃.
The curing time depends on
the curing temperature and the amount of catalyst, usually 2-5 h.
Cracking conditions
First, IOTA 9108 cured
product converted to amorphous ceramics by high temperature cracking,
eventually get crystalline ceramics. It is amorphous product below 1400 ℃, begin to crystallize above 1400 ℃. Ceramic product composition has great
relationship with cracking atmosphere, SiC and Si3N4 under nitrogen or argon;
mainly Si3N4 under Ammonia; mainly SiOCN under air conditions. In addition, the
cured product cracking is easily influenced by filler, and result affects the
composition of the final ceramic product.
Shelf life
Shelf life of unopened
polysilazane IOTA 9108 is half year; opened polysilazane shelf life is depend
on protection measures. Under sealed low temperature drying condition, the
lifetime is more than two months.
Precautions
When use polysilazane, it
should be in a ventilated, dry environment and with the necessary protective
measures such as gloves, masks, goggles; We shouldn’t put the uncured
IOTA 9108 near fire, humid air and water.
Clean
Proper cleaning method is
important. After use, take acetone or solvent oil immediately to wipe the tool
and clean. Once IOTA 9108 cured, the solvent cannot be washed away.
