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  • Organic polysilazane IOTA 9118

    Alias:  Potteryable precursor polymer

    Product Features:

    Low viscosity

    Short curing time

    Various curing methods

    High ceramic yield

    Good adhesion on the metal ceramic graphite materials

    Easy to prepare SiCN ceramics

    High temperature resistance to 1500 ℃

    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 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 is100%.

    Technical Parameters:

    Apparent features:                         colorless to light yellow liquid

    Solid content %:                              100%

    Molecular weight (Mn):                   900-1100

    Viscosity:                                         50-80 cp

    VOC (%):                                       N/A

    Ceramic yie(800 ℃):                        >60%

    Cured ceramic production (800 ℃):   >80%

    Ceramic density:                              1.60-2.00 g/cm-3 

    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 9118 can be cross-linked under the temperature of 120-180 ° C, curing can be done in air or inert atmosphere.

    IOTA 9118 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 9118 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 9118 is one year; opened polysilazane shelf life is depend on protection measures. Under sealed low temperature drying condition, the lifetime is more than two months.

    Clean:

    Proper cleaning method is important. After use, quickly use acetone or solvent oil to wipe the tool for cleaning. IOTA 9118 Once cured, the solvent cannot be washed away.

    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.



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