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  • Organic Polysilazane IOTA 9283

    Organic Polysilazane IOTA 9283


    Description

    IOTA 9283 is a liquid polysilazane with Si-N structural, mainly function group is Me and modified fluorine groups. It is developed for room temperature cured hydrophobic coating systems. The product has a unique Si-NH-Si bond, can be cured at room temperature, curing mainly involved in the reaction of Si-NH-Si hydrolysis and oxidation. While the Si-NH-Si bond and the substrate surface-OH easily react, and bring the good adhesion to substrate. Add appropriate catalyst in the resin can promote Si-H and Si-NH-Si reaction, after curing resin can generate three-dimensional cross-linked structure, giving the material good mechanical properties.

    IOTA 9283 has excellent hydrophobic property as contain fluorine group, keep the colorless transparent coating with good transmittance more than 95%.

    IOTA 9283 has low viscosity and good adhesion, can be applied to various types of substrates by smearing, dipping, spraying, brushing and other methods, the main substrates are metals, alloys, glass, paint films and plastics (such as PP, PC, PVC, PMMA), etc.

    Product Features

    Low viscosity

    Excellent Hydrophobic coating

    Short surface dry time

    Various curing methods

    Non-flammable after curing

    Anti-oxidation, anti-corrosion

    Easy to clean

    Good adhesion on the metal ceramic graphite materials

    Applications

    Coatings

    Adhesives

    Non-flammable composites

    Polymer matrix composites

    Glass and Abrasives

    Applications with low surface tension and high hydrophobic

    Technical index

    Appearance: Colorless to light yellow transparent liquid

    Molecular weight (Mn): 900-1000

    Solid content: 10% (other contents could be customized)

    Liquid Density: 0.68g/cm3

    Viscosity: 2cp-5cp

    Cracking threshold: 100µm+(coating thickness)

    Curing conditions: cured in room temperature without catalyst

    Surface dry time in room temp.: 10min-15min

    Totally cured time:  a. more than 24hours in room temp.

                       b. Heating could promote the curing process, heat in 120℃-  150℃ for 2-5hours after surface dry.

    The hardness after cured:  Room temp. cured for 12hours:  4H

                             Room temp. cured for 24hours:  6H

    Hydrophobic angle: 110°-120°

    Recommended temperature of varnish coating: <300℃

    Recommended operating temperature with main coating: <1000℃

    Chemical masking: perform good with O2,H2O and other gas

    Linear shrinkage: <1%

    Transmittance (visible light): >95%

    Metal Adhesion (Cross-Hatch): 0 grade

    Shelf life: 12months in unopened condition


    Notes

    ①   Solid content of IOTA 9283 is 10%, could be customized as customers’ requirements.

    ②   The heating curing process of IOTA 9283 is operated after surface dried, curing temp. is 60℃-200℃. The totally cured time will be shorten as the temp. increasing.

    ③   The hydrophobic angle of cured IOTA 9283 coating is stable at 115°, it could keep around 109° after heating with 350℃ in 1hour.

    ④   The operating temp. of IOTA 9283 is related to the coating thickness, the higher thickness, the better protection, but the coating is easy to be crack in high. Temp.


    Compatibility

    The product could be miscible with most non-polar solvents, such as alkanes, ethers, ketones, esters. Insoluble in alcohol and ether solvents, such as diethylene glycol dimethyl ether, diethylene glycol dibutyl ether, tetraethyl ether Butyl glycol ether.

    It’s also miscible with a variety of resins, such as epoxy silicone resin, silicone resin, it will shorten the curing time and improve resin hardness when mixed with silicone resins.


    Operation methods

    Operating and storing in a dry, cool and well-ventilated environment, away from heat and fire sources, the recommended temperature is 0-20℃.

    The gloves, masks, etc. is necessary when taking the product.

    Uncured product should not be placed close to fire sources, humid air, or water.

    The container must be replace the air with nitrogen/argon and completely sealed in time after use.

    Unused product that has been formulated cannot be recycled and should be disposed of in accordance with local regulations.

    Products beyond the shelf life can be used only after the retesting complied.


    Package

    Packed in 100ml, 1L, 5L metal drums.

    Clean

    Proper cleaning methods are important. After use, quickly wipe down the tool with acetone or mineral spirits.

    Once IOTA-9283 is cured, ordinary solvents cannot be washed away. It can be treated with strong alkali such as sodium hydroxide 10% aqueous solution for more than 5 hours.


    Precautions

    The storage environment should be dry, cool and well ventilated, away from heat and fire sources. The packaging container must be kept tightly closed and handled with care. The storage temperature should be kept between 0°C and 20°C, and the storage period is 12 months.



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