| CAS No.: | 70131-67-8 |
|---|---|
| Formula: | Si |
| EINECS: | 00000000 |
| Status: | Liquid Catalyst |
| Response Type: | Polymerization |
| Classification: | Homogeneous Catalysts |
| Samples: |
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| Customization: |
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Audited Supplier Hydroxyl Silicone Oil/OH polymer
Chemical Name: Hydroxy Terminated Polydimethylsiloxane
Synonyms:
1. Hydroxy terminated polysiloxane
2. Hydroxy terminated PDMS
3. OH polymer
4. Hydroxy silicone oil
CAS NO.: 70131-67-8
Description
OH polymer, hydroxypolysiloxanes is a hydroxyl terminated polydimethylsiloxane. It is a series of functional polymers with different viscosities and different contents of terminal hydroxyl groups. Low-viscosity polymers can be used for filler surface treatment and anti-structuring additives for high-temperature adhesives, and can also be used in room-temperature adhesive formulations. Low-viscosity hydroxy silicone oils can also be used as reactive diluents to adjust the overall viscosity of the formulation.
| Item | Index |
| Appearance: | Colorless clear liquid or polymer |
| Viscosity ( 25ºC,MPas): | 30-100cst,500-5000cst,20000,50000,80000,100000cst etc. |
| Hydroxyl content (%) | 0.5 - 3,depends on the viscosity. |
| Volatile(%) | Lower than 1 |
1.Used for insulation, shockproof, moisture-proof and corrosion prevention of electronic components and semiconductors.
2.Used in mechanical lubrication.
3.Can be used for vehicle maintenance.
4.Used in plastics, printing, construction and other industries.
5.Used in the production of silicone sealant.
USAGE and DOSAGE
Usually with the curing agent to achieve the crosslinking, it must be fixed by means of a coupling agent for the release paper, generally the curing agent is about 3 to 5% of gum base, the coupling agent is about 0.5 to 1 % of gum base.
In most cases the solvent was diluted with 10 times the first gum base, then add the coupling agent and the curing agent after mixing uniformly coated on the substrate surface at room temperature or heat curing. It need over 30 minutes at room temperature, and 30 seconds for 120 ~ 150 o C. there is no need any solvents for sealants and molds for rubber, add the curing agent and stir ( one-component and two-component curing agent is used is not the same ) , after 30 to 120 minutes degassing it can be cured .
Note
Hydroxy silicone oil can not be mixed with high temperature water vapor, acid/alkali substances, alkoxysilanes, otherwise there is a tendency curing and viscosity changes..
Packing:
Cyclopentasiloxane is available in 5kg plastic drums, 25kg plastic drums, 25kg Iron drums or200kg Iron drums.
Storage:
1.The product should be stored in a shady, dry place with the temperature 0°C-40°C, freezing should be avoided.
2. Avoid from acid, alkali chemical materials and other impurities.
3. Handle as non-hazardous substance.
4. Shelf life: 1 year.
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