Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
- Two-part, heat curable silicone disperson
- Cures via addition-cure chemistry
- 1:1 Mix Ratio (Part A: Part B)
Applications & Uses
- Markets
- Application Area
- Application Method
- Plastics & Elastomers End Uses
- Applications
- Suitable for dip casting and heat-curing of thin elastomeric films
- Low viscosity makes dispersions ideal for use as sprayable coatings
- Instructions for Use
Mixing
For two-part, platinum catalyzed dispersions, mixing Part A into Part B (instead of Part B into Part A) is important especially when using a dispersion with high solids content. Thoroughly stir individual components prior to addition to ensure homogeneity. Mix in a 1:1 ratio by weight. Do not use wooden spatulas to mix and avoid the use of latex gloves. Exercise care to prevent solvent loss during deairing. Accomplish additional dilution for thin film applications by adding appropriate solvent. Mixer design/size/type, blade/propeller type, shear/RPM levels, and heat generated during mixing, are important parameters and should be addressed in order to have an adequately mixed dispersion. Warning: Consult the MSDS for MED10-6600 prior to use, as its solvent carrier is hazardous.
Vacuum Deaeration
Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply full vacuum to a suitable container of at least four times the volume of material being de-aired. Hold vacuum until bulk deaeration is complete.
Substrate Considerations
Cures in contact with most materials common to biomedical assemblies. Exceptions include: sulfur-cured organic rubbers, latex, chlorinated rubbers, some RTV silicones and unreacted residues of some curing agents.
Coating and Use
Dispersions are more commonly used in dip molding processes, but can also be sprayed or cast. Make sure to apply under a fume hood or in a well ventilated environment. Care should be taken before placing coated mandrels or parts in oven due to the presence of solvent. Reference cure schedule for devolitilization times.
Properties
- Physical Form
- Appearance
- Translucent
- Typical Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Viscosity | 400 (400 ) | cP (Mpa*s) | — |
| Non Volat ile Content | 35.0 | % | — |
| Durometer Type A | 25.0 | — | — |
| Elongat ion | 750.0 | % | — |
| Mix Rat io | 0.042361111 | — | — |
| Refractive Index | 1.46 | — | — |
| Solvent | Xylene | — | — |
| Stress at Strain 300 % | 325 (2.24) | psi (MPa) | — |
| Tear | 145 (25.57 ) | ppi (kN/m) | — |
| Tensile | 1,200 (8.28 ) | psi (MPa) | — |
| Value | Units | Test Method / Conditions | |
| Cure System | Platinum | — | — |
| Cure at 25 °C | 30.0 | minutes | — |
| Cure at 75 °C | 40.0 | minutes | — |
| Cure at 150 °C | 135.0 | minutes | — |
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Storage and Handling
Most dispersions are stored prior to application. It is important to note that NuSil recommends keeping the dispersion in its original container when possible, tightly sealed and stored below 40º C. Care should be taken to prevent solvent evaporation and contamination during long or short term storage.