BJB Enterprises TC-5040-AB
- Chemical Family
- Silicones
BJB Enterprises TC-5040-AB is a room temperature, addition/platinum curing silicone rubber designed for mold making, encapsulation applications, pressure pads, gaskets, and various other types of parts. When this rubber is used to make certain types of molds, it is translucent enough to see through when casting into the mold cavity.
Properties
- Physical Form
- Liquid
Product families
Applications
- Industrial — Other Industrial Applications
- Other Industrial Applications
- Tooling & Moldmaking
Product Families
- Silicone Elastomers
Other characteristics
- End Uses
- Gaskets, Mold Making
- Features
- Translucent
- Polymer Name
- Silicone Elastomer
- Tear Strength
- 16.625 - 16.625 kN/m
- Processing Methods
- Casting
- Markets
- Industrial
- Storage
Store ambient temperatures, 65-80°F (18-27°C). Unopened containers will have a shelf lifeof 12months from date of shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
- Appearance
- Translucent
- Cure
- Air Dry
- Technology
- Elastomers
- Packaging Type
- Drums
- Safty Precaution
Use in a well-ventilated area. Avoid contact with skin using protective gloves and protective clothing. Repeated or prolonged contact on the skin maycause an allergic reaction.Eye protection is extremely important. Always use approved safety glasses or goggles when handling this product.
- Application
Certain materials will cause inhibition or neutralization of the curing agent. These materials are sulfur and organometallic salt containing compounds such as organic rubbers and condensation cured RTV silicone rubbers. Inhibition may easily be determined by brushing a small quantity of TC-5040 A/B over a localized area of the surfaceto be reproduced. If the TC-5040 A/B is gummy or uncured after the curing time, then you know the mold surface is acting as an inhibitor. Molds made from wood, plaster, metal or plastic should not cause inhibition if they are clean. To insure against possible problems, it is advisable to seal the surface with RF-5215 or other appropriate sealer. Contact BJB's technical sales for additional information.
- Material Features
- Translucent
- Plastics and Elastomers End Uses
- Gaskets
- Mold Making
- Plastics and Elastomers Processing Methods
- Casting
Technical data
Table 1 of 2
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Hardness | 35 - 45 | Shore A | ASTM D2240 |
| Density | 1.09 | g/cc | ASTM D792 |
| Cubic | 25.7 | Inches per Pound | — |
| Tensile Strength | 865 | psi | ASTM D412 |
| Elongation | 540 | % | ASTM D412 |
| Tear Strength | 95 | pli | ASTM D624 Die B |
| Shrinkage Linear | Nil | in/in | ASTM D2566 (1” depth) |
| Coefficient of Thermal Expansion | TBD | in/in/°F | ASTM831 |
Table 2 of 2
14 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Mix Ratio by weight (Part A) | 100 | — | — |
| Mix Ratio by volume (Part A) | 100 | — | — |
| Specific Gravity (77°F (25°C), Part A) | 1.09 | — | — |
| Color (Part A) | Colorless | — | — |
| Viscosity (77°F (25°C), Part A) | 125000 | — | Brookfield |
| Mixed Viscosity (77°F (25°C)) | 65000 | cps | Brookfield |
| Work Time (100g mass, 77°F (25°C)) | 40 - 45 minutes | — | — |
| Gel Time | 60 - 65 minutes | — | — |
| Demold Time (77°F (25°C)) | 16 - 24 hours | — | — |
| Mix Ratio by weight (Part B) | 10 | — | — |
| Mix Ratio by volume (Part B) | 11 | — | — |
| Specific Gravity (77°F (25°C), Part B) | 0.99 | — | — |
