BJB Enterprises TC-5045 AB
- Chemical Family
- Silicones
BJB Enterprises TC-5045 AB is a room temperature, addition/platinum curing silicone rubber designed for mold making, encapsulation applications, pressure pads, gaskets, and various types of parts. It is anexcellent mold material for casting rigid and flexible urethane systems. It may also be used as a mold making material for casting low melting metals in continuous operations to 650F (344°C) and sporadic applications of 850F (454°C). TC-5045-AB has proven to be less inhibited in its cure than standard platinum based silicones. It has a very favorable CTE for heat expandable mandrels used in composite tooling.
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
- Polymer Name
- Silicone Elastomer
- Tear Strength
- 16.8 - 16.8 kN/m
- Processing Methods
- Casting
- Markets
- Industrial
- Storage
Store ambient temperatures, 65-80°F (18-27°C). Unopened containers will have a shelf life of 12months from date of shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
- Appearance
- Opaque
- 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 may cause an allergic reaction.Eye protection is extremely important. Always use approved safety glasses or goggles when handling this product.
- Application
Although TC-5045 A/Bhas proven to be less inhibited in curing against most substrates some materials may cause inhibition or neutralization of the curing agent. Inhibition may easily be determined by brushing a small quantity of TC-5045 A/B over a localized area of the surface to be reproduced. If the TC-5045 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 spray a RF barrier film (BJB product RF-5215) over any questionable surfaces. This is the best way of treating clays and surfaces that cause inhibition.
- Plastics and Elastomers End Uses
- Gaskets
- Mold Making
- Plastics and Elastomers Processing Methods
- Casting
Technical data
Table 1 of 2
12 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Hardness | 40 - 50 | Shore A | ASTM D2240 |
| Density | 1.33 | g/cc | ASTM D792 |
| Cubic | 20.5 | Inches per Pound | — |
| Tensile Strength | 756 | psi | ASTM D412 |
| Elongation | 400 | % | ASTM D412 |
| Tear Strength | 96 | pli | ASTM D624 Die B |
| Shrinkage Linear | Nil | in/in | ASTM D2566 (1” depth) |
| Coefficient of Thermal Expansion | 14.64 x 10⁻⁵ | in/in/°F | ASTM831 |
| Dielectric Constant (100 Hz) | 3.187 | — | ASTM D150 |
| Dissipation Factor (100 Hz) | 0.0054 | — | ASTM D150 |
| Dielectric Constant (100 kHz) | 3.139 | — | ASTM D150 |
| Dissipation Factor (100 kHz) | 0.0014 | — | ASTM D150 |
Table 2 of 2
15 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) | 1.38 | — | — |
| Color (Part A) | Tan | — | — |
| Viscosity (77°F (25°C), Part A) | 56900 | — | Brookfield |
| Mixed Viscosity (77°F (25°C)) | 25500 | cps | Brookfield |
| Work Time (100g mass, 77°F (25°C)) | 45 minutes | — | — |
| Gel Time | 60 minutes | — | — |
| Demold Time (77°F (25°C)) | 16 - 24 hours | — | — |
| Demold Time (150°F (65.6°C)) | 2 - 4 hours | — | — |
| Mix Ratio by weight (Part B) | 10 | — | — |
| Mix Ratio by volume (Part B) | 13 | — | — |
