SKYBOND® 700
- Chemical Family
- Polyimides (PI)
SKYBOND® 700 is a heat reactive aromatic resin which can be thermally cured to a crosslinked polyimide. It is specifically designed for structural and specially applications where extended exposure at temperatures up to 700° F is required.
Other characteristics
- Brand
- SKYBOND
- End Uses
Engine Compartments, Engine Cowlings, Engine Hoods, Varnishes
- Features
Heat Resistance; Has high heat resistance. Can be used continuously at 260°C (can be used at up to 400°C for a short period of time).; Also has high chemical resistance, high adherence properties, and high permeability.; Can also be processed for use in press molding, or foam (heat-resistant foam) molding.
- Markets
- Adhesives & Sealants
- Automotive & Transportation
- Paints & Coatings
- Printing & Packaging
- Solvent
The solvent in Skybond 700 is primarily N-methyl-2-pyrrolidone (NMP) with some ethanol present. NMP can used for dilution. Other solvents having limited dilution capability include ethanol, isopropyl alcohol and xylene. Ketones are not recommended for dilution.
- Storage
Volatile products given off during drying and curing operations are mainly aromatic acids, aromatic nitrogenous compounds and solvents. When composing Skybond 700 to high-temperature conditions, Mechanical exhaust ventilation must be employed to insure good air movement and the avoidance of vapor inhalation.
- Post Cure
Post-curing of laminates made with Skybond 700 resin up to and including the use temperature is essential to achieve maximum heat resistance and retention of properties. For good initial hot strength at 700F a total post-cure of 16 hours with the following steps is recommended for 1/8" thick laminates. It is likely that thicker laminates shouldhave this post-cure cycle extended.
- Coating Type
- Varnishes
- Technology
- CASE Ingredients
- Labeling Claims
- Organic
- Press Laminates
Initial contact conditions cited are based on laboratory work with 2" x 2" twelve-ply laminates. The test is a quick, simple one. The test laminate is ejected hot from the press after a cure cycle of 10 minutes at 600F and a pressure of 250 psi, cut open and examined microscopically to establish the desired vitreous polymer character in the interior of the laminate. This is done because the resin passes through a progressive change from a vitreous condition in the prepreg to a solid vitreous state when processed with optimum conditions. However, a dry curd-like condition related to resin precipitation and inferior laminate properties can be obtained if optimum contact conditions have not been used. Generally, an average of two minutes contact time is required but this should be determined under the conditions which are present for the application of interest.
Technical data
Table 1 of 1
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Cured Solids | 45.0-48.0 | % | S-001.0 |
| Viscosity at 25°C | 3000-7000 | cps | Brookfield LVF S-004.0 |
| Specific Gravity at 25°C | 1.15-1.18 | — | S-005.0 |
