Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Key Features
- Low viscosity
- Rapid cure
- Excellent toughness
- No post cure required
- Pre-filled with a special grade of Alumina Trihydrate (ATH)
- Excellent surface finish
- Excellent FST performance
- Crestapol® 1211A is a versatile resin with excellent fire, smoke & toxicity properties and good mechanical properties.
- Its viscosity characteristics have been designed to promote a good resin flow through the mold using appropriate
- reinforcements, whilst minimizing filler settlement during storage. It is recommended for use when excellent low smoke, low toxic fume emissions and fire resistant laminates is desired.
Applications & Uses
- Applications
- Composites Processing Methods
- Applications
Crestapol® 1211A has been primarily designed for use in closed mold applications, including RTM and Vacuum infusion with suitable reinforcements. Due to its excellent fire, smoke & toxicity properties, the product can be used in the most demanding applications in the building and construction, public transport and railway industries.
- Formulation Guidelines
- Crestapol® 1211A is a pre-filled, partially accelerated resin and must be thoroughly stirred and allowed to attain workshop temperature (18°C - 23°C) before use. It requires the addition of a catalyst and one accelerator to start the curing reaction.
- Recommended Applications
- Catalyst and accelerators should not be mixed directly together, since they react with explosive violence. The recommended catalyst is MEKP (50%) and the recommended accelerator is Accelerator G (1% solution of cobalt, as cobalt octoate, in styrene monomer).
- Cobalt free accelerators may be also considered (for more details on liquid cobalt free cure systems please seek assistance from our Technical Services Department). The accelerator should be added into the resin and thoroughly dispersed prior the injection of the resin in the RTM mold cavity. Catalyst Acetylacetone peroxide can also be used when faster demould times is required.
- Dibenzoyl peroxide based catalysts can also be used to start the curing reaction without the need to add an accelerator. The recommended catalyst is Dibenzoyl peroxide (50%) and should be added into the resin at a level of 1.0% and thoroughly dispersed. The geltimes that can be achieved depend on the levels of accelerator and catalyst. Examples of approximate pot life are shown in the tables below.
Properties
- Appearance
- Cream
- Resin Properties - (without post cure)
- Laminate Properties - (without post cure)
- Cured Properties
- Uncured Properties
- Laminate Properties (Cured)
- Note
- * Made with 4 layers 450g/m² PB CSM
- ** Curing schedule at 24hrs at 20°C, 3hrs at 80°C
- † Curing schedule at 24hours at 20°C, 5 hours at 80°C, 3 hours at 120°C
- Pot Life
Table 1 – 1.5% MEKP (50%)
Parts of Accelerator G to 100
Parts of Catalyzed Resin2.0 2.5 3.0 Pot life (mins) at 20ºC 26.1 21.7 22.7 Pot life (mins) at 25ºC 24.7 19.8 19.2 Table 2 – 1.5% Acetylacetone peroxide
Parts of Accelerator G to 100
Parts of Catalyzed Resin2.0 2.5 3.0 Pot life (mins) at 20ºC 29.6 19.4 16.4 Pot life (mins) at 25ºC 24.3 16.9 13.4 Accelerator G = 1% cobalt as cobalt octoate in styrene monomer.
Table 3 – Dibenzoyl peroxide (50%)
Parts of Perkadox® CH50-X 1.0 1.5 2.0 Pot life (mins) at 20ºC 29.5 23.8 17.0 Pot life (mins) at 25ºC 25.5 16.5 12.7 Inhibitor NLC-10 can be used at ambient temperature to lengthen the geltime of a mixture of Crestapol® 1211A/ Dibenzoyl peroxide (50%). The following table demonstrates the effect of Inhibitor NLC-10 addition to Crestapol® 1211A resin.
Inhibitor NLC-10 (on Resin) Typical Geltime (mins) at 20ºC 0.00% 25.5 0.05% 42.4 0.10% 60.9 0.15% 88.7
| Value | Units | Test Method / Conditions | |
| Barcol Hardness | 45 - 50 | — | — |
| Deflection Temperature Under Load (1.80MPa) | 64 | °C | — |
| Water Absorption (24 hours at 23°C) | 15 - 20 | mg | — |
| Tensile Strength | 32 | MPa | — |
| Tensile Modulus | 8 | GPa | — |
| Elongation (at Break) | 0.82 | % | — |
| Value | Units | Test Method / Conditions | |
| Glass Content* | 15 | % | — |
| Tensile Strength* | 78 | MPa | — |
| Tensile Modulus* | 11.4 | GPa | — |
| Elongation (at Break)* | 1.35 | % | — |
| Flexural Modulus* | 9.4 | GPa | — |
| Flexural Strength* | 158 | MPa | — |
| Value | Units | Test Method / Conditions | |
| Tensile Modulus | 7.9 | GPa | — |
| Tensile Strength | 33 | MPa | — |
| Barcol Hardness | 45 - 50 | — | — |
| Deflection Temperature Under Load (1.80MPa) † | 77 | °C | — |
| Water Absorption (24 hours at 23°C) | 15 - 20 | mg | — |
| Elongation (at Break) | 0.89 | % | — |
| Value | Units | Test Method / Conditions | |
| Specific Gravity (at 25°C) | 1.54 | — | — |
| Geltime* | 20 - 30 | minutes | — |
| Volatile Content | 22.3 | % wt./wt. | — |
| Geltime to Peak | 10 | minutes | — |
| Viscosity (at 25°C, 4500 s⁻¹) | 5 | Poise | — |
| Value | Units | Test Method / Conditions | |
| Glass Content | 15 | % | — |
| Tensile Strength | 77 | MPa | — |
| Tensile Modulus | 10.1 | GPa | — |
| Elongation (at Break) | 1.48 | % | — |
| Flexural Strength | 141 | MPa | — |
| Flexural Modulus | 8.6 | GPa | — |
Technical Details & Test Data
- Post Curing
- Without post cure, laminates made with Crestapol® 1211A can reach approximately 90% of their total cure. Therefore, no post cure is required. For optimum fire retardant properties, however, laminates should be post cured before being put into service. The laminate should be allowed to cure for 24 hours at 20°C, and then be oven cured for 3 hours at 80°C.
- Additives
- Crestapol® 1211A is filled with a special grade of Alumina Trihydrate (ATH) to provide good resin flow in closed mold systems and also give excellent fire, smoke & toxicity properties. It incorporates anti-settling additives to minimize filler settlement during storage and promote good filler re dispersion in the resin.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging
- Crestapol® 1211A is supplied in 25kg and 300kg containers.
Storage & Handling
- Shelf Life
- 3 Months
- Storage
- Crestapol® 1211A should be stored between 5°C and 25°C in the original, unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidizing agents. If stored outside of these recommendations, shelf life will be significantly reduced.