Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Features and Benefits
- Low viscosity
- Direct bonding on acrylic
- Medium reactivity
- Medium to high HDT
- Good chemical resistance
- Rapid and easy impregnation
- No primer needed Cost savings
- Rapid hardening even on thin laminates
- Suitable for many applications
- Suitable for oil tanks production
Applications & Uses
- Markets
- Composites Processing Methods
- Recommended Applications
Crystic 3642.3 can be used by spray or by filament winding but also by hand lay up. The resin can be used in many applications but its high performance makes it particularly suitable for the production of oil tanks and also for direct bonding on sanitary acrylic.
- Formulation Guidelines
The following cold curing formulation is recommended:
- Crystic 3642.3 : 100 part
- Catalyst M : 1 to 2 parts
- Accelerator E : 2.5 to 7 parts
Catalyst M is a Methyl Ethyl Ketone Peroxide at 50% such as the Butanox M50 from AKZO. Accelerator E is a cobalt octoate at 0.4 % active cobalt. Catalyst and accelerator should not be mixed directly together as they will react with explosive violence
- Gel time
The ambient temperature, the quantity and the type of catalyst and accelerator will control the gel time of the resin. The following table shows the gel time in minutes at 20°C of 100 parts of Crystic 3642.3.
Parts of Accelerator E Parts of Catalyst M 2.5 4 7 1 21 minutes 14 minutes 9 minutes 2 15 minutes 11 minutes 7 minutes Curing should not be carried out at temperatures below 15°C.
The reactivity of CRYSTIC 3642.3 according to the SPI test (NF T 51022) is as follows:
Gel time 4’30 +/- 30’’ Time to pic 7’ +/- 30’’ Pic exotherm temperature 220°C +/- 5°C
Properties
- Color
- Typical Liquid Resin Properties
- Cured Properties
- Note
*Curing schedule - 24 hrs at 20ºC, 3 hrs at 80ºC
†Curing schedule - 24 hrs at 20ºC, 5 hrs at 80ºC, 3 hrs at 120ºC
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, Rhéomat at 37.35 s⁻¹) | 2 - 3 | dPa.s | BS 2782 |
| Specific Gravity (at 25°C) | 1.1 | - | BS 2782 |
| Volatile Content | 38 - 42 | % | BS 2782 |
| Acid Value | 22 - 25 | mg KOH/g | BS 2782 |
| Stability (at 20°C) | 6 | Months | BS 2782 |
| Gel Time (at 20°C, using 1% Catalyst M and 2.5% Accelerator E) | 18 - 23 | Minutes | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 45 | - | BS 2782: 1980 |
| Deflection Temperature (under load 1.80 MPa) †* | 75 | ºC | BS 2782: 1980 |
| Water Absorption (24h, at 23°C)* | 15 | mg | BS 2782: 1980 |
| Tensile Strength* | 70 | MPa | BS 2782: 1980 |
| Tensile Modulus* | 3200 | MPa | BS 2782: 1980 |
| Elongation (at break)* | 2 | % | BS 2782: 1980 |
| Flexural Strength* | 65 | MPa | BS 2782: 1980 |
| Flexural Modulus* | 4000 | MPa | BS 2782: 1980 |
| Specific Gravity (at 25°C)* | 1.2 | - | BS 2782: 1980 |
Regulatory & Compliance
- Approvals
- Crystic® 3642.3 has the SKZ approval for the production of oil tanks.
Technical Details & Test Data
- Additives
Since certain pigments, fillers or extra styrene may the affect properties of Crystic 3642.3 their effect should be evaluated before addition to the formulation.
- Post Curing
For most applications satisfactory result will be obtained by curing at room temperature (20°C). Some improvement in properties may be obtained by post-curing 16 hours at 40°C after release from the mold.
Packaging & Availability
- Packaging Type
- Packaging
- Crystic® 3642.3 is supplied in 225kg and 1100kg containers. Bulk supplies can be delivered by road tanker.
- Variants
Crystic 3642.9 is a high solid content version. Crystic 3642 3Y is a variant version with internal release agent
Storage & Handling
- Storage
- Crystic® 3642.3 should be stored under cover in the dark within the container it is supplied. It is recommended that the storage temperature should not exceed 20°C.