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Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Features and Benefits
In order to develop optimum heat and chemical resistance, cold cured Crystic 198 laminates must be post cured before being put into service. Moldings should be allowed to cure for 24 hours at 20ºC and then be oven cured for 3 hours at 80ºC. Where laminates are to withstand higher service temperatures than 80ºC, a further period of post cure at the operating temperature should be given. Post curing is not normally necessary for heat cured laminates, provided that the molding cycle is adequate.
Applications & Uses
- Applications
- Applications
Crystic 198 was developed for use in a wide range of applications throughout the chemical industry. It is particularly suitable for the construction of tanks, pipes and fumestacks to operate in environments where heat and chemical resistance are both required. Crystic 198 is a versatile resin suitable for use in contact moulding and automated processes such as pultrusion.
- Formulation Guidelines
Crystic198 can be used in both hot and cold curing formulations.
- Pot Life
Parts of Accelerator E to 100 parts of Catalysed Resin 1.0 2.0 3.0 4.0 Pot life in minutes at 15ºC 51 32 24 19 Pot life in minutes at 20ºC 30 20 16 12 Pot life in minutes at 25ºC 19 13 10 7 The resin, mould and workshop should be at, or above, 15ºC before curing is carried out.
Properties
- Typical Liquid Resin Properties
- Laminate properties
- Resin Properties - Unfilled Casting (Cured)
- 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
** Made with 4 layers 450g/m2 EB CSM. Curing schedule 24 hrs at 20ºC, 3 hrs at 80ºC.
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, 37.35 s⁻¹) | 5.5 | Poise | BS 2782 |
| Specific Gravity (at 25°C) | 1.11 | — | BS 2782 |
| Volatile Content | 36 | % | BS 2782 |
| Acid Value | 24 | mg KOH/g | BS 2782 |
| Stability (at 20°C) | 6 | Months | BS 2782 |
| Gel Time (at 25°C, using 2% Catalyst M, 4% Accelerator E) | 12 | Minutes | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Glass Content | 28 | % | BS 2782 |
| Tensile Strength | 74 | MPa | BS 2782 |
| Tensile Modulus | 7100 | MPa | BS 2782 |
| Elongation (at break) | 1.7 | % | BS 2782 |
| Flexural Strength | 189 | MPa | BS 2782 |
| Flexural Modulus | 7300 | MPa | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 48 | — | BS 2782 |
| Deflection Temperature (under load 1.80 MPa) †* | 112 | ºC | BS 2782 |
| Water Absorption (24h, at 23°C)* | 28 | mg | BS 2782 |
| Tensile Strength* | 57 | MPa | BS 2782 |
| Tensile Modulus* | 3700 | MPa | BS 2782 |
| Elongation (at break)* | 1.8 | % | BS 2782 |
| Specific Gravity (at 25°C)* | 1.22 | — | BS 2782 |
| Volumetric Shrinkage* | 8.2 | % | BS 2782 |
Regulatory & Compliance
- Approvals
Crystic 198 meets the requirements of BS 3532:1990, for a Type C (heat resistant) polyester resin.
Technical Details & Test Data
- Post Curing
In order to develop optimum heat and chemical resistance, cold cured Crystic 198 laminates must be post cured before being put into service. Mouldings should be allowed to cure for 24 hours at 20ºC and then be oven cured for 3 hours at 80ºC. Where laminates are to withstand higher service temperatures than 80ºC, a further period of post cure at the operating temperature should be given. Post curing is not normally necessary for heat cured laminates, provided that the moulding cycle is adequate.
- Cold Curing
- Crystic 198 should be allowed to attain workshop temperature (18ºC - 20ºC) before use. It requires the addition of a catalyst and an accelerator to start the curing reaction.
- NB Catalyst and accelerator must not be mixed directly together, as they can react with explosive violence.
- The recommended catalyst is Catalyst M (or Butanox M50) which should be added at 2% into the resin, and thoroughly dispersed. The catalysed mix will remain usable at workshop temperature (18ºC - 20ºC) for approximately 8 hours. Shortly before use, the correct amount of Accelerator E should be stirred into the catalysed resin.
- Hot Curing
The recommended catalyst is Catalyst Powder B (or Lucidol CH50) which should be added at 2% into the resin and thoroughly dispersed. The catalysed mix will remain usable for several days at workshop temperature (18ºC - 20ºC). Cure should take place between 80ºC and 140ºC, but for most applications 120ºC will be satisfactory.
- Additives
- Crystic 198 can be pigmented by the addition of up to 5% of Crystic Pigment Paste. However, fillers and pigments can adversely affect the heat and chemical resistance of Crystic 198, and customers should satisfy themselves that the required properties will be obtained before any large scale use.
- When reduced fire hazard laminates are required, up to 20% by weight of Crystic 198 can be replaced by Crystic Prefil F.
- Chemical Resistance
Performance figures for Crystic 198 laminates in over 200 chemical environments are contained in the current edition of our Chemical Containment Brochure.
Packaging & Availability
- Packaging Type
- Packaging
Crystic 198 is supplied in 25kg and 200kg containers. Bulk supplies can be delivered by road tanker.
Storage & Handling
- Storage
Crystic 198 should be stored in the dark in suitable closed containers. It is recommended that the storage temperature should be less than 20ºC where practical, but should not exceed 30ºC. Ideally, containers should be opened only immediately prior to use.