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Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features and Benefits
Crestamould® 474PA can be used in conjunction with glass fiber backed polypropylene (Celmar), and suitably treated uPVC, to produce dimensionally stable composites with high heat and chemical resistance.
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Compatible Reinforcements
- Composites Processing Methods
- Applications
Crestamould® 474PA was developed for use in a wide range of applications throughout the chemical industry, and is suitable for the construction of tanks, pipes and fumestacks to operate in environments where heat and chemical resistance are both required. It is ideally suited to the fabrication of heat resistant, dimensionally stable moulds for cold and heat assisted contact moulding and hot press moulding processes. Crestamould® 474PA is a versatile resin suitable for use in contact moulding and automated processes such as pultrusion.
- Formulation Guidelines
Crestamould® 474PA should be allowed to attain workshop temperature (18°C – 20°C) before use. It needs only the addition °F a catalyst to start the curing reaction. The recommended catalyst is Catalyst M (or Butanox M50). The catalyst should be added at 2% into the resin shortly before use, and thoroughly dispersed. The geltime °F the resin can be approximately determined from the table below.
- Pot Life
Part of Catalyst M to 100 parts of Resin 2.0 Pot life in minutes at 15 40 Pot life in minutes at 20 22 Pot life in minutes at 25 12 The resin, mold and workshop should be at, or above, 15°C before curing is carried out.
Properties
- Typical Liquid Resin Properties
- Resin Properties - Unfilled Casting (Cured)
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, 37.35 s⁻¹) | 5.3 | Poise | — |
| Acid Value | 23 | mg KOH/g | — |
| Volatile Content | 38 | % | — |
| Viscosity (at 25°C, 4500 s⁻¹) | 3.4 | Poise | — |
| Specific Gravity (at 25°C) | 1.1 | g/cm³ | — |
| Stability (in dark at 20°C) | 6 | Months | — |
| Gel Time (at 25°C, using 2% Catalyst M) | 12 | Minutes | — |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (GYZJ 934 - 1) | 48 | — | — |
| Deflection Temperature (under load 1.80 MPa) | 112 | ºC | — |
| Water Absorption (24h, at 23°C) | 28 | mg | — |
| Tensile Strength | 57 | MPa | — |
| Tensile Modulus | 3700 | MPa | — |
| Elongation (at break, 20°C) | 1.8 | % | — |
| Specific Gravity (at 25°C) | 1.22 | — | — |
| Volumetric Shrinkage | 8.2 | % | — |
Regulatory & Compliance
- Approvals
Crestamould 474PA meets the requirements °F BS 3532:1990, for a Type C (heat resistant) polyester resin.
Technical Details & Test Data
- Additives
- Crestamould 474PA 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 Crestamould® 474PA, 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 Crestamould® 474PA can be replaced by Crystic Prefil F.
- Notes
- Curing Schedule - 24hrs at 20°C, 3hrs at 80°C.
- Curing Schedule - 24hrs at 20°C, 5 hrs at 80°C, 3 hrs at 120°C.
- Chemical Resistance
Performance figures for Crestamould® 474PA laminates in over 200 chemical environments are contained in the current edition of Technical leaflet 145.3 – Safe Chemical Containment.
- Post Curing
Crestamold® 474PA was developed for use in a wide range of applications throughout the chemical industry, and is suitable for the construction of tanks, pipes and fumestacks to operate in environments where heat and chemical resistance are both required. It is ideally suited to the fabrication of heat resistant, dimensionally stable molds for cold and heat assisted contact molding and hot press molding processes. Crestamold® 474PA is a versatile resin suitable for use in contact molding and automated processes such as pultrusion.
Packaging & Availability
- Packaging Type
- Packaging
Crestamould® 474PA is supplier in 25kg and 200kg containers. Bulk supplies can be delivered by road tanker.
Storage & Handling
- Storage
Crestamould® 474PA should be stored in the dark in suitable closed containers. It is recommended that the storage temperature should be less than 20°C where practical, but should not exceed 30°C. Ideally, containers should be opened only immediately prior to use..