Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Features and Benefits
Crystic VE671 is more reactive than Crystic VE676 because of lower molecular weight. It has a lower styrene content and, also, a lower viscosity than Crystic VE676.
- Chemical resistance
Crystic VE671 has excellent chemical resistance to a wide range of substances (acids, alkalis, oxidizing agents) at room and elevated temperatures. A separate technical leaflet offers the user a comprehensive guide to the use of Crystic VE671 based laminates in a wide variety of chemical environments.
Applications & Uses
- Applications
- Composites End Use
- Composites Processing Methods
- Recommended Applications
It is suitable for fabrication of fiber reinforced composites by all conventional techniques (contact molding, filament winding and injection molding) and for use in many chemical processing industry applications (storage tanks, vessels, ducts).
Properties
- Typical Liquid Resin Properties
- Cured Base Resin
- Note
** Curing Schedule: 24 hrs at 20 °C followed by 3 hrs at 80 °C
*** Curing Schedule: 24 hrs at 20 °C followed by 5 hrs at 80°C and then 3 hrs at 120 °C- Laminate Property
Laminate property
At different temperature Temperature (°C) 23°C 65°C 93°C 107°C 121°C 149°C Flexural strength (MPa) 208 196 188 100 38 22 Flexural modulus (GPa) 7.6 6.9 5.5 3.3 1.6 1.6 Tensile strength (MPa) 137 139 145 124 76 50 Tensile modulus (GPa) 9.2 8.9 8.5 6.3 4.3 - Compressive strength (MPa) 214 - - - - - Glass content (%)
40 Laminate construction:
V/M/M/WR/M/WR/M V = veil, M = CSM, WR = woven roving
| Value | Units | Test Method / Conditions | |
| Acid Value | max. 9 | mg KOH/g | — |
| Viscosity (at 25°C, Brookfield RVT) | 425 - 475 | mPa.s | — |
| Color | max. 7 | Gardner | — |
| Volatile Content | 38 - 42 | % | — |
| Density (at 20°C) | 1.04 - 1.06 | g/ml | — |
| Gel Time (at 25°C, using 100g resin 0.5g –1,0g DMA (10% in Styrene), 0.7g Cobalt toate (3%Co), 2.0g Butanox LPT)* | 14 - 20 | Minutes | — |
| Time to Peak | 22 - 52 | Minutes | — |
| Peak Exotherm | 150 - 170 | °C | — |
| Value | Units | Test Method / Conditions | |
| Tensile Strength ** | 80 | MPa | — |
| Tensile Modulus ** | 3.4 | GPa | — |
| Elongation (to break) ** | 4 - 5 | % | — |
| Flexural Strength ** | 130 | MPa | — |
| Barcol Hardness ** | 40 | — | — |
| Heat Deflection Temperature*** | 100 - 105 | °C | — |
| Water Absorption (7 days)** | 40 | mg | — |
Technical Details & Test Data
- Post Curing
Satisfactory laminates for many applications can be made from Crystic VE671 by curing at ambient temperature (20°C). For optimum properties and long term performance 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 a minimum of 3 hours at 80°C; the time will be dependent upon the thickness of the laminate. Post curing at 100°C is advisable for high operating temperatures.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging
195 Kg resin is supplied in 210 dm3 protected drums, white colored outside.
Storage & Handling
- Shelf Life
- 6 Months
- Storage
- Resin should be stored in dark. It is recommended that storage temperature should be less than 20°C, but should not exceed 25oC. In addition, it can be recommended that the vinyl ester resin is weekly aerated with dry and oil free air for 30 minutes through dip pipe (Note: this dip pipe should not contain any zinc or copper alloy). This is done to improve efficiency of inhibitor in order to extend the shelf life of the resin.