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Identification & Functionality
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Features and Benefits
Crestomer® 1152PA should be stored between 2°C and 23°C/ 36°F and 73°F in the original unopened container in a dry well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidizing agents. Exposure to temperatures outside these conditions will affect shelf life. Ideally containers should be opened only immediately prior to use. The shelf life for Crestomer® products is defined from date of manufacture if stored as recommended. The expiry date is indicated on the product labels.
- Performance
A filet is effectively a structural member in stiffener applications. It is therefore recommended that cure in production should be assessed by reference to its Shore D hardness prior to overbonding. bondline thickness will vary with the application. The following are recommended:
- Structural filets - 25 mm
- Core bedding/bonding - 1 mm
- FRP to FRP bonding - 1 mm
Applications & Uses
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Formulation Guidelines
Crestomer 1152PA is fully compounded and requires only the addition of Norox KP9 to cure it. Curing should not be carried out at temperatures below 15°C. The resin and workshop should both be at, or above, this temperature. Temperatures below 15°C must be avoided since styrene evaporation from the surface may lead to cracking.
Pot Life
Typical Pot Life in Minutes Temperature 2% Norox KP9 1% Norox KP9 15°C 88 90 20°C 70 80 25°C 50 55 - Recommended Applications
- Crestomer® 1152PA is supplied pre-accelerated. The required hardener is a medium reactivity MEKP catalyst. The catalyst is added at 2% v/w. Crestomer® 1152PA can be applied with a spatula or from a dispensing unit, taking care to keep air entrapment to a minimum. Application should always be carried out at temperatures above 15°C / 59°F. Recommended temperature range for application is between 18°C and 25°C / 64°F - 77°F. The use of additional pigments or fillers is not recommended as they can affect the performance of the adhesive.
- For industrial / commercial use only. The user must determine the suitability of a selected adhesive for a given substrate and application. Contact your local Scott Bader representative for questions or assistance with the selection of adhesives for your use. This product is intended for use by skilled individuals at their own risk. Recommendations contained herein are based on information we believe to be reliable. The properties and strength values are obtained under controlled conditions at the Scott Bader laboratory.
Properties
- Appearance
- Mauve gel
- Mechanical Properties
- Typical Properties
- Application Properties
- Note
- Geltime measured with 100g mass of adhesive at 25°C/ 77°F. Using 2% Butanox M50 catalyst.
- Time taken at 23°C / 73°F (ambient temperature) to achieve 1.4MPa strength in lap-shear tests according to BS ISO.
- Test to BS EN ISO 527-2
- BS EN ISO 62.
- Mix ratio based on volume and weight for both machine dispensing and hand mixing.
- The shelf life for Crestomer® products is defined from the date of manufacture if stored as recommended. The expiry date is indicated on the product labels. Metals test to ASTM D1002 for Lap Shear Strength, Composites and Marine Ply test to ASTM 5868 for Lap Shear Stength, Balsa tested to ASTM D3807 for Cleavage Peel. All at 23°C (73°F)
- Adhesive Failure When Tested
- Substrate Failure When Tested
| Value | Units | Test Method / Conditions | |
| Hardness | 65 | Shore D | — |
| Tensile Strength³ | 22 - 25 | MPa | — |
| Tensile Modulus³ | 1000 - 1500 | MPa | — |
| Tensile Elongation³ | 100 - 120 | % | — |
| Water Absorption⁴ | 0.36 | % | — |
| Value | Units | Test Method / Conditions | |
| Volatile Content | 47 | % | — |
| Viscosity | 250,000 - 320,000 | cP | — |
| Specific Gravity | 1.05 | — | — |
| Mixed Ratio⁵ (by volume) | 50:1 | — | — |
| Value | Units | Test Method / Conditions | |
| Working Time¹ | 50 | Minutes | — |
| Fixture Time² | 10 | Hours | — |
| Gap Filling | 1 - 25 | — | — |
| Color Change (over cure) | None | — | — |
| Recommended Application Temperature | 18 - 25 | °C | — |
Regulatory & Compliance
- Approvals
Crestomer 1152PA has DNV approval and Lloyd’s Statement of Acceptance for craft built under their Survey. After extensive testing for impact resistance and long term resistance to sea water, it has been approved by the MOD for use under NES 166.
Technical Details & Test Data
- Comparisons with Competitive Materials
Crestomer® adhesives are one of a wide variety of materials that can be used in bonded assemblies. Compared to other adhesives, Crestomers offer the following benefits:
- Monomer type identical to polyester resins
- Cured with conventional peroxides
- Low exotherm during cure
- Available in a range of working and fixture times
- Ease of application
- Cost effective
High exotherm in an adhesive can cause the substrate to distort and give poor esthetic characteristics to the parts being bonded. The chemistry of Crestomer® adhesives ensures
that high exotherm temperatures, a characteristic of some other adhesives do not occur. The graph shows the exotherm temperatures of Crestomer® adhesives over a range of test temperatures.FRP to FRP bond strength
Exotherm of Crestomer® adhesives
High exotherm in an adhesive can cause the substrate to distort and give poor aesthetic characteristics to the parts being bonded. The chemistry of Crestomer® adhesives ensures that high exotherm temperatures, a characteristic of some other adhesives, does not occur. The graph shows the exotherm temperatures of Crestomer® adhesives over a range of test temperatures.
- Recommended Substrates
Recommended substrates7
Lap shear / Cleavage strength MPa)Non - recommended
substratesMetals Stainless Steel8 – 11 – 12 MPa
Aluminium8 5 – 8 MPa- Wood Marine ply9 - 2 – 4 MPa
Balsa9 2 – 4 MPa- Composites GRP/FRP9 – 12 – 14 MPa
Polyester resin
DCPD9 – 7 – 8 MPa
Vinyl ester
Epoxy- - Surface Preparation
Crestomer® 1152PA has excellent adhesion to FRP material provided that the surface has been maintained free of dust and grease. This can be guaranteed by the use of proprietary strippable cloths such as peel ply (without lubricant contaminates). If the laminate surface is more than three days old, it is recommended that they are lightly abraded and wiped with acetone or styrene on a lint-free cloth prior to bonding.
Packaging & Availability
- Regional Availability
- Packaging
- Crestomer® 1152PA is supplied in 25 kg and 225 kg containers.
Storage & Handling
- Shelf Life
- 12 Months
- Storage
Crestomer® 1152PA should be stored between 2°C and 23°C/ 36°F and 73°F in the original unopened container in a dry well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidising agents. Exposure to temperatures outside these conditions will affect shelf life. Ideally containers should be opened only immediately prior to use. The shelf life for Crestomer® products is defined from date of manufacture if stored as recommended. The expiry date is indicated on the product labels.