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T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)

T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)

T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)

Product catalog summary
Introduction
T-Paste 70-2 is a low-density epoxy tooling paste designed for marine, wind energy, and automotive industries. It offers improvements over its predecessor, T-Paste 70-1, by enhancing design freedom and accuracy in pattern and mould manufacturing.

Benefits
  • Compatible with various mixing machines.
  • Easy application up to 40mm thickness on vertical surfaces.
  • Low exotherm and shrinkage.
  • Machinable after one day at 21°C.
  • High-quality surface finish and temperature performance up to 85°C.
  • 20% lower viscosity for easier application.

Properties
Component Properties: The resin and hardener have specific mix ratios and viscosities, with a density of 0.74 g/cm³ for resin and 0.68 g/cm³ for hardener.
Working Properties: The mix appears grey, with a maximum layer thickness of 40mm and machinable after 2 days at 20°C.
Cured System Properties: After curing, the density ranges from 0.71 to 0.75 g/cm³, with a hardness of Shore D 55 and a deflection temperature of 43°C.

Substrate Selection
Various substrates are recommended based on cost and performance, including Expanded Polystyrene, Styrofoam, Rigid PU Foam, SAN Foam, and Obomodulan PU Tooling boards.

Mixing and Dispensing
Using a mixing machine is recommended to avoid air entrapment. Several machine manufacturers are suggested.

Application and CNC Machining
Contact Gurit Technical Support for detailed application and machining guidance. Coverage is 18kg per m² at 20-25mm thickness.

Recommended Sealers / Release Agents
For low gloss patterns, Chemlease RPM712N or MP117 is recommended. For high gloss, Duratec or Llewellyn Ryland products are suggested.

Cure of T-Paste 70-2
Ambient cure achieves 43°C performance, while post-curing at higher temperatures achieves 85°C.

Repair
Use T-Paste 70-2 Repair for defects, with further details in the repair datasheet.

Health and Safety
Protective measures include wearing gloves, overalls, and eye protection. Ensure adequate ventilation and avoid inhaling dust or vapors.

Transport & Storage
Store in closed containers between 18°C and 25°C. The shelf life is 12 months from manufacture.

Notice
All advice is given in good faith, with no warranty beyond written specifications. Customers should conduct their own testing to ensure suitability.
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Catalog excerpts

T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-1

Low Density Epoxy Tooling Paste ■ Compatible with 2KM, Dekumed, Dopag, Graco &Tartler mixing machines ■ Easy to apply at thicknesses up to 40mm on a vertical surface ■ Low exotherm & shrinkage in thick sections ■ Can be rough machined after 1 day@21°C ■ Excellent machining properties ■ Provides a high quality surface finish for mould or part production ■ 20% lower viscosity for easier pumping, lower back pressure and less T-Paste 70-2 has been developed to offer significant application improvements overT-Paste 70-1 T-Paste 70-2 has been designed for Marine, Wind Energy and Automotive customers looking for a fast and reliable way to manufacture patterns and direct moulds T-Paste 70-2 combined with CNC technology allows more design freedom and improves pattern / direct mould accuracy whilst reducing production processes

 Open the catalog to page 1
T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-2

"Any deviation from the prescribed ratio will affect the cured properties of the paste. Ensure substructure is strong, stable, clean and free of loose material. The paste can be applied as a single layer up to 40mm in thickness using suitable mixing / dispensing equipment. Allow to cure for at least 48 hours at room temperature before machining. Dlease contact SP-High Modulus for further advice on suitable structures. "Density depending on mixing machine used to dispense paste. ***Test sample 1000 x 60 x 40mm, released. No measurable shrinkage on the test sample. Please note: When coating larger...

 Open the catalog to page 2
T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-3

Substrate Selection

 Open the catalog to page 3
T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-4

Mixing and dispensing of T-Paste 70-2 It is recommended to use a mixing machine to mix and dispense T-Paste 70-2. Mixing by hand will result in air entrapment in the paste, and significant repairs to the pattern / direct mould use table supplied Mixing Machine Suppliers Please contact Gurit Technical Support for information on application and CNC machining of T-Paste 70-2 Based on a recommended application thickness of 20-25mm, Ambient Cure When cured at an ambient temperature of 21 °C, theT-Paste 70-2 product achieves a temperature performance of 43°C Post cure When postcured at higher temperatures...

 Open the catalog to page 4
T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-5

The following points must be considered: 1. Skin contact must be avoided by wearing protective gloves. Gurit recommends the use of disposable nitrile gloves for most applications. The use of barrier creams is not recommended, but to preserve skin condition a moisturising cream should be used after washing. 2. Overalls or other protective clothing should be worn when mixing, laminating or sanding. Contaminated work clothes should be thoroughly cleaned before re-use. 3. Eye protection should be worn if there is a risk of resin. hardener, solvent or dust entering the eyes. If this occurs flush the...

 Open the catalog to page 5
T-Paste 70-2 - Low Density Epoxy Tooling Paste (v3)-6

Transport & Storage T-Paste 70-2 should be kept in securely closed containers during transport and storage. Any accidental spillage should be soaked up with sand, sawdust, cotton waste or any other absorbent material. The area should then be washed clean. (See appropriate Safety Data Sheet). The shelf life is 12 months from date of manufacture for both Resin and Hardener. Ideally, storage should be in a warm dry place out of direct sunlight. The temperature should be between 18°C and 25°C. Containers should be firmly closed, as the hardener in particular will suffer serious degradation if left...

 Open the catalog to page 6

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.