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Ebalta Kunststoff Gmbh GH 723D

ebalta GH 723/D is a very well castable two-components epoxy resin, which, after curing at room temperature, can be worked on well with tools for metalworking. This system is a most suitable back cast resin for molds of which the back has to be worked on mechanically after curing. For back-casting round aluminum granules are used, for bulking: rough aluminum granules. Since the resin/hardener mixture is very liquid, a 50-100 weightcontent of fillers like aluminum granules or silica sand has to be added to get a back-cast mass of 100-200 mm thickness. Under normal circumstances a thickness of 40 mm can be reached with GH 723/D.

Polymer Name: Epoxy Resins & Compounds

Processing Methods: Casting

End Uses: Construction Applications

Flexural Strength: 60.0 - 70.0 MPa

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family

    Epoxy & Epoxy Derivatives

    Polymer Name

    Epoxy Resins & Compounds

    Plastics & Elastomers Functions

    Resin

    Technologies

    Plastics

    Product Families

    Plastics — Thermoset Resins

    Epoxies

    Features & Benefits

    Properties

    low viscosity
    very well castable
    well workable

    Applications & Uses

    Markets

    Building & Construction

    Applications

    Building & Construction — Building Materials

    Other Building Materials

    Plastics & Elastomers End Uses

    Construction Applications

    Plastics & Elastomers Processing Methods

    Casting

    Applications

    Bonding resin for fillers

    Processing Instructions
    • The temperature of material and processing should be between 18 and 25° C.
    • Filled systems should be stirred thoroughly before use.
    • After each use the containers have to be closed again.
    • Porous mold surfaces should be sealed before ( ebalta sealant ).
    • For an optimum mold release we recommend a suitable release agent (e.g. T 1-1) which can be easily applied with a brush.
    • The mold should be treated 2 or 3 times with release agent and allowed to evaporate for approx. 20 min after every application.

    Mixing ratio resin/hardener according to instructions!

    • To get a clean component part , we recommend upward flow casting and to take care of sufficient venting.
    • Resin residues at stirring rods and so on can be easily cleaned with our ebaclean.

    Properties

    Typical Properties
    ValueUnitsTest Method / Conditions
    Shore hardness87 ± 3Shore DDIN ISO 7619-1
    Viscosity (25°C)1500 ± 250mPa.s—
    Coefficient of thermal expansion6310-6K-1—
    Density (20°C)1,75 ± 0,05g/cm3—
    Compressive Strength70 ± 7MPaEN ISO 604
    Pot Life (200g/20°C)55 - 65minutes—
    Flexural elongation at break1.8 ± 0.1%EN ISO 178
    Curing time at RT16 - 20Hrs—
    Flexural modulus6250 ± 400MPaEN ISO 178
    Flexural strength65 ± 5MPaEN ISO 178
    Heat resistance (HDT)46 ± 2°CDIN EN ISO 75 B
    Impact resistance (Charpy)6.3 ± 0.5kJ/m2EN ISO 179

    Packaging & Availability

    Packages
     Resin   GH 723   6,000 kg / 20,000 kg 
     Hardener   D   4,000 kg 

     

    Storage & Handling

    Storing
    • Storage at room temperature (18-25 °C) in closed original container 9 months.
    • Close open containers after use, keep away from moisture and use up immediately