The semi-rigid HPR65

semi-flexible parts and foundry models

Semi-Rigid PArts
with STRENGTH & FLEXIBILITY
  • An increased impact resistance makes the HPR65 a privileged option for foundry model making
  • Its low exothermic reaction offers the possibility to create big parts
  • Semi-rigid material suitable for flexible parts with living hinges

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Intermediate hardness
  • Hardness between a rigid product and a rubber material
  • 65 Shore D product with a flexural modulus of 450 MPa
  • Suitable for parts requiring living hinges

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Superior mechanical properties
  • Extreme impact resistance even on a notched part
  • High elongation at break

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Low exothermic reaction
  • Possibility to make small parts with details
  • Adapted for mass casting up to >100mm wall thickness

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Various casting options
  • Can be hand-casted, used in a vacuum casting machine or a two-component mixing and dispensing machine
  • Curing at 70 °C or in an oven to suit any type of equipment and part size
Typical applications

The HPR65 has been developed to make foundry models for sand moulded casting. It can also be used to realise any semi-rigid type of parts like car bumpers or parts with living hinges.

In Accordance With

REACH

EC Regulation 1907/ 2006, SVHC list in force

RoHS

Directive EU 2011/ 65, 2015/ 863 & 2017/ 2102

Documents

TDS HPR65

Technical data sheet of the HPR65. All mechanical and thermal properties of the all-purpose semi-flexible HPR65.

+ download (pdf | 0,3 MB)

Do you have a question ?

Just ask us!

+33 3 44 31 72 00 comm@synthene.com

Technical Data

PRODUCT NAMEHPR65PRODUCT NAME
Hardness65DHardness(Shore)
Simulation of ²HDPE/ PPSimulation of ²
Colour of the cured materialtransp. amber ³Colour of the cured material
Colourability ⁴
Colourability ⁴
PROPERTIESPROPERTIES
Density1,12Density(g/ cm3)
Flexural modulus450Flexural modulus(MPa)ISO 178
Maximum flexural strength19Maximum flexural strength(MPa)ISO 178
Elongation at break80Elongation at break(%)ISO 527
Tensile modulus of elasticity420Tensile modulus of elasticity(MPa)ISO 527-1
Tensile strength18Tensile strength(MPa)ISO 527-1
Impact resistance20 (notched)Impact resistance(kJ · m-2)ISO 179
Working temperature ⁵ − 20 ... + 85Working temperature ⁵(°C)
Mixing ratio (P : Iso)100 : 74Mixing ratio (P : Iso)(in weight)
Mix viscosity at 25°C885Mix viscosity at 25°C(mPa · s)
Pot life by 25°C13Pot life by 25°C(min)
Demoulding time by 70°C120Demoulding time by 70°C(min)
Linear shrinkage thickness by 23°C7Linear shrinkage thickness by 23°C(mm/ m)
App. maximum wall thicknessApp. maximum wall thickness(mm)
Mould life in silicone ⁶30 +Mould life in silicone ⁶(number of parts)
STORAGESTORAGE
Standard & alternative packaging10,44 17,4Standard & alternative packaging(kg)
Shelf life ⁷18Shelf life ⁷(months)
AnnotationsVery good all round properties
Extremely long mould life
Flame retardant according to EN 60695-11-10A (HB)
Annotations

Do you have a question ?

Just ask us!

+33 3 44 31 72 00 comm@synthene.com

Footnotes

  1. The exact data are available in our TDS. The thermal and mechanical properties have been tested under specific conditions of curing and post-curing
  2. Simulation of plastic once the resin is cured
  3. Under UV action, the colour tends to darken
  4. All the colours indicated in this document are illustrative and not contractual
  5. After heat treatment
  6. Silicone mould life: according to our experience, depending on the mould geometry, surface, demoulding time, kind of silicone, etc.
  7. On unopened jerry-cans or bottles
    flame resistance,  chemical resistance,  dielectric properties,  thermal conductivity,  food compatibility,  optical properties