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HYTAC® W

1 of 8 products in this brand
HYTAC® W was CMT’s first commercially-produced epoxy syntactic foam. With low thermal conductivity and CTLE associated with the syntactic structure, it proved to the thermoforming industry that felt-covered wood plugs could be resigned to the dustbin of history. While still used in low-volume or low-cost applications, W has been supplanted by other, superior levels of HYTAC® materials. It has low thermal conductivity and specific heat, this translates to lower heat transfer reducing warm-up time and virtually eliminating material sticking to the plug. It is dimensionally stable which means, that the low coefficient of thermal expansion means the plug maintains its shape over a wide temperature range.

Compatible Polymers & Resins: Polyethylenes (PE), Polystyrenes (PS)

Chemical Family: Epoxy & Epoxy Derivatives

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Epoxy & Epoxy Derivatives

Technologies

Composite Materials

Product Families

Composite Materials — Core Materials

Foam Cores

Features & Benefits

Materials Features

Cost Effective,

Dimensional Stability,

Good Processability

Benefits
  • Low heat transfer providing reduced warm-up times
  • Improved material distribution compared to basic alternatives
  • Low thermal expansion for better process stability

Applications & Uses

Markets

Industrial,

Printing & Packaging

Applications

Industrial — Chemical & Industrial Manufacturing

Tooling & Moldmaking

Printing & Packaging — Packaging

Non-Food Consumer Packaging

Compatible Polymers & Resins

Polyethylenes (PE),

Polystyrenes (PS)

Plastics & Elastomers Processing Methods

Thermoforming

Thermoforming Applications
  • PS
  • PE
Applications

HYTAC®-W is often used for short run or price sensitive applications, providing cost-effective, low thermal conductivity plugs for quick start up times, better material distribution, improved surface appearance and longer life than basic alternatives.

Machining and Polishing Guides

HYTAC materials are generally easy to machine and polish. Following the CMT guidelines will improve surface quality and consistency in plug performance.

Properties

Physical Form

Blocks,

Rods

Typical Properties
ValueUnitsTest Method / Conditions
Density657 – 721kg/m3-
Thermal Conductivity0.11W/m°K-
Coefficient of Thermal Expansion (CTE)39.6 x 10ˉ⁶m/m/°C-
Compressive Strength42.7MPa-
Service Temperature176°C-
Flexural Toughness18.6kPaASTM D790

Technical Details & Test Data

HYTAC® Relative Performance
  W XTL WF WFT FLX FLXT C1R B1X
Ease Of Machining 2 5 2 3 4 4 4 5
Elimination of Machining Dust 1 5 1 1 3 3 3 5
Ease of Polishing 2 4 2 4 5 5 4 2
Resistance to Abuse 1 5 2 2 3 3 4 5
Fine Detail Durability 1 5 2 2 3 3 4 5
Even Sheet Distribution 3 5 3 3 5 4 5 5

1 = Lowest relative performance
5 = Best relative performance