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PTM&W Industries, Inc OC3700

PTM&W Industries, Inc OC3700 is a two-part, room temperature curing epoxy optical cement. OC3700 is recommended for glass to glass bonding, where its law mixed viscosity and room temperature cure allow as much as an hour for close positioning. In addition, its index of refraction and unusually low coefficient of thermal expansion make it especially suited to glass bonding.

Product Type: 2K (2 component) Adhesive, Epoxy Adhesive

Compatible Substrates & Surfaces: Glass

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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features

Applications & Uses

Compatible Substrates & Surfaces

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Mix Ratio (By Weight )100 - 26Wt.PTM&W
Mixed Viscosity300 - 600cps
Cured Hardness86Shore DASTM D2240
Specific Gravity1.04 - 1.10ASTM D1475
Tensile Strength6970psiASTM D638
Tensile modulus496000psiASTM D638
Elongation At Break1.5%ASTM D638
Flexural Strength14226psiASTM D790
Flexural Modulus563824psiASTM D790
Compressive Strength14360psiASTM D695
Glass Transition Temp. {Tg, DSC}144°FASTM D7028
Glass Transition Temp. {Tg, TMA}145°FASTM D7028
Glass Transition Temp. (DMA, Tg Peak)145°FASTM D7028
Thermal Coefficient of Expansion (Range: 30°C to 50°C)3.54 x 10^-5°FASTM D696
Typical Properties
ValueUnitsTest Method / Conditions
Pot Life (4 fl. Oz. Mass At 77°F)25 - 45min.D2471

Packaging & Availability

Packaging Weights

003700 is packaged in glass Pint bottles at 1 Ib, Net Weight each for Part A and Part B. A Kit consists of 3 Pints Part A plus 1 Pint Part B.

Storage & Handling

Handling Instructions
  • Combine 100 parts by weight 003700 Part A with 26 parts by weight 0C3700 Part B, and mix thoroughly.
  • Gel time is 25 to 45 minutes @ 77°F in a 100 gram mass.
  • A cure sufficient for handling will be achieved in 24 to 36 hours at room temperature, or 4 to 6 hours at 150°F. In either case, full cure is achieved after 5 to 7 days at room temperature.
  • Parts bonded with 003700 can be removed by immersing in Dimethyl Formamide (DMF) at 180°F - 200°F for 8 to 24 hours.

* CAUTION: DMF is a tetraterogen, and supplier's precautions must be followed.