espol 38.05 - Scott Bader - Polyester - Orthophthalics

Identification & Functionality

Features & Benefits

Materials Features: Corrosion Resistant,
Excellent Wetting Behaviour,
General Purpose,
High Elongation,
High Flexibility,
Rapid Wetting

Applications & Uses

Markets: Industrial
Applications: Industrial — Chemical & Industrial Manufacturing
Tooling & Moldmaking
Compatible Reinforcements: Glass Fiber
Composites Processing Methods: Casting,
Hand Lay-up,
Pultrusion,
Spray Lay-up
Applications: espol™ 38.05 should be stored between 5°C and 25°C in the original, unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidizing agents. If stored outside of these recommendations, shelf life will be significantly reduced.
Formulation Guidelines: espol™ 38.05 should be allowed to attain workshop temperature (25°C - 30°C) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. espol™ 38.05 requires the addition of accelerator and catalyst to start the curing reaction.

The recommended accelerators are Cobalt (1% solution in styrene) which should be added to the resin at 2 - 3% and DMA (10%) which should be added at 0.5%. Both accelerators should be thoroughly incorporated into the resin, using a low shear mechanical stirrer where possible.

The recommended catalyst is MEKP (50%) which should be added to the resin at 1 - 2% and thoroughly incorporated into the resin, using a low shear mechanical stirrer where possible.

N.B. Catalyst and accelerator must not be mixed directly together since they can react with explosive violence.

Properties

Color: Brown
Appearance: Light brown
Cured Properties
Uncured Properties
Note: *Curing Schedule - 24 hours at 20°C, 6 hours at 80°C.

**100g resin + 2.4ml Co (1%) accelerator + 0.5ml DMA (10%) + 1.5ml MEKP (50%) Catalyst.

***100g resin + 1.3ml TPPB.

****Viscosity measured using Brookefield (RVT Model) Viscosity SPL 1 / SPD 10

	Value	Units	Test Method / Conditions
Barcol Hardness	35	—	IS 6746-1994 (Reaffirmed 2005)
Deflection Temperature under Load (1.80MPa)*	100 - 105	ºC	IS 6746-1994 (Reaffirmed 2005)
Tensile Strength*	60 - 70	MPa	IS 6746-1994 (Reaffirmed 2005)
Tensile Modulus*	3300 - 3500	MPa	IS 6746-1994 (Reaffirmed 2005)
Elongation at Break*	2.0 - 2.5	%	IS 6746-1994 (Reaffirmed 2005)
Flexural Strength*	100 - 120	MPa	IS 6746-1994 (Reaffirmed 2005)
Flexural Modulus*	2900 - 3100	MPa	IS 6746-1994 (Reaffirmed 2005)

Technical Details & Test Data

Post Curing: Satisfactory laminates for many applications can be made from espol™ 38.05 by curing at workshop temperature (25°C). For optimum properties, however, laminates should be post-cured before being put into service. The laminate should be allowed to cure for 24 hours at 25°C, and then be oven cured for a minimum of 6 hours 80°C.

Packaging & Availability

Packaging Type: Totes (IBC)
Packaging Information: espol™ 38.05 is available in 35kg, 220kg and bulk containers.

Storage & Handling

Shelf Life: 3 Months
Storage Conditions: espol™ 38.05 should be stored between 5°C and 25°C in the original, unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidising agents. If stored outside of these recommendations, shelf life will be significantly reduced.

espol™ 38.05