Enhancing elongation at break - Highlight

Advanced Materials

Enhancing elongation at break

Quarter 1, 2014

Advanced Materials 2

Table of contents

Flexible epoxy building blocks Product selection Elongation at break, modulus and viscosity Tg and water absorption

Flexible hardeners Product selection Elongation at break Modulus and glass transition temperature Pot life and time to reach 90% conversion

Advanced Materials 3

Product Reactivity vs. Bis-A epoxy resin at room temperature

Impact on mechanical properties vs.Bis-A epoxy resin at room temperature

Viscosity (mPa.s)

Araldite® DY 3601 Slower 10 times higher elongation 42 - 52 mPa.s

Araldite® DY-L Slower 10 times higher elongation 160 - 240 mPa.s

Araldite® PY 4122 Slower Very low modulus 25 times higher elongation

700 - 1400 mPa.s

Araldite® DY-D Similar Slightly lower modulus 2 times higher elongation

15 - 25 mPa.s

Araldite® CY 184 Similar Higher modulus 2-3 times higher elongation

700 - 1000 mPa.s

Flexible epoxy building blocks

Product selection

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Advanced Materials 4

Flexible epoxy building blocks

Elongation at break, modulus and viscosity of the mix Araldite® PY 4122, Araldite® DY-D and Araldite® CY 184

Araldite® epoxy resin + Aradur® 20315 mixed at stoichiometry Cure profile: 1 h at 80°C + 1 h at 120°C + 1 h at 150°C

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Advanced Materials 5

Flexible epoxy building blocks

Tg and water absorption Araldite® PY 4122, Araldite® DY-D and Araldite® CY 184

Araldite® epoxy resin + Aradur® 20315 mixed at stoichiometry Cure profile: 1 h at 80°C + 1 h at 120°C + 1 h at 150°C

Flexible hardeners > < Table of content Flexible epoxy building blocks >

PY 4122, Araldite

Advanced Materials 6

Flexible hardeners

Product selection

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Product Latency / reactivity Impact on mechanical properties cured with Bis-A epoxy resin

Viscosity (mPa.s)

Aradur® 70 Very slow cure at RT Very high flexibility Max elongation 400 % at RT and > 250 % at -10°C

16 000 - 27 000

Aradur® 3275 Good compromise between pot life and curing time at RT

High level of flexibility Elongation 110% at RT and up to 50 % down to -10 °C

200 - 300

Aradur® 15-1 Fast cure at RT Flexible Elongation 50% at RT

100 - 300

Aradur® 90 Extremely fast cure at RT

Good modulus combined with a 8% elongation at RT

10 000 - 16 000

Advanced Materials 7

Elongation at break Aradur® 70, Aradur® 3275, Aradur® 15-1 and Aradur® 90

Flexible hardeners

Araldite® GY 250 (BisA-diglycidyl ether) + hardener mixed at stoichiometry RT cure profile: 2 weeks at 25°C - HT cure profile: 10 h at 80°C

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Advanced Materials

Modulus and glass transition temperature Aradur® 70, Aradur® 3275, Aradur® 15-1 and Aradur® 90

Flexible hardeners

Araldite® GY 250 (BisA-diglycidyl ether) + hardener mixed at stoichiometry RT cure profile: 2 weeks at 25°C - HT cure profile: 10 h at 80°C - Tg measured via DMA (Tan delta Peak)

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Advanced Materials 9

Pot life and time to reach 90% conversion at 60°C and 80°C Aradur® 70, Aradur® 3275, Aradur® 15-1 and Aradur® 90

Flexible hardeners

Araldite® GY 250 (BisA-diglycidyl ether) + hardener mixed at stoichiometry Conversion measured with DSC (isotherm) - Pot life measured with Geltimer (TECAM) on 100 g mix at 25°C

9

Flexible hardeners > < Table of content Flexible epoxy building blocks >

Advanced Materials 10

Keep our products at your fingertips

View the brochure on SlideShare With this brochure get an overview of our comprehensive range of building blocks for formulators.

Download our mobile apps on your smartphone With these apps select immediately the right: !! Araldite® industrial adhesive for your specific need !! Araldite® composite formulated system for your process / application Access the product description or send us an email to request the technical data sheet.

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Advanced Materials 11

For more information

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