rharshberger
Well-Known Member
I get tired of reading posts about whose epoxy is better so I went out and gathered so common epoxy technical data sheets from our manufacturers and vendors, my opinion after comparing them is that none have a definitive edge over the others but each does have some characteristics that may make them better for a certain application. I am not sure why the US Composites have a range for PSI's but it may be due to different curing techniques. All epoxies I believe are considered to be "neat" as tested (only Aeropoxy gave test data with reinforcements like FG, CF, and Kevlar and that data is not listed on the table below). For the US Composites 150 the lower rated of the two hardeners was chosen, an inquiry is in the US Composites for clarification on which hardener is the correct one for the 3:1 ratio, the other could be the 1:1 ratio.
Edit: 1/20/2019
Proline Epoxy
Tensile Strenth psi 9,500
Compression Strength psi 15,000
Flexural Strength psi 16,000
Shore D at 73F 90
Shore D at 350F 78
Proline 4500 is right along similar lines as the Aeropoxy PR2032, both of which are gel consistencies iirc.
Information taken directly from the Technical Data Sheets as provided by the manufacturers/vendors. This information is compiled in an effort to give as direct a comparison as possible for all the epoxies that we as rocketry hobbyists tend to use.
View attachment 311983
View attachment 150 Thick Resin.pdf
View attachment AEROPOXY ES6209 Bulletin.pdf
View attachment AEROPOXY PR2032 Bulletin w-4 Hardeners 24Jun08.pdf
View attachment JB-Weld-Technical-Datasheet.pdf
View attachment 311987
View attachment TDS 105_205.pdf
View attachment TDS 105_206.pdf
View attachment TDS 105_209.pdf
The West Systems Epoxies are the TDS files, Glenmarc RocketPoxy is G5000, and the others are Aeropoxy and US Composites.
Edit: 1/19/2019 The original table in this post was corrupted by the new XenForo update when TRF upgraded, so the only thing that changed was removal of the corrupted text and a JPG of the original table was inserted. Proline is not on the table as I did not have data available for it, if anyone has a Technical Data Sheet for Proline 4500 please share it.
Edit: 1/20/2019
Proline Epoxy
Tensile Strenth psi 9,500
Compression Strength psi 15,000
Flexural Strength psi 16,000
Shore D at 73F 90
Shore D at 350F 78
Proline 4500 is right along similar lines as the Aeropoxy PR2032, both of which are gel consistencies iirc.
Information taken directly from the Technical Data Sheets as provided by the manufacturers/vendors. This information is compiled in an effort to give as direct a comparison as possible for all the epoxies that we as rocketry hobbyists tend to use.
View attachment 311983
View attachment 150 Thick Resin.pdf
View attachment AEROPOXY ES6209 Bulletin.pdf
View attachment AEROPOXY PR2032 Bulletin w-4 Hardeners 24Jun08.pdf
View attachment JB-Weld-Technical-Datasheet.pdf
View attachment 311987
View attachment TDS 105_205.pdf
View attachment TDS 105_206.pdf
View attachment TDS 105_209.pdf
The West Systems Epoxies are the TDS files, Glenmarc RocketPoxy is G5000, and the others are Aeropoxy and US Composites.
Edit: 1/19/2019 The original table in this post was corrupted by the new XenForo update when TRF upgraded, so the only thing that changed was removal of the corrupted text and a JPG of the original table was inserted. Proline is not on the table as I did not have data available for it, if anyone has a Technical Data Sheet for Proline 4500 please share it.
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