Polyethylene Creep

[Ermine]

I am looking for data on polyethylene creep specifically for LLDPE. Any data would be appreciated.

Thanks.

 

[patprimmer]

Have you approached the larger traditional high quality manufacturers. I know ICI when they existed published a lot of creep data for HDPE. I expect they did also for other grades. I am not sure who does LLDPE now.

Regards
Pat
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[msquared48]

Lexan is well known for that phenom.

Maybe you will find something in their testing data.

Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask

 

[patprimmer]

PE is in another ballpark compared to polycarbonate when it comes to creep, PE being a whole lot worse.

Data vs reality will depend on many factors, temperature and constant or cyclic natures being the more important, but degree of crystallinity, nature of crystals and orientation of molecules will have a significant effect.

The crystalinity and molecular orientation will be somewhat dependant on mould design and processing conditions.

Regards
Pat
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