Creep in LLDPE
Creep in LLDPE
(OP)
I have been doing Finite Element Analyses of a part and have been trying to find creep information for LLDPE. My client has already asked his supplier and got no help. (In fact supplier said "there is no change with time in the modulus") Temperature will not be elevated and I'm looking for 5 to 10 year creep modulus values. As an estimate I have been using 1/3 of the short term datasheet modulus value.
Can anybody steer me to some data?
Thanks
Jerzy
Can anybody steer me to some data?
Thanks
Jerzy






RE: Creep in LLDPE
Borealis springs to mind
http://www.borealisgroup.com/about/production-site...
Regards
Pat
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RE: Creep in LLDPE
And it will creep a lot.
Regards
Pat
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RE: Creep in LLDPE
they seem to offer only film extrusion grades.
Thanks again for the reply.
Jerzy
RE: Creep in LLDPE
I am not really up to date on who now makes LLDPE. Maybe also Dow.
Rotational moulding grades are pretty much low MW grades with lots of heat stabiliser and no nucleating agents or mould release. They are injection moulding barefoot resin ground to a fine powder with heat stabiliser.
Regards
Pat
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RE: Creep in LLDPE
http://www.google.com/url?sa=t&rct=j&q=lld...
That paper gives some data.
Chris
Chris DeArmitt - PhD FRSC CChem
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RE: Creep in LLDPE
http://www.qenos.com.au/internet/home.nsf/web/CTHS...
Chris DeArmitt - PhD FRSC CChem
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RE: Creep in LLDPE
I don't buy resins, but I'll see if my client has dealt with the company.
Thank you again (and also Pat for his comments).
I sent you a star.
jerzy
RE: Creep in LLDPE
jerzy
RE: Creep in LLDPE
Chris DeArmitt - PhD FRSC CChem
Plastic & Additives Webinars
Instant Downloads & Inexpensive
www.plastictraining.com
RE: Creep in LLDPE
But the EXCEL sheet is password protected: it downloads OK but won't open without the password--on my machine it won't anyway.
My client is getting a password.
Thanks again
Jerzy