the elastic modulus of nylon6

• Mar 10, 2004

• #2

EdDanzer

Mechanical

Oct 30, 2002

1,028

US

The values on nylon will very from moisture content. We have found it difficult to reach moisture equilibrium with this material. This moisture problem effects size to a great degree.

 

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• Mar 12, 2004

• #3

Chris1001

Materials

Jan 30, 2004

13

GB

I'd agree with the moisture comments.
Only test after a period such as 24h, semi-crystalline polymers such as nylon 6 can increase in crystalline content and properties such as E modulus can change as a consequence.
Ensure test geometry & test rate are the same as the literature values you are looking at.

 

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• Mar 12, 2004

• #4

EdDanzer

Mechanical

Oct 30, 2002

1,028

US

Try this site

http://plastics.dupont.com/NASApp/myplastics/Mediator?id=164&locale=en_US

If you register you can get a PDF on Zytel but it is a 916K file.

 

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• Apr 8, 2004

• #5

mirekp

Mechanical

Sep 7, 2002

49

CZ

Good pages about plastic materials is:

http://www.boedeker.com/nylonc_p.htm

maybe it help

Mirekp

http://www.mitcalc.com

mechanical engineering calculations

 

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• Apr 14, 2004

• #6

plasgears

Mechanical

Dec 11, 2002

1,075

US

Nylon 6 has a remarkable behavior in an overload condition like stall. In one gearbox application requiring stall tolerance, we were breaking acetal gears until we switched to Nylon 6. The teeth bend but do not break. We were not allowed the benefit of a slip clutch, but we used a quick acting current limiter in this DC motor application.

 

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