×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Can overheated glass filled nylon "shed" it's glass fibers?

Can overheated glass filled nylon "shed" it's glass fibers?

Can overheated glass filled nylon "shed" it's glass fibers?

(OP)
I have a customer returned part that has clearly been overheated. The strange thing is that when I cut it open everything is covered in what appear to be glass fibers. I have never seen this before. The nylon 66 30% GF bobbin has been melted in places but I've never seen thousands of fibers come out of similar parts. But I don't know where else they could come from. What do you think?


----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

RE: Can overheated glass filled nylon "shed" it's glass fibers?

It seems that I am seeing strands mainly in the upper right corner of the picture that you provided . Are those strands fiberglass in composition?

RE: Can overheated glass filled nylon "shed" it's glass fibers?

If the nylon burned away then the glass strands would be left.
B.E.

You are judged not by what you know, but by what you can do.

RE: Can overheated glass filled nylon "shed" it's glass fibers?

Glass fibers have no ductility, which means that they do not yield when bent and they will behave like microscopic springs that are held in place by the resin around them. Nylon will drop to a fairly low viscosity above its melting point, and this will allow the fibers to spring out from the surface. Glass fibers are just very small diameter glass rods.

RE: Can overheated glass filled nylon "shed" it's glass fibers?

(OP)

Quote (chicopee)

It seems that I am seeing strands mainly in the upper right corner of the picture that you provided . Are those strands fiberglass in composition?
That's copper wire in the upper right corner.

The nylon is not burned but it did do some plastic flow, not sure if it really reached the melting point but close.

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close