November 28, 2024, 05:47:53 PM
Forum Rules: Read This Before Posting


Topic: copper technology in electronic circuit boards  (Read 5714 times)

0 Members and 1 Guest are viewing this topic.

Offline trankhanh_cr

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
copper technology in electronic circuit boards
« on: January 03, 2017, 05:05:58 PM »
Hi everyone, I'm learning about copper technology in electronic circuit boards, someone could give me a document on this issue are not. Why copper atoms could be linked to the surface of the material, its link here is.
Thank you for reading.

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27863
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: copper technology in electronic circuit boards
« Reply #1 on: January 03, 2017, 05:53:52 PM »
I am afraid what you posted doesn't make much sense. Are you using an automatic translator? If so, it has failed.

I would start googling for "laminating pcb with copper".
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Enthalpy

  • Chemist
  • Sr. Member
  • *
  • Posts: 4036
  • Mole Snacks: +304/-59
Re: copper technology in electronic circuit boards
« Reply #2 on: January 04, 2017, 10:43:31 AM »
Neither am I sure to understand the question.

I've found no definitive information source. I suppose that the copper foils are laminated on the partly cured glass+epoxy composite ("prepreg"), and final curing of the epoxy glues the copper. Though, it seems that much work has been done to improve the adherence of the copper clad, so I can't exclude that an additional glue layer is used.

A manufacturer's website suggests that the copper film is initially thicker, and gets thinned (to 35µm or 70µm for instance) after it holds on the glass+expoxy.

Offline trankhanh_cr

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Re: copper technology in electronic circuit boards
« Reply #3 on: January 05, 2017, 12:26:25 AM »
Sorry, i am going rewrite it.
I am finding document for making CCL (copper clad laminate) by Electrodeposition....
Thanks....

Offline DrCMS

  • Chemist
  • Sr. Member
  • *
  • Posts: 1306
  • Mole Snacks: +212/-84
  • Gender: Male
Re: copper technology in electronic circuit boards
« Reply #4 on: January 05, 2017, 03:56:35 AM »
You might also want to look up the use of photoresists and etching.

Offline Hunter2

  • Sr. Member
  • *****
  • Posts: 2298
  • Mole Snacks: +190/-50
  • Gender: Male
  • Vena Lausa moris pax drux bis totis
Re: copper technology in electronic circuit boards
« Reply #5 on: January 06, 2017, 02:19:27 PM »
Sorry, i am going rewrite it.
I am finding document for making CCL (copper clad laminate) by Electrodeposition....
Thanks....

Copperclad material is manufactured by electrodepositing on Stainless steel coils.
https://www.rogerscorp.com/documents/749/acs/Copper-Foils-for-High-Frequency-Circuit-Materials.pdf

Offline Enthalpy

  • Chemist
  • Sr. Member
  • *
  • Posts: 4036
  • Mole Snacks: +304/-59
Re: copper technology in electronic circuit boards
« Reply #6 on: January 07, 2017, 07:14:27 PM »
The same linked Pdf also cites lamination as a method to produce the copper foil from a billet. No idea which one is more common. Some patents indicate that the rough electrodeposited copper absorbs better the IR light from a laser used to pattern the copper, but this must be a marginal concern.

Whatever the method to obtain a copper film, it must adhere on the epoxy somehow.

Sponsored Links