Adhesion promoter - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-12-2007, 02:30 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,909
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Adhesion promoter

How does adhesion promoters like "Bulldog" work? Are they any good for bare steel? I am talking about for use on small brackets and such not under BC/CC paint on a body part. I know how etching primers and epoxy work but I was wondering how the Bulldog type products help with adhesion and what it is that makes them different from other primers.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-13-2007, 06:32 AM
Member
 
Last photo:
Join Date: Apr 2004
Location: Georgia
Posts: 3,578
Wiki Edits: 0

Thanks: 10
Thanked 61 Times in 39 Posts
Depends on the adhesion promoter, if it is a Chlorinated polyolefin the adhesion is chemical, this is the most popular for use on TPO and TEO type plastics due to their low if any, surface charge.

Silanes, are sometimes used for plastic adhesion but not as often and used for for adhesion to glass, metal and specialty metals and normally incorporated in the epoxy or 2K type primers.

So the answer is a Silane type may be good or may not but why gamble and try to reinvent the wheel? You know and have epoxy/acid etch products you have been using and know what they are made for.

The only proper way to know if your idea is better is to do an adhesion test with an adhesion tester with and with out.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-13-2007, 09:53 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,909
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
The reason I was looking at using this stuff is that it would be very convenient to have a rattle can type primer for use on small non-critical parts. Case in in point-a fuel pump mounting bracket along with a filter bracket. These parts are small and normally out of sight and would be of little significance but I certainly would not want the paint to flake and allow them to rust plus they will be seen occasionally and would detract from the otherwise clean appearance of the undercarriage if they looked bad. I just thought that if this stuff worked ok it would just be handy to grab a rattle can instead of mixing a small amount of epoxy, etc and then having to wait for it to dry. I guess impatience and taking shortcuts is a recipe for failure so this may not be such a good idea after all, I had that can of Bulldog setting there and while waiting on the epoxy to dry I just got to thinking so I thought I would ask.

Thanks
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-13-2007, 05:23 PM
Member
 
Last photo:
Join Date: Apr 2004
Location: Georgia
Posts: 3,578
Wiki Edits: 0

Thanks: 10
Thanked 61 Times in 39 Posts
You may be beating yourself to death over nothing.

A lot if not most restorers will save the small parts like you are talking about and with piano wire dip the parts and hang.

Mix up a half a quart of epoxy in a paint mixing cup and dip the part, let hang and the excess will drip off in a minute and move on to the next.
Next day dip (if required) in your black paint or other solid color, same with bolts and nuts if needed.

This will not work on big pieces but leaves a nice smooth finish on smaller parts. (no it does not leave runs)

I try to accumulate all the small parts and will spend one whole day dipping in epoxy and next whole day dipping in paint to be efficient and not wasteful of material.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-13-2007, 07:23 PM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Bulldog seems to work great on plastic.
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Does bulldog adhesion promoter need a primer? SplitFire Body - Exterior 7 01-14-2006 02:43 PM
Bulldog adhesion promoter. jcclark Body - Exterior 8 08-25-2005 06:29 PM
Barry, epoxy adhesion testing? baddbob Body - Exterior 21 03-20-2005 09:12 PM
adheasive promoter jefrohunter Body - Exterior 8 03-12-2004 06:24 PM
dupont waterborne adhesion promoter 327amc Body - Exterior 0 01-04-2004 05:18 PM


All times are GMT -6. The time now is 04:50 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.