|
||
|
25th March 2017, 19:55 | #1 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
Any Plastic Bonding Knowledge Out There
I am planning to re-bond the top of my coolant tank back to the body after having fitted a coolant level sensor. The material of the tank is PA66-GF30.
I have reviewed a number of Loctite products and would like to know if you have any advise on the subject? Loctite 4090 seems to be suitable candidate, being moisture resistant and rated for 150degC. http://www.henkel-adhesives.co.uk/uk...090_UK_Web.pdf Also recommended is SF 7063 cleaner before applying the glue. I am planning to try and clamp the joint all around and leave for many hours. If anyone has any thoughts on this, I would be pleased to hear from you. |
25th March 2017, 19:58 | #2 | |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
|
Quote:
do you have a picture of this mod? Brian |
|
25th March 2017, 20:05 | #3 |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
|
Ultramid A
The spec sheets for ultramid A doesn't mention bonding properties
|
25th March 2017, 20:18 | #4 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
|
25th March 2017, 20:49 | #5 | |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,753
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
Quote:
EDIT Loctite Adhesives Guide http://na.henkel-adhesives.com/us/co...uide_v6_LR.pdf See pages 36-37 for glass filled nylon66 TC Last edited by T-Cut; 25th March 2017 at 21:00.. |
|
25th March 2017, 23:35 | #6 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,771
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
Ill pm you when mr jack and daniel are not ruling my thoughtslol.....
__________________
Lest we forget..
|
26th March 2017, 11:01 | #7 |
Newbie
MG ZT-T Join Date: Mar 2017
Location: Walton-on-Thames, surrey
Posts: 18
Thanks: 1
Thanked 11 Times in 6 Posts
|
i was going to recomend JB Weld, but when i was looking i found they have a new range of putty too, and their 'waterweld' looks like it may be what you need http://www.jb-weld.co.uk/j-b-weld-ep...ld-epoxy-putty
|
27th March 2017, 20:50 | #8 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
Have spoken with Trikey (Andy) about the manufacturing process for joining the top of the tank. He advised that the tank would have been ultrasonically joined in a process involving heat too. Bonding the tank halves he believes may be a challenge with the material in nylon.
I will go ahead and order some of the Loctite 4090 hybrid adhesive which has something like 4,000lbs yield according to the brochure. Have made up some fittings using rubber hoses and a Schrader valve which allowed me to test a complete tank tonight to 100kpa (14.5psi) and 140kpa (20.3psi), the pressure was determined by the pressure caps I had available which started to vent at the rated pressures on the cap. Once I bond the tank I'll pressure test to 140kpa after a few days curing, perhaps after a heat in an oven. I am contemplating fitting spring steel c-clips around the circumference if only I can find some to fit which is nice and neat, this will help back up the adhesive long term. The surface area of the tank lid is in the region of 29in2. 20.3-14.7(psia)=5.6psi 5.6 x 29 = 162lbs of force acting on joint, which is well within the spec of the bonding agent of up to 4,000lbs. |
27th March 2017, 21:28 | #9 |
I really should get out more.......
75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010
Location: Pontefract
Posts: 2,643
Thanks: 17
Thanked 295 Times in 218 Posts
|
Don't forget you'll need to add some heat and coolant into the mix, otherwise your not recreating the operating environment. Heat and time can have great effects on things....
__________________
How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available |
27th March 2017, 21:33 | #10 |
This is my second home
Hyundai i10 998cc Join Date: Mar 2012
Location: Kilmarnock
Posts: 6,602
Thanks: 2,088
Thanked 2,298 Times in 1,349 Posts
|
Hi.
The header I had that had the sensor fitted was done in a different way. The section under the tank was removed not the two halves. The sensor was fitted from underneath and a new small section bonded in, having a smaller surface area there would be far less stresses. The bonding agent looked like epoxy but certainly not domestic Araldite. While it was in the car there was no issues with leaks.
__________________
Cheers from Trevor MM0KJJ |
|
|