Blitz Audi RS4 200mm Body
04-23-2010, 01:30 PM
#16
Thanks for your replies.
I am a paint engineer, working for a large paint company and I have been painting poly carbonate bodies for close to 20 years.
I do wash my bodies with dish washing detergent and wipe them with isopropanol before I paint.
When I painted the RS4, I did 2 R5-N's at the same time.
The Protoform bodies are fine as usual, just the RS4 has adhesion problems.
As I mentioned before, two of my friends painted theirs too with Tamiya spray cans and have the same problems.
Today I took a couple of cut offs of the RS4 body to the lab and did a few tests on them.
Turns out that the polycarbonate (PC) they are using has a surface tension of 20-22 N/mm, which is very low and does not provide enough polarity for paint adhesion.
The Protoform plastic has 67 N/mm, which is perfect.
Also, the density of the Titan PC varies considerable across the parts, which leads to areas that literally "reject" the paint.
After seeing these results, I added 2% Methyl Pyrollidone (water mixable solvent that attacks plastics) to the Fascolor/Createx paint and scuffed the PC with fine scotch brite
This together provided acceptable adhesion, but the PC quality, Titan is using for this body seems not very good.
The negative result is that you can't use chrome colors anymore since the show the scuff marks.
Btw, mould release agents on vacuum formed PC would be very unusual, but of course possible.
I am a paint engineer, working for a large paint company and I have been painting poly carbonate bodies for close to 20 years.
I do wash my bodies with dish washing detergent and wipe them with isopropanol before I paint.
When I painted the RS4, I did 2 R5-N's at the same time.
The Protoform bodies are fine as usual, just the RS4 has adhesion problems.
As I mentioned before, two of my friends painted theirs too with Tamiya spray cans and have the same problems.
Today I took a couple of cut offs of the RS4 body to the lab and did a few tests on them.
Turns out that the polycarbonate (PC) they are using has a surface tension of 20-22 N/mm, which is very low and does not provide enough polarity for paint adhesion.
The Protoform plastic has 67 N/mm, which is perfect.
Also, the density of the Titan PC varies considerable across the parts, which leads to areas that literally "reject" the paint.
After seeing these results, I added 2% Methyl Pyrollidone (water mixable solvent that attacks plastics) to the Fascolor/Createx paint and scuffed the PC with fine scotch brite
This together provided acceptable adhesion, but the PC quality, Titan is using for this body seems not very good.
The negative result is that you can't use chrome colors anymore since the show the scuff marks.
Btw, mould release agents on vacuum formed PC would be very unusual, but of course possible.
04-23-2010, 03:44 PM
#17
Tech Initiate
Salut Nico
je confirme ce que Maurice m'avait dit pour la RS4 plus stable sur la LAB-c01 que l'altis
essais effectué plusieurs fois le meme jour.
La nouvelle peinture qui remplace les boites neuves presque vides d'une marque tres connue aussi tient sans probleme sur cette carro
G
je confirme ce que Maurice m'avait dit pour la RS4 plus stable sur la LAB-c01 que l'altis
essais effectué plusieurs fois le meme jour.
La nouvelle peinture qui remplace les boites neuves presque vides d'une marque tres connue aussi tient sans probleme sur cette carro
G
04-25-2010, 11:54 PM
#18
Tech Initiate
Team titan realized the problem and have fixed it.
Luke
Luke
04-26-2010, 05:22 AM
#19
Yep, they did.
Great customer servicefrom Team Titan.
Now we can enjoy the superb handling of the body
Great customer servicefrom Team Titan.
Now we can enjoy the superb handling of the body
04-26-2010, 06:22 AM
#20
Is this the same body as Xceed/Orcan Audi, or is it different?
05-02-2010, 01:30 PM
#22
05-12-2010, 11:56 AM
#23
We have in stock the RS4. The problem on the lexan it's solved. Call your LHS or visit serpentamerica.com
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