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Old 06-12-2015, 04:17 PM   #41
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I'm sure the others already know this stuff. I'm just repeating what I learned on a very basic level. And that is, there are two types of plastics. Thermo and thermoset. These can be used to describe paint films.

Also, there are two types of processes occuring during paint film formation. One is a conversion and the other is a non conversion. Epoxies are in the conversion catagory. Conversion coatings are typically more resistant to solvents then non conversion coatings.

It's been awhile since I took the SSPC coatings course, but that's what I learned. And none of my posts have been copied and pasted. I haven't even visited wikipedia.
I hope you guys know I was just kidding around. Basically saying everything I was reading was slightly beyond me.

It's been a long time since I took grade 13 chemistry, even the second time I took it.
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Old 06-12-2015, 04:23 PM   #42
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I hope you guys know I was just kidding around. Basically saying everything I was reading was slightly beyond me.

It's been a long time since I took grade 13 chemistry, even the second time I took it.
You might want to explain the whole Grade 13 part, especially for our members unfamiliar with the former educational system in ON.
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Old 06-12-2015, 04:29 PM   #43
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I hope you guys know I was just kidding around. Basically saying everything I was reading was slightly beyond me.

It's been a long time since I took grade 13 chemistry, even the second time I took it.
I think what happened was a basic point developed into a search for an absolute truth on the matter. And as I stated before, I am far from being competent as a coating expert, in terms of chemical cross linking, and other processes that help form a paint film. That's why I try to be careful not to plagiarize the internet to present myself like I'm an expert.

I was just trying to point out the difference in thermo plastics verses thermoset plastics and how one might be affected more by the heat generated from a high speed sander as opposed to the other. Especially, since a lot of exterior house paints are considered a form of thermo plastic.

But I can accept that things have changed and there are no diferences between the two. It's all an illusion anyways.

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Old 06-12-2015, 04:29 PM   #44
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You might want to explain the whole Grade 13 part, especially for our members unfamiliar with the former educational system in ON.
Used to have to go to grade 13 in high school if you had any intention whatsoever of being able to go to university. Then they changed it to OAC (Ontario Academic Course), but I think they've changed it again since then.

My nephew tried to explain it to me a couple of years ago when he was graduating, but seeing as how he was still a teenager I was barely listening.
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Old 06-12-2015, 04:55 PM   #45
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Used to have to go to grade 13 in high school if you had any intention whatsoever of being able to go to university. Then they changed it to OAC (Ontario Academic Course), but I think they've changed it again since then.

My nephew tried to explain it to me a couple of years ago when he was graduating, but seeing as how he was still a teenager I was barely listening.
IIRC, they dropped the OAC around 2003, AKA the year of the "double cohort". Two years of students graduated secondary school that year, overloading the post-secondary system.
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Old 06-12-2015, 05:06 PM   #46
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IIRC, they dropped the OAC around 2003, AKA the year of the "double cohort". Two years of students graduated secondary school that year, overloading the post-secondary system.
Can't imagine what your required high school average had to be that year to get in to university. Wow, must have gone through the roof.
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Old 06-12-2015, 05:14 PM   #47
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Can't imagine what your required high school average had to be that year to get in to university. Wow, must have gone through the roof.
I guess there was a Double Cohort Echo in 2007, when they all graduated university and started looking for work.
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Old 06-12-2015, 05:32 PM   #48
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I think what happened was a basic point developed into a search for an absolute truth on the matter. And as I stated before, I am far from being competent as a coating expert, in terms of chemical cross linking, and other processes that help form a paint film. That's why I try to be careful not to plagiarize the internet to present myself like I'm an expert.

I was just trying to point out the difference in thermo plastics verses thermoset plastics and how one might be affected more by the heat generated from a high speed sander as opposed to the other. Especially, since a lot of exterior house paints are considered a form of thermo plastic.

But I can accept that things have changed and there are no diferences between the two. It's all an illusion anyways.
I hope you don't think I'm disagreeing that there's a difference between the two, as there surely is. I'm just curious about the science behind it. I hope you don't think I'm trying to present myself as an expert or plagiarizing, either; I'll certainly admit to having looked for some scholarly articles to back up my prior knowledge on the subject, but I try not to discuss anything I don't have a fair working understanding of. At any rate, I'll let it be now. It wouldn't be the first time my curiosity'd gotten the better of me.
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Old 06-12-2015, 06:40 PM   #49
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I hope you don't think I'm disagreeing that there's a difference between the two, as there surely is. I'm just curious about the science behind it. I hope you don't think I'm trying to present myself as an expert or plagiarizing, either; I'll certainly admit to having looked for some scholarly articles to back up my prior knowledge on the subject, but I try not to discuss anything I don't have a fair working understanding of. At any rate, I'll let it be now. It wouldn't be the first time my curiosity'd gotten the better of me.
I'm actually pretty comfortable with my basic knowledge of thermo and thermo set plastics, along with the process associated with conversion and non conversion coatings. I know enough to have kept me out of trouble over the many years of applying both.
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Old 06-12-2015, 06:46 PM   #50
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This post was worth it for this word alone!
Dissolvisation: The process by which an Alka Seltzer tablet eventually disappears when placed in a glass of water.
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Old 06-12-2015, 06:53 PM   #51
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Some of you guys never fail to impress me while enlightening me. I feel like I should be paying tuition.

I must admit reading things like ionic and covalent bonds gave me unhappy memories. I'll be impressed when you can incorporate Avogadro's number into this discussion in a meaningful way. And don't neglect the periodic table of the elements.
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Old 06-12-2015, 06:55 PM   #52
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I'm actually pretty comfortable with my basic knowledge of thermo and thermo set plastics, along with the process associated with conversion and non conversion coatings. I know enough to have kept me out of trouble over the many years of applying both.
I hope you don't think I was casting any doubt on that, either. You're clearly one of the most educated people on this forum, and I'm just a new comer to the trade after all. If my responses to you stepped on your toes, I apologize. It's not often I get the chance to discuss topics this interesting (yes, I'm serious) with other intelligent people.
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Old 06-12-2015, 07:13 PM   #53
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I hope you don't think I was casting any doubt on that, either. You're clearly one of the most educated people on this forum, and I'm just a new comer to the trade after all. If my responses to you stepped on your toes, I apologize. It's not often I get the chance to discuss topics this interesting (yes, I'm serious) with other intelligent people.
HERE??
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Old 06-12-2015, 07:16 PM   #54
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I hope you don't think I was casting any doubt on that, either. You're clearly one of the most educated people on this forum, and I'm just a new comer to the trade after all. If my responses to you stepped on your toes, I apologize. It's not often I get the chance to discuss topics this interesting (yes, I'm serious) with other intelligent people.
No problem. It's just like the business talk that takes place here. As a member who likes to participate in discussions, I have a limited knowledge before my contributions become useless opinions. So I absolutely respect and enjoy your knowledge as a paint supplier and contributing member. And, I respect Gough's contributions as Galactic Lord of Infinite knowledge and How it Applies to Law/ Internet Librarian.

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Old 06-12-2015, 07:20 PM   #55
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No problem. It's just like the business talk that takes place here. As a member who likes to participate in discussions, I have a limited knowledge before my contributions become useless opinions. So I absolutely respect and enjoy your knowledge as a paint supplier and contributing member. And, I respect Gough's contributions as Galactic Lord of Infinite knowledge and How it Applies to Law/ Internet Librarian.


As do I CA Painter, as do I.
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Old 06-12-2015, 07:56 PM   #56
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Believe me, I wish I could remember the more important things, like where I left my keys.
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Old 06-12-2015, 09:08 PM   #57
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Ya no, it's peeps lik u woo give payntrs bad reps.



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Old 06-12-2015, 11:20 PM   #58
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Poor, poor Vinnie. 5 posts in his pocket, courage up to start a thread, and this is where it leads. How many replies in did he just go back to blasting away with his water cannon?

And who's more pissed with their job this week, our man Vinnie or newbie AppleJack?

Me, I'm just glad I won't be hanging off an extension ladder this weekend like I was all week.
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Old 07-27-2015, 07:22 PM   #59
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You could make better time with one of these,

http://www.dewalt.com/tools/woodwork...dwe6401ds.aspx

About three times faster than an orbital, and this one costs less than $100.

Takes a little getting used to how aggressive it is, but this thing will take some paint off quick.
I know this old post but we still use my Makita random orbitals both about 25 yrs old still going strong. The paint store I do business with carry a wide variety of supplies still for this tool. Have never tried the dewalt but thanks for the link.
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Old 07-27-2015, 08:12 PM   #60
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I think my IQ just raised a couple of points after reading this thread. Thanks guys!

Last edited by silverhw; 07-27-2015 at 08:24 PM..
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