zzzizxz wrote:tony.latham wrote:Latex doesn’t have the elasticity of poly.
Think about washboard roads and chuck holes and the normal vibration as your camper is towed at sixty-five.
There is a difference between a caulk and a sealant.
T
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I think I was incorrect when I called it caulk. Many reviews have called it caulk, but the DAP website (and the tube) calls it an exterior sealant, not an exterior caulk.
Although they seem to work very hard to NOT classify it as poly, silicone, latex, etc...
Interestingly, looking at the MSDS for the DAP, it uses limestone and quartz as fillers, which was what the OLD glidden gripper used. It also has carbon black, which seems to be basically a rubber product. I assume that's how they get the additional elasticity out of it. Don't know if that has any impact on anything though.
I wouldn't read too much, or any, meaning into the terms the marketing folks apply to these materials. They just infer end-uses.
>latex and poly..are the same thing. Latexes are comprised of polymers. No polymer..no latex.
>...difference between a caulk and a sealant. They are the same thing..caulks are meant to seal weather out. Sealants seal out weather by having great adhesive properties..so sealants can be adhesives and adhesives can be sealants. Which role they play depends on how you want to use them. Permanent sealant-adhesives, like 3M 5200, are reactive(crosslinking) materials with really great adhesive properties. This makes them VERY tough to remove and, by definition, they cannot dissolve in solvents. Typical "caulks" are not reactive..they are intended to seal weather out, only.
>...limestone and quartz fillers.. They are opacifiers that are much cheaper than titanium dioxide..no added real functionality.
?..carbon black.. In tire manufacturing it's a reactive filler, however in caulks, it's added as a black pigment..no added real functionality.