Talk:Vulcanization
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[edit] Devulcanization
The section needs to be cleaned up. The first and third paragraphs end with the same sentence, and the composition of the text is rather messy. - CannibalSmith 13:16, Wed June 1 2006 (EET)
Some of the history talk should probably be merged with Rubber...
The External link about the MesoAmericans is not working
This doesn't look very encyclopaediac. Needs to be re-written to sound less like a book for teenagers to interest them in science.
[edit] Vulcanized EPDM Scrap
www.geocities.com/epdmrecycle
This doesn't look very encyclopaediac. Needs to be re-written to sound less like a book for teenagers to interest them in science....mmmmmmm GEEK.
'Kipedia said vulcanized was the way to go. But I dang old knew better. Galvanized, galvanized, galvanized, that's what I always say!
[edit] History
I have extracted the following: -
'The history of vulcanized rubber goes back to prehistoric times. The name "Olmec" means "rubber people" in the Aztec language. Ancient Mesoamericans, spanning from ancient Olmecs to Aztecs, extracted latex from Castilla elastica, a type of rubber tree in the area. The juice of a local vine, Ipomoea alba, was then mixed with this latex to create an ancient vulcanized rubber as early as 1600 BC [1]!
Furthermore, the Aztecs and Mayans created a non-vulcanized rubber by extracting natural rubber latex from the Hevea brasiliensis trees in the local forests. They formed the latex into balls, and played the Mesoamerican ballgame with the resulting bouncy balls. The losers were sometimes ritually executed.
and
From these early days to'
Due to the fact the reference cited for these large claims was a document with NO academic value what so ever, it is merely a module outline for a course that claims the above, but does not give any citations as to it's state of claim. Thus, either find additional references (given the significance of the claim) or we'll leave it here in limbo until someone stumbles across something to reinsert it or extrapolate. 211.30.71.59 02:59, 26 October 2006 (UTC)
I put the first paragraph back in with a credible reference. Rgsmock 23:59, 28 March 2007 (UTC)
[edit] This is not vulcanization
The reference provided shows a particular type of processing of natural rubber that was known to Mesoamericans when Europeans arrived, not actual vulcanization. With this original processing, the rubber still became sticky when hot, brittle when cold, and was much less durable. Vulcanization refers specifically to the addition of sulfur under high heat. Prior to the addition of sulfur, rubber approaching modern properties of durability did not exist. It is not accurate to say the Mesoamericans had vulcanization since they did not add sulfur. What they had was a different method of stabilization that would be vastly inferior to actual vulcanization. —Preceding unsigned comment added by Hubbardaie (talk • contribs)
I changed the following statement:
"The history of vulcanized rubber goes back to prehistoric times." to "The history of processed rubber goes back to prehistoric times." —Preceding unsigned comment added by Hubbardaie (talk • contribs)
[edit] vulcanization is not synonymous with curing
After making the changing discussed immediately above, I reviewed the article further and find that this confusion is more deeply imbedded in this article. The entire first paragraph equates vulcanization with any type of curing of sulfur - which is not the case. Curing of rubber with some process has indeed been around for long before the Europeans discoved rubber, but the term vulcanization was coined specifically to refer to the curing process that involved the addition of sulfur at high temperatures. —Preceding unsigned comment added by Hubbardaie (talk • contribs)
The wikipedia article on rubber states this correctly: "While the ancient Mesoamericans did not have vulcanization, they developed organic methods of processing the rubber with similar results". Although the use of the word "similar" is loose here - since proper vulcanization makes a much more durable product - it is true that the ancient process improved the durability of natural rubber. —Preceding unsigned comment added by Hubbardaie (talk • contribs)
- We need to come to some agreement on this topic. The entry on curing is woefully inadequate. The vulcanization article is only applicable to sulfur curing as written. It is not clear in colloquial use tha vulcanization only refers to sulfur cures. Delmlsfan 00:48, 26 September 2007 (UTC)
[edit] Vulcanization IS Synonymous with Curing
I checked three sources: "the Vanderbilt Guide to Rubber Compounding"; Morton's "Rubber Technology"; and the Rubber Division's "Basic Rubber Compounding". In all three the word vulcanization is defined as curing (crosslinking) all types of rubber, not just sulfur cures. Vulcanization was indeed coined for sulfur crosslinking, but has expanded beyond its original definition. Delmlsfan 23:06, 26 September 2007 (UTC)
[edit] RTV
There appears to be no page detailing room-temperature vulcanization. The page RTV includes this as a meaning, but simply describes it in one sentence. Perhaps it should get its own page or else be described more here. —Ben FrantzDale (talk) 14:49, 14 January 2008 (UTC)
