Polycarbonate Exposure to Methane

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Gustavo Navarrete Participant Join Date: Nov 2011 Posts: 4	Polycarbonate Exposure to Methane 05/18/2012 4:49 PM
	Hello, I have not find information of how is the performance of polycarbonate when is exposed to Methane (Natural gas). this is for filters application. Do you have a site where I can find infor about it?
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: Polycarbonate exposure to Methane 05/18/2012 5:29 PM
	This site says it is good. Not excellent. PC is very prone to stress cracking. Molded parts have lots of stress built in to them. [PDF] Chemical Resistance of Polycarbonate Sheet - palramhort.com Chemical Resistance Chart and Plastic Material Selection Guide Molded parts will have to be tested. Your material supplier is a better source of this type of information. Talk to your material supplier. We can't give you answers beyond what is on the web. I say it's not the best choice. Does it have to be transparent? How to Search the Internet Effectively
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bubbapebi Power-User Join Date: Apr 2007 Posts: 414 Good Answers: 19	#2 In reply to #1 Re: Polycarbonate exposure to Methane 05/19/2012 12:27 AM
	*SPS Corporation, a greenhouse glazing supplier (first link) lists polycarbonate as resistant to methane at room temperature. Incidentally, that company's home page comes with a warning from Google. The PDF download wasn't flagged, however. Miller Plastic Products* (second link) recommends that polycarbonate not be exposed to methane. So if the exposure is going to be long-term, or at other than room temperature, polycarbonate is probably not the best material for this application.
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welderman Guru Join Date: Sep 2007 Posts: 1601 Good Answers: 58	#3 Re: Polycarbonate Exposure to Methane 05/19/2012 9:22 AM
	Polycarbonates are resistant to most vapors until they are exposed to UV (sunlight). This combination will accelerate stress cracking.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: Polycarbonate Exposure to Methane 05/21/2012 3:51 AM
	Don't do it. Use something else. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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bubbapebi (1); lyn (1); PWSlack (1); welderman (1)

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