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Silicone And Cable
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<blockquote data-quote="gembrain" data-source="post: 355945" data-attributes="member: 23481"><p>I did a bit of trawling around and it appears that acetic acid in sufficient strength will interact with PVC such that the plasticiser is replaced by the acid and (assumedly) the PVC sheath then becomes brittle or breaks down.</p><p></p><p>Acetoxy sealants release acetic acid while curing. Neutral cure sealants only release methanol.</p><p></p><p>I'm somewhat sceptical that sufficient strength acid would be released to make much difference to cable sheath but a neutral cure apparently avoids any potential problems.</p><p></p><p>R391 super gunk sounds like overkill to seal a hole round a wire <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>Cheers all.</p></blockquote><p></p>
[QUOTE="gembrain, post: 355945, member: 23481"] I did a bit of trawling around and it appears that acetic acid in sufficient strength will interact with PVC such that the plasticiser is replaced by the acid and (assumedly) the PVC sheath then becomes brittle or breaks down. Acetoxy sealants release acetic acid while curing. Neutral cure sealants only release methanol. I'm somewhat sceptical that sufficient strength acid would be released to make much difference to cable sheath but a neutral cure apparently avoids any potential problems. R391 super gunk sounds like overkill to seal a hole round a wire :) Cheers all. [/QUOTE]
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