Re: [ATM] RE: RTV Silicone question

[Mark Holm <mdholm@telerama.com>]

Hi Jule,

Thanks for the very informative message on silicone RTV.  Perhaps you 
can answer some other questions.

In the adhesion application, would it be worth searching out products 
with less or no fumed silica?  I realize that fumed silica actually 
strengthens silicone, but for use as an adhesive, many measures of 
strength are not so important.  Peel strength is the big issue.

Do the methanol cure RTV silicones need water like the acetic acid versions?

One of the methanol cure products has been recommended as a superior 
glass bonding agent.  What are the pluses and minuses of these products?

 Is there a way to get the water to the silicone despite bonding to 
impervious materials?

When used as an adhesive, in a thin layer between two impervious 
materials, what is the maximum size that one should allow in order to 
let water diffuse in to effect the cure?

When bonding two impervious materials, should one wait longer than usual 
before applying a load, in order to give water time to diffuse in and 
the cross linking time to occur?

Will glass bond better if the surface is rough as from grinding, or 
smooth?  How about metals and other non metals?

Thanks,

Mark Holm
mdholm@telerama.com


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