I want know how the PDMS precursor liquids cross-link. Is there any initiator inside?
According to the MSDS the curing agent is a Dimethyl, methylhydrogen siloxane copolymer, i.e. it si an additiion curing system, where component A contains vinyl groups, component B contains Si-H gropus and the addition reaction is cataéysed by a Pt compound (usually hexachloro platinate). Th catalyst can be poisoned by nitrogen and sulfur compounds.
According to the MSDS the curing agent is a Dimethyl, methylhydrogen siloxane copolymer, i.e. it si an additiion curing system, where component A contains vinyl groups, component B contains Si-H gropus and the addition reaction is cataéysed by a Pt compound (usually hexachloro platinate). Th catalyst can be poisoned by nitrogen and sulfur compounds.
Dear Gyorgy,
Thank you for the kind answer, its very helpful for my understanding.
Pls find attached a more detailed explanation:
http://www.wacker.com/cms/media/publications/downloads/6709_en.pdf
what will happen if i add acid solution during curing? example, PDMS + H3PO4, mix and add curing agent, and thermal annealing..
Un-crosslinked chains can be toxic to biological cells. Using a solvent treatment (acetone, hexanes, etc.), my question is can pdms begin to crosslink by solvent mixture before it is cured by thermal annealing? Then obviously after.
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