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Anonymous Poster

Influence of surface activation using titanium phosphate prior to Zn phosphate

05/18/2007 3:14 AM

Any one help me,

we r bonding rubber with metal surfaces,

that metal is treated before bonding

our processes

alkaline degreasing-Zn phosphating-Dipping in bonding agent-matal and rubber bonding

suggesion required for

alkaline degreasing-surface activation using titanium phosphate-Zn phosphating-Dipping in bonding agent-matal and rubber bonding

i would like to knoe the influence of titanium phosphate on rubber bonding process and chemical composition for surface activation process

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Anonymous Poster
#1

Re: Influence of surface activation using titanium phosphate prior to Zn phosphate

05/18/2007 11:15 PM

By using the titanium package prior to the zinc phosphate, the titanium actually helps promote more of a starting "landing conversion point site" for the zinc phosphate conversion coating on a clean part. This allows a more controlled formation of the zinc phosphate as compared to a larger yet fewer zinc crystal conversion coating on a application that would not use the titanium package. Zinc crystal deposition rate and quality of the conversion coating is greatly enhanced in most cases with a smaller denser conversion coat as compared to a larger irregular shaped conversion coat.

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#2
In reply to #1

Re: Influence of surface activation using titanium phosphate prior to Zn phosphate

05/19/2007 12:53 AM

Crap! This is pretty esoteric stuff! Do you work in plating? Do many customers try to plate metal over rubber?

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#3
In reply to #1

Re: Influence of surface activation using titanium phosphate prior to Zn phosphate

05/21/2007 7:17 AM

Guest

Are you saying that the Titanium provides more nucleation sites for the Zn to crystalize on and therefore the reaction will proceed quicker limiting the Zn Crystal size?

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