Re: Tire patch failure

On 6/4/2024 1:06 PM, Catrike Ryder wrote:

 I collected two old leaky tire tubes and proceeded to patch them. I've
patched many tire and never had any problems. The patches all leaked
and I discovered I could pull them off.  I patched them again and
pulled them off again. The patches were labeled "Thumbs Up," made in
China, and came in a large quantity. The tubes were Continental.  Has
anyone else used these patched or had this problem. At any rate,
beware what I believe is a faulty product.
  

Can't comment on whatever product you have there but the chemistry of good patching systems (Tech,  Rema) is zinc-rich to make a very strong bond known as 'cold vulcanization'.
https://techtirerepairs.com/company/
Things which look a lot like patches may lack actual capacity for a good bond.
BTW it's a patching system- cleaner, cement and patch formulated to make cross linked bonds together.
Further to that:
https://www.semanticscholar.org/paper/Zinc-Based-Curing-Activators%3A-New-Trends-for-Zinc-Mostoni-Milana/671465bfbffb17da58903f8bf374a0479727c81b
--
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971