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#1
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Brittle, Dried Out Plastic
Hello, all, and my question deals with plastic/rubber materials as used
on athletic shoes and growing brittle with age even with non-use. I recently unboxed a NOS pair of Etonic running shoes that I purchased about 15 years ago. After I ran in them a couple of times the plastic sides and heel split about half way across exposing the inner foam padding material. Could I have coated/soaked the outer material in something to prevent or discourage this cracking/splitting? Or is the material just too dried out to resurrect? (I've had similar issues with aged/dried out adhesives but this is different.) Thanks for your time and comment. Sincerely, -- J. B. Wood e-mail: |
#2
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Brittle, Dried Out Plastic
On 1/23/2018 6:37 AM, J.B. Wood wrote:
Hello, all, and my question deals with plastic/rubber materials as used on athletic shoes and growing brittle with age even with non-use.Â* I recently unboxed a NOS pair of Etonic running shoes that I purchased about 15 years ago.Â* After I ran in them a couple of times the plastic sides and heel split about half way across exposing the inner foam padding material.Â* Could I have coated/soaked the outer material in something to prevent or discourage this cracking/splitting?Â* Or is the material just too dried out to resurrect?Â* (I've had similar issues with aged/dried out adhesives but this is different.)Â* Thanks for your time and comment.Â* Sincerely, Unfortunately it is a normal aging process due to oxidation. It depends on the type of plastic of course and rubbers are more susceptible. Antioxidants retard degradation and can work fairly well if designed properly. I recall buying cheap bicycle tires that degraded in a year with practically no use at all. Once degradation has set in there is nothing to stop it. |
#3
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Brittle, Dried Out Plastic
On Tuesday, January 23, 2018 at 7:19:17 AM UTC-5, Frank wrote:
On 1/23/2018 6:37 AM, J.B. Wood wrote: Hello, all, and my question deals with plastic/rubber materials as used on athletic shoes and growing brittle with age even with non-use.Â* I recently unboxed a NOS pair of Etonic running shoes that I purchased about 15 years ago.Â* After I ran in them a couple of times the plastic sides and heel split about half way across exposing the inner foam padding material.Â* Could I have coated/soaked the outer material in something to prevent or discourage this cracking/splitting?Â* Or is the material just too dried out to resurrect?Â* (I've had similar issues with aged/dried out adhesives but this is different.)Â* Thanks for your time and comment.Â* Sincerely, Unfortunately it is a normal aging process due to oxidation. It depends on the type of plastic of course and rubbers are more susceptible. Antioxidants retard degradation and can work fairly well if designed properly. I recall buying cheap bicycle tires that degraded in a year with practically no use at all. Once degradation has set in there is nothing to stop it. +1 AFAIK, when it's deteriorated like that, nothing you can do. |
#4
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Brittle, Dried Out Plastic
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#5
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Brittle, Dried Out Plastic
In article ,
"J.B. Wood" wrote: Hello, all, and my question deals with plastic/rubber materials as used on athletic shoes and growing brittle with age even with non-use. I recently unboxed a NOS pair of Etonic running shoes that I purchased about 15 years ago. After I ran in them a couple of times the plastic sides and heel split about half way across exposing the inner foam padding material. Could I have coated/soaked the outer material in something to prevent or discourage this cracking/splitting? Or is the material just too dried out to resurrect? (I've had similar issues with aged/dried out adhesives but this is different.) Thanks for your time and comment. Sincerely, J. B.- A chemist should give you a better answer. I suggest you do a search on "plasticizer", a chemical added to some materials to improve their flexibility. I understand the plasticizer can dry out or migrate away from the material with age, resulting in the effect you noticed. If the material can be resurrected, it might be by soaking or painting it with a plasticizer. To me, it would be more trouble than it is worth. Fred |
#6
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Brittle, Dried Out Plastic
In alt.home.repair, on Tue, 23 Jan 2018 06:37:42 -0500, "J.B. Wood"
wrote: Hello, all, and my question deals with plastic/rubber materials as used on athletic shoes and growing brittle with age even with non-use. I recently unboxed a NOS pair of Etonic running shoes that I purchased about 15 years ago. After I ran in them a couple of times the plastic sides and heel split about half way across exposing the inner foam padding material. Could I have coated/soaked the outer material in something to prevent or discourage this cracking/splitting? Or is the Maybe if you did it 15 years ago it would have helped. But it would be hard to cover every spot of it. material just too dried out to resurrect? You'd have to check with a priest, but I don't think many materials can be resurrected. (I've had similar issues with aged/dried out adhesives but this is different.) Thanks for your time and comment. Sincerely, I used to buy shoes that were very comfortable from the moment you first put them on, like slippers, with leather uppers and plastic soles. Once I went to a wedding in Europe, got there only 8 hours before the wedding and found that the heels of the shoes were falling apart in big chunks. Maybe I'd stepped in a solvent? Had to take a taxi to a store and buy shoes in 10 minutes, take a taxi back, in order not to be late to the wedding. |
#7
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Brittle, Dried Out Plastic
On 01/23/2018 10:22 AM, Fred McKenzie wrote:
A chemist should give you a better answer. I suggest you do a search on "plasticizer", a chemical added to some materials to improve their flexibility. I understand the plasticizer can dry out or migrate away from the material with age, resulting in the effect you noticed. As an aside, the 'new car smell' and the film on the inside of the windshield even if you do not smoke comes from the plasticizers migrating out of the materials. |
#8
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Brittle, Dried Out Plastic
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#9
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Brittle, Dried Out Plastic
Im old enough to remember when that didnt happen because the materials that were used had more rubber or copper etc. Now that were letting S€¦hole China make all of that theyre stingy with the such materials. |
#10
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Brittle, Dried Out Plastic
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