TPR Thermoplastic Rubber
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Re: TPR Thermoplastic Rubber
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Posted by: k_rg ® 02/04/2007, 04:28:27 Author Profile eMail author Edit

Rubber - whether natural or synthetic, has a long coiled polymer chain. For putting the material to best use-to get good strength, age, oil, oxidation resistance, we must mix the rubber with a vulcanising chemical, which will crosslink the polymeric chains. In TPE or TPR, these chains are already crossbound by physical aggregation or domains which prevent the chains from slipping past each other. On heating these hard domains yield allowing the polymer to flow like a plastic which can be made to fill a mold. On cooling, the TPE solidifies again into a hard mass. Like plastics, the material can be repeatedly heated to flow and cooled till they are thermally decomposed. TPEs are man made to have these "block" sections in the polymer. R.Gopal

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Re: TPR Thermoplastic Rubber
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Posted by: Kelly Bramble ® 10/19/2006, 21:36:32 Author Profile eMail author Edit

ThermoPlastic Rubber TPR is best described a material which has both the characteristics of rubber and plastic. Typical applications are the hard rubber/plastic soles on many shoes or the the rubber/plastic material used on hane tool grips. ThermoPlastic Elastomer (TPE) are a softer version of TPR. TPEs permit fabrication of "rubber-like" articles with the speed, efficiency, and economy of injection molding, extrusion, or blow molding. This material is typically used where flexibility and soft-touch is desired in the application.

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