Posts Tagged ‘Polymers’

PEX tubing prices and promotions

To get PEX tubing for low costs is not a difficult task. Even with no discount the prices for PEX tubing supply are considerably lower than prices for other materials used in piping. PEX tubing is thus cheaper than iron, and better than PVC due to its amazing resistance under pressure. PEX supply stores generally [...]

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Pipes metal-polymers

Age metal pipes are much younger than the pipe cross linked polyethylene. The first metal-plastic pipes produced little more than ten years ago in England. The conventional designation of metal pipes – PEX – AL – PEX. New Development – PE – RT – AL – PE – RT (PEX – polyethylene, PE – RT [...]

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PEX: Peroxide technology

Peroxides – some chemicals are activated with high temperatures, creating free radicals. The radical removes a hydrogen atom from the carbon atom in the chain of polyethylene, leaving the D-radical. This active molecule can connect with and form a similar relationship, ie crosslinks. The most popular peroxide – 2,5-dimethyl-2 ,5-di-(butylperoxy) hexane. At room temperature – [...]

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Durability of PEX materials to mold

This technique of accelerated laboratory tests designed to characterize the effect of mold on the properties of PEX materials. This method also allows to evaluate the effectiveness of antimicrobial additives introduced into the plastic. Test procedure is that the suspension is prepared spores from cultures that are most active when exposed to polymers. This method, [...]

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