Katoa ra whakamahi tatou hua i hanga i pvc. He aha te mea tenei taonga?

Me mea te reira kia e e kia tino fiemālie, kahore pvc ora hou. He aha te mea te reira mo te ōhanga hou? e ki runga ki te 15 kirokaramu o te katoa taimaha o te motokā toharite Pākehā, whai wāhi kōrero o pvc tenei ra ko tenei rauemi i roto i te hanga o taonga kiritaki (pōro, kakahu, hū, taonga, uhi o te papa, kāri nama, me ētahi atu)

Medicine hoki neke atu i te hawhe te rau tau whakamahi hoki pvc. He aha te mea e taea te kite i te reira na roto i te kōrero ki maha kotahi-whakamahi taputapu. Hea e taea e kitea e koe i te pōkai mo papa, potae, karapu hāparapara, catheters, whakaaro mo te kai, peke toto. āhuatanga tēnei rauemi e utu iti, kua pai te whakakapi te rapa me te karaihe, ngāwari oneone, e taea te whakamahi i te reira i roto i te tinana tangata.

Ki te titiro tatou ki nga mea e te hunga i roto i to tatou kāinga, he tokomaha o ratou e hoki hanga o pvc. He aha te mea e taea e te reira? Ko maha Polyvinyl pūhaumāota te pūtake mo te mātao hiko, putorino, pūkete matapihi, taonga tākaro, rauemi tākai, waea pūkoro, ipu kirihou, korere mo kirīmi me te nui atu.

He aha te whakatau he whānui pvc? He aha te mea te reira ki te mata matū o tirohanga? E ai ki te tātai (-CH2-CHCl-) i roto i te tohu n (tohu o te waerau) pvc ko te waerau waihanga e no ki te turanga, me te e whakaputaina i māota me te hinu (57 me 43 ōrau aua). e ti'aturi i runga i kai o ngā hua hinu, e hanga te tuku o tenei pai rauemi me tona utu tukanga Production i iti iho i te hawhe - iti.

Polyvinyl i roto i te ahua ko te taonga paura ma ki ngā āhuatanga uruhanga pai. Ko reira koreami me akeake, rewakore i roto i te wai, ātete ki te hāora, hei painga rauhanga (e tika ana ki te māota i roto i te hanganga), ātete ki te waikawa, hinu kohuke, kawakore, waiwaihā. A, no te tahu ki te 100 nekehanga C. rawa decomposes hauwai pūhaumāota whakaoranga.

tīmata pvc Hanga ki te tangohanga o te otinga tote konutai pūhaumāota (i te mahi o te rere hiko). I roto i te whakarara, te hinu tangohia i ethylene (he tukanga i huaina "hangai"). Hili iá, māota me te ethylene ngā tukua o ethylene dichloride. I roto i te tahuri hanga dichloride, vinyl pūhaumāota (waetahi), ka e i tahuri i roto i te polymerization ki te taonga e hiahiatia ana. E tapiritia ki tenei ngā wāhanga, tuku ki te whiwhi i te hua oti ki etahi āhuatanga mo te rāngai hāngai.

Pvc kaihanga whakamahi toru tikanga taketake mo te polymerization o poraka waetahi, whakatārewatanga me te whakaehunga. I roto i tenei whakatārewatanga e whakamahia ki te whiwhi ngohengohe, āhua-mārō, me te mārō kirihou, me te whakaehunga - mō ngā hua ngohengohe whiwhi i roto i plastisols. Tei runga i te ngaro aroaro o plasticizers i roto i te hanganga ranei kua tukua, aua unplasticized me te rauemi plasticized. Ko te tuatahi ko te iti ātete ki te pāmahana iti (ki runga, ki, haunga te 15 nga nekehanga C), me te tuarua te tu meangiti ki te -60 nekehanga. I teie mahana, te raruraru rû roa ki enei matū ko to ratou kohinga me te tukurua.