Menene bambanci tsakanin kayan PVC da kayan Eva?

Tare da ci gaban zamani a hankali, rayuwar mutane ta canza da yawa, kuma amfani da sabbin kayayyaki daban-daban ya ƙara yaɗuwa. Alal misali, PVC da kumaEVAAna amfani da kayan musamman a cikin rayuwar yau, amma yawancin mutane cikin sauƙi suna ruɗa su. . Na gaba, bari mu fahimci bambanci tsakanin PVC da kayan Eva.

1. Siffa da siffa daban-daban:
PVC a babban yankin kasar Sin za a iya raba iri biyu: low-mai guba da muhalli da kuma mara guba da muhalli. Kayan EVA duk kayan da basu dace da muhalli ba. Tsarin EVA yana da taushi; Ƙarfin ƙarfinsa ya fi na PVC ƙarfi, kuma yana jin m (amma babu manne a saman); yana da fari da kuma m, kuma m High, da ji da kuma jin suna sosai kama da PVC fim, don haka ya kamata a biya hankali don bambanta su.

2. Hanyoyi daban-daban:
PVC resin thermoplastic polymerized ta vinyl chloride ƙarƙashin aikin mai ƙaddamarwa. Yana da homopolymer na vinyl chloride. Vinyl chloride homopolymer da vinyl chloride copolymer ana kiransu tare da guduro vinyl chloride. PVC ta kasance mafi yawan ƙera robobi na gaba ɗaya a duniya kuma ana amfani da su sosai. Tsarin kwayoyin halitta na EVA (ethylene vinyl acetate copolymer) shine C6H10O2 kuma nauyin kwayoyinsa shine 114.1424. Ana amfani da wannan abu azaman fina-finai iri-iri, samfuran kumfa, adhesives mai narkewa mai zafi da masu gyara polymer.

3. Taushi daban-daban da taurin: Launin halitta na PVC ɗan rawaya ne, mai haske da haske. Gaskiyar ita ce mafi kyau fiye da polyethylene da polystyrene, amma mafi muni fiye da polystyrene. Dangane da adadin additives, an raba shi zuwa polyvinyl chloride mai laushi da wuya. Samfura masu laushi suna da sassauƙa da tauri kuma suna jin ɗanɗano, yayin da samfura masu ƙarfi suna da tauri mafi girma fiye da ƙarancin ƙarancin polyethylene. , kuma ƙasa da polypropylene, farar fata zai faru a wurin inflection. EVA (etylene vinyl acetate copolymer) ya fi PVC laushi.

4. Farashin sun bambanta:
Kayan PVC: Farashin kowace ton yana tsakanin yuan 6,000 zuwa 7,000. Kayan EVA suna da kauri da farashi daban-daban. Farashin yana kusan 2,000/mita cubic.

5. Halaye daban-daban:
PVC yana da kyawawan kaddarorin wutar lantarki, ana iya amfani da su azaman abin rufewa mara ƙarfi, kuma kwanciyar hankalin sinadarai shima yana da kyau. Saboda rashin kwanciyar hankali na thermal polyvinyl chloride, dumama na dogon lokaci zai haifar da bazuwa, sakin gas na HCl, da canza launin polyvinyl chloride. Don haka, kewayon aikace-aikacen sa yana da kunkuntar, kuma yawan zafin jiki na amfani yana tsakanin -15 zuwa 55 digiri. EVA yana da ƙarfi a zafin jiki. Idan ya yi zafi sai ya narke zuwa wani wuri kuma ya zama ruwa mai iya gudana kuma yana da ɗan ɗanko.