Tasirin Matsalolin Heat akan Samfuran PVC: Juriya na zafi, Tsari, Bayyanawa

Wannan takarda ta bincika yadda masu daidaita zafi ke shafar samfuran PVC, suna mai da hankali kanzafi juriya, aiwatarwa, da kuma nuna gaskiya. Ta hanyar nazarin wallafe-wallafen da bayanan gwaji, muna nazarin hulɗar tsakanin masu daidaitawa da resin PVC, da kuma yadda suke tsara yanayin kwanciyar hankali, sauƙi na masana'antu, da kaddarorin gani.

1. Gabatarwa

PVC thermoplastic ne da ake amfani da shi sosai, amma rashin zaman lafiyar zafinsa yana iyakance aiki.Heat stabilizersrage lalacewa a babban yanayi kuma yana tasiri iya aiki da nuna gaskiya-mahimmanci ga aikace-aikace kamar marufi da fina-finai na gine-gine.

2. Juriya mai zafi na Stabilizers a cikin PVC

2.1 Hanyoyi na Tsayawa

Daban-daban stabilizers (gubar - tushen,alli - zinc, organotin) yi amfani da hanyoyi daban-daban:

Jagora - tushenYi amsa tare da labile Cl atom a cikin sarƙoƙi na PVC don samar da barga masu ƙarfi, hana lalacewa.
Calcium - zinc: Haɗa acid - ɗaure da radical - scavenging.
Organotin (tin methyl/butyl): Haɗa tare da sarƙoƙi na polymer don hana dehydrochlorination, da kyau murkushe lalacewa.

2.2 Ƙimar Ƙwararrun Ƙarfafa

Gwaje-gwajen Thermogravimetric (TGA) sun nuna organotin - PVC mai daidaitacce yana da mafi girman yanayin lalacewa fiye da tsarin calcium na gargajiya - tsarin zinc. Yayin da jagora – tushen daidaitawa yana ba da kwanciyar hankali na dogon lokaci a wasu matakai, abubuwan da suka shafi muhalli/lafiya suna hana amfani.

3. Tasirin Tsari

3.1 Narke Guda & Danko

Stabilizers suna canza halayen narkar da PVC:

Calcium - zinc: Yana iya ƙara narke danko, hana extrusion / allura gyare-gyare.
Organotin: Rage danko don santsi, ƙananan - sarrafa lokaci - madaidaici don manyan layin sauri.
Jagora - tushen: Matsakaicin narkewar kwarara amma kunkuntar tagogin sarrafawa saboda farantin - fitar da haɗari.

3.2 Lubrication & Sakin Mold

Wasu stabilizers suna aiki azaman mai mai:

Calcium – Tsarin zinc sau da yawa ya haɗa da man shafawa na ciki don inganta sakin ƙura a cikin gyare-gyaren allura.
Organotin stabilizers suna haɓaka PVC - dacewa da ƙari, yana taimakawa aiwatar da kai tsaye.

4. Tasiri kan Gaskiya

4.1 Haɗin kai tare da Tsarin PVC

Bayyana gaskiya ya dogara da tarwatsa stabilizer a cikin PVC:

To – tarwatse, ƙananan – barbashi alli – zinc stabilizers rage tarwatsa haske, kiyaye tsabta.
Organotin stabilizershaɗa cikin sarƙoƙi na PVC, rage ɓarna na gani.
Gubar - tushen stabilizers (manyan, ɓangarorin rarraba ba daidai ba) suna haifar da tarwatsa haske mai nauyi, rage bayyana gaskiya.

4.2 Nau'in Stabilizer & Bayyanawa

Nazarin kwatancen sun nuna:

Organotin - Fina-finan PVC masu ƙarfi sun kai> 90% watsa haske.
Calcium - zinc stabilizers suna samar da ~ 85-88% watsawa.
Gubar tushen stabilizers suna yin muni.

Lalacewa kamar "idanun kifi" (an ɗaure zuwa ingancin stabilizer / tarwatsawa) kuma yana rage tsabta-maɗaukaki - masu daidaitawa masu inganci suna rage waɗannan batutuwa.

5. Kammalawa

Heat stabilizers suna da mahimmanci don sarrafa PVC, daidaita juriya na zafi, aiwatarwa, da nuna gaskiya:

Jagora - tushenBayar da kwanciyar hankali amma fuskantar koma bayan muhalli.
Calcium - zinc: Eco - abokantaka amma yana buƙatar haɓakawa a cikin iya aiki / nuna gaskiya.
Organotin: Excel ta kowane fanni amma suna fuskantar matsalolin tsada/tsala a wasu yankuna.

Bincike na gaba yakamata ya haɓaka masu daidaitawa da daidaita ɗorewa, sarrafa ingancin aiki, da ingancin gani don biyan buƙatun masana'antu.