Ibicuruzwa bya PVC byarangiye bikoreshwa mu nganda zitandukanye. Isuzuma nogupima PVC calcium zinc stabilisateur bisaba uburyo butandukanye bitewe nibikorwa byabo. Muri rusange, hari uburyo bubiri bwingenzi: static na dinamike. Uburyo buhamye burimo uburyo bwo gupima impapuro zitukura za congo, ikizamini cyo mu ziko gishaje, hamwe nuburyo bwo gukoresha ingufu za electromotive, mugihe uburyo bwa dinamike burimo ibizamini bya torque rheometer hamwe na test ya double roll test.
1. Uburyo bwo gupima impapuro zitukura za congo
Ukoresheje ubwogero bwamavuta hamwe na glycerol yubatswe, PVC igomba gupimwa ivangwa neza hamwe na stabilisateur yubushyuhe igashyirwa mumashanyarazi mato. Ibikoresho biranyeganyezwa gato kugirango bikomere, hanyuma bigashyirwa mubwogero bwamavuta. Ubushyuhe bwa glycerol muri PVC calcium zinc stabilisateur yamavuta yashyizweho mbere ya 170 ℃, kuburyo hejuru yububiko bwibikoresho bya PVC mumiyoboro ntoya yipimisha buringaniye hamwe nubuso bwa glycerol. Hejuru yigituba gito cyipimisha, hashyizwemo icyuma gifite ikirahure cyoroshye, kandi ikirahuri kiragaragara kuva hejuru kugeza hasi. Impapuro zitukura za congo zizunguruka hanyuma zinjizwa munsi yigitereko cyikirahure, kuburyo impande zo hepfo yimpapuro zitukura za congo ziri nko kuri cm uvuye kuruhande rwo hejuru rwibikoresho bya PVC. Nyuma yubushakashatsi butangiye, andika igihe uhereye igihe ikizamini gitukura cya congo gishyizwe mumiyoboro yikizamini kugeza igihe gihindutse ubururu, aricyo gihe cyo gutuza ubushyuhe. Igitekerezo cyibanze cyubu bushakashatsi nuko PVC izangirika vuba mubushyuhe bwa 170 but, ariko kubera kongeramo stabilisateur yubushyuhe, kubora kwayo birabujijwe. Igihe nikigera, stabilisateur yubushyuhe izakoreshwa. Iyo ibicuruzwa birangiye, PVC izahita ibora kandi irekure gaze ya HCl. Muri iki gihe, reagent itukura ya congo mu kizamini cya test izahindura ibara bitewe nuburyo bworoshye na HCl. Andika igihe muri iki gihe kandi urebe imikorere ya stabilisateur yubushyuhe ukurikije uburebure bwigihe.
Ikizamini cya feri ihagaze
Tegura umuvuduko wihuse wintangarugero yifu ya PVC nibindi bikoresho bifasha gutunganya (nka lubricants, modifiseri, impinduka, nibindi) wongeyeho PVC calcium zinc stabilisateur. Fata urugero runaka rwicyitegererezo cyavuzwe haruguru, ongeramo stabilisateur zitandukanye kuri PVC calcium zinc stabilisateur ya PVC mukigereranyo runaka, vanga neza, hanyuma wongereho kuvanga inkoni ebyiri
Gutegura ibice byikizamini kuri mixer muri rusange bikorwa nta kongeramo plastike. Ubushyuhe bubiri bwashyizwe kuri 160-180 ℃, kandi iyo wongeyeho plasitike, ubushyuhe bwumuzingo buri hafi 140 ℃. Mugukanda inshuro nyinshi ukoresheje inkoni ebyiri, haboneka icyitegererezo cya PVC, hanyuma hagakurikiraho gukata kugirango ubone ingero za PVC z'ubunini runaka zirimo stabilisateur zitandukanye. Shira ibice bitandukanye bya PVC kubikoresho byagenwe hanyuma ubishyire mubushyuhe buhoraho (mubisanzwe 180 ℃). Andika ibara ryibice byibizamini buri minota 10 cyangwa iminota 15 kugeza bihindutse umukara.
Binyuze mu bizamini byo gusaza kw'itanura, imikorere yubushyuhe bwa PVC itajegajega irashobora kugenwa, cyane cyane ubushobozi bwabo bwo guhagarika ibara. Muri rusange abantu bemeza ko iyo PVC ishyutswe, ibara rizajya rihinduka kuva murumuri ujya mwijimye, harimo n'umuhondo wera wijimye wijimye wijimye. Ibihe byo gutesha agaciro bishobora kugenwa nibara rya PVC mugihe runaka.
3. Uburyo bushoboka bw'amashanyarazi (uburyo bwo kuyobora)
Igikoresho cyubushakashatsi kigizwe ahanini nibice bine. Uruhande rwiburyo nigikoresho cya gaze ya inert, ubusanzwe ikoresha azote, ariko rimwe na rimwe ikanahumeka. Itandukaniro ni uko iyo ukoresheje azote, PVC calcium zinc stabilisateur irashobora kwirinda kwangirika kwiminyururu yababyeyi ya PVC iterwa na okisijeni ya ogisijeni mu kirere. Igikoresho cyo gushyushya ubushakashatsi ni ubwogero bwamavuta hafi 180 ℃. Uruvange rwa PVC na stabilisateur rushyirwa mubwogero bwamavuta. Iyo gaze ya HCl ikozwe, izinjira igisubizo cya NaOH kuruhande rwibumoso hamwe na gaze ya inert. NaOH yakira vuba HCl, itera pH agaciro k'igisubizo guhinduka. Mu kwandika impinduka za metero ya pH mugihe, ingaruka za stabilisateur zitandukanye zirashobora kugenwa. Mubisubizo byubushakashatsi, pH t umurongo wabonetse mugutunganya igabanijwemo igihe cyo kwinjiza nigihe cyo gukura, kandi uburebure bwigihe cyo kwinjiza buratandukana nuburyo bwiza bwo guhagarika ubushyuhe.
4. Torque rheometero
Torque rheometero nigikoresho gisanzwe gito kigereranya gutunganya nyabyo PVC. Hano hari agasanduku gafunze gutunganyirizwa hanze yicyuma, kandi ubushyuhe bwibisanduku bitunganyirizwa hamwe n umuvuduko wibice bibiri byimbere bishobora kugenzurwa hifashishijwe mudasobwa ihujwe nigikoresho. Ubwinshi bwibintu byongewe kuri torque rheometero muri rusange ni 60-80 g, bigenda bitandukana ukurikije ibikoresho bitandukanye. Intambwe zigeragezwa nizi zikurikira: tegura masterbatch irimo stabilisateur zitandukanye zitandukanye, kandi formulaire ya masterbatch muri rusange irimo ACR hiyongereyeho PVC CPE 、 CaCO3 、 TiO 、 Amavuta, nibindi. Iyo igeze ku bushyuhe bwagenwe kandi umuvuduko uhagaze, imvange yapimwe yongewe kumasanduku yo gutunganya, ifunga vuba, kandi ibipimo bitandukanye kuri mudasobwa ihujwe byandikwa, aribyo umurongo wa rheologiya. Nyuma yo gutunganywa, ibintu bitandukanye bigaragara mubikoresho byakuweho nabyo birashobora kuboneka, nk'umweru, niba byarakozwe, byoroshye, nibindi. Ukoresheje ibyo bipimo, ubushobozi bwinganda za stabilisateur ihuye burashobora kugenwa. Ubushyuhe bukwiye bugomba kuba bufite umwanya wa torque na plastike, kandi ibicuruzwa bigomba gukorwa neza hamwe byera kandi hejuru. Torque rheometero yubatse ikiraro cyoroshye hagati yubushakashatsi bwa laboratoire n’inganda nini nini.
5. Ikizamini cyikubye kabiri
Nubwoko bwuburyo bwingirakamaro bwo gupima byimazeyo ingaruka ziterwa na stabilisateur yubushyuhe, dinamike zibiri zikoreshwa mugihe habuze rheometero, kandi ibikoresho bibiri byerekana imashini byatoranijwe byatoranijwe mubigeragezo. Ongeramo ifu yihuta ivanze muri yo hanyuma ukande muburyo. Gusubiramo inshuro nyinshi icyitegererezo. Kugeza igice cyikizamini gihindutse umukara, andika igihe bifata kugirango gihinduke umukara rwose, bita igihe cyo kwirabura. Kugirango umenye ubushyuhe bwumuriro wubushyuhe butandukanye kuri PVC ugereranije nigihe cyo kwirabura.
Igihe cyo kohereza: Jun-20-2024
