Peb txhua tus paub tias plasticizers tau siv dav hauv tshuaj, ntim khoom noj, khoom siv txhua hnub, cov khoom ua si, thiab lwm yam. Nyob rau xyoo tas los no, peb tau pom tias cov plasticizers zoo ib puag ncig kuj tau pib maj mam siv hauv cov kev lag luam no, yog li vim li cas peb yuav tsum siv ib puag ncig. phooj ywg plasticizers? Peb tuaj yeem txheeb xyuas qhov cuam tshuam ntawm plasticizers thiab cov txiaj ntsig ntawm ib puag ncig tus phooj ywg plasticizers.
Lub luag haujlwm ntawm plasticizers
1. Ua kom yooj yim ntawm cov polymer
Ib qho ntawm cov haujlwm ntawm plasticizers yog txhawm rau txhim kho qhov hloov pauv ntawm cov polymers. Nws yog vim li no tias plasticizers muaj ntau yam kev siv tshuaj thiab cov khoom ua si. Ntau tus neeg paub tias cov khoom siv yas tuaj yeem siv los ua cov khoom siv ntxiv hauv cov yas, tab sis lawv tsis' tsis paub tias lawv tuaj yeem siv rau hauv cov khoom siv kho mob. Feem ntau, nyob rau hauv cov hlab ntsha (IV) infusion hnab thiab kab, umbilical hlab ntsha catheters, cov hnab ntshav, thiab cov kab infusion, enteral khoom noj khoom haus hnab, nasogastric hlab, peritoneal dialysis hnab thiab kab, extracorporeal ncig (CPB) kab, Membrane ntsws oxygenation tubing ( ECMO) thiab dialysis tubing tau ntxiv cov yas yas.
2. Txo cov iav hloov pauv kub
Cov txheej txheem ntawm kev txo cov iav hloov pauv kub yog tias thaum lub plasticizer thiab cov resin melted ua ke, cov molecules me me ntawm plasticizer yuav muab tso rau ntawm lub polymer molecular chains, ua rau tsis muaj zog ntawm kev nyiam ntawm cov polymer molecular chains thiab ua rau lawv nce. Nws ua rau kom muaj peev xwm ntawm polymer molecular saw txav thiab txo qhov kev cuam tshuam ntawm cov saw hlau molecular kom cov resin tuaj yeem hloov pauv iav ntawm qhov kub thiab txias, yog li ua kom cov yas ntawm cov yas.
3. Txo qhov hardness ntawm lub polymer
Cov nyhuv ntawm kev txo cov tawv tawv ntawm lub polymer yog nyob rau hauv qhov xwm ntawm cov pab pawg nyob rau hauv lub polymer molecular saw. Kev sib cuam tshuam ntawm cov saw hlau molecular nrog cov pawg polar muaj zog yog qhov loj, thiab kev sib cuam tshuam ntawm cov saw hlau molecular nrog cov pab pawg tsis-polar yog me me. Polymers nrog pawg polar yog ib qho yooj yim rau kev tsim, thiab plasticizers tuaj yeem ntxiv. Cov pawg polar ntawm cov plasticizers yuav cuam tshuam nrog cov pawg polar ntawm cov polymer, yog li ua rau tsis muaj zog txaus nyiam ntawm cov polymers, thiab ua tiav lub hom phiaj ntawm cov yas.
4. Txo cov viscosity yaj
Cov nyhuv no feem ntau yog tshwm sim hauv cov ntaub ntawv thiab cov khoom ntim. Lub luag haujlwm tseem ceeb yog succinate compounds. Lawv tuaj yeem copolymerize nrog ib leeg kom tau txais kev cuam tshuam-tiv taus thiab txias-resistant polyvinyl chloride copolymer, thiab cov txheej txheem plastics Tus neeg sawv cev tuaj yeem ua lub luag haujlwm hauv kev txo cov viscosity ntawm cov yaj.
Cov txiaj ntsig ntawm ib puag ncig tus phooj ywg plasticizers
Peb twb tau qhia tias yog vim li cas cov yas yas siv rau saum toj no, thiab kev siv cov yas zoo ib puag ncig yog ib qho kev tsis pom kev hauv kev siv cov yas yas. Los ntawm cov lus qhia saum toj no, peb tuaj yeem pom tias tseem muaj ntau cov plasticizers siv, tab sis raws li cov khoom siv tshuaj, kev siv ntau dhau yuav ua rau muaj kev tiv thaiv ib puag ncig. Vim li cas peb thiaj hais li no? Kev siv cov plasticizers nce ntxiv yuav ua rau cov khoom siv khib nyiab ntau ntxiv. Thaum cov khoom pov tseg sib sau ua ke, qee cov tshuaj lom neeg yuav tshwm sim, uas yuav dhau ntawm peb txoj kev tswj hwm. Tab sis ntawm ib sab, lub luag hauj lwm ntawm plasticizers tseem loj heev, yog li cov neeg tau tsim ib puag ncig tus phooj ywg plasticizers los txo qhov siab ntawm ib puag ncig. Nyob rau hauv txoj kev no, ib puag ncig tus phooj ywg plasticizers tseem tsim nyog.