Yuav ua li cas rau ib puag ncig tus phooj ywg plasticizers thiab resins tuaj yeem ua ke zoo
Jun 20, 2021
(1) Zoo sib xws. Qhov no yog qhov yuav tsum tau ua rau ib puag ncig tus phooj ywg plasticizers. Lub npe hu ua kev sib raug zoo txhais tau hais tias cov polymer tuaj yeem tuav cov yas ntau npaum li qhov ua tau. Thiab tsim ib qho kev sib txuam thiab ruaj khov. Yog tsis muaj theem sib cais, tsis muaj ntshav tshwm sim.
(2) Zoo durability Durability yog ib qho kev ntsuas ntawm qhov kev ua tau zoo ntawm cov yas yas, suav nrog qis
Volatility, migration kuj, tsis muaj extractability, tshav kub tsis kam, lub teeb thiab kub stability.
1. Volatility yog hais txog lub peev xwm ntawm ib puag ncig tus phooj ywg plasticizers kom volatilize los ntawm polymers. Qhov peev xwm no tuaj yeem suav tias yog kev tsiv teb tsaws los ntawm sab hauv ntawm qhov sib xyaw rau saum npoo, thiab tom qab ntawd evaporation ntawm qhov chaw mus rau qhov nruab nrab ib puag ncig. Yog li ntawd, ib tug plasticizer nrog ib tug tsawg diffusion tus nqi thiab ib tug boiling point yuav tsum tau xaiv.
2. Kev tsiv teb tsaws txhais tau hais tias cov molecules ntawm cov yas txav mus rau saum npoo los yog cov yas uas muaj cov yas yas tuaj yeem tiv nrog lwm yam khoom, thiab cov yas yas txav mus rau saum npoo ntawm cov yas. Piv txwv li, cov yas siv hauv cov khoom siv hluav taws xob yuav tsum tsis txhob txav mus los txhawm rau txhawm rau tiv thaiv hluav taws xob.
3. Chemical extractability Tag nrho cov plasticizers uas tau muab rho tawm los ntawm lwm yam tshuaj los ua cov tshuaj hloov pauv yog cais raws li tshuaj extractability. Qhov no tshwm sim yog tshwm sim nyob rau hauv hais tias thaum cov khoom yas yog corroded los ntawm cov organic solvents los yog ntxhia roj, raws li lub plasticizer yog kos tawm, cov kuab tshuaj yog absorbed. Txoj cai yog tias qhov siab dua qhov hnyav molecular, qhov qis dua qhov extractability.
Cov khoom siv yas ua tiav nrog qhov tsis muaj zog, kev tsiv teb tsaws zoo, thiab cov yas yas uas tsis tau muab rho tawm muaj lub neej ua haujlwm ntev.
(3) Lub teeb-kub stability thiab qis-kub thiab txias-tiv taus. Cov khoom yas yuav tsum tau ua kom lawv cov softness thaum ua thiab siv. Qhov no yuav tsum tau plasticizers kom muaj cua sov-tiv taus, lub teeb-tiv taus, thiab tsis kub-kub tsis kam. Lub plasticizer muaj qhov tsis zoo thaum tshav kub kub.
(4) Hluav taws xob rwb thaiv tsev PVC cov khoom nyuaj uas tsis muaj plasticizer, nws cov hluav taws xob rwb thaiv tsev yog ohm / cm (ntim qhov tsis kam), thaum ntxiv plasticizer, hluav taws xob rwb thaiv tsev kev ua haujlwm yuav txo qis. Yog li ntawd, hluav taws xob rwb thaiv tsev ntawm polyvinyl chloride plastics nyob ntawm qhov loj ntawm ntau yam, ntau npaum li cas thiab qhov xwm ntawm plasticizer. Phosphate esters thiab chlorinated paraffins muaj zog dua,
Nws kho cov pob txha polymer ntawm txoj hauj lwm polarized, thiab cov hluav taws xob rwb thaiv tsev ua tau zoo dua.
(5) nplaim retardancy General esters muaj nplaim retardant teebmeem. Phosphate esters thiab chlorinated paraffins (tshwj tsis yog rau ib tus neeg) muaj cov nplaim hluav taws kub. Yog li ntawd, thaum xav txog cov khoom yas rau kev tsim kho thiab cov rooj tog zaum, xaiv cov yas yas nrog cov nplaim hluav taws lossis tsis muaj hluav taws xob.
(6) Antifungal (fungus) tsis kam. Qee cov khoom yas, xws li polyvinyl chloride hluavtaws tawv, yuav ua pwm thaum khaws cia thiab siv. Qhov no yog tshwm sim los ntawm moldy dibasic acid ester plasticizers. Qhov tshwm sim no yuav tsis tshwm sim yog tias siv phosphate esters thiab chlorinated paraffin plasticizers.
(7) Tsis muaj tshuaj lom Thaum xaiv cov yas yas ua cov khoom ntim khoom noj, yuav tsum xav txog qhov tsis muaj tshuaj lom. Epoxy plasticizers xws li epoxy soybean roj yog dav siv.
