Ua qhia txog kev paub txog kev txaus siab ntawm cov khoom siv, kev txaus siab uas muaj peb yam, kev txaus siab uas tau rov qab, thiab kev txaus siab ntawm cov khoom siv polymer

Thiab yuav tsum paub tias thaum peb pab qhia txog cov khoom siv polymer, peb yog qhia txog cov khoom uas muaj ntau lub rooj ntawm cov khoom siv. Cov khoom siv polymer tuaj yeem pom tau hauv ntau qhov, los ntawm cov kab mob plastic mus rau cov phab ntsa, thiab mus rau cov khoom siv hauv lub xe. Qhov tseem ceeb uas peb yuav tsum paub txog cov khoom siv polymer yog kev tswj hwm. Kev tswj hwm yog qhov uas muaj kev ntsuas qhov ntau npaum li cas rau cov khoom siv uas muaj kev tswj hwm. Hauv kev ua haujlwm ntawm cov khoom siv polymer, kev paub txog ntau qhov kev tswj hwm, xws li kev tswj hwm nyob rau hauv qhov kev sib piv, kev tswj hwm nyob rau hauv qhov kev sib tw, kev tswj hwm nyob rau hauv qhov kev sib faib, thiab intrinsic viscosity tester , yog qhov tseem ceeb rau kev paub txog qhov zoo thiab qhov ua haujlwm ntawm cov khoom siv no. Nyob rau hauv ZONWON, peb tsis tau ua haujlwm rau cov khoom siv polymer, thiab peb pab cov thawj kawm paub yuav ua li cas rau kev ntsuas cov qhov no raws li kev tswj hwm.

Kev tswj hwm nyob rau hauv qhov kev sib piv yog dab tsi thiab yog li cas nws tseem ceeb rau qhov zoo ntawm cov khoom siv polymer?

Kev sib piv kev ntsuas kev tawm ntawm cov khoom siv polymer rau kev ntsuas kev tawm ntawm cov khoom siv solvent tuaj yeem ua li cas. Txhawm rau ua lub tsho yuav, koj muaj ib lub tsho ntawm dej thiab koj ntxuav ib qho honey rau hauv. Cov honey no yuav ua rau dej nyob hauv tsho no yuav nyias dua, lossis yuav tawm dua. Kev sib piv kev tawm no pab peb paub tias cov khoom siv polymer no yuav nyias dua li cas rau lub dej. Qhov no yog qhov tseem ceeb vim nws pab peb paub tias cov khoom siv polymer no yuav tawm li cas, lossis yuav ua li cas thaum sib txawv cov hom kev siv. Piv txwv li, yog tias kev sib piv kev tawm no yog siab heev, nws tuaj yeem hais tias cov khoom siv polymer no yog nyias heev rau kev siv hauv cov khoom siv lwm yam, li cas yog glue lossis paint. Tsis tas li ntawd, yog tias nws yog tsis siab heev, cov khoom siv polymer no tuaj yeem tsis tuaj yeem tswj tau raws li kev puas tsuaj lossis kev hloov pauv ntawm teb chaws. Nyob rau ZONWON, peb paub tias kev ntsuas kev sib piv kev tawm yog qhov tseem ceeb rau kev paub tias cov khoom siv polymer no yog zoo li cas. Qhov no pab cov neeg siv khoom siv paub tias yuav siv cov khoom siv no li cas kom zoo, uas pab tau ua cov khoom siv zoo dua thiab tsis muaj kev mob siab dua. tshuab ntaub ntawv tshwj xeeb yog tias kev sib piv kev tawm no yog siab heev, nws tuaj yeem hais tias cov khoom siv polymer no yog nyias heev rau kev siv hauv cov khoom siv lwm yam, li cas yog glue lossis paint. Tsis tas li ntawd, yog tias nws yog tsis siab heev, cov khoom siv polymer no tuaj yeem tsis tuaj yeem tswj tau raws li kev puas tsuaj lossis kev hloov pauv ntawm teb chaws. Nyob rau ZONWON, peb paub tias kev ntsuas kev sib piv kev tawm yog qhov tseem ceeb rau kev paub tias cov khoom siv polymer no yog zoo li cas. Qhov no pab cov neeg siv khoom siv paub tias yuav siv cov khoom siv no li cas kom zoo, uas pab tau ua cov khoom siv zoo dua thiab tsis muaj kev mob siab dua.

Yuav ua li cas los ntsuas kev tawm ntawm cov khoom siv polymer kom zoo?

Kev ntsuas kev tswj hwm ntawm cov khoom siv yog qhov tseem ceeb dua. Nws pab tau peb paub zoo dua txog qhov kev ua haujlwm ntawm cov khoom siv rau hauv cov lus qhia. Los ntawm kev ntsuas kev tswj hwm ntawm cov khoom siv, koj yuav tsum paub txog kev tswj hwm ntawm cov khoom siv thiab qhov ntau ntawm cov khoom siv rau hauv cov lus qhia. Cov lus qhia yog qhov tseem ceeb: koj yuav tsum rho tawm kev tswj hwm ntawm cov lus qhia los ntawm kev tswj hwm ntawm cov khoom siv thiab tom qab ntawd koj yuav tsum faib rau qhov ntau ntawm cov khoom siv. Qhov no pab peb paub txog qhov kev sib koom tes ntawm cov khoom siv thiab cov lus qhia. Piv txwv li, yog koj tsim cov lus qhia tshiab rau kev kho mob, kev paub txog kev tswj hwm ntawm cov khoom siv yuav pab koj tsim cov lus qhia uas yuav tshwm sim zoo thiab yuav tshwm sim zoo rau hauv qhov chaw. Nws yog li cas nyob rau hauv kev kho mob; yog koj tsis muaj qhov ntau ntawm cov khoom siv, koj lub kua mob yuav tsis tshwm sim zoo. Rau ZONWON, peb xav tias kev ntsuas zoo yog qhov tseem ceeb rau kev ntsuas cov khoom siv. Los ntawm kev siv cov khoom siv zoo thiab cov kev siv zoo, peb tuaj yeem pab cov neeg siv peb tsim cov khoom siv zoo dua uas txhawb cov neeg siv. Yog li, rau kev siv rau hauv kev kho mob, kev siv rau hauv cov khoom siv rau hauv lub rooj, lossis rau hauv cov khoom siv rau hauv kev siv ntawm cov neeg, kev paub txog kev tswj hwm ntawm cov khoom siv yuav pab tau peb tsim cov khoom siv tshiab uas pab tau peb lub neej txhua hnub.

Ua qhia txog kev ntsuas qhov tshuaj ntsuas

Viscosity yog li qhia txog qhov ntev los sis lub tshuab yog li cas. Txhawj xyuam rau honey thiab dej. Honey yog ntev thiab nws tsis muaj kev hla tau zoo, tab sis dej yog qis thiab nws hla tau zoo. Hauv qhov kev sib piv ntawm polymer, uas yog cov khoom uas muaj ntau yam molecules nyob rau hauv ib tug ntev, kev paub txog viscosity yog qhov txaus siab heev. Muaj ntau yam viscosity uas cov neeg kho mob thiab cov neeg ua haujlwm siv los nrhiav paub txog qhov kev ua haujlwm ntawm cov khoom no. Ib yam yog relative viscosity. Yog no qhia rau peb paub txog qhov viscosity ntawm polymer compared rau viscosity ntawm solvent, los sis dej. Specific viscosity yog ib yam ntxiv, thiab nws qhia rau peb paub txog qhov polymer yog ntev dua solvent li cas. Reduced viscosity yog ib yam ntxiv. Nws pab peb paub txog qhov ntev ntawm polymer molecules pab peb paub txog qhov ntev ntawm tshuab. Thaum kawg, intrinsic viscosity yog txog qhov kev ua haujlwm ntawm polymer hauv ib tug solution. Yog no pab peb paub txog qhov ntev thiab qhov rov qab ntawm polymer. Hauv ZONWON, peb xav paub txog cov lus no vim lawv pab peb ua cov khoom zoo dua. Los ntawm kev paub txog viscosity, peb tuaj yeem ua kom cov polymer ntawm peb yog loj thiab muaj kev siv tau rau cov khoom zoo li plastic bottles, toys, thiab tso cai rau cov khoom siv hauv kev kho mob. Kev vam txog viscosity pab peb paub tias cov khoom ntawm peb yog zoo thiab ua haujlwm zoo.

Yam ntxiv cov kws xa tuaj yuav tsum paub txog kev ntsuas qhov ntaus ntawv rau kev xa tuaj polymers?

Thaum kws xa tuaj polymers nyob rau hauv qhov loj, cov kws xa tuaj yuav tsum paub tias qhov ntaus ntawv yuav sib koom rau kev xa tuaj. Rau lub cim, qhov ntaus ntawv ntawm polymer yuav pab tau peb paub tias nws yuav ua li cas rau cov khoom sib txawv. Piv txwv li, yog tias polymer muaj qhov ntaus ntawv loj kev kawm ntawv chav sib txig , nws lub tswv yim ntawm kev ua cov khoom txaus thiab tsis tuaj yeem muaj kev nyuaj siab. Tsis hais li ntawd, cov khoom siv uas muaj qhov viscosity tsawg yog ib qho zoo rau cov khoom uas xav tau kev npaj los ntawm qhov viscosity, raws li cov khoom siv uas muaj kev npaj los (paints) lossis cov khoom siv uas muaj kev npaj los (adhesives). Cov neeg sau khoom kuj yuav tsum xav txog qhov viscosity yuav cuam tshuam li cas los ntawm qhov cua sov. Qee cov khoom siv yuav ua kom ntau dua thaum sov, tab sis qee yuav ua kom ntau dua thaum yuav sov. Qhov no yog qhov txaus txiav txim vim cov khoom siv yuav raug sov lossis yuav sov thaum ua haujlwm. Nyob rau ZONWON, peb xav kom cov neeg sau khoom nug txog qhov viscosity ntawm cov khoom siv uas lawv xav sau. Lawv yuav tsum nrhiav cov lus qhia tias qhov viscosity yuav cuam tshuam li cas thaum muaj qhov cua sov lossis yuav sov. Qhov lus qhia no yuav pab cov neeg sau khoom xaiv cov khoom siv uas zoo tshaj plaws rau lawv, thiab pab kom cov khoom siv uas tau ua los yog zoo thiab ua haujlwm zoo. Ntawd li, kev paub txog qhov viscosity kuj pab cov neeg sau khoom tshem tawm kev puas tsuaj thaum ua haujlwm. Yog tias cov khoom siv yog ntau dua, nws yuav pab tshem tawm cov khoom siv thiab ua rau kev ua haujlwm yuav tawm. Yog tias cov khoom siv yog ntau dua, nws yuav tsis pab tau kev nyuaj siab uas xav tau. Vim li no, kev paub txog qhov viscosity pab cov neeg sau khoom xaiv cov khoom siv uas zoo tshaj plaws rau lawv.

Yog li cas los ua kom zoo dua qhov polymer los ntawm kev siv lub viscosity test?

Los ntawv ceeb rau kev tsim cov khoom tshuaj ntau yam uas muaj qhov zoo, kev txhawj xyuas qhov viscosity yog ib qho tseem ceeb. Kev txhawj xyuas no pab peb paub seb cov khoom tshuaj yuav ua li cas hauv cov teeb meem sib txawv. Nyob rau ZONWON, peb xav tias yog peb txhawj xyuas qhov viscosity tag nrho, peb yuav tuaj yeem pom cov teeb meem thaum kawg. Piv txwv li, yog qhov viscosity ntawm ib qho khoom tshuaj yog loo heev, nws yuav pab peb paub tias muaj teeb meem nyob rau hauv cov khoom siv los sis los yog kev tsim khoom. Yog peb pom nws thaum kawg, peb yuav tuaj yeem suav nws kom zoo ua ntej li nws tau dhau los ua teeb meem loo heev. Ib qho kev txhawj xyuas viscosity pab peb dua yog kom muaj qhov tswv yim tib yam. Thaum peb tsim cov khoom, yog tseem ceeb kom txhua qho khoom tshuaj muaj qhov tib yam. Yog ib qho khoom tshuaj yog loo heev lossis loo ncaj ncees dua lwm qho, cov khoom thaum plua yuav tsis ua haujlwm tib yam. Kev txhawj xyuas viscosity tag nrho pab peb kom muaj qhov tswv yim tib yam, thiab qhov no yog qhov tseem ceeb rau qhov zoo. Ntawd li, kev txhawj xyuas viscosity yuav pab peb kom zoo dua rau cov formula. Yog peb pom tias ib qho khoom siv yog ua rau cov khoom tshuaj loo heev, peb yuav tuaj yeem sim cov leej twg sib txawv lossis cov yam ntxwv sib txawv ntawm cov khoom siv no. Qhov no pab peb kom zoo dua cov khoom rau kom zoo dua thiab muaj qhov zoo dua. Los ntawm kev nco ntsoov rau kev txhawj xyuas viscosity, ZONWON yuav tuaj yeem xa cov khoom tshuaj uas tsis yog txaus rau kev xav txog ntawm cov neeg siv khoom, tab sis yuav zoo dua li kev xav txog ntawm cov neeg siv khoom. Thaum plooj, kev txhawj xyuas viscosity zoo yuav pab peb tsim cov khoom zoo dua, cov neeg siv khoom yuav nyiam dua, thiab peb yuav muaj qhov chaw zoo dua rau hauv qhov chaw tsim khoom.