Luam tawm rau lub Cuaj Hlis 27, 2024 los ntawm Yidan Zhong
Cov khoom siv ntxiv rau yas yog dab tsi?
Cov khoom siv ntxiv rau yas yog cov khoom siv ntuj lossis cov khoom siv tsis muaj organic lossis cov organic uas hloov cov yam ntxwv ntawm cov yas ntshiab lossis ntxiv cov yam ntxwv tshiab. Cov chaw tsim khoom sib tov cov resin nrog cov masterbatches ntxiv rau hauv cov feem tshwj xeeb raws li cov khoom xav tau, tom qab ntawd tsim ntau yam khoom siv. Tom qab ua tiav los ntawm kev casting, compression, molding, thiab lwm yam, qhov sib tov thawj zaug siv cov duab xav tau.
Kev sib xyaw cov khoom ntxiv sib txawv nrog cov yas granules tuaj yeem muab ntau yam khoom rau cov yas, xws li kev ua kom muaj zog dua, kev rwb thaiv tsev zoo dua, thiab qhov tiav ci ntsa iab. Kev ntxiv cov khoom ntxiv rau cov yas tsis yog tsuas yog ua rau cov khoom yas sib dua xwb tab sis kuj txhim kho lawv cov xim, ua rau cov khoom ntseeg tau dua rau cov neeg siv. Qhov no yog vim li cas 90% ntawmcov khoom yasthoob ntiaj teb siv cov khoom ntxiv, vim tias cov yas ntshiab feem ntau tsis muaj qhov tawv, ruaj khov, thiab lub zog. Cov khoom ntxiv yuav tsum tau muab sib xyaw ua ke kom cov yas kav ntev hauv cov xwm txheej ib puag ncig hnyav.
Cov khoom siv yas uas siv ntau tshaj plaws niaj hnub no yog dab tsi?
1. Cov tshuaj ntxiv tiv thaiv kev thaiv (tiv thaiv kev nplaum)
Kev lo rau zaj duab xis tuaj yeem cuam tshuam tsis zoo rau kev ua thiab kev siv zaj duab xis, qee zaum ua rau zaj duab xis tsis siv tau. Cov tshuaj ntxiv uas tiv thaiv kev thaiv ua rau qhov chaw ntawm zaj duab xis ntxhib los tsim cov nyhuv ncab, txo qhov kev sib cuag ntawm cov zaj duab xis thiab tiv thaiv lawv kom tsis txhob lo ua ke.
Cov tshuaj tiv thaiv kev thaiv yuav tsum muaj txiaj ntsig zoo, nrog rau qhov zoo thiab ruaj khov, muaj qhov cuam tshuam me ntsis lossis tsis muaj kev cuam tshuam rau kev ua haujlwm ntawm zaj duab xis, tshwj xeeb tshaj yog hauv cov yeeb yaj kiab LLDPE thiab LDPE. Cov tshuaj tiv thaiv kev thaiv feem ntau siv nrog rau cov tshuaj zawv zawg los tsim kom muaj ib puag ncig ua haujlwm zoo tshaj plaws rau cov yeeb yaj kiab.
Cov khoom xyaw nquag ntawm cov tshuaj tiv thaiv kev thaiv suav nrog cov silica hluavtaws (SiO2) xws li fumed silica, gel silica, thiab zeolite, lossis cov khoom siv ntuj thiab cov mineral SiO2 xws li av nplaum, diatomaceous earth, quartz, thiab talc. Cov khoom siv hluavtaws muaj qhov zoo ntawm tsis yog crystalline (zam tsis txhob muaj hmoov av chalky), thaum cov khoom siv ntuj xav tau kev kho tshwj xeeb kom txo cov hmoov av.
2. Cov neeg sawv cev ua kom pom tseeb
Thaum lub sijhawm ua cov khoom no, cov khoom xws li cov khoom siv los yog cov yas rov ua dua tshiab yuav ua rau cov khoom tsis pom tseeb. Cov tshuaj ua kom pom tseeb muab kev daws teeb meem, ua rau cov khoom ci ntsa iab dua thaum txo cov nqi tsim khoom.
Cov tshuaj ua kom pom tseeb tuaj yeem ua kom pom tseeb dua ntawm tus nqi qis thaum tseem muab cov txiaj ntsig zoo los ntawm kev txo lub sijhawm voj voog thiab txuag hluav taws xob. Lawv tsis cuam tshuam tsis zoo rau kev vuam, kev nplaum, lossis lwm yam kev ua haujlwm.
3. Cov khoom siv yas
Cov tshuaj masterbatch yas, feem ntau yog ua los ntawm calcium carbonate (CaCO3), yog siv rau hauv kev lag luam yas los hloov kho cov yam ntxwv ntawm cov resins lossis polymer resins, txo cov nqi khoom.
Cov hmoov pob zeb sib xyaw, cov khoom ntxiv, thiab cov resin thawj zaug raug yaj rau hauv cov kua resin thiab txias rau hauv cov granules, uas tom qab ntawd sib xyaw nrog cov yas nyoos rau cov txheej txheem xws li tshuab molding, spinning, thiab txhaj tshuaj molding los tsim cov khoom yas.
Thaum ua cov yas PP, tej yam xws li kev ntsws thiab kev nkhaus feem ntau cuam tshuam rau qhov zoo ntawm cov khoom. Cov tshuaj ua kom tawv pab ua kom cov khoom pwm sai dua, txo kev nkhaus, thiab txhim kho kev pom tseeb. Lawv kuj tseem ua kom luv luv lub voj voog nias, txhim kho kev ua haujlwm ntau lawm.
4. Cov tshuaj tiv thaiv UV (cov tshuaj ntxiv rau UV)
Lub teeb ultraviolet tuaj yeem rhuav tshem cov pob zeb hauv cov polymers, ua rau muaj kev puas tsuaj ntawm photochemical thiab ua rau chalking, discoloration, thiab poob khoom. UV stabilizers zoo li hindered amine light stabilizers (HALS) neutralize free radicals uas ua rau muaj kev puas tsuaj, yog li ntawd ntev lub neej ntawm cov khoom.
5. Cov tshuaj ntxiv tiv thaiv kev zoo li qub
Thaum lub sijhawm ua cov yas, cov yas me me yuav tsim hluav taws xob zoo li qub, rub cov hmoov av rau saum npoo. Cov tshuaj tiv thaiv zoo li qub yuav txo cov nqi hluav taws xob ntawm daim zaj duab xis, ua kom muaj kev nyab xeeb thiab txo cov hmoov av sib sau ua ke.
Hom:
Cov tshuaj tiv thaiv static uas tsis ruaj khov: cov tshuaj pleev rau saum npoo av, cov ntsev organic, ethylene glycol, polyethylene glycol
Cov tshuaj tiv thaiv static ruaj khov: polyhydroxy polyamines (PHPA), polyalkyl copolymers
6. Cov tshuaj ntxiv tiv thaiv kev sib tsoo
Cov zaj duab xis feem ntau lo ua ke vim yog lub zog nplaum, cov nqi sib txawv, lossis lub zog nqus tsev, ua rau nws nyuaj rau cais lawv. Cov tshuaj ntxiv tiv thaiv kev sib sau ua ke ua rau qhov chaw ntawm zaj duab xis ntxhib kom cua tsis txhob sib sau ua ke. Qee qhov xwm txheej tshwj xeeb muaj cov khoom tiv thaiv hluav taws xob los tiv thaiv kev sib sau ua ke.
7. Cov tshuaj ntxiv uas tiv taus hluav taws
Cov yas yooj yim kub hnyiab vim lawv cov qauv molecular carbon-chain. Cov tshuaj tiv thaiv hluav taws ua rau kev tiv thaiv hluav taws zoo dua los ntawm cov txheej txheem xws li tsim cov txheej tiv thaiv lossis tua cov free radicals.
Cov tshuaj tiv thaiv hluav taws feem ntau:
Cov tshuaj halogenated nplaim taws
Cov khoom siv DOPO
Inorganic: txhuas hydroxide (Al(OH)3), magnesium hydroxide (Mg(OH)2), liab phosphorus
Cov organic: phosphates
8. Cov tshuaj ntxiv tiv thaiv pos huab
Cov tshuaj tiv thaiv pos huab tiv thaiv cov dej kom tsis txhob sib sau ua ke rau ntawm cov yas yas ua cov tee dej, uas feem ntau pom muaj nyob rau hauv cov ntim khoom noj uas khaws cia rau hauv lub tub yees lossis tsev cog khoom. Cov tshuaj no ua kom pom tseeb thiab tiv thaiv pos huab.
Cov tshuaj tiv thaiv pos huab feem ntau:
PLA (polylactic acid)
Lanxess AF DP1-1701
9. Cov khoom ua kom pom kev ci ntsa iab
Cov tshuaj ua kom ci ntsa iab, tseem hu ua cov tshuaj ua kom dawb fluorescent, feem ntau yog siv los nqus lub teeb UV thiab tso tawm lub teeb pom kev, ua kom cov khoom yas zoo nkauj dua. Qhov no pab txo qhov tsis muaj xim, tshwj xeeb tshaj yog cov yas rov ua dua tshiab, ua rau cov xim ci dua thiab ci dua.
Cov tshuaj ua kom pom kev zoo nkauj feem ntau: OB-1, OB, KCB, FP (127), KSN, KB.
10. Cov tshuaj ntxiv uas txhawb nqa kev lwj ntawm cov khoom noj
Cov yas siv sijhawm ntev heev los lwj, ua rau muaj teeb meem rau ib puag ncig. Cov tshuaj ntxiv rau kev lwj hauv lub cev, xws li Reverte, pab ua kom cov yas lwj sai dua nyob rau hauv cov huab cua ib puag ncig xws li oxygen, tshav ntuj, thiab kub.
Cov tshuaj ntxiv no pab hloov cov yas uas tsis lwj mus ua cov khoom siv lwj, zoo ib yam li cov khoom ntuj xws li nplooj lossis nroj tsuag, uas pab txhawb kev ruaj khov ntawm ib puag ncig.
Lub sijhawm tshaj tawm: Cuaj hlis-27-2024
