Yuav Ua Li Cas Xaiv Polypropylene-Classification Ntawm Polypropylene
Jul 18, 2024| Polyethylene yog dab tsi?
Polyethyleneyog cov thermoplastic polymers uas muaj ntau yam kev siv. Xyoo 1950, cov kws tshawb fawb German thiab Italian, Karl Ziegler thiab Giulio Natta, tau tshawb pom cov txheej txheem polymerization uas tsim cov polyethylene.Ua los ntawm cov tshuaj sib xyaw ethylene, polyethylene muaj cov ceg ncaj ncaj uas tuaj yeem ceg tawm. Cov variations nyob rau hauv cov qauv branching yog dab tsi cais txawv polyethylene los ntawm ib leeg.
Ntau hom polyethylene
Lub zog thiab cov qauv ntawm nws cov molecular bonds txiav txim siab polyethylene qib ntawm ntom thiab elasticity, uas yog qhov txawv ntawm ib hom polyethylene los ntawm lwm tus. Peb yuav npog peb hom polyethylene tam sim no.
Tsawg-density polyethylene (LDPE)
Tawm ntawm tag nrho cov polyethylene, LDPE muaj feem ntau ceg. Nrog rau lub thickness ntawm 0.5 mils mus rau 40 mils, qhov no dav siv yas yog tsim nyog saj zawg zog, ua rau nws haum rau ntau yam nto.
Nws cov ceg ntoo siab txo nws qhov ceev mus rau qhov ntau ntawm 0.91-0.925g/cm3. Nws yog ib qho tseem ceeb kom nco ntsoov tias qhov tsis muaj qhov ntom ntom no ua rau muaj kev pheej hmoo ntawm kev puas tsuaj.
Cov ntawv thov feem ntau rau LDPE suav nrog:
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Linear low ntom polyethylene (LLDPE)
LLDPE cov khoom lag luam yog qhov yooj yim tshaj plaws ntawm cov yas. Cov polymer no feem ntau ua ke nrog lwm cov yeeb yaj kiab txhawm rau txhawm rau nce elasticity thiab durability ntawm cov ntaub ntawv siv.
Cov molecules ntawm LLDPE compound tseem nyob ruaj khov txawm tias thaum cov khoom raug rub los yog strained. Nws muaj ntau ceg luv uas glide tawm tsam ib leeg.
Qhov no ua rau cov yeeb yaj kiab tsis tsim kua muag txawm tias muaj kev cuam tshuam loj heev. Thiab vim hais tias cov ceg yog luv luv, lawv tsis nkag mus rau hauv ib tug tangled mess
Ib qho khoom siv LLDPE kuj muaj cov yam ntxwv hauv qab no:
Thickness - 0.5 mils mus rau 40 mils;
LLDPE Density - 091-0.94g/cm3;
Crystallinity - Nyob ib ncig ntawm 5%, uas ua rau nws tsis tshua muaj crystalline polyethylene. Qhov no yog vim li cas rau nws yooj,
Stress Cracking - Tsis rhiab rau kev ntxhov siab uas yuav ua rau tawg, ua rau nws yog qhov kev xaiv ntse thaum xav tau cov khoom siv uas tuaj yeem tiv taus qis.
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Nov yog ob peb txoj hauv kev siv cov khoom siv uas tsis tshua muaj ntom ntom polyethylene:
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High density polyethylene (HDPE)
Hom polyethylene no yog qhov ruaj khov tshaj plaws thiab tshuaj tiv thaiv, tab sis nws kuj tsis yooj yim dua li LDPE thiab LLDPE.
Tightly ua ke hlwb tsim HDPE tebchaw. Cov hlwb no sib koom ua ke muaj zog heev uas invading molecules muaj lub sij hawm nyuaj heev los ntawm.
HDPECov tebchaw muaj me me heev uas yuav luag tsis muaj, muab cov polymer no nws cov khoom tsis zoo thiab tsis muaj zog. HDPE yog cov polymer xaiv thaum xav tau cov ntaub ntawv uas tuaj yeem tiv taus cov tshuaj lom neeg.
Nov yog qee qhov kev ua tau zoo uas ua rau HDPE cov khoom sib txawv ntawm lwm cov polyethylene:
Thickness - 12 mus rau 100 mils;
Qhov ceev - 0941-0.965g/cm3;
Crystallinity - 50%, ua nws ib nrab-crystalline polymer uas muaj peev xwm tiv taus cov tshuaj;
Stress Cracking - Nws crystallinity ua rau muaj kev pheej hmoo ntawm HDPE tawg nyob rau hauv kev ntxhov siab,
UV Resistant - Tsis tas yuav suav nrog UV additives hauv HDPE cov ntaub ntawv vim tias cov polymers tau yooj yim los daws cov hnub raug.
Qee cov ntawv thov HDPE feem ntau suav nrog:
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Yuav Ua Li Cas Xaiv Txoj Cai Polyethylene
Cov polyethylene sib txawv muaj qhov zoo sib txawv. Koj tuaj yeem xaiv cov polyethylene sib txawv nyob ntawm koj lub hom phiaj.
Rau kev ua haujlwm ntev, koj tuaj yeem xaiv HDPE. HDPE muaj lub zog siab tshaj plaws, tab sis nco ntsoov tias nws yooj yim dua rau kev ntxhov siab tawg thiab tsis hloov pauv.
Rau kev yooj yim, koj tuaj yeem xaiv linear low-density polyethylene, uas tsis tshua muaj kev ntxhov siab tawg.
Rau cov tshuaj koom nrog, koj xav tau cov tshuaj tiv thaiv polymer HDPE.
Rau siab koom tes, linear low-density polyethylene yuav yog qhov kev xaiv zoo dua li HDPE.
Hauv cov ntsiab lus, yog tias koj qhov project xav tau cov khoom siv ruaj khov lossis tshuaj tiv thaiv, HDPE tej zaum yuav yog qhov koj xaiv zoo tshaj. Txawm li cas los xij, yog tias koj tab tom nrhiav ib yam khoom uas yooj yim rau nruab thiab tsis xav tau tib lub zog zoo li HDPE polymer, LLDPE yuav yog qhov kev xaiv zoo dua.
Hais txog peb
Luoyang Dema Ntshuam & Export Co., Ltd. aims muab cov khoom zoo, nqi-zoo rau cov chaw tsim khoom thoob ntiaj teb,cov khoom yasmanufacturers, thiab cov khoom distributors. Luoyang Dema Ntshuam & Export Co., Ltd. muab qhov zoo tshaj plaws PP, PE, PVC, AVE, ABS khoom daws teeb meem rau cov khoom yas manufacturers, wholesalers, distributors, distributors, Hoobkas tswv, ua rhiav, thiab lwm yam.
Yog tias koj tab tom nrhiav cov ntaub ntawv yas dav dav, thov koj xav tias dawb tau txais cov nqi tshiab thiab cov lus hais los ntawm Luoyang Dema Ntshuam & Export Co., Ltd. Pab pawg muag khoom yuav teb rau hauv 48 teev.