Cov Lus Piav Qhia Txog Cov Yam Ntxwv, Cov Txheej Txheem Ua Khoom, thiab Cov Kev Siv Cov Khoom Siv PE thiab PP

1. Cov Khoom Siv Txheej Txheem

PE, PP, PVC, PS, PC, PF, EP, ABS, PA, PMMA, thiab lwm yam. Lawv yog cov khoom siv yas, tseem hu ua cov khoom siv polymer. Lawv yog ib hom khoom siv hluavtaws uas muaj cov yas ua los ntawm cov khoom sib xyaw ua ke los ntawm ntau txoj kev ua. Cov khoom siv yas muaj qhov zoo ntawm kev sib dua, muaj zog siab, tiv taus corrosion zoo, thiab rwb thaiv tsev zoo heev. Lawv siv dav hauv kev ntim khoom, kev tsim kho, tsheb, khoom siv hluav taws xob, thiab ntau lwm yam teb.

Polyethylene (PE): Nws yog ib qho thermoplastic uas tsis hnyav, yoog tau thiab tiv taus tshuaj lom neeg zoo. Nyob ntawm qhov ceev, nws tuaj yeem muab faib ua polyethylene siab (HDPE) thiab polyethylene qis (LDPE).

Polypropylene (PP): Nws muaj kev tiv taus kub siab, tiv taus tshuaj lom neeg thiab kev ruaj khov, thiab feem ntau siv rau hauv cov khoom siv hauv tsheb thiab cov khoom siv hauv tsev.

2. Polyethylene (PE)

Cov Khoom Siv Lub Cev thiab Tshuaj: Polyethylene (PE) yog ib qho polymer uas muaj cov molecular siab linear nrog cov qauv molecular yooj yim heev, uas muaj cov "-CH2-CH2-" rov ua dua. Cov qauv no muab PE nrog ntau yam khoom siv lub cev thiab tshuaj tshwj xeeb.

Lub teeb yuag: PE muaj qhov ceev qis, kwv yees li ntawm 0.91 thiab 0.96 g / cm³, ua rau nws yog tus sawv cev ntawm cov ntaub ntawv sib dua.

Kev Tiv Thaiv Tshuaj: PE qhia tau tias muaj kev ruaj khov tshuaj zoo rau feem ntau cov kua qaub, cov hauv paus, thiab cov tshuaj ntsev.

Kev rwb thaiv hluav taws xob: Ua ib yam khoom tsis yog polar, PE muaj kev ua tau zoo heev ntawm kev rwb thaiv hluav taws xob.

Kev Tiv Thaiv Kub Qis: PE tuaj yeem tswj nws cov khoom siv lub cev ntawm qhov kub qis li -70 ° C. PE tuaj yeem rov ua dua tom qab cua sov, ua rau kev rov ua dua tshiab thiab rov ua dua tshiab.

Cov Txheej Txheem Ua Khoom: Cov txheej txheem ua cov polyethylene muaj ntau yam thiab feem ntau suav nrog cov hauv qab no.

Extrusion: siv rau kev tsim cov kav dej, cov txheej rwb thaiv tsev ntawm cov xov hlau thiab cov cables, thiab lwm yam.

Kev Txhaj Tshuaj Molding: tsim nyog rau kev tsim cov thawv me me, cov khoom ua si, thiab lwm yam.

Tshuab Moulding: siv rau kev tsim cov fwj khoob thiab cov thawv.

Compression Moulding: tsim nyog rau kev tsim cov khoom yas loj dua, siv rau kev tsim cov ntaub ntawv ntim khoom nyias nyias thiab cov tais.

Cov Ntawv ThovPolyethylene muaj ntau yam kev siv. Nov yog qee cov piv txwv tseem ceeb ntawm kev siv.

Cov Khoom Siv Ntim Khoom: PE zaj duab xis yog siv dav hauv kev ntim khoom noj thiab ntim khoom vim lawv qhov hnyav sib dua thiab kev tiv thaiv zoo.

Cov Yeeb Nkab Yas: Cov yeeb nkab HDPE feem ntau siv rau kev thauj mus los dej thiab roj vim lawv cov tshuaj lom neeg tsis kam thiab hnav tsis kam.

Cov Hlau thiab Cables: PE yog siv dav ua cov khoom siv rwb thaiv tsev hauv kev tsim cov hlau thiab cables.

Ua Liaj Ua Teb: PE yog siv los tsim cov yeeb yaj kiab ua liaj ua teb, xws li rau kev siv tshuab npog av.

Kev Kho Mob: Vim nws qhov sib xws ntawm bio-compatibility thiab tshuaj lom neeg tsis kam, PE kuj tseem siv rau hauv kev tsim khoom ntawm qee yam khoom siv kho mob.

Kev Lag Luam Tsheb: PE yog siv rau hauv kev tsim cov khoom siv tsheb, xws li cov roj tank thiab bumpers, vim nws qhov hnyav sib dua thiab tiv taus kev cuam tshuam.

3. Polypropylene (PP) Cov Khoom Siv Lub Cev thiab Tshuaj

Polypropylene (PP) yog ib qho linear thermoplastic polymer ua los ntawm polymerization ntawm propylene monomers. PP muaj cov yam ntxwv tseem ceeb ntawm lub cev thiab tshuaj lom neeg hauv qab no:

Kev Tiv Thaiv Kub: Lub ntsiab lus yaj ntawm PP yog nruab nrab ntawm 160 thiab 170 ° C, ua rau nws tiv taus kub thiab haum rau cov khoom uas xav tau kev tiv taus kub siab.

Kev Tiv Thaiv Tshuaj: PP ruaj khov tiv thaiv dej, cov ntsev inorganic, cov kua qaub, thiab cov hauv paus tab sis nws yooj yim rau qee cov kuab tshuaj organic.

Kev Rigidity: PP muaj kev rigidity siab, uas ua rau nws tswj tau nws cov duab thaum muaj kev thauj khoom hnyav.

Kev Tiv Thaiv Kev Qaug Zog: PP muaj kev tiv thaiv kev qaug zog zoo thiab tsim nyog rau cov ntawv thov uas xav tau kev khoov lossis ntswj ntau zaus. PP tuaj yeem ua kom sov thiab txias ntau zaus yam tsis poob nws cov khoom siv lub cev, ua rau nws yooj yim rau kev rov ua dua tshiab.

Cov Txheej Txheem Ua Khoom: Polypropylene tuaj yeem ua tiav rau ntau yam khoom los ntawm ntau txoj kev.

Extrusion: Siv rau kev tsim cov kav dej PP, ntawv, pas nrig, thiab lwm yam.

Kev Txhaj Tshuaj Moulding: Haum rau kev tsim cov khoom yas me me mus rau nruab nrab xws li cov thawv, cov hau, thiab cov khoom siv hauv tsheb.

Tshuab Pwm: Siv rau kev ua cov khoom yas loj xws li lub raj mis thiab cov thoob. Siv rau kev tsim cov thawv ntim khoom yas lossis cov tais uas muaj phab ntsa nyias.

Kev Tsim Khoom Siv Fiber: PP kuj tseem tuaj yeem ua rau cov fibers los ntawm kev ncab thiab kev xaws rau cov hlua, ntaub pua plag, thiab lwm yam.

Cov Cheeb Tsam ThovPolypropylene muaj ntau yam kev siv, suav nrog cov piv txwv hauv qab no.

Kev Lag Luam Tsheb: PP siv dav hauv kev lag luam tsheb rau ob qho tib si sab hauv thiab sab nraud vim nws qhov hnyav sib dua thiab tiv taus cua sov, xws li cov vaj huam sib luag ntsuas thiab lub bumpers.

Kev Lag Luam Textile: PP fibers yog siv rau hauv kev tsim cov hlua, cov ntaub pua plag, thiab cov khaub ncaws.

Cov Khoom Siv Ntim Khoom: Vim nws qhov hnyav sib dua thiab tiv taus tshuaj lom neeg, PP feem ntau siv rau hauv cov ntaub ntawv ntim khoom noj thiab cov khoom tsis yog khoom noj.

Cov Khoom Siv Hauv Tsev: PP yog siv rau hauv kev tsim cov thawv uas siv tau rau hauv lub tshuab hluav taws xob microwave, cov tub rau khoom txias, thiab lwm yam khoom siv hauv tsev.

Kev Lag Luam Tsim Kho: Cov kav dej PP thiab cov ntawv yog siv rau hauv kev tsim cov kav dej thiab cov ntaub ntawv kho kom zoo nkauj.

Kev Kho Mob Hauv Tebchaws: Vim nws qhov sib xws ntawm bio-compatibility, PP kuj tseem siv rau hauv kev tsim cov khoom siv kho mob pov tseg, xws li cov koob txhaj tshuaj thiab cov raj kuaj.