Cov ntaub ntawv xav tau kev tsim cov yas pwm yas rau kev siv hauv tsev

2021/01/20

Polypropylene (PP)

Ordinary PP feem ntau siv rau hauv kev txhaj tshuaj mould lub tsho tiv thaiv lub tog raj, rooj zaum, cov quav, cov thoob, cov khoom ua si, cov khoom siv, chaw ua haujlwm, khoom siv hauv chaw ua haujlwm, rooj tog, khawm, lub thawv tig thiab lwm yam. , tub rau khoom hauv tub yees, lub tsev rau khoom siv tsev plhaub, thiab lwm yam.

Polypropylene yog thermoplastic cob ua los ntawm polymerization ntawm propylene.Ntawm rau txoj haujlwm ntawm kev siv methyl, nws tuaj yeem faib ua peb yam: â 'isotactic polypropylene, â'¡ atactic polypropylene thiab â' ¢ interisotactic polypropylene.

Cov yam ntxwv ntawm PP

PP non-toxic, tasteless, tuaj yeem tsau rau hauv 100â „ƒ lub rhaub dej tsis muaj deformation, tsis muaj kev puas tsuaj, cov kua qaub, alkali organic solvents yuav luag tsis muaj kev cuam tshuam rau nws feem ntau yog siv rau tableware.Soybean mis nyuj fwj, yogurt fwj, kua txiv fwj, microwave cov thawv noj su melting taw tes txog 167â „ƒ, yog lub thawv yas nkaus xwb tuaj yeem tso rau hauv lub qhov cub microwave, tuaj yeem rov siv dua tom qab ntxuav tu.

Kev ntsuas me me, lub zog ruaj khov, lub zog tawv thiab qhov kub tsis kam yog qhov zoo dua li qhov siab tsis muaj polyethylene, tuaj yeem siv txog ntawm 100 degrees.

Muaj cov khoom siv hluav taws xob zoo thiab lub teeb hluav taws xob ntau tsis yog cuam tshuam los ntawm cov av noo, tab sis tsis kub tsis zoo, tsis hnav-resistant, yooj yim rau kev laus.

Npaj thev naus laus zis ntawm PP

PP feem ntau yog siv rau kev txhaj tshuaj molding: PP kev txhaj tshuaj tuaj yeem suav txog ib nrab, txhua hnub kev xav tau nrog cov PP zoo tib yam li cov khoom siv, pib qhov khoom los txhim kho lossis nruj dua PP li cov khoom siv raw, lwm yam kev siv nrog kev cuam tshuam loj zog thiab qis embrittlement kub ntawm PP- C raw khoom.

Cov Ntsiab Lus rau Kev Mloog Xav Siv

Qee lub microwave lub thawv, lub thawv lub cev rau 5 PP kev tsim khoom, tab sis lub thawv lub thawv yog tsim rau 1 PE, vim tias PE tiv tsis taus qhov kub, nws tsis tuaj yeem muab tso rau hauv lub qhov cub microwave nrog lub thawv lub cev.

Polyvinyl chloride (PVC)

PVC yog cov polymer ntawm cov dawb radical polymerization ntawm polyethylene monomer. Nws yog ib qho ntawm kev lag luam tsim kho ua ntej tshaj plaws. Nws yog cov cob ntau yam ua ntej 1960, thiab nws tsuas yog tus thib ob hauv lub sijhawm xyoo 1960.

Raws li qhov hnyav molecular, PVC tuaj yeem muab faib ua hom dav dav (qhov nruab nrab ntawm polymerization yog 500-1500) thiab siab polymerization (qhov nruab nrab ntawm polymerization yog loj dua 1700) ob hom.Commonly siv PVC resin yog feem ntau dav. hom.

Cov khoom tseem ceeb ntawm PVC:

1) kev ua haujlwm dav dav: PVC resin yog dawb los yog lub teeb daj hmoov, qhov nyuaj ntawm nws cov khoom tuaj yeem hloov kho los ntawm kev ntxiv ntawm cov yas, ua cov khoom mos thiab tawv.Pure PVC dej nqus thiab permeability yog qhov tsawg heev.

2) Cov yam ntxwv ntawm lub cev: PVC muaj lub siab tawv thiab cov cuab yeej zoo, thiab nce nrog qhov nce ntawm lub cev nyhav, tab sis poob qis nrog qhov nce ntawm qhov kub thiab txias.Qhov ntawm cov yas tau ntxiv rau hauv PVC muaj qhov cuam tshuam zoo ntawm cov khoom siv kho tshuab. Feem ntau, cov khoom siv cav txo nrog qhov nce ntawm plasticizer cov ntsiab lus.Qhov hnav tsis kam ntawm PVC yog qhov dav dav.

Daim ntawv thov:

1) daim ntawv thov ntawm cov khoom lag luam nyuaj PVC

Cov khoom yeeb nkab:siv rau cov raj xa dej sab saud, qis xa cov yeeb nkab, roj yeeb nkab, infusion yeeb nkab thiab xov yeeb nkab profile: siv rau cov qhov rooj, Qhov rai, kho kom zoo nkauj ntoo, kab ntoo, rooj tog zaum thiab ntaiv ntaiv.

Phaj:tuaj yeem muab faib ua corrugated board, ntom board thiab foamed board, siv rau siding, qab nthab, kaw, pem teb thiab li ntawm.Sheet: siv rau cov khoom lag luam yas, xws li ntau cov thawv ntim khoom.Silk: siv rau lub qhov rai npo, yoov yoov , hlua thiab lwm yam.

Lub raj mis qeb:zaub mov, tshuaj thiab cov tshuaj pleev ib ce ntim khoom ntim.

Txhaj tshuaj:cov yeeb nkab fittings, qhov ntsuas dej, chaw ua haujlwm siv khoom thiab vaj tsev hluav taws xob, thiab lwm yam.

2) daim ntawv thov ntawm cov khoom muag PVC muag

Zaj duab xis:kev cog qoob loo tsev cog khoom, ntim zaj duab xis, zaj duab xis nag, thiab lwm yam.

Cable:siv rau nruab nrab thiab tsis tshua muaj hluav taws xob rwb thaiv tsev lub thawv sheathed cable khoom.Footwear: soles thiab tiav.

Tawv:cov tawv ntoo tawv, cov tawv ntoo hauv av thiab cov ntawv ntsa, thiab lwm yam .Others: cov leeg pob tshab, cov ntaub ntawv thiab cov gaskets, thiab lwm yam.