PP khoom yog dab tsi? Kev tsom xam ntawm cov khoom, kev siv thiab qhov zoo ntawm cov ntaub ntawv PP
Hauv kev lag luam tshuaj thiab cov ntaub ntawv, "PP yog dab tsi" yog ib lo lus nug ntau, PP yog cov ntawv luv ntawm Polypropylene, yog siv dav siv thermoplastic polymer. Hauv tsab xov xwm no, peb yuav tshuaj xyuas kom meej cov khoom, txheej txheem tsim khoom, thaj chaw thov thiab qhov zoo ntawm cov ntaub ntawv PP los teb cov lus nug ntawm dab tsi yog PP.
1. PP yog dab tsi? Basic tswvyim thiab cov khoom
PP khoom, piv txwv li polypropylene, yog ib qho thermoplastic ua los ntawm propylene monomer los ntawm cov tshuaj tiv thaiv polymerization. Nws muaj cov qauv linear, uas muab nws qhov sib npaug ntawm rigidity thiab toughness nyob rau hauv nws cov khoom vim nws qhov tshwj xeeb molecular saw qauv. Polypropylene muaj qhov ntom ntom ntawm tsuas yog li 0.90 g / cm³, ua rau nws yog ib qho ntawm cov khoom siv yooj yim tshaj plaws, uas ua rau nws zoo tagnrho rau ntau daim ntawv thov.
Polypropylene yog cov tshuaj tiv thaiv tsis tshua muaj zog, nrog kev ua haujlwm zoo rau feem ntau cov kua qaub, hauv paus, ntsev thiab cov kuab tshuaj organic. Nws lub siab melting point (nyob ib ncig ntawm 130-170 ° C) muab PP cov ntaub ntawv zoo stability nyob rau hauv kub kub thiab ua rau lawv tsis tshua muaj deformation. Yog li, PP cov ntaub ntawv yog dav siv nyob rau hauv cov xwm txheej uas yuav tsum tau kub thiab corrosion kuj.
2. Cov txheej txheem ntau lawm ntawm PP cov ntaub ntawv
Kev tsim cov ntaub ntawv PP feem ntau yog nyob ntawm catalyst technology thiab cov txheej txheem polymerization. Cov txheej txheem ntau lawm polypropylene muaj xws li roj-theem polymerization, kua-theem polymerization thiab intrinsic polymerization. Cov txheej txheem polymerization sib txawv cuam tshuam rau qhov hnyav molecular, crystallinity thiab lub cev lub zog ntawm PP cov ntaub ntawv, uas nyob rau hauv lem txiav txim siab lawv daim ntawv thov.
Ntau hom polypropylene, xws li homopolymerised polypropylene (Homo-PP) thiab copolymerised polypropylene (Copo-PP), tuaj yeem tau txais los ntawm kev kho hom catalyst thiab cov tshuaj tiv thaiv thaum lub sijhawm tsim khoom. Homopolymerised polypropylene muaj siab rigidity thiab tshav kub tsis kam, thaum copolymerised polypropylene yog ntau dua nyob rau hauv niaj hnub siv vim nws muaj zog ntau zog.
3. Cov ntaub ntawv tseem ceeb rau PP cov ntaub ntawv
PP cov ntaub ntawv yog siv nyob rau hauv ntau yam kev lag luam vim lawv superior lub cev thiab tshuaj. Nyob rau hauv lub neej txhua hnub, PP yog siv nyob rau hauv kev tsim cov khoom siv hauv tsev, ntim khoom noj, cov kav dej thiab cov khoom ua si, thiab lwm yam hauv kev lag luam, PP yog siv dav hauv kev tsim cov kav dej, cov twj thiab li qub, thiab lwm yam. PP cov ntaub ntawv kuj tseem siv ntau hauv cov khoom siv textiles, cov khoom siv kho mob thiab cov khoom siv tsheb.
Tshwj xeeb tshaj yog nyob rau hauv kev lag luam ntim khoom, PP tau dhau los ua cov khoom nyiam vim nws qhov zoo ntawm cov pob tshab thiab cov cua sov, xws li cov pob tshab ntim khoom noj khoom haus, microwave qhov cub tableware, thiab lwm yam. Kev siv PP cov ntaub ntawv hauv kev kho mob kuj nce ntxiv, tshwj xeeb tshaj yog cov koob txhaj tshuaj pov tseg, cov khoom siv hauv chav kuaj thiab lwm yam khoom uas muaj aseptic siab.
4. PP cov khoom zoo thiab kev cia siab rau kev lag luam
PP cov khoom siv dav dav feem ntau yog vim nws lub teeb yuag, tiv thaiv tshav kub, tshuaj lom neeg thiab kev ua haujlwm zoo.
Los ntawm kev pom kev lag luam, nrog lub tswv yim ntawm kev txhim kho kom ruaj khov thiab kev tiv thaiv ib puag ncig ntsuab, kev ua lag luam xav tau rau PP cov ntaub ntawv yuav nce ntxiv. Polypropylene cov khoom siv rov ua dua tshiab thiab cov yam ntxwv qis carbon emission ua rau nws tseem ceeb hauv ntau daim ntawv thov tshiab, xws li cov khoom siv hluav taws xob tshiab thiab cov khoom siv ib puag ncig.
5. Qhov tsis zoo thiab cov nyom ntawm cov ntaub ntawv PP
Txawm hais tias nws cov txiaj ntsig pom tseeb, PP muaj qee qhov tsis zoo, xws li kev ua haujlwm tsis zoo ntawm qhov kub thiab txias tsis zoo rau UV teeb. Hauv kev siv tswv yim, cov kev tsis txaus no tuaj yeem txhim kho los ntawm kev hloov kho, ntxiv cov tshuaj antioxidants thiab UV-resistant additives. Nrog rau kev tsim cov thev naus laus zis, kev tshawb fawb thiab kev tsim cov bio-based polypropylene thiab cov copolymers ua tau zoo kuj tseem txuas ntxiv mus, qhib qhov muaj peev xwm tshiab rau kev siv cov khoom siv polypropylene.
Xaus
PP khoom yog dab tsi? Nws yog ib qho thermoplastic nrog cov khoom zoo heev thiab ntau yam kev siv. Los ntawm kev txheeb xyuas ntxaws txog nws cov khoom, cov txheej txheem tsim khoom, thaj chaw thov thiab kev cia siab ntawm kev lag luam, peb tuaj yeem pom qhov tsis tuaj yeem hloov pauv ntawm PP cov ntaub ntawv hauv ntau qhov kev lag luam. Nrog rau kev nce qib ntawm kev siv thev naus laus zis thiab kev tiv thaiv ib puag ncig, daim ntawv thov ntawm PP cov ntaub ntawv yuav txuas ntxiv nthuav dav, nqa kev yooj yim dua thiab kev tsim kho tshiab rau kev lag luam niaj hnub thiab lub neej.
Peb cia siab tias los ntawm kev txheeb xyuas cov ncauj lus kom ntxaws ntawm kab lus no, koj muaj kev nkag siab tob txog dab tsi PP yog cov khoom siv.