Txhua lub tsev noj mov thiab cov khw noj mov vas nthiv hauv khw yog siv cov khob yas pov tseg, vim tias kev siv lub khob yas pov tseg yog yooj yim thiab huv si.
Cia li xav txog nws, muaj cov neeg noj hmo hauv tsev noj mov txhua hnub, tab sis muaj qee leej noj hauv lub tsev noj mov. Yuav ua li cas lawv tuaj yeem muaj sijhawm ntau los ntxuav cov tais diav ib qho los ntawm ib tus, cia nyob ib leeg ntxuav lawv ib leeg rau ib qho? Yog tias cov kab mob sib kis tsis tau ntxuav tawm los ntawm qhov kub thiab txias, lawv tua tsis tau txhua tus. Yog tias lawv tsis mloog, lawv yuav kis tau tus mob, thiab lawv tsis paub.
Vim li no, cov khob yas uas siv tas tau hloov los ua cov khoom siv tais diav hauv ntau lub tsev noj mov. Cov khoom siv pov tseg, tsis txhob rov siv dua, tuaj yeem tshem tawm tus ntoo khaub lig ntawm cov kab mob sib kis tau los ntawm cov ntaub pua rooj uas tsis huv, tiv thaiv tus kab mob ntawm lub qhov ncauj! Nyob rau hauv lub neej niaj hnub no, nws tau dhau los ua cov rooj noj mov yas ua lag luam hauv kev lag luam khoom noj khoom haus ceev ceev, thiab nws kuj tau txais kev pom zoo los ntawm cov tub ntxhais hluas.
Vim tias nws yooj yim thiab ceev, nws tuaj yeem tshem tawm ntau cov kab mob thiab kab mob kis los ntawm kev tsis huv ntawm ntxuav tais diav. Nws kuj yuav zam zam qhov tsis yooj yim tshwm sim los ntawm kev ua haujlwm ntawm kab mob ua kom zoo nkauj tshuab. Pov tseg, yooj yim thiab huv si. Zam ntau cov khoom lag luam uas tsis tsim nyog los ntawm cov tuam txhab tsis tsim nyog. Xaiv lub khob yas pov tseg, lub khob yas uas siv tas pov tseg, cov khob yas siv pov tseg thiab cov quav nyab uas tsim los ntawm cov chaw tsim khoom. Tam sim no yog qhov kev loj hlob ntawm kev kub ceev, nrawm nrawm xyoo ntawm lub neej, yog li cov yas siv pov tseg.
Kev tsim cov khoom noj khoom haus kev lag luam muaj ntau heev.
Puas yog PP lub thawv noj su pov tseg tsis muaj mob thiab ib puag ncig?
Ua ntej tshaj plaws, tiag tiag yas yas nws tus kheej yog cov khoom noj qab nyob zoo, ib puag ncig. PP yog ib hom yas, lub npe scientific yog polypropylene. Nws yog ib hom linear polymer nrog qhov siab ntom ntom, tsis muaj cov saw sab thiab siab crystallinity.
PP muaj cov khoom zoo xws li melting tsis kam, roj tsis kam, tsis muaj zog acid tsis kam, tsis muaj zog alkali tsis kam, siab nkag tsis kam thiab kev ntxhov siab muaj peev xwm ua tau zoo, zoo heev hnav tsis kam, tus kheej lubrication, qaug zog thiab lwm yam. Yog tias lub khob ua los ntawm polypropylene tsis muaj tshuaj lom, qhov ntsuas kub (℃) yog 180 ~ 240. Yog li cov dej npau, zaub mov kub yuav tsis ua rau nws ploj mus.
Raws li kev sojntsuam, qhov hu ua PP yas pov tseg cov thawv ntim su ntawm lub khw muag khoom tsis yog tag nrho cov ntaub ntawv PP. Tus neeg sau xov xwm taug kev mus rau hauv cov lag luam wholesale lub thawv yas noj su thiab pom txhua hom PP thawv thawv su. Tom qab nug, nws pom tias muaj kev cuam tshuam loj heev. Tom qab kuaj xyuas qhov laj thawj, tus thawj coj tau muab cov lus piav qhia li no: "ua ntej, cov tuam txhab tsim khoom sib txawv, thiab tus nqi ntawm lub hom yog txawv ntawm cov khoom lag luam. Ntxiv mus, qee lub thawv noj su sau nrog PP cov ntaub ntawv tsis yog PP cov ntaub ntawv, lossis qee cov ntaub ntawv yog PP, thiab qee qhov siv PS lossis PP PVC siv nyob rau qee qhov chaw, yog li tus nqi yuav txawv. "Tus thawj coj kuj hais tias yog tias koj siv nws tus kheej, koj tuaj yeem xaiv lub hom muaj cov paib ua tiav. Yog lawm, tus nqi kuj tseem siab dua.
Nyob rau hauv lub ntsej muag ntawm tsis sib xws zoo ntawm PP pov tseg thawv noj su, summed li ob peb yooj yim kom paub qhov txawv tswv yim. Ua ntej tshaj, cov khoom siv tuaj yeem raug txiav txim los ntawm qee qhov kev hnov, xws li seb puas muaj tus ntxhiab tsw peculiar thaum hnov ntxhiab, thiab seb tus kov puas du thiab txhav thaum kov. Lub thawv noj su PP tiag tiag yog tus, pob txha thiab tsis muaj ntxhiab. Yog tias muaj qhov pom tseeb "yas hnov tsw" thiab nws yog muag muag heev, nws tsis pom zoo kom siv nws.
Tsis tas li ntawd, nrog qhib hluav taws ntawm cov khoom sib txuas, muaj cov hmoov av dub zoo li PVC lossis PS, thiab PP tsis yog.
Thaum kawg, yog tias koj tsis paub tias yuav ua li cas thiaj paub qhov txawv, txoj kev ncaj tshaj plaws yog xaiv hom loj loj pov tseg cov thawv noj su nrog lub logo tiav. Muaj ib daim duab peb sab inverted hauv qab ntawm lub thawv noj su, uas yuav qhia meej txog cov khoom tsim khoom lag luam.
Kuv ntseeg tias nrog cov lus qhia no, thaum siv cov thawv noj su pov tseg, koj tuaj yeem them nyiaj ntau dua rau xaiv cov thawv noj su kom zoo thiab ib puag ncig hauv PP.
Sijhawm Tshaj Tawm: Plaub Hlis-16-2021