Nrog rau txoj kev loj hlob sai ntawm kev lag luam khoom noj khoom haus, cov khoom ntim, raws li lub hauv paus tseem ceeb rau kev ua kom cov zaub mov zoo, khaws cia freshness thaum lub sij hawm ncig, thiab txhim kho cov neeg siv khoom, yog qhov yuav tsum tau ua kom muaj zog ntxiv. High Impact Polystyrene (HIPS), hloov kho polystyrene derivative, nyob hauv txoj haujlwm tseem ceeb hauv kev ntim khoom noj vim nws cov khoom siv zoo heev, kev hloov pauv tau zoo, thiab tus nqi zoo. Kab lus no yuav pib los ntawm cov khoom siv ntawm HIPS thiab delve rau hauv nws daim ntawv thov kom zoo, cov xwm txheej tshwj xeeb, cov kev sib tw, thiab cov lus qhia kev txhim kho yav tom ntej hauv kev ntim khoom noj, muab cov ntaub ntawv siv rau kev siv thiab kev tshawb fawb hauv cov haujlwm muaj feem xyuam.

I. Core Material Properties of HIPS: Inherent Advantages for Food Packaging

HIPS yog tsim los ntawm kev sib xyaw thiab hloov kho General Purpose Polystyrene (GPS) nrog cov roj hmab elastomers xws li butadiene. Cov txheej txheem kev hloov kho no pab daws cov teeb meem ntawm GPS, xws li siab brittleness thiab kev cuam tshuam tsis zoo, thaum khaws ntau yam khoom zoo ntawm polystyrene-raws li cov ntaub ntawv, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev ntim khoom noj. Nws cov khoom tseem ceeb yog feem ntau cuam tshuam hauv cov hauv qab no.

(A) Cov cuab yeej cuab tam zoo heev los ua kom muaj kev nyab xeeb ntawm kev thauj khoom noj

Qhov cuam tshuam lub zog ntawm kev hloov kho HIPS yog 3-5 npaug siab dua li ntawm GPS, thiab nws tuaj yeem tswj xyuas qhov cuam tshuam zoo tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias. Cov cuab yeej no tseem ceeb heev rau kev tiv thaiv cov khoom noj los ntawm kev sib tsoo thiab kev sib tsoo thaum caij tsheb thauj mus los. Nyob rau tib lub sijhawm, HIPS muaj qhov tawv tawv zoo thiab flexural tsis kam, yog li cov thawv ntim khoom tsim los ntawm nws, xws li cov thawv noj su thiab cov tais, tsis yooj yim deformed, uas tuaj yeem tswj cov khoom zoo ntawm cov zaub mov zoo thiab tsis txhob muaj cov khoom noj los yog lwj los ntawm kev ntim khoom. Tsis tas li ntawd, HIPS muaj qhov nruab nrab ntawm qhov tawv tawv thiab kev khawb zoo, uas tuaj yeem txo qhov kev puas tsuaj tshwm sim los ntawm kev sib txhuam thaum ncig thiab txhim kho lub txee rov hais dua ntawm cov khoom.

(B) Kev ua tau zoo heev thiab tuaj yeem ua tau raws li qhov xav tau ntim ntau yam

HIPS muaj cov thermoplasticity zoo thiab zoo heev yaj fluidity, thiab tuaj yeem hloov mus rau ntau yam kev siv thev naus laus zis xws li kev txhaj tshuaj molding, blister molding, thiab extrusion. Nws tuaj yeem tsim sai sai rau hauv cov khoom ntim ntawm cov duab sib txawv thiab cov ntsiab lus tshwj xeeb, xws li nyias - cov hnab ntim khoom noj txom ncauj mus rau tuab - phab ntsa tshiab - khaws cov thawv, thiab los ntawm cov khoom sib txawv - cov khoom noj khoom haus sab hauv kev txhawb nqa rau cov khoom siv pov tseg, txhua yam tuaj yeem tsim tau zoo. Nws muaj qhov dav molding kub ntau thiab lub qhov rais ua haujlwm loj, uas tsis yooj yim rau molding qhov tsis xws luag, thiab muaj lub voj voog luv luv, ua rau nws haum rau loj -scale kev lag luam ntau lawm thiab muaj peev xwm ua tau raws li qhov xav tau loj rau ntim hauv kev lag luam khoom noj. Nyob rau tib lub sijhawm, HIPS muaj qhov adhesion muaj zog ntawm qhov chaw thiab yooj yim rau kev tshaj tawm - ua haujlwm xws li luam ntawv thiab zaj duab xis txheej, uas tuaj yeem nthuav qhia cov ntawv qhia zaub mov, cov khoom noj khoom haus, cov ntaub ntawv hom thiab lwm yam ntsiab lus, txhim kho cov ntaub ntawv kis tau tus mob thiab kev lees paub ntawm lub ntim.

(C) Kev nyab xeeb zoo thiab huv si kom tau raws li qhov xav tau ntawm kev tiv tauj zaub mov

Thawj qhov yuav tsum tau ua ua ntej rau cov khoom ntim khoom noj yog kev nyab xeeb thiab tsis yog - toxicity, ua raws li cov qauv tsim nyog rau cov khoom noj khoom haus. HIPS nws tus kheej muaj kev ruaj ntseg zoo, tsis yooj yim rau decompose ntawm qhov kev pabcuam kub ib txwm, thiab yuav tsis hnov ​​​​mob nrog roj, acid, alkali thiab lwm yam khoom hauv cov khoom noj, thiab nws yuav tsis tsim cov tshuaj phem uas tsiv mus rau hauv cov zaub mov. Tam sim no, zaub mov-qib HIPS uas ua tau raws li lub teb chaws cov qauv tau dhau qhov kev ntsuam xyuas kev nyab xeeb, xws li GB 4806.6-2016 "National Food Safety Standard for Plastic Resins in Contact with Food", thiab tuaj yeem siv nyab xeeb rau hauv cov xwm txheej ntim khoom noj ncaj qha. Tsis tas li ntawd, HIPS muaj qee qhov kev tiv thaiv roj thiab dej tsis kam, uas tuaj yeem muab kev tiv thaiv ib puag ncig rau cov zaub mov thiab qeeb oxidation thiab lwj ntawm cov zaub mov.

(D) Kev Lag Luam Tus Nqi Tau Zoo los txhim kho tus nqi-Kev ua tau zoo ntawm ntim khoom noj

Piv nrog rau siab - cov khoom ntim khoom kawg xws li polycarbonate (PC) thiab polyethylene terephthalate (PET), HIPS muaj ntau cov khoom siv raw, cov txheej txheem ntau lawm, thiab cov nqi tsim khoom tsawg. Nyob rau hauv qhov tseeb hais tias kev ntim khoom ua tau raws li cov kev cai tiv thaiv zaub mov, siv HIPS ua cov khoom ntim tuaj yeem txo cov nqi ntim khoom lag luam thiab txhim kho kev lag luam kev sib tw ntawm cov khoom. Tshwj xeeb tshaj yog nyob rau hauv cov teb rhiab rau tus nqi xws li cov khoom ntim khoom pov tseg thiab nruab nrab - mus rau - qis- ntim khoom noj, tus nqi zoo ntawm HIPS yog qhov tseem ceeb dua.

II. Daim ntawv thov tshwj xeeb ntawm HIPS hauv Kev ntim khoom noj

Raws li cov saum toj no- tau hais txog cov khoom zoo heev, HIPS muaj ntau yam kev thov hauv thaj chaw ntim khoom noj, suav nrog ntau qhov txuas los ntawm cov ntim thawj mus rau cov ntim khoom thib ob. Cov hauv qab no yog ob peb yam kev siv.

(A) Cov khoom ntim khoom pov tseg pov tseg

Cov thawv ntim khoom pov tseg yog ib qho tseem ceeb tshaj plaws ntawm daim ntawv thov ntawm HIPS hauv cov ntim khoom noj, nrog rau cov thawv ntim khoom noj ceev, cov tais diav, sushi thawv, pastry thawv, thiab lwm yam. Cov thawv ntim khoom zoo li no muaj qee qhov kev xav tau rau kev cuam tshuam, tawv thiab kub tsis kam ntawm cov khoom, thiab HIPS tuaj yeem ua tau raws li cov kev xav tau no. Piv txwv li, thaum lub sij hawm xa zaub mov ceev, cov thawv noj su ua los ntawm HIPS tuaj yeem tiv taus qee qhov kev hloov pauv kub (feem ntau tuaj yeem tiv taus qhov kub ntawm 60-80 degree), thiab tsis yooj yim rau deform lossis muag vim tuav cov zaub mov kub. Nyob rau tib lub sijhawm, lawv cov kev cuam tshuam zoo tuaj yeem tiv thaiv lub thawv noj su los ntawm kev tawg thaum lub sijhawm thauj mus los thiab ua kom muaj kev ncaj ncees ntawm cov zaub mov. Tsis tas li ntawd, HIPS lub thawv noj su muaj lub ntsej muag du, uas yooj yim los ntxuav (tsis muaj kev tu ib zaug), thiab tuaj yeem luam tawm nrog cov qauv zoo nkauj thiab cov ntawv nyeem los txhim kho cov duab ntawm cov khoom noj ceev.

(B) Ntim cov tais thiab cov kev txhawb nqa sab hauv rau cov khoom noj txom ncauj

Rau cov khoom noj txom ncauj xws li qos yaj ywm chips, biscuits, txiv ntseej, thiab khoom qab zib, cov tais lossis cov kev txhawb nqa sab hauv feem ntau yog siv los kho thiab tiv thaiv kom tsis txhob muaj cov khoom noj los ntawm kev co thiab tawg hauv lub ntim. Nrog nws cov moldability zoo thiab nruj, HIPS tuaj yeem ua rau hauv cov tais ntim quav lossis txhaj tshuaj - molded sab hauv kev txhawb nqa ntawm ntau yam duab, uas haum zoo nrog cov duab ntawm cov zaub mov thiab ua lub luag haujlwm zoo thiab kho lub luag haujlwm. Piv txwv li, cov yas yas txhawb nqa hauv cov qos yaj ywm chips ntim feem ntau yog ua los ntawm HIPS, thiab lawv cov chaw tuaj yeem tsim nrog cov grooves txuam nrog cov qos yaj ywm chips los txhim kho cov qos yaj ywm chips ib los ntawm ib qho, txo qhov kev tawg thaum thauj thiab muag. Nyob rau tib lub sijhawm, HIPS muaj qee qhov kev pom tseeb, thiab cov kev txhawb nqa sab hauv tuaj yeem ua kom pom tseeb ntawm cov zaub mov, txhawb cov neeg siv khoom xav tau.

(C) Lub hau ntim khoom noj thiab cov ntsaws ruaj ruaj

Hauv lub raj mis, cov zaub mov hauv kaus poom lossis cov thawv noj su uas siv tau pov tseg, lub hau thiab cov ntsaws ruaj ruaj yog cov khoom tseem ceeb los xyuas kom meej cov zaub mov nruj thiab tiv thaiv kom tsis txhob muaj kab mob. HIPS muaj qhov ua tau zoo thiab qhov ruaj khov, thiab tuaj yeem ua rau hauv lub hau uas phim lub qhov ncauj ntawm lub thawv kom raug. Nyob rau tib lub sijhawm, nws qhov chaw muaj qhov elasticity nruab nrab, thiab qhov nruj ntawm lub ntim tuaj yeem txhim kho los ntawm kev tsim cov qauv sib khi (xws li lub nplhaib sib khi). Piv txwv li, lub hau ntawm qee lub raj mis yas ntim cov kua txiv hmab txiv ntoo thiab cov hau kev txhawb nqa ntawm cov thawv noj su uas siv tau yog tag nrho ua los ntawm HIPS, uas tsis tsuas yog ua kom lub zog thiab kav ntev ntawm lub hau, tab sis kuj ua tiav cov txiaj ntsig zoo sealing, txuas lub txee lub neej ntawm cov zaub mov.

(D) Tsawg-Cov khoom ntim khoom noj kub kub

Hauv kev ntim khoom noj hauv tub yees thiab khov, qhov qis - qhov kub thiab txias tsis kam ntawm HIPS tau siv tag nrho. Cov ntaub ntawv yas zoo ib yam yog qhov ua rau brittleness thiab txo qhov cuam tshuam tsis zoo nyob rau hauv qis - qhov kub thiab txias ib puag ncig, thaum HIPS tseem tuaj yeem tuav cov khoom siv kho tshuab zoo ntawm qhov kub tsis tshua muaj li ntawm -20℃thiab tsis yooj yim tawg. Yog li ntawd, HIPS feem ntau yog siv los ua cov tais ntim khoom thiab lub thawv rau cov khoom noj khov, xws li cov thawv ntim sab nrauv rau cov pob kws khov thiab cov pob nplej, thiab cov tais zaub mov hauv qhov chaw txias tshiab ntawm cov khw muag khoom noj. Cov pob khoom no tuaj yeem tiv thaiv cov zaub mov zoo thaum lub sijhawm khaws cia thiab kev thauj mus los ntawm qhov kub thiab txias, tsis txhob cuam tshuam cov khoom noj los ntawm kev ntim khoom.

III. Cov kev sib tw ntsib los ntawm HIPS hauv cov ntawv thov ntim khoom noj

Txawm hais tias HIPS muaj ntau yam zoo hauv kev ntim khoom noj, nrog rau kev txhim kho tas mus li ntawm kev lag luam khoom noj khoom haus kev ua tau zoo rau cov khoom ntim thiab cov kev cai ib puag ncig nruj, HIPS kuj ntsib qee qhov teeb meem hauv cov txheej txheem thov.

(A) Kev Ua Haujlwm Tsis Txaus Siab, txwv qee qhov kev thov

HIPS muaj qhov cuam tshuam tsis zoo rau kev ua haujlwm tsis zoo thiab tsis muaj peev xwm tiv thaiv cov pa roj xws li oxygen, dej vapor, thiab carbon dioxide, uas tsis tuaj yeem tiv thaiv kev sib pauv roj thiab ya raws ntawm cov zaub mov thiab ib puag ncig sab nraud. Qhov no ua rau lub neej txee ntawm cov zaub mov ntim hauv HIPS luv luv, thiab nws yog qhov tshwj xeeb tshaj yog tsis tsim nyog rau cov khoom noj uas yuav tsum tau ua kom ntev ntev, xws li nqaij, txiv hmab txiv ntoo thiab zaub, thiab cov khoom ci. Piv txwv li, khob cij ntim rau hauv HIPS ntshiab yog qhov ua rau softening vim absorbing noo noo nyob rau hauv cov huab cua los yog oxidative spoilage vim oxygen ingress. Nws feem ntau yuav tsum tau muab sib xyaw nrog cov ntaub ntawv uas muaj cov khoom thaiv zoo xws li polyethylene (PE) thiab polypropylene (PP) kom tau raws li cov kev xav tau tshiab, uas yuav ua rau cov nqi tsim khoom thiab cov txheej txheem nyuaj ntawm ntim.

(B) Kev Tiv Thaiv Thaum Tshav Kub Kub Kub, Yooj Yim rau Kev Kho Kom Zoo rau siab -Tshav Kub Kub

HIPS muaj qhov kub tsis kam tiv thaiv thiab feem ntau tuaj yeem tiv taus qhov kub ntawm 60-80℃. Thaum nws los rau hauv kev sib cuag nrog kub siab tshaj 100 degree, nws yog ib qho yooj yim mus soften, deform los yog txawm yaj, thiab qhov kev pheej hmoo ntawm kev tso tawm cov teeb meem tshuaj kuj yuav nce. Qhov no ua rau HIPS tsis tuaj yeem siv rau hauv cov xwm txheej ntim khoom noj uas yuav tsum tau siv lub microwave cua sov, thiab tsis tuaj yeem siv los tuav cov khoom noj kub siab - kub tawm ntawm lub lauj kaub, txwv tsis pub nws siv ntxiv rau hauv cov khoom ntim khoom kub. Txawm hais tias qhov kub tsis kam ntawm HIPS tuaj yeem nce ntxiv los ntawm kev ntxiv cov khoom siv hluav taws xob tiv thaiv hluav taws xob, nws yuav ua rau cov khoom siv hluav taws xob nce ntxiv, thiab cov kev hloov pauv tau txwv, ua rau nws nyuaj rau ua kom tau raws li qhov yuav tsum tau ua rau cov cua sov hauv microwave.

(C) Ib puag ncig kev ua tau zoo yuav tsum tau txhim kho, ntsib kev nyuaj siab los ntawm Green Ntim Trend

HIPS yog ib yam khoom uas tsis yog-degradable roj av-raws li cov yas, uas yog ib qho nyuaj rau degrade nyob rau hauv ib puag ncig ntuj tom qab muab pov tseg thiab yooj yim ua rau "dawb paug". Nrog rau kev txhim kho thoob ntiaj teb kev paub txog ib puag ncig, cov teb chaws thoob plaws ntiaj teb tau tshaj tawm cov cai nruj ib puag ncig los txwv kev siv cov yas uas tsis yog -degradable thiab txhawb nqa cov khoom ntim khoom degradable. Piv txwv li, kev ua raws li kev hloov kho "kev txwv txiav yas" hauv kuv lub teb chaws tau txwv tsis pub siv cov khoom siv pov tseg uas tsis yog- cov hnab yas degradable, uas tau ua rau HIPS nyob rau hauv ib puag ncig zoo hauv nws daim ntawv thov hauv kev ntim khoom noj. Txawm hais tias HIPS tuaj yeem rov ua dua thiab rov siv dua, cov txheej txheem rov ua dua siv ntau lub zog thiab muaj tus nqi qis dua, uas tsis tuaj yeem daws qhov teeb meem ib puag ncig.

IV. Kev Txhim Kho Cov Lus Qhia ntawm HIPS hauv Cov Khoom Noj Khoom Noj

Txhawm rau daws cov teeb meem saum toj no thiab txhim kho kev sib tw ntawm HIPS hauv kev ntim khoom noj, kev txhim kho yav tom ntej ntawm HIPS yuav tsom mus rau peb cov lus qhia: kev hloov khoom siv, kev hloov kho ib puag ncig, thiab kev nthuav dav.

(A) Txhim kho kev hloov kho thev naus laus zis los txhim kho cov haujlwm tseem ceeb

Txhim kho qhov kev tiv thaiv kev ua haujlwm thiab kev ua haujlwm kub ntawm HIPS los ntawm kev siv tshuab xws li kev hloov kho sib xyaw thiab kev hloov pauv, thiab nthuav dav nws daim ntawv thov scenarios. Hais txog kev hloov pauv kev cuam tshuam, HIPS tuaj yeem sib xyaw lossis sib xyaw nrog cov khoom siv nrog cov khoom thaiv zoo heev (xws li EVOH, aluminium foil, nano-montmorillonite, thiab lwm yam) los ua ntau- txheej ntim cov ntaub ntawv sib xyaw, uas tsis tsuas yog khaws cov khoom siv kho tshuab thiab kev ua haujlwm zoo ntawm HIPS, tab sis kuj tseem ua kom tau raws li cov khoom ntim khoom kom zoo dua. ntev -lub sij hawm tshiab- khaws zaub mov. Nyob rau hauv cov nqe lus ntawm kev hloov kho cua sov, qhov kub distortion ntawm HIPS tuaj yeem nce ntxiv los ntawm kev ntxiv cov khoom siv xws li iav fiber ntau thiab cov cua sov-resistant resin, lossis los ntawm kev siv cov txheej txheem xws li ntoo khaub lig- txuas kev hloov kho, kom nws tuaj yeem hloov kho rau cov khoom ntim khoom noj nrog qhov kub thiab txias thiab txawm tias qhov ua tau ntawm microwave cua sov.

(B) Kev hloov pauv ib puag ncig los tsim cov khoom lag luam ntsuab

Ua raws li txoj kev loj hlob ntawm cov ntim ntsuab thiab txhim kho HIPS degradable los yog txhim kho cov khoom siv rov ua dua tshiab ntawm HIPS. Ntawm ib sab, cov khoom degradable (xws li polylactic acid PLA, hmoov txhuv nplej siab, thiab lwm yam) tuaj yeem muab ntxiv rau HIPS los npaj ib nrab degradable los yog tag nrho degradable HIPS composite cov ntaub ntawv, txo nws cov pa phem rau ib puag ncig. Ntawm qhov tod tes, txhim kho HIPS cov txheej txheem rov ua dua tshiab, tsim kom muaj lub suab rov ua dua tshiab, thiab txhim kho tus nqi rov ua dua tshiab ntawm HIPS ntim. Piv txwv li, tsim ib qho -cov ntaub ntawv HIPS ntim uas yooj yim rau rov ua dua kom tsis txhob rov ua dua cov teeb meem tshwm sim los ntawm kev sib xyaw ntau yam khoom; Nyob rau tib lub sijhawm, txhim kho kev ua haujlwm ntawm HIPS rov ua dua tshiab los ntawm kev tsim kho thev naus laus zis kom paub txog nws txoj kev siv ncig thiab txo kev cia siab ntawm cov peev txheej roj av.

(C) Kev nthuav dav ua haujlwm kom tau raws li siab -Qhov Kev Xav Tau Kawg

Ua ke nrog qhov siab -qhov kawg xav tau ntawm cov ntim khoom noj los tsim cov khoom ntim HIPS ua haujlwm, xws li tshuaj tua kab mob HIPS thiab ntse HIPS. Nyob rau hauv cov nqe lus ntawm kev hloov kho cov kab mob, cov tshuaj tua kab mob ntuj (xws li chitosan, cov nroj tsuag rho tawm, thiab lwm yam) los yog cov khoom siv tshuaj tua kab mob tuaj yeem ntxiv rau HIPS los npaj cov tshuaj tua kab mob HIPS ntim, uas tuaj yeem cuam tshuam kev loj hlob thiab kev loj hlob ntawm cov kab mob hauv lub ntim, ncua lub txee lub neej ntawm cov zaub mov, thiab tshwj xeeb tshaj yog tsim rau ntim cov zaub mov thiab cov txiv hmab txiv ntoo perishable. Hais txog kev hloov kho ntse, HIPS tuaj yeem ua ke nrog qhov kub thiab txias -sensitive, lub teeb-sensitive thiab lwm yam khoom ntse los npaj HIPS ntim nrog cov khoom noj tshiab qhia txog kev ua haujlwm. Los ntawm kev hloov pauv ntawm cov xim lossis cov duab ntawm lub ntim, qhov tshiab ntawm cov khoom noj tuaj yeem cuam tshuam qhov xav tau, muab cov neeg siv khoom nrog cov ntaub ntawv zoo ntawm cov khoom noj.

V. Xaus

Nrog nws cov khoom siv zoo heev, kev hloov kho tau zoo thiab cov txiaj ntsig zoo, HIPS tau siv dav hauv kev ntim khoom noj, tshwj xeeb tshaj yog ua lub luag haujlwm tsis tuaj yeem hloov pauv hauv cov xwm txheej xws li cov thawv ntim khoom noj thiab cov khoom noj txom ncauj sab hauv. Txawm hais tias nws ntsib cov teeb meem xws li kev ua haujlwm tsis txaus, kev tiv thaiv kev kub ntxhov thiab ib puag ncig, kev siv lub peev xwm ntawm HIPS hauv kev ntim khoom noj tseem yuav tsum tau tshawb nrhiav ntxiv los ntawm kev txhim kho cov lus qhia xws li kev hloov kho thev naus laus zis, kev hloov pauv ib puag ncig thiab kev nthuav dav. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm cov ntaub ntawv tshawb fawb thiab thev naus laus zis thiab kev nce qib ntawm ib puag ncig cov cai, HIPS yuav txuas ntxiv txhim kho nws cov kev ua tau zoo, paub txog kev koom ua ke nrog cov ntim ntim ntsuab, thiab muab cov kev daws teeb meem zoo dua rau kev tsim khoom noj khoom haus.