High-density polyethylene (HDPE), raws li cov crystalline thiab ruaj khov thermoplastic resin, yog ncaj qha cuam tshuam los ntawm nws cov kev cia khoom, uas cuam tshuam rau cov khoom zoo thiab kev ua haujlwm tom qab.Vim nws feem ntau saturated hydrocarbon saw molecular qauv, HDPE nthuav tawm zoo tiv thaiv rau feem ntau cov tshuaj lom neeg. Txawm li cas los xij, thaum lub sijhawm khaws cia, nws tseem yuav tsum tau tiv thaiv kev ua haujlwm tsis zoo los ntawm lwm yam xws li cua sov, lub teeb, oxygen, thiab noo noo kom ntseeg tau tias cov khoom tuav nws lub cev thiab txhua yam khoom thiab cov yam ntxwv thaum siv.
Thawj qhov yuav tsum tau muaj rau qhov chaw cia khoom yog tswj kom zoo ntawm qhov kub thiab txias. HDPE yuav tsum muab cia rau hauv qhov chaw txias, qhuav, thiab zoo -ventilated warehouse. Qhov pom zoo ambient kub yog nyob nruab nrab ntawm 10-30 degree, tsis txhob raug mus rau qhov kub siab ntev. Qhov kub thiab txias ua rau lub thermo-oxidative degradation ntawm molecular chains, ua rau kom nce yaj Performance index, darkening ntawm cov xim, thiab txo cov khoom siv kho tshuab. Cov av noo txheeb ze yuav tsum tau tswj qis dua 50% txhawm rau tiv thaiv granules los ntawm absorbing noo noo. Txawm hais tias HDPE nws tus kheej tsis tshua muaj hygroscopicity, qhov dej noo tuaj yeem vaporize ntawm qhov kub ua haujlwm siab, ua npuas lossis nyiaj streaks, cuam tshuam rau cov tsos thiab sab hauv zoo ntawm cov khoom.
Kev tswj lub teeb kuj tseem ceeb heev. HDPE yog rhiab heev rau ultraviolet (UV) hluav taws xob. Kev raug tshav ntuj ntev lossis muaj zog UV qhov chaw tuaj yeem ua rau daim duab -oxidation, ua rau cov khoom maj mam ua daj thiab daj. Yog li ntawd, cov chaw cia khoom yuav tsum tau ntxoov ntxoo los yog muaj lub teeb xa hluav taws xob tsawg. Qhov no tuaj yeem ua tiav siv cov hnab ntim khoom opaque, txheej txheej hauv zaj duab xis, lossis npog cov rhawv nrog blackout tarpaulins kom txo tau cov hnub ci ncaj qha. Rau cov ntaub ntawv raw uas yuav tsum tau ntev - khaws cia, nws raug nquahu kom ntxiv cov nqi tsim nyog ntawm lub teeb stabilizers thiab antioxidants rau cov qauv los txhim kho huab cua tiv thaiv; Txawm li cas los xij, txo qhov pom kev pom thaum lub sijhawm khaws cia tseem yog qhov ntsuas tseem ceeb.
Kev tshawb fawb thiab tsim nyog stacking thiab ntim txoj kev yog qhov tseem ceeb. HDPE feem ntau yog muab rau hauv daim ntawv granular thiab yuav tsum tau ntim rau hauv cov dej noo- pov thawj, plua plav- pov thawj, thiab lub hnab muaj zog lossis lub hnab ntim hnyav nrog cov ntsaws ruaj ruaj kom tiv thaiv cov khoom txawv teb chaws nkag. Thaum stacking, tsis txhob hnyav hnyav los tiv thaiv deformation. Cov pawg qhov siab yuav tsum tau tsim raws li kev ntim khoom thauj khoom- cov kabmob muaj peev xwm thiab lub tsev khaws khoom hauv pem teb cov khoom thauj -cov kabmob muaj peev xwm, feem ntau tsis tshaj 2 meters. Txoj kev txaus yuav tsum tau nyob nruab nrab ntawm pawg rau kev tshuaj xyuas thiab qhov cua. Cov qib sib txawv ntawm HDPE lossis cov uas muaj qhov sib txawv ntawm qhov ntsuas kub sib txawv yuav tsum tau muab cais thiab sau kom meej meej kom tsis txhob siv thiab ua qhov tsis sib haum xeeb.
Kev tswj lub sijhawm khaws cia kuj tseem ceeb heev. Txawm tias nyob rau hauv cov xwm txheej zoo, HDPE yuav maj mam muaj hnub nyoog vim yog qhov ntev ntev ntawm cov pa oxygen. Nws raug nquahu kom ua raws li "thawj-hauv, ua ntej- tawm" lub hauv paus ntsiab lus, ua kom luv luv lub voj voog ntawm cov khoom muag, thiab cov qauv raw cov ntaub ntawv tshaj lawv lub sijhawm cia rau kev sim. Kev siv yuav tsum tsuas yog ua tom qab lees paub tias qhov ntsuas dej ntws, qhov ntom ntom, thiab cov khoom siv tshuab ua tau raws li qhov yuav tsum tau ua. Qhib tab sis tsis siv lub ntim yuav tsum tau muab kaw kom sai thiab khaws cia rau hauv qhov chaw qhuav kom tiv thaiv kom tsis txhob ya raws los yog kis kab mob los ntawm kev raug mus ntev.
Hais txog kev tswj hwm kev nyab xeeb, txawm hais tias HDPE yog cov khoom siv tshuaj lom neeg tsawg, kev haus luam yeeb thiab cov nplaim taws raug txwv nruj heev hauv cov chaw cia khoom. Cov chaw khaws cia yuav tsum tau khaws cia kom deb ntawm qhov chaw tshav kub thiab oxidizers kom tsis txhob muaj hluav taws kub lossis ua kom muaj kev pheej hmoo ntawm kev laus. Cov neeg ua haujlwm yuav tsum hnav cov cuab yeej tiv thaiv tus kheej kom tsis txhob nqus cov plua plav thiab tsis tu ncua xyuas lub tsev khaws khoom kub thiab av noo thiab kev ruaj ntseg ntawm ntim.
Hauv cov ntsiab lus, HDPE cia yuav tsum tsom rau kev tswj qhov kub thiab txias, tiv thaiv kev ya raws, kev tiv thaiv lub teeb, thiab kev tiv thaiv siab, ua ke nrog cov txheej txheem stacking thiab kev tswj hnub tas sij hawm, ntxiv los ntawm kev tsim nyog tsim kev tiv thaiv thiab kev ntsuas kev nyab xeeb. Qhov no yuav ua kom cov khoom ruaj khov zoo los ntawm qhov chaw, muab lub hauv paus txhim khu kev qha rau kev ua haujlwm tom ntej thiab kev siv.
