Kev nthuav dav PVC tuaj yeem siv dua, thiab yog tias muaj, ua li cas?

Kev nthuav dav PVC tuaj yeem rov ua dua tshiab, txawm hais tias cov txheej txheem thiab cov chaw muaj nyob yuav txawv ntawm qhov chaw. Kev rov ua dua tshiab ntawm Expanded PVC feem ntau muaj ob peb kauj ruam:

Sau: Cov neeg siv khoom tom qab lossis tom qab kev lag luam nthuav dav PVC cov khoom raug sau. Qhov no suav nrog cov khoom seem ntawm kev tsim khoom lossis pov tseg kos npe thiab panels.

Kev txheeb: Cov ntaub ntawv sau tau raug txheeb xyuas kom tshem tawm cov kab mob xws li cov nplaum nplaum, cov xim pleev xim, lossis lwm yam khoom tsis yog PVC. Cov kauj ruam no yog qhov tseem ceeb rau kev ua kom zoo ntawm cov khoom siv rov ua dua tshiab.

Shredding: Cov txheej txheem PVC yog ces muab txiav rau hauv me me. Qhov no ua rau thaj tsam saum npoo, ua kom yooj yim rau kev ua haujlwm hauv cov kauj ruam tom ntej.

Ntxuav: Cov khoom siv shredded yog ntxuav kom tshem tawm cov kab mob seem, kom ntseeg tau tias cov khoom siv rov ua tau raws li cov qauv kev lag luam.

Extrusion: Tom qab ntxuav, cov PVC shredded yuav yaj thiab extruded rau hauv pellets. Cov pellets no tuaj yeem siv los tsim cov khoom siv PVC tshiab lossis lwm cov ntawv siv PVC.

Recycling Expanded PVC pab txo cov khoom pov tseg thiab tuaj yeem ua rau cov khoom siv tshiab tsis tas yuav tsum muaj cov peev txheej nkauj xwb, pab txhawb rau lub neej ntev dua.

Thaum siv Expanded PVC hauv kev tsim kho thiab lwm yam kev siv, kev nyab xeeb hluav taws yog qhov tseem ceeb:

Flammability: Expanded PVC feem ntau suav hais tias yog combustible. Nws tuaj yeem ignite thiab hlawv yog tias raug nplaim taws lossis qhov kub thiab txias, ua rau nws tseem ceeb rau kev ntsuas qhov phom sij ntawm nws qhov chaw siv.

Nplaim Retardants: Ntau lub tuam txhab koom nrog cov nplaim hluav taws kub hnyiab rau hauv Exanded PVC formulations los txhim kho nws cov hluav taws kub. Cov additives no tuaj yeem pab ncua qhov hluav taws kub thiab txo cov nplaim taws.

Tsev Codes: Ua raws li cov cai hauv zos yog qhov tseem ceeb. Ntau tus lej xav kom cov ntaub ntawv siv hauv kev tsim kho tau raws li cov qauv kev nyab xeeb tshwj xeeb. Nws yog ib qho tseem ceeb uas yuav tsum tau xyuas kom meej tias qhov nthuav dav PVC siv tau ua raws li cov cai no.

Haus luam yeeb ntau lawm: Thaum kub hnyiab, Exanded PVC tuaj yeem tsim cov pa taws thiab cov pa phem. Kev ntsuas cua kom raug thiab kev nyab xeeb yuav tsum nyob rau hauv qhov chaw kom txo qis kev pheej hmoo ntawm kev noj qab haus huv thaum muaj hluav taws.

Kev xeem thiab ntawv pov thawj: Nrhiav cov khoom uas tau kuaj thiab tau ntawv pov thawj rau kev nyab xeeb hluav taws. Kev ntsuam xyuas xws li ASTM E84