PVC pobzeb tsis yog cob pobzeb. Cov pobzeb cob yog tsim los ntawm cov khoom siv cob hluavtaws cob. Muaj qhov sib txawv ntawm lawv
1 、 Txheej txheem cej luam ntawm PVC pobzeb thiab cov nplais nplaum:
PVC nplais yog ua los ntawm PVC cob (PVC) yog cov khoom siv tseem ceeb, ntxiv los ntawm UV anti ultraviolet tus neeg sawv cev thiab lwm cov khoom siv tshuaj lom neeg, los ntawm kev sib txig sib txig ntawm science thiab thev naus laus zis. Cov pobzeb PVC tau dhau los ua cov yas pobzeb steel, uas yog lub cim tshiab ntawm cov xim hlau nplais. Lub tshuab txheej txheej ntau txheej txheej yog tsim los ua txheej txheej los tiv thaiv kev laus ntawm cov khoom nto, uas txhim kho weatherability thiab xim tsis ruaj khov, thiab ntxiv ib txheej hnav-tiv taus nyob hauv qab. Nws muaj hluav taws zoo tiv thaiv, tiv taus corrosion, huab cua tsis kam, tsis muaj asbestos, ci xim, kev tiv thaiv ib puag ncig thiab kev noj qab haus huv. Nws yog dav siv nyob rau hauv ru tsev thiab phab ntsa ntawm loj-ncua portal qauv rhiav, uas tsis tsuas yog ua tau los tiv thaiv xeb ntawm lub teeb steel qauv rhiav, tab sis kuj txuag tau steel thiab txo nqi.
Cov pobzeb cob av tau muab faib ua cov nplais ua kom zoo nkauj thiab cov nplais ua hluavtaws zoo. Nws yog hom ntawm cov nplais extruded los ntawm hluavtaws cob pob zeb extrusion khoom. Cov khoom siv ua lag luam nyob hauv kev ua lag luam yog hu ua cov hluavtaws ua cov nplais hluavtaws, thiab txheej txheej saum npoo ntawm cov nplais hluavtaws yog tsim nrog huab cua tiv taus engineering resin ASA. ASA yog cov ternary polymer li ntawm acrylonitrile, styrene thiab roj hmab acrylic. Tam sim no cov khoom siv kho cov nplais hluavtaws yog tsuas yog extruded los ntawm CO extrusion khoom.
2 、 Cov yam ntxwv ntawm PVC pobzeb thiab hluavtaws resin pobzeb
(1) PVC nplais nta:
1. Hais txog nqe, nws pheej yig dua thiab siv tswv yim;
2. Hluav Taws Kub Tsis kam - oxygen index oi ≥ 3, nws belongs rau cov nplaim hluav taws kub retardant cov khoom;
3. Corrosion tsis kam - tshuaj tiv thaiv corrosion, ntau dua 3 zaug ntev dua zinc phaj lub neej;
4. Lub zog thiab toughness - cuam tshuam tsis kam, tensile tsis kam thiab brittleness tsis kam;
5. Huab cua tsis kam - vim yog ntxiv ntawm UV anti ultraviolet tus neeg saib xyuas hauv cov khoom siv, cov khoom muaj peev xwm tiag tiag ua lub luag haujlwm hauv kev tiv thaiv ultraviolet hluav taws xob, nrog lub neej ntev kev pab cuam;
6. Muaj suab nrov tsawg tsawg - lub suab nrov yog qis heev thaum los nag, uas yog ntau dua 30dB qis dua li ntawm cov hlau vov vaj huam sib luag;
7. Qhov chaw nruab tau yooj yim - txhim kho yooj yim thiab tuav, lub sijhawm thiab txuag zog;
8. Kev zoo nkauj - xim yog qaim thiab xim zoo nkauj;
9. Kev tiv thaiv ib puag ncig - tsis muaj asbestos, tsis muaj carcinogenic tshuaj tso tawm.
Qhov tsis zoo 1. Lub siab tsis zoo rau lub teeb thiab kub
2. Lub tshuab ua yaj npau yog ze heev rau qhov kub tsis zoo, yog li nws nyuaj rau kev coj thiab txheej txheem. Cov ntaub ntawv raw ntawm cov nplais hluavtaws nyom tau daws teeb meem los ntawm kev quav ntxiv
3. Nws yog ib qho yooj yim kom ploj thaum siv sab nraum zoov
(2) Cov khoom siv saum npoo ntawm cov nplais hluavtaws ua cov roj ntsha yog ua los ntawm lub teb chaws super siab huab cua resistant engineering cob. Nws muaj qhov ua tau zoo nyob rau hauv ib puag ncig ntuj, txawm tias nws raug rau ultraviolet, av noo, cua sov thiab txias rau lub sijhawm ntev, nws tseem tuaj yeem tswj nws cov xim xim. Raws li cov txiaj ntsig ntawm kev siv sab nraum zoov hauv thaj chaw uas muaj lub hnub ci muaj zog, xws li Arizona thiab Florida, kev hloov pauv xim can e ≤ 5 tuaj yeem lav tau kaum xyoo. Qhov xaus ntawm xenon arc huab cua ntsuas ntawm cov khoom siv kho hluavtaws cov khoom siv yog tau los ntawm irradiating tus qauv nrog 450 hnub ci hauv qhov chaw sib txawv. Zoo heev anti load hluavtaws cob pobzeb (hluavtaws cob pob khoom khoom tsim khoom) muaj cov kabmob zoo muaj peev xwm. Hauv thaj chaw tsis kub, txawm tias lub ru tsev npog nrog daus tag nrho cov xyoo puag ncig, qhov kev puas tsuaj saum npoo thiab pob hluav taws xob ntawm cov nplais hluavtaws tawv yuav tsis tshwm sim. Kev ntsuam xyuas pom tau tias thaum txoj kab kev txhawb nqa yog 660 hli thiab lub nra yog 150 kg, lub pobzeb yuav tsis tawg thiab puas. Lub suab rwb thaiv tsev nyhuv yog qhov zoo. Nws tau raug pov thawj los ntawm kev sim tias cov vuas ua los ntawm cov khoom siv cob hluavtaws muaj cov suab nrov zoo lub suab zoo thaum lawv muaj kev cuam tshuam los ntawm cov suab nrov sab nrauv xws li nag thiab nag. Kev txhim kho zoo corrosion, cob qhia hluavtaws pob zeb tuaj yeem tiv taus cov kua qaub, alkali, ntsev thiab lwm yam tshuaj lom neeg rau lub sijhawm ntev. Cov txiaj ntsig pom tau tias tsis muaj tshuaj lom rau hauv ntsev, alkali thiab acid hauv qab 60% rau 24 teev. Nws yog qhov tsim nyog rau cov kua nag los tiv thaiv thaj chaw thiab chaw ntug hiav txwv. Hluav taws kub tivthaiv hluavtaws tawv pobzeb yog hom khoom siv hluavtaws. Muaj lub tshuab tshwj xeeb me me hauv cov khoom siv cov khoom siv hluavtaws los txhawm rau txhuam cov txheej txheej ASA txheej. Raws li GB 8624-2006 tus qauv, qhov kev ntsuas hluav taws ntawm lub teb chaws tiv thaiv kev tua hluav taws tau siab dua lossis qib B1. Qhov cuam tshuam tsis kam thiab qhov kub tsis kam tiv taus yog qhov zoo, thiab cov hluavtaws cov nplais hluav taws xob muaj qhov muaj zog sab nraud qhov hnyav tau muaj peev xwm, uas tseem muaj feem xyuam rau kev ruaj khov ntawm cov khoom siv cob pob zeb khoom coextrusion. Raws li kev ntsuam xyuas, 1kg steel pob yuav tsis tawg thaum nws ntog los ntawm 3m siab, thiab qhov cuam tshuam ntawm qhov kub tsawg kuj tseem ceeb heev. Peb lub tuam txhab yog cov chaw tsim khoom tsim cov khoom siv ua hluavtaws nyom cov khoom siv nrog kev paub txog 20 xyoo, tshwj xeeb hauv kev tsim cov khoom siv cov nplais hluavtaws cob cov khoom siv.