HDPE Qws yuav ploj mus rau qhov sib txawv thaum siv tsis tu ncua hauv qhib- huab cua sab nraum zoov. Qhov no yog tus cwj pwm kev laus ntawm lub cev ntawm cov ntaub ntawv polymer tawm sab nraum zoov thiab tsis yog cov khoom tsis raug. Qhov tseem ceeb, fading tsuas yog cuam tshuam cov xim ntawm lub ntsej muag thiab tsis cuam tshuam rau kev ua haujlwm tseem ceeb, kev ua haujlwm ncaj ncees lossis kev pabcuam lub neej. Cov neeg siv tuaj yeem siv nws nrog kev ntseeg siab. Ultraviolet rays nyob rau hauv tshav ntuj yog lub hauv paus ua rau fading, ib puag ncig tej yam uas tsis muaj cov khoom yas yuav zam tag nrho.
Ultraviolet rays nqa lub zog muaj zog. Ntev - lub sij hawm tsis tu ncua raug rhuav tshem molecular bonds ntawm txheej saum toj kawg nkaus ntawm HDPE Qws thiab rhuav tshem cov xim molecular cov qauv, maj mam decomposing thiab tsis muaj zog deg colorants. Qhov no nws thiaj li ua rau paler xim thiab txo qhov gloss. Sib nrug los ntawm cov kab hluav taws xob ultraviolet, hnub- hmo ntuj qhov kub hloov pauv, nag los ntxuav thiab cua- cov xuab zeb tawg ua kom lub ntsej muag aging thiab fading me ntsis, tab sis lawv yog lwm yam tseem ceeb.
HDPE Rods tsim los ntawm cov txheej txheem sib txawv qhia qhov sib txawv loj hauv sab nraum zoov fading ceev. General- cov hom phiaj rods tsuas yog ua los ntawm cov ntaub ntawv nkauj xwb uas tsis muaj tshuaj tiv thaiv -ultraviolet thiab anti- aging additives yuav plam pom tseeb gloss tom qab 3 mus rau 6 lub hlis ntawm kev tshav ntuj sab nraum zoov tsis tu ncua. Mob me ntsis fading tshwm tom qab 1 mus rau 2 xyoos, nrog cov teeb pom kev zoo ntawm cov xim thiab tsis muaj patchy discoloration. Hauv qhov sib piv, sab nraum zoov- qib HDPE Qws sib xyaw nrog cov kws tshaj lij los tiv thaiv-UV additives thiab huab cua- cov xim tiv thaiv thaum lub sijhawm tsim khoom tuaj yeem thaiv kev puas tsuaj ultraviolet tau zoo thiab ua rau kev laus thiab ploj zuj zus. Tsuas yog kev hloov xim me me tuaj yeem pom pom pom tom qab 3 txog 5 xyoos ntawm kev pabcuam sab nraum zoov.
Nws yog ib qho tseem ceeb kom nco ntsoov tias fading ntawm HDPE Qws rau sab nraum zoov siv yog txwv nruj me ntsis rau cov khoom nto txheej. Nws yog ib qho kev hloov kho kom zoo nkauj ntiav thiab yuav tsis nkag mus rau hauv cov khoom siv ntau. Tom qab fading, tus pas nrig khaws tag nrho cov kev ua tau zoo nyob rau hauv hnav tsis kam, cuam tshuam tsis kam, corrosion kuj, waterproofing thiab siab tsis kam. Nws cov khoom tsim nyob ruaj khov thiab ruaj khov. Tsis muaj cracking, hmoov, embrittlement, deformation los yog laus tsis ua hauj lwm tshwm sim. Cov qauv siv zog thiab kev pabcuam lub neej tseem tsis cuam tshuam.
Tsis tas li ntawd, cov txheej txheem fading mus sib npaug ntawm HDPE Qws. Yuav tsis muaj cov xim poob hauv zos, mottling lossis tev tawm hauv cov khoom tsis zoo -. Nws cov tsos hloov maj mam thiab uniformly. Piv nrog rau cov pas nrig yas ua los ntawm ABS lossis PVC, HDPE muab cov huab cua zoo dua thiab tiv thaiv -fading kev ua haujlwm. Ordinary plastics sai sai tig daj, tawg thiab tev tawm sab nraum zoov, thaum HDPE Qws tsuas yog ploj me ntsis nrog kev ruaj ntseg zoo dua.
Txhawm rau kom tsis txhob fading tag nrho thiab tuav lub ntsej muag tshiab rau lub sijhawm ntev, cov neeg siv tuaj yeem siv HDPE Qws hauv tsev, xaiv sab nraum zoov los tiv thaiv- qib UV, lossis ua raws li niaj hnub tu yooj yim kom txo cov av nkos thiab qeeb aging. Nyob rau hauv tag nrho, me me sab nraum fading yog ib tug yam ntxwv ntawm cov khoom no. Nws tsis cuam tshuam rau daim ntawv thov, ua rau nws raug nqi -profile zoo rau kev ua haujlwm sab nraum zoov.
