Dab tsi yog qhov laj thawj kev laus rau cov khoom siv roj hmab sealing nplhaib khoom?

Thaum qee cov neeg siv cov roj hmab sealing nplhaib, lawv tau ntsib qhov tawg thiab tawv ntawm lub nplhaib sealing. Dab tsi yog vim li cas rau kev laus ntawm cov khoom ntawm cov khoom siv roj hmab sealing nplhaib? Kev laus ntawm cov roj hmab sealing rings yuav ua rau ib co sealing rings poob sealing nyhuv.

Roj hmab foob nplhaib yog ua los ntawm cov khoom siv roj hmab. Dab tsi yog vim li cas rau kev laus ntawm cov khoom siv roj hmab foob nplhaib khoom? Nyob rau hauv cov txheej txheem ntawm cov roj hmab sealing nplhaib, vim muaj kev ua tiav ntawm cov khoom siv sab hauv thiab sab nraud, lub cev thiab cov khoom siv tshuaj lom neeg thiab cov khoom siv ntawm cov roj hmab maj mam deteriorate, ua rau poob ntawm kev siv tus nqi. Qhov kev hloov no hu ua roj hmab aging. Haisheng cov ntsaws ruaj ruaj qhia rau koj tias qhov saum npoo yog tawg, nplaum, tawv, softened, hmoov, discolored, pwm, thiab lwm yam. Muaj cov nram qab no yam.

A. Thaum tshav kub kub: qhov kub thiab txias ua rau tawg ntawm cov khoom siv roj hmab ntawm lub nplhaib sealing, ua cov tshuaj oxidation tshuaj tiv thaiv thiab ua kom cov roj hmab oxidation ceev ceev;

B. Lub teeb: lub teeb lub teeb luv dua, lub zog ntau dua. Cov hluav taws xob ultraviolet nrog lub zog siab tuaj yeem rhuav tshem cov roj hmab sealing nplhaib. Ntxiv rau qhov ncaj qha tawg thiab sib txuas ntawm cov roj hmab molecular saw los ntawm lub teeb ultraviolet, cov roj hmab ntawm cov roj hmab foob nplhaib tsim cov dawb radicals vim qhov nqus ntawm lub teeb lub zog, uas ua rau thiab ua kom cov txheej txheem oxidation chain reactions.

C. Oxygen: oxygen muaj dawb radical saw cov tshuaj tiv thaiv nrog cov roj hmab molecules hauv cov roj hmab, thiab cov saw hlau molecular tau tawg los yog hla crosslinked, ua rau muaj kev hloov pauv hauv kev ua haujlwm ntawm cov roj hmab sealing rings. Oxidation yog ib qho tseem ceeb ntawm cov roj hmab aging.

D. Ozone: cov tshuaj nquag oxygen ntawm ozone ntau dua thiab ua kom puas tsuaj ntau dua. Nws kuj ua rau cov saw hlau molecular, tab sis cov nyhuv ntawm ozone ntawm roj hmab sib txawv nrog seb cov roj hmab sealing nplhaib yog deformed los yog tsis.

E. Moisture: cov roj hmab sealing nplhaib yog ib qho yooj yim rau kev puas tsuaj thaum huab cua ntub dej raug los nag lossis ntub dej. Qhov no yog vim hais tias cov dej-soluble tshuaj nyob rau hauv cov roj hmab thiab cov dej-soluble pawg yog muab rho tawm thiab yaj los ntawm dej.

F. Mechanical stress: nyob rau hauv qhov rov ua dua ntawm txhua yam kev ntxhov siab, cov saw hlau molecular ntawm lub nplhaib roj hmab foob yuav tawg los ua dawb Tsuen, uas yuav ua rau oxidation saw cov tshuaj tiv thaiv, thiab ozone cracking yog ib qho yooj yim uas tshwm sim nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab. .