Dab tsi yog qhovpolyurethane rwb thaiv tsev foams rau hnub ci dej rhaub?
Raws li cov khoom siv thermal rwb thaiv tsev, polyurethane rigid ua npuas ncauj muaj ib txoj hauj lwm irreplaceable nyob rau hauv ntau yam vim nws tsis tshua muaj thermal conductivity thiab yooj yim molding txheej txheem.
Txawm li cas los xij, raws li cov tshuaj tiv thaiv-moulded polymer, nws cov molding shrinkage (lub ntim ntim tom qab ua tiav cov tshuaj molding yog me dua qhov siab tshaj plaws ntim thaum lub sij hawm molding txheej txheem) inevitably dhau los ua ib qho ntawm nws qhov tsis zoo. Lub hav zoov ntawm molding shrinkage feem ntau ua rau qhov kawg ntim ntawm cov npuas dej me dua qhov ntim ntawm cov kab noj hniav, ua rau tev ntawm cov npuas dej thiab lub plhaub, ua rau muaj kev cuam tshuam loj rau cov tsos, cov nyhuv rwb thaiv tsev thiab txawm tias kev pab cuam lub neej ntawm cov khoom.
Yog li ntawd, nyob rau hauv feem ntau daim ntaub ntawv, polyurethane rwb thaiv tsev txheej feem ntau siv ntxiv ua npuas ncauj ntom ntom thiab molding los daws qhov teeb meem no.
Lub hnub ci dej rhaub yog qhov tsis yooj yim rau pwm vim lawv cov qauv tshwj xeeb (lub plhaub nyias thiab liner, cov duab tsis zoo), thiab cov khoom ntim siab yuav ua rau cov nqi nce ntxiv. Tam sim no, kuj tau ua npuas dej siab dawb yog siv, qhov tsis xws luag los ntawm lub plhaub, lub plhaub yog sib cais los ntawm lub plhaub foam, thiab lub tank sab hauv yog deformed. Cov teeb meem saum toj no yog qhov tshwj xeeb tshaj yog thaum lawv tshwm sim ntawm lub qhov ncauj ntawm cov khoom siv cua sov, uas ua rau muaj ntau yam khoom tsis zoo.
Shandong Biqiao pom tau tias txo qis cov nqi ua npuas dej yam tsis muaj kev sib xyaw ua ke nrog cov duab hluav taws xob yog qhov ua ke kom txo tau cov tev ntawm lub plhaub . , qhov tshwm sim ntawm deformation ntawm lub plhaub liner tau txo qis heev.
Polyether composite cov ntaub ntawv rau lub hnub ci dej rhaub yog tsim los ntawm polyether, foaming agent, catalyst, foaming agent thiab lwm yam khoom. Raws li cov neeg ua npuas ncauj sib txawv, lawv tuaj yeem muab faib ua hom fluorine siab, fluorine-free 141b type, fluorine-free all-water type, etc. Ob peb hom.
Feem ntau cov polyether muaj pes tsawg leeg yog lub teeb daj los yog xim av-liab pob tshab kua uas tsis muaj coagulation, tuab teeb meem los yog unevenness, thiab tsis muaj txhua yam impurities.