Hauv cov ntawv thov xws li kub nias, hluav taws xob thermal rwb thaiv tsev, thiab Circuit Court board cushioning, nplaim taws retardancy, siab -kub tsis kam, thiab combustion kev ruaj ntseg ntawm cov ntaub ntawv ua npuas ncauj ncaj qha txiav txim siab rhiav hluav taws kub thiab khoom yield. Peb cov ntaub ntawv tseem ceeb muaj nyob rau hauv kev ua lag luam-EVA ua npuas ncauj, EPDM ua npuas ncauj, thiab nplaim taws-cov khoom siv silicone ua npuas ncauj- txawv txav ntawm lawv cov nplaim taws ua haujlwm. Hauv qab no yog qhov kev sib piv dav dav uas suav nrog kev ntsuas kev sib tsoo, siab - tus cwj pwm kub, kev haus luam yeeb, thiab cov xwm txheej siv tau.
Ib. EVA ua npuas ncauj (tus qauv pheej yig ua npuas ncauj khoom)
Haiv neeg EVA yog cov khoom siv hluav taws kub heev nrog cov pa ntsuas huab cua tsuas yog 17-19; Cov qauv tsis hloov pauv raws li UL94 HB qhov ntsuas hluav taws xob. Nws hlawv tsis tu ncua thaum raug cov nplaim taws thiab yaj mus rau hauv cov tee dej uas tuaj yeem cuam tshuam cov vaj huam sib luag thiab cov cuab yeej siv, tso cov pa luam yeeb ntau thiab cov tshuaj lom tsis haum thaum sib xyaw.
Txawm hais tias cov nplaim hluav taws raug ntxiv los tsim hluav taws kub hloov- tiv thaiv EVA, nws tsuas yog ua tiav V-1/V-0 qhov ntsuas ib ntus thiab muaj qhov tsis zoo: nyob rau hauv qhov ntev raug rau qhov kub siab tshaj 80 degree, cov nplaim hluav taws xob sab hauv yuav maj mam leaches tawm, ua rau cov nplaim hluav taws kub hnyiab tau sai heev ntawm qhov kub siab tshaj 120 degree, cov khoom softens thiab shrinks, ua rau nws tag nrho unsuitable rau lub nruam high-temperature ua hauj lwm tej yam kev mob ntawm PCB kub presses (tshaj 200 degree).
Qhov zoo dua yog nws tus nqi qis; nws tsuas yog tsim nyog rau ambient - ntim ntim thiab qis - qhov kub thiab txias, thiab txwv tsis pub siv rau hauv siab - cov kab ntau lawm.
2. EPDM (Ethylene Propylene Diene Monomer) ua npuas ncauj (general-lub hom phiaj ua npuas ncauj rau HVAC sealing)
EPDM nta cov qauv molecularly saturated nrog tshwj xeeb huab cua tsis kam thiab ozone kuj. Nws hloov kho version ua tau raws li UL94 V-0 nplaim hluav taws retardancy qauv, tsim ib txheej carbonized uas inhibits hluav taws kis thaum combustion thaum tsim me me yaj tee dej thiab nthuav tawm cov pa luam yeeb tsawg dua EVA.
Txawm li cas los xij, nws muaj qhov txwv siab tshaj plaws rau nws qhov siab - qhov kub thiab txias: qhov ntev - lub sij hawm ruaj khov ua haujlwm kub tsuas yog los ntawm -40℃txog 120 degree, nrog luv -lub sij hawm ncov kub tsis tshaj 175℃. Nruam raug kub siab tshaj 180℃yuav maj mam ua softening thiab poob ntawm elasticity; cov nplaim hluav taws- cov pa roj carbon monoxide yuav ua kom tsis zoo thiab tshem tawm ntawm qhov kub siab tshaj 200 degree, yog li poob nws lub peev xwm tiv thaiv hluav taws.
Feem ntau siv rau cov tshuab cua txias, cov raj xa hluav taws xob thiab kev sib khi, nrog rau luv luv -lub sij hawm qis- daim ntawv thov thermal rwb thaiv tsev; Txawm li cas los xij, nws tsis haum rau siv nrog PCB multilayer boards lossis HDI siab -cov txheej txheem kev sib txuas nrog kub.
EPDM ua npuas ncauj nrog npuas
3. Nplaim taws- retardant foam silicone (cov khoom pom zoo rau PCB xovxwm daim txhuam cev)
Tshwj xeeb tsim los rau siab -kub kev lag luam kev siv, cov khoom ua npuas ncauj no muaj cov qauv tsim qauv uas ua tau raws li qhov siab tshaj plaws ntawm cov nplaim taws retardancy ntawm UL94 V-0, ua rau nws qhov kev xaiv hluav taws kub-resistant tshaj plaws ntawm peb txoj kev xaiv.
Cov yam ntxwv combustion: Nws tus kheej - tua sai sai thaum sib cuag nrog cov nplaim taws hauv 10 vib nas this, nthuav tawm cov pa roj carbonization me ntsis uas tsis muaj molten combustible droplets; tsim cov pa luam yeeb tsawg, yog halogen-dawb thiab tsis yog- tshuaj lom, thiab tsis tso cov pa corrosive uas tuaj yeem ua rau cov ntawv ci tooj liab lossis cov ntawv ci hauv Circuit Court.
High -tej nplaim hluav taws kub- retardant stability: Nws tiv taus qhov kub thiab txias ntawm 200-230℃, thiab txawm luv luv -lub sij hawm hauv zos overheating mus txog 250℃nyob rau hauv ib tug xovxwm tsis ua softening los yog vau. Nws kaw-cov qauv ntawm tes muab cov thermal rwb thaiv tsev ruaj khov; cov nplaim hluav taws-cov khoom siv retardant tsis leaches tawm los yog degrades ntawm qhov kub thiab txias, tsis muaj qhov poob qis hauv hluav taws kub tsis kam tom qab ntau tshaj ib txhiab thermal compression cycles.
Cov txiaj ntsig tseem ceeb: sulfur-dawb thiab dawb los ntawm cov nag lossis daus, muaj kev ua haujlwm siab rau kev rov siv dua thaum ua tau raws li peb qhov yuav tsum tau ua - nplaim taws retardancy kev nyab xeeb, sib npaug siab buffering, thiab siab -kub tsis kam- ua kom nws zoo kawg nkaus haum rau siab -kev nyab xeeb cov khoom siv hluav taws xob 5} xws li PCB.