Qhov txawv ntawm Silicone Roj Hmab thiab EPDM yog dab tsi?

Thaum xaiv cov roj hmab los siv, ntau tus Engineers yuav tsum tau xaiv ntawm silicone lossis EPDM. Peb pom tseeb tias peb nyiam silicone (!) tab sis ob qho no sib phim li cas? EPDM yog dab tsi thiab yog tias koj pom koj tus kheej xav tau xaiv ntawm ob qho no, koj txiav txim siab li cas? Nov yog peb phau ntawv qhia ceev ceev rau EPDM…

 

EPDM yog dab tsi?

EPDM yog ib hom roj hmab uas muaj zog heev. Nws tsis tiv taus kub npaum li silicone tab sis nws tiv taus kub txog li 130°C. Vim li ntawd nws thiaj siv los ua ib feem ntawm ntau yam lag luam xws li kev lag luam, kev tsim kho thiab tsheb. Thaum kub qis dua, EPDM yuav tawg yooj yim thaum kub txog -40°C.

EPDM kuj tseem nrov ua cov roj hmab sab nraum zoov vim nws tiv taus huab cua xws li kua qaub thiab alkali. Yog li ntawd, koj yuav pom nws siv rau cov khoom xws li lub qhov rais thiab qhov rooj foob lossis cov ntawv tiv thaiv dej.

EPDM kuj muaj kev sib txhuam zoo, kev loj hlob ntawm kev txiav thiab kev tsim kua muag.

 

Dab tsi ntxiv uas silicone tuaj yeem muab tau?
Txawm hais tias silicone thiab EPDM muaj ntau yam ntxwv xws li kev tiv thaiv ib puag ncig zoo heev, kuj tseem muaj ntau qhov sib txawv tseem ceeb thiab nws yog ib qho tseem ceeb uas yuav tsum lees paub cov no thaum koj txiav txim siab yuav khoom.

Silicone yog sib xyaw ua ke ntawm carbon, hydrogen, oxygen thiab silicone thiab cov khoom sib xyaw no muab ntau yam txiaj ntsig uas EPDM tsis muaj. Silicone tiv taus cua sov ntau dua, muaj peev xwm tiv taus qhov kub txog li 230 ° C thaum tseem khaws nws cov khoom siv lub cev. Ntxiv mus, nws tseem yog elastomer sterile thiab yog li ntawd nrov hauv kev lag luam khoom noj thiab dej haus. Hauv qhov kub qis dua, silicone kuj tshaj EPDM thiab yuav tsis ncav cuag qhov brittle txog -60 ° C.

Silicone kuj tseem ncab tau zoo dua thiab muab kev ntev dua li EPDM. Nws kuj tseem tuaj yeem tsim kom zoo ib yam li EPDM uas tiv taus kev rhuav. Ob qho tib si no ua rau nws zoo tagnrho rau kev siv ua cov ntaub nqus tsev hauv cov tshuab siv los tsim cov vaj huam sib luag hnub ci thiab cov rooj tog laminated, feem ntau hu ua cov tshuab nqus tsev.

Silicone yog ib qho elastomer ruaj khov dua thiab yog li ntawd cov neeg yuav khoom xav tias silicone zoo dua li kev daws teeb meem ntev dua vim li no. Txawm hais tias silicone raug pom tias kim dua ntawm ob qho tib si, EPDM lub neej feem ntau luv dua li silicone thiab yog li ntawd yuav tsum tau hloov pauv ntau zaus hauv kev siv. Qhov no ua rau tus nqi ntev dua li silicone.

Thaum kawg, thaum ob qho tib si EPDM thiab silicone yuav o yog tias muab tso rau hauv roj rau lub sijhawm ntev ntawm qhov kub siab, silicone muaj kev tiv thaiv rau cov roj zaub mov ntawm chav tsev kub uas yog vim li cas nws thiaj siv rau hauv kev ua cov roj zaub mov ua cov foob thiab gaskets rau cov tshuab ua.

 

Yuav xaiv li cas ntawm ob qho no?
Txawm hais tias phau ntawv qhia luv luv no tsuas yog piav qhia qee qhov txawv ntawm ob qho no, txoj hauv kev zoo tshaj plaws los txiav txim siab seb koj xav tau roj hmab twg yog nkag siab txog lub hom phiaj ntawm kev siv thiab kev siv kom raug. Kev txheeb xyuas seb koj xav siv nws li cas, nws yuav raug rau cov xwm txheej twg thiab koj xav kom nws ua haujlwm li cas yuav ua rau koj muaj kev pom tseeb dua txog kev xaiv roj hmab twg.

Tsis tas li ntawd, nco ntsoov xav txog tej yam xws li lub zog, kev ywj pheej thiab qhov hnyav uas cov khoom siv yuav tsum tau tiv taus vim tias cov no kuj tuaj yeem yog cov yam tseem ceeb rau kev txiav txim siab. Thaum koj muaj cov ntaub ntawv no peb phau ntawv qhia txog Silicone Rubber vs EPDM tuaj yeem muab cov ntaub ntawv tob rau koj los txiav txim siab zaum kawg.

Yog tias koj xav tham txog koj qhov project xav tau nrog ib tus neeg hauv peb pab neeg tham ces peb yeej ib txwm muaj neeg pab koj. Hu rau peb xwb.