Qhov txawv ntawm Silicone Rubber thiab EPDM yog dab tsi?

Thaum xaiv cov roj hmab rau kev siv, ntau tus engineers xaus rau kev xaiv ntawm kev xaiv silicone lossis EPDM. Peb pom tseeb tias muaj kev nyiam rau silicone (!) tab sis ua li cas ob qho tib si sib tw? EPDM yog dab tsi thiab yog tias koj pom koj tus kheej xav tau kev xaiv ntawm ob, koj yuav txiav txim siab li cas? Nov yog peb cov lus qhia ceev ceev rau EPDM…

 

EPDM yog dab tsi?

EPDM sawv cev rau Ethylene Propylene Diene Monomers thiab nws yog ib hom roj hmab hluavtaws hluavtaws. Nws tsis tuaj yeem tiv taus cua sov li silicone tab sis tuaj yeem tiv taus qhov kub siab txog 130 ° C. Vim tias qhov ntawd nws tau siv los ua cov khoom siv hauv ntau yam kev lag luam nrog rau kev lag luam, kev tsim kho thiab tsheb. Hauv qhov ntsuas kub qis dua, EPDM yuav ncav cuag qhov taw tes ntawm -40 ° C.

EPDM tseem nrov li cov roj hmab sab nraum zoov vim nws tiv taus huab cua nrog rau cov kua qaub thiab alkali tsis kam. Yog li ntawd, koj yuav pom nws feem ntau siv rau tej yam xws li qhov rais thiab qhov rooj ntsaws ruaj ruaj los yog cov ntaub ntawv waterproofing.

EPDM kuj muaj kev puas tsuaj zoo, txiav kev loj hlob thiab tsim kua muag.

 

Dab tsi ntxiv tuaj yeem muab silicone?
Thaum silicone thiab EPDM sib koom ntau yam xws li kev tiv thaiv ib puag ncig zoo, kuj tseem muaj ntau qhov sib txawv thiab nws tseem ceeb heev kom lees paub cov no thaum txiav txim siab yuav khoom.

Silicone yog ib qho sib xyaw ntawm carbon, hydrogen, oxygen thiab silicone thiab qhov sib tov no muab ntau cov txiaj ntsig uas EPDM tsis ua. Silicone muaj peev xwm tiv taus kub txog li 230 ° C thaum tswj nws lub cev. Dab tsi ntxiv, nws tseem yog cov khoom tsis huv elastomer thiab zoo li yog nrov hauv kev lag luam zaub mov thiab dej haus. Nyob rau hauv qis dua kub silicone kuj tshaj EPDM thiab yuav tsis ncav cuag nkig taw tes txog -60 ° C.

Silicone tseem yog stretchier thiab muab elongation ntau tshaj EPDM. Nws tuaj yeem raug tsim los ua kua muag resistant li EPDM. Ob qho no ua rau nws zoo tagnrho rau kev siv lub tshuab nqus tsev hauv cov tshuab siv los tsim cov hnub ci vaj huam sib luag thiab cov rooj tog laminated, feem ntau hu ua tshuab nqus tsev.

Silicone yog ib qho elastomer ruaj khov dua thiab vim li ntawd cov neeg yuav khoom xav tias silicone zoo dua li kev nyab xeeb rau lub sijhawm ntev dua vim qhov no. Txawm hais tias silicone pom tau tias tus nqi ntau dua ntawm ob, EPDM lub neej feem ntau luv dua li ntawm silicone thiab yog li yuav tsum tau hloov hauv daim ntawv thov ntau zaus. Qhov no ua rau cov nqi mus sij hawm ntev tshaj li ntawm silicone.

Thaum kawg, thaum ob qho tib si EPDM thiab silicone yuav o yog muab tso rau hauv cov roj rau lub sij hawm ntev ntawm qhov kub thiab txias, silicone muaj kev tiv thaiv rau cov khoom noj roj ntawm chav tsev kub uas yog vim li cas nws yog siv nyob rau hauv cov khoom noj roj ua raws li cov ntsaws ruaj ruaj thiab gaskets rau kev machinery.

 

Yuav ua li cas xaiv ntawm ob?
Thaum cov lus qhia luv luv no tsuas yog sau qee qhov sib txawv ntawm ob txoj hauv kev zoo tshaj plaws los txiav txim siab seb cov roj hmab twg koj xav tau yog kom nkag siab lub hom phiaj ntawm kev siv thiab daim ntawv thov. Kev txheeb xyuas seb koj yuav xav siv nws li cas, cov xwm txheej twg nws yuav raug rau thiab koj xav tau nws ua li cas yuav tso cai rau koj kom muaj kev pom ntau dua li cov roj hmab xaiv.

Tsis tas li ntawd, nco ntsoov txiav txim siab txog yam xws li lub zog, yoog raws thiab qhov hnyav ntawm cov khoom yuav tsum tau tiv taus vim cov no tuaj yeem yog qhov tseem ceeb rau kev txiav txim siab. Thaum koj muaj cov ntaub ntawv no peb cov lus qhia dav dav rau Silicone Rubber vs EPDM tuaj yeem muab cov ntaub ntawv tob rau koj los txiav txim siab zaum kawg.

Yog tias koj xav sib tham txog koj qhov project yuav tsum tau nrog peb pab neeg ces ib tug neeg yeej muaj. Tsuas yog hu rau peb.