Yintoni umahluko phakathi kweSilicone Rubber kunye ne-EPDM?

Xa ukhetha irabha oza kuyisebenzisa, iiNjineli ezininzi zigqibela zifuna ukukhetha phakathi kokukhetha i-silicone okanye i-EPDM. Ngokucacileyo sinokukhetha i-silicone (!) kodwa ezi zimbini zihambelana njani? Yintoni i-EPDM kwaye ukuba uzifumana ufuna ukukhetha phakathi kwezi zimbini, uthatha njani isigqibo? Nantsi isikhokelo sethu esikhawulezayo se-EPDM…

 

Yintoni i-EPDM?

I-EPDM imele i-Ethylene Propylene Diene Monomers kwaye luhlobo lwerabha yokwenziwa enobunzima obuphezulu. Ayimelani nobushushu njenge-silicone kodwa iyakwazi ukumelana nobushushu obuphezulu ukuya kuthi ga kwi-130°C. Ngenxa yoko isetyenziswa njengenxalenye kumashishini ahlukeneyo kuquka amashishini, awezakhiwo kunye neemoto. Kumaqondo obushushu aphantsi, i-EPDM iya kufikelela kwinqanaba lokuqhekeka kwi--40°C.

I-EPDM ikwathandwa njengerabha yangaphandle kuba ayichaphazeleki ziimeko ezibangelwa yimozulu, kuquka ukumelana ne-asidi kunye ne-alkali. Ngenxa yoko, uya kuyifumana isetyenziselwa izinto ezifana nezitywino zeefestile kunye neengcango okanye amashiti okuthintela amanzi.

I-EPDM ikwanazo neengxolo ezintle, ukukhula okuncinciweyo kunye nokumelana nokukrazuka.

 

Yintoni enye enokunikelwa yi-silicone?
Nangona i-silicone kunye ne-EPDM zabelana ngeempawu ezininzi ezifana nokumelana nokusingqongileyo okuhle kakhulu, kukwakho nomahluko obalulekileyo kwaye kubalulekile ukuqaphela oku xa usenza izigqibo zakho zokuthenga.

I-Silicone ngumxube wekhabhoni, i-hydrogen, i-oksijini kunye ne-silicone kwaye lo mxube unika iingenelo ezininzi ezingafumanekiyo yi-EPDM. I-Silicone iyakwazi ukumelana nobushushu, iyakwazi ukumelana nobushushu obufikelela kwi-230°C ngelixa igcina iimpawu zayo zomzimba. Ngaphezu koko, ikwayi-elastomer engenazintsholongwane kwaye ngenxa yoko ithandwa kakhulu kumashishini okutya neziselo. Kumaqondo obushushu aphantsi, i-silicone idlula i-EPDM kwaye ayifiki kwinqanaba lokuqhekeka ukuya kuthi ga kwi--60°C.

I-silicone ikwalula kwaye inika ubude obungaphezulu kune-EPDM. Ingakhiwa ukuze ikwazi ukumelana nokukrazuka njenge-EPDM. Zombini ezi zinto ziyenza ifaneleke ukusetyenziswa njenge-vacuum membranes kwiimashini ezisetyenziselwa ukuvelisa iiphaneli zelanga kunye nefenitshala ene-laminated, ezidla ngokubizwa ngokuba ziimashini zokwenza i-vacuum.

I-Silicone yi-elastomer ezinzileyo kwaye ngenxa yoko abathengi bavakalelwa kukuba i-silicone ingcono njengesisombululo esikhuselekileyo sexesha elide ngenxa yoku. Nangona i-silicone ibonwa njengeyona ibiza kakhulu kwezi zimbini, ubomi be-EPDM buhlala bufutshane kune-silicone kwaye ke ngoko kufuneka itshintshwe xa isetyenziswa rhoqo. Oku kubangela ukuba iindleko zexesha elide zidlule ezo ze-silicone.

Okokugqibela, nangona zombini i-EPDM kunye ne-silicone ziya kuvuvukala ukuba zibekwe kwioyile ixesha elide kumaqondo obushushu aphezulu, i-silicone inokumelana neeoyile zokutya kumaqondo obushushu egumbi yiyo loo nto isetyenziswa ekucubungulweni kweoyile yokutya njengezivali kunye nee-gaskets zoomatshini bokucubungula.

 

Ungakhetha njani phakathi kwezi zimbini?
Nangona esi sikhokelo sifutshane sishwankathela nje umahluko phakathi kwezi zimbini, eyona ndlela ilungileyo yokufumanisa ukuba yeyiphi irabha oyifunayo kukuqonda injongo yokusetyenziswa kwayo kunye nokusetyenziswa kwayo ngokuchanekileyo. Ukuchonga indlela oza kufuna ukuyisebenzisa ngayo, zeziphi iimeko eza kuchaphazeleka kuzo kunye nendlela ofuna ukuba isebenze ngayo kuya kukuvumela ukuba ube nombono ocacileyo wokuba yeyiphi irabha omawuyikhethe.

Kwakhona, qiniseka ukuba uqwalasela iinkalo ezinje ngamandla, ukuguquguquka kunye nobunzima obuya kufuneka bumelwane nezixhobo njengoko ezi zinokuba zizinto ezibalulekileyo zokuthatha isigqibo. Xa unalo olu lwazi, isikhokelo sethu esipheleleyo seSilicone Rubber vs EPDM singakunika ulwazi olunzulu olufunekayo ukuze wenze isigqibo sakho sokugqibela.

Ukuba ungathanda ukuxoxa ngeemfuno zeprojekthi yakho nomnye weqela lethu, kukho umntu okhoyo. Qhagamshelana nathi.