He aha ka ʻokoʻa ma waena o Silicone Rubber a me EPDM?

Ke koho ʻana i kahi lāʻau lapaʻau no ka hoʻohana ʻana, nui nā Engineers e pono e hana i kahi koho ma waena o ke koho ʻana i ke silicone a i ʻole EPDM. Loaʻa iā mākou kahi makemake no ka silicone(!) Akā pehea e hoʻohālikelike ai nā mea ʻelua i kekahi? He aha ka EPDM a inā ʻike ʻoe iā ʻoe iho e koho i waena o nā mea ʻelua, pehea ʻoe e hoʻoholo ai? Eia kā mākou alakaʻi wikiwiki i ka EPDM…

 

He aha ka EPDM?

ʻO ka EPDM ke kū nei no Ethylene Propylene Diene Monomers a he ʻano ia o ka ʻōpala synthetic kiʻekiʻe. ʻAʻole hiki ke pale i ka wela e like me ke silicone akā hiki ke kū i nā wela kiʻekiʻe a hiki i 130 ° C. Ma muli o ia mea i hoʻohana ʻia ma ke ʻano he ʻāpana i loko o nā ʻano ʻoihana like ʻole me ka ʻenehana, kūkulu hale a me ka automotive. Ma nā mahana haʻahaʻa, hiki i ka EPDM ke kiko brittle ma -40°C.

He mea kaulana hoʻi ʻo EPDM ma ke ʻano he lāʻau lapaʻau waho no ka mea ʻaʻole i kū i ka wā e pili ana i ka waika a me ke kūpaʻa alkali. No laila, e ʻike maʻamau ʻoe e hoʻohana ʻia ana no nā mea e like me ka puka makani a me nā sila puka a i ʻole nā ​​​​pepa wai.

Loaʻa iā EPDM ka abrasion maikaʻi, ʻoki i ka ulu ʻana a me ke kūpaʻa waimaka.

 

He aha hou aʻe e hiki ke hāʻawi aku i ka silicone?
ʻOiai kaʻana like ʻana o silicone a me EPDM i kekahi mau hiʻohiʻona e like me ke kūpaʻa kūlohelohe maikaʻi loa, aia kekahi mau ʻokoʻa koʻikoʻi a he mea nui e hoʻomaopopo i kēia i ka wā e hoʻoholo ai i kāu kūʻai.

ʻO ka Silicone kahi hui o carbon, hydrogen, oxygen a me silicone a hāʻawi kēia hui i nā pono he nui ʻaʻole i loaʻa iā EPDM. ʻOi aku ka ʻoi aku o ka wela o ka Silicone, hiki iā ia ke kū i nā mahana a hiki i 230 ° C me ka mālama ʻana i kona mau waiwai kino. ʻO ka mea hou aku, he elastomer sterile a no laila kaulana i loko o nā ʻoihana meaʻai a me nā mea inu. Ma nā mahana haʻahaʻa, ʻoi aku ka silicone ma mua o ka EPDM a ʻaʻole hiki i kahi brittle a hiki i -60 ° C.

ʻOi aku ka lōʻihi o ka silicone a hāʻawi i ka elongation ma mua o EPDM. Hiki ke hana ʻia e like me ka waimaka e like me ka EPDM. ʻO kēia mau hiʻohiʻona ʻelua he mea kūpono ia no ka hoʻohana ʻana ma ke ʻano he mau membrane vacuum i nā mīkini i hoʻohana ʻia no ka hana ʻana i nā panela lā a me nā lako laminated, i kapa pinepine ʻia nā mīkini hoʻoheheʻe.

ʻO Silicone kahi elastomer paʻa a ma muli o ka manaʻo o nā mea kūʻai aku ʻoi aku ka maikaʻi o ka silicone ma ke ʻano he hopena paʻa lōʻihi ma muli o kēia. ʻOiai ua ʻike ʻia ka silicone ʻoi aku ka nui o ke kumu kūʻai o nā mea ʻelua, ʻoi aku ka pōkole o ke ola o EPDM ma mua o ka silicone a no laila pono e hoʻololi pinepine ʻia i ka noi. ʻO kēia ka hopena i ke kumukūʻai lōʻihi ma mua o ka silicone.

ʻO ka mea hope loa, ʻoiai ʻo ka EPDM a me ka silicone e pehu inā hoʻokomo ʻia i loko o ka aila no ka manawa lōʻihi i nā mahana kiʻekiʻe, ua kūʻē ke silicone i ka aila meaʻai ma ka lumi wela a ʻo ia ke kumu i hoʻohana ʻia ai i ka hana ʻaila meaʻai e like me nā sila a me nā gaskets no ka mīkini hana.

 

Pehea e koho ai ma waena o nā mea ʻelua?
ʻOiai ʻo kēia alakaʻi pōkole e hōʻuluʻulu wale i kekahi o nā ʻokoʻa ma waena o ʻelua ke ala maikaʻi loa e hoʻoholo ai i ka lāʻau e pono ai ʻoe e hoʻomaopopo i ke kumu o ka hoʻohana ʻana a me ka noi pololei. ʻO ka ʻike ʻana i ke ʻano āu e makemake ai e hoʻohana, he aha nā kūlana e pili ai a pehea ʻoe e pono ai e hoʻokō e hiki ai iā ʻoe ke ʻike maopopo loa i ka lāʻau e koho ai.

Eia kekahi, e noʻonoʻo pono e noʻonoʻo i nā mea e like me ka ikaika, ka maʻalahi a me ke kaumaha e pono ai ka mea e kū ai no ka mea hiki i kēia ke lilo i mea hoʻoholo koʻikoʻi. Ke loaʻa iā ʻoe kēia ʻike, hiki i kā mākou alakaʻi holoʻokoʻa iā Silicone Rubber vs EPDM ke hāʻawi iā ʻoe i ka ʻike hohonu e pono ai ʻoe e hana i kāu hoʻoholo hope.

Inā makemake ʻoe e kūkākūkā i kāu mau koi pāhana me kekahi o kā mākou hui a laila loaʻa kekahi. E hoʻokaʻaʻike wale mai iā mākou.