TOP 5 Elastomers Maka Ngwa Gasket & Akara
Gịnị bụ elastomers?Okwu a sitere na "elastic" - otu n'ime ihe ndị bụ isi nke roba.A na-eji okwu ndị ahụ "roba" na "elastomer" mee ihe n'otu n'otu iji zoo aka na polymers nwere viscoelasticity-nke a na-akpọkarị "elasticity."Ihe e ji mara nke elastomers gụnyere mgbanwe, elu elongation na nchikota nke resilience na damping (damping bụ ihe onwunwe nke roba na-eme ka ọ gbanwee ike na-arụ ọrụ na-ekpo ọkụ mgbe a na-atụgharị ya).Ụdị ihe a pụrụ iche na-eme ka elastomers bụrụ ihe dị mma maka gaskets, akàrà, isolat ors, na ihe ndị yiri ya.
N'ime afọ ndị gafeworonụ, mmepụta elastomer esiwo na rọba eke e si na latex osisi pụta gaa na mgbanwe rọba arụpụtara nke ukwuu.N'ịmepụta ọdịiche ndị a, a na-enweta ihe ndị a kapịrị ọnụ site n'enyemaka nke ihe mgbakwunye dị ka ihe ndochi ma ọ bụ plasticizers ma ọ bụ site na nha ọdịnaya dị iche iche n'ime nhazi copolymer.Evolushọn nke mmepụta elastomer na-emepụta ọtụtụ ohere elastomer nke enwere ike ịmezi, rụpụta ma mee ka ọ dị n'ahịa.
Iji họrọ ihe ziri ezi, onye kwesịrị ibu ụzọ nyochaa ụkpụrụ nkịtị maka ịrụ ọrụ elastomer na gasket na ngwa akara.Mgbe ị na-ahọrọ ihe dị irè, ndị injinia ga-ejikarị ọtụtụ ihe chebara echiche.Ọnọdụ ọrụ dị ka oke okpomọkụ na-arụ ọrụ, ọnọdụ gburugburu ebe obibi, kọntaktị kemịkalụ, na igwe ma ọ bụ ihe a chọrọ niile kwesịrị ka echebara nke ọma echiche.Dabere na ngwa ahụ, ọnọdụ ọrụ ndị a nwere ike imetụta arụmọrụ na ndụ ndụ nke gasket elastomer ma ọ bụ akara.
N'iburu echiche ndị a n'uche, ka anyị nyochaa ise n'ime elastomer ndị a na-ejikarị arụ ọrụ maka gasket na ngwa akara.
1)Buna-N/Nitrile/NBR
Okwu niile nwere otu okwu, nke a sịntetik roba copolymer nke acrylonitrile (ACN) na butadiene, ma ọ bụ Nitrile butadiene roba (NBR), bụ nhọrọ ewu ewu nke a na-akọwakarị mgbe mmanụ ụgbọala, mmanụ na/ma ọ bụ griiz dị.
Ihe ndị bụ isi:
Oke okpomoku kacha si ~ -54°C ruo 121°C (-65° – 250°F).
Ezigbo mma na-eguzogide mmanụ, ihe mgbaze na mmanụ ọkụ.
Ezigbo nguzogide abrasion, mmiri oyi, nguzogide akwa mmiri.
Mmasị maka ngwa nwere Nitrogen ma ọ bụ Helium.
Nguzogide na-adịghị mma maka UV, ozone, na ihu igwe.
Nguzogide na-adịghị mma maka ketones na chlorinated hydrocarbons.
A na-ejikarị ya na:
Ngwa Aerospace & Akpaaka mmanụ ụgbọala
Ọnụ ego agbakwunyere:
Dị ala ruo Ọkara
2) EPDM
Ngwakọta nke EPDM na-amalite site na copolymerization nke ethylene na propylene.A na-agbakwunye monomer nke atọ, diene, ka e wee jiri sọlfọ mee ihe ahụ.A na-akpọ ogige ahụ ewepụtara dị ka ethylene propylene diene monomer (EPDM).
Ihe ndị bụ isi:
Oke okpomoku kacha si ~ -59°C ruo 149°C (-75° – 300°F).
Okpomọkụ dị oke mma, ozone na nguzogide ihu igwe.
Ezigbo iguzogide ihe ndị polar na uzuoku.
Ezigbo ihe mkpuchi ọkụ eletrik.
Ezigbo iguzogide ketones, acid diluted nkịtị, na alkalines.
Mmanụ, mmanụ ụgbọala na mmanụ ọkụ na-adịghị mma.
Nguzogide na-adịghị mma nke aliphatic hydrocarbons, ihe mgbaze halogenated, na acid gbadoro ụkwụ.
A na-ejikarị eme ihe na:
Gburugburu ụlọ friji/oyi
Sistemụ jụrụ oyi na ngwa na-ewepụ ihu igwe
Ọnụ ego agbakwunyere:
Dị ala - adịghị mma
3) Neoprene
A na-emepụta ezinụlọ neoprene nke rubbers sịntetik site na polymerization nke chloroprene ma marakwa dị ka polychloroprene ma ọ bụ Chloroprene (CR).
Ihe ndị bụ isi:
Oke okpomoku kacha si ~ -57°C ruo 138°C (-70° – 280°F).
Mmetụta dị oke mma, abrasion na ọkụ na-eguzogide ọkụ.
Ezi nguzogide anya mmiri na mkpakọ set.
Mmanya mmiri na-eguzogide.
Ezigbo iguzogide mkpughe nke ozone, UV, na ihu igwe yana mmanụ, griiz na ihe mgbaze dị nro.
Nguzogide na-adịghị mma nke acids siri ike, ihe mgbaze, esters, na ketones.
Nguzogide na-adịghị mma nke chlorinated, aromatic, na nitro-hydrocarbons.
A na-ejikarị eme ihe na:
Ngwa gburugburu mmiri mmiri
Eletrọnịkị
Ọnụ ego agbakwunyere:
Dị ala
4) silicone
Silicone rubbers bụ elu-polymer vinyl methyl polysiloxanes, nke akpọrọ (VMQ), nke na-arụ ọrụ nke ọma na gburugburu ebe okpomọkụ na-ama aka.N'ihi ịdị ọcha ha, rọba silicone dabara nke ọma maka ngwa ịdị ọcha.
Ihe ndị bụ isi:
Oke okpomoku kacha si ~ -100°C ruo 250°C (-148° – 482°F).
Magburu onwe elu okpomọkụ iguzogide.
UV pụtara ìhè, ozone na iguzogide ihu igwe.
Na-egosiputa mgbanwe mgbanwe okpomọkụ dị ala kachasị mma nke ihe ndị edepụtara.
Njirimara dielectric dị mma.
Ike nkwụsịtụ na-adịghị mma na nguzogide anya mmiri.
Nguzogide na-adịghị mma maka ihe mgbaze, mmanụ, na acid gbadoro ụkwụ.
Nguzogide na-adịghị mma maka uzuoku.
A na-ejikarị eme ihe na:
Ngwa nri na ihe ọṅụṅụ
Ngwa gburugburu ọgwụ (ma ewezuga sterilization uzuoku)
Ọnụ ego agbakwunyere:
Dị oke oke - Elu
5) Fluoroelastomer/Viton®
Viton® fluoroelastomer bụ nkewa n'okpuru aha FKM.Klas nke elastomers bụ ezinụlọ nwere copolymers nke hexafluoropropylene (HFP) na vinylidene fluoride (VDF ma ọ bụ VF2).
A na-ahụ Terpolymers nke tetrafluoroethylene (TFE), vinylidene fluoride (VDF) na hexafluoropropylene (HFP) yana perfluoromethylvinylether (PMVE) nwere ọpụrụiche na ọkwa dị elu.
A maara FKM dị ka ihe ngwọta nke nhọrọ mgbe okpomọkụ dị elu yana nguzogide kemịkalụ chọrọ.
Ihe ndị bụ isi:
Oke okpomoku kacha si ~ -30°C ruo 315°C (-20° – 600°F).
kacha mma elu okpomọkụ iguzogide.
UV pụtara ìhè, ozone na iguzogide ihu igwe.
Nguzogide na-adịghị mma na ketones, esters arọ molekụla dị ala.
Nguzogide na-adịghị mma nke mmanya na ogige nwere nitro
Nguzogide na-adịghị mma maka obere okpomọkụ.
A na-ejikarị eme ihe na:
Ngwa Akara mmiri / SCUBA
Ngwa mmanụ ụgbọala na-eme ihe dị elu nke Biodiesel
Ngwa Akara Aerospace na-akwado mmanụ ụgbọala, mmanu mmanu, na sistemụ hydraulic
Ọnụ ego agbakwunyere:
Elu
Oge nzipu: Eprel-15-2020