Li-elastomer tse 5 tse holimo bakeng sa Likopo tsa Gasket le Seal

Li-elastomer ke eng? Lentsoe lena le tsoa lentsoeng "elastic" - e 'ngoe ea litšobotsi tsa motheo tsa rabara. Mantsoe "rabara" le "elastomer" a sebelisoa ka mokhoa o fapaneng ho bua ka li-polymer tse nang le viscoelasticity - e tsejoang hangata e le "elasticity." Litšobotsi tsa tlhaho tsa li-elastomer li kenyelletsa ho tenyetseha, ho hola ho hoholo le motsoako oa ho mamella le ho damping (damping ke thepa ea rabara e etsang hore e fetole matla a mechini ho futhumatsa ha e pepesehetse ho fapoha). Sete ena e ikhethang ea litšobotsi e etsa hore li-elastomer e be thepa e loketseng bakeng sa li-gasket, litiiso, li-isolat ors, le tse ling tse joalo.

Ho theosa le dilemo, tlhahiso ya elastomer e falletse ho tloha ho rabara ya tlhaho e hlahisitsweng ho tloha ho latex ya sefate ho ya ho diphetoho tse entsweng ka boqhetseke haholo tsa ho kopanya rabara. Ha ho thehwa diphetoho tsena, thepa e ikgethang e fihlellwa ka thuso ya di-additi tse kang di-filler kapa di-plasticizer kapa ka ho fapana ha dikarohano tsa dikahare ka hara sebopeho sa copolymer. Phetoho ya tlhahiso ya elastomer e hlahisa menyetla e mengata ya elastomer e ka etswang boqhetseke, ya etswa le ho etswa hore e fumanehe mmarakeng.

E le ho khetha thepa e nepahetseng, motho o lokela ho qala ka ho hlahloba litekanyetso tse tloaelehileng tsa ts'ebetso ea elastomer lits'ebetsong tsa gasket le seal. Ha ba khetha thepa e sebetsang hantle, baenjiniere hangata ba tla tlameha ho nahana ka lintlha tse ngata. Maemo a ts'ebeletso a kang mocheso o sebetsang, maemo a tikoloho, ho kopana ha lik'hemik'hale, le litlhoko tsa mechini kapa tsa 'mele kaofela li hloka ho nahanoa ka hloko. Ho latela ts'ebeliso, maemo ana a ts'ebeletso a ka ama ts'ebetso le tebello ea bophelo ea gasket kapa seal ea elastomer.

Re nahanne ka mehopolo ena, a re hlahlobeng tse hlano tsa li-elastomer tse sebelisoang haholo bakeng sa ts'ebeliso ea gasket le seal.

LIHLATSUO-TSA BUNA-N-NITRILE1

1)Buna-N/Nitrile/NBR

Mantsoe ana kaofela a tšoanang, copolymer ena ea rabara ea maiketsetso ea acrylonitrile (ACN) le butadiene, kapa rabara ea Nitrile butadiene (NBR), ke khetho e tsebahalang eo hangata e hlalosoang ha peterole, oli le/kapa mafura a le teng.

Matlo a ka Sehloohong:

Mocheso o Phahameng o tloha ho ~ -54°C ho isa ho 121°C (-65° – 250°F).
E hanyetsa hantle haholo oli, di-solvent le mafura.
Ho hanyetsa ho kgohlopa ho hotle, phallo e batang, ho hanyetsa ho taboha.
E kgethwa bakeng sa ditshebediso tse nang le Naetrojene kapa Helium.
Ho hanyetsa mahlaseli a kotsi a UV, ozone le ho fifala ha letsatsi.
Ho hanyetsa ha ketone le chlorine hydrocarbons ho fokola.

Hangata e sebelisoa ho:

Litšebeliso tsa ho sebetsana le mafura a lifofane le likoloi

Litšenyehelo tse Lekaneng:

Tlase ho isa ho Bohareng

LIHLATSUO-TSA BUNA-N-NITRILE1

2) EPDM

Sebopeho sa EPDM se qala ka copolymerization ea ethylene le propylene. Monomer ea boraro, e leng diene, e eketsoa e le hore thepa e ka qhibilihisoa ka sebabole. Motsoako o hlahisitsoeng o tsejoa e le ethylene propylene diene monomer (EPDM).

Matlo a ka Sehloohong:
Mocheso o Phahameng o tloha ho ~ -59°C ho isa ho 149°C (-75° – 300°F).
Ho hanyetsa mocheso, ozone le boemo ba leholimo hantle haholo.
Ho hanyetsa hantle lintho tse polar le mouoane.
Litšobotsi tse ntle tsa ho thibela motlakase.
Ho hanyetsa hantle li-ketone, li-acid tse tloaelehileng tse hlapolotsoeng, le li-alkaline.
Ho hanyetsa oli, peterole le parafini ho fokola.
Ho hanyetsa ha matla a li-hydrocarbon tsa aliphatic, li-solvent tsa halogenated, le li-acid tse matla.

E sebelisoa hangata ho:
Tikoloho e Hatselitsoeng/Kamore e Batang
Sistimi ea ho Pholisa Likoloi le Litšebeliso tsa ho Hloekisa Boemo ba Leholimo

Litšenyehelo tse Lekaneng:
Tlase - Bohareng

LIHLATSUO-TSA BUNA-N-NITRILE1

3) Neoprene

Lelapa la neoprene la liraba tsa maiketsetso le hlahisoa ke polymerization ea chloroprene 'me le boetse le tsejoa e le polychloroprene kapa Chloroprene (CR).

Matlo a ka Sehloohong:
Mocheso o Phahameng o tloha ho ~ -57°C ho isa ho 138°C (-70° – 280°F).
Matla a matle a ho thijoa, ho kgohlopa le ho hanela malakabe.
Sete e ntle ea ho hanyetsa meokho le khatello.
Ho hanyetsa metsi hantle haholo.
E hanyetsa hantle ho pepesehela ozone, UV, le boemo ba leholimo hammoho le oli, mafura le metsoako e bobebe.
Ho hanyetsa ho hoholo ha li-acid tse matla, li-solvents, li-ester le li-ketone.
Ho hanyetsa hampe di-chlorine, aromatic, le nitro-hydrocarbons.

E sebelisoa hangata ho:
Litšebeliso tsa Tikoloho ea Metsing
Elektroniki

Litšenyehelo tse Lekaneng:
Tlase

LIHLATSUO-TSA BUNA-N-NITRILE1

4) Silicone

Lirabara tsa silicone ke li-polysiloxanes tsa vinyl methyl polysiloxanes tse nang le polymer e ngata, tse bitsoang (VMQ), tse sebetsang hantle haholo libakeng tse chesang tse thata. Ka lebaka la bohloeki ba tsona, lirabara tsa silicone li loketse haholo lits'ebetso tsa bohloeki.

Matlo a ka Sehloohong:
Mocheso o Phahameng o tloha ho ~ -100°C ho isa ho 250°C (-148° – 482°F).
Ho hanyetsa mocheso o phahameng haholo.
Ho hanyetsa mahlaseli a kotsi a UV, ozone le boemo ba leholimo ka tsela e ikhethang.
E bonts'a ho tenyetseha ho hoholo ha mocheso o tlase oa thepa e thathamisitsoeng.
Litšobotsi tse ntle haholo tsa dielectric.
Matla a fokolang a ho thapolla le ho hanyetsa ho taboha.
Ho hanyetsa ha bonolo dihlapolliso, oli le di-acid tse matla.
Ho hanyetsa mouoane hampe.

E sebelisoa hangata ho:
Lisebelisoa tsa Lijo le Lino
Ditshebediso tsa Tikoloho ya Meriana (Ntle le ho hlwekisa ka mouoane)

Litšenyehelo tse Lekaneng:
E mahareng - E phahameng

LIHLATSUO-TSA BUNA-N-NITRILE1

5) Fluoroelastomer/Viton®

Li-fluoroelastomer tsa Viton® li arotsoe ka lihlopha tlas'a lebitso la FKM. Sehlopha sena sa li-elastomer ke lelapa le entsoeng ka li-copolymer tsa hexafluoropropylene (HFP) le vinylidene fluoride (VDF kapa VF2).

Li-terpolymer tsa tetrafluoroethylene (TFE), vinylidene fluoride (VDF) le hexafluoropropylene (HFP) hammoho le perfluoromethylvinylether (PMVE) tse nang le tse khethehileng li bonoa lihlopheng tse tsoetseng pele.

FKM e tsejoa e le tharollo e kgethwang ha ho hlokahala mocheso o phahameng hammoho le khanyetso ea lik'hemik'hale.

Matlo a ka Sehloohong:
Mocheso o Phahameng o tloha ho ~ -30°C ho isa ho 315°C (-20° – 600°F).
Ho hanyetsa mocheso o phahameng ka ho fetisisa.
Ho hanyetsa mahlaseli a kotsi a UV, ozone le boemo ba leholimo ka tsela e ikhethang.
Ho hanyetsa ha ketone hantle, li-ester tse tlase tsa boima ba limolek'hule.
Ho hanyetsa hampe metsoako e nang le alcohols le nitro
Ho hanyetsa mocheso o tlase hampe.

E sebelisoa hangata ho:
Litšebeliso tsa ho Tiisa ka Metsing/SCUBA
Litšebeliso tsa Mafura a Likoloi tse nang le Matšoenyeho a Phahameng a Biodiesel
Likopo tsa Setifikeiti sa Sefofane ho Tšehetsa Litsamaiso tsa Mafura, Setlolo le Hydroelectric

Litšenyehelo tse Lekaneng:
Holimo

 

 

 


Nako ea poso: Mmesa-15-2020