(1)Sesebelisoa sa ho Sireletsa sa Mosi o Tlase o sa Kopanngoeng le Tšepe ea Halogen Polyethylene (XLPE):
Thepa ea ho thibela ea XLPE e hlahisoa ka ho kopanya polyethylene (PE) le ethylene vinyl acetate (EVA) e le motheo oa matrix, hammoho le lintho tse ling tse kang li-halogen-free flame retardants, li-lubricants, li-antioxidants, jj., ka mokhoa oa ho kopanya le ho etsa pelletizing. Kamora ts'ebetso ea mahlaseli a kotsi, PE e fetoha ho tloha sebopehong sa limolek'hule se otlolohileng ho ea sebopehong sa mahlakore a mararo, e fetoha ho tloha thepa ea thermoplastic ho ea polasetiking ea thermosetting e sa qhibiliheng.
Likhoele tsa ho kenya thepa tsa XLPE li na le melemo e 'maloa ha li bapisoa le PE e tloaelehileng ea thermoplastic:
1. Ho hanyetsa ho ntlafetseng ha mocheso, ho ntlafatsa thepa ea mechini mochesong o phahameng, le ho hanyetsa ho ntlafala ha khatello ea tikoloho le ho tsofala ha mocheso.
2. Ho ntlafala ha botsitso ba lik'hemik'hale le ho hanyetsa solvent, phokotso ya phallo ya serame, le ho boloka thepa ya motlakase. Dithempereichara tsa tshebetso ya nako e telele di ka fihla ho 125°C ho isa ho 150°C. Kamora ho sebetswa ha ho hokela, mocheso wa potoloho e kgutshwane wa PE o ka eketswa ho fihla ho 250°C, e leng se dumellang bokgoni bo hodimo haholo ba ho jara motlakase bakeng sa dithapo tsa botenya bo tshwanang.
3. Lithapo tse nang le insulation ea XLPE le tsona li bonts'a thepa e ntle ea mechini, e sa keneleng metsi le e hanelang mahlaseli, e leng se etsang hore li lokele lits'ebetso tse fapaneng, joalo ka terata ea kahare lisebelisoa tsa motlakase, lithapo tsa motlakase, lithapo tsa mabone, lithapo tsa taolo ea matšoao a motlakase o tlase oa likoloi, lithapo tsa terene, lithapo tsa merafo tse sireletsang tikoloho, lithapo tsa likepe, lithapo tsa sehlopha sa 1E bakeng sa lifeme tsa motlakase oa nyutlelie, lithapo tsa pompo tse ka qoelisoang ka metsing, le lithapo tsa phetisetso ea motlakase.
Litaelo tsa hajoale tsa nts'etsopele ea thepa ea ho kenya thepa ea XLPE li kenyelletsa lisebelisoa tsa ho kenya thepa ea ho kenya thepa ea motlakase ea PE e hokahaneng le mahlaseli a letsatsi, lisebelisoa tsa ho kenya thepa ea moea ea PE e hokahaneng le mahlaseli a letsatsi a letsatsi, le lisebelisoa tsa ho kenya thepa ea polyolefin e hokahaneng le mahlaseli a letsatsi tse hokahaneng le malakabe.
(2)Thepa ea ho Sireletsa ea Polypropylene e Amanang le Tšepe (XL-PP):
Polypropylene (PP), e le polasetiki e tloaelehileng, e na le litšobotsi tse kang boima bo bobebe, mehloli e mengata ea thepa e tala, katleho ea litšenyehelo, ho hanyetsa ho bola ha lik'hemik'hale hantle, bonolo ba ho bopa le ho sebelisoa hape. Leha ho le joalo, e na le mefokolo e kang matla a tlase, ho hanyetsa mocheso o fokolang, ho fokotseha ho hoholo ha ho teteana, ho tetebela ha mocheso o tlase, le ho hanyetsa mocheso le oksijene botsofali bo fokolang. Mefokolo ena e thibetse tšebeliso ea eona lits'ebetsong tsa cable. Bafuputsi ba 'nile ba sebetsa ho fetola thepa ea polypropylene ho ntlafatsa ts'ebetso ea bona ka kakaretso,' me mahlaseli a polypropylene e fetotsoeng e kopantsoeng le cross-linked (XL-PP) a hlōtse mefokolo ena ka katleho.
Lithapo tse sireletsang tsa XL-PP li ka fihlela liteko tsa malakabe a UL VW-1 le maemo a terata a 150°C a lekantsoeng ke UL. Litšebelisong tse sebetsang tsa cable, EVA hangata e kopanngoa le PE, PVC, PP, le lisebelisoa tse ling ho lokisa ts'ebetso ea lera la ho sireletsa lithapo.
Bo bong ba mathata a mahlaseli a PP a hokahaneng le cross-linked ke hore a kenyelletsa karabelo ea tlholisano pakeng tsa ho thehoa ha lihlopha tsa qetello tse sa tlalang ka liketso tsa ho senyeha le liketso tsa ho hokahanya pakeng tsa limolek'hule tse susumelitsoeng le li-free radical tse kholo tsa molek'hule. Lithuto li bontšitse hore karolelano ea ho senyeha ha liketso tsa ho hokahanya ho cross-linking ho PP radiation cross-linking e ka ba 0.8 ha ho sebelisoa mahlaseli a gamma-ray. Ho fihlella liketso tse atlehang tsa ho hokahanya ho PP, li-promoter tse hokahanyang li hloka ho eketsoa bakeng sa ho hokahanya ho kopanyang mahlaseli. Ho feta moo, botenya bo sebetsang ba ho hokahanya bo lekanyelitsoe ke bokhoni ba ho kenella ha mahlaseli a elektrone nakong ea mahlaseli. Mahlaseli a lebisa tlhahisong ea khase le foam, e leng molemo bakeng sa ho hokahanya lihlahisoa tse tšesaane empa e fokotsa tšebeliso ea likhoele tse teteaneng.
(3) Sesebelisoa sa ho Sireletsa sa Ethylene-Vinyl Acetate Copolymer (XL-EVA) se hokahantsoeng ka sefapano:
Ha tlhoko ea polokeho ea lithapo e ntse e eketseha, nts'etsopele ea lithapo tse hokahaneng tse se nang malakabe tse se nang halogen e holile ka potlako. Ha e bapisoa le PE, EVA, e hlahisang li-monomer tsa vinyl acetate ka har'a ketane ea limolek'hule, e na le kristale e tlase, e fellang ka ho tenyetseha ho ntlafetseng, ho hanyetsa tšusumetso, ho lumellana ha li-filler le thepa ea ho koala mocheso. Ka kakaretso, thepa ea resin ea EVA e itšetlehile ka litaba tsa li-monomer tsa vinyl acetate ka har'a ketane ea limolek'hule. Boleng bo phahameng ba acetate ea vinyl bo lebisa ho pepeneneng ho eketsehileng, ho tenyetseha le ho tiea. Resin ea EVA e na le ho lumellana ho hoholo ha li-filler le ho hokahana ho hoholo, e leng se etsang hore e ratoe haholo lithapong tse hokahaneng tse se nang malakabe tse se nang halogen.
Resin ea EVA e nang le karolo ea vinyl acetate e ka bang 12% ho isa ho 24% e sebelisoa hangata ho kenya likhoele tsa terata le tsa cable. Litšebelisong tsa 'nete tsa cable, EVA hangata e kopanngoa le PE, PVC, PP, le lisebelisoa tse ling ho lokisa ts'ebetso ea lera la ho kenya likhoele tsa cable. Likarolo tsa EVA li ka khothaletsa ho hokahanya, ho ntlafatsa ts'ebetso ea cable kamora ho hokahanya.
(4) Thepa ea ho Sireletsa ea Ethylene-Propylene-Diene e hokahantsoeng ka Cross-Linked (XL-EPDM):
XL-EPDM ke terpolymer e entsoeng ka ethylene, propylene, le diene monomers tse sa kopanngoang, tse hokahaneng ka ho sebelisa mahlaseli. Lithapo tsa XL-EPDM li kopanya melemo ea lithapo tse koahetsoeng ka polyolefin le lithapo tse tloaelehileng tse koahetsoeng ka rabara:
1. Ho tenyetseha, ho mamella, ho se khomarele mochesong o phahameng, ho hanyetsa botsofali nako e telele, le ho hanyetsa maemo a leholimo a thata (-60°C ho isa ho 125°C).
2. Khanyetso ea ozone, khanyetso ea UV, ts'ebetso ea ho thibela ho ruruha ha motlakase, le khanyetso khahlanong le mafome a lik'hemik'hale.
3. Ho hanyetsa oli le dihlapolli tse tshwanang le ho thibela ho kenngwa ha rabara ya chloroprene ka sepheo se akaretsang. E ka hlahiswa ka ho sebedisa disebediswa tse tlwaelehileng tsa ho sebetsana le ho ntsha metsi a chesang, e leng se etsang hore e be theko e tlase.
Lithapo tse nang le insulation ea XL-EPDM li na le mefuta e mengata ea lits'ebetso, ho kenyeletsoa empa ho sa felle feela ho lithapo tsa motlakase tse nang le motlakase o tlase, lithapo tsa likepe, lithapo tsa ho hotetsa tsa likoloi, lithapo tsa taolo bakeng sa li-compressor tsa sehatsetsing, lithapo tsa ho merafo tse tsamaeang, lisebelisoa tsa ho cheka le lisebelisoa tsa bongaka.
Mathata a maholo a dithapo tsa XL-EPDM a kenyeletsa ho se kgone ho taboha hantle le bokgoni bo fokolang ba ho kgomarela le ho ikgomaretsa, e leng se ka amang tshebetso e latelang.
(5) Thepa ea ho Sireletsa ea Rabara ea Silicone
Rabara ea silicone e na le ho tenyetseha le ho hanyetsa hantle ozone, ho ntšoa ha corona le malakabe, e leng se etsang hore e be thepa e loketseng bakeng sa ho thibela motlakase. Tšebeliso ea eona ea mantlha indastering ea motlakase ke bakeng sa lithapo le likhoele. Lithapo le likhoele tsa rabara ea silicone li loketse haholo ho sebelisoa libakeng tse nang le mocheso o phahameng le tse hlokang matla, tse nang le bophelo bo bolelele haholo ha li bapisoa le likhoele tse tloaelehileng. Litšebeliso tse tloaelehileng li kenyelletsa lienjene tsa mocheso o phahameng, li-transformer, lijenereithara, lisebelisoa tsa elektroniki le tsa motlakase, likhoele tsa ho hotetsa likoloing tsa lipalangoang, le likhoele tsa motlakase le taolo ea likepe.
Hona jwale, dithapo tse sireletsang rabara ya silicone hangata di hokahantswe ka ho sebedisa kgatello ya sepakapaka ka moya o chesang kapa mouoane o nang le kgatello e phahameng. Ho boetse ho na le dipatlisiso tse tswelang pele mabapi le ho sebedisa mahlaseli a di-electron beam bakeng sa rabara ya silicone e hokahanyang, le hoja e so ka e ata indastering ya di-cable. Ka kgatelopele ya moraorao theknolojing ya ho hokahanya mahlasedi, e fana ka mokhoa o mong o theko e tlase, o sebetsang hantle le o sireletsang tikoloho bakeng sa thepa ya ho sireletsa rabara ya silicone. Ka mahlaseli a di-electron beam kapa mehlodi e meng ya mahlasedi, ho hokahanya ho sebetsang hantle ha ho sireletsa rabara ya silicone ho ka fihlellwa ha ho ntse ho dumella taolo hodima botebo le tekanyo ya ho hokahanya ho fihlela ditlhoko tse ikgethang tsa tshebediso.
Ka hona, ts'ebeliso ea theknoloji ea ho hokahanya mahlaseli bakeng sa thepa ea ho kenya rabara ea silicone e na le tšepiso e kholo indastering ea terata le likhoele. Theknoloji ena e lebelletsoe ho fokotsa litšenyehelo tsa tlhahiso, ho ntlafatsa ts'ebetso ea tlhahiso, le ho kenya letsoho ho fokotseng litlamorao tse mpe tsa tikoloho. Lipatlisiso tsa nakong e tlang le boiteko ba nts'etsopele li ka 'na tsa susumetsa tšebeliso ea theknoloji ea ho hokahanya mahlaseli bakeng sa thepa ea ho kenya rabara ea silicone, e leng se etsang hore e sebelisoe haholo bakeng sa ho hlahisa lithapo le likhoele tse mocheso o phahameng, tse sebetsang hantle indastering ea motlakase. Sena se tla fana ka litharollo tse tšepahalang le tse tšoarellang haholoanyane bakeng sa libaka tse fapaneng tsa ts'ebeliso.
Nako ea poso: Loetse-28-2023