Terata e thibelang mollo, e bolela terata e nang le maemo a thibelang mollo, hangata tabeng ea teko, ka mor'a hore terata e chesoe, haeba phepelo ea motlakase e khaotsoe, mollo o tla laoloa ka har'a sebaka se itseng, o ke ke oa ata, ka e thibelang mollo 'me o thibele ts'ebetso ea mosi o chefo. Terata e thibelang mollo e le karolo ea bohlokoa ea polokeho ea motlakase, khetho ea thepa ea eona ke ea bohlokoa, 'maraka oa hona joale o sebelisoa hangata lisebelisoa tsa terata e thibelang mollo ho kenyeletsoaPVC, XLPE, rabara ea silicone le thepa ea ho thibela liminerale.
Terata e thibelang malakabe le khetho ea thepa ea cable
Ha indekisi ea oksijene ea thepa e sebelisoang ka har'a thapo e thibelang malakabe e phahame, ts'ebetso ea ho thibela malakabe e ba betere, empa ka keketseho ea indekisi ea oksijene, hoa hlokahala ho lahleheloa ke litšobotsi tse ling. Haeba thepa ea 'mele le thepa ea ts'ebetso ea thepa e fokotsehile, ts'ebetso e thata,' me litšenyehelo tsa thepa lia eketseha, kahoo hoa hlokahala ho khetha indekisi ea oksijene ka nepo le ka nepo, indekisi ea oksijene ea thepa e akaretsang ea ho kenya mocheso e fihla ho 30, sehlahisoa se ka feta litlhoko tsa teko ea sehlopha sa C ho latela maemo, haeba thepa ea ho sheathing le ho tlatsa e le thepa e thibelang malakabe, sehlahisoa se ka fihlela litlhoko tsa Sehlopha sa B le Sehlopha sa A. Terata e thibelang malakabe le thepa ea cable li arotsoe haholo ka thepa e thibelang malakabe ea halogenated le thepa e thibelang malakabe e se nang halogen;
1. Lisebelisoa tse thibelang malakabe tse nang le halogenated
Ka lebaka la ho bola le ho lokolloa ha hydrogen halide ha ho chesoa, hydrogen halide e ka hapa motso o sebetsang oa free radical HO, e le hore ho chesoa ha thepa ho liehe kapa ho tingoe ho fihlela morero oa ho thibela malakabe. Li sebelisoang hangata ke polyvinyl chloride, rabara ea neoprene, polyethylene ea chlorosulfonated, rabara ea ethylene-propylene le lisebelisoa tse ling.
(1) Polyvinyl chloride e thibelang malakabe (PVC): Ka lebaka la theko e tlase ea PVC, ho kenya mocheso o motle le ho thibela malakabe, e sebelisoa haholo terata e tloaelehileng e thibelang malakabe le thapo. E le ho ntlafatsa ho thibela malakabe ha PVC, li-halogen tse thibelang malakabe (decabromodiphenyl ethers), li-paraffin tse nang le chlorine le li-synergic flame retardants hangata li eketsoa foromong ho ntlafatsa ho thibela malakabe ha PVC.
Rabara ea propylene ea ethylene (EPDM): li-hydrocarbon tse seng tsa polar, tse nang le thepa e ntle ea motlakase, khanyetso e phahameng ea ho thibela ho ruruha, tahlehelo e tlase ea dielectric, empa rabara ea propylene ea ethylene ke thepa e tukang, re tlameha ho fokotsa tekanyo ea rabara ea propylene ea ethylene e kopanyang, ho fokotsa ho khaoloa ha ketane ea limolek'hule e bakoang ke lintho tse boima bo tlase ba limolek'hule, e le ho ntlafatsa thepa ea ho thibela malakabe ea thepa;
(2) Mosi o fokolang le thepa e thibelang malakabe a halogen e tlase
Haholo-holo bakeng sa polyvinyl chloride le polyethylene e nang le chlorosulfonated, ho na le lintho tse peli tse lokelang ho kenngoa. Kenya CaCO3 le A(IOH)3 foromong ea PVC. Zinc borate le MoO3 li ka fokotsa ho lokolloa ha HCL le palo ea mosi oa polyvinyl chloride e thibelang malakabe, ka hona li ntlafatsa ho lieha ha malakabe ha thepa, li fokotsa halogen, moholi oa asiti, mosi o tsoang, empa li ka etsa hore index ea oksijene e fokotsehe hanyane.
2. Lisebelisoa tse thibelang malakabe tse se nang halogen
Li-polyolefin ke thepa e se nang halogen, e nang le li-hydrocarbon tse senyang carbon dioxide le metsi ha li chesoa ntle le ho hlahisa mosi o moholo le likhase tse kotsi. Polyolefin e kenyelletsa haholo-holo polyethylene (PE) le li-polymer tsa ethylene – vinyl acetate (E-VA). Lisebelisoa tsena ka botsona ha li na lithibela-mafu, li hloka ho eketsa lithibela-mafu tse sa tloaelehang le lithibela-mafu tsa letoto la phosphorus, e le ho li sebetsana le lintho tse sebetsang tse thibelang mafu tse se nang halogen; Leha ho le joalo, ka lebaka la khaello ea lihlopha tsa polar ketaneng ea limolek'hule tsa lintho tse seng tsa polar tse nang le hydrophobicity, kamano le lithibela-mafu tse sa tloaelehang e fokola, e thata ho e kopanya ka tieo. E le ho ntlafatsa ts'ebetso ea bokaholimo ba polyolefin, li-surfactant li ka eketsoa foromong. Kapa ho polyolefin e kopantsoeng le li-polymer tse nang le lihlopha tsa polar, e le ho eketsa palo ea setlatsetso sa lithibela-mafu, ho ntlafatsa thepa ea mechini le thepa ea ts'ebetso ea thepa, ha ho ntse ho fumanoa lithibela-mafu tse betere. Ho ka bonoa hore terata le cable tse thibelang mafu li ntse li le molemo haholo, 'me tšebeliso e mosa haholo tikolohong.
Nako ea poso: Tshitwe-03-2024