Li-tubing tsa rabara tsa thermoplastic li sebelisoa haholo tlhahisong ea likoloi, lisebelisoa tsa bongaka, phetisetso ea mokelikeli oa indasteri, le lisebelisoa tsa lapeng ka lebaka la ho tenyetseha ha eona hantle, ho hanyetsa lik'hemik'hale, le ho sebetsa habonolo. Leha ho le joalo, maemo a fapaneng a ts'ebeliso a na le litlhoko tse fapaneng haholo tsa ts'ebetso bakeng sa li-tubing tsa rabara, 'me khetho ea thepa e ama ka kotloloho bophelo ba ts'ebeletso, polokeho le ts'ebetso ea eona. Sengoliloeng sena se sekaseka ka mokhoa o hlophisehileng maano a khetho ea thepa bakeng sa li-tubing tsa rabara ea thermoplastic ho latela maikutlo a thepa, litlhoko tsa ts'ebeliso le mekhoa ea boenjiniere.
Papiso ea Litšobotsi tsa Lisebelisoa tsa Mainstream Thermoplastic Rubber
Thermoplastic rabara (TPR/TPE) ke sehlopha sa lisebelisoa tsa polymer tse kopanyang elasticity ea rabara le melemo ea ho sebetsa ea polasetiki. Mefuta e tlwaelehileng e kenyelletsa styrene-based (jwalo ka SBS, SEBS), olefin-based (jwalo ka TPV), polyurethane-based (TPU), le polyester-based (TPEE).
1. Li-styrene-based thermoplastic elastomers (SBS/SEBS)
SBS (styrene-butadiene-styrene block copolymer) e khetholloa ka theko e tlase le ho feto-fetoha ha maemo, ho etsa hore e lokele-maemo a mocheso a tlase (-40 degrees to 100℃). Leha ho le joalo, e hanyetsana le oli le{7}}ho hanyetsa mocheso o phahameng ha e batla e fokola, 'me e sebelisoa haholo lihlahisoa tsa letsatsi le letsatsi kapa liphaepe bakeng sa{10}}lisebelisoa tse sa hlokahaleng. SEBS (hydrogenated SBS), ka phetoho ea hydrogenation, e ntlafatsa ho hanyetsa botsofali le ho hanyetsa mocheso (ho fihlela ho likhato tse 120), 'me e hanyetsa mahlaseli a ozone le mahlaseli a ultraviolet, a atisang ho sebelisoa lits'ebetsong tsa ka ntle kapa maemo a hlokang botsitso ba nako e telele.
2. Thermoplastic polyolefin (TPV)
TPV (e kang PP/EPDM blends) ke thepa e kopantsoeng ea rabara le polasetiki e matla, e kopanyang elasticity ea rabara le ho tiea ha polasetiki. E boloka matla a mochini mochesong o phahameng (130℃~ 150 degree) mme e na le oli e ntle haholo le ho hanyetsa solvent. Lisebelisoa tse tloaelehileng li kenyelletsa liphaephe tsa enjene ea likoloi le phetisetso ea mokelikeli oa mocheso o phahameng oa indasteri{4}}.
3. Thermoplastic Polyurethane (TPU)
TPU e tsejoa ka matla a eona a holimo, e hanyetsanang le abrasion, le ho hanyetsa oli, ka mefuta e mengata ea ho thatafala (60A ho ea ho 80D), e etsang hore e tšoanelehe bakeng sa maemo a phahameng-, a phahameng{3}}a abrasion (joalo ka li-hoses tsa hydraulic kapa pneumatic systems). Leha ho le joalo, TPU e na le khanyetso e mpe ea hydrolysis 'me e ka senyeha ka tšebeliso ea nako e telele libakeng tse mongobo, e hlokang liaparo tse sireletsang kapa lilara.
4. Thermoplastic Polyester Elastomer (TPEE)
TPEE e kopanya ho tiea ha polyester le ho tenyetseha ha polyether, e bonts'a ts'ebetso e matla ea mokhathala le k'hemik'hale e hanyetsanang le lik'hemik'hale, e etsa hore e tšoanelehe bakeng sa{0}}mekhahlelo ea ho kobeha kapa maemo a dynamic (joalo ka li-hoses tsa robot kapa li-tubes tse hokahanyang lisebelisoa tse nepahetseng). Boemo ba eona ba ho hanyetsa mocheso hangata ke -dikirii tse 40 ho isa ho tse 150 , empa theko ea eona e holimo e fokotsa ts'ebeliso ea eona libakeng tse tlase.
Lintlha tsa Boenjiniere tsa Bohlokoa Bakeng sa Khetho ea Lintho
1. Tikoloho ea Mosebetsi le Tšebelisano ea Mecha ea litaba
• Temperature Range: If the pipeline needs to be exposed to high temperatures (>120℃) bakeng sa nako e telele, ho khethoa TPV kapa TPEE; bakeng sa{1}ticheso e tlase (<-30℃), SEBS or specially formulated TPU are recommended.
• Mecha ea phatlalatso ea lik'hemik'hale: Ha u kopana le oli kapa mafura, TPV le TPU li bontša ho hanyetsa ho ruruha ho molemo ho feta SEBS; bakeng sa ho fetisa metsi a matla a asiti/alkali, ho lokela ho khethoa FPE e fetotsoeng fluorinated TPE kapa PTFE-lined composite tubing.
2. Litlhoko tsa Ts'ebetso ea Mechini
• Ho Hanela Khatello le Matla a ho Phahamisa:-lits'ebetso tse phahameng tsa-tse kang hydraulic lines) li itšetlehile ka TPU kapa TPV e matlafalitsoeng (ka khalase e kentsoeng ka fiber kapa nylon layers).
• Ho feto-fetoha ha maemo: Bakeng sa lits'ebetso tse kenyelletsang ho kobeha khafetsa (joalo ka li-catheter tsa bongaka), -bothata bo tlase ba TPEE kapa SEBS li lokela ho khethoa ho leka-lekanya ho tenyetseha le ho hanyetsa ho lla.
3. Litlhoko tsa Taolo le Setifikeiti: Lefapheng la bongaka, ho hlokahala hore ho lateloe litekanyetso tsa FDA kapa USP Class VI, 'me ho khothaletsoa-bohloeki bo phahameng ba SEBS kapa{2}}grade TPU ea bongaka; li-tubing tsa lijo li tlameha ho kopana le FDA 21 CFR 177.2600 (mohlala, TPR e se nang kotsi ea ho falla); indasteri ea likoloi hangata e hloka lisebelisoa hore li netefatsoe ho latela maemo a LV 312 kapa SAE J20.
Litlhahiso tse Sebetsang le Mekhoa ea Kamoso
Khethong ea lisebelisoa tse sebetsang, ho khothaletsoa ho ntlafatsa liqeto ka mehato e latelang:
1. Hlalosa litekanyetso tsa kopo: Thathamisa matšoao a mantlha a kang mocheso, khatello, mofuta oa mecha ea litaba, le bophelo ba tšebeletso;
2. Teko le netefatso ea thepa: Etsa liteko tse potlakisang tsa botsofali, liteko tsa ho qoelisoa ka lik'hemik'hale, le tlhahlobo ea thepa ea mochini ho lisebelisoa tsa mokhethoa;
3. Tlhahlobo ea litšenyehelo-ea melemo: Lekanya litšenyehelo tsa ho qala ka -litšenyehelo tsa nako e telele tsa tokiso. Ka mohlala, ha TPU e na le yuniti ea theko e phahameng, nako e telele ea ho phela e e etsa hore e tšoanelehe bakeng sa-boleng-lisebelisoa tse ekelitsoeng.
Nakong e tlang, ka ntshetsopele ya bio{{0}based thermoplastic elastomers (jwalo polylactic acid{{1}based TPR) le lisebelisoa tsa nanocomposite, li-hose tsa rabara tsa thermoplastic li tla fihlela katleho molemong oa tikoloho le ts'ebetsong. Baenjineri ba hloka ho lula ba lekola tsoelo-pele ea mahlale a thepa ho fihlela litlhoko tse ntseng li eketseha tsa indasteri.
Khetho ea thepa bakeng sa li-hose tsa rabara ea thermoplastic ha se feela ho ntlafatsa paramente e le 'ngoe, empa ke mokhoa o felletseng oa boenjiniere ba sistimi e kopanyang thepa ea thepa, maemo a ts'ebetso le litlhoko tsa ho latela. Ka ho bapisa lisebelisoa tsa saense le litlhoko, ho tšepahala le moruo oa tsamaiso ea liphaephe li ka ntlafatsoa haholo.
