Tšebeliso ea HTPB ho Li-Sealant le Metsoako ea Lipitsa
Lintlha tsa Bohlokoa
- Li-sealant tse thehiloeng ho HTPB fana ka tšireletso e matla khahlanong le mongobo le lik'hemik'hale, e leng se bolokang lehae la hau le sireletsehile ho lutla le ho senyeha.
- Ho tenyetseha ha HTPB ho etsa bonnete ba hore li-sealant li lula li sebetsa maemong a feteletseng a mocheso, e leng se thibelang mapetso le ho robeha ha bonolo.
- Ho sebelisa HTPB mererong ea lapeng e ntlafatsa ho khomarela ho thepa e fapaneng, ho netefatsa hore litiiso tse tšoarellang nako e telele tse mamellang maemo a thata.
Tšebeliso ea HTPB ho Li-Sealant le Metsoako ea Lipitsa
HTTPB ke eng le thepa ea eona e ikhethang
U ka 'na ua ipotsa hore na ke eng e etsang hore HTPB e hlahelle lefatšeng la tšireletso ea lehae. HTPB, kapa polybutadiene e fedisitsweng ke Hydroxyl, ke rabara e khethehileng ea mokelikeli. Sebopeho sa eona sa lik'hemik'hale se na le lihlopha tsa hydroxyl lipheletsong tsa liketane tsa eona. Lihlopha tsena li thusa HTPB ho theha marang-rang a matla a mahlakore a mararo ha u a kopanya le li-agent tse ling. Marang-rang ana a fa HTPB matla le ho tenyetseha ha eona.
HTPB e lula e tenyetseha esita le maemong a batang hobane e na le mocheso o tlase oa phetoho ea khalase oa -75°C. Ha ho hlokahale hore u tšoenyehe ka hore li-sealant tsa hau li tla robeha habonolo mariha. HTPB e boetse e hanela lik'hemik'hale tse ngata, oli, li-acid le metheo. U fumana thepa e tšoarellang le e sireletsang lehae la hau maemong a thata.
Keletso: Sebopeho sa mokelikeli sa HTPB se etsa hore ho be bonolo ho se sebelisa bakeng sa ho lahla le ho pitsa, esita le libakeng tse thata.
Hobaneng HTPB e le Bohlokoa bakeng sa Li-sealant le Metsoako ea Lipitsa
Ha o sheba Tšebeliso ea HTPB ho Li-Sealant le Li-Potting Compounds, o bona melemo e mengata bakeng sa lehae la hau. Li-sealant tsa HTPB le metsoako ea lipitsa sireletsa khahlanong le moea, mongobo le lik'hemik'hale. Li boloka lehae la hau le sireletsehile ho lutla le ho senyeha. Hape u fumana ho khomarela ka matla thepa e mengata ea kaho, ho bolelang hore li-sealant tsa hau li lula sebakeng sa tsona.
Mona ke pono e khutšoanyane ea hore na u ka sebelisa HTPB joang lapeng la hau:
| Mofuta oa Kopo | Tlhaloso |
|---|---|
| Likhomaretsi le Litiiso | Sireletsa likarolo tse bonolo mongobo le khatello ea mechine |
| Metswako ea ho Etsa Lipitsa | Ntlafatsa ho khomarela, ho hanyetsa metsi, le ho hanyetsa lik'hemik'hale bakeng sa ho roala |
| Liaparo tsa Bokaholimo | Bohlokoa bakeng sa ho roala ka tšireletso le ho kenya li-encapsulations tsa elektroniki |
O ka tšepa HTPB ho fana ka ho tenyetseha, ho tšoarella, le ts'ebetso e tšoarellang nako e telele. Tšebeliso ea HTPB ho Li-Sealant le Li-Potting Compounds e u thusa ho boloka lehae la hau le le matla ebile le sirelelitsoe selemo le selemo.
Kamoo HTPB e Ntlafatsang ho Tšoarella ha Sealant le Tšireletso ea Lehae
Ho Tenyetseha ho Phahameng le ho Hanela Mapetso
U batla hore li-sealant tsa hau li lule li tenyetseha ebile li le matla, esita le ha mocheso o theoha. HTPB e u fa monyetla ona. Mocheso o tlase oa phetoho ea khalase oa HTPB, hoo e ka bang -70 °C, o boloka li-sealant li le bonolo ebile li tenyetseha maemong a leholimo a batang. Ha u bone li robeha kapa li petsoha. U ka boela ua itšetleha ka boima ba limolek'hule ba HTPB. Bahlahisi ba bo fetola pakeng tsa 1000 le 5000 ho latela litlhoko tsa hau. Lihlopha tsa terminal hydroxyl ho HTPB li arabela kapele ka li-isocyanate. Karabelo ena e etsa marang-rang a thata a polyurethane a kobehang le ho otlolla ntle le ho robeha.
- HTPB e lula e tenyetseha maemong a leholimo a batang.
- U fumana li-sealant tse hanang ho petsoha.
- Bahlahisi ba etsa HTPB bakeng sa lits'ebetso tse fapaneng.
Liteko tsa laboratori li bontša kamoo li-sealant tse thehiloeng ho HTPB li hanelang mapetso kateng. U ka bona liphetho tafoleng e ka tlase:
| Sehlopha sa Dipontsho | Sekhutlo sa Mapetso (°) | emax | εmin | εa (boholo ba khatello) |
|---|---|---|---|---|
| Taolo (S) | Ha e eo | 0.618 | 0 | 0.309 |
| C1 | 0 | 0.322 | 0 | 0.161 |
| C2 | 45 | 0.335 | 0 | 0.1675 |
| C3 | 75 | 0.410 | 0 | 0.205 |
Hape o ka sheba chate e ka tlase, e bonts'ang boholo ba khatello bakeng sa likhutlo tse fapaneng tsa mapetso ho li-sealant tse thehiloeng ho HTPB:
Ho khomarela ka tsela e ikhethang thepa ea kaho
O hloka di-sealant tse kgomarelang hantle hodima bokahodimo. HTPB e o fa kgomarelo e ntle haholo ho thepa e mengata ya kaho. O ka e sebedisa hodima konkreite, patsi, tshepe le khalase. Tšebeliso ea HTPB Ho Li-Sealant le Li-Potting Compounds ho u lumella ho koala likheo le manonyeletso ka kholiseho. Ha u tšoenyehe ka hore sealant e tla petsoha kapa e lahleheloe ke ho tšoara. Lihlopha tsa hydroxyl tse arabelang tsa HTPB li thusa ho kopana ka thata le libaka. U fumana tiiso e matla e tšoarellang.
- Likamano tsa HTPB le konkreite, lehong, tšepe le khalase.
- U bona ho lutla le ho se be le likheo tse ngata.
- Lehae la hao le lula le sirelelitsoe.
Khanyetso e Ntlafalitsoeng ea Boemo ba Leholimo le Lik'hemik'hale
U batla hore li-sealant tsa hau li mamelle boemo ba leholimo bo bobe le lik'hemik'hale. Li-sealant tse thehiloeng ho HTPB li bontša ho hanyetsa serame le thepa e matla ea mechini. U li bona li sebetsa hantle ho feta li-sealant tse tloaelehileng maemong a leholimo a feteletseng. Pula, lehloa le mocheso ha li li fokolise. Hape u fumana tšireletso ho li-acid le li-base. Liteko tsa ho hanyetsa lik'hemik'hale li bontša hore metsoako ea lipitsa e thehiloeng ho HTPB e lahleheloa ke boima bo fokolang libakeng tse nang le asiti le tsa motheo ha li bapisoa le lisebelisoa tse ling.
| Tikoloho ea Lik'hemik'hale | Papiso ea Tahlehelo ea Boima |
|---|---|
| E nang le asiti (10% H2SO4) | EHTTPB-PU > HTPB-PU |
| Motheo (30% NaOH) | EHTTPB-PU > HTPB-PU |
| Solvent ea Polar (EtOH) | Ha ea hlalosoa |
| Solvent e seng ea polar (toluene) | Ha ea hlalosoa |
Hlokomela: Li-sealant tse thehiloeng ho HTPB li boloka matla le sebopeho sa tsona esita le ha li pepesehetse lik'hemik'hale tse matla le boemo ba leholimo.
Tshebetso ea Nako e Telele le Khanyetso ea Botsofali
U batla hore lehae la hao le lule le tiile ka lilemo tse ngata. HTPB e thusa li-sealant 'me metsoako ea ho kenya lipitsa e nka nako e telele. U bona ho senyeha le ho taboha ho fokolang. HTPB e hanela hydrolysis, li-acid le li-alkali. Ha u bone li-sealant li senyeha kapa li lahleheloa ke ho tenyetseha ha tsona. Tšebeliso ea HTPB ho Li-Sealant le Metsoako ea ho kenya lipitsa e u fa khanyetso ea botsofali. U fumana tšireletso e tšepahalang bakeng sa lehae la hau ha nako e ntse e ea.
- HTPB e hanela botsofali le tšenyo ea tikoloho.
- U thabela ts'ebetso e tšoarellang nako e telele.
- Lehae la hao le lula le sireletsehile.
Mehlala ea Lefatše la Sebele ho Kaho le Tlhokomelo ea Lehae
O ka fumana disealant tse thehilweng ho HTPB le metswako ya dipitsa malapeng a mangata. Bahahi ba di sebedisa bakeng sa ho kwala difensetere, mamati le manonyeletso a katoloso. O di bona metswakong ya dipitsa tsa motlakase e sireletsang terata mongobong. Beng ba matlo ba kgetha dihlahiswa tse thehilweng ho HTPB bakeng sa ditokiso tsa ntloana le kichine. O fumana disealant tse matla, tse tenyetsehang tse thibelang metsi le moya ho kena. Tshebediso ya HTPB ho Disealant le Metswako ya Dipitsa e o thusa ho boloka lehae la hao ka boitshepo.
- Bahahi ba sebelisa HTPB bakeng sa litiiso tsa lifensetere le mamati.
- Litsebi tsa motlakase li itšetleha ka metsoako ea lipitsa tsa HTPB bakeng sa ho kenya lithapo tse sireletsehileng.
- Beng ba matlo ba tšepa HTPB bakeng sa litokiso le tlhokomelo.
Keletso: O ka kopa di-sealant tse thehilweng ho HTPB ha o batla diphetho tse tshwarellang mererong ya hao ya lapeng.
U bona HTPB e etsa hore metsoako ea li-sealant le lipitsa e be matla le ho tšepahala haholoanyane.
- HTPB e u fa ho hanyetsa mongobo, botsitso ba mocheso, le tšireletso ea lik'hemik'hale.
- U sireletsa lehae la hao khahlanong le boemo ba leholimo bo bobe le lik'hemik'hale.
| Melemo | Tlhaloso |
|---|---|
| Ho tšoarella | E nka nako e telele 'me e boloka lehae la hau le sireletsehile |
| Tshebetso e Botle ea Matla | E boloka litiiso tse matla 'me e boloka matla |
Khetha lihlahisoa tse thehiloeng ho HTPB bakeng sa liphetho tse tšoarellang.
LBH
HTPB e sebelisetsoa eng malapeng?
U sebelisa HTPB ka har'a li-sealant le metsoako ea lipitsa. E thusa ho koala lifensetere, mamati le likarolo tsa motlakase. U boloka lehae la hao le sireletsehile ebile le le matla.
Na HTPB e bolokehile bakeng sa tšebeliso ea lapeng?
U ka khona tšepa lihlahisoa tse thehiloeng ho HTTPBLi fihlela maemo a polokeho bakeng sa thepa ea kaho. Kamehla latela litaelo tse leiboleng.
U boloka li-sealant tse thehiloeng ho HTPB joang?
Boloka li-sealant tse thehiloeng ho HTPB sebakeng se pholileng, se omileng. Boloka setshelo se koetsoe hantle. Sheba leibole bakeng sa malebela a matle ka ho fetisisa a polokelo.