Tsoelo-pele Mekhoeng ea ho Folisa ea Epoxidized Hydroxyl Terminated Polybutadiene
Lintlha tsa Bohlokoa
- Tsoelo-pele ea morao tjena ea ho lokisa e etsa hore HTPB e nang le epoxidized ho bonolo ho e sebetsana, ho ntlafatsa matla a eona a mechini le botsitso ba mocheso.
- Ho ntlafatsa diparamente tsa ho fodisa tse kang mocheso le mahloriso a catalyst ho ntlafatsa tshebetso ya thepa ditshebedisong tse hlokang boiteko bo bongata.
- Lisebelisoa tse ncha tsa ho phekola le li-catalyst li lebisa linakong tsa ho phekola ka potlako le maqhama a matla, e leng se etsang hore HTPB e nang le epoxidized e loketse lifofane le lisebelisoa tsa elektroniki.
EHTTPB (HTPB e nang le Epoxidized) Nomoro ea CAS 129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien: Mekhoa ea ho Folisa le Bohlokoa ba Eona
Likarolo tse Ikhethang tsa HTPB e nang le Epoxidized (EHTTPB)
Epoxidized HTPB CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien e hlahella ka lebaka la sebopeho sa eona se ikhethang sa lik'hemik'hale. Thepa ena e na le lihlopha tsa epoxy le lipheletso tsa hydroxyl. Likarolo tsena li e lumella ho arabela ka li-agent tse fapaneng tsa ho folisa. Lihlopha tsa epoxy li etsa hore polymer e be polar haholoanyane, e leng se ntlafatsang bokhoni ba eona ba ho hokahana le lisebelisoa tse ling. Lihlopha tsa hydroxyl li thusa ts'ebetso ea ho folisa le ho eketsa ho tenyetseha. Bo-rasaense ba sebelisa thepa ena masimong a tsoetseng pele hobane e ka sebetsana le libaka tse thata.
Mekhoa e meholo ea ho phekola e kenyelletsa:
- Ho eketsa amine ea mantlha
- Ho eketsa amine ea bobeli
- Etherification
Likarabelo tsena li fetola sebopeho sa Epoxidized HTPB CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien. Lihlopha tsa epoxy li arabela ka li-isocyanate, li etsa li-oxazolidinone. Ts'ebetso ena e eketsa matla a mechini le botsitso ba mocheso.
Karolo ea Phekolo Ntlafatsong ea Ts'ebetso
Ho folisa ho bapala karolo ea bohlokoa ho etseng hore thepa e be matla le e tsitsitseng haholoanyane. Ha ts'ebetso ea ho folisa e etsahala, liketane tsa polymer lia hokahana. Sena se etsa hore thepa e be thata 'me e se ke ea robeha habonolo. Likarabelo tsa ho folisa li boetse li fokotsa ho se khore, e leng se thusang thepa ho hanela mocheso le lik'hemik'hale.
Tafole e ka tlase e bontša kamoo ho phekola ho ntlafatsang ts'ebetso kateng:
| Tšobotsi ea Tshebetso | Tlhaloso |
|---|---|
| Matlotlo a Mekaniki | Lihlahisoa tsa ho phekola tsa EHTTPB/H12MDI li bontša thepa e betere ea mechini ho feta lihlahisoa tsa HTPB/H12MDI. |
| Ho khomarela | Ho eketsa polarity, e leng se ntlafatsang ho khomarela li-substrate tsa polar le ho eketsa matla a ho beola ho fihlela makhetlo a mararo. |
| Khanyetso ea Lik'hemik'hale | Liphetoho tsa sebopeho tse bakoang ke epoxidation li eketsa khanyetso ea lik'hemik'hale le mongobo. |
| Ho Tsitsisa ha Thermal | Ho se khore hantle ha mocheso ho lebisa ho tšoarelleng ha mocheso hantle, e leng se etsang hore thepa e lokele tšebeliso e tsoetseng pele. |
Keletso: Ho lokisa thepa ha ho matlafatse thepa feela empa hape ho e etsa hore e tšepahale haholoanyane bakeng sa lits'ebetso tse thata joalo ka lifofane le sesole.
Mekhoa ea Motheo ea Phekolo ea EHTTPB (HTPB e nang le Epoxidized)
Likarabelo tsa Lik'hemik'hale Ts'ebetsong ea Phekolo
Epoxidized HTPB CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien e feta liketsong tse 'maloa tsa bohlokoa tsa lik'hemik'hale nakong ea ho fola. Bo-rasaense ba hlokomela hore lihlopha tsa epoxy li arabela le li-isocyanate, e leng se lebisang ho thehoeng ha li-oxazolidinone. Sebopeho sena sa marang-rang se matlafatsa thepa le ho ntlafatsa thepa ea eona. Bafuputsi ba sebelisa differential scanning calorimetry (DSC) le mekhoa e meng ho latela liphetoho tsena. Mocheso oa phetoho ea khalase oa phahama, o bontšang hore thepa e ba e tsitsitseng haholoanyane.
| Mofuta oa Bopaki | Tlhaloso |
|---|---|
| Ho Folisa Karabelo ea Kinetics | Karabelo ea ho folisa e etsa sebopeho sa marang-rang, e leng se bontšang ho thehoa ha li-oxazolidinones. |
| Matlotlo a Mekaniki | Boteng ba oxazolidinone bo ntlafatsa li-elastomer tsa polyurethane, bo phahamisa mocheso oa phetoho ea khalase. |
| Mekhoa ea Teko | DSC le liteko tse ling li tiisa liphetoho litšobotsing tsa mechine le tsa mocheso. |
Ela Hloko: Ho thehoa ha oxazolidinones ke mohato oa bohlokoa o matlafatsang matla le botsitso.
Mabaka a Susumetsang Bokgoni ba ho Folisa
Mabaka a mangata a ama hore na ts'ebetso ea ho folisa e sebetsa hantle hakae. Thempereichara e bapala karolo e kholo. Lithempereichara tse phahameng li potlakisa karabelo 'me li fokotsa nako ea ho folisa. Sekhahla sa ho futhumatsa le sona sea bohlokoa. Ho futhumatsa ka potlako ho khutsufatsa nako ea karabelo 'me ho eketsa mocheso oa phetoho, e leng se fetolang tsela eo liketane tsa polymer li itlhophisang ka eona. Li-catalyst li thusa ts'ebetso ka ho etsa hore liketso li etsahale kapele le ka botlalo.
| Ntlha | Tšusumetso Bokhoni ba ho Folisa |
|---|---|
| Thempereichara | Lithempereichara tse phahameng li fokotsa nako ea ho fola ka ho potlakisa sekhahla sa karabelo. |
| Litefiso tsa ho Futhumatsa | Sekhahla se eketsehileng sa ho futhumatsa se khutsufatsa nako ea karabelo le ho phahamisa mocheso oa phetoho. |
| Li-catalyst | Li-catalyst li bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea ho folisa, joalo ka ha ho bontšitsoe ke lintlha tsa liteko. |
Keletso: Ho fetola mocheso, sekhahla sa ho futhumatsa, le mofuta oa catalyst ho ka thusa bo-rasaense ho fihlela liphetho tse ntle ka ho fetisisa tsa ho folisa.
Tsoelo-pele ea morao tjena Mekhoeng ea ho Phekola bakeng sa HTPB e nang le epoxidized
Li-Catalyst le Lisebelisoa tse Ncha tsa ho Folisa
Bafuputsi ba thehile metsoako e mecha ea ho folisa le li-catalyst tse ntlafatsang ts'ebetso ea Epoxidized HTPB CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien. Lintho tsena tse ncha li thusa thepa ho fola kapele le ho ba matla.
- Anhydride ea maleic e sebetsa e le moemeli oa ho hokahanya rabara ea tlhaho e nang le epoxidized. E hlahisa lihokelo tse sebetsang ntle le ho hloka li-catalyst tse eketsehileng. Mokhoa ona o nolofatsa ts'ebetso ea ho folisa.
- Asiti ea Terephthalic e sebetsa e le crosslinker 'me e ntlafatsa ho senyeha ha mobu oa tlhaho. E sebetsa hantle ho feta rabara e nang le sebabole, e leng se etsang hore thepa e be mosa haholo tikolohong.
- Asiti ea Dodecanedioic, e kopantsoeng le 1,2-dimethylimidazole, e potlakisa ts'ebetso ea ho folisa. Sehokelo sena se etsa litlamo tse matla tsa khabone-oksijene, tse ntlafatsang litšobotsi tsa mechini.
- Sesebediswa sa catalyst T-12 se fokotsa matla a ho kenya tshebetsong ha karabelo ya ho fodisa. Se potlakisa karabelo pakeng tsa dihlopha tsa isocyanate le hydroxy. Sena se fella ka ho fodisa kapele le bongata bo hodimo ba di-crosslink.
Bo-rasaense ba khetha metsoako ena le li-catalyst ho fihlela matla a betere a mechini, ho fola kapele le ts'ebetso e ntlafetseng ea tikoloho.
Ntlafatso ea Liparamente tsa Ts'ebetso
Ho ntlafatsa diparamente tsa tshebetso ho thusa bo-rasaense ho laola lebelo la ho fola le boleng ba HTPB e nang le epoxidized Nomoro ea CAS 129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien. Li fetola mocheso, sekhahla sa ho futhumatsa, le mahloriso a catalyst ho fumana liphetho tse ntle ka ho fetisisa.
- Mocheso o phahameng o fokotsa nako ea ho fola. Karabelo e etsahala kapele, 'me thepa e ba matla.
- Sekhahla sa ho futhumatsa se potlakileng se khutsufatsa nako ea karabelo. Hape li phahamisa mocheso oa phetoho ea khalase, e leng se ntlafatsang botsitso ba mocheso.
- Bongata ba catalyst bo ama sekhahla sa karabelo. Catalyst e ngata e bolela ho fola kapele, empa ho feta tekano ho ka fokotsa bongata ba li-crosslink. Bo-rasaense ba leka-lekanya maemo a catalyst ho fumana boima le matla a limolek'hule tse nepahetseng.
Taolo e hlokolosi ea liparamente tsena e netefatsa hore thepa e fola hantle 'me e fihlela maemo a ts'ebetso.
Mekhoa e Tsoetseng Pele ea Tlhahlobo le Tlhokomelo
Bo-rasaense ba sebelisa mekhoa e tsoetseng pele ho ithuta mokhoa oa ho folisa. Mekhoa ena e ba thusa ho utloisisa hore na thepa e fetoha joang nakong ea ho folisa le hore na ba ka e ntlafatsa joang.
| Mokhoa | Kopo | Meeli |
|---|---|---|
| 1H NMR Relaxometry | E sebelisetsoa ho hlalosa ka hare ho sebaka seo ho sona ho nang le polymerization le dikarabelo tsa ho fodisa. | Ho nepahala ho itseng ha hoa hlalosoa; ho itshetlehile ka diphuputso tsa T1 tse ka fapanang ho ya ka maemo. |
| NMR ea ho hasanya | E lekanya di-coefficient tsa ho iphatlalatsa ka hara di-polymer le thepa ya di-soft-matter. | Ho hloka hore echo damping e be kholo ho feta likamano tsa T2; e kanna ea se ke ea ikarabella bakeng sa motsamao o monyenyane. |
Bo-rasaense ba sebelisa 1H NMR relaxometry ho shebella ts'ebetso ea ho fola ha e ntse e etsahala. Mokhoa ona o ba thusa ho bona kamoo liketane tsa polymer li hokahanang kateng. NMR e hasaneng e lekanya kamoo limolek'hule li tsamaeang ka hare ho thepa. E fana ka tlhahisoleseling mabapi le sebopeho le boleng ba sehlahisoa se folisitsoeng.
Lisebelisoa tsena li thusa bafuputsi ho beha leihlo pholiso ka nako ea sebele le ho etsa liphetoho ho ntlafatsa thepa ea thepa.
Tšusumetso ea Tsoelo-pele ea Phekolo Thepeng ea Lintho
Lintlafatso Matla a Mechini le ho Tenyetseha ha Mechini
Bo-rasaense ba hlokometse hore mekhoa e mecha ea ho phekola e etsa hore HTPB e nang le epoxidized thepa e matla le e tenyetsehang haholoanyane. Liketane tsa polymer li theha marang-rang a thata, a thusang thepa ho hanela ho robeha le ho otlolla. Marang-rang ana a lumella thepa ho kobeha ntle le ho petsoha. Bafuputsi ba lekanya matla a ho tsitlalla le ho lelefala ha thepa e robeha ho bona hore na thepa e sebetsa joang. Liphetho li bontša hore polymer e phekotsoeng e ka sebetsana le meroalo e boima le motsamao o pheta-phetoang. Ntlafatso ena e thusa thepa ho tšoarella nako e telele maemong a thata.
Liindasteri tse ngata li sebelisa thepa ena e matla le e tenyetsehang haholoanyane. Mohlala, baenjiniere ba lifofane ba hloka li-polymer tse ka mamellang khatello e phahameng. Thepa e ntlafalitsoeng ea mechini e etsa hore HTPB e nang le epoxidized CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien ke khetho e ntle bakeng sa lits'ebetso tsena.
Ho Matlafatsa Botsitso ba Thermal le Lik'hemik'hale
Tsoelo-pele ea ho folisa e boetse e ntlafatsa bokhoni ba thepa ba ho hanela mocheso le lik'hemik'hale. Bo-rasaense ba leka thepa ka ho e pepesetsa mochesong o phahameng le lik'hemik'hale tse matla. Liphetho li bontša hore polymer e folisitsoeng e lula e tsitsitse 'me ha e robehe habonolo.
Liteko tsa ho hanyetsa lik'hemik'hale li bontšitse hore EHTPB-PU li bontšitse tahlehelo e kholo hanyane ea boima ho feta HTPB-PU tlas'a maemo a asiti le a motheo. Leha ho le joalo, ho senyeha ha sampole ea 10% ea EHTPB-PU ho ne ho le tlase ho feta sampole ea 5% ea EHTPB-PU, ho fana ka maikutlo a hore leha ho kenyelletsoa ha epoxide ea pele ho ka eketsa ho hlaseloa ke lik'hemik'hale, ho kenyelletsoa ho eketsehileng ho eketsa bongata ba ho hokahanya, ka hona ho ntlafatsa botsitso ba lik'hemik'hale.
Ho tsitsa ha mocheso oa thepa ho itšetlehile ka hore na HTPB e nang le epoxidized e sebelisoa hakae. Bo-rasaense ba fumane hore mocheso oa pele oa ho bola ha metsoako e tsoetseng pele ea HTPB e nang le epoxidized e ne e le 307 °C. Mocheso o nang le sekhahla se phahameng sa ho theola boima ba 'mele o hlahile mekhahlelong e meraro: hoo e ka bang 240 °C, 360–370 °C, le 440 °C. Liphetho tsena li bontša hore litaba tse phahameng tsa EHTPB li ka fokotsa botsitso ba mocheso, empa ho kenngoa ha ts'ebetso ea polar ka epoxidation ho ntlafatsa ho lumellana le li-additives tsa polar.
- Mocheso oa pele oa ho bola ha metsoako e tsoetseng pele ea HTPB e nang le epoxidized o fumanoe o le 307 °C.
- Ho eketsoa ha prepolymer ea polyurethane e thehiloeng ho EHTTPB ho ile ha fella ka phokotso ea botsitso ba mocheso ka lebaka la keketseho ea litaba tsa EHTTPB.
- Mocheso o ka tekanyong e phahameng ea ho theola boima ba 'mele (Tmax) o bonoe mekhahlelong e meraro: hoo e ka bang 240 °C, 360–370 °C, le 440 °C, e leng se bontšang phokotseho ea botsitso ba mocheso ka litaba tse phahameng tsa EHTTPB.
- T5% ea resin e fetotsoeng ea epoxy e ne e le tlase ho feta ea resin e ntle ea epoxy, e leng se bontšang hore botsitso ba mocheso bo fokotsehile.
- Khanyetso ea lik'hemik'hale e ile ea eketseha ka lebaka la ho hlahisoa ha ts'ebetso ea polar ka epoxidation, e leng se ileng sa ntlafatsa ho lumellana le lisebelisoa tsa polar.
Liphuputso tsena li thusa bo-rasaense ho khetha mokhoa o nepahetseng oa ho phekola bakeng sa ts'ebeliso e 'ngoe le e 'ngoe. Li leka-lekanya bongata ba HTPB e nang le epoxidized ho fumana motsoako o motle ka ho fetisisa oa botsitso ba mocheso le lik'hemik'hale.
Lintlha tse Bapisang le Lithuto tsa Nyeoe
Bafuputsi ba bapisa thepa ea HTPB e phekotsoeng ea Epoxidized le mefuta ea khale le thepa e 'ngoe. Ba sebelisa litafole le lichate ho bontša liphapang. Lintlha li bontša hore mekhoa e mecha ea ho phekola e fa thepa matla a mechini, ho tenyetseha le botsitso bo betere.
| Thepa | Tlhahiso ea HTTPB ea Khale | HTPB e Tsoetseng Pele ea Epoxidized |
|---|---|---|
| Matla a tšepe | Tlase | E phahameng |
| Ho Lelefatsa Nako ea Phomolo | E itekanetseng | E ntlafalitsoe |
| Mocheso oa Pele oa ho Qhala | 290 °C | 307 °C |
| Khanyetso ea Lik'hemik'hale | E lekanyelitsoe | E ntlafalitsoe |
Lithuto tsa linyeoe li totobatsa kamoo lintlafatso tsena li thusang kateng maemong a sebele. Sebakeng sa lifofane, baenjiniere ba sebelisa thepa ena bakeng sa litiiso le likhomaretsi. Thepa ena e nka nako e telele 'me e sebetsa hantle tlas'a khatello ea maikutlo. Lisebelisoang tsa elektroniki, botsitso bo ntlafetseng bo sireletsa likarolo tse bonolo mochesong le lik'hemik'haleng.
Keletso: Baenjiniere le bo-rasaense ba ka sebelisa liphetho tsena tsa papiso ho khetha thepa e ntle ka ho fetisisa bakeng sa merero ea bona.
Litšebeliso tse sebetsang tsa HTPB e nang le epoxidized CAS No.129288-65-9 Epoxidized Hydroxyl e Felisitsoeng Polybutadien
Litšebeliso tsa Lifofane le Li-Propellant
Baenjiniere ba lifofane ba sebelisa Epoxidized HTPB CAS No.129288-65-9 Epoxidized Hydroxyl Terminated Polybutadien ka har'a li-propellant tse tiileng tsa rokete. Thepa ena e etsa li-binder tse matla, tse tenyetsehang tse tšoarang likaroloana tsa mafura hammoho. Li-binder tsena li thusa lirokete ho mamella khatello e phahameng le mocheso nakong ea ho qala. Mekhoa e ntlafalitsoeng ea ho phekola e fa thepa matla le botsitso bo betere. Sena se bolela hore lirokete li ka sebetsa ka mokhoa o tšepahalang le o sireletsehileng haholoanyane. Mekhatlo e mengata ea sepakapaka le lik'hamphani tsa tšireletso li khetha thepa ena bakeng sa ho tšoarella le ts'ebetso ea eona.
Liaparo, Likhomaretsi le Litiiso
Bahlahisi ba itshetlehile ka polymer ena bakeng sa dikobo tse tswetseng pele, dikhomaretsi le di-sealant. Ho tlamahana ho matla ha thepa le khanyetso ya dikhemikhale di sireletsa bokahodimo tshenyong. Dikhamphani tse kang Evonik di atolositse dibaka tsa tsona tsa tlhahiso Jeremane le Asia ho fihlela tlhoko e ntseng e hola ya dihlahiswa tsena. Matsete a bona a bontsha boitlamo ba phepelo e tshepahalang le tshebetso e betere. Tafole e ka tlase e totobatsa mekgwa ya moraorao ya indasteri:
| Mofuta oa Bopaki | Tlhaloso |
|---|---|
| Katoloso ea Khamphani | Evonik e ntse e atolosa ditsha tsa yona tsa tlhahiso ya HTPB Jeremane le Asia ho fihlela tlhoko e ntseng e eketseha ya lefatshe bakeng sa di-polymer tse tswetseng pele. |
| Karabelo ea Leano | Matsete a bonts'a boitlamo ba phepelo e tšepahalang le ts'ebetso e ntlafetseng ea lipente, likhomaretsi le li-sealant. |
| Merero ea Nakong e Tlang | Kaho e ntse e tswela pele bakeng sa ho eketsa tlhahiso ya HTPB, e leng se bontshang ho ikamahanya le ditlhoko tsa mmaraka ho tswelang pele. |
Liketso tsena li bontša hore na thepa ena e bile ea bohlokoa hakae ho sireletseng le ho hokela libaka tse ling liindastering tse ngata.
Ho Kena ka Sekhomaretsi sa Elektroniki le Litšebeliso Tse Ling Tse Hlahang
Baetsi ba lisebelisoa tsa elektroniki ba sebelisa polymer ena ho sireletsa likarolo tse bonolo mongobo le mocheso. Thepa e phekotsoeng e etsa mokoallo o thata ho potoloha lipotoloho le li-chip. Sena se thusa lisebelisoa ho tšoarella nako e telele le ho sebetsa hamolemo. Bafuputsi ba boetse ba hlahloba tšebeliso e ncha lisebelisoa tsa bongaka le polokelo ea matla. Ho tenyetseha le matla a thepa li bulela menyako bakeng sa lits'ebetso tse ngata tsa nakong e tlang.
Diphuputso tsa morao tjena di bontsha hore di-accelerator tsa pheko tse kang 593 di ntlafatsa bokgoni ba pheko le thepa ya mechini. Tafole e ka tlase e totobatsa diphihlello tsa bohlokwa:
| Sephetho sa Senotlolo | Tlhaloso |
|---|---|
| Mokhoa oa ho Phekola | Mocheso o phahameng o phethela likarabelo tsa carboxyl-epoxy empa o ka baka khatello ea mocheso. |
| Sesebelisi sa Pheko | 593 e ntlafatsa dikarabelo tsa ho bula lesale le matla a mechini. |
| Thepa ea Thepa | Mekhoa e ntlafalitsoeng e ntlafatsa ts'ebetso ea binder. |
HTPB e nang le epoxidized hona joale e fana ka botsitso bo betere ba mocheso le matla a mechini bakeng sa li-propellant le likhomaretsi. Bo-rasaense ba ntse ba tsoela pele ho hlahloba litsamaiso tse ncha tsa ho folisa le masimo a ts'ebeliso. Ba boetse ba sebetsana le liphephetso tse kang ho folisa ho sa lekanang le litlamorao tsa tikoloho ka ho nts'etsapele li-photoinitiators tse tsoetseng pele le litsamaiso tsa hybrid.
- Sistimi ea EHTTPB-IPDI e bontša karabelo e phahameng nakong ea phekolo.
- Ho ntsha oksijene e kgethilweng ho ntlafatsa ho kgomarela le ho hanyetsa dikhemikhale.
- Li-photoinitiator tse ncha le litsamaiso tse tsoakiloeng li thusa ho rarolla mathata a ho folisa.
Lipatlisiso tsa nakong e tlang li tla shebana le ho ntlafatsa litsamaiso tsa ho phekola le ho atolosa ts'ebeliso liindastering tse tsoetseng pele.
LBH
Se etsang HTPB e nang le epoxidized e fapaneng le e tloaelehileng HTTPB?
HTPB e nang le epoxidized e na le lihlopha tsa epoxy. Lihlopha tsena li eketsa polarity le ho ntlafatsa ho kopana. Thepa e bontša matla a mechini a betere le khanyetso ea lik'hemik'hale.
Bo-rasaense ba beha tšebetso ea ho folisa leihlo joang?
Bafuputsi ba sebelisa lisebelisoa tse tsoetseng pele joalo ka 1H NMR relaxometry. Mokhoa ona o latela liphetoho tsa ketane ea polymer nakong ea ho fola. O thusa ho ntlafatsa boleng ba thepa.
Liindasteri li sebelisa hokae HTPB e nang le epoxidized?
Liindasteri tsa lifofane, tsa elektroniki le tsa ho roala li sebelisa HTPB e nang le epoxidized. Thepa ena e sireletsa libaka, e tlama li-propellant, 'me e sireletsa likarolo tsa elektroniki mochesong le mongobong.