Tšebeliso ea HTPB ho Potting/encapsulation ea Lisebelisoa tsa Elektroniki
HTPB (Hydroxyl-Terminated Polybutadiene), e le elastomer e sebetsang hantle, e fana ka melemo e ikhethang lits'ebetsong tsa ho etsa lipitsa bakeng sa thepa ea elektroniki, haholo-holo maemong a hlokang ho tenyetseha, ho hanyetsa boemo ba leholimo le ho thibela motlakase. Ka tlase ke kakaretso ea lintlha tsa bohlokoa mabapi le tšebeliso ea HTTPB bakeng sa ho etsa lipitsa tsa elektroniki:
**1. Litšobotsi le Melemo ea HTPB bakeng sa ho Tlotsa Lipitsa**
1. - Ho tenyetseha le ho hanyetsa tšusumetso: Ha e fola, HTTPB e bopa elastomer e monyang kgatello ya mechine, e sireletsang dikarolo tsa elektroniki tse utlwahalang (mohlala, disensara, diboto tsa potoloho) ho tloha ho thothomelong kapa katolosong ya mocheso.
2. -Ho Thibela Motlakase: Ho hanyetsa ka bongata bo phahameng (>10¹⁴ Ω·cm), ho etsa hore e lokele ho thibela motlakase ka motlakase o phahameng kapa phetiso ya letshwao la maqhubu a phahameng.
3.- Khanyetso ea Lik'hemik'hale le Boemo ba Leholimo: E hanela li-acid, li-alkali le mahlaseli a UV, e loketse lisebelisoa tsa elektroniki tsa kantle (mohlala, mabokose a PV junction, lisebelisoa tsa elektroniki tsa likoloi).
4.- Ho Fokotsa ho Fokotsang: Ho fokotsa khatello ea ka hare ka mor'a ho petsoha ha lipitsa, ho thibela ho fetoha ha likarolo kapa ho petsoha.
5.- Ho Hanela Mongobo le Lerōle: E fana ka tšireletso e sebetsang khahlanong le litšila tsa tikoloho.
**2. Moralo oa Tlhahiso ea Lintho tse Entsoeng ka Lipitsa**
- Khetho ea Sistimi ea ho Folisa:
- Li-Isocyanate (mohlala, TDI, IPDI): Li theha marangrang a polyurethane; Karolelano ea NCO/OH (hangata e ba 1.05–1.1:1) e tlameha ho laoloa ho leka-lekanya thatafalo le ho tenyetseha.
- Ho Fokotsa Peroxide: E loketse ho sebelisoa mochesong o phahameng empa e ka fokotsa ho tenyetseha.
- Lisebelisoa tsa ho tlatsa:
- Li-Filler tse Tsamaisang Mocheso: Boron nitride (e sireletsang mocheso le e tsamaisang mocheso), alumina (e theko e tlase).
- Dithibela-mollo: Aluminium hydroxide, dithibela-mollo tse thehilweng ho phosphorus ho fihlela maemo a UL94 V-0.
- Li-plasticizer: mohlala, DOA (Dioctyl Adipate) ho fokotsa modulus haholoanyane, leha likotsi tsa ho falla li tlameha ho hlahlojoa.
**3. Litšebeliso tse Tloaelehileng**
- Lisebelisoa tsa Elektroniki tsa Sesole/Sefofane: Ho kenya lipitsa bakeng sa lipotoloho tsa limisaele, likarolo tsa radar, ho sebelisa HTTPBmocheso o pharaletseng (-50°C ho isa ho 80°C).
- Lekala le Lecha la Matla: Ho kenya li-capsule tsa betri ea lithium, tšireletso ea module ea ho tjhaja, ho leka-lekanya ho kenya mocheso le ho monya ha shock.
- Lisebelisoa tse ka Tlas'a Metsi: Ho kenya lipitsa tsa thapo ea metsing a ka tlas'a metsi, ho hanela mafome a metsi a letsoai le ho se kenelle metsi.
- Liboto tsa potoloho tse hatisitsoeng (li-PCB)
- Meralo ea Motheo ea Mehala le Marang-rang
- Matla a Nchafatsoang le Matla a Elektroniki
- Lisebelisoa tsa Elektroniki tsa Marine
- Lisebelisoa tsa Elektroniki tsa Bareki tse Tšoarellang Haholo
**4. Mehopolo ea Ts'ebetso**
- Ho Tlosa Lipululana: Ho tlosa khase ka vacuum (-0.095 MPa, metsotso e 10–20) ho thibela lipokotho tsa moea kamora ho fola.
- Maemo a ho Phekola: Ho phekola mochesong wa kamore (dihora tse 24–48); ho futhumatsa (60–80°C) ho fokotsa nako ya ho phekola ho dihora tse 4–8.
- Ho Kgomarela Pele ho Phekolo: Phekolo ea plasma kapa li-primer tse hlokahalang bakeng sa li-substrate tse seng tsa polar (mohlala, PE) ho ntlafatsa ho kopana.
**5. Papiso le Lisebelisoa tse ling tsa ho Etsa Lipitsa**
| Thepa | Resin ea Epoxy | Rabara ea Silicone | |
| Ho tenyetseha | E ntle haholo (>200% bolelele) | E futsanehileng (e bobebe) | E ntle haholo (>300%) |
| Khanyetso ea Mocheso o Phahameng | E itekanetseng (100°C) | E ntle haholo (150–200°C) | E ntle haholo (200–250°C) |
| Litšenyehelo | E itekanetseng | Tlase | Holimo |
| Bothata ba Ts'ebetso | E itekanetseng (taolo ea mongobo) | Tlase | E itekanetseng (sesebediswa sa platinamo) |
**6. Maano a Ntlafatso**
- Phetoho ea Nano: Ho kenyelletsa nano-SiO₂ ho ntlafatsa matla a mechini (mohlala, matla a ho thaepa a eketseha ho tloha ho 5 MPa ho isa ho 8 MPa).
- Mekhoa ea ho Kopanya: Ho kopanya polymer le epoxy (mohlala, EP/HTTPB marangrang a kenellang) ho leka-lekanya ho tiea le ho tiea.
HTTPB Lisebelisoa tsa ho etsa lipitsa li loketse haholo tšireletso ea elektroniki libakeng tse fetohang, 'me mekhoa e lokela ho ntlafatsoa ho latela litlhoko tse itseng tsa ts'ebetso.
Khamphani ea rona e fana ka HTTPB ka mekhahlelo e fapaneng mme e fana ka tlhahiso e ikhethileng ho latela litlhaloso tsa bareki tse hlokahalang.
