Daim ntawv thov ntawm HTPB hauv Potting / encapsulation ntawm Cov Khoom Siv Hluav Taws Xob
HTPB (Hydroxyl-Terminated Polybutadiene), ua ib qho elastomer ua tau zoo, muaj cov txiaj ntsig tshwj xeeb hauv kev siv potting rau cov khoom siv hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas xav tau kev ywj pheej, kev tiv thaiv huab cua, thiab kev rwb thaiv hluav taws xob. Hauv qab no yog cov ntsiab lus tseem ceeb txog kev siv HTPB rau kev siv hluav taws xob potting:
**1. Cov yam ntxwv thiab qhov zoo ntawm HTPB rau kev cog qoob loo**
1. - Kev Yoog Tau thiab Kev Tiv Thaiv Kev Cuam Tshuam: Thaum kho, HTPB tsim ib qho elastomer uas nqus tau kev ntxhov siab ntawm lub cev, tiv thaiv cov khoom siv hluav taws xob rhiab heev (piv txwv li, cov sensors, cov laug cam) ntawm kev co lossis kev nthuav dav thermal.
2. -Kev rwb thaiv hluav taws xob: Muaj qhov tiv taus siab (>10¹⁴ Ω·cm), ua rau nws tsim nyog rau kev rwb thaiv hluav taws xob siab lossis kev xa xov tooj cua zaus siab.
3.- Kev Tiv Thaiv Tshuaj thiab Huab Cua: Tiv taus cov kua qaub, alkalis, thiab UV hluav taws xob, zoo tagnrho rau cov khoom siv hluav taws xob sab nraum zoov (piv txwv li, PV junction boxes, automotive electronics).
4.- Kev Kho Kom Tsawg: Txo qhov kev ntxhov siab sab hauv tom qab muab tso rau hauv lauj kaub, tiv thaiv kom tsis txhob muaj kev hloov pauv lossis tawg.
5.- Tiv taus dej noo thiab plua plav: Muab kev tiv thaiv zoo tiv thaiv cov kuab paug ib puag ncig.
**2. Tsim Cov Khoom Siv Rau Hauv Lub Taub**
- Kev Xaiv Lub Tshuab Kho:
- Isocyanates (piv txwv li, TDI, IPDI): Tsim cov polyurethane networks; NCO/OH piv (feem ntau yog 1.05–1.1:1) yuav tsum tau tswj kom sib npaug qhov nyuaj thiab elasticity.
- Kev Kho Peroxide: Haum rau cov ntawv thov kub siab tab sis yuav txo qhov yooj ywm.
- Cov Khoom Siv Ntxiv:
- Cov Khoom Siv Thermal Conductive: Boron nitride (insulating thiab thermally conductive), alumina (pheej yig).
- Cov Tshuaj Tiv Thaiv Hluav Taws: Aluminium hydroxide, phosphorus-based flame retardants kom ua tau raws li UL94 V-0 tus qauv.
- Cov tshuaj yas: piv txwv li, DOA (Dioctyl Adipate) kom txo cov modulus ntxiv, txawm hais tias yuav tsum tau soj ntsuam qhov kev pheej hmoo ntawm kev tsiv teb tsaws chaw.
**3. Cov Kev Siv Ib Txwm Muaj**
- Cov Khoom Siv Hluav Taws Xob Rau Tub Rog/Aerospace: Kev sib xyaw ua ke rau cov hluav taws xob foob pob hluav taws, cov khoom siv radar, kev siv zog HTPBQhov kub thiab txias ntau yam (-50 ° C txog 80 ° C).
- Kev Lag Luam Zog Tshiab: Kev ntim roj teeb Lithium, kev tiv thaiv module them, kev rwb thaiv tsev sib npaug thiab kev nqus dej poob siab.
- Cov Khoom Siv Hauv Qab Dej: Cov hlua khi hauv qab dej sib txuas, tiv taus kev xeb dej ntsev thiab dej tsis nkag.
- Cov laug cam luam tawm (PCBs)
- Kev Sib Txuas Lus thiab Kev Tsim Kho Network
- Lub Zog Rov Ua Dua Tshiab thiab Lub Hwj Chim Hluav Taws Xob
- Cov Khoom Siv Hluav Taws Xob Hauv Dej
- Cov Khoom Siv Hluav Taws Xob Uas Siv Tau Ntev
**4. Kev Xav Txog Cov Txheej Txheem**
- Tshem Tawm Cov Npuas: Siv lub tshuab nqus tsev los tshem cov pa roj (-0.095 MPa, 10–20 feeb) kom tiv thaiv cov pa tawm tom qab kho tau zoo lawm.
- Cov Kev Cai Kho: Kho kom sov hauv chav tsev (24–48 teev); cua sov (60–80°C) txo lub sijhawm kho kom sov mus rau 4–8 teev.
- Kev Kho Ua Ntej Adhesion: Kev kho mob plasma lossis cov primers xav tau rau cov substrates tsis-polar (piv txwv li, PE) los txhim kho kev sib txuas.
**5. Sib piv nrog lwm cov khoom siv cog paj**
| Vaj tse | Cov roj epoxy | Cov roj hmab silicone | |
| Kev ywj pheej | Zoo heev (> 200% elongation) | Phem (phem) | Zoo heev (> 300%) |
| Kev Tiv Thaiv Kub Siab | Nruab Nrab (100°C) | Zoo heev (150–200°C) | Zoo heev (200–250°C) |
| Tus nqi | Nruab nrab | Qis | Siab |
| Kev Nyuaj Siab ntawm Cov Txheej Txheem | Nruab nrab (tswj av noo) | Qis | Nruab nrab (platinum catalyst) |
**6. Cov Tswv Yim Txhim Kho**
- Nano-Modification: Kev koom ua ke nano-SiO₂ los txhim kho lub zog kho tshuab (piv txwv li, lub zog tensile nce ntxiv ntawm 5 MPa mus rau 8 MPa).
- Cov Txheej Txheem Sib Xyaws: Co-polymerization nrog epoxy (piv txwv li, EP/HTPB interpenetrating tes hauj lwm) kom sib npaug rigidity thiab toughness.
HTPB Cov ntaub ntawv cog qoob loo yog qhov tshwj xeeb tshaj yog rau kev tiv thaiv hluav taws xob hauv cov chaw ib puag ncig dynamic, thiab cov qauv yuav tsum tau ua kom zoo raws li cov kev xav tau tshwj xeeb.
Peb lub tuam txhab muaj HTPB nyob rau hauv ntau qib thiab muab kev tsim khoom raws li cov lus qhia ntawm tus neeg siv khoom xav tau.
