Cov ntawv thov ntawm HTPB hauv Aerospace

2025-08-12

HTPB (Hydroxyl-Terminated Polybutadiene) yog cov roj hmab ua los ntawm cov khoom siv hluav taws xob thiab cov khoom sib txuas uas siv dav hauv kev tsav dav hlau vim nws cov khoom siv kho tshuab zoo heev, tiv taus qhov kub tsawg, ruaj khov tshuaj lom neeg, thiab muaj peev xwm nplaum. Hauv qab no yog cov ntawv thov tseem ceeb thiab cov yam ntxwv ntawm HTPB hauv kev tsav dav hlau.

**1. Cov Khoom Siv Ua Ib Ke Rau Cov Khoom Siv Ua Rog Rocket**

HTPB yog cov khoom siv binder matrix feem ntau siv rau hauv cov khoom siv foob pob hluav taws khov kho, ua haujlwm hauv qab no:

- Cov khoom sib txuas ua keNws sib txuas cov oxidizers sib npaug (piv txwv li, Ammonium perchlorate, AP), roj hlau (piv txwv li, Hmoov txhuas),HTPB/AP/Al daim ntawv, thiab lwm yam khoom ntxiv los tsim cov khoom sib xyaw ua ke ruaj khov.

- Muab cov khoom siv kho tshuab: HTPBCov roj propellants uas ua raws li cov qauv qhia tau tias muaj kev ywj pheej siab, tiv taus kev tawg, thiab kev ua haujlwm zoo heev hauv qhov kub thiab txias qis (haum rau qhov chaw siab heev).

- Kev hloov kho kev ua haujlwm ntawm kev hlawv: Tus nqi combustion thiab lub zog tso zis tuaj yeem tswj tau los ntawm kev tsim cov qauv (piv txwv li, ntxiv cov plasticizers lossis cov neeg sawv cev sib txuas).

- Cov ntawv thov sawv cevCov khoom siv txhawb nqa Space Shuttle (SRB), Rockets, Cov roj propellant rau lub tsheb tua satellite

**2. Cov Khoom Siv Rwb Thaiv Kub thiab Cov Khoom Siv Sab Hauv**

HTPB siv rau hauv cov cav foob pob hluav taws ua cov txheej rwb thaiv tsev lossis cov ntaub thaiv kom tiv thaiv cov hlau / cov khoom sib xyaw los ntawm kev kub siab ntawm cov pa roj tawm:

- Kev tiv taus kub siab:Nrog cov khoom siv tiv taus cua sov (piv txwv li, silica, carbon fibers), HTPB-raws li rwb thaiv tsev tuaj yeem tiv taus qhov kub ntawm cov roj ntau tshaj 3000 ° C.

- Kev nplaum: Tsim cov kev sib txuas zoo nrog cov ntaub ntawv casing (piv txwv li, hlau, composites), tiv thaiv kev tawg.

**3. Cov Roj Matrix rau Cov Khoom Sib Xyaws**

HTPB ua haujlwm ua ib lub polymer matrix hauv cov khoom siv aerospace:

- Cov qauv sib duaUa ke nrog cov carbon lossis iav fibers, nws yog siv rau hauv rocket fairings, satellite Cheebtsam, thiab lwm yam.

- Kev cuam tshuam tsis kam: Haum rau kev tiv taus kev co thiab cov khoom siv kho tshuab.

**4. Cov Tshuaj Txhuam Thiab Cov Tshuaj Pleev Xim**

- Cov ntawv thov sealing: HTPBCov sealants uas ua raws li cov tshuaj sealant yog siv rau hauv cov roj foob pob hluav taws thiab cov pob qij txha kom tiv thaiv kev xau.

- Cov txheej tiv thaivNws cov tshuaj lom neeg thiab kev tiv thaiv hluav taws xob ua rau nws tsim nyog rau kev tiv thaiv sab nraud ntawm lub satellite.

**5. Cov txiaj ntsig ntawm HTPB**

- Cov zis hluav taws xob siab: Cov ntsiab lus CH siab ua rau muaj cua sov kub heev.

- Kev hloov pauv kub dav dav: Tswj kev ua haujlwm ruaj khov ntawm -40 ° C txog 60 ° C.

- Kev ua tiav laus: Yooj yim rau nrum thiab pwm, tsim rau kev tsim khoom loj.

**6. Xaus Lus**

Ua tsaug rau nws cov khoom sib npaug, HTPB yog ib yam khoom siv tseem ceeb rau cov khoom siv foob pob hluav taws thiab cov ntawv thov aerospace, txhawb nqa cov tsheb thauj khoom niaj hnub, cov foob pob hluav taws, thiab cov thev naus laus zis satellite. Kev nce qib yav tom ntej hauv cov foob pob hluav taws siv tau dua thiab kev tshawb nrhiav qhov chaw tob yuav tsav kev txhim kho ntxiv ntawm HTPB cov qauv (piv txwv li, lub zog ceev dua lossis kev phooj ywg ib puag ncig).

Peb lub tuam txhab muaj HTPB nyob rau hauv ntau qib thiab muab kev tsim khoom raws li cov neeg siv khoom xav tau. Lub caij no peb muaj daim ntawv tso cai los muab daim ntawv tso cai xa tawm rau HTPB.

Khoom	Qib I	Qib II	Qib III	Qib IV	Qib V	Qib VI
Qhov tsos	achromatous los yog lub teeb daj, tsis pom impurities
Tus nqi hydroxyl, ( mmol / g )	0.47-0.53	0.54-0.64	0.65-0.70	0.71-0.80	0.81-1.00	1.00-1.40
Viscosity (40 ℃ Pa.s ) ≤	9.5	8.5	4.0	3.5	5.0	3.0
Feem pua ntawm cov peroxide,%	0.04	0.04	0.05	0.05	0.10	0.10
Nqus dej, wt% ≤	0.05	0.05	0.05	0.05	0.10	0.10
Cov Ntsiab Lus Uas Tsis Txawj Hloov,% ≤	0.5	0.5	0.65	0.65	1.0	1.0
Qhov hnyav ntawm cov molecule	3800-4600	3300-4100	3000-3600	2700-3300	2300-3000	1600-2400
**Ceeb Toom: Peb tuaj yeem ua txhua yam tshiab ntawm HTPB (xws li HTPB uas muaj epoxidized, Ib Pawg Hydroxyl HTPB, Hydrogenated HTPB, thiab lwm yam.) raws li cov neeg siv khoom cov lus qhia.