Kua silicone roj hmab rau fiberglass txheej
Kev sivKua Silicone Roj Hmab (LSR)Txog cov txheej fiberown muaj qhov tshwj xeeb, hloov tau yooj yim, thiab ib puag ncig tsis kam. Hauv qab no yog cov lus qhia ntxaws ntxaws qhia txog kev xaiv cov khoom siv, cov qauv siv, kho, thiab kev coj ua zoo.
1. Vim li cas siv cov kua silicone roj hmab (LSR) rau cov fiberglass?
Kev hloov tshiab tshaj: Withstands fiberglass flexing tsis muaj kev tawg.
Huab Daus Kub Kuj({-50 degree rau +250 degree).
UV & Tshuaj lom neeg Kuj: Zoo tagnrho rau sab nraum zoov \/ Kev Siv Khoom Siv.
Waterproof & Tsis muaj tshuaj lom: Muaj kev nyab xeeb rau cov ntawv thov marine thiab kev kho mob.
2. Hom LSR rau Cov Ntsuas Fiberglass Txheej
| Ntaus | Cov Khoom Siv Tseem Ceeb | Cov Kev Siv Zoo Tshaj |
|---|---|---|
| RTV -2 (ob-tshooj LSR) | Lub zog kub siab, tus kheej txoj kev ntsuas tus kheej | Tej nkoj nquam, Automotive, vov tsev. |
| Platinum-kho lsr | Cov Kws Kho Mob, Ultra-du tas | Aerospace, khoom noj khoom haus muaj chaw nyob. |
| Condensation-kho lsr | Seev rov qab, tus nqi qis | Muaj cov ntsaws ruaj ruaj, qauv qauv. |
3. Cov theem nrab ntawm-kauj ruam daim ntawv thov qhia
Kauj ruam 1: Kev npaj txawv
Huv: Siv acetone lossis isopropyl cawv kom tshem tawm roj \/ khib nyiab.
Suab zeb: Muas Aprade nrog 180-220 grit Sandpaper rau Adhesion.
Prime (yog tias xav tau): Siv Silicone Adhesion Promoter (piv txwv,Dow Corning 1205).
Kauj ruam 2: Kev sib xyaw (rau ob feem LSR)
Feem tsawg: Feem ntau 1: 1 (A: B) - Ua raws cov chaw tsim khoom lag luam.
Degassing: Lub tshuab nqus tsev (~ {0. 1 bar rau 5-10 mins) kom tshem cov npuas.
Kauj ruam 3: Cov qauv kev thov
Kev txhuam hniav \/ dov: Siv cov npuas kib rau cov tsho nyias nyias (0. 5-2 mm).
Txau: Yuav tsum muaj LSR nrog viscosity tsawg (piv txwv li,Lub sijhawm txwv tsis pub 6040).
Ntsw: Rau txawm tias cov kev pab them nqi rau ntawm cov duab nyuaj (piv txwv li, cov fiberglass ducts).
Kauj ruam 4: Kho
Chav tsev-temp kho: 24-48 teev (sai dua nrog cua sov; 80-120 degree rau 1-4 hrs).
Post-Kho: Ci ntawm 150 Qib rau 2 teev los txhim kho cov yam ntxwv.
4. Kev txiav txim siab
Qhov tuab: 1-3 hli kev ua siab zoo (cov txheej txheej tuab tshaj plaws txo qis yooj yim).
Kua nplaum: Test peel strength (>20 n \/ cm rau kev siv).
Viscosity: Tsawg-viscosity LSR (500-5, 000 cp) ntws zoo dua rau cov ncauj lus kom ntxaws.
5. Cov Teeb Meem Ntau & Txhim Kho
| Teeb meem | Kev kom | Lus teb |
|---|---|---|
| Ntses muag | Cov tshuaj tsis huv | Rov qab huv nrog acetone. |
| Cov pa npuas | Tsis Raws Cai degrassing | Nqus Degas ua ntej thov. |
| Cov nplaum tsis zoo | Tsis yog Primer | Siv tus txhawb nqa khoom. |