Qaabaynta Tixraaca Heerka Sare ee PVC ee Ka-hortagga Ololka
Naqshadeynta iyo hagaajinta qaacidooyinka heerka sare ee dab-damiska PVC, oo ay ku jiraan dab-damiyaasha jira iyo qaybaha muhiimka ah ee isku-dhafka ah, oo bartilmaameedsanaya dab-damiyaasha UL94 V0 (lagu hagaajin karo V2 iyadoo la dhimayo tirada waxyaabaha lagu daro).
I. Talo soo jeedinta Qaaciddada Salka ah (PVC adag)
Qaabaynta Ka-hortagga Ololka Balaastikada ah:
| Qaybta | Soo raraya (wt%) | Sharaxaadda Shaqada |
|---|---|---|
| Resin PVC (nooca SG-5) | 40-50% | Matoorka Matrix, gaar ahaan heerka nuugista saliidda oo hooseeya |
| Aluminium hypophosphite | 12-15% | Ilaha aashitada ee sameynta abuurka, waxay xakameysaa iftiinka ka dib |
| Zinc borate | 8-10% | Xakamaynta qiiqa ee isku dhafan, waxay la falgashaa HCl ka timaadda kala-goynta PVC |
| Aluminium hydroxide oo dusha sare wax laga beddelay | 10-12% | Qaboojinta endothermic, waxay u baahan tahay dahaarka wakiilka isku xidhka silane (heerkulka kala-baxa wuxuu la mid yahay habka PVC) |
| Trioksaydh-ka Antimony (Sb₂O₃) | 3-5% | Isku-duwaha aasaasiga ah, wuxuu xoojiyaa dib-u-dhaca ololka iyada oo loo marayo isku-dhafka Cl-Sb |
| Zinc molybdate (xakameeyaha qiiqa) | 5-8% | Waxyaabaha lagu daro ee lagu taliyay, waxay yareysaa cufnaanta qiiqa (muhiim u ah u hoggaansanaanta DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Kaalmada sameynta Char-forming, waxay hagaajisaa xakamaynta dhalaalka-dhibcaha |
| Xasiliyaha kulaylka (isku-darka Ca-Zn) | 3-4% | Muhiim u ah ka hortagga burburka kulaylka inta lagu jiro farsamaynta |
| Balaastiig-celiye (DOP ama beddel deegaan) | 0-8% | Hagaaji adkaanta (ikhtiyaar u ah PVC adag) |
| Saliidayn (kalsiyum stearate) | 1-1.5% | Waxay hagaajisaa habka wax loo qabto, waxayna ka hortagtaa in la duubo |
| Gargaarka farsamaynta (ACR) | 1-2% | Waxay xoojisaa balaastikada iyo kala firdhinta masterbatch-ka |
II. Mabaadi'da Muhiimka ah ee Hagaajinta
- Nidaamka Isku-dhafka ah ee Ka-hortagga Ololka
- Isku-xidhka Cl-Sb: Koloriin-ka PVC ee ku jira (56%) oo lagu daray 3-5% Sb₂O₃ waxay samaysaa caqabad SbCl₃ ah, taasoo awood u siinaysa dib-u-dhaca ololka laba-geesoodka ah ee gaaska/wajiga isku-dhafan.
- Xakamaynta Qiiqa: Zinc molybdate + zinc borate waxay hoos u dhigtaa cufnaanta qiiqa >40% (ASTM E662).
- Horumarinta Char: Aluminium hypophosphite + DPE waxay soo saartaa phosphate ester char oo isku xiran heerkul ah 200–250°C, taasoo magdhab u ah yaraanta PVC ee marxaladaha hore.
- La qabsiga Habaynta
- Iswaafajinta Heerkulka: Aluminium hypophosphite (burbur ≥250°C) iyo Al(OH)₃ oo dusha sare wax laga beddelay (xasilloon ilaa >200°C) oo ku habboon farsamaynta PVC (160–190°C).
- Hubinta Xasilloonida: Xasiliyayaashu waxay ka hortagaan burburka resin-ka ee ka yimaada sii deynta HCl; ACR waxay ka caawisaa balaastiga nidaamyada buuxiya badan.
- Dheelitirka Waxqabadka
- Wadarta guud ee rarista dab-damiska: 35–45%, haynta xoogga la riixo ≥80% (caadi ahaan ≥40 MPa ee PVC-ga adag).
- Si aad u hesho dabacsanaan (PVC dabacsan), ku beddel DOP saliid soybean ah oo 8% epoxidized ah (laba balaastig/damiye olol).
III. Tijaabada iyo Cabbirka Xaqiijinta
Dib u dhigista Ololka:
- UL94 V0 (dhumucdiisuna waa 1.6 mm)
- Xaddidaadda Tusmada Ogsijiinta (LOI) ≥32%
Xakamaynta Qiiqa:
- Tijaabada qolka qiiqa ee NBS: Cufnaanta ugu badan ee gaarka ah ee indhahaDs≤150 (qaabka ololka)
Sifooyinka Farsamada:
- Xoogga jiidista ≥35 MPa (adag), dheereynta marka la nasto ≥200% (dabacsan)
Xasiloonida Kulaylka:
- DMA waxay xaqiijinaysaa inaysan jirin hoos u dhac ku yimid modulus-ka 180°C.
IV. Hagaajinta Kharashka & Deegaanka u Wanaagsan
Beddelka Qiimo Jaban:
- Hoos u dhig zinc molybdate ilaa 3%, qayb ahaan ku beddel Al(OH)₃ Mg(OH)₂ (kor u qaad ilaa 15%).
Xalka aan Antimony-ka lahayn:
- Ka saar Sb₂O₃, isticmaal 2% aluminium diethylphosphinate + 5% nano-kaolin (waxtar yar ayuu hoos u dhacayaa; waxay u baahan tahay dhumuc 3 mm ah V0).
Mudnaanta Qiiqa:
- Ku dar 1% kaarboon madow oo silikoon ah oo lagu dahaadhay resin silikoon si aad u sii yareyso cufnaanta qiiqa 15%.
V. Tilmaamaha Habaynta
- Taxanaha Isku-darka:
Resin PVC → xasiliye + saliideeye → waxyaabaha joojiya ololka (cufnaanta hoose ilaa sare) → balaastigeeye (kuwa ugu dambeeya ee lagu buufiyo). - Heerkulka Habaynta:
Aagagga laba-boolal ee wax lagu shubo: 160°C (quudinta) → 170°C (dhalaalidda) → 180°C (isku darka) → 175°C (madaxa dhididka). - Xoojinta Heerka Sare:
Ku talinaynaa 50% rarid; ku qas 1:1 PVC bikro ah si loogu sameeyo qaabaynta duritaanka ugu dambeeya.
Qaaciddadani waxay dheellitirtaa dib-u-dhaca ololka sare, qiiqa hooseeya, iyo xasilloonida habaynta. Tijaabooyin yaryar ayaa lagula talinayaa ka hor inta aan la cabbirin, iyadoo la hagaajinayo iyadoo lagu saleynayo qaabka badeecada (xaraashyada, fiilooyinka, iwm.).
More info., pls contact lucy@taifeng-fr.com
Waqtiga boostada: Luulyo-08-2025
