Uburyo bwo gushushanya bwa PVC Flame Retardant Masterbatch
Gushushanya no kunoza imiterere ya PVC fire retardant masterbatch, ikubiyemo fire retardant zisanzweho n'ibice by'ingenzi bihuza, bigamije UL94 V0 fire retardancy (ishobora guhindurwa kuri V2 binyuze mu kugabanya ingano y'inyongera).
I. Icyifuzo cy'ishingiro rya formula (PVC ikomeye)
Uburyo bwo gukora imashini ikoresha umuriro wa pulasitiki:
| Igice | Gupakira (uburemere%) | Ibisobanuro by'Imikorere |
|---|---|---|
| Resin ya PVC (ubwoko bwa SG-5) | 40-50% | Ibikoresho bya matrix, byaba byiza bitabasha gufata amavuta menshi |
| Hypophosfite ya aluminiyumu | 12-15% | Isoko ya aside yo gukora char, igabanya urumuri rw'inyuma |
| Borate ya zinki | 8-10% | Guhagarika umwotsi mu buryo buhuriweho, bihura na HCl bivuye ku kubora kwa PVC |
| hydroxide ya aluminiyumu yahinduwe hejuru | 10-12% | Gukonjesha mu gihe cy'izuba, bisaba ko habaho gutwikira silane (ubushyuhe bwo kubora buhura n'uburyo PVC itunganya) |
| Antimoni trioxyde (Sb₂O₃) | 3-5% | Ikoranabuhanga rituma umuriro udacika binyuze mu guhuza Cl-Sb |
| Zinc molybdate (umuti ugabanya umwotsi) | 5-8% | Inyongeramusaruro zisabwa, zigabanya ubucucike bw'umwotsi (ingenzi mu kubahiriza DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Ifasha mu gukora ishaza, irushaho kugenzura amazi ashongeshwa |
| Iterambere ry'ubushyuhe (Ca-Zn composite) | 3-4% | Ni ngombwa mu kwirinda kwangirika k'ubushyuhe mu gihe cyo gutunganya |
| Imashini ikora pulasitiki (DOP cyangwa ikoreshwa mu buryo burengera ibidukikije) | 0-8% | Hindura niba ikoze neza (si ngombwa ko ikora neza kuri PVC ikomeye) |
| Igikoresho cyo kwisiga (calcium stearate) | 1-1.5% | Binoza uburyo bwo gutunganya ibintu, bikarinda ko roller ifata |
| Ubufasha mu gutunganya (ACR) | 1-2% | Yongera plastike no gukwirakwiza masterbatch |
II. Amahame y'ingenzi yo kunoza imikorere
- Sisitemu yo guhuza imbaraga irinda umuriro
- Cl-Sb Ihuriro: Chlorine isanzwe ya PVC (56%) ivanze na 3-5% Sb₂O₃ ikora uruzitiro rwa SbCl₃, rutuma umuriro udakora neza mu buryo bubiri.
- Kugabanya umwotsi: Zinc molybdate + zinc borate bigabanya ubucucike bw'umwotsi ku kigero cya >40% (ASTM E662).
- Guteza imbere Char: Aluminium hypophosphite + DPE ikora phosphoric ester char ifitanye isano na cross-linked kuri 200–250°C, bikishyura ibura rya char ya PVC mu cyiciro cya mbere.
- Uburyo bwo Gutunganya Ibidukikije
- Guhuza ubushyuhe: Aluminium hypophosphite (ibora ≥250°C) na Al(OH)₃ yahinduwe ku buso (ihamye kugeza kuri >200°C) ikwiranye n'itunganywa rya PVC (160–190°C).
- Igenzura ry’Ubudahangarwa: Ibipimo bya Ca-Zn bibuza kwangirika kwa resin mu irekurwa rya HCl; ACR ifasha mu gukwirakwiza plastike mu buryo bwuzuza cyane.
- Ingano y'Imikorere
- Umutwaro wose ugabanya umuriro: 35–45%, imbaraga zo gufata umugozi ≥80% (ubusanzwe ≥40 MPa kuri PVC ikomeye).
- Kugira ngo worohereze (PVC yoroshye), simbura DOP n'amavuta ya soya ya epoxidized 8% (afite pulasitiki ebyiri/agabanya umuriro).
III. Ibipimo byo gupima no kwemeza
Kudakomeza gutwika:
- UL94 V0 (ubugari bwa mm 1.6)
- Igipimo cy'umwuka wa ogisijeni (LOI) ≥32%
Kugenzura umwotsi:
- Ikizamini cya NBS cy'icyumba cy'umwotsi: Ubucucike bw'amatara bwihariye ntarengwaDs≤150 (uburyo bwo gutwika)
Imiterere ya mekanike:
- Ingufu zo gukurura ≥35 MPa (zikomeye), uburebure mu gihe cyo kuruhuka ≥200% (zirahinduka)
Guhagarara neza k'ubushyuhe:
- DMA yemeza ko nta kugabanuka kwa modulus kuri 180°C.
IV. Guhindura Ibiciro n'Isukura Ibidukikije
Ubundi buryo buhendutse:
- Gabanya molybdate ya zinc kuri 3%, usimbuze igice Al(OH)₃ na Mg(OH)₂ (yongereho 15%).
Umuti udafite antimoni:
- Kuraho Sb₂O₃, koresha 2% ya aluminiyumu diethylphosphinate + 5% nano-kaolin (ubushobozi buke gato; bisaba ubugari bwa mm 3 kuri V0).
Icy'ingenzi ku bijyanye no kunywa umwotsi:
- Ongeraho 1% ya silicone resin-coated carbon black kugira ngo ugabanye ubucucike bw'umwotsi ho 15%.
V. Amabwiriza agenga ikorwa ry'ibicuruzwa
- Uburyo bwo kuvanga:
PVC resin → stabilizer + amavuta → ibigabanya umuriro (ubucucike buke kugeza kuri bwinshi) → plasticizer (yongeweho spray nyuma). - Ubushyuhe bwo gutunganya:
Uduce two gusohora ibikoresho by'ubushyuhe: 160°C (gutanga) → 170°C (gushonga) → 180°C (kuvanga) → 175°C (umutwe w'icyuma). - Ubwiyongere bwa Masterbatch:
Nsaba ko washyiramo 50% by'umusaruro; shyiramo 1:1 ukoresheje PVC idahinduka kugira ngo ikoreshwe mu buryo bwa nyuma.
Iyi formula ipima ubushyuhe bwinshi, umwotsi muke, no kudahinduka. Mbere yo gupima, hagomba gukorwa igerageza rito, hagahindurwa hashingiwe ku miterere y'umusaruro (impapuro, insinga, nibindi).
More info., pls contact lucy@taifeng-fr.com
Igihe cyo kohereza: Nyakanga-08-2025
