Uburyo bwo gupima umuriro bukoreshwa mu gupima SK Polyester ES500 (UL94 V0 rating).
I. Uburyo bwo Gushushanya Imiterere
- Guhuza ibintu biri munsi y'ubutaka
- SK Polyester ES500: Polyester ikoreshwa mu buryo bwa thermoplastic ifite ubushyuhe busanzwe bwo gutunganya bwa 220–260°C. Idakoresha umuriro igomba kwihanganira ubu bushyuhe nk'ubu.
- Ibisabwa by'ingenzi: Kugabanya ubukana bw'umuriro (V0), imiterere ya mekanike (imbaraga zo gukurura/ingaruka), n'uburyo bwo gutunganya amazi.
- Sisitemu yo Kurwanya Umuriro Ikoresha Ubudahangarwa
- Ultrafine Aluminium Hydroxide (ATH): Irinda umuriro cyane, amazi mu mubiri. Gutwara ibintu bigomba kuringaniza imiterere y'umuriro n'imikorere yawo.
- Hypophosphite ya Aluminium: Ikorana na ATH mu gukora phosphore-aluminium synergistic effect, ikongera ubwiza bwa char.
- Zinc Borate: Itera imbaraga mu kongera umwotsi, ikagabanya umwotsi, kandi igakora uruzitiro rurerure hamwe na ATH.
- MCA (Melamine Cyanurate): Irinda umuriro mu gihe cya gaze, igabanya ogisijeni kandi ikabuza amazi gushonga.
II. Uburyo bwo gushushanya busabwa (Ijanisha ry'uburemere)
| Igice | Igipimo | Inyandiko zo Gutunganya |
|---|---|---|
| SK Polyester ES500 | 45–50% | Resin yo mu ishingiro; hitamo urwego rw'amazi menshi kugira ngo wishyure ubukana bw'umunyu. |
| ATH nziza cyane | 25–30% | Ubuso bwahinduwe hakoreshejwe uburyo bwo guhuza bwa silane (KH-550), D50 < 3 μm. |
| Hypophosfite ya aluminiyumu | 10–12% | Irinda ubushyuhe (>300°C), ivanzwe mbere na ATH hanyuma yongerwamo mu byiciro. |
| Borate ya Zinc | 6–8% | Yongewe hamwe na MCA kugira ngo hirindwe kwangirika kw'inyubako cyane. |
| MCA | 4–5% | Ubushyuhe bw'imikorere < 250°C, gukwirakwira mu muvuduko muto. |
| Imashini itatanya | 2–3% | Imashini igabanya ubushyuhe ikoreshwa na polyester (urugero, BYK-161) + imvange ya polyethylene. |
| Umukozi Uhuza (KH-550) | 1% | Ivura mbere ya ATH na hypophosphite ya aluminiyumu; iterwa na ethanol hanyuma ikama. |
| Umuti urwanya gutonyanga | 0.5–1% | Ifu nto ya PTFE yo gukumira gushyuha kw'umuriro. |
| Ubufasha mu gutunganya | 0.5% | Zinc stearate (gusiga amavuta no kwirinda gufatana). |
III. Igenzura ry'Ibikorwa by'Ingenzi
- Guteza imbere gukwirakwiza
- Mbere yo kuvurwa: Shyira ATH na hypophosphite ya aluminiyumu mu gipimo cya 1% cya KH-550 ethanol mu gihe cy'amasaha 2, hanyuma wumishe kuri 80°C.
- Uburyo bwo kuvanga:
- Resin y'ibanze + igabanya ubushyuhe + ikintu gihuza → Kuvanga mu muvuduko muto (500 rpm, iminota 5).
- Ongeraho ATH/aluminiyamu hypophosphite yahinduwe → Gukata umuvuduko mwinshi (2500 rpm, iminota 20).
- Ongeraho zinc borate/MCA/PTFE → Kuvanga umuvuduko muto (800 rpm, iminota 10).
- Ibikoresho: Imashini ikoresha screw ebyiri (ahantu hashyuha: ahantu ho kugaburira 200°C, ahantu ho gushonga 230°C, ahantu ho gushyuha 220°C).
- Kugenzura Ubushyuhe mu Gutunganya
- Menya neza ko ubushyuhe bushongeshejwe buri munsi ya 250°C kugira ngo wirinde ko MCA ibora (MCA ibora kuri 250–300°C).
- Udupira dukonjeshwa n'amazi nyuma yo gusohoka kugira ngo hirindwe ko umuriro udashobora kwimuka.
IV. Uburyo bwo guhuza ibikorwa butuma umuriro udashira
- ATH + Aluminium Hypophosphite
- ATH ifata ubushyuhe ikanarekura umwuka w'amazi, igagabanya imyuka ishobora gushya.
- Hypophosphite ya aluminiyumu itera imbaraga mu miterere y’ibara ry’umutuku (AlPO₄), ikabuza ubushyuhe kwimuka.
- Zinc Borate + MCA
- Zinc borate ikora uruzitiro rusa n'ikirahure hejuru y'imivuniko y'ivu.
- MCA irabora kugira ngo ikuremo NH₃, igagabanya ogisijeni kandi ikabuza ibikorwa bya radicals zigenga.
- PTFE irwanya gutonyanga
- Ifu nto ya PTFE ikora urusobe rw'imitsi, bigabanya ibyago byo gushya kw'amazi.
V. Gutunganya no Gukemura Ibibazo by'Imikorere
| Ikibazo Gisanzwe | Umuti |
|---|---|
| Kudakomeza gutwika kw'umuriro munsi ya V0 (V1/V2) | Ongera aluminium hypophosphite kuri 12% + MCA kuri 5%, cyangwa ongeramo 2% ya fosifore itukura ivanze (ihuza na aluminium hypophosphite). |
| Imiterere yagabanutse ya mekanike | Gabanya ATH kugeza kuri 25%, ongeramo 5% bya fibre y'ikirahure (ingufu zo kongeramo imbaraga) cyangwa 3% bya POE ya maleic anhydride (ingufu zo gukomeretsa). |
| Uburyo bwo gutunganya ibintu budakora neza | Ongeramo imashini igabanya ubushyuhe kugeza kuri 3%, cyangwa ongeramo ishashi ya polyethylene ifite megawati nkeya ya 0.5% (amavuta). |
| Ubuso bw'indabyo bukura | Ongera urugero rw'ibipimo by'ibice bihuza cyangwa uhindure kuri titanate coupling agent (NDZ-201) kugira ngo urusheho guhuza neza hagati y'ibice. |
VI. Ibipimo byo kwemeza
- Ikizamini cya UL94 V0:
- Ingero za mm 1.6 na mm 3.2, igihe cyose cyo gutwika < amasegonda 50 nyuma yo gushya kabiri, nta gushya gutonyanga.
- LOI: Intego ≥30% (ukuri ≥28%).
- Imiterere ya mekanike:
- Ingufu zo gukurura > 40 MPa, imbaraga zo gukubita > 5 kJ/m² (igipimo ngenderwaho cya ASTM).
- Guhagarara k'ubushyuhe (TGA):
- Ibisigazwa bya Char kuri 800°C > 20%, ubushyuhe bwa mbere bwo kubora > 300°C.
VII. Incamake y'ingero z'ifatizo
| Igice | Ibikubiye (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (yahinduwe) | 28% |
| Hypophosfite ya aluminiyumu | 11% |
| Borate ya Zinc | 7% |
| MCA | 4% |
| BYK-161 Dispersant | 2.5% |
| Umukozi wo guhuza KH-550 | 1% |
| Umuti wa PTFE urwanya gutonyanga | 0.8% |
| Stearate ya Zinc | 0.5% |
Iyi miterere n'imiterere y'imikorere bitanga umusaruro mwiza ku buryo bwo kwirinda umuriro wa UL94 V0 kuri SK Polyester ES500 mu gihe bipima ubushobozi bwo gutunganya no gukoresha ikoranabuhanga. Igeragezwa rito rirasabwa kugira ngo harebwe uburyo bwo gukwirakwira mbere yo gutunganya neza ingano y'umuriro (urugero: kuringaniza aluminium hypophosphite na MCA). Kugira ngo wongere imbaraga zo kwirinda umuriro, tekereza kongeramo 2% bya boron nitride nanosheets (BNNS) nk'ibikoresho bibiri bikoresha ubushyuhe/umuriro.
More info., pls contact lucy@taifeng-fr.com
Igihe cyo kohereza: Nyakanga-01-2025
