Ifomyula yokuGqibela eReferensi yeFlame-Retardant yeThermosetting Acrylic Adhesive
Ukuze kuhlangatyezwane neemfuno ze-UL94 V0 ezithintela ilangatye kwiiglu ze-acrylic ezisebenzisa i-thermosetting, kujongwa iimpawu zezithinteli zomlilo ezikhoyo kunye neenkcukacha zeenkqubo ze-thermosetting, kucetyiswa le ndlela ilandelayo yokwenziwa kunye nohlalutyo oluphambili:
I. Imigaqo yoYilo lweFomu kunye neeMfuno zeNkqubo yeThermosetting
- Kufuneka ilingane nobushushu bokunyibilika (ngesiqhelo yi-120–180°C)
- Izinto ezithintela ilangatye kufuneka zinyamezele ukucutshungulwa kobushushu obuphezulu (kuthintelwe ukusilela kokubola)
- Qinisekisa uzinzo lokusasazeka kwiinkqubo ezinoxinano oluphezulu
- Ukulinganisela amandla oomatshini emva konyango kunye nokusebenza kakuhle kokurhoxiswa komlilo
II. Uyilo lweNkqubo eHlanganisayo neLangabi
Imisebenzi ethintela ilangatye kunye nokuhambelana kweThermoset
| Ilangatye elithintelayo | Indima Eyintloko | Ukuhambelana kweThermoset | Ukulayisha Okucetyiswayo |
|---|---|---|---|
| I-ATH ecolekileyo kakhulu | I-FR ephambili: Ukuphelelwa ngamanzi emzimbeni kwi-endothermic, ukunyibilika kwegesi kwisigaba segesi | Ifuna ukuguqulwa komphezulu (ukulwa nokuhlangana) | ≤35% (ukulayisha okugqithisileyo kunciphisa ukudityaniswa) |
| I-hypophosphite ye-aluminiyam | I-Synergist: I-Char catalyst, i-radical scavenger (PO·) | Ukunciphisa ubushushu >300°C, kufanelekile ukunyanga | 8–12% |
| I-borate yeZinc | Isincedisi seChar: Senza umqobo ofana neglasi, sinciphisa umsi | Isebenzisana ne-ATH (Al-BO char) | 5–8% |
| I-MCA (i-Melamine cyanurate) | I-Ges-phase FR: Ikhupha i-NH₃, ithintele ukutsha | Nciphisa ubushushu obuphakathi kwama-250–300°C (ubushushu obucocayo <250°C) | 3–5% |
III. Ukwenziwa Okucetyiswayo (Ubunzima %)
Izikhokelo zokuCwangcisa iiCandelo
| Icandelo | Umlinganiselo | Amanqaku Okucwangciswa Okubalulekileyo |
|---|---|---|
| I-resin ye-acrylic ye-thermoset | 45–50% | Uhlobo lwe-viscosity ephantsi (umz., i-epoxy acrylate) yokulayisha okuphezulu kwezalisa |
| I-ATH eguqulwe ngumphezulu (D50 <5µm) | 25–30% | Inyangwe kwangaphambili nge-KH-550 silane |
| I-hypophosphite ye-aluminiyam | 10–12% | Ixutywe kwangaphambili ne-ATH, yongezwa kwiibhetshi |
| I-borate yeZinc | 6–8% | Yongezwe kunye ne-MCA; thintela ukubola okucoliweyo |
| I-MCA | 4–5% | Ukuxuba ngesantya esiphantsi kwinqanaba lokugqibela (<250°C) |
| I-Dipersant (BYK-2152 + PE wax) | 1.5–2% | Iqinisekisa ukusasazeka okufanayo kwezalisa |
| Iarhente yokudibanisa (KH-550) | 1% | Inyangwe kwangaphambili kwi-ATH/hypophosphite |
| Iarhente yokunyanga (i-BPO) | 1–2% | Isiqalisi sobushushu obuphantsi sokulungisa ngokukhawuleza |
| Iarhente yokulwa nokuphelisa (i-Aerosil R202) | 0.5% | Ukuthintela ukuthuthwa kwenkunkuma ye-Thixotropic |
IV. Ulawulo lweNkqubo oluBalulekileyo
1. Inkqubo yokuSasaza
- Ngaphambi konyango: I-ATH kunye ne-hypophosphite zifakwe kwisisombululo se-5% KH-550/ethanol (iiyure ezi-2, ukomisa kwi-80°C)
- Ulandelelwano lokuxuba:
- I-Resin + i-dispersant → Ukuxuba ngesantya esiphantsi → Yongeza i-ATH/hypophosphite eguquliweyo → Ukusasazwa ngesantya esiphezulu (2500 rpm, imizuzu engama-20) → Yongeza i-zinc borate/MCA → Ukuxuba ngesantya esiphantsi (thintela ukonakala kwe-MCA)
- Izixhobo: Umxube weplanethi (ukususa igesi nge-vacuum) okanye umatshini wokugalela igesi onemiqolo emithathu (weempuphu ezicolekileyo kakhulu)
2. Ukuphucula ukunyanga
- Ukulungiswa kwenyathelo: 80°C/1h (ngaphambi kwejeli) → 140°C/2h (emva konyango, kuphephe ukubola kwe-MCA)
- Ulawulo loxinzelelo: 0.5–1 MPa ukuthintela ukuhla kwezalisa
3. Iindlela zoNxibelelwano
- I-ATH + i-Hypophosphite: Yenza i-AlPO₄-reinforced char ngelixa isusa ii-radicals (PO·)
- I-Zinc borate + i-MCA: Isithintelo esiphindwe kabini segesi (i-NH₃ dilution + umaleko weglasi onyibilikisiweyo)
V. Amaqhinga okulungisa ukusebenza
Iingxaki Eziqhelekileyo kunye Nezisombululo
| Khupha | Unobangela weengcambu | Isisombululo |
|---|---|---|
| Ukutshaya okuvuzayo | Ubuninzi bokunyibilika okuphantsi | Yongeza i-MCA ukuya kwi-5% + i-hypophosphite ukuya kwi-12%, okanye yongeza i-0.5% ye-PTFE micropowder |
| Ukubuthathaka emva kokunyanga | Ukulayisha okugqithisileyo kwe-ATH | Yehlisa i-ATH ukuya kwi-25% + 5% nano-CaCO₃ (ukuqinisa) |
| Ukugcinwa kwenkunkuma | I-thixotropy embi | Yongeza i-silica ukuya kwi-0.8% okanye utshintshele kwi-BYK-410 |
| I-LOI <28% | I-FR enganeleyo yesigaba segesi | Yongeza i-phosphorus ebomvu egqunywe yi-2% okanye i-1% nano-BN |
VI. IiMetriki zoQinisekiso
- I-UL94 V0: Iisampulu ze-3.2 mm, ixesha elipheleleyo lomlilo <50 s (akukho ukutsha komqhaphu)
- I-LOI ≥30% (umda wokhuseleko)
- TGA intsalela >25% (800°C, N₂)
- Ibhalansi yoomatshini: Amandla okutsalwa >8 MPa, amandla okucheba >6 MPa
Izinto ezibalulekileyo ekufuneka ziqwalaselwe
- Ifumana i-V0 rating ngelixa igcina ukuthembeka koomatshini.
- Uvavanyo oluncinci (50g) luyacetyiswa ngaphambi kokuba kulinganiswe.
- Ukuze isebenze kakuhle: 2–3% yee-DOPO derivatives (umz., i-phosphaphenanthrene) zingongezwa.
Le ndlela iqinisekisa ukuthotyelwa kwemigangatho engqongqo yokuthintela umlilo ngelixa iphucula ukuqhubekeka kokusebenza kunye nokusebenza kokugqibela.
Ixesha lokuthumela: Julayi-01-2025
