Ukwenziwa kweHalogen-Free Flame Retardant Formulation yeNkqubo yokuNcamathela iTPU kusetyenziswa i-DMF Solvent
Kwiinkqubo zokugquma zeTPU ezisebenzisa iDimethyl Formamide (DMF) njengesinyibilikisi, ukusetyenziswa kwe-aluminium hypophosphite (AHP) kunye ne-zinc borate (ZB) njengezinto ezithintela ilangatye kufuna uvavanyo olucwangcisiweyo. Apha ngezantsi kukho uhlalutyo oluneenkcukacha kunye nesicwangciso sokusebenza:
I. Uhlalutyo Lokwenzeka Kwe-Aluminium Hypophosphite (AHP)
1. Indlela Yokuthintela Ilangatye Neenzuzo
- Indlela yokusebenza:
- Iyabola kumaqondo obushushu aphezulu ukuze ivelise i-phosphoric kunye ne-metaphosphoric acids, ikhuthaza ukwakheka kwe-char kwi-TPU (i-condensed-phase flame retardancy).
- Ikhupha ii-PO· radicals ukuze ziphazamise ukusabela kwe-combustion chain (ukungalawuleki kwe-gas-phase flame).
- Iingenelo:
- Ayina-halogen, ayinamsi uphantsi, ayinatyhefu ingako, ihambelana ne-RoHS/REACH.
- Uzinzo olufanelekileyo lobushushu (ubushushu bokubola ≈300°C), lufanelekile kwiinkqubo zokomisa ze-TPU (ngesiqhelo <150°C).
2. Imingeni kunye nezisombululo zeSicelo
| Umngeni | Isisombululo |
| Ukusasazeka okubi kwi-DMF | Sebenzisa i-AHP eguqulweyo kumphezulu (umz., i-silane coupling agent KH-550). Inkqubo yokusasaza ngaphambi kokusasaza: I-Ball-mill AHP ene-DMF kunye ne-dispersant (umz., i-BYK-110) ukuya kubukhulu be-particle <5μm. |
| Imfuneko ephezulu yokulayisha (20-30%) | Ukudibanisa okusebenzisanayo kunye ne-ZB okanye i-melamine cyanurate (MCA) ukunciphisa umthwalo opheleleyo ukuya kwi-15-20%. |
| Ukunciphisa ukucaca kwengubo | Sebenzisa i-AHP enobukhulu obuncinci (ubukhulu bamasuntswana <1μm) okanye udibanise nezinto ezithintela ilangatye ezibonakalayo (umz., ii-organic phosphates). |
3. Indlela Ecetywayo Yokwenza Nokwenza
- Umzekelo Wokwenziwa:
- Isiseko seTPU/DMF: 100 phr
- I-AHP eguqulweyo kumphezulu: 20 phr
- I-Zinc borate (ZB): 5 phr (intsebenziswano yokunciphisa umsi)
- Umsasazi (BYK-110): 1.5 phr
- Amanqaku aPhambili eNkqubo:
- Xuba i-AHP kwangaphambili kunye ne-dispersant kunye ne-DMF engaphelelanga phantsi kwe-high shear (≥3000 rpm, imizuzu engama-30), uze udibanise ne-TPU slurry.
- Ukomisa emva kokufaka: 120-150°C, yandisa ixesha nge-10% ukuqinisekisa ukufuma okupheleleyo kwe-DMF.
II. Uhlalutyo Lokwenzeka Kwe-Zinc Borate (ZB)
1. Indlela Yokuthintela Ilangatye Neenzuzo
- Indlela yokusebenza:
- Yenza umaleko weglasi we-B₂O₃ kumaqondo obushushu aphezulu, uvimba ioksijini kunye nobushushu (ukungavuthi komlilo okwisigaba esixineneyo).
- Ikhupha amanzi abambeneyo (~13%), inyibilikisa iigesi ezivuthayo kwaye ipholisa inkqubo.
- Iingenelo:
- Isiphumo esinamandla sokusebenzisana kunye ne-AHP okanye i-aluminium trihydroxide (ATH).
- Ukuphelisa umsi ngendlela egqwesileyo, efanelekileyo ekusetyenzisweni komsi omncinci.
2. Imingeni kunye nezisombululo zeSicelo
| Umngeni | Isisombululo |
| Ukungazinzi kakuhle kokusasazeka | Sebenzisa i-ZB (<500nm) enobukhulu obuncinci kunye nee-wetting agents (umz., i-TegoDispers 750W). |
| Ukusebenza kakuhle okubambezela ilangabi okuphantsi (kufuneka umthwalo ophezulu) | Sebenzisa njenge-synergist (5-10%) kunye ne-primary flame retardants (umz., i-AHP okanye i-organic phosphorus). |
| Ukunciphisa ukuguquguquka kokugqoka | Buyisela ngeeplastiki (umz., ii-DOP okanye ii-polyester polyols). |
3. Indlela Ecetywayo Yokwenza Nokwenza
- Umzekelo Wokwenziwa:
- Isiseko seTPU/DMF: 100 phr
- I-ZB enobukhulu obuncinci: 8 phr
- I-AHP: iiyure ezili-15
- I-arhente yokumanzisa (Tego 750W): 1 phr
- Amanqaku aPhambili eNkqubo:
- Phalaza i-ZB kwi-DMF ngokusebenzisa i-bead milling (ubungakanani be-particle ≤2μm) ngaphambi kokuba uyixube ne-TPU slurry.
- Yandisa ixesha lokomisa (umz., imizuzu engama-30) ukuze kuthintelwe ukufuma okushiyekileyo okuchaphazela ukubambezeleka komlilo.
III. Uvavanyo oluhambelanayo lweNkqubo ye-AHP + ZB
1. Iziphumo eziBambelelayo zeLanga eziHlanganisiweyo
- Intsebenziswano yeSigaba seGesi kunye neSigaba esiNciphisiweyo:
- I-AHP inika i-phosphorus yokutsha, ngelixa i-ZB izinzisa umaleko we-char kwaye icinezela ukukhanya okungasemva.
- I-LOI edibeneyo: 28-30%, i-UL94 V-0 (1.6mm) inokufezekiswa.
- Ukunciphisa Umsi:
- I-ZB inciphisa ukukhutshwa komsi nge->50% (uvavanyo lweCone Calorimeter).
2. Iingcebiso zokulinganisela ukusebenza
- Imbuyekezo yePropati yoomatshini:
- Yongeza i-2-3% ye-TPU plasticizer (umz., i-polycaprolactone polyol) ukuze ugcine ukuguquguquka (ukunwebeka >300%).
- Sebenzisa iipowders ezithambileyo kakhulu (AHP/ZB <2μm) ukunciphisa ukulahleka kwamandla okutsalwa.
- Ulawulo Lozinzo Lwenkqubo:
- Gcina i-slurry viscosity kwi-2000-4000 cP (Brookfield RV, spindle 4, 20 rpm) ukuze igqunywe ngokulinganayo.
IV. Uthelekiso nezinto ezithintela umlilo ezisekelwe kwiSolvent
| Ipharamitha | Inkqubo ye-AHP + ZB | Ulwelo lwePhosphorus-Nitrogen FR (umzekelo, iLevagard 4090N) |
| Iyalayisha | 20-30% | 15-25% |
| Ubunzima bokusasazeka | Ifuna unyango lwangaphambi kokuba ilungiswe (ukulungiswa okuphezulu/umphezulu) | Ukuchithwa ngokuthe ngqo, akukho mfuneko yokusasazwa |
| Ixabiso | Ephantsi (~$3-5/kg) | Phezulu (~$10-15/kg) |
| Impembelelo kwiNdalo | Ayina-halogen, inetyhefu ephantsi | Isenokuba neehalogens (ezixhomekeke kwimveliso) |
| Ukucaca kokwaleka | Iguquguquka kancinci ukuya kwi-opaque | Ibonakala ngokucacileyo kakhulu |
V. Amanyathelo Okuphumeza Acetyiswayo
- Uvavanyo lweLebhu:
- Vavanya i-AHP/ZB nganye nganye kwaye idityaniswe (ukulayisha i-gradient: 10%, 15%, 20%).
- Hlola uzinzo lokusasazeka (akukho sedimentation emva kweeyure ezingama-24), utshintsho lwe-viscosity, kunye nokufana kwe-coating.
- Ukuqinisekiswa kweSikali sePilot:
- Lungiselela iimeko zokomisa (ixesha/ubushushu) kwaye uvavanye ukuba idangatye alinakubanda (UL94, LOI) kunye neempawu zoomatshini.
- Thelekisa iindleko: Ukuba i-AHP+ZB inciphisa iindleko nge >30% xa ithelekiswa ne-liquid FRs, iyasebenza ngokwezoqoqosho.
- Ukulungiselela Ukwandisa Ubungakanani:
- Sebenzisana nabathengisi ukuze uphuhlise ii-masterbatches ze-AHP/ZB ezisasazekileyo (ezisekelwe kwi-DMF) ukuze kube lula ukuvelisa.
VI. Isiphelo
Ngeenkqubo zokusasazwa ezilawulwayo, i-AHP kunye ne-ZB zinokusebenza njengezithinteli zomlilo ezisebenzayo kwiingubo ze-TPU/DMF, ukuba:
- Ukuguqulwa komphezulu + ukusasazwa okuphezuluisetyenziselwa ukuthintela ukuhlangana kwamasuntswana.
- I-AHP (eyintloko) + i-ZB (i-synergist)ilinganisa ukusebenza kakuhle kunye neendleko.
- Ngokubaukucaca/ukuguquguquka okuphezuluIimfuno, ii-FR ze-phosphorus-nitrogen ezingamanzi (umz., iLevagard 4090N) zihlala zingcono.
ISichuan Taifeng New Flame Retardant Co., Ltd. (ISO & REACH)
Email: lucy@taifeng-fr.com
Ixesha lokuthumela: Meyi-22-2025
