Ukwakheka Okungashisi Ilangatye Okungangeni Halogen Kwesistimu Yokumboza ye-TPU Kusetshenziswa I-DMF Solvent
Kumasistimu okumboza i-TPU asebenzisa i-Dimethyl Formamide (DMF) njengesinyibilikisi, ukusetshenziswa kwe-aluminium hypophosphite (AHP) kanye ne-zinc borate (ZB) njengezithibi zomlilo kudinga ukuhlolwa okuhlelekile. Ngezansi kunohlelo lokuhlaziya olunemininingwane kanye nohlelo lokusebenzisa:
I. Ukuhlaziywa Kokwenzeka kwe-Aluminium Hypophosphite (AHP)
1. Indlela Yokubambelela Elangeni Nezinzuzo
- Indlela yokusebenza:
- Iyabola emazingeni okushisa aphezulu ukuze ikhiqize ama-asidi e-phosphoric kanye ne-metaphosphoric, ikhuthaze ukwakheka kwe-char ku-TPU (i-condensed-phase flame retardancy).
- Ikhipha ama-radical e-PO· ukuze iphazamise ukusabela kweketanga lokushiswa (ukuvinjelwa komlilo kwesigaba segesi).
- Izinzuzo:
- Ayina-halogen, intuthu ephansi, ubuthi obuphansi, ihambisana ne-RoHS/REACH.
- Ukuqina okuhle kokushisa (izinga lokushisa lokubola ≈300°C), kufanelekile ezinqubweni zokomisa ze-TPU (ngokuvamile <150°C).
2. Izinselele Zokusebenzisa kanye Nezixazululo
| Inselele | Isixazululo |
| Ukuhlakazeka okubi ku-DMF | Sebenzisa i-AHP eguquliwe ebusweni (isb., i-silane coupling agent KH-550). Inqubo yangaphambi kokuhlakazeka: I-Ball-mill AHP ene-DMF kanye ne-dispersant (isb., i-BYK-110) ibe usayizi wezinhlayiya <5μm. |
| Isidingo sokulayisha esiphezulu (20-30%) | Inhlanganisela ehambisanayo ne-ZB noma i-melamine cyanurate (MCA) ukunciphisa umthwalo ophelele ube ngu-15-20%. |
| Ukubonakala okuncishisiwe kokumboza | Sebenzisa i-AHP enobukhulu obuncane (usayizi wezinhlayiya <1μm) noma uhlanganise nezinto ezivimbela ilangabi ezibonakalayo (isb., ama-phosphate e-organic). |
3. Ukwakhiwa kanye Nenqubo Enconywayo
- Isibonelo Sokwakheka:
- Isisekelo se-TPU/DMF: 100 phr
- I-AHP eguquliwe ebusweni: 20 phr
- I-Zinc borate (ZB): 5 phr (ukuvumelanisa kokucindezela intuthu)
- Umsabalalisi (BYK-110): 1.5 phr
- Amaphuzu Ayinhloko Enqubo:
- Hlanganisa i-AHP kusengaphambili ne-dispersant kanye ne-DMF engaphelele ngaphansi kokucheba okuphezulu (≥3000 rpm, imizuzu engama-30), bese uhlanganisa ne-TPU slurry.
- Ukomisa ngemva kokumboza: 120-150°C, kwandisa isikhathi ngo-10% ukuqinisekisa ukuhwamuka okuphelele kwe-DMF.
II. Ukuhlaziywa Kokwenzeka kwe-Zinc Borate (ZB)
1. Indlela Yokubambelela Elangeni Nezinzuzo
- Indlela yokusebenza:
- Yakha ungqimba lwengilazi lwe-B₂O₃ emazingeni okushisa aphezulu, ivimba umoya-mpilo nokushisa (ukuvinjelwa komlilo kwesigaba esinciphile).
- Ikhipha amanzi aboshwe (~13%), inciphise amagesi avuthayo futhi ipholise uhlelo.
- Izinzuzo:
- Umphumela onamandla wokubambisana nge-AHP noma i-aluminium trihydroxide (ATH).
- Ukunciphisa intuthu okuhle kakhulu, kulungele ukusetshenziswa kwentuthu encane.
2. Izinselele Zokusebenzisa kanye Nezixazululo
| Inselele | Isixazululo |
| Ukuzinza kokuhlakazeka okubi | Sebenzisa i-ZB (<500nm) enobukhulu obuncane kanye nama-wetting agents (isb., i-TegoDispers 750W). |
| Ukusebenza kahle okuphansi kokubuyisa ilangabi (kudingeka ukulayisha okuphezulu) | Sebenzisa njenge-synergist (5-10%) kanye ne-primary flame retardants (isb., AHP noma i-organic phosphorus). |
| Ukuguquguquka kokugqoka okuncishisiwe | Khokha ngama-plasticizer (isb., ama-DOP noma ama-polyester polyols). |
3. Ukwakhiwa kanye Nenqubo Enconywayo
- Isibonelo Sokwakheka:
- Isisekelo se-TPU/DMF: 100 phr
- I-ZB enosayizi omncane: 8 phr
- I-AHP: 15 phr
- I-ejenti yokumanzisa (Tego 750W): 1 phr
- Amaphuzu Ayinhloko Enqubo:
- Hlakaza i-ZB kusengaphambili ku-DMF ngokusebenzisa ukugaya ubuhlalu (usayizi wezinhlayiya ≤2μm) ngaphambi kokuxuba ne-TPU slurry.
- Nweba isikhathi sokomisa (isb., imizuzu engama-30) ukuze ugweme umswakama osele othinta ukubambezeleka komlilo.
III. Ukuhlolwa Okuhlangene Kohlelo lwe-AHP + ZB
1. Imiphumela Ehambisanayo Yokuhoxisa Ilangabi
- Ukusebenzisana kweSigaba Segesi kanye Nesigaba Esinciphile:
- I-AHP inikeza i-phosphorus yokusha, kuyilapho i-ZB izinzisa ungqimba lwe-char futhi icindezela ukukhanya kwangemuva.
- I-LOI ehlanganisiwe: 28-30%, i-UL94 V-0 (1.6mm) ingafinyeleleka.
- Ukucindezela Intuthu:
- I-ZB yehlisa ukukhishwa kwentuthu ngo->50% (ukuhlolwa kwe-Cone Calorimeter).
2. Izincomo Zokulinganisela Ukusebenza
- Isinxephezelo Sempahla Yemishini:
- Engeza i-2-3% TPU plasticizer (isb., i-polycaprolactone polyol) ukuze ugcine ukuguquguquka (ukunwebeka >300%).
- Sebenzisa impuphu ze-ultrafine (AHP/ZB <2μm) ukuze unciphise ukulahlekelwa amandla okudonsa.
- Ukulawula Ukuzinza Kwenqubo:
- Gcina i-slurry viscosity ku-2000-4000 cP (Brookfield RV, spindle 4, 20 rpm) ukuze kube nokumbozwa okufanayo.
IV. Ukuqhathaniswa Nezithibi Zomlilo Ezisekelwe Ku-Solvent
| Ipharamitha | Uhlelo lwe-AHP + ZB | I-Liquid Phosphorus-Nitrogen FR (isb, i-Levagard 4090N) |
| Iyalayisha | 20-30% | 15-25% |
| Ubunzima bokuhlakazeka | Kudinga ukwelashwa kwangaphambi kwesikhathi (ukuguqulwa okuphezulu kokusika/komphezulu) | Ukuhlakazeka okuqondile, akukho ukuhlakazeka okudingekayo |
| Izindleko | Okuphansi (~$3-5/kg) | Okuphezulu (~$10-15/kg) |
| Umthelela Wezemvelo | Ayinayo i-halogen, ubuthi obuphansi | Kungaqukatha ama-halogens (kuncike kumkhiqizo) |
| Ukucaca Kokumboza | Kushintsha kancane kuya kokungacaci | Kusobala kakhulu |
V. Izinyathelo Zokusebenzisa Ezinconyiwe
- Ukuhlolwa Kwesilinganiso Selebhu:
- Hlola i-AHP/ZB ngayinye futhi ihlanganiswe (ukulayisha kwe-gradient: 10%, 15%, 20%).
- Hlola ukuqina kokusabalala (akukho ukubola ngemva kwamahora angu-24), izinguquko ze-viscosity, kanye nokufana kwe-coating.
- Ukuqinisekiswa Kwesilinganiso Se-Pilot:
- Lungiselela izimo zokomisa (isikhathi/izinga lokushisa) bese uhlola ukubambezeleka komlilo (UL94, LOI) kanye nezakhiwo zemishini.
- Qhathanisa izindleko: Uma i-AHP+ZB yehlisa izindleko ngo->30% uma kuqhathaniswa nama-FR angoketshezi, iyasebenza ngokwezomnotho.
- Ukulungiselela Ukwandisa Umthamo:
- Sebenzisana nabahlinzeki ukuthuthukisa ama-masterbatches e-AHP/ZB ahlakazekile (asekelwe ku-DMF) ukuze kube lula ukukhiqizwa.
VI. Isiphetho
Ngezinqubo zokuhlakazeka ezilawulwayo, i-AHP kanye ne-ZB zingasebenza njengezithibi zomlilo ezisebenzayo zokumboza i-TPU/DMF, uma nje:
- Ukuguqulwa kwendawo + ukuhlakazeka okuphezuluisetshenziswa ukuvimbela ukuhlangana kwezinhlayiya.
- I-AHP (eyinhloko) + i-ZB (i-synergist)kulinganisela ukusebenza kahle kanye nezindleko.
- Ngobaukucaca/ukuguquguquka okuphezuluUma kunesidingo, ama-FR e-phosphorus-nitrogen acwebile (isb., i-Levagard 4090N) ahlala ethandwa kakhulu.
I-Sichuan Taifeng New Flame Retardant Co., Ltd. (ISO & REACH)
Email: lucy@taifeng-fr.com
Isikhathi sokuthunyelwe: Meyi-22-2025
