Ko te Hanganga Whakamutunga Ngaahi-a-Halogen mo te punaha whakakikorua TPU ma te whakamahi DMF Solvent
Mo nga punaha whakakikorua TPU e whakamahi ana i te Dimethyl Formamide (DMF) hei whakarewa, ko te whakamahi i te konumohe hypophosphite (AHP) me te zinc borate (ZB) hei aukati mura me te aro turuki nahanaha. Kei raro nei he tātaritanga me te mahere whakatinanatanga:
I. Te Taatari Whaihua o te Aluminium Hypophosphite (AHP)
1. Hangaia te mura me nga Painga
- Hangaia:
- Ka pirau i te wera nui ki te whakaputa waikawa ūkuikui me te waikawa metaphosphoric, e whakatairanga ana i te hanga waro i roto i te TPU (te whakakoi i te mura o te ahi).
- Ka tuku i te PO· tuwhenawhe ki te haukoti i nga tauhohenga mekameka ngingiha (te hau-waahi mura mura).
- Painga:
- Kore-kore, he auahi iti, he paitini, he pai ki te RoHS/REACH.
- He pai te pumau o te waiariki (te mahana pirau ≈300°C), e tika ana mo nga tukanga whakamaroke TPU (te nuinga <150°C).
2. Nga Wero Tono me nga Whakataunga
| Wero | Rongoā |
| Te marara kino i DMF | Whakamahia te AHP kua whakarerekētia-mata (hei tauira, te kaihoko hononga silane KH-550). Te tukanga o mua marara: AHP mira-poro me te DMF me te dispersant (hei tauira, BYK-110) ki te rahi matūriki <5μm. |
| Te whakaritenga uta teitei (20-30%) | Te whakakotahitanga me te ZB me te melamine cyanurate (MCA) hei whakaiti i te uta katoa ki te 15-20%. |
| Whakaitihia te whakamaarama paninga | Whakamahia te AHP rahi-nano (te rahi o te matūriki <1μm) ka whakakotahi ranei ki nga parenga mura marama (hei tauira, te phosphates waro). |
3. Te Hanga me te Tukatuka Manakohia
- Tauira Hanga:
- TPU/DMF turanga: 100 phr
- AHP-whakarereke-mata: 20 phr
- Zinc borate (ZB): 5 phr (te whakakotahitanga o te pehi auahi)
- Marara (BYK-110): 1.5 phr
- Tukatuka Tohu Matua:
- Whakaranu-mua i te AHP me te dispersant me te wahanga DMF i raro i te kutikuti teitei (≥3000 rpm, 30 min), ka whakakotahi ki te slurry TPU.
- Te whakamaroke i muri i te paninga: 120-150°C, whakaroa te wa ma te 10% hei whakarite kia oti te whakaetonga DMF.
II. Te Taatari Whainga mo te Zinc Borate (ZB)
1. Hangaia te mura me nga Painga
- Hangaia:
- Ka hanga he paparanga karaehe B₂O₃ ki te wera nui, ka aukati i te hāora me te wera (te whakaroa i te mura o te ahi).
- Ka tuku i te wai herea (~13%), te waimeha hau mura me te whakamatao i te punaha.
- Painga:
- He kaha te mahi tahi me te AHP me te konumohe trihydroxide (ATH).
- He pai te whakakore i te auahi, he pai mo nga tono auahi-iti.
2. Nga Wero Tono me nga Whakataunga
| Wero | Rongoā |
| He pai te noho marara | Whakamahia te ZB (<500nm) rahi-nano me nga mea whakamakuku (hei tauira, TegoDispers 750W). |
| He iti te pai o te aukati mura (he nui te utaina e hiahiatia ana) | Whakamahia hei kaitoi (5-10%) me nga parenga mura tuatahi (hei tauira, te AHP, te ūkuikui waro ranei). |
| He ngawari te whakakikorua | Utuhia ki te whakakikorua (hei tauira, DOP, polyester polyols ranei). |
3. Te Hanga me te Tukatuka Manakohia
- Tauira Hanga:
- TPU/DMF turanga: 100 phr
- ZB Nano-rahi: 8 phr
- AHP: 15 ph
- He kaihoko maku (Tego 750W): 1 phr
- Tukatuka Tohu Matua:
- Marara-mua ZB i DMF mā te mira pirepire (te rahi matūriki ≤2μm) i mua i te ranu ki te slurry TPU.
- Whakaroahia te wa whakamaroke (hei tauira, 30 min) kia kore ai te toenga o te makuku e pa ana ki te mura o te mura.
III. Aromātai Synergistic o AHP + ZB Pūnaha
1. Nga Paanga Whakawaahi Ngai Ahi
- Te Waa-Hau me te Waa-Waihanga Hangarite:
- Ko te AHP he ūkuikui mo te ngongo, ko te ZB ka whakapumau i te paparanga waro me te peehi i te kanapa.
- LOI whakakotahi: 28-30%, UL94 V-0 (1.6mm) ka taea.
- Te Paoa:
- Ka whakaitihia e te ZB te tuku auahi ma te> 50% (Whakamātautau Cone Calorimeter).
2. Nga Tohunga Whakataurite Mahinga
- Kapeneheihana Taonga Hangarau:
- Tāpirihia te 2-3% TPU plasticizer (hei tauira, polycaprolactone polyol) kia mau tonu te ngawari (te roa >300%).
- Whakamahia nga paura ultrafine (AHP/ZB <2μm) hei whakaiti i te ngaronga o te kaha.
- Mana Pumau Tukatuka:
- Kia mau tonu te slurry viscosity i te 2000-4000 cP (Brookfield RV, spindle 4, 20 rpm) mo te paninga rite.
IV. Whakatauritenga ki te Wairewa-Based Liquid Flame Retardants
| Tawhā | Pūnaha AHP + ZB | Wai Phosphorus-Nitrogen FR (hei tauira, Levagard 4090N) |
| Uta ana | 20-30% | 15-25% |
| Te Marara Uaua | Me maimoatanga o mua (he kutikuti teitei/whakarereketanga mata) | Te whakakore tika, kaore e hiahiatia te whakamararatanga |
| Utu | Iti (~$3-5/kg) | Teitei (~$10-15/kg) |
| Te Painga Taiao | Kore-halogen, iti te paitini | Kei roto pea nga halogens (e whakawhirinaki ana ki nga hua) |
| Whakakapi Puataata | Semi-translucent ki puatakore | Tino marama |
V. Nga Tikanga Whakatinana Kua Manakohia
- Whakamātautau Tauine Taiwhanga:
- Aromātaihia te AHP/ZB takitahi me te whakakotahitanga (whakaekenga rōnaki: 10%, 15%, 20%).
- Aromatawai i te pumau o te marara (kaore he parataiao i muri i te 24h), te huringa pokey, me te riterite o te paninga.
- Whakamana Tauine-Pilot:
- Arotau i nga tikanga whakamaroke (wa/mahana) me te whakamatautau i te mura o te mura (UL94, LOI) me nga taonga miihini.
- Whakatauritea nga utu: Ki te whakaitihia e te AHP+ZB nga utu ma te >30% ki nga FR wai, ka taea te ohanga.
- Whakaritenga Tauine:
- Mahi tahi me nga kaiwhakarato ki te whakawhanake i nga waahanga matua AHP/ZB kua marara-mua (i runga i te DMF) mo te hanga ngawari.
VI. Whakamutunga
Ma nga tukanga whakamararatanga e whakahaeretia ana, ka taea e AHP me ZB te mahi hei aukati mura whai hua mo nga paninga TPU/DMF, inaa:
- Te whakarerekētanga o te mata + te marara kutikuti teiteika whakamahia hei aukati i te whakahiatotanga matūriki.
- AHP (tuatahi) + ZB (whakakotahi)ka whakataurite i te pai me te utu.
- Moteitei te marama / ngawariKo nga whakaritenga, ko nga FRs ūkuikui-hauota wai (hei tauira, Levagard 4090N) ka pai ake.
Sichuan Taifeng New Flame Retardant Co., Ltd.(ISO & REACH)
Email: lucy@taifeng-fr.com
Te wa tuku: Mei-22-2025
