Sebopeho sa Halogen-Free Flame Retardant bakeng sa Sistimi ea ho Koahela TPU e Sebelisang DMF Solvent

Sebopeho sa Halogen-Free Flame Retardant bakeng sa Sistimi ea ho Koahela TPU e Sebelisang DMF Solvent

Bakeng sa litsamaiso tsa ho koahela tsa TPU tse sebelisang Dimethyl Formamide (DMF) e le tharollo, tšebeliso ea aluminium hypophosphite (AHP) le zinc borate (ZB) e le lintho tse thibelang malakabe e hloka tlhahlobo e hlophisitsoeng. Ka tlase ke tlhahlobo e qaqileng le moralo oa ts'ebetso:

I. Tlhahlobo ea ho khoneha ha Aluminium Hypophosphite (AHP)

1. Mokhoa le Melemo ea ho Sireletsa Mollo

• Mokhoa:
• E bola mochesong o phahameng ho hlahisa li-acid tsa phosphoric le metaphosphoric, e leng se khothalletsang ho thehoa ha char ho TPU (condensed-phase flame retardncy).
• E lokolla li-radical tsa PO· ho sitisa liketso tsa ketane ea ho tuka (khase-phase la mollo o liehang).
• Melemo:
• Ha e na halogen, mosi o tlase, chefo e tlase, e latela RoHS/REACH.
• Ho tsitsa ho hotle ha mocheso (mocheso oa ho bola ≈300°C), ho loketse lits'ebetso tsa ho omisa tsa TPU (hangata <150°C).

2. Liphephetso le Litharollo tsa Ts'ebeliso

3. Tlhahiso le Tsamaiso e Khothaletsoang

• Mohlala oa ho qapa:
• Motheo oa TPU/DMF: 100 phr
• AHP e fetotsoeng holim'a metsi: 20 phr
• Zinc borate (ZB): 5 phr (kamano e matla ea ho thibela mosi)
• Sehatsetsi (BYK-110): 1.5 phr
• Lintlha tsa Bohlokoa tsa Ts'ebetso:
• Kopanya AHP esale pele le dispersant le karolo e itseng ya DMF tlasa ho tjhesa ho hoholo (≥3000 rpm, metsotso e 30), ebe o kopanya le slurry ya TPU.
• Ho omisa kamora ho roala: 120-150°C, eketsa nako ka 10% ho netefatsa mouoane o felletseng oa DMF.

II. Tlhahlobo ea ho khoneha ha Zinc Borate (ZB)

1. Mokhoa le Melemo ea ho Sireletsa Mollo

• Mokhoa:
• E etsa lera la khalase la B₂O₃ mochesong o phahameng, e thibela oksijene le mocheso (ho lieha ha lelakabe la mokhahlelo o kobehileng).
• E lokolla metsi a tlamilweng (~13%), e qhibilihisa dikhase tse tukang le ho phodisa sistimi.
• Melemo:
• Tšusumetso e matla ea tšebelisano-'moho le AHP kapa aluminium trihydroxide (ATH).
• Ho thibela mosi hantle haholo, ho loketse lits'ebetso tse sa tsubeng haholo.

2. Liphephetso le Litharollo tsa Ts'ebeliso

3. Tlhahiso le Tsamaiso e Khothaletsoang

• Mohlala oa ho qapa:
• Motheo oa TPU/DMF: 100 phr
• ZB ea boholo bo bonyenyane: 8 phr
• AHP: 15 phr
• Moemeli oa ho kolobisa (Tego 750W): 1 phr
• Lintlha tsa Bohlokoa tsa Ts'ebetso:
• Hasanya ZB pele ho DMF ka ho sila difaha (boholo ba dikarolwana ≤2μm) pele o kopanya le slurry ya TPU.
• Eketsa nako ea ho omisa (mohlala, metsotso e 30) ho qoba mongobo o setseng o amang ho lieha ha mollo.

III. Tlhahlobo e kopanetsoeng ea Sistimi ea AHP + ZB

1. Litlamorao tse Sireletsang Mollo tse Kopanetsoeng

• Tšebelisano-'moho ea Mokhahlelo oa Khase le Mokhahlelo o Koahetsoeng:
• AHP e fana ka phosphorus bakeng sa ho tjhesa, ha ZB e tsitsisa lera la char mme e thibela kganya e latelang.
• LOI e kopantsoeng: 28-30%, UL94 V-0 (1.6mm) e ka fihlelleha.
• Ho Thibela Mosi:
• ZB e fokotsa ho ntšoa ha mosi ka >50% (Teko ea Khoune Calorimeter).

2. Litlhahiso tsa Tekanyo ea Ts'ebetso

• Puseletso ea Thepa ea Mechini:
• Kenya 2-3% TPU plasticizer (mohlala, polycaprolactone polyol) ho boloka ho tenyetseha (bolelele >300%).
• Sebelisa phofo e ntle haholo (AHP/ZB <2μm) ho fokotsa tahlehelo ea matla a ho thaepa.
• Taolo ea Botsitso ba Ts'ebetso:
• Boloka viscosity ea slurry ho 2000-4000 cP (Brookfield RV, spindle 4, 20 rpm) bakeng sa ho koahela ka mokhoa o ts'oanang.

IV. Papiso le Dithibela-mollo tsa Mokelikeli tse Thehiloeng ho Solvent

V. Mehato e Khothaletsoang ea ho Kenya Ts'ebetsong

1. Teko ea Sekala sa Lab:

• Lekola AHP/ZB ka bonngoe le ka kopanelo (ho kenya gradient: 10%, 15%, 20%).
• Lekola botsitso ba ho hasana (ha ho na ho senyeha ha metsi ka mor'a lihora tse 24), liphetoho tsa viscosity, le ho tšoana ha ho koahela.

1. Netefatso ea Sekala sa Pilot:

• Ntlafatsa maemo a ho omisa (nako/mocheso) mme o leke ho thibela lelakabe (UL94, LOI) le thepa ea mechini.
• Bapisa litšenyehelo: Haeba AHP+ZB e fokotsa litšenyehelo ka >30% ha e bapisoa le li-FR tse metsi, e ka atleha moruong.

1. Tokisetso ea ho Eketsa:

• Sebelisana le bafepedi ho ntshetsa pele di-masterbatches tsa AHP/ZB tse hasantsweng esale pele (tse thehilweng ho DMF) bakeng sa tlhahiso e nolofaditsweng.

VI. Qetello

Ka mekhoa e laoloang ea ho hasana, AHP le ZB li ka sebetsa e le li-retant tse sebetsang hantle tsa malakabe bakeng sa lipeipi tsa TPU/DMF, ha feela:

1. Phetoho ea bokaholimo + ho hasana ho phahamenge sebediswa ho thibela ho kopana ha dikarolwana.
2. AHP (e ka sehloohong) + ZB (synergist)ho leka-lekanya bokgoni le ditjeo.
3. Bakeng sapepeneneng/tenyetseho e phahamengHa ho hlokahala, di-FR tsa phosphorus-nitrogen tse metsi (mohlala, Levagard 4090N) di ntse di le molemo.

Sichuan Taifeng New Flame Retardant Co., Ltd. (ISO & REACH)

Email: lucy@taifeng-fr.com