Uburyo bwo gusiga umuriro udafite halogen kuri sisitemu yo gusiga TPU hakoreshejwe DMF Solvent

Uburyo bwo gusiga umuriro udafite halogen kuri sisitemu yo gusiga TPU hakoreshejwe DMF Solvent

Ku bijyanye na sisitemu zo gusiga TPU zikoresha Dimethyl Formamide (DMF) nk'umusemburo, ikoreshwa rya aluminium hypophosphite (AHP) na zinc borate (ZB) nk'ibintu bigabanya umuriro bisaba isuzuma ryakozwe neza. Hasi hari isesengura rirambuye na gahunda yo gushyira mu bikorwa:

I. Isesengura ry'ubushobozi bwa Aluminium Hypophosphite (AHP)

1. Uburyo bwo gukumira umuriro n'ibyiza byawo

• Uburyo:
• Ibora ku bushyuhe bwinshi kugira ngo ikore aside fosforike na metaforike, bigatuma habaho ihinduka rya char muri TPU (condensed-phase flame retardncy).
• Irekura PO· radicals kugira ngo ihagarike ibikorwa byo gutwika (gas-phase fire retardancy).
• Ibyiza:
• Nta halogen irimo, nta mwotsi mwinshi, nta burozi bwinshi, ikurikiza RoHS / REACH.
• Ubushyuhe buhamye neza (ubushyuhe bwo kubora ≈300°C), bukwiriye uburyo bwo kumisha TPU (ubusanzwe <150°C).

2. Ibibazo n'ibisubizo ku ishyirwa mu bikorwa

3. Uburyo n'uburyo byateguwe neza

• Urugero rw'ikoreshwa ry'ibiyobyabwenge:
• Ishingiro rya TPU/DMF: 100 phr
• AHP yahinduwe ku buso: 20 phr
• Zinc borate (ZB): 5 phr (ubufatanye bwo gukumira umwotsi)
• Isambaza (BYK-110): 1.5 phr
• Ingingo z'ingenzi z'Inzira:
• Vanga mbere na mbere AHP hamwe na dispersant na DMF igice munsi y'umuvuduko mwinshi (≥3000 rpm, iminota 30), hanyuma uvange na TPU slurry.
• Kumisha nyuma yo gusiga: 120-150°C, kongera igihe ho 10% kugira ngo habeho ihumana ryuzuye rya DMF.

II. Isesengura ry'ubushobozi bwa Zinc Borate (ZB)

1. Uburyo bwo gukumira umuriro n'ibyiza byawo

• Uburyo:
• Ikora urwego rw'ikirahure cya B₂O₃ ku bushyuhe bwinshi, ikabuza ogisijeni n'ubushyuhe (igabanuka ry'umuriro mu gihe cy'izuba).
• Irekura amazi ahambiriye (~13%), igagabanya imyuka igurumana kandi igakonjesha sisitemu.
• Ibyiza:
• Ingaruka zikomeye zo guhuza ibikorwa hamwe na AHP cyangwa aluminium trihydroxide (ATH).
• Kugabanya umwotsi neza, ni byiza cyane mu gukoresha umwotsi muke.

2. Ibibazo n'ibisubizo ku ishyirwa mu bikorwa

3. Uburyo n'uburyo byateguwe neza

• Urugero rw'ikoreshwa ry'ibiyobyabwenge:
• Ishingiro rya TPU/DMF: 100 phr
• Ingano ya Nano ZB: 8 phr
• AHP: iminota 15
• Umukozi wohanagura (Tego 750W): interuro 1
• Ingingo z'ingenzi z'Inzira:
• Shyira ZB muri DMF mbere yo kuyisya hakoreshejwe uburyo bwo kuyisya (ingano y'uduce ≤2μm) mbere yo kuyivanga na TPU slurry.
• Ongera igihe cyo kumisha (urugero, iminota 30) kugira ngo wirinde ubushuhe busigaye bugira ingaruka ku gutinda k'umuriro.

III. Isuzumabumenyi rusange rya Sisitemu ya AHP + ZB

1. Ingaruka zituma umuriro uhindagurika

• Ihuriro ry’ingufu n’ingufu zivanze:
• AHP itanga fosifore yo gutwika, mu gihe ZB ikomeza urwego rwa char kandi ikagabanya urumuri rw'inyuma.
• LOI ihuriweho: 28-30%, UL94 V-0 (1.6mm) irashoboka.
• Kugabanya umwotsi:
• ZB igabanya imyuka y'umwotsi ku kigero cya >50% (Ikizamini cya Cone Calorimeter).

2. Inama ku bijyanye no kuringaniza imikorere

• Indishyi ku mutungo wa tekiniki:
• Ongeraho 2-3% bya TPU plasticizer (urugero, polycaprolactone polyol) kugira ngo ukomeze kugorama (uburebure >300%).
• Koresha ifu nziza cyane (AHP/ZB <2μm) kugira ngo ugabanye gutakaza imbaraga zo gukurura.
• Kugenzura Iterambere ry'Imikorere:
• Gumana ubushyuhe bw'urutare kuri 2000-4000 cP (Brookfield RV, spindle 4, 20 rpm) kugira ngo upfuke neza.

IV. Kugereranya n'ibibuza umuriro w'amazi bishingiye ku gushonga

V. Intambwe zisabwa zo gushyira mu bikorwa

1. Isuzuma rya laboratwari:

• Suzuma AHP/ZB ukwayo kandi mu buryo buhuriweho (umubyigano w'umubare: 10%, 15%, 20%).
• Suzuma uburyo amazi akwirakwira mu kirere (nta gushonga nyuma y'amasaha 24), impinduka mu buryo bw'ubushyuhe, n'uburyo igitambaro gikwirakwira.

1. Kwemeza Igipimo cy'Umupilote:

• Kunoza imiterere y'umucanga (igihe/ubushyuhe) no gupima ubushyuhe bw'umuriro (UL94, LOI) n'imiterere ya mekanike.
• Gereranya ibiciro: Niba AHP+ZB igabanya ibiciro ho >30% ugereranije na liquid FRs, bizagira akamaro mu bukungu.

1. Imyiteguro yo kongera ubushobozi:

• Fatanya n'abatanga serivisi kugira ngo uteze imbere AHP/ZB masterbatches zamaze gutatanywa (zishingiye kuri DMF) kugira ngo worohereze umusaruro.

VI. Umwanzuro

Hamwe n'uburyo bwo gukwirakwiza ibintu bugenzurwa, AHP na ZB bishobora gukora nk'ibintu bigabanya umuriro neza ku irangi rya TPU/DMF, iyo:

1. Guhindura ubuso + gukwirakwiza ahantu haniniikoreshwa mu gukumira kwivanga kw'udukoko.
2. AHP (iy'ibanze) + ZB (synergist)bipima imikorere myiza n'ikiguzi.
3. Kuriubwisanzure/ubuhanga bwinshiibisabwa, fosifore-azote FR z'amazi (urugero, Levagard 4090N) ziracyari nziza.

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

Email: lucy@taifeng-fr.com