Kev daws teeb meem rau txo TPU zaj duab xis haus luam yeeb ntom

Kev daws teeb meem rau txo TPU zaj duab xis Smoke Density (Tam sim no: 280; Lub Hom Phiaj: <200)
(Cov qauv tam sim no: Aluminium hypophosphite 15 phr, MCA 5 phr, Zinc borate 2 phr)

I. Core Issue Analysis

1. Cov kev txwv ntawm cov qauv tam sim no:

• Aluminium hypophosphite: Feem ntau txwv cov nplaim taws sib kis tab sis muaj kev txwv cov pa luam yeeb.
• MCA: Roj-theem nplaim hluav taws retardant siv tau rau afterglow (twb tau lub hom phiaj) tab sis tsis txaus rau combustion pa luam yeeb txo.
• Zinc borate: Txhawb char tsim tab sis yog underdosed (tsuas yog 2 phr), tsis tsim ib tug ntom txaus char txheej los suppress pa luam yeeb.

1. Qhov Tseem Ceeb:

• Txo combustion pa luam yeeb ntom ntawmchar-enhanced pa luam yeeblos yoggas-phase dilution mechanisms.

II. Optimization Strategies

1. Kho cov qauv uas twb muaj lawm

• Aluminium hypophosphite: Nce rau18–20 dr hab(txhim kho condensed-theem nplaim retardancy; saib xyuas yooj).
• MCA: Nce rau6–8 dr hab(boosts gas-phase kev txiav txim; ntau npaum li cas yuav degrade ua).
• Zinc borate: Nce rau3–4 dr hab(strengthes char tsim).

Piv txwv Adjusted Formulation:

• Aluminium hypophosphite: 18 phr
• MCA: 7 phr
• Zinc borate: 4 phr

2. Qhia cov pa luam yeeb ua haujlwm siab

• Molybdenum compounds(piv txwv li, zinc molybdate lossis ammonium molybdate):
• Lub luag haujlwm: Catalyzes char formation, tsim kom muaj qhov thaiv kom tsis txhob muaj pa taws.
• Kev noj tshuaj: 2-3 phr (synergizes nrog zinc borate).
• Nanoclay (montmorillonite):
• Lub luag haujlwm: Lub cev tiv thaiv kom txo tau cov pa taws tso tawm.
• Kev noj tshuaj: 3-5 phr (nto-hloov rau dispersion).
• Silicone-based nplaim retardants:
• Lub luag haujlwm: Txhim kho char zoo thiab kev haus luam yeeb.
• Kev noj tshuaj: 1-2 phr (tsis txhob pom qhov tsis pom tseeb).

3. Synergistic System Optimization

• Zinc borate: Ntxiv 1-2 phr rau synergize nrog aluminium hypophosphite thiab zinc borate.
• Ammonium polyphosphate (APP): Ntxiv 1–2 phr los txhim kho roj-theem kev ua haujlwm nrog MCA.

III. Pom zoo daim ntawv qhia

Cov txiaj ntsig xav tau:

• combustion pa luam yeeb ntom ntom: ≤200 (ntawm char + gas-phase synergy).
• Afterglow pa luam yeeb ntom ntom: Khaws ≤200 (MCA + zinc borate).

IV. Cov txheej txheem tseem ceeb Optimization Notes

1. Ua Haujlwm Kub: Khaws 180-200 ° C kom tiv thaiv cov nplaim hluav taws kub ntxov ntxov.
2. Dispersion:

• Siv high-speed mixing (≥ 2000 rpm) rau kev faib nanoclay / molybdate.
• Ntxiv 0.5–1 phr silane coupling tus neeg sawv cev (piv txwv li, KH550) txhawm rau txhim kho cov khoom sib xyaw ua ke.

1. Zaj duab xis tsim: Rau casting, txo tus nqi cua txias kom yooj yim char txheej tsim.

V. Cov kauj ruam uas siv tau

1. Lab Kev Xeem: Npaj cov qauv raws li kev pom zoo; Ua UL94 ntsug hlawv thiab cov pa luam yeeb ntom ntom (ASTM E662).
2. Performance Balance: Ntsuas lub zog tensile, elongation, thiab pob tshab.
3. Kev ua kom zoo dua qub: Yog tias muaj pa hluav taws xob tsis zoo yog qhov siab, nce ntxiv molybdate lossis nanoclay (± 1 phr).

VI. Nqi & Feasibility

• Tus nqi cuam tshuam: Zinc molybdate (~ ¥ 50 / kg) + nanoclay (~ ¥ 30 / kg) nce nqi tag nrho los ntawm <15% ntawm ≤10% loading.
• Muaj Scalability: Tau tshaj tus qauv TPU ua; tsis muaj cov cuab yeej tshwj xeeb xav tau.

VII. Xaus

Los ntawmnce zinc borate + ntxiv molybdate + nanoclay, triple-action system (char tsim + roj dilution + lub cev barrier) tuaj yeem ua tiav lub hom phiaj combustion pa luam yeeb ntom ntom (≤200). Ua ntej ntsuas qhov ntsuasmolybdate + nanoclaykev sib xyaw ua ke, tom qab ntawd ua kom zoo sib piv rau cov nqi-kev ua tau zoo.