PBT Cov Tshuaj Tiv Thaiv Hluav Taws Xob Uas Tsis Muaj Halogen

PBT Cov Tshuaj Tiv Thaiv Hluav Taws Xob Uas Tsis Muaj Halogen

Yuav kom tsim tau ib lub tshuab hluav taws xob uas tsis muaj halogen (FR) rau PBT, nws yog ib qho tseem ceeb kom sib npaug qhov ua tau zoo ntawm kev tiv thaiv hluav taws, kev ruaj khov ntawm thermal, kev sib raug zoo ntawm qhov kub thiab txias, thiab cov khoom siv kho tshuab.

I. Cov Khoom Siv Hluav Taws Kub Tseem Ceeb

1. Aluminium Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate

Lub Tshuab:

• Aluminium Hypophosphite (Thermal stability > 300°C): Txhawb kev tsim cov char hauv theem condensed thiab tso tawm PO· radicals hauv theem roj los cuam tshuam cov tshuaj combustion chain reactions.
• MCA (Qhov kub ntawm kev lwj ~300°C): Kev lwj ntawm cov khoom siv hluav taws xob (endothermic decomposition) tso tawm cov pa roj inert (NH₃, H₂O), ua rau cov pa roj uas yooj yim hlawv thiab tiv thaiv cov dej yaj uas yaj tawm.
• Zinc Borate (Qhov kub ntawm kev lwj > 300°C): Ua kom cov pa roj av zoo li iav zoo nkauj dua, txo cov pa luam yeeb thiab cov teeb ci ntsa iab.

Qhov Piv Txwv Pom Zoo:
Aluminium Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide uas hloov kho qhov chaw + Aluminium Hypophosphite + Organic Phosphonate (piv txwv li, ADP)

Lub Tshuab:

• Magnesium Hydroxide Hloov Kho (Qhov kub ntawm kev lwj ~300°C): Kev kho qhov chaw (silane/titanate) txhim kho kev sib kis thiab kev ruaj khov ntawm thermal thaum nqus cua sov kom qis dua qhov kub ntawm cov khoom.
• Organic Phosphonate (piv txwv li, ADP, Thermal stability > 300°C): Cov tshuaj tua hluav taws zoo heev, ua haujlwm nrog cov kab ke phosphorus-nitrogen.

Qhov Piv Txwv Pom Zoo:
Magnesium Hydroxide (15-20%) + Aluminium Hypophosphite (8-12%) + ADP (5-8%).

II. Cov Neeg Sib Koom Tes Xaiv Tau

• Nano Clay/Talc (2-3%): Txhim kho qhov zoo ntawm cov char thiab cov khoom siv kho tshuab thaum txo cov tshuaj FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Tus neeg sawv cev tiv thaiv kom tsis txhob ntws los tiv thaiv cov tee dej kub hnyiab.
• Hmoov Silicone (2-4%): Txhawb kom muaj cov char ntom ntom, ua kom cov nplaim taws tsis kub hnyiab thiab ua kom qhov chaw ci ntsa iab.

III. Kev Sib Xyaws Uas Yuav Tsum Tsis Txhob Ua

• Aluminium Hydroxide: Yuav lwj thaum kub txog 180-200°C (qis dua qhov kub ua PBT ntawm 220-250°C), ua rau lwj ua ntej lub sijhawm.
• Magnesium Hydroxide Tsis Hloov Kho: Yuav tsum tau kho qhov chaw kom tiv thaiv kev sib sau ua ke thiab kev puas tsuaj los ntawm cua sov thaum lub sijhawm ua haujlwm.

IV. Cov Lus Qhia Txog Kev Txhim Kho Kev Ua Haujlwm

1. Kev Kho Mob Nto: Siv cov neeg sawv cev silane coupling rau ntawm magnesium hydroxide thiab zinc borate los txhim kho kev sib kis thiab kev sib txuas ntawm cov interfacial.
2. Kev Tswj Kub Thaum Ua Khoom Noj: Xyuas kom qhov kub ntawm FR lwj > 250°C kom tsis txhob lwj thaum ua khoom noj.
3. Kev Sib Npaug ntawm Cov Khoom Siv Kho Tshuab: Siv cov nano-fillers (piv txwv li, SiO₂) lossis cov khoom ua kom tawv (piv txwv li, POE-g-MAH) los them rau qhov poob zog.

V. Piv txwv ntawm cov qauv tshuaj

VI. Cov Qauv Ntsuas Tseem Ceeb

• Hluav Taws Kub Tiv Thaiv: UL94 V-0 (1.6mm), LOI > 35%.
• Kev Ruaj Ntseg Thermal: TGA residue > 25% (600 ° C).
• Cov Khoom Siv Kho Tshuab: Lub zog Tensile > 45 MPa, qhov cuam tshuam notched > 4 kJ / m².

Los ntawm kev ua kom zoo dua cov piv, lub kaw lus tiv thaiv hluav taws kub tsis muaj halogen zoo tuaj yeem ua tiav thaum tswj hwm PBT qhov kev ua tau zoo tag nrho.

More info., pls contact lucy@taifeng-fr.com