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Nplaim retardant Aluminium Hypophosphite thiab MCA rau EVA Kub-Shrink Tubing

Thaum siv aluminium hypophosphite, MCA (melamine cyanurate), thiab magnesium hydroxide raws li nplaim hluav taws hauv EVA tshav kub-shrink tubing, qhov pom zoo ntau npaum li cas thiab cov lus qhia ua kom zoo yog raws li hauv qab no:

1. Pom zoo noj cov nplaim hluav taws

Aluminium Hypophosphite

Noj ntau npaum:5% -10%
Muaj nuj nqi:Cov nplaim hluav taws muaj txiaj ntsig zoo heev, txhawb kev tsim char, thiab txo cov cua sov tso tawm.
Nco tseg:Cov nyiaj ntau dhau tuaj yeem ua rau cov khoom hloov pauv; synergistic tus neeg sawv cev yuav tsum tau muab tso ua ke rau optimization.

MCA (Melamine Cyanurate)

Noj ntau npaum:10% -15%
Muaj nuj nqi:Gas-theem nplaim hluav taws retardant, absorbs tshav kub thiab tso tawm inert gases (xws li, NH₃), synergizing nrog txhuas hypophosphite los txhim kho nplaim retardancy.
Nco tseg:Kev thauj khoom ntau dhau tuaj yeem ua rau kev tsiv teb tsaws chaw; Compatibility nrog EVA yuav tsum tau ua kom ntseeg tau.

Magnesium Hydroxide (Mg (OH) ₂)

Noj ntau npaum:20% -30%
Muaj nuj nqi:Endothermic decomposition tso dej vapor, diluting flammable gases thiab suppressing pa luam yeeb.
Nco tseg:Kev thauj khoom siab tuaj yeem txo cov khoom siv tshuab; Kev hloov kho saum npoo yog pom zoo los txhim kho kev tawg.

2. Formulation Optimization Recommendations

Total Flame Retardant System:Yuav tsum tsis pub tshaj 50% kom sib npaug ntawm cov nplaim hluav taws xob thiab kev ua haujlwm (piv txwv li, yooj, shrinkage tus nqi).
Synergistic Effects:
Aluminium hypophosphite thiab MCA tuaj yeem txo tus neeg noj ntau npaum li cas (piv txwv li, 8% aluminium hypophosphite + 12% MCA).
Magnesium hydroxide ntxiv cov nplaim hluav taws kub hnyiab los ntawm cov teebmeem endothermic thaum txo cov pa luam yeeb.
Kev kho deg:Silane coupling cov neeg ua haujlwm tuaj yeem txhim kho qhov sib txawv thiab kev sib txuas ntawm magnesium hydroxide.
Ntxiv Additives:
Ntxiv 2% -5% char-forming agents (piv txwv li, pentaerythritol) los txhim kho char txheej stability.
Siv cov yas me me (piv txwv li, epoxidized soybean roj) kom them nyiaj rau qhov poob.

3. Cov lus qhia kev ua tau zoo

Nplaim Retardancy Testing:
UL94 ntsug hluav taws kub ntsuas (lub hom phiaj: V-0).
Kev txwv Oxygen Index (LOI> 28%).
Mechanical Properties:
Ntsuam xyuas lub zog tensile thiab elongation ntawm kev so kom ntseeg tau tias kev hloov pauv tau raws li qhov xav tau ntawm daim ntawv thov.
Processability:
Saib xyuas Melt Flow Index (MFI) kom tsis txhob muaj teeb meem kev ua haujlwm vim muaj cov khoom siv ntau dhau.

4. Kev txiav txim siab txog nqi thiab ib puag ncig

Tus nqi sib npaug:Aluminium hypophosphite kuj tseem kim; nws qhov ntau npaum li cas tuaj yeem raug txo qis (ntxiv nrog MCA) los tswj cov nqi.
Environmental Friendliness:Magnesium hydroxide yog non-toxic thiab pa luam yeeb-suppressing, ua rau nws haum rau eco-friendly daim ntaub ntawv.

Piv txwv Formulation (rau kev siv nkaus xwb):