Cov Khoom Siv Hluav Taws Xob Aluminium Hypophosphite thiab MCA rau EVA Heat-Shrink Tubing

Cov Khoom Siv Hluav Taws Xob Aluminium Hypophosphite thiab MCA rau EVA Heat-Shrink Tubing

Thaum siv txhuas hypophosphite, MCA (melamine cyanurate), thiab magnesium hydroxide ua cov tshuaj tiv thaiv hluav taws hauv EVA cov yeeb nkab cua sov, cov koob tshuaj pom zoo thiab cov lus qhia ua kom zoo dua yog raws li nram no:

1. Cov Tshuaj Uas Pom Zoo Rau Cov Tshuaj Nplaim

Aluminium Hypophosphite

• Kev Siv Tshuaj:5%–10%
• Kev Ua Haujlwm:Tshuaj tiv thaiv hluav taws kub zoo heev, txhawb kev tsim cov char, thiab txo qhov kub tso tawm.
• Lus Cim:Cov nyiaj ntau dhau yuav ua rau cov khoom siv tsis yooj yim; cov neeg sawv cev synergistic yuav tsum tau koom ua ke rau kev ua kom zoo dua.

MCA (Melamine Cyanurate)

• Kev Siv Tshuaj:10%–15%
• Kev Ua Haujlwm:Cov roj-theem hluav taws kub, nqus cua sov thiab tso tawm cov pa roj inert (piv txwv li, NH₃), sib koom ua ke nrog txhuas hypophosphite los txhim kho kev tiv thaiv hluav taws.
• Lus Cim:Kev thauj khoom ntau dhau yuav ua rau muaj kev hloov pauv; yuav tsum tau ua kom ntseeg tau tias muaj kev sib haum xeeb nrog EVA.

Magnesium Hydroxide (Mg(OH)₂)

• Kev Siv Tshuaj:20%–30%
• Kev Ua Haujlwm:Kev rhuav tshem endothermic tso tawm cov pa dej, ua rau cov pa roj uas yooj yim hlawv thiab txo cov pa luam yeeb.
• Lus Cim:Kev thauj khoom ntau dhau yuav ua rau cov khoom siv kho tshuab txo qis; kev hloov kho qhov chaw raug pom zoo kom txhim kho kev sib kis.

2. Cov Lus Qhia Txog Kev Txhim Kho Cov Qauv

• Tag Nrho Cov Hluav Taws Kub Tiv Thaiv:Yuav tsum tsis pub tshaj 50% kom sib npaug ntawm qhov hluav taws kub thiab kev ua haujlwm tau zoo (piv txwv li, kev ywj pheej, qhov nrawm ntawm kev ntsws).
• Cov teebmeem synergistic:
• Aluminium hypophosphite thiab MCA tuaj yeem txo cov koob tshuaj ib leeg (piv txwv li, 8% aluminium hypophosphite + 12% MCA).
• Magnesium hydroxide ua kom tiav qhov hluav taws kub los ntawm cov teebmeem endothermic thaum txo cov pa luam yeeb.
• Kev Kho Mob Nto:Cov neeg sawv cev silane coupling tuaj yeem txhim kho kev sib kis thiab kev sib txuas ntawm magnesium hydroxide.
• Cov Khoom Ntxiv Ntxiv:
• Ntxiv 2%–5% cov tshuaj uas ua rau cov char (piv txwv li, pentaerythritol) los txhim kho kev ruaj khov ntawm cov txheej char.
• Siv cov tshuaj plasticizers me me (piv txwv li, roj taum pauv epoxidized) los them rau qhov poob ntawm kev ywj pheej.

3. Cov Lus Qhia Txog Kev Txheeb Xyuas Kev Ua Tau Zoo

• Kev Ntsuas Hluav Taws Kub:
• UL94 kev sim hlawv ntsug (lub hom phiaj: V-0).
• Cov Pa oxygen Txwv (LOI >28%).
• Cov Khoom Siv Kho Tshuab:
• Soj ntsuam lub zog tensile thiab elongation thaum tawg kom paub tseeb tias qhov yooj ywm ua tau raws li qhov xav tau ntawm daim ntawv thov.
• Kev Ua Tau:
• Saib xyuas Melt Flow Index (MFI) kom tsis txhob muaj teeb meem ua tiav vim muaj cov khoom ntim ntau dhau.

4. Kev Xav Txog Tus Nqi thiab Ib puag ncig

• Tus nqi seem:Aluminium hypophosphite kim heev; nws cov koob tshuaj tuaj yeem txo qis (ntxiv nrog MCA) kom tswj tau tus nqi.
• Kev phooj ywg ib puag ncig:Magnesium hydroxide tsis muaj tshuaj lom thiab tsis ua rau pa luam yeeb, ua rau nws tsim nyog rau kev siv rau ib puag ncig.

Piv txwv cov qauv (rau kev siv xwb):

• Txhuas Hyphosphite: 8%
• MCA: 12%
• Magnesium Hydroxide: 25%
• EVA Matrix: 50%
• Lwm Cov Khoom Siv Ntxiv (cov neeg sawv cev txuas, cov khoom yas, thiab lwm yam): 5%