Xov xwm

Kev Taw Qhia: Kev daws teeb meem ntawm High-Load ATH/MDH Flame-Retardant Polyolefin Compounds Processing Targets

Hauv kev lag luam cable, cov kev cai nruj rau kev tiv thaiv hluav taws yog qhov tseem ceeb kom ntseeg tau tias muaj kev nyab xeeb ntawm cov neeg ua haujlwm thiab cov khoom siv thaum muaj hluav taws. Aluminium hydroxide (ATH) thiab magnesium hydroxide (MDH), ua cov tshuaj tiv thaiv hluav taws uas tsis muaj halogen, yog siv dav hauv cov tshuaj polyolefin cable vim lawv zoo rau ib puag ncig, tso pa tawm tsawg, thiab tso pa roj tsis xeb. Txawm li cas los xij, kev ua tiav qhov kev ua tau zoo ntawm kev tiv thaiv hluav taws feem ntau yuav tsum muaj kev thauj khoom ntau ntawm ATH thiab MDH - feem ntau yog 50–70 wt% lossis siab dua - rau hauv polyolefin matrix.

Txawm hais tias cov khoom siv ntau ua rau muaj kev kub hnyiab ntau, nws kuj ua rau muaj teeb meem loj heev rau kev ua haujlwm, suav nrog kev ua kom cov dej yaj ntau ntxiv, kev ntws tsawg dua, cov khoom siv kho tshuab tsis zoo, thiab qhov tsis zoo ntawm qhov chaw. Cov teeb meem no tuaj yeem txwv tsis pub muaj kev ua haujlwm ntau lawm thiab qhov zoo ntawm cov khoom.

Tsab xov xwm no lub hom phiaj yog los tshuaj xyuas cov teeb meem ua tiav uas cuam tshuam nrog cov khoom siv hluav taws xob ATH / MDH uas muaj zog heev hauv cov ntawv thov cable. Raws li cov lus tawm tswv yim ntawm kev ua lag luam thiab kev paub dhau los, nwsqhia txog ua tau zookev ua haujlwmcov khoom ntxivraudaws cov teeb meem no. Cov kev nkag siab uas tau muab yog los pab cov chaw tsim khoom siv hlau thiab cable kom ua tiav cov qauv thiab txhim kho cov txheej txheem tsim khoom thaum ua haujlwm nrog cov tshuaj polyolefin ATH/MDH uas muaj zog heev.

Nkag Siab Txog ATH thiab MDH Cov Tshuaj Tiv Thaiv Hluav Taws

ATH thiab MDH yog ob hom tshuaj tua hluav taws uas tsis muaj halogen thiab tsis muaj inorganic uas siv dav hauv cov ntaub ntawv polymer, tshwj xeeb tshaj yog hauv cov ntawv thov cable uas muaj kev nyab xeeb thiab cov qauv ib puag ncig siab. Lawv ua haujlwm los ntawm kev rhuav tshem endothermic thiab tso dej tawm, ua rau cov pa roj uas kub hnyiab thiab tsim cov txheej oxide tiv thaiv ntawm qhov chaw ntawm cov khoom, uas tiv thaiv kev kub hnyiab thiab txo cov pa luam yeeb. ATH rhuav tshem ntawm kwv yees li 200–220 ° C, thaum MDH muaj qhov kub rhuav tshem siab dua ntawm 330–340 ° C, ua rau MDH tsim nyog dua rau cov polymers ua tiav ntawm qhov kub siab dua.

1. Cov txheej txheem tiv thaiv hluav taws ntawm ATH thiab MDH suav nrog:

1.1. Kev rhuav tshem los ntawm kev siv cua sov:

Thaum cua sov, ATH (Al(OH)₃) thiab MDH (Mg(OH)₂) yuav raug rhuav tshem los ntawm kev siv lub zog endothermic, nqus tau cua sov tseem ceeb thiab txo qhov kub ntawm cov polymer kom ncua qhov kev puas tsuaj ntawm cov cua sov.

ATH: 2Al(OH)₃ → Al₂O₃ + 3H₂O, ΔH≈ 1051 J/g

MDH: Mg(OH)₂ → MgO + H₂O, ΔH ≈ 1316 J/g

1.2. Kev tso pa dej tawm:

Cov pa dej uas tso tawm ua rau cov pa roj uas yooj yim hlawv nyob ib puag ncig cov polymer yaj thiab txwv tsis pub cov pa oxygen nkag mus, thiab txwv tsis pub hlawv.

1.3. Kev tsim cov txheej tiv thaiv:

Cov hlau oxides (Al₂O₃ thiab MgO) ua ke nrog cov polymer char txheej los tsim ib txheej tiv thaiv ntom ntom, uas thaiv cua sov thiab oxygen nkag mus thiab cuam tshuam kev tso tawm ntawm cov pa roj uas kub hnyiab tau.

1.4. Kev tswj pa luam yeeb:

Cov txheej tiv thaiv kuj nqus cov pa luam yeeb, txo cov pa luam yeeb tag nrho.

Txawm hais tias lawv muaj kev ua tau zoo heev ntawm kev tiv thaiv hluav taws thiab cov txiaj ntsig ib puag ncig, kev ua tiav cov qib tiv thaiv hluav taws siab feem ntau xav tau 50–70 wt% lossis ntau dua ntawm ATH/MDH, uas yog qhov ua rau muaj teeb meem ua tiav tom qab.
2. Cov Kev Sib Tw Tseem Ceeb ntawm Kev Ua Haujlwm ntawm High-Load ATH/MDH Polyolefins hauv Cable Applications

2.1. Cov khoom rheological tsis zoo:

Cov khoom ntim ntau dhau ua rau cov yaj viscosity nce ntxiv thiab txo qhov flowability. Qhov no ua rau plasticization thiab ntws thaum lub sijhawm extrusion nyuaj dua, xav tau qhov kub siab dua thiab lub zog shear, uas ua rau kev siv zog ntau dua thiab ua rau cov khoom siv hnav sai dua. Kev txo qis ntawm cov yaj ntws kuj txwv qhov ceev extrusion thiab kev ua haujlwm zoo.

2.2. Cov khoom siv kho tshuab txo qis:

Cov khoom siv inorganic ntau ntau ua rau cov polymer matrix tsis muaj zog, ua rau lub zog tensile, elongation thaum tawg, thiab lub zog cuam tshuam txo qis. Piv txwv li, kev suav nrog 50% lossis ntau dua ATH/MDH yuav txo lub zog tensile los ntawm kwv yees li 40% lossis ntau dua, ua rau muaj kev cov nyom rau cov ntaub ntawv cable uas yoog tau thiab ruaj khov.

2.3. Teeb meem kev tawg:

Cov khoom me me ATH thiab MDH feem ntau sib sau ua ke hauv cov polymer matrix, ua rau muaj cov ntsiab lus ntxhov siab, txo qis kev ua haujlwm ntawm lub tshuab, thiab cov teeb meem extrusion xws li qhov roughness ntawm qhov chaw lossis npuas.

2.4. Qhov chaw tsis zoo:

Qhov viscosity ntawm cov yaj ntau, kev sib kis tsis zoo, thiab kev sib haum xeeb ntawm cov khoom sib xyaw thiab cov polymer tsawg tuaj yeem ua rau cov nplaim extrudate ntxhib lossis tsis sib luag, ua rau "tshis tawv" lossis pwm sib sau ua ke. Kev sib sau ua ke ntawm lub pwm (lub pwm ntws) cuam tshuam rau ob qho tib si tsos thiab kev tsim khoom tas mus li.

2.5. Kev cuam tshuam ntawm cov khoom siv hluav taws xob:

Cov khoom sau ntau thiab kev sib kis tsis sib xws tuaj yeem cuam tshuam rau cov khoom dielectric, xws li qhov ntim resistivity. Ntxiv mus, ATH / MDH muaj kev nqus dej noo siab, uas tuaj yeem cuam tshuam rau kev ua haujlwm hluav taws xob thiab kev ruaj khov mus sij hawm ntev hauv cov chaw noo noo.

2.6. Lub qhov rais ua haujlwm nqaim:

Qhov kub ntawm kev ua cov polyolefins uas muaj zog tiv taus hluav taws kub yog nqaim heev. ATH pib lwj li ntawm 200°C, thaum MDH lwj li ntawm 330°C. Yuav tsum tswj qhov kub kom meej kom tiv thaiv kev lwj ua ntej lub sijhawm thiab xyuas kom meej tias cov khoom siv tsis ua rau hluav taws kub thiab ruaj khov.

Cov teeb meem no ua rau kev ua cov polyolefins ATH/MDH uas muaj cov khoom hnyav nyuaj thiab qhia txog qhov tsim nyog ntawm cov khoom siv pab ua kom zoo.

Yog li ntawd, txhawm rau daws cov teeb meem no, ntau yam khoom siv ua haujlwm tau tsim thiab siv rau hauv kev lag luam cable. Cov khoom siv no txhim kho kev sib raug zoo ntawm cov polymer-filler, txo cov viscosity ntawm yaj, thiab txhim kho kev sib kis ntawm cov filler, ua kom zoo dua ob qho tib si kev ua haujlwm thiab cov khoom siv kho tshuab kawg.

Cov khoom siv ua haujlwm twg zoo tshaj plaws rau kev daws teeb meem kev ua haujlwm thiab qhov zoo ntawm cov nplaim hluav taws kub ATH/MDH polyolefin sib xyaw hauv kev siv cable hauv kev lag luam cable?

Cov khoom siv ntxiv thiab cov khoom siv pab tsim khoom raws li silicone:

SILIKE muaj ntau yam kev xaivcov khoom siv ua cov khoom siv polysiloxanerau ob qho tib si thermoplastics thiab engineering plastics, pab txhim kho kev ua tiav thiab txhim kho kev ua tau zoo ntawm cov khoom tiav. Peb cov kev daws teeb meem ntau yam los ntawm cov silicone masterbatch ntseeg siab LYSI-401 mus rau cov khoom siv SC920 tshiab - tsim los xa cov txiaj ntsig zoo dua thiab kev ntseeg siab hauv kev thauj khoom siab, halogen-free LSZH thiab HFFR LSZH cable extrusion.

Tshwj xeeb,SILIKE UHMW silicone-based lubricant processing additivestau ua pov thawj tias muaj txiaj ntsig zoo rau ATH/MDH cov tshuaj polyolefin uas tiv taus hluav taws hauv cov cables. Cov teebmeem tseem ceeb suav nrog:

1. Txo qhov viscosity ntawm cov yaj: Cov Polysiloxanes txav mus rau qhov chaw yaj thaum lub sijhawm ua haujlwm, tsim cov zaj duab xis lubricating uas txo qhov kev sib txhuam nrog cov khoom siv thiab txhim kho kev ntws.

2. Kev sib kis zoo dua: Cov tshuaj ntxiv uas muaj silicon txhawb kev faib tawm ntawm ATH/MDH hauv cov polymer matrix, txo cov khoom sib sau ua ke.

3. Zoo dua qhov zoo ntawm qhov chaw:LYSI-401 silicone masterbatchtxo cov pwm tsim thiab yaj tawg, ua rau cov extrudate du dua nrog tsawg qhov tsis zoo.

4. Kev ceev ntawm kab ceev:Cov Khoom Siv Ua Silicone SC920Nws yog qhov tsim nyog rau kev rho tawm cov xov hlau sai. Nws tuaj yeem tiv thaiv kev tsis ruaj khov ntawm txoj kab uas hla ntawm cov xov hlau thiab kev poob ntawm cov ntsia hlau, thiab txhim kho kev ua haujlwm ntau lawm. Thaum siv hluav taws xob tib yam, qhov ntim rho tawm tau nce 10%.

5. Cov khoom siv kho tshuab zoo dua: Los ntawm kev txhim kho cov khoom sib xyaw thiab kev sib txuas ntawm cov khoom sib xyaw, silicone masterbatch txhim kho kev tiv thaiv kev hnav thiab kev ua haujlwm kho tshuab, xws li cov khoom cuam tshuam & elongation thaum tawg.

6. Kev sib xyaw ua ke ntawm cov nplaim taws thiab kev tswj pa luam yeeb: cov tshuaj ntxiv siloxane tuaj yeem ua kom zoo dua me ntsis ntawm kev ua haujlwm ntawm cov nplaim taws (piv txwv li, nce LOI) thiab txo cov pa luam yeeb.

SILIKE yog lub tuam txhab tsim cov khoom siv silicone, cov khoom siv pab ua, thiab cov thermoplastic silicone elastomers hauv thaj av Asia-Pacific.

Peb liCov khoom siv ua siliconetau siv dav hauv cov thermoplastics thiab cable industries los ua kom zoo dua qub, txhim kho kev sib kis ntawm cov khoom sau, txo cov viscosity yaj, thiab xa cov nplaim du dua nrog kev ua haujlwm zoo dua.

Ntawm lawv, cov silicone masterbatch LYSI-401 thiab cov khoom siv silicone SC920 tshiab yog cov kev daws teeb meem rau ATH / MDH nplaim taws-retardant polyolefin formulations, tshwj xeeb tshaj yog hauv LSZH thiab HFFR cable extrusion. Los ntawm kev koom ua ke SILIKE cov khoom siv silicone thiab cov khoom siv tsim khoom, cov chaw tsim khoom tuaj yeem ua tiav kev tsim khoom ruaj khov thiab zoo sib xws.

If you are looking for silicone processing aids for ATH/MDH compounds, polysiloxane additives for flame-retardant polyolefins, silicone masterbatch for LSZH / HFFR cables, improve dispersion in ATH/MDH cable compounds, reduce melt viscosity flame-retardant polyolefin extrusion, cable extrusion processing additives, silicone-based extrusion aids for wires and cables, please visit www.siliketech.com or contact us at amy.wang@silike.cn to learn more.