Yog -hexagonal magnesium hydroxideyog dav suav hais tias yog ib qho kev nyab xeeb tshaj plaws halogen- cov nplaim hluav taws tsis muaj hluav taws xob muaj rau cov ntawv thov yas. Nws cov tshuaj formula, Mg(OH)₂, nqa ib lub qhov dej -cov ntaub ntawv uas tsis muaj toxicity profile, thiab nws tsis muaj corrosive los yog teeb meem gases thaum lub sij hawm thermal decomposition. Synthetically tsim los ntawm kev tswj los nag lossis daus los ntawm brine, hexagonal magnesium hydroxide xa cov khoom siv lead ua lattice, cov tshuaj purity siab, thiab kev kwv yees endothermic cwj pwm - tag nrho cov uas txhais ua cov nplaim hluav taws kub hnyiab yam tsis muaj kev cuam tshuam rau kev ncaj ncees ntawm tus tswv tsev polymer matrix.
Nkag siab txog Hexagonal Magnesium Hydroxide thiab Nws Cov Khoom
Crystal Structure thiab Core Chemistry
Hexagonal magnesium hydroxide muaj cov txheej txheem siv lead ua zoo li brucite. Cov magnesium ions tau teem rau hauv ib qho qauv octahedral ntawm ob txheej hydroxyl. Cov duab no ua rau cov qauv zoo ib yam, uas ncaj qha txhawb nqa nqaim particle loj faib, zoo dispersion nyob rau hauv cov ntaub ntawv polymer, thiab ruaj khov thermal cwj pwm. Tsis zoo li amorphous magnesium hydroxide uas yog milled los ntawm brucite pob zeb, lub hexagonal version uas yog chemically tsim muaj Mg (OH) ₂ purity theem uas siab tshaj 99%, nrog nruj tswj impurities uas ua rau stability ntawm batch rau batch ntau yooj yim mus cuag.
Nplaim Retardant Mechanism thiab Thermal Stability
Endothermic kev puas tsuaj ua rau cov nplaim hluav taws retardant no. Thaum kub tshaj 340 degree, cov khoom tso tawm cov dej vapor. Qhov no txo qhov kub nyob ib ncig ntawm qhov hluav taws kub thiab ua rau cov nplaim hluav taws xob tsawg dua. Qhov seem ntawm magnesium oxide pov tseg tsim ib txheej char ntawm lub polymer nto, thaiv cov pa. Aluminium trihydrate (ATH) tawg nyob ib ncig ntawm 200℃thiab tsis tuaj yeem ua cov yas yas xws li PP, PA, lossis ABS ntawm qhov kub thiab txias dua li ob- ntu txheej txheem.
Kev nyab xeeb thiab ib puag ncig Profile
Hauv ntiaj teb kev lag luam, Mg(OH)₂ tsis suav tias yog qhov txaus ntshai los ntawm ntau txoj cai, xws li REACH thiab RoHS cov lus qhia. Nws tsis ua rau cov dioxins, furans, lossis halogenated combustion byproducts, uas yog qhov zoo dua qub halogenated nplaim retardants. Qhov tseeb tias nws tsis yaj yooj yim hauv dej ua rau ntuj txav txawm tias tsis tshua muaj. Yog hais tias koj ua hauj lwm raws li ib tug buyer nyob rau hauv lub qis - pa taws halogen- dawb cable manufacturing los yog composite panel manufacturing industries, qhov kev ua raws li ib puag ncig tsis yog ib qho teeb meem thib ob; nws yog ib qho kev xav tau yooj yim.
Hexagonal Magnesium Hydroxide vs Lwm Nplaim Retardants: Kev Ua Haujlwm thiab Kev Sib Piv Kev Nyab Xeeb
Lub amorphous magnesium hydroxide uas yog los ntawm milled brucite ore feem ntau muaj ntau dua ntawm impurities, tshwj xeeb tshaj yog CaO thiab Fe, thiab nws cov particle loj tau nthuav tawm ntau dua. Cov yam ntxwv no tuaj yeem hloov pauv cov nplaim hluav taws xob zoo li cas, uas tuaj yeem ua mob rau cov khoom siv ntawm cov khoom siv yas tiav. Thaum magnesium hydroxide yog tsim los ntawm brine, nws tsimhexagonal magnesium hydroxidecov nplooj ntawv uas tsis nyob ntawm cov ore txhua. Cov khoom kawg muaj thaj chaw tshwj xeeb ntawm 4-6 m² / g, uas tso cai rau kev sib cuag zoo nrog cov saw hlau polymer tsis nqus dej ntau dhau thaum khaws cia.
Nws yooj yim pom qhov kev ua tau zoo hierarchy thaum koj piv cov nplaim hluav taws los ntawm ntau pawg. Ua ntej txiav txim siab yuav khoom, koj yuav tsum saib cov kev sib txawv tseem ceeb no:
Hexagonal Mg(OH)₂ vs. ATH: Thermal decomposition onset at ~340℃vs ~200℃for ATH - enabling compatibility with more -temperature engineering plastic processing without premature decomposition.
Hexagonal Mg(OH)₂ vs. Magnesium Oxide: MgO tsis tso dej vapor thiab tsis muaj lub tshuab cua txias endothermic, ua rau nws cov nplaim hluav taws tsis zoo txawm hais tias nws cov thermal stability.
Hexagonal Mg(OH)₂ vs. Basic Magnesium Carbonate: Cov carbonate variant tso CO₂ es tsis yog dej vapor, uas tuaj yeem ua rau foaming tsis xws luag hauv cov qauv yas tuab.
Ntawm qhov loj me, qhov sib txawv no tseem ceeb. Yog tias koj xaiv qhov tsis raug ntawm cov nplaim hluav taws xob ntxiv, nws tuaj yeem ua rau muaj teeb meem thaum lub sijhawm ua, ua raws li cov ntawv pov thawj tsis raug, lossis ua rau lub tsho xaim lossis lub vaj huam sib luag substrate ntev - lub sijhawm siv tshuab ua haujlwm.
Daim ntawv thov ntawm Hexagonal Magnesium Hydroxide hauv Plastic Flame Retardancy
Kev ua tau zoo hla cov yas substrates
Lub halogen-dawb nplaim hluav tawshexagonal magnesium hydroxideMg(OH)₂ uas yog tsim nyob rau hauv ib chav kuaj ua haujlwm zoo nrog polyolefin tebchaw, tshwj xeeb tshaj yog LLDPE, LDPE, thiab EVA, uas yog cov ntaub ntawv tseem ceeb uas siv los ua kom tsawg - pa taws halogen- tsis muaj hlau rwb thaiv tsev thiab qhwv. Yog tias koj xav tau qee qhov txwv qhov ntsuas oxygen (LOI) thiab UL94 nplaim hluav taws hauv chav kawm, qhov chaw thau khoom feem ntau yog 40% thiab 65% los ntawm qhov hnyav. Hloov qhov chaw thiab npog nws nrog silane lossis stearic acid ua rau nws kis tau zoo dua thiab txwv tsis pub nws los ntawm kev sib koom ua ke thaum nws thauj khoom hnyav, thaum ua kom lub zog tensile thiab ncab thaum so.
Thaum sib tov zinc borate los yog liab phosphorus nrog roj hmab- cov khoom siv yas los yog cov khoom sib xyaw PVC, cov nyiaj Mg(OH)₂ uas yuav tsum tau muab ntxiv tuaj yeem txo qis thaum tseem muab tib theem ntawm cov nplaim hluav taws. Qhov no tuaj yeem pab cov tsim qauv uas tab tom sim ua kom cov nqi qis.
Formulation and processing Guidelines
Nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo saib xyuas qhov kev kho kom haum rau saum npoo, sib txuas cov txheej txheem shear, thiab tswj cov dej noo thaum ntxiv hexagonal Mg (OH)₂ rau cov khoom siv yas. Ua ntej compounding, cov hmoov yuav tsum tau qhuav kom qis dua 0.3% noo noo cov ntsiab lus. Qhov no txwv tsis pub cov pa tawm ntawm qhov tuag, uas tuaj yeem ua rau muaj qhov tsis zoo los yog qhov. Qhov kub zoo tshaj plaws rau ntxaib - ntsia hlau sib xyaw polyolefin tshuab feem ntau yog nruab nrab ntawm 160℃thiab 200 degree, uas yog qhov kub thiab txias uas zoo nyob rau hauv qhov thermal stability ntawm cov khoom no.
Kev Qhia Txog Kev Muag Khoom: Sourcing Zoo Hexagonal Magnesium Hydroxide rau Kev Siv Khoom
Muaj ntau yam uas yuav tsum tau txiav txim siab tshaj li tus nqi thaum yuav khoom siv hluav taws xob halogen-dawb nplaim taws retardant hmoov. Thaum nrhiav tus tshiabhexagonal magnesium hydroxidetus neeg muag khoom, cov kws tshaj lij thiab cov thawj coj yuav khoom ib txwm muab cov khoom no tso rau saum lawv cov npe:
Purity thiab impurity tswj: Mg(OH)₂ cov ntsiab lus yuav tsum ncav cuag ntau dua lossis sib npaug li 99.5%, nrog CaO Tsawg dua lossis sib npaug rau 0.05%, Fe Less dua lossis sib npaug rau 0.003%, thiab Cl Tsawg dua lossis sib npaug li 0.05% - cov tsis muaj kev cuam tshuam ncaj qha cuam tshuam rau polymer compatibility thiab xim {5 xim xim.
Particle loj sib xws: Nqaim D50 faib thiab tswj SSA (4–6 m² / g) yog qhov tseem ceeb rau kev tsim cov cwj pwm ntawm cov khoom tsim tawm.
Daim ntawv pov thawj thiab traceability: Cov neeg muab kev ntseeg siab tau muab SGS lossis thib peb -cov ntaub ntawv kuaj xyuas tog neeg, Cov Ntaub Ntawv Kev Nyab Xeeb raws li GHS cov qauv, thiab ntau cov ntaub ntawv taug qab.
Supply chain resilience: Rau cov khoom siv hluavtaws, kev ruaj ntseg ntawm cov khoom siv raw khoom thiab qhov sib xws ntawm cov txheej txheem nag lossis daus txiav txim siab ntev -lub sij hawm muab kev ntseeg siab - ib qho txiaj ntsig tseem ceeb tshaj cov ntxhia - nyob ntawm brucite hmoov.
Nws yog tus qauv coj los kuaj xyuas cov kev txwv no los ntawm cov qauv thawj zaug ua ntej cog lus rau kev txiav txim loj. Cov neeg muag khoom uas tso cai rau cov qauv sai thiab muab cov ntaub ntawv txheeb xyuas tag nrho qhia tau tias lawv muaj peev xwm ua tau zoo thiab ncaj ncees txog lawv cov nqi.
Ua kom muaj kev nyab xeeb thiab ua raws li thaum siv Hexagonal Magnesium Hydroxide
Hauv chaw ua haujlwm, cov tshuaj no tsis ua rau muaj kev pheej hmoo ntau. Standard PPE yog txaus rau tuav, xws li plua plav qhov ncauj qhov ntswg (N95 yam tsawg kawg nkaus), tsom iav kev nyab xeeb, thiab hnab looj tes. Cov khoom siv yog alkaline (pH ~ 10 nyob rau hauv dej ncua kev kawm ntawv) thiab tuaj yeem hnov mob nrog cov tshuaj acidic, yog li nws yuav tsum tau khaws cia rau hauv qhov chaw kaw, noo noo- pov thawj ntim kom deb ntawm cov kua qaub. Txhawm rau khaws cia ntau hauv silos kom tsis txhob caking, cov av noo yuav tsum tau tswj.
Raws li txoj cai, Mg(OH)₂ ua raws EU REACH (tsis muaj SVHC lub npe), RoHS Cov Lus Qhia 2011/65/EU, thiab California Proposition 65. Raws li cov kev cai hauv North America thiab Europe tau nruj dua ntawm cov nplaim hluav taws xob halogenated, tshwj xeeb tshaj yog nyob rau hauv cov hlau thiab cable, cov khoom siv hauv tsev, thiab cov ntaub ntawv hluav taws xob, ntau tus neeg tab tom nrhiav rau halogen certified dawb. Cov tuam txhab uas teeb tsa cov khoom siv txhim khu kev qha rau Mg(OH)₂ tam sim no yuav nyob rau hauv txoj haujlwm zoo dua rau thaum cov kev cai hloov pauv yav tom ntej.
Xaus
Hexagonal magnesium hydroxideyog ib qho pov thawj, muaj kev nyab xeeb, thiab technically superior halogen-dawb nplaim taws retardant rau cov ntaub ntawv yas. Nws endothermic decomposition mechanism, siab thermal stability, tsis yog - lom combustion profile, thiab compatibility nrog engineering polymers ua rau nws yog ib tug tswv yim khoom rau manufacturers nyob rau hauv lub cable, composite vaj huam sib luag, thiab yas industries. Sourcing ib tug siab -purity, nto- kho qib nrog zoo ib yam siv lead ua morphology - xws li chemically synthesized MH-S5 - kom ntseeg tau tias kev ua tau zoo thiab kev tswj hwm kev ua raws li cov kev xav tau ntawm kev lag luam.
FAQ
Dab tsi ua rau hexagonal magnesium hydroxide muaj kev nyab xeeb dua li cov nplaim hluav taws halogenated?
Thaum Mg(OH)₂ raug hlawv, nws tsuas yog muab cov dej vapor thiab magnesium oxide, tsis muaj teeb meem los yog corrosive gasses xws li brominated los yog chlorinated lwm txoj. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau halogen-dawb, qis- pa taws siv hauv cov xov hlau thiab cov chaw me me.
Dab tsi yog qhov pom zoo loading theem hauv polyolefin tebchaw?
Cov theem ntawm kev thauj khoom feem ntau yog nyob nruab nrab ntawm 40% thiab 65% los ntawm qhov hnyav, tab sis qhov no nyob ntawm lub hom phiaj kev faib tawm UL94 thiab qhov tsawg kawg nkaus LOI tus nqi. Nyob rau theem siab dua, nws feem ntau yog qhov zoo tshaj plaws los npog cov hmoov av nrog ib yam dab tsi kom nws cov tshuab ua haujlwm zoo.
MH-S5 txawv li cas ntawm cov ntxhia brucite hmoov?
MH-S5 yog tsim los ntawm brine siv cov cuab yeej los nag lossis daus niaj hnub, uas ua rau Mg(OH)₂ uas yog 99.5% ntshiab thiab nruj tswj cov nqi ntawm impurities uas tam sim no. Mineral brucite nyob ntawm cov ore nws los ntawm thiab muaj ntau yam ntawm purity thiab particle loj.
Hexagonal Mg (OH)₂ puas tuaj yeem siv rau hauv PVC tawv?
Yog lawm, tab sis kev sib xyaw ua ke nrog zinc borate lossis lwm yam co- additives feem ntau siv kom tau txais cov nplaim hluav taws zoo tshaj plaws thaum txo qis tag nrho cov load thiab ua kom cov txheej txheem ntawm cov khoom.
Cov ntawv pov thawj dab tsi kuv yuav tsum tau thov los ntawm tus neeg xa khoom?
Nug cov ntaub ntawv ntsuam xyuas los ntawm SGS lossis lwm tus neeg thib peb zoo sib xws, Daim Ntawv Qhia Txog Kev Nyab Xeeb uas ua raws li GHS cov cai, pov thawj tias cov khoom ua tau raws li REACH, thiab cov ntaub ntawv tshuaj xyuas rau txhua qhov ntau uas suav nrog cov ntaub ntawv ntawm purity, particle size, brightness, thiab noo noo cov ntsiab lus.
Koom Tes Nrog Kev Ntseeg Hexagonal Magnesium Hydroxide Supplier
Rau ntau tshaj 20 xyoo,Henghao Technology Development (Hangzhou) Co., Ltd. tau muag siab -kev ua tau zoo tshuaj ntxiv rau cov tuam txhab hauv 33 lub teb chaws. Peb MH-S5 yog hexagonal magnesium hydroxide uas yog tsim los ntawm tshuaj lom neeg thiab muaj purity tsawg kawg yog 99.5%, whiteness ntawm tsawg kawg yog 98%, thiab nruj tswj particle morphology. Nws ua tau raws li cov kev xav tau nruj ntawm qis- pa taws halogen{10}}dawb cable, vaj huam sib luag sib xyaw, thiab daim ntawv thov kev sib xyaw yas. Kom tau txais ib daim qauv thiab cov ntaub ntawv tshawb fawb, email rau peb ntawminfo@henghaopigment.comlos yog mus rau ntawm henghaocolor.com tam sim no.
Cov ntaub ntawv
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2. Rothon, RN, & Hornsby, PR (1996). Nplaim retardant teebmeem ntawm Magnesium hydroxide. Polymer Degradation thiab Stability, 54(2–3), 383–385.
3. Lautid, F., Bonnaud, L., Alexandre, M., Lopez-Cuesta, J.-M., & Dubois, P. (2009). Kev Pom Zoo Tshiab hauv Cov Khoom Siv Hluav Taws Xob Cov Hluav Taws Xob: Los ntawm Cov Txheej Txheem rau Nanocomposites. Materials Science thiab Engineering: R, 63(3), 100–125.
4. Hull, TR, & Kandola, BK (Eds.). (2009). Hluav taws kub Retardancy ntawm Polymers: Cov Tswv Yim Tshiab thiab Mechanisms. Royal Society of Chemistry.
5. Wypych, G. (2016). Phau ntawv ntawm Fillers (4th ed.). ChemTec Pub.
6. European Chemicals Agency (ECHA). (2023). Txoj Cai REACH: Kev Ntsuas Tshuaj thiab Kev Ua Raws Cai - Magnesium Hydroxide (CAS 1309-42-8). ECHA Publications Office.
