Adhesive / sealant / Bonding nplaim retardants daim ntawv thov
Kev tsim kho teb:Kev txhim kho cov qhov rooj tua hluav taws, cov phab ntsa, cov hluav taws kub
Electronic thiab hluav taws xob teb:Circuit boards, cov khoom siv hluav taws xob
Automotive kev lag luam:Rooj zaum, dashboards, qhov rooj panels
Aerospace teb:Aviation instruments, spacecraft structures
Cov khoom siv hauv tsev:Rooj tog, pem teb, wallpapers
Nplaim Retardant Adhesive Transfer Daim kab xev:Zoo heev rau cov hlau, foams thiab yas xws li polyethylene
Kev ua haujlwm ntawm nplaim taws retardants
Cov nplaim hluav taws kub hnyiab inhibit lossis ncua kev sib kis ntawm hluav taws los ntawm kev tawm tsam cov tshuaj lom neeg hauv cov nplaim taws lossis los ntawm kev tsim cov txheej tiv thaiv ntawm cov khoom siv.
Lawv tuaj yeem sib xyaw nrog cov khoom siv hauv paus (ntxiv cov nplaim retardants) los yog tshuaj lom neeg rau nws (reactive nplaim retardants).Mineral nplaim taws retardants feem ntau yog additive thaum cov organic tebchaw tuaj yeem yog reactive lossis additive.
Tsim Cov Hluav Taws Xob-Retardant Adhesive
Qhov hluav taws kub zoo muaj plaub theem:
Kev pib
Kev loj hlob
Steady State, thiab
lwj
Kev sib piv ntawm Degradation Temperatures ntawm Ib Hom Thermoset Adhesive
Nrog cov neeg ncav cuag ntau theem ntawm hluav taws
Txhua lub xeev muaj qhov sib thooj degradation kub raws li qhia hauv daim duab.Hauv kev tsim cov nplaum hluav taws kub-retardant, cov neeg tsim khoom yuav tsum tso lawv cov kev siv zog ntawm kev xa tawm qhov kub thiab txias ntawm qhov hluav taws kub zoo rau daim ntawv thov:
● Hauv kev tsim hluav taws xob, piv txwv li, ib qho nplaum yuav tsum txwv tsis pub muaj kev nyiam ntawm cov khoom siv hluav taws xob kom ntes hluav taws - lossis pib - yog tias muaj qhov ua txhaum ntawm qhov kub thiab txias.
● Rau kev sib txuas ntawm cov vuas lossis cov vaj huam sib luag, cov nplaum nplaum yuav tsum tiv thaiv cov txheej txheem ntawm kev loj hlob thiab nyob ruaj khov, txawm tias nyob rau hauv kev sib cuag nrog cov nplaim taws.
● Lawv kuj yuav tsum txo cov pa phem thiab cov pa luam yeeb tsawg.Cov txheej txheem Load-bearing zoo li yuav ntsib tag nrho plaub theem ntawm qhov hluav taws kub.
Limiting combustion voj voog
Txhawm rau txwv lub voj voog combustion, ib lossis ob peb txheej txheem ua rau hluav taws yuav tsum raug tshem tawm los ntawm ob qho:
● Tshem tawm cov roj tsis hloov pauv, raws li kev ua kom txias
● Kev tsim cov thermal barrier, raws li los ntawm charring, yog li tshem tawm cov roj los ntawm kev txo cov cua sov, los yog
● Quenching cov kev xav hauv cov nplaim taws, zoo li los ntawm kev ntxiv cov khoom siv hluav taws xob tsim nyog
Cov nplaim retardant additives ua qhov no los ntawm kev ua chemically thiab / los yog lub cev nyob rau hauv lub condensed (khoom) theem los yog nyob rau hauv lub roj theem los ntawm muab ib qho ntawm cov nram qab no functions:
●Char yav dhau los:Feem ntau phosphorus tebchaw, uas tshem tawm cov pa roj carbon monoxide thiab muab ib txheej rwb thaiv tsev tiv thaiv hluav taws kub.Muaj ob txoj hauv kev sib sau ua ke:
Redirection ntawm cov tshuaj tiv thaiv kev koom tes nyob rau hauv decomposition nyob rau hauv txaus siab ntawm cov tshuaj tiv thaiv yielding carbon es tsis CO los yog CO2 thiab
Tsim ib txheej txheej ntawm kev tiv thaiv char
●Thaum tshav kub kub absorbers:Feem ntau cov hlau hydrates, xws li txhuas trihydrate los yog magnesium hydroxide, uas tshem tawm cov cua sov los ntawm evaporation ntawm cov dej los ntawm cov nplaim hluav taws cov qauv.
●Nplaim quenchers:Feem ntau bromine- lossis chlorine-raws li halogen systems uas cuam tshuam nrog cov tshuaj tiv thaiv hauv nplaim taws.
● Synergists:Feem ntau antimony tebchaw, uas txhim khu kev ua tau zoo ntawm cov nplaim hluav taws.
Qhov tseem ceeb ntawm Nplaim Retardants hauv Kev Tiv Thaiv Hluav Taws
Cov nplaim hluav taws kub hnyiab yog ib feem tseem ceeb ntawm kev tiv thaiv hluav taws vim lawv tsis tsuas yog txo qhov kev pheej hmoo ntawm hluav taws kub, tab sis kuj ntawm nws qhov kev nthuav tawm.Qhov no nce lub sijhawm khiav tawm thiab, yog li, tiv thaiv tib neeg, khoom vaj khoom tsev, thiab ib puag ncig.
Muaj ntau txoj hauv kev los tsim cov nplaum nplaum ua hluav taws kub retardant.Cia peb nkag siab qhov kev faib tawm ntawm cov nplaim hluav taws xob kom ntxaws.
Qhov yuav tsum tau rau cov hluav taws kub retardant adhesives yog nce thiab lawv siv nthuav mus rau ib tug xov tooj ntawm txawv kev lag luam sectors piv txwv xws li aerospace, kev tsim kho, electronics thiab pej xeem thauj (tsheb ciav hlau tshwj xeeb).
1: Yog li, ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws yog kom muaj nplaim hluav taws / tsis kub hnyiab lossis, zoo dua, inhibit nplaim taws - kom raug hluav taws kub.
2: Cov nplaum yuav tsum tsis txhob tso pa tawm ntau dhau los yog muaj kuab lom.
3: Cov nplaum yuav tsum tau tswj nws cov qauv kev ntseeg siab ntawm qhov kub thiab txias (muaj qhov kub thiab txias zoo li qhov ua tau).
4: Decomposed adhesive khoom yuav tsum tsis txhob muaj tshuaj lom by-products.
Nws zoo li qhov kev txiav txim siab siab tuaj yeem ua tiav nrog cov nplaum uas tuaj yeem ua tau raws li cov kev xav tau no - thiab nyob rau theem no, viscosity, xim, kho ceev thiab nyiam txoj kev kho, qhov sib txawv, kev ua tau zoo, thermal conductivity, thiab ntim khoom tseem tsis tau ua. xav txog.Tab sis cov kws kho mob txoj kev loj hlob txaus siab rau qhov kev sib tw zoo yog li coj nws mus!
Cov kev cai ib puag ncig zoo li kev lag luam thiab cheeb tsam tshwj xeeb
Ib pawg loj ntawm cov kev tshawb fawb nplaim hluav taws tau pom tias muaj ib puag ncig zoo thiab kev noj qab haus huv profile.Cov no yog:
● Ammonium polyphosphate
● Aluminium diethylphosphinate
● Aluminium hydroxide
● Magnesium hydroxide
● Melamine polyphosphate
● Dihydrooxaphosphaphenanthrene
● Zinc stannate
● Zinc hydroxstannate
Nplaim retardancy
Adhesives tuaj yeem tsim kho kom haum rau qhov zawv zawg ntawm qhov hluav taws kub retardancy - ntawm no yog cov ntsiab lus ntawm Underwriters Laboratory Testing classifications.Raws li cov neeg tsim khoom nplaum, peb tab tom pom kev thov feem ntau rau UL94 V-0 thiab qee zaus rau HB.
UL94 ua
● HB: hlawv qeeb ntawm cov qauv kab rov tav.Hlawv tus nqi <76mm / min rau thickness <3mm los yog kub kub nres ua ntej 100mm
● V-2: ( ntsug) qhov kub hnyiab nres hauv <30 vib nas this thiab tej drips yuav flaming
● V-1: ( ntsug) qhov kub hnyiab nres hauv <30 vib nas this, thiab tso cai drips (tab sis yuav tsumtsis yogkub)
● V-0 ( ntsug) hlawv nres hauv <10 vib nas this, thiab tso cai drips (tab sis yuav tsumtsis yogkub)
● 5VB ( ntsug cov quav hniav) hlawv nres hauv <60 vib nas this, tsis muaj drips;Cov qauv yuav tsim ib lub qhov.
● 5VA raws li saum toj no tab sis tsis tso cai los tsim lub qhov.
Ob qhov kev faib tawm tom qab no yuav cuam tshuam rau lub vaj huam sib luag sib txuas es tsis yog cov qauv ntawm cov nplaum.
Qhov kev sim no yooj yim zoo nkauj thiab tsis xav tau cov cuab yeej ntse, ntawm no yog qhov kev sim teeb tsa yooj yim:
Nws tuaj yeem nyuaj heev los ua qhov kev sim no ntawm qee cov nplaum ib leeg.Tshwj xeeb tshaj yog rau cov nplaum uas yuav tsis kho kom zoo sab nraud ntawm qhov sib koom ua ke.Hauv qhov no, koj tuaj yeem sim tsuas yog nruab nrab ntawm cov khoom sib txuas.Txawm li cas los xij, epoxy kua nplaum thiab UV nplaum tuaj yeem kho tau raws li cov qauv kuaj.Tom qab ntawd, ntxig cov qauv kuaj rau hauv lub puab tsaig ntawm lub clamp sawv ntsug.Khaws ib lub thoob xuab zeb nyob ze, thiab peb xav kom ua qhov no nyob rau hauv kev rho tawm los yog hauv lub fume cupboard.Tsis txhob tso tej pa taws tswb!Tshwj xeeb tshaj yog cov uas txuas ncaj qha rau cov kev pabcuam xwm txheej ceev.Catch cov qauv ntawm hluav taws thiab lub sij hawm ntev npaum li cas nws yuav siv sij hawm qhov hluav taws kub tua.Tshawb xyuas cov drips hauv qab (cia siab tias, koj muaj lub tais pov tseg hauv qhov chaw; txwv tsis pub, ua tsaug rau qhov zoo worktop).
Adhesive chemists muab ntau cov khoom ntxiv los ua cov nplaum nplaum hluav taws - thiab qee zaum txawm tias kom tua hluav taws (txawm hais tias qhov tshwj xeeb no nyuaj dua rau kev ua tiav niaj hnub no nrog ntau cov khoom lag luam tam sim no thov cov qauv tsis muaj halogen).
Additives rau hluav taws resistant adhesives muaj xws li
● Organic char-forming compounds uas pab txo cov cua sov thiab haus luam yeeb thiab tiv thaiv cov khoom hauv qab kom tsis txhob hlawv ntxiv.
● Thaum tshav kub kub absorbers, cov no yog ib txwm hlau hydrates uas pab muab cov nplaum zoo thermal zog (feem ntau, cov hluav taws kub retardant adhesives raug xaiv rau tshav kub dabneeg daim ntawv thov qhov twg siab tshaj thermal conductivity yuav tsum tau).
Nws yog ib qho ua tib zoo sib npaug vim tias cov tshuaj ntxiv no yuav ua rau cuam tshuam nrog lwm cov khoom nplaum xws li lub zog, rheology, kho ceev, yooj thiab lwm yam.
Puas muaj qhov sib txawv ntawm cov nplaum tiv thaiv hluav taws thiab hluav taws kub retardant adhesives?
Yog lawm!Muaj.Ob lub ntsiab lus tau raug bandied txog hauv tsab xov xwm, tab sis nws yog qhov zoo tshaj plaws los teeb tsa zaj dab neeg ncaj.
Hluav taws kub resistant adhesives
cov no feem ntau yog cov khoom xws li inorganic nplaum cements thiab sealants.Lawv tsis hlawv thiab lawv tiv taus qhov kub thiab txias.Daim ntawv thov rau cov khoom no muaj xws li, blast furnaces, ncu thiab lwm yam. Lawv tsis ua dab tsi kom tsis txhob muaj kev sib sau ua ke.Tab sis lawv ua haujlwm zoo los tuav tag nrho cov khoom kub ua ke.
Hluav taws kub retardant adhesives
Cov no pab tua cov nplaim taws thiab maj mam kis hluav taws.
Ntau lub lag luam nrhiav cov hom nplaum no
● Electronics- rau potting thiab encapsulating electronics, bonding heat sinks, Circuit Court boards thiab lwm yam. Ib qho hluav taws xob luv Circuit Court tuaj yeem ua rau hluav taws tau yooj yim.Tab sis PCBs muaj cov tshuaj tiv thaiv hluav taws - feem ntau tseem ceeb uas cov nplaum kuj muaj cov khoom no.
● Kev tsim kho- cladding thiab flooring (tshwj xeeb tshaj yog nyob rau hauv pej xeem cheeb tsam) feem ntau yuav tsum tsis txhob hlawv thiab khi nrog hluav taws kub retardant nplaum.
● Kev thauj mus los rau pej xeem- tsheb ciav hlau, tsheb npav sab hauv, tsheb ciav hlau thiab lwm yam.Tsis tsuas yog cov nplaum nplaum pab tiv thaiv kev sib kis ntawm hluav taws.Tab sis lawv muab kev sib koom ua ke zoo nkauj yam tsis tas yuav tsum muaj qhov tsis pom kev (thiab rattly) cov neeg kho tshuab fasteners.
● Lub dav hlau- Raws li tau hais dhau los, cov khoom siv sab hauv tsev yog nyob rau hauv cov kev cai nruj.Lawv yuav tsum yog hluav taws kub retardant thiab tsis ua rau lub tsev nrog cov pa taws dub thaum muaj hluav taws.
Cov txheej txheem thiab cov txheej txheem xeem rau nplaim hluav taws
Cov txheej txheem cuam tshuam txog kev ntsuas hluav taws yog tsom rau kev txiav txim siab txog kev ua haujlwm ntawm cov khoom siv nrog rau cov nplaim taws, pa taws, thiab tshuaj lom (FST).Ntau qhov kev sim tau siv dav los txiav txim siab qhov tsis kam ntawm cov khoom siv rau cov xwm txheej no.
Xaiv cov kev xeem rau nplaim hluav taws
| Kev kub hnyiab | |
| ASTM D 635 Cov | “Rate of Burning of Plastics” |
| ASTM E 162 | "Flammability ntawm cov ntaub ntawv yas" |
| UAS 94 | "Flammability ntawm cov ntaub ntawv yas" |
| TS EN ISO 5657 Cov | "Ignitability ntawm Cov Khoom Siv Hauv Tsev" |
| SIB 6853 | “Flame Propagation” |
| 25.853 Nws | "Airworthiness Standard - Compartment interiors" |
| NF T 51-071 | “Oxygen Index” |
| NF C 20-455 | “Glow Wire Test” |
| TIAB SA 53438 | “Nplaim Propagation” |
| Tsis kam mus rau qhov kub thiab txias | |
| BS 476 Ntu 7 | "Ntog Sib Nqus Cov Hluav Taws Xob - Cov Khoom Siv Hauv Tsev" |
| TIAB SA 4172 | "Cov cwj pwm hluav taws kub ntawm cov khoom siv hauv tsev" |
| ASTM E 648 Cov Lus Qhia | "Plaub npog - Radiant Vaj Huam Sib Luag" |
| Toxicity | |
| SMP 800C ua haujlwm | “Toxicity Testing” |
| SIB 6853 | “Smoke Emission” |
| NF X 70-100 | “Toxicity Testing” |
| TSO 1000.01 | “Smoke Density” |
| Haus luam yeeb tiam | |
| SIB 6401 | "Specific Optical Density of Haus luam yeeb" |
| SIB 6853 | “Smoke Emission” |
| TIAB SA 711 | "Smoke Index ntawm Cov Khoom Siv Hluav Taws Xob" |
| ASTM D 2843 3 | "Smoke Density los ntawm hlawv cov yas" |
| ISO CD5659 | "Specific Optical Density - Haus luam yeeb tiam" |
| TSO 1000.01 | “Smoke Density” |
| TIAB SA 54837 | “Smoke Generation” |
Kuaj Resistance rau hlawv
Nyob rau hauv feem ntau cov kev ntsuam xyuas uas ntsuas qhov tsis kam mus hlawv, haum adhesives yog cov uas tsis tas yuav hlawv rau ib lub sij hawm tseem ceeb tom qab tshem tawm ntawm qhov chaw ntawm ignition.Nyob rau hauv cov kev ntsuam xyuas no tus qauv kho cov nplaum yuav raug ignition ywj siab ntawm ib tug adherend (cov nplaum yog kuaj raws li ib tug dawb zaj duab xis).
Txawm hais tias txoj hauv kev no tsis simulate qhov tseeb, nws muab cov ntaub ntawv tseem ceeb ntawm cov txheeb ze tsis kam ntawm cov nplaum rau hlawv.
Cov qauv qauv nrog ob lub nplaum thiab adherend kuj tuaj yeem kuaj.Cov txiaj ntsig no tuaj yeem ua tus sawv cev ntau dua ntawm kev ua tau zoo ntawm cov nplaum hauv qhov hluav taws kub tiag tiag vim tias qhov kev pab cuam muab los ntawm adherend tuaj yeem yog qhov zoo lossis tsis zoo.
UL-94 Vertical Hlawv Test
Nws muab kev ntsuam xyuas ua ntej ntawm tus txheeb ze flammability thiab dripping rau polymers siv hauv cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv, thiab lwm yam kev siv.Nws hais txog qhov kawg-siv cov yam ntxwv ntawm ignition, hlawv tus nqi, nplaim taws kis tau tus mob, roj pab, siv ntawm burning, thiab cov khoom ntawm combustion.
Ua hauj lwm thiab teeb tsa - Hauv qhov kev sim no ib zaj duab xis los yog coated substrate qauv yog mounted vertically nyob rau hauv ib daim ntawv dawb enclosure.Lub burner yog muab tso rau hauv qab tus qauv rau 10 vib nas this thiab lub sij hawm ntawm flaming yog timed.Ib qho dej ntws uas cuam tshuam cov paj rwb phais tso rau 12 ntiv tes hauv qab cov qauv yog sau tseg.
Qhov kev xeem muaj ntau yam kev faib tawm:
94 V-0: Tsis muaj cov qauv muaj hluav taws kub combustion rau ntau tshaj 10 vib nas this tom qab ignition.Cov qauv tsis kub hnyiab mus txog qhov tuav clamp, ntws thiab ignite cov paj rwb, los yog muaj glowing combustion txuas ntxiv rau 30 vib nas this tom qab tshem tawm cov nplaim taws.
94 V-1: Tsis muaj cov qauv yuav tsum muaj hluav taws kub combustion ntev dua 30 vib nas this tom qab txhua qhov hluav taws kub.Cov qauv tsis kub hnyiab mus rau qhov tuav clamp, drip thiab ignite cov paj rwb, los yog muaj ib tug afterglow ntawm ntau tshaj 60 vib nas this.
94 V-2: Qhov no suav nrog cov qauv zoo ib yam li V-1, tshwj tsis yog tias cov qauv tso cai rau drip thiab ignite cov paj rwb hauv qab cov qauv.
Lwm cov tswv yim los ntsuas qhov kub hnyiab
Lwm txoj hauv kev los ntsuas qhov kub tsis kam ntawm cov khoom siv yog ntsuas qhov ntsuas qhov ntsuas oxygen (LOI).Lub LOI yog qhov tsawg kawg nkaus ntawm cov pa oxygen qhia raws li qhov ntim feem pua ntawm kev sib xyaw ntawm cov pa thiab nitrogen uas tsuas yog txhawb cov nplaim hluav taws kub ntawm cov khoom pib ntawm chav tsev kub.
Kev tiv thaiv ntawm ib qho nplaum rau qhov kub thiab txias thaum muaj hluav taws kub hnyiab yuav tsum tau txiav txim siab tshwj xeeb ib sab ntawm cov nplaim taws, pa taws, thiab cov tshuaj lom.Feem ntau lub substrate yuav tiv thaiv cov nplaum los ntawm hluav taws.Txawm li cas los xij, yog tias cov nplaum nplaum los yog degrades vim qhov kub ntawm qhov hluav taws kub, qhov sib koom ua ke tuaj yeem ua tsis tiav ua rau kev sib cais ntawm cov substrate thiab cov nplaum.Yog tias qhov no tshwm sim, cov nplaum nws tus kheej tau nthuav tawm ua ke nrog cov substrate thib ob.Cov chaw tshiab no ces tuaj yeem pab ntxiv rau qhov hluav taws kub.
NIST pa taws ntom ntom chamber (ASTM D2843, BS 6401) yog siv dav hauv txhua qhov kev lag luam rau kev txiav txim siab ntawm cov pa luam yeeb tsim los ntawm cov khoom siv thiab cov khoom sib dhos mounted nyob rau hauv txoj hauj lwm ntsug nyob rau hauv lub kaw chamber.Cov pa luam yeeb ntom ntom yog ntsuas optically.
Thaum cov nplaum nplaum yog sandwiched ntawm ob lub substrates, qhov hluav taws kub tsis kam thiab thermal conductivity ntawm cov substrates tswj qhov decomposition thiab pa taws emission ntawm cov nplaum.
Hauv kev sim haus luam yeeb, cov nplaum tuaj yeem kuaj ib leeg raws li cov txheej txheem dawb los ua kom muaj qhov xwm txheej phem tshaj plaws.
Nrhiav kom haum nplaim retardant qib
Saib ntau yam ntawm cov nplaim hluav taws kub retardant qib muaj nyob rau hauv kev ua lag luam niaj hnub no, txheeb xyuas cov ntaub ntawv kev lag luam ntawm txhua yam khoom, tau txais kev pab cuam los yog thov cov qauv.
TF-101, TF-201, TF-AMP
