Li-flame retardants tse thehiloeng ho phosphorus ke mofuta oa li-retardants tse sebetsang hantle haholo, tse ka tšeptjoang le tse sebelisoang haholo tse hapileng tlhokomelo e kholo ho tsoa ho bafuputsi. Liphihlello tse tsotehang li entsoe ka ho kopanya le ho sebelisoa ha tsona.
1. Tšebeliso ea Li-Flame Retardants tse thehiloeng ho Phosphorus ho PP
Thepa ea 'mele ea polypropylene (PP) e bapala karolo ea bohlokoa ts'ebelisong ea eona ea indasteri. Leha ho le joalo, index ea eona e fokolang ea oksijene (LOI) e ka bang 17.5% feela, e etsa hore e chese haholo ka lebelo la ho chesa ka potlako. Boleng ba lisebelisoa tsa PP lits'ebetsong tsa indasteri bo susumetsoa ke ho lieha ha lelakabe la bona le thepa ea 'mele. Lilemong tsa morao tjena, microencapsulation le phetoho ea holim'a metsi e fetohile mekhoa e ka sehloohong ea thepa ea PP e thibelang malakabe.
Mohlala oa 1: Ammonium polyphosphate (APP) e fetotsoeng ka silane coupling agent (KH-550) le tharollo ea ethanol ea silicone e entsoeng ka thepa ea PP. Ha karolo e kholo ea APP e fetotsoeng e fihla ho 22%, LOI ea thepa e ile ea eketseha ho 30.5%, ha thepa ea eona ea mechine e boetse e finyella litlhoko le ho feta lisebelisoa tsa PP tse tukang lelakabe ka APP e sa fetoloang.
Mohlala 2: APP e ne e kentsoe ka har'a khetla e entsoeng ka melamine (MEL), oli ea silicone ea hydroxyl, le resin ea formaldehyde ka in-situ polymerization. Joale li-microcapsules li ile tsa kopanngoa le pentaerythritol 'me tsa sebelisoa ho lisebelisoa tsa PP bakeng sa ho thibela lelakabe. Thepa e bonts'itse ho lieha ho hoholo ha lelakabe, ka LOI ea 32% le tekanyetso ea teko ea ho tuka ea UL94 V-0. Esita le ka mor'a phekolo ea ho qoelisoa ka metsing a chesang, motsoako o ile oa boloka ho se sebetse hantle ha lelakabe le thepa ea mochine.
Mohlala oa 3: APP e fetotsoe ka ho e roala ka aluminium hydroxide (ATH), 'me APP e fetotsoeng e kopantsoe le dipentaerythritol ka tekanyo ea boima ba 2.5: 1 bakeng sa tšebeliso ea thepa ea PP. Ha karolo ea kakaretso ea lelakabe la lelakabe e ne e le 25%, LOI e fihlile ho 31.8%, tekanyo ea ho fokotsa lelakabe e fihletse V-0, 'me lebelo le phahameng la ho lokolloa ha mocheso le fokotsehile haholo.
2. Ho sebelisoa ha Phosphorus-Based Flame Retardants ho PS
Polystyrene (PS) e tuka haholo 'me e tsoela pele ho tuka ka mor'a hore mohloli oa mollo o tlosoe. Ho sebetsana le litaba tse kang ho lokolloa ha mocheso o phahameng le ho ata ha lelakabe ka potlako, li-flame retardants tse se nang halogen tse thehiloeng ho phosphorus li bapala karolo ea bohlokoa ho PS flame retardancy. Mekhoa e tloaelehileng e thibelang malakabe bakeng sa PS e kenyelletsa ho roala, ho ima, ho hlatsoa, le polymerization-stage flame retardancy.
Mohlala 1: Sekhomaretsi se nang le phosphorus se thibelang mollo bakeng sa PS e atolositsoeng se ile sa etsoa ka mokhoa oa sol-gel ho sebelisa N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane le phosphoric acid. Foam ea PS e thibelang mollo e ile ea lokisoa ho sebelisoa mokhoa oa ho roala. Ha mocheso o feta 700 ° C, foam ea PS e tšoaroang ka sekhomaretsi e etsa lesela la char le fetang 49%.
Bafuputsi lefats'eng ka bophara ba hlahisitse meaho e thibelang malakabe e nang le phosphorus ka har'a metsoako ea vinyl kapa ea acrylic, e ntan'o kopanngoa le styrene ho hlahisa li-copolymers tse nang le phosphorus tse nang le styrene. Liphuputso li bontša hore ha li bapisoa le PS e hloekileng, li-styrene copolymers tse nang le phosphorus li bonts'a LOI e ntlafetseng haholo le masala a char, a bontšang botsitso bo phahameng ba mocheso le ho lieha ha lelakabe.
Mohlala 2: vinyl-terinated oligomeric phosphate hybrid macromonomer (VOPP) e ile ea hlomathiseletsoa ho ketane e kholo ea PS ka graft copolymerization. Graft copolymer e bonts'itse ho lieha ha lelakabe ka mochine o tiileng oa mohato. Ha litaba tsa VOPP li ntse li eketseha, LOI e ile ea phahama, sekhahla sa ho lokolla mocheso le mocheso o felletseng oa theoha, 'me ho rotha ho qhibiliha ho ile ha nyamela, ho bonts'a litlamorao tse thibelang lelakabe.
Ho feta moo, li-inorganic phosphorus-based retardants tsa lelakabe li ka hokahana ka lik'hemik'hale le li-graphite kapa li-nitrogen-based retardants tsa lelakabe bakeng sa tšebeliso ea PS flame retardancy. Mekhoa ea ho roala kapa ea borashe le eona e ka sebelisoa ho sebelisa li-retardants tse thehiloeng ho phosphorus ho PS, ho ntlafatsa haholo LOI ea thepa le masala a char.
3. Ho sebelisoa ha Phosphorus-Based Flame Retardants PA
Polyamide (PA) e chesa haholo 'me e hlahisa mosi o mongata nakong ea ho tuka. Kaha PA e sebelisoa haholo likarolong tsa elektroniki le lisebelisoa, kotsi ea likotsi tsa mollo e matla haholo. Ka lebaka la sebopeho sa amide ka har'a ketane ea eona e kholo, PA e ka fokotsoa ke lelakabe ho sebelisoa mekhoa e fapaneng, ka li-retardants tse eketsang le tse sebetsang hantle tse sebetsang hantle. Har'a li-PA tse thibelang malakabe, letsoai la alkyl phosphinate ke lona le sebelisoang haholo.
Mohlala oa 1: Aluminium isobutylphosphinate (A-MBPa) e kenyelelitsoe ho PA6 matrix ho lokisetsa thepa e kopantsoeng. Nakong ea tlhahlobo ea ho lieha ha malakabe, A-MBPa e ile ea bola pele ho PA6, ea etsa lera le letenya le le tsitsitseng le sirelelitseng PA6. Thepa e fihletse LOI ea 26.4% le tekanyo ea ho fokotsa lelakabe ea V-0.
Mohlala 2: Nakong ea polymerization ea hexamethylenediamine le adipic acid, 3 wt% ea flame retardant bis (2-carboxyethyl)methylphosphine oxide (CEMPO) e ile ea eketsoa ho hlahisa PA66 e thibelang lelakabe. Liphuputso li bonts'itse hore PA66 e thibelang malakabe e bonts'itse ho lieha ho hoholo ha lelakabe ha ho bapisoa le PA66 e tloaelehileng, e nang le LOI e phahameng haholo. Tlhahlobo ea char layer e bonts'itse hore karolo e teteaneng ea char ea PA66 e thibelang malakabe e na le li-pores tsa boholo bo fapaneng, tse thusitseng ho arola mocheso le phetisetso ea khase, ho bonts'a ts'ebetso e ts'oanang e thibelang malakabe.
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Nako ea poso: Aug-15-2025
