Lelapeng le thibelang malakabe, ho na le MCA e thibelang malakabe a chesang lilemong tsa morao tjena, esita le ha e ne e haella ka nako e le 'ngoe. Joale na u utloisisa hore na MCA ke eng ? Molao-motheo oa se thibelang malakabe o hlakile? A re shebeng hammoho!
Li-retardants tse thehiloeng ho naetrojene ke life?
Hajoale, li-retardants tsa lelakabe tse thehiloeng ho naetrojene li kenyelletsa haholo mekhahlelo e meraro: melamine, dicyandiamide, matsoai a guanidine (guanidine carbonate, guanidine phosphate, guanidine phosphate condensed le guanidine sulfamate) le tse nkiloeng ho tsona, haholo-holo tse nkiloeng ho phosphate.
- Melamine
Melamine e atisa ho sebelisoa e le karolo e phophomang ha ho etsoa liphahlo tse sa keneleng mollo, tse nang le phello e ntle ea ho phophoma le ho etsoa ha carbon e teteaneng. Ntle le ho sebelisoa e le ntho e thibelang lelakabe feela, mefuta e atisang ho sebelisoa e thibelang malakabe ke letsoai le nkiloeng le hlahisoang ke karabelo e nang le asiti 'me le sebelisoa haholo ka li-plastiki tsa PE, PP le PVC le li-plastiki tse ling tsa thermoplastic le thermosetting. E kopantsoe le phosphate ea metsi, melamine e sebelisoa haholo ho foam ea polyurethane e thibelang mollo.
- Dicyandiamide
Dicyandiamide e sebelisoa haholo-holo ha ho etsoa li-guanidinium salt flame retardants, tse ka nkang sebaka sa melamine kapa tsa kopanngoa le melamine. Lipatente tsa Europe li tlaleha hore dicyandiamide e kopantsoeng ka tekanyo e lekanang 'me e eketsoa ka 5% e ka etsa hore polyamide e fihlelle UL94 V-0 lelakabe la retardant,' me sena se thibelang lelakabe ha se na phello e fokolang matla a ho taboha a thepa. Ho feta moo, dicyandiamide e ka sebelisoa ho etsa sekhomaretsi se sa cheng bakeng sa patsi.
- Matsoai a Guanidine
Ntle le ho sebelisoa e le li-intermediate bakeng sa lithethefatsi le dae, matsoai a guanidine a atisa ho sebelisoa e le lintho tse thibelang malakabe bakeng sa lisebelisoa tse thehiloeng ho cellulose, tse kang lehong, pampiri le karete. Li-retardants tsena tsa malakabe li na le thepa ea nako e telele e thibelang malakabe 'me ha li na hygroscopic haholo ho feta li-inorganic flame retardants' me li na le thepa e ntle ea mokhabiso, kahoo li sebelisoa haholo ha ho etsoa lehong la mokhabiso la maemo a holimo. Ho phaella moo, e ka boela ea sebelisoa e le karolo ea moemeli oa foaming ka liaparo tsa intumescent tse sa keneleng mollo.
MCA ke sehlahisoa sa lelakabe se eketsang se entsoeng ka melamine le asiti ea cyanuric ka mocheso o itseng 'me se kopantsoe le metsi joalo ka seaplane. Ha e na chefo, ha e na monko ebile ha e latsoehe, 'me e na le mocheso o phahameng oa ho bola (o tsitsitse haholo ho 300 ° C, e bolang ka holimo ho 600 ° C). Ha e na feela phello e ntle ea ho thibela mollo, empa hape e na le mosi o monyenyane nakong ea ts'ebetso, e lumellana hantle le lisebelisoa tsa polymer 'me ha ho na ketsahalo ea ho falla ha holim'a metsi. E sebelisoa haholo-holo bakeng sa ho thibela lelakabe la nylon, PBT, PP, epoxy resin, organosilicon, polyurethane, rabara le lisebelisoa tse ling tsa polymer. Phello ea eona e thibelang malakabe e ntle, 'me e ka ba le phello e ntle ea synergistic ka phosphorus, bromine le antimony flame retardants,' me e ka boela ea sebelisoa hammoho le lisebelisoa tse ling ho fumana phello e ntle ea ho thibela mollo. Ho ea ka pono ea moruo, ke eona e sebetsang ka ho fetisisa e thibelang malakabe bakeng sa thepa ea nylon. Lingoliloeng li tlaleha hore tlatsetso ea karolo ea 10% ea boima ba MCA ho nylon 6, nylon 66 kapa metsoako ea bona e ka fihlela UL94 V-0 flame retardant standard.
Mochine o thibelang malakabe
Ka kakaretso ho lumeloa hore li-retardants tsa nitrogen flame li na le tšekamelo ea ho ntša likhase tse sa cheng tse kang ammonia, nitrogen, nitrogen oxides tse tebileng le mouoane oa metsi ha li senngoa ke mocheso. Ho hlahisoa ha likhase tsena le ho bola ha lintho tse thibelang lelakabe ho monya boholo ba mocheso, ho fokotsa haholo mocheso oa holim'a polymer.
'Me likhase tsena tse sa cheng, tse kang naetrojene, ha li na karolo feela ho hlapolla oksijene moeeng le mahloriso a likhase tse tukang tse hlahisoang ke ho bola ha mocheso oa li-polymers, empa hape li itšoara ka oksijene moeeng ho hlahisa naetrojene, metsi le li-oxide tse tebileng, tse jang oksijene holim'a thepa ha li ntse li finyella phello e ntle ea ho thibela mollo.
Melemo e thibelang malakabe
- Chefo e tlase
Liteko tsa baeloji li bonts'a hore index ea chefo ea li-halogen flame retardants tse hlokahalang ho fihlela ts'ebetso e ts'oanang e thibelang lelakabe ke makhetlo a mahlano ho feta ea li-retardants tsa naetrojene, 'me ho ntšoa ha mosi oa thepa ea polymer e sebelisoang ka nitrogen flame retardants e tlase, ea bobeli ho ea ho li-fillers tse sa sebetseng ka har'a tšepe. Ka ho khetheha, mosi oa mosi qalong ea mollo o monyenyane, o fa batho monyetla oa ho baleha le ho nolofatsa mosebetsi oa ho loantša mollo qalong.
- Bokhoni bo phahameng ba ho thibela mollo
Ka li-halides, li-oxide tsa tšepe, li-flame retardants tsa phosphate, li-hydrate tsa inorganic, metsoako ea hydroxyl, li-borides, silicates, metsoako ea carbonate, metsoako ea naetrojene e nang le nako ea ho khantša le tekanyo ea exothermic ea teko e bontša hore katleho ea naetrojene e thibelang mollo ke eona e phahameng ka ho fetisisa.
- E sa senyeheng hanyane
- Likhase tse hlahisoang ke metsoako e nang le naetrojene nakong ea mollo li senya haholo 'me ha li na phello e kholo ea ho senya lihlahisoa tsa motlakase. Liteko li bontšitse hore li-conductors tsa motlakase tse nang le naetrojene kapa lisebelisoa tsa motlakase li ka tsoela pele ho sebelisoa kamora mollo.
- Ha ho likhohlano le li-stabilizers tse bobebe ka thepa
Li-retardants tse thehiloeng ho naetrojene ha li na lihlopha tse ka hlahisang li-radicals tsa mahala habonolo joalo ka halides, ka hona ha li sebelise li-stabilizers tsa leseli linthong tse ling.
- Mocheso o phahameng oa ho bola oa mocheso
Ha ho hlokahale hore u tšoenyehe ka ho senyeha ha lelakabe ho thibelang mollo nakong ea ts'ebetso ea thepa, e leng se ka lebisang ho hloleheng ha lelakabe ho thibela mollo. Thepa e boloka thepa e ntle ea mochini le ho lieha ha lelakabe esita le ka mor'a ho fetisoa ke extruder e nang le liphello tse ngata.
- E botsoalle tikolohong
Litšila ha li bake tšilafalo ea tikoloho.
Tlhahisoleseding e batsi kapa disampole tsa mahala kapa ditheko tse qotsitsoeng, ka kopo ikopanye le rona ka imeile: [email protected] , kapa o re bolelle ho: +86-28-8411-1861.
Lits'oants'o tse ling le litemana li hlahisoa hape ho tsoa Marang-rang, 'me litokelo tsa molao ke tsa mongoli oa pele. Haeba ho na le tlolo ea molao, ka kopo ikopanye le rona ho hlakola.