Ntlafatso ea Tlhahiso ea HTPB, CTBN le DDI (Dimeryl Diisocyanate)
Ke eng HTTPB ?
HTTPB tse tsejoang hape e le polybutadiene e fedisitsweng ke hydroxyl (Nomoro ea CAS. 69102-90-5), ke rabara e ncha ea metsi (resin), HTPB e na le lihlopha tsa hyroxyl tse arabelang. E ka arabela ka moemeli oa katoloso ea ketane, moemeli oa ho hokahanya mochesong oa kamore kapa mochesong o phahameng ho hlahisa sebopeho sa marang-rang a 3D sa litaba tse folisang tse nang le thepa e ntle ea mechini.
Litšobotsi tsa ts'ebetso tsa HTPB ke: Hydrophobicity, Lihlopha tsa hyroxyl tse arabelang, Mocheso o tlase oa phetoho ea khalase, 'Mala o tlase - mokelikeli o hlakileng haholo o nang le viscous, Ho hanyetsa hydrolysis,
Ho hanyetsa mocheso o tlase, Ho kenella ha mongobo o tlase, Ho hanyetsa li-acid le metheo ea metsi, Ho hanyetsa ho tsofala ho matla, Ho khomarela hantle mefuta e fapaneng ea substrates, Thepa ea ho thibela motlakase, Thepa e ntle ea mechini e etsa hore e sebelisoe haholo ho:
- Liaparo
- Likhomaretsi
- Li-propellant
- Thepa ea polyurethane (PU)
- Litlamo
- Litiiso
- Thepa ea ho thibela mocheso ea motlakase
- Lihlahisoa tsa rabara
- Thepa ea mohaho ka har'a likoloi le lifofane
- Thepa ea moaho (e sa keneleng metsi, e thibelang mafome, e thibelang mocheso)
- Ho kenya lipitsa le ho li koahela
- Phetoho ea Polymer
- le mefuta e meng e mengata ea tšebeliso.
Ke eng CTBN ?
CTBN hape o tseba jwalo ka Copolymer ea butadiene-acrylonitrile e felisitsoeng ke carboxyl ( CAS No. 25265-19-4 kapa 68891-46-3), sehlopha sa carboxyl e le sehlopha sa sona sa mosebetsi, se ka sebelisoa ka kakaretso libakeng tsa lifofane le tsa indasteri ea sechaba. Ka lebaka la sehlopha se sebetsang se felisitsoeng ke carboxyl, se ka arabela ka resin ea epoxy ho ntlafatsa ho tiea ha sona.
Litšobotsi tsa CTBN ke: E ntlafatsa ho tiea le ho tenyetseha ha li-resin tsa thermoset, E ntlafatsa ho khomarela li-substrate tse thata ho hokahanngoa le tsona, E eketsa ho hanyetsa tšusumetso le mapetso, E ntlafatsa ho tšoarella (ho hanyetsa mokhathala), E eketsa thepa ea mechini ea mocheso o tlase, jj. e etsa hore e sebelisoe haholo ho:
1. Likhomaretsi, ho kopanya, ho tiisa, ho fafatsa, ho kenya lipitsa (sebaka sa lifofane, likoloi, motlakase/lisebelisoa tsa elektroniki, indasteri, likepe le lits'ebetso tsa kaho..)
2. Liaparo (tharollo, phofo, metsi)
3. CTBN ke ho tiea ha resin ea epoxy, 'me ke sesebelisoa se setle sa ho feto-fetoha ha resin bakeng sa thermosetting joalo ka epoxy, phenolic, polyester e sa tlalang le resin e utloang khanya.
Ke eng CHE ?
CHE hape o tseba jwalo ka Dimeryl Diisocyanate CAS No. 68239-06-5, DDI ke diisocyanate e ikhethang ea aliphatic e ka sebelisoang ho lokisa li-polymer tse nang le metsoako e nang le haedrojene e sebetsang. Ke motsoako oa ketane e telele o nang le mokokotlo oa mafura a 36-carbon dimer. Sebopeho se seholo sa ketane se fa DDI ho tenyetseha ho hoholo, ho hanyetsa metsi le chefo e tlase ho li-isocyanate tse ling tsa aliphatic. DDI ke mokelikeli o nang le viscosity e tlase o qhibilihang habonolo lithakong tse ngata tsa polar kapa tse seng tsa polar. Hobane ke aliphatic isocyanate, e na le litšobotsi tsa ho se be mosehla. E na le melemo e mengata ea chefo e tlase, e bonolo ho e sebelisa, e qhibilihang lithakong tse ngata, nako ea karabelo e laoloang le kutloisiso e tlase ea metsi. Ke mofuta o tloaelehileng oa isocyanate e ikhethang e tala e ka nchafatsoang, e ka sebelisoang haholo ho phetheng lesela, li-elastomer, likhomaretsi le li-sealant, liphahlo, li-enke le masimo a mang a sesole le a sechaba.
Re ntlafalitse tlhahiso ea HTPB, CTBN le DDI (Dimeryl Diisocyanate) ho ntlafatsa ts'ebetso ea tsona, le ho etsa hore litheko li be le tlholisano e kholo ha li bapisoa le Poly BD R45 HTLO, Huntsman 1300X13 (Hypro 1300X13 CTBN).
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