Nitrogen na-egbochi ire ọkụ
Isiokwu a lekwasịrị anya na melamine na ihe ndị sitere na ya, ụfọdụ n'ime ha enwere ike iji naanị ha ma ọ bụ bụ isi ihe ndị na-egbochi ọkụ intumescent. Ihe ndị a na-egbochi ọkụ anaghị enwe halogen, anaghị enwe obere anwụrụ ọkụ, anaghị enwe okpomọkụ na ọkụ, ha na-arụkwa ọrụ nke ọma na obere ọnụ ahịa. Nsogbu dị na ha bụ na plastik ha ji eme ka ọkụ ghara ịdị ike nhazi ma na-agbasa nke ọma na ihe ndabere. Ihe achọrọ maka nha na nkesa nha nke ihe ndị a siri ike karịa ma mgbe ụfọdụ a chọrọ ihe ndị na-arụ ọrụ ọnụ. Na mgbakwunye na melamine, enwerekwa melamine cyanurate (MCA) , phosphates, borates, nnu guanidine, nnu dicyandiamide, wdg. A na-eji ihe ndị a na-egbochi ọkụ na PA, PU na PO. Enwere ike iji ha na PA, PU, PO, PET, PS, PVC na epoxy resins, ha dịkwa mma maka ákwà, agba, osisi na akwụkwọ.
Otu n'ime isi ojiji nke ogige ndị nwere nitrogen dị ka ọkụ na-eme ka ọkụ na-ejikọta ya na ihe ndị na-eme ka ọkụ nwere phosphorus iji nweta mmetụta nke phosphorus-nitrogen synergistic. Ngwakọta nke ogige ndị nwere nitrogen na ihe ndị nwere phosphorus nwere mmetụta dị elu nke ọkụ na-eme ka ọ dị elu na cellulose karịa nchikota nke mmetụta ọkụ na-eme ka ọkụ nke onye ọ bụla. Nitrogen na-akwalite phosphorylation nke cellulose site na phosphoric acid ma si otú a na-enye aka na ọzịza ọkụ na-egbochi mmetụta. Ya mere, ihe ndị na-arụ ọrụ nke ọtụtụ ihe na-egbochi ire ọkụ bụ phosphorus na nitrogen.
Melamine
Melamine (MA) anaghị ere ọkụ, na-adị mfe karị mgbe ọ na-ekpo ọkụ, na-erekwa ere mgbe ọkụ dị ọkụ. Ihe kpatara ya ji bụrụ ezigbo ọkụ retardant bụ:
- Mmeghachi omume nbibi na-eme na 250 ruo 450 Celsius, na-etinye nnukwu okpomọkụ ma na-enye amonia iji mepụta condensates dị iche iche;
- Ikike nke imetụta àgwà agbaze nke ihe ahụ ma mee ka ọ na-adọrọ adọrọ na coke.
Melamine adịghị ọnụ, anaghị emebi emebi, anaghị akpasu iwe na akpụkpọ ahụ na anya, ọ bụghịkwa mutagen. Ihe ọghọm ya bụ na ọ na-emepụta cyanide na-egbu egbu mgbe ọ na-ere ya na okpomọkụ dị elu.
Melamine bụ ihe na-egbochi ire ọkụ nke a na-ejikarị eme ihe, ọkachasị dịka akụkụ nke ire ọkụ na-ere ọkụ yana maka polyurethane na resins triazine ire ọkụ. Eji ya na mmiri mmiri phosphate esters mee ihe, a na-eji melamine eme ihe n'ọtụtụ ebe iji kpoo ụfụfụ polyurethane ọkụ.
Melamine cyanurate
Melamine cyanurate na-emepụta site na ime melamine na cyanuric acid, nke a na-akpọ MCA. Ọ bụ mmanu na ire ere, ntụ ntụ kristal na-acha ọcha, enweghị isi na enweghị ụtọ. Ọ kwụsiri ike nke ukwuu n'okpuru 300 Celsius ma malite ịgbawa gburugburu 350 Celsius, mana ọ naghị ere ere, ire ere ya dị ihe dịka 440 ~ 450 Celsius. MCA nwere ọdịnaya nitrogen dị elu, dị nnọọ mfe ịmịkọrọ mmiri, mmiri ọkụ dị elu n'ime unyi, gas nitrogen na-ere ọkụ, na-atụgharị uche nke oxygen na polymer decomposition nke gas na-emepụta. Ọzọkwa, ọgbọ nke gas na ikpo ọkụ na-ekpo ọkụ na-ewepụ akụkụ nke okpomọkụ, si otú a na-enye ọrụ na-ere ọkụ.
A na-eji MCA eme ihe na rọba, naịlọn, resin phenolic, resin epoxy, emulsion acrylic na resin olefin ndị ọzọ. A na-eji MCA dị ka ihe na-egbochi ọkụ maka resin epoxy. A na-abawanye ọnụọgụ ikuku oxygen site na 24% ruo 28% ruo 46% ruo 48% yana ọ dabara adaba maka akụrụngwa ọkụ na akụkụ ọkụ ọkụ. A na-agbakwunye ya na vinyl acetate emulsions, acrylate emulsions na rubber emulsions iji mee ihe mkpuchi ọkụ na-eme ka ọkụ na-eme ka ọ bụrụ ihe na-egbuke egbuke na-egbuke egbuke, na-enweghị mmetọ agba.
MCA bụ ihe na-egbochi ire ọkụ triazine nke nwere ezigbo ihe onwunwe, ojiji ya ma ọ bụ ịgwakọta ya na ihe ndị ọzọ na-egbochi ire ọkụ dịkwa irè karịa iji melamine naanị ya.
Melamine phosphonates
Enwere ike ịkwadebe phosphonates melamine site na melamine na monophenylphosphonic acid. Ihe ọghọm dị na ya bụ na ọ siri ike ịkwadebe na igbochi ya ka ọ ghara ịfụ ụfụ mgbe ị na-ejikọta ya na polyolefins, a na-eme ihe na-ekpo ọkụ. Nke a na-egbochi ire ọkụ nwekwara ike ibute mmetọ agba. A na-eji ya eme ihe dị ka ihe na-egbochi ọkụ maka polyolefins na polystyrene.
Melamine pyrophosphate
Enwere ike imepụta melamine pyrophosphate site n'ịgwọ melamine na phosphoric acid wee kpoo ya na 250-270 Celsius. Enwere ọtụtụ ihe na-egbochi ire ọkụ maka fiber, textiles na ụfọdụ plastik, mana mmetụta na-egbochi ire ọkụ na plastik polyurethane adịghị afọ ojuju, ebe enwere ike iji melamine pyrophosphate mee ihe nke ọma iji mee ka plastik polyurethane retard ire ọkụ. Polypropylene na-egbochi ire ọkụ site na ngwaahịa mmeghachi omume ya nwere pentaerythritol ma ọ bụ ngwaahịa mmeghachi omume ya nwere pentaerythritol na phosphoric acid nwekwara ike mepụta ihe na-adịghị ere ọkụ, nke na-adịghị agbapụta cha cha.
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