Mefuta e Sireletsang ea Phofo ea Polyurethane AB e Khomaretsang

Mefuta e Sireletsang ea Phofo ea Polyurethane AB e Khomaretsang
Ho latela tlhoko ea liforomo tsa halogen-flame retardant bakeng sa likhomaretsi tsa polyurethane AB, hammoho le litšobotsi le litlamorao tsa tšebelisano-'moho ea li-retardant tsa malakabe tse kang aluminium hypophosphite (AHP), aluminium hydroxide (ATH), zinc borate, le melamine cyanurate (MCA), merero e meraro e latelang ea ho kopanya e entsoe. Liforomo tsena ha li na chlorine 'me li shebane le ho ntlafatsa katleho ea li-retardant tsa malakabe, ho lumellana ha ts'ebetso ea' mele, le ho khoneha ha ts'ebetso:

1. Sebopeho sa ho Thibela ho Lakatseha ha Lelakabe le Leholo (Bakeng sa ho kenya dipitsa ka elektroniki, ho kenya betri ka hare, sepheo sa UL94 V-0)

Motsoako o Sireletsang Mollo oa Motheo:

• Aluminium hypophosphite (AHP): 8-12 phr (mofuta o koahetsoeng ka polyurethane o tsamaisoang ke metsi o khothaletsoa ho rarolla mathata a pula)
• Aluminium hydroxide (ATH): 20-25 phr (sehlopha sa submicron, 0.2-1.0 μm, ho ntlafatsa index ea oksijene le ho kopana ha char)
• MCA: 5-8 phr (mokhoa oa mohato oa khase, o sebelisanang le AHP mohatong o khutsufalitsoeng)
• Zinc borate: 3-5 phr (e khothalletsa ho thehoa ha char ea ceramic le ho thibela ho kubella ha mosi)

Tshebetso e Lebelletsweng:

• Tekanyetso ea oksijene (LOI): ≥32% (PU e hloekileng ≈22%);
• Tekanyetso ea UL94: V-0 (botenya ba 1.6 mm);
• Ho tsamaisa mocheso: 0.45-0.55 W/m·K (e kentsweng ke ATH le zinc borate);
• Taolo ea ho thibana ha metsi: 25,000-30,000 cP (phekolo ea bokaholimo e hlokahala ho thibela ho senngoa ha mobu).

Ts'ebetso ea Bohlokoa:

• AHP e tlameha ho qhalanngoa pele ho nako karolong ea polyol (Karolo ea A) ho qoba karabelo ea pele ho nako ka isocyanate (Karolo ea B);
• ATH e lokela ho fetoloa ka sesebelisoa sa ho kopanya sa silane (mohlala, KH-550) ho ntlafatsa kamano ea interfacial.

2. Sebopeho se Akaretsang sa Theko e Tlase (Bakeng sa ho tiisa kaho, ho kopanya thepa ea ka tlung, sepheo sa UL94 V-1)

Motsoako o Sireletsang Mollo oa Motheo:

• Aluminium hydroxide (ATH): 30-40 phr (e tloaelehileng ea micron-grade, e theko e tlaase, e thibelang malakabe a mofuta oa filler);
• Ammonium polyphosphate (APP): 10-15 phr (e kopantsoe le MCA bakeng sa sistimi e kenang ka hare ho mobu, e nkang sebaka sa li-halogenated agents);
• MCA: 5-7 phr (karolelano ho APP 1:2~1:3, e khothalletsa ho foamela le ho arohana ha oksijene);
• Zinc borate: 5 phr (ho thibela mosi, ho thehoa ha char e thusang).

Tshebetso e Lebelletsweng:

• LOI: ≥28%;
• Tekanyetso ea UL94: V-1;
• Phokotso ea litšenyehelo: ~30% (ha e bapisoa le mokhoa oa ho thibela ho chesa haholo);
• Ho boloka matla a ho thapolla: ≥80% (APP e hloka ho kenngoa ka har'a capsule ho thibela hydrolysis).

Ts'ebetso ea Bohlokoa:

• APP e tlameha ho kenngoa ka har'a capsule e nyane (mohlala, ka resin ea melamine-formaldehyde) ho qoba ho monngoa ha mongobo le ho thehoa ha lipululana;
• Kenya silica e fumed e nang le hydrophobic e 1-2 phr (mohlala, Aerosil R202) bakeng sa ho thibela ho tsitsa.

3. Sebopeho se Bonolo sa Ts'ebetso e Tlase (Bakeng sa ho kopanya ka nepo lisebelisoa tsa elektroniki, ho hloka phallo e phahameng)

Motsoako o Sireletsang Mollo oa Motheo:

• Aluminium hypophosphite (AHP): 5-8 phr (e boholo ba nanosized, D50 ≤1 μm);
• Phosphorus e metsi e thibelang lelakabe (mofuta o mong oa BDP): 8-10 phr (mohlala, metsoako ea DMMP e se nang phosphorus e thehiloeng ho eona, e bolokang viscosity);
• Aluminium hydroxide (ATH): 15 phr (e chitja ea alumina e kopantsoeng, e leka-lekanyang conductivity ea mocheso);
• MCA: Li-phr tse 3-5.

Tshebetso e Lebelletsweng:

• Mefuta ea ho teteana: 10,000-15,000 cP (e haufi le litsamaiso tsa metsi tse thibelang malakabe);
• Ho thibela malakabe: UL94 V-0 (e ntlafalitsoe ke phosphorus e metsi);
• Ho tsamaisa mocheso: ≥0.6 W/m·K (e tlatsetsoang ke alumina e chitja).

Ts'ebetso ea Bohlokoa:

• AHP le alumina e chitja li lokela ho kopanngoa 'me li hasane tlas'a ho kuta ho phahameng (≥2000 rpm);
• Kenya desiccant ea sefe ea limolek'hule ea 4-6 phr ho Karolo ea B ho thibela ho monngoa ha mongobo oa AHP.

4. Lintlha tse Kopanyang tsa Tekheniki le Litharollo tse Ling

1. Mekhoa ea Ts'ebelisano-'moho:

• AHP + MCA:AHP e khothalletsa ho felloa ke metsi 'meleng le ho chesa, ha MCA e ntša khase ea naetrojene ha e futhumatsoa, ​​e leng se etsang lera la char le kang la mahe a linotši.
• ATH + borate ea zinki:ATH e monya mocheso (1967 J/g), mme zinc borate e etsa lera la khalase ya borate ho kwahela bokahodimo.

2. Lintho tse ling tse thibelang malakabe:

• Li-derivative tsa Polyphosphate:E sebetsa hantle haholo ebile e sireletsa tikoloho, ka tšebeliso ea HCl ea sehlahisoa se seng;
• Resin ea silicone ea epoxy (ESR):Ha e kopantsoe le AHP, e fokotsa mojaro o felletseng (18% bakeng sa V-0) mme e ntlafatsa thepa ea mechini.

3. Taolo ea Likotsi tsa Ts'ebetso:

• Ho senngoa ha mashala:Disebediswa tse thibelang ho tsitsa (mohlala, mefuta e fetotsweng ke polyurea) di a hlokahala haeba viscosity e ka tlase ho 10,000 cP;
• Ho phekola thibelo:Qoba lintho tse thibelang malakabe a alkaline haholo (mohlala, MCA) ho thibela tšitiso ea liketso tsa isocyanate.

5. Litlhahiso tsa ho Kena Ts'ebetsong

• Etelletsa pele ho leka mokhoa oa ho thibela mollo o matla: AHP e koahetsoeng + submicron ATH (boholo ba karolelano ea likaroloana 0.5 μm) ho AHP:ATH:MCA = 10:20:5 bakeng sa ntlafatso ea pele.
• Liteko tsa bohlokoa:
  → LOI (GB/T 2406.2) le ho tjhesa ho otlolohileng ha UL94;
  → Matla a tlamo kamora ho potoloha ha mocheso (-30℃ ~ 100℃, lihora tse 200);
  → Pula e thibelang malakabe ka mora ho tsofala ka potlako (60℃/7d).

Tafole ea ho Lokisa e Sireletsang Lelakabe