Usoro ihe eji eme ka ntụ ntụ Polyurethane AB na-arapara ọkụ

Usoro ihe eji eme ka ntụ ntụ Polyurethane AB na-arapara ọkụ
Dabere na ọchịchọ maka usoro ihe eji egbochi ọkụ na-enweghị halogen maka ihe nrapado polyurethane AB, yana njirimara na mmetụta synergistic nke ihe nrapado ọkụ dịka aluminum hypophosphite (AHP), aluminum hydroxide (ATH), zinc borate, na melamine cyanurate (MCA), a haziri atụmatụ ihe atọ ndị a. Usoro ndị a enweghị chlorine ma lekwasị anya na ime ka arụmọrụ ihe nrapado ọkụ dịkwuo mma, ndakọrịta arụmọrụ anụ ahụ, na ohere usoro:

1. Usoro Nkwụsị Ọkụ Dị Elu (Maka ite eletrọniki, mkpuchi batrị, ihe mgbaru ọsọ UL94 V-0)

Nchikota ihe mgbochi ọkụ nke isi:

• Aluminom hypophosphite (AHP): 8-12 phr (ụdị a na-atụ aro ka e jiri polyurethane kpuchie mmiri iji dozie nsogbu mmiri ozuzo)
• Aluminom hydroxide (ATH): 20-25 phr (ọkwa submicron, 0.2-1.0 μm, iji mee ka ntinye oxygen na ike ikuku dị elu)
• MCA: 5-8 phr (usoro nke gas-phase, synergistic na AHP n'ime usoro nke a kpọchiri akpọchi)
• Zinc borate: 3-5 phr (na-akwalite nhazi seramiiki ma na-egbochi anwụrụ ọkụ)

Arụmọrụ a tụrụ anya ya:

• Ndekọ Oxygen (LOI): ≥32% (PU dị ọcha ≈22%);
• Ọkwa UL94: V-0 (ọkpụrụkpụ 1.6 mm);
• Ọkwa okpomọkụ: 0.45-0.55 W/m·K (nke ATH na zinc borate nyere aka);
• Njikwa Viscosity: 25,000-30,000 cP (a chọrọ ọgwụgwọ elu iji gbochie nsị).

Usoro Isi:

• A ga-agbasa AHP tupu oge eruo n'ime ihe mejupụtara polyol (Nkebi A) iji zere mmeghachi omume tupu oge eruo na isocyanate (Nkebi B);
• A ga-eji ihe njikọ silane (dịka ọmụmaatụ, KH-550) gbanwee ATH iji mee ka njikọ dị n'etiti ihu dịkwuo mma.

2. Usoro izugbe dị ọnụ ala (Maka mkpuchi ihe owuwu, njikọ arịa ụlọ, ihe mgbaru ọsọ UL94 V-1)

Nchikota ihe mgbochi ọkụ nke isi:

• Aluminom hydroxide (ATH): 30-40 phr (ihe na-egbochi ire ọkụ nke ụdị micron nkịtị, nke na-adịghị efu ọnụ, nke na-emeju ihe njupụta);
• Ammonium polyphosphate (APP): 10-15 phr (ejikọtara ya na MCA maka sistemụ intumescent, na-anọchi ihe ndị na-eme ka halogen dị ọcha);
• MCA: 5-7 phr (nhazi ya na APP 1:2~1:3, na-akwalite ịfụ ụfụfụ na mwepụ oxygen);
• Zinc borate: 5 phr (mbelata anwụrụ ọkụ, nhazi ike enyemaka).

Arụmọrụ a tụrụ anya ya:

• LOI: ≥28%;
• Ọkwa UL94: V-1;
• Mbelata ọnụ ahịa: ~30% (ma e jiri ya tụnyere usoro ire ọkụ dị elu);
• Ijide ike nrụgide: ≥80% (APP chọrọ mkpuchi iji gbochie hydrolysis).

Usoro Isi:

• A ga-etinyerịrị APP n'ime obere ihe (dịka ọmụmaatụ, na resin melamine-formaldehyde) iji zere ịmịkọrọ mmiri na ịmepụta afụ;
• Tinye 1-2 phr hydrophobic fumed silica (dịka ọmụmaatụ, Aerosil R202) maka igbochi nsogbu.

3. Usoro nhazi dị mfe maka obere viscosity (Maka njikọ eletrọniki ziri ezi, chọrọ nnukwu mbugharị)

Nchikota ihe mgbochi ọkụ nke isi:

• Aluminom hypophosphite (AHP): 5-8 phr (nke nha ya bụ nanos, D50 ≤1 μm);
• ihe na-egbochi ire ọkụ phosphorus organic mmiri mmiri (nhọrọ BDP): 8-10 phr (dịka ọmụmaatụ, ihe ndị sitere na DMMP nke na-enweghị phosphorus na halogen, na-ejigide viscosity);
• Aluminom hydroxide (ATH): 15 phr (ihe mejupụtara alumina gbara okirikiri, nke na-edozi ike okpomọkụ);
• MCA: 3-5 phr.

Arụmọrụ a tụrụ anya ya:

• Oke viscosity: 10,000-15,000 cP (dị nso na sistemụ ihe na-egbochi ire ọkụ mmiri);
• Nkwụsị ire ọkụ: UL94 V-0 (nke phosphorus mmiri mmiri na-eme ka ọ dịkwuo mma);
• Ọgbakọ okpomọkụ: ≥0.6 W/m·K (nke alumina gbara okirikiri nyere aka).

Usoro Isi:

• A ga-agwakọta AHP na alumina gbara okirikiri ma gbasaa ha n'okpuru akwa dị elu (≥2000 rpm);
• Tinye ihe na-esi ísì mmiri 4-6 phr na Akụkụ B iji gbochie mmiri AHP ịbanye.

4. Ịgwakọta Isi Nkà na ụzụ na Ngwọta Ndị Ọzọ

1. Usoro Mmekọrita:

• AHP + MCA:AHP na-akwalite mmiri ịkpọ nkụ na ịgbaze, ebe MCA na-ewepụta gas nitrogen mgbe ọ na-ekpo ọkụ, na-emepụta oyi akwa cha dị ka mmanụ aṅụ.
• ATH + Zinc borate:ATH na-amịkọrọ okpomọkụ (1967 J/g), zinc borate na-akpụkwa oyi akwa iko borate iji kpuchie elu ya.

2. Ihe ndị ọzọ na-egbochi ire ọkụ:

• Ihe ndị sitere na Polyphosphazene:Ọ dị irè nke ukwuu ma dịkwa mma maka gburugburu ebe obibi, yana ojiji HCl sitere na ngwaahịa;
• Resin silicone Epoxy (ESR):Mgbe ejikọtara ya na AHP, ọ na-ebelata ibu zuru oke (18% maka V-0) ma na-eme ka njirimara igwe ka mma.

3. Njikwa Ihe Ize Ndụ Usoro:

• Nkwụsị:ihe ndị na-egbochi nsogbu (dịka ọmụmaatụ, ụdị polyurea gbanwere) achọrọ ma ọ bụrụ na viscosity erughi 10,000 cP;
• Mgbochi ọgwụgwọ:Zere ihe ndị na-egbochi ọkụ alkaline gabiga ókè (dịka ọmụmaatụ, MCA) iji gbochie nnyonye anya na mmeghachi omume isocyanate.

5. Ndụmọdụ Mmejuputa

• Mee ka nnwale nke usoro retardancy ọkụ dị elu buru ụzọ: AHP + submicron ATH a kpụchara akpụcha (nkezi nha ihe dị ka 0.5 μm) na AHP:ATH:MCA = 10:20:5 maka nhazi mbụ.
• Ule ndị dị mkpa:
  → LOI (GB/T 2406.2) na UL94 ọkụ kwụ ọtọ;
  → Ike njikọ mgbe ịgbagharị okpomọkụ gasịrị (-30℃~100℃, awa 200);
  → Mmiri mmiri na-egbochi ire ọkụ mgbe ịka nká ngwa ngwa (60℃ / 7d).

Tebụl Nhazi Ihe Mgbochi Ọkụ