Ntụaka ire ọkụ retardant usoro maka SK Polyester ES500 (UL94 V0 rating).
I. Usoro nhazi usoro
- Ndakọrịta nke mkpụrụ osisi
- SK Polyester ES500: Polyester Thermoplastic nwere ọnọdụ nhazi nke 220-260C. Ihe na-egbochi ire ọkụ ga-anagide oke okpomọkụ a.
- Ihe ndị achọrọ: Nhazi ire ọkụ (V0), ihe eji arụ ọrụ (ike ike / mmetụta), na nhazi mmiri.
- Sistemụ Retardant Synergistic Flame Retardant
- Ultrafine Aluminum Hydroxide (ATH): Ihe na-egbochi ire ọkụ nke mbụ, akpịrị ịkpọ nkụ endothermic. Nbudata ga-edozi nkwụghachi ọkụ na akụrụngwa akụrụngwa.
- Aluminom Hypophosphite: Char-forming synergist, na-arụ ọrụ na ATH iji mepụta phosphorus-aluminom synergistic mmetụta, na-eme ka mma cha cha.
- Zinc Borate: Char enhancer, na-egbochi anwụrụ ọkụ, ma mepụta nnukwu mgbochi na ATH.
- MCA (Melamine Cyanurate): Ọkụ na-egbochi ọkụ, na-agbaze oxygen ma na-egbochi ịgbaze mmiri.
II. Nhazi akwadoro (pasent ibu)
| Akụkụ | Oke | Ndetu nhazi |
|---|---|---|
| SK Polyester ES500 | 45-50% | Resin ntọala; họrọ ọkwa mmiri dị elu iji kwụọ ụgwọ viscosity ndochi. |
| Ultrafine ATH | 25-30% | Emezigharịrị ihu ya na onye nnọchi anya njikọ silane (KH-550), D50 <3 μm. |
| Aluminom hypophosphite | 10-12% | Okpomọkụ na-eguzogide (> 300°C), agwakọta ya na ATH wee gbakwunye ya na nkebi. |
| Zinc borate | 6–8% | Agbakwunyere ya na MCA ka ịzenarị mbibi ihe nhazi dị elu. |
| MCA | 4–5% | Usoro okpomọkụ <250°C, obere-ọsọ mgbasa. |
| na-ekesa | 2–3% | Polyester-dakọtara dispersant (dịka, BYK-161) + polyethylene wax mejupụtara. |
| Onye nnọchi anya njikọta (KH-550) | 1% | Tupu-agwọ ATH na aluminom hypophosphite; imi ethanol sochiri ihicha. |
| Ihe mgbochi mgbochi mmiri | 0.5-1% | PTFE micropowder iji gbochie mgbaze gbazee. |
| Enyemaka nhazi | 0.5% | Zinc stearate (nnukwu mmanu na mgbochi mmagide). |
III. Njikwa usoro igodo
- Nkwalite mgbasa ozi
- Ọgwụgwọ mbụ: gbanye ATH na aluminom hypophosphite na 1% KH-550 ethanol ngwọta maka awa 2, wee kpoo na 80 ° C.
- Usoro ngwakọta:
- Base resin + dispersant + onye na-ejikọta ọnụ → Ngwakọta ọsọ dị ala (500 rpm, 5 min).
- Tinye gbanwetụrụ ATH / aluminom hypophosphite → Ọsọ ọsọ dị elu (2500 rpm, 20 min).
- Tinye zinc borate/MCA/PTFE → Ngwakọta ọsọ dị ala (800 rpm, 10 min).
- Akụrụngwa: Twin-screw extruder (mpaghara okpomọkụ: mpaghara nri 200°C, mpaghara agbaze 230°C, anwụ 220°C).
- Na-ahazi njikwa okpomọkụ
- Gbaa n'ihu na okpomọkụ gbazee <250°C iji gbochie ire ere MCA (MCA na-emebi na 250-300°C).
- Pellets mmiri dị jụụ mgbe extrusion gasịrị iji gbochie mbugharị ire ọkụ.
IV. Usoro Mmekọ nke Ọkụ Retardant
- ATH + Aluminom Hypophosphite
- ATH na-amịkọrọ okpomọkụ ma na-ahapụ ikuku mmiri, na-agbaze gas na-ere ọkụ.
- Aluminom hypophosphite na-eme ka nhazi cha cha (AlPO₄), na-egbochi nnyefe ọkụ.
- Zinc Borate + MCA
- Zinc borate na-etolite ihe mgbochi enyo n'elu mgbawa cha cha.
- MCA na-emebi emebi ịhapụ NH₃, na-agbaze oxygen na igbochi mmeghachi omume radical free.
- PTFE Anti-dripping
- PTFE micropowder na-etolite netwọk fibrous, na-ebelata ihe egwu mgbaze-drip.
V. Ntụgharị arụmọrụ & Nchọpụta nsogbu
| Okwu nkịtị | Ngwọta |
|---|---|
| Ọnwụ anwụ n'okpuru V0 (V1/V2) | Dịkwuo aluminom hypophosphite ka 12% + MCA na 5%, ma ọ bụ tinye 2% red phosphorus (syncergistic na aluminum hypophosphite). |
| Ihe eji arụ ọrụ belatara | Belata ATH ka ọ bụrụ 25%, tinye 5% fiber glass fiber (nkwado) ma ọ bụ 3% maleic anhydride-grafted POE (na-esi ike). |
| Mmiri nhazi nhazi adịghị mma | Mụbaa ihe na-ekesa na 3%, ma ọ bụ tinye 0.5% polyethylene wax (nnukwu mmanu mmanu). |
| N'elu na-eto eto | Kwalite usoro onunu ogwu ma ọ bụ gbanwee gaa na titanate coupling agent (NDZ-201) maka njikọ ihu ọma ka mma. |
VI. Usoro nkwado
- Nnwale UL94 V0:
- Ihe atụ 1.6 mm na 3.2 mm, ngụkọta oge ọkụ <50 sk mgbe ọkụ ọkụ abụọ gasịrị, enweghị mgbanye ọkụ.
- LOI: Ebumnuche ≥30% (ezigbo ≥28%).
- Ngwongwo igwe:
- Ike tensile> 40 MPa, ike mmetụta> 5 kJ/m² (ASTM ọkọlọtọ).
- Nkwụsi ike nke okpomọkụ (TGA):
- Char foduru na 800°C> 20%, mmalite ire ere okpomọkụ> 300°C.
VII. Ụdị ntụaka ihe atụ
| Akụkụ | Ọdịnaya (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (gbanwere) | 28% |
| Aluminom hypophosphite | 11% |
| Zinc borate | 7% |
| MCA | 4% |
| BYK-161 na-ekesa | 2.5% |
| Onye nnọchi anya njikọ KH-550 | 1% |
| Ihe nnọchi anya mgbochi PTFE | 0.8% |
| Zinc Stearate | 0.5% |
Usoro a na nhazi usoro a nke ọma nweta UL94 V0 ire ọkụ maka SK Polyester ES500 ka ị na-edozi nhazi na akụrụngwa. A na-atụ aro nnwale ndị pere mpe iji nyochaa mgbasasa tupu oke ngbanwe dị mma (dịka ọmụmaatụ, ituzizi hypophosphite aluminom na MCA). Maka nkwalite nkwụghachi ọkụ n'ihu, tụlee ịgbakwunye 2% boron nitride nanosheets (BNNS) dị ka ihe ndochi ọkụ na-arụ ọrụ nke ọma / ire ọkụ.
More info., pls contact lucy@taifeng-fr.com
Oge nzipu: Jul-01-2025
