Nhazi Halogen-Free Flame Retardant na Teknụzụ Nhazi maka Resin Epoxy
Onye ahịa na-achọ ihe na-eme enyi gburugburu ebe obibi, halogen na-enweghị halogen, na ọkụ na-adịghị arọ nke ọla dị mma maka resin epoxy nwere usoro ọgwụgwọ anhydride, na-achọ nnabata UL94-V0. Onye na-agwọ ọrịa ahụ ga-abụrịrị onye na-agwọ ọrịa epoxy na-ekpo ọkụ nke nwere Tg n'elu 125 ° C, na-achọ ọgwụgwọ okpomọkụ na 85-120 Celsius C na mmeghachi omume ngwa ngwa na ụlọ okpomọkụ. N'okpuru ebe a bụ nkọwa zuru ezu dịka onye ahịa rịọrọ.
I. Sistemụ nhazi nke ire ọkụ
1. Sistemụ Retardant Core: Phosphorus-Nitrogen Synergy
Tebụl ozi na-egbochi ire ọkụ
| Ọkụ na-egbochi ọkụ | Mechanism | Nbudata akwadoro | Okwu |
|---|---|---|---|
| Aluminom hypophosphite | Ọkpụkpọ ire ọkụ na-adị ogologo oge, na-etolite akwa oyi akwa phosphate chara aluminom | 10-15% | Ihe na-egbochi ire ọkụ nke mbụ, okpomọkụ ire ere. >300°C |
| Ammonium polyphosphate (APP) | Intumescent ire ọkụ retardancy, mekọrịta ya na aluminom hypophosphite | 5-10% | APP na-eguzogide acid achọrọ |
| Melamine cyanurate (MCA) | Nitrogen, na-eme ka njikọ nke phosphorus dịkwuo elu, na-egbochi anwụrụ ọkụ | 3–5% | Na-ebelata ntapu |
2. Auxiliary Flame Retardants and Synergists
Tebụl ozi ndị na-egbochi ire ọkụ inyeaka
| Ọkụ na-egbochi ọkụ | Mechanism | Nbudata akwadoro | Okwu |
|---|---|---|---|
| Zinc borate | Na-akwalite nhazi cha cha, na-egbochi ọkụ mgbe ọkụ gasịrị | 2–5% | Oke oke nwere ike belata ọgwụgwọ |
| Aluminom hydroxide dị mma | Endothermic jụrụ oyi, nkwụsị anwụrụ ọkụ | 5-8% | Ntinye njikwa (iji zere mbelata Tg) |
3. Nhazi Ọmụmaatụ (Mkpokọta Ibu: 20–30%)
Nhazi ntọala (ihe metụtara mkpokọta ọdịnaya resin)
| Akụkụ | Ọdịnaya (ihe metụtara resin) |
|---|---|
| Aluminom hypophosphite | 12% |
| APP | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminom hydroxide | 5% |
| Mkpokọta nbudata | 32% (nke dabara na 25-30%) |
II. Nzọụkwụ nhazi igodo
1. Ngwakọta na Mgbasa
A. Ọgwụgwọ tupu:
- Aluminom hypophosphite kpọrọ nkụ, APP, na MCA na 80°C maka awa 2 (na-egbochi mmịpụta mmiri).
- Jiri ihe na-ejikọta silane (dịka ọmụmaatụ, KH-550).
B. Usoro ngwakọta:
- Epoxy resin + ọkụ retardants (60ºC, kpalie maka 1h)
- Tinye ihe na-agwọ ọrịa anhydride (dobe okpomọkụ <80°C)
- Mkpuchi ikuku (-0.095 MPa, 30 min)
2. Usoro ọgwụgwọ
Ngwọta nzọụkwụ (na-edozi nkwụsi ike nke ire ọkụ yana nnukwu Tg):
- 85ºC / 2h (mmalite nwayọ, na-ebelata egosipụta)
- 120C / 2h (na-eme ka mmeghachi omume anhydride zuru ezu)
- 150°C/1h (na-abawanye njupụta crosslinking, Tg>125°C)
3. Ihe ndetu isi
- Njikwa viscosity: Ọ bụrụ na viscosity dị oke elu, tinye 5% reactive epoxy diluent (dịka, AGE).
- Ọgwụgwọ egbu oge: Jiri methylhexahydrophthalic anhydride (MeHHPA) ma ọ bụ tinye 0.2% 2-ethyl-4-methylimidazole (na-ebelata mmeghachi omume okpomọkụ n'ime ụlọ).
III. Nnwale arụmọrụ & mmezi
1. Nkwụghachi ọkụ:
- Nnwale UL94 V0 (ọkpụrụkpụ 1.6mm): Gbaa mbọ hụ na oge ọkụ <10 sec, enweghị ntapu.
- Ọ bụrụ na ọ daa: Dịkwuo aluminom hypophosphite (+3%) ma ọ bụ APP (+2%).
2. Arụmọrụ okpomọkụ:
- Nnwale DSC maka Tg: Ọ bụrụ Tg <125°C, belata aluminum hydroxide (na-ewetu Tg n'ihi mmetụta endothermic).
3. Nrụ arụ:
- Ọ bụrụ na ike mgbanwe na-ada, tinye 1-2% nano-silica maka nkwado.
IV. Okwu & Ngwọta nwere ike
Okwu na-egbochi ire ọkụ na tebụl ngwọta
| Okwu | Ihe kpatara ya | Ngwọta |
|---|---|---|
| Ọgwụgwọ ezughị ezu | Mmụba mmiri mmiri ma ọ bụ nnyonye anya pH sitere na ire ere | Ihe ndozi akpọọla nkụ, jiri APP na-eguzogide acid |
| Efere resin na-adịghị mma | Ịkwado ihe ndochi oke | Belata aluminom hydroxide ka ọ bụrụ 3% ma ọ bụ tinye ihe mgbaze |
| UL94 ọdịda | Mmekọrịta PN ezughi oke | Mee MCA (ruo 6%) ma ọ bụ aluminom hypophosphite (ruo 15%) |
V. Usoro ọzọ (Ọ bụrụ na achọrọ)
Dochie akụkụ nke APP jiri usoro DOPO (dịka, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminom hypophosphite na-ebelata mkpokọta loading (~ 18%) ka ị na-arụ ọrụ.
Ngwakọta a na-edozi nkwụghachi ọkụ, nchekwa gburugburu ebe obibi, yana ịrụ ọrụ oke okpomọkụ. A na-atụ aro ịnwale obere obere (500g) tupu mmepụta zuru oke.
More info., pls contact lucy@taifeng-fr.com
Oge nzipu: Jul-25-2025
