Ikoranabuhanga ryo gutunganya no gutunganya imvange y'umuriro idafite Halogen muri Epoxy Resin
Umukiriya arimo gushaka umuti urinda umuriro udahumanya ibidukikije, udafite halogen, kandi udafite icyuma gikomeye ukwiriye epoxy resin hamwe na anhydride curing system, bisaba kubahiriza UL94-V0. Umuti urinda umuriro ugomba kuba ari umuti urinda umuriro wa epoxy ufite ubushyuhe buri hejuru ya 125°C, ukeneye gutwika ubushyuhe kuri 85–120°C kandi ukagira ingaruka buhoro ku bushyuhe bw'icyumba. Hasi hari uburyo burambuye bwo kuwukoresha nk'uko umukiriya abisabye.
I. Sisitemu yo Gutunganya Ingufu Zidashira Umuriro
1. Sisitemu yo Kudashyira Umuriro mu Gice Gikuru: Guhuza Fosifore na Azote
Imbonerahamwe y'amakuru ajyanye n'umuriro
| Irinda umuriro | Uburyo | Ibyemezo byo gupakira | Ibitekerezo |
|---|---|---|---|
| Hypophosfite ya aluminiyumu | Umuriro udashobora gucika burundu, ukora urwego rwa aluminiyumu rwa fosfeti | 10–15% | Ingufu zigabanya umuriro cyane, ubushyuhe bwo kubora >300°C |
| Ammonium polyphosphate (APP) | Gutinda k'umuriro mu kirere, bikorana na hypophosphite ya aluminiyumu | 5–10% | APP irwanya aside irakenewe |
| Melamine cyanurate (MCA) | Isoko ya azote, yongera imikorere ya fosifore, ikagabanya umwotsi | 3–5% | Bigabanya amazi |
2. Ibyuma by'ubufasha bibuza umuriro n'ibihuza
Imbonerahamwe y'amakuru ku bihungabanya umuriro by'inyongera
| Irinda umuriro | Uburyo | Ibyemezo byo gupakira | Ibitekerezo |
|---|---|---|---|
| Borate ya zinki | Itera imbere kurema kwa char, igabanya urumuri rw'inyuma | 2–5% | Kunywa byinshi bishobora gutuma bitinda kugabanuka |
| Hydroxide nziza ya aluminiyumu | Gukonjesha mu gihe cy'izuba, kugabanya umwotsi | 5–8% | Kugenzura uburyo bwo gupakira (kugira ngo wirinde kugabanya Tg) |
3. Ingero zo gukora (Igiteranyo cy'ibicuruzwa: 20–30%)
Uburyo bw'ibanze bwo gukora (Ugereranyije n'ibikubiye muri Resin yose)
| Igice | Ibirimo (bijyanye na Resin) |
|---|---|
| Hypophosfite ya aluminiyumu | 12% |
| APP | 8% |
| MCA | 4% |
| Borate ya zinki | 3% |
| hydroxide ya aluminiyumu | 5% |
| Igiteranyo cyose cyo gupakira | 32% (bishobora guhindurwa kuri 25–30%) |
II. Intambwe zo Gutunganya Ibyingenzi
1. Kuvanga no gukwirakwiza
A. Mbere yo kuvurwa:
- Hypophosphite yumye ya aluminiyumu, APP, na MCA ku bushyuhe bwa 80°C mu gihe cy'amasaha 2 (bibuza amazi kwinjiza).
- Shyira mu buryo bw'umwimerere ibintu bidakora neza (aluminium hydroxide, zinc borate) ukoresheje silane coupling agent (urugero, KH-550).
B. Uburyo bwo kuvanga:
- Epoxy resin + Ibidakoresha umuriro (60°C, kangura isaha imwe)
- Shyiramo umuti uvura anhidride (komeza ubushyuhe buri munsi ya 80°C)
- Gukuraho imyuka mu cyuma gishyuha (-0.095 MPa, iminota 30)
2. Uburyo bwo kuvura
Intambwe zo Gukira (Ipima uburimbane bw'umuriro udashobora guhagarara neza hamwe na Tg nyinshi):
- 85°C / amasaha 2 (gutangira buhoro buhoro, bigabanya uduheri)
- Ubushyuhe bwa 120°C / amasaha 2 (butuma habaho igisubizo cyuzuye cya anhydride)
- 150°C / isaha 1 (byongera ubucucike bw'imibanire, Tg >125°C)
3. Ingingo z'ingenzi
- Kugenzura ubushyuhe: Niba ubushyuhe buri hejuru cyane, ongeramo 5% ya epoxy diluent (urugero, AGE).
- Gutinda gukira: Koresha methylhexahydrophthalic anhydride (MeHHPA) cyangwa wongeremo 0.2% 2-ethyl-4-methylimidazole (igabanya ubushyuhe bw'icyumba).
III. Kugenzura no Guhindura Imikorere
1. Kudakomeza gutwika:
- Ikizamini cya UL94 V0 (ubugari bwa 1.6mm): Menya neza ko igihe cyo gutwika kiri munsi y'amasegonda 10, nta gutonyanga.
- Iyo binaniranye: Ongera aluminium hypophosphite (+3%) cyangwa APP (+2%).
2. Imikorere y'ubushyuhe:
- Ikizamini cya DSC cya Tg: Niba Tg iri munsi ya 125°C, gabanya hydroxide ya aluminiyumu (igabanya Tg bitewe n'ingaruka za endothermic).
3. Imiterere ya mekanike:
- Niba imbaraga zo gupfuka zigabanuka, ongeramo nano-silica 1–2% kugira ngo wongere imbaraga.
IV. Ibibazo bishoboka n'ibisubizo
Imbonerahamwe y'ibibazo bihungabanya umuriro n'ibisubizo
| Ikibazo | Impamvu | Umuti |
|---|---|---|
| Gukira bidahagije | Gufata ubushuhe cyangwa kubangamira pH biva ku bintu bigabanya umuriro | Shyiramo ibikoresho by'ubwumishe mbere yo kumisha, koresha APP irinda aside |
| Urujya n'uruza rw'amatafari rudakora neza | Gushyiramo ibyuma byinshi cyane | Gabanya hydroxide ya aluminiyumu kugeza kuri 3% cyangwa wongereho umuti uvangura |
| Kunanirwa kwa UL94 | Ubufatanye bwa PN budahagije | Ongera MCA (kugera kuri 6%) cyangwa aluminium hypophosphite (kugera kuri 15%) |
V. Uburyo bushya bwo gushushanya (niba bikenewe)
Simbuza igice cya APP n'ibikomoka kuri DOPO (urugero, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminiyumu hypophosphite igabanya umutwaro wose (~18%) mu gihe ikomeza gukora neza.
Ubu buryo buhuza ubushyuhe n'ubukonje, umutekano w'ibidukikije, n'imikorere y'ubushyuhe bwinshi. Igeragezwa rito (500g) rirasabwa mbere yo gukora ku gipimo cyuzuye.
More info., pls contact lucy@taifeng-fr.com
Igihe cyo kohereza: 25 Nyakanga-2025
