Tsarin da Fasahar Sarrafawa da Sarrafawa Ba Tare da Halogen Ba don Resin Epoxy
Abokin ciniki yana neman maganin hana wuta mai hana muhalli, mara halogen, kuma mai hana wuta mai nauyi wanda ya dace da resin epoxy tare da tsarin warkarwa na anhydride, wanda ke buƙatar bin ƙa'idodin UL94-V0. Dole ne maganin warkarwa ya zama maganin warkarwa na epoxy mai zafi mai zafi tare da Tg sama da 125°C, wanda ke buƙatar maganin warkarwa na zafi a 85–120°C da kuma amsawa a hankali a zafin ɗaki. Ga cikakken bayani game da tsarin kamar yadda abokin ciniki ya buƙata.
I. Tsarin Tsarin Hana Wutar Lantarki
1. Tsarin hana harshen wuta na tsakiya: Haɗin kai tsakanin Phosphorus da Nitrogen
Teburin Bayani Mai Rage Wuta
| Mai hana harshen wuta | Tsarin aiki | Ana ba da shawarar lodawa | Bayani |
|---|---|---|---|
| Aluminum hypophosphite | Rashin ƙarfin harshen wuta mai ƙunci, yana samar da layin aluminum phosphate char | Kashi 10–15% | Babban mai hana harshen wuta, zafin bazuwar. >300°C |
| Ammonium polyphosphate (APP) | Yana rage jinkirin harshen wuta, yana haɗuwa da sinadarin aluminum hypophosphite | 5–10% | Ana buƙatar APP mai jure wa acid |
| Melamine cyanurate (MCA) | Tushen sinadarin Nitrogen, yana ƙara haɗin gwiwar phosphorus, yana rage hayaki | 3–5% | Yana rage diga ruwa |
2. Masu Taimakawa Masu Hana Wuta da Masu Haɗa Kai
Teburin Bayani na Masu Rage Wutar Lantarki na Mataimaka
| Mai hana harshen wuta | Tsarin aiki | Ana ba da shawarar lodawa | Bayani |
|---|---|---|---|
| Zinc borate | Yana inganta samuwar char, yana hana haske bayan haske | 2–5% | Yawan da ya wuce kima na iya rage saurin warkewa |
| Kyakkyawan aluminum hydroxide | Sanyayawar endothermic, rage hayaki | 5–8% | Lodawa mai sarrafawa (don guje wa rage Tg) |
3. Misalin Tsarin (Jimillar Lodawa: 20–30%)
Tsarin Tushe (Dangane da Jimillar Abubuwan da ke cikin Resin)
| Bangaren | Abubuwan da ke ciki (Dangane da Resin) |
|---|---|
| Aluminum hypophosphite | 12% |
| APP | 8% |
| MCA | 4% |
| Zinc borate | 3% |
| Aluminum hydroxide | 5% |
| Jimlar Lodawa | 32% (wanda za'a iya daidaitawa zuwa 25–30%) |
II. Matakan Sarrafa Mahimman Bayanai
1. Haɗawa da Watsawa
A. Kafin Jiyya:
- Busar da sinadarin aluminum hypophosphite, APP, da MCA a zafin 80°C na tsawon awanni 2 (yana hana sha danshi).
- Yi amfani da sinadarin da ba shi da sinadarai masu gina jiki (aluminum hydroxide, zinc borate) wajen hada sinadarin silane (misali, KH-550).
B. Jerin Haɗawa:
- Resin Epoxy + Masu hana harshen wuta (60°C, a juya na tsawon awa 1)
- Ƙara maganin hana anhydride (a kiyaye zafin jiki ƙasa da 80°C)
- Rufe iskar gas (-0.095 MPa, minti 30)
2. Tsarin Magancewa
Magani Mataki (Daidaita daidaiton hana harshen wuta da babban Tg):
- 85°C / awanni 2 (farawa a hankali, yana rage kumfa)
- 120°C / awanni 2 (yana tabbatar da cikakken amsawar anhydride)
- 150°C / awa 1 (yana ƙara yawan haɗin gwiwa, Tg > 125°C)
3. Muhimman Bayanan kula
- Kula da danko: Idan danko ya yi yawa, ƙara kashi 5% na sinadarin epoxy mai amsawa (misali, AGE).
- Maganin da aka jinkirta: Yi amfani da methylhexahydrophthalic anhydride (MeHHPA) ko ƙara 0.2% 2-ethyl-4-methylimidazole (yana rage saurin amsawar zafin ɗaki).
III. Tabbatar da Aiki da Daidaitawa
1. Dakatar da harshen wuta:
- Gwajin UL94 V0 (kauri 1.6mm): Tabbatar lokacin ƙonawa ƙasa da daƙiƙa 10, babu diga.
- Idan ya gaza: Ƙara sinadarin aluminum hypophosphite (+3%) ko APP (+2%).
2. Aikin Zafi:
- Gwajin DSC don Tg: Idan Tg ya faɗi ƙasa da 125°C, rage aluminum hydroxide (yana rage Tg saboda tasirin endothermic).
3. Kayayyakin Inji:
- Idan ƙarfin lanƙwasa ya ragu, ƙara kashi 1-2% nano-silica don ƙarfafawa.
IV. Matsaloli da Magani Masu Yiwuwa
Teburin Maganin Matsalolin da ke Hana Wutar Lantarki
| Batun | Dalili | Mafita |
|---|---|---|
| Gyaran da bai kammala ba | Sha danshi ko tsangwama daga pH daga masu hana harshen wuta | Kafin a busar da kayan cikawa, yi amfani da APP mai jure wa acid |
| Rashin kwararar resin | Loda kayan cikawa da yawa | Rage aluminum hydroxide zuwa 3% ko ƙara mai narkewa |
| Rashin nasarar UL94 | Rashin isasshen haɗin kai na PN | Ƙara MCA (zuwa 6%) ko aluminum hypophosphite (zuwa 15%) |
V. Madadin Tsarin (Idan Ana Bukata)
Sauya wani ɓangare na APP da abubuwan da aka samo daga DOPO (misali, DOPO-HQ):
- 8% DOPO-HQ + 10% aluminum hypophosphite yana rage jimillar lodi (~18%) yayin da yake ci gaba da aiki.
Wannan haɗin yana daidaita juriyar wuta, amincin muhalli, da kuma aikin zafin jiki mai yawa. Ana ba da shawarar yin ƙananan gwaje-gwaje (500g) kafin a samar da cikakken sikelin.
More info., pls contact lucy@taifeng-fr.com
Lokacin Saƙo: Yuli-25-2025
