Shin masu hana harshen wuta na Phosphorus-Nitrogen zasu iya cimma matsayin V0 a cikin robar silicone?
Idan abokan ciniki suka tambaya game da amfani da haɗin aluminum hypophosphite (AHP) ko AHP + MCA kawai don hana harshen wuta mara halogen a cikin robar silicone don cimma ƙimar V0, amsar ita ce eh - amma ana buƙatar daidaita yawan magani bisa ga buƙatun hana harshen wuta. Ga wasu shawarwari na musamman don yanayi daban-daban:
1. Amfani da Aluminum Hypophosphite (AHP) Shi Kadai
Yanayi masu dacewa: Ga buƙatun UL94 V-1/V-2 ko aikace-aikacen da suka shafi tushen nitrogen (misali, guje wa tasirin kumfa daga MCA wanda zai iya shafar bayyanar).
Shawarar dabara:
- Roba mai tushe: Roba mai silicone na Methyl vinyl (VMQ, 100 phr)
- Aluminum hypophosphite (AHP): 20–30 hr
- Babban sinadarin phosphorus (40%); 20 phr yana samar da kashi 8% na sinadarin phosphorus don rage harshen wuta.
- Ga UL94 V-0, ƙara yawan zafin jiki zuwa 30 phr (zai iya shafar halayen injina).
- Mai ƙara ƙarfi: Silica mai hayaƙi (10-15 phr, yana riƙe da ƙarfi)
- Ƙarin abubuwa: Man silikon Hydroxyl (2 phr, yana inganta sarrafawa) + maganin warkarwa (tsarin peroxide ko platinum)
Halaye:
- AHP kaɗai ya dogara ne akan rage harshen wuta mai ƙarfi (samfurin char), wanda ke inganta ma'aunin iskar oxygen (LOI) na robar silicone amma tare da ƙarancin hana hayaki.
- Yawan amfani (> 25 phr) na iya ƙara taurin kayan; ƙara zinc borate phr 3-5 na iya inganta ingancin layin char.
2. Haɗin AHP + MCA
Yanayi masu dacewa: Bukatun UL94 V-0, da nufin ƙara yawan amfani da ƙarin sinadarai tare da haɗin gwiwar hana harshen wuta na lokaci-lokaci.
Shawarar dabara:
- Roba mai tushe: VMQ (100 phr)
- Aluminum hypophosphite (AHP): 12–15 hr
- Yana ƙarfafa samuwar phosphorus, yana ƙarfafa samuwar ƙwayayen halitta.
- MCA: 8–10 phr
- Tushen sinadarin nitrogen yana aiki tare da AHP (tasirin PN), yana fitar da iskar gas mara aiki (misali, NH₃) don rage yaɗuwar harshen wuta.
- Cikakken mai ƙarfafawa: Silica mai hayaƙi (10 phr)
- Ƙarin abubuwa: Maganin haɗa Silane (1 phr, yana inganta watsawa) + maganin warkarwa
Halaye:
- Jimlar adadin maganin hana harshen wuta: ~20-25 phr, ƙasa da AHP kaɗai.
- MCA yana rage yawan shan AHP amma yana iya ɗan shafar bayyana gaskiya (ana ba da shawarar nano-MCA idan ana buƙatar bayyana gaskiya).
3. Kwatanta Ma'aunin Mahimmanci
| Tsarin | Ana tsammanin jinkirin harshen wuta | Jimlar Yawan Sha (phr) | Ribobi & Fursunoni |
|---|---|---|---|
| AHP kaɗai (20 ph) | UL94 V-1 | 20 | Mai sauƙi, mai rahusa; V-0 yana buƙatar ≥30 phr, tare da raguwar aiki. |
| AHP kaɗai (kwana 30) | UL94 V-0 | 30 | Babban jinkirin harshen wuta amma ƙara tauri da rage tsayi. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Tasirin haɗin gwiwa, daidaitaccen aiki - an ba da shawarar yin amfani da shi don gwaje-gwajen farko. |
4. Shawarwarin Gwaji
- Gwajin fifiko ga AHP + MCA (15+10 phr): Idan an cimma V-0, a hankali rage AHP (misali, 12+10).
- Tabbatar da AHP kaɗai: Fara da 20 phr, ƙara da 5 phr a kowace gwaji don kimanta LOI da UL94, sa ido kan canje-canjen halayen injina.
- Bukatun rage hayaki: A ƙara sinadarin zinc borate 3-5 a cikin sinadaran da ke sama don rage hayakin ba tare da rage jinkirin harshen wuta ba.
5. Wasu Ammonium Polyphosphate Mai Rufi
Muna da wasu abokan ciniki waɗanda suka yi nasarar amfani da TF-201G don robar silicon.
Don ƙarin ingantawa, yi la'akari da haɗa ƙananan adadin aluminum hydroxide (10-15 phr) don rage farashin gabaɗaya, kodayake wannan yana ƙara yawan abubuwan cikawa.
More inof., pls contact lucy@taifeng-fr.com
Lokacin Saƙo: Yuli-25-2025
