wasu nau'ikan roba na silicone waɗanda aka yi amfani da su wajen rage harshen wuta ba tare da halogen ba

Ga wasu ƙira guda biyar na robar silicone waɗanda aka yi bisa ga na'urorin hana harshen wuta marasa halogen, waɗanda suka haɗa da na'urorin hana harshen wuta da abokin ciniki ya samar (aluminum hypophosphite, zinc borate, MCA, aluminum hydroxide, da ammonium polyphosphate). Waɗannan ƙira suna da nufin tabbatar da rage harshen wuta yayin da suke rage adadin ƙari don rage tasirin da ke kan halayen injina na robar silicone.

1. Tsarin Haɗakar da Flame Retardant na Phosphorus-Nitrogen (Nau'in Haɗa Char-Forming Mai Inganci)

Manufa: UL94 V-0, ƙarancin hayaƙi, ya dace da aikace-aikacen zafin jiki matsakaici zuwa mai girma

Roba Mai Tushe: Roba mai silicone na Methyl vinyl (VMQ, 100 phr)

Masu hana harshen wuta:

• Aluminum hypophosphite (AHP, wanda aka gina bisa phosphorus): 15 phr
• Yana samar da ingantaccen tushen phosphorus, yana haɓaka samuwar sinadarai masu guba, kuma yana hana ƙonewar iskar gas.
• Melamine cyanurate (MCA, wanda aka samo daga nitrogen): 10 phr
• Yana aiki tare da phosphorus, yana fitar da iskar gas mara aiki, kuma yana rage iskar oxygen.
• Zinc borate (ZnB): 5 phr
• Yana ƙarfafa samuwar char, yana hana hayaki, kuma yana ƙara kwanciyar hankali a cikin layer ɗin char.
• Aluminum hydroxide (ATH, hanyar sinadarai, 1.6–2.3 μm): 20 phr
• Rushewar endothermic, jinkirin harshen wuta mai taimako, da kuma ingantaccen warwatsewa.

Ƙari:

• Man silicone na Hydroxyl (2 phr, yana inganta sarrafawa)
• Silica mai hayaki (10 phr, ƙarfafawa)
• Maganin warkarwa (Diperoxide, 0.8 phr)

Siffofi:

• Jimlar nauyin da ke hana harshen wuta ~ 50 phr, daidaita juriyar harshen wuta da halayen injiniya.
• Haɗin kai tsakanin phosphorus da nitrogen (AHP + MCA) yana rage adadin da ake buƙata na masu hana harshen wuta.

2. Tsarin hana harshen wuta mai haske (Nau'in Loading mai ƙarancin nauyi)

Manufa: UL94 V-1/V-0, ya dace da samfuran siriri

Roba Mai Tushe: VMQ (100 phr)

Masu hana harshen wuta:

• Ammonium polyphosphate (APP, wanda aka gina bisa phosphorus-nitrogen): 12 phr
• Tushen samuwar char mai haske, tare da kyakkyawan jituwa da robar silicone.
• Aluminum hypophosphite (AHP): 8 phr
• Ƙarin tushen phosphorus, yana rage yawan sinadarin APP.
• Zinc borate (ZnB): 5 phr
• Haɗakar da sinadarai masu haɗaka da kuma rage yawan ruwa.
• Aluminum hydroxide (ƙasa, 3–20 μm): 15 phr
• Mai rage wutar lantarki mai rahusa, yana rage yawan APP.

Ƙari:

• Man silikon vinyl (3 phr, plasticization)
• Silica mai ruwa (15 phr, ƙarfafawa)
• Tsarin warkar da platinum (0.1% Pt)

Siffofi:

• Jimlar nauyin da ke hana harshen wuta ~40 phr, yana da tasiri ga samfuran siriri saboda tsarin intumescent.
• APP yana buƙatar maganin saman (misali, wakilin haɗin silane) don hana ƙaura.

3. Tsarin Ingantaccen Aluminum Hydroxide Mai Yawan Lodawa (Nau'in Inganci Mai Kyau)

Manufa: UL94 V-0, ya dace da kayayyaki masu kauri ko kebul

Roba Mai Tushe: VMQ (100 phr)

Masu hana harshen wuta:

• Aluminum hydroxide (ATH, hanyar sinadarai, 1.6–2.3 μm): 50 phr
• Babban maganin hana harshen wuta, rugujewar endothermic, ƙaramin girman barbashi don ingantaccen warwatsewa.
• Aluminum hypophosphite (AHP): 5 phr
• Yana inganta ingancin ƙirƙirar char, yana rage nauyin ATH.
• Zinc borate (ZnB): 3 phr
• Dakatar da hayaki da kuma hana haske.

Ƙari:

• Maganin haɗa Silane (KH-550, 1 phr, yana inganta hanyar haɗin ATH)
• Silica mai hayaki (8 phr, ƙarfafawa)
• Maganin peroxide (DCP, 1 phr)

Siffofi:

• Jimlar nauyin da ke hana harshen wuta ~58 phr, amma ATH ya mamaye don ingantaccen farashi.
• Ƙaramin girman barbashi na ATH yana rage asarar ƙarfin tauri.

4. Tsarin Aluminum Hypophosphite (AHP) wanda ba shi da tsari

Aikace-aikace: UL94 V-1/V-2, ko kuma inda tushen nitrogen ba a son su (misali, guje wa kumfa na MCA da ke shafar bayyanar).

Tsarin da aka ba da shawarar:

• Roba Mai Tushe: VMQ (100 phr)
• Aluminum hypophosphite (AHP): 20–30 hr
• Babban sinadarin phosphorus (40%); 20 phr yana samar da kusan kashi 8% na phosphorus don rage harshen wuta.
• Ga UL94 V-0, ƙara yawan zafin jiki zuwa 30 phr (zai iya lalata halayen injina).
• Cika Mai Ƙarfafawa: Silica (10-15 phr, yana riƙe ƙarfi)
• Ƙari: Man silikon Hydroxyl (2 phr, mai sarrafawa) + maganin warkarwa (Diperoxide ko tsarin platinum).

Siffofi:

• Yana dogara ne akan jinkirin harshen wuta mai ƙarfi (samfurin char), yana inganta LOI sosai amma yana da ƙarancin hana hayaki.
• Yawan lodi (>25 phr) na iya taurare kayan; ana ba da shawarar ƙara 3-5 phr ZnB don inganta ingancin char.

5. Aluminum Hypophosphite (AHP) + Haɗin MCA

Aikace-aikace: UL94 V-0, ƙarancin lodi tare da haɗin gwiwar hana harshen wuta na lokaci-lokaci.

Tsarin da aka ba da shawarar:

• Roba Mai Tushe: VMQ (100 phr)
• Aluminum hypophosphite (AHP): 12–15 hr
• Tushen phosphorus don samar da char.
• MCA: 8–10 hr
• Tushen sinadarin Nitrogen don haɗin gwiwar PN, yana fitar da iskar gas mara aiki (misali, NH₃) don dakatar da yaɗuwar harshen wuta.
• Cika Mai Ƙarfafawa: Silica (10 hr)
• Ƙari: Maganin haɗa Silane (1 phr, taimakon watsawa) + maganin warkarwa.

Siffofi:

• Jimlar nauyin da ke hana harshen wuta ~20–25 phr, ƙasa da AHP mai zaman kansa sosai.
• MCA yana rage buƙatar AHP amma yana iya ɗan shafar bayyana gaskiya (yi amfani da nano-MCA idan ana buƙatar haske).

Takaitaccen Tsarin Tsarin Masu Hana Wutar Lantarki

Shawarwarin Gwaji

1. Gwajin Fifiko: AHP + MCA (15+10 phr). Idan an cimma V-0, a hankali a rage AHP (misali, 12+10 phr).
2. Gwajin AHP Mai Zaman Kanta: Fara da 20 phr, ƙara da 5 phr don kimanta LOI da UL94, sa ido kan halayen injina.
3. Matsewar Hayaki: Ƙara 3-5 phr ZnB a cikin kowace dabara ba tare da rage jinkirin harshen wuta ba.
4. Inganta Farashi: Haɗa ATH 10-15 phr don rage farashi, kodayake jimlar nauyin cikawa yana ƙaruwa.

Tsarin Haɗawa da Aka Ba da Shawara

(Don robar silicone mai ƙarin magani mai sassa biyu)

1. Jiyya Kafin Rubber na Tushe:

• Sanya robar silicone (misali, 107 gum, man vinyl silicone) a cikin injin haɗa na'urar planetary, sannan a cire iskar gas idan ya cancanta.

1. Ƙarin Mai Rage Wuta:

• Masu hana harshen wuta foda (misali, ATH, MH):
• Sai a haɗa su a cikin rukuni-rukuni, a haɗa su da robar tushe (haɗawa mai ƙarancin gudu, na minti 10-15) don guje wa taruwa.
• Busar da shi a zafin 80-120°C idan yana da hygroscopic.
• Masu hana harshen wuta ruwa (misali, phosphates):
• A hade kai tsaye da man silicone, crosslinker, da sauransu, a lokacin da aka yanke sosai (minti 20-30).

1. Sauran Ƙari:

• A ƙara abubuwan cikawa a jere (misali, silica), crosslinker (hydrosilane), catalyst (platinum), da masu hana su.

1. Daidaita Daidaito:

• Ƙara tacewa ta amfani da injin niƙa mai naɗewa uku ko kuma mai ƙarfin hali (mai mahimmanci ga abubuwan da ke ƙara nano kamar CNTs).

1. Rage Gass & Tacewa:

• Vacuum degas (-0.095 MPa, minti 30), tacewa don buƙatun tsarki mai yawa.

Muhimman Abubuwan Da Ake Tunani

• Zaɓin Mai Hana Wuta:
• Masu hana halogen (misali, ATH) suna buƙatar ƙaramin girman barbashi (1-5 μm); ɗaukar kaya fiye da kima yana cutar da halayen injiniya.
• Magungunan hana ɗaukar nauyi da aka yi da silicone (misali, resin silicone na phenyl) suna ba da damar yin aiki yadda ya kamata amma a farashi mai tsada.
• Sarrafa Tsarin Aiki:
• Zafin jiki ≤ 60°C (yana hana gubar sinadarin platinum ko warkarwa da wuri).
• Danshi ≤ 50% RH (yana guje wa halayen da ke tsakanin man silicone na hydroxyl da abubuwan hana harshen wuta).

Kammalawa

• Samar da Kayan Abinci Mai Yawa: A haɗa na'urorin hana harshen wuta da robar tushe kafin a haɗa su domin inganci.
• Bukatun Kwanciyar Hankali Mai Girma: A haɗa a lokacin haɗawa don rage haɗarin ajiya.
• Tsarin hana harshen wuta na Nano: Yaɗuwar da ta yi yawa don hana taruwa.

More info., pls contact lucy@taifeng-fr.com