Tsarin Maganar Harshen Harshen Harshen PVC na Masterbatch
Zane da ingantawa na PVC flame retardant masterbatch formulations, hada da data kasance harshen retardants da kuma key synergistic aka gyara, niyya UL94 V0 harshen retardancy (daidaitacce zuwa V2 ta rage ƙari adadin).
I. Base Formula Shawarar (Rgid PVC)
Ƙirƙirar Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙwasa:
| Bangaren | Ana lodawa (wt%) | Bayanin Aiki |
|---|---|---|
| Guduro PVC (nau'in SG-5) | 40-50% | Matrix abu, zai fi dacewa low man-sha sa |
| Aluminum hypophosphite | 12-15% | Tushen acid don samuwar char, yana kashe bayan haske |
| Zinc borate | 8-10% | Haɓaka hayaki na haɗin gwiwa, yana amsawa tare da HCl daga lalatawar PVC |
| Aluminum hydroxide da aka gyara saman | 10-12% | Endothermic sanyaya, na bukatar silane hada guda biyu wakili shafi (lalata yanayin zafi. matches PVC aiki) |
| Antimony trioxide (Sb₂O₃) | 3-5% | Core synergist, yana haɓaka jinkirin harshen wuta ta hanyar haɗin gwiwar Cl-Sb |
| Zinc molybdate (mai hana hayaki) | 5-8% | Abubuwan da aka ba da shawarar, yana rage yawan hayaki (maɓalli don bin DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Taimakon ƙirƙira char, yana inganta sarrafa narkewa-drip |
| Thermal stabilizer (Ca-Zn composite) | 3-4% | Mahimmanci don hana lalacewar thermal yayin aiki |
| Plasticizer (DOP ko madadin yanayi) | 0-8% | Daidaita don taurin (na zaɓi don m PVC) |
| Man shafawa (calcium stearate) | 1-1.5% | Yana inganta iya aiki, yana hana abin nadi |
| Taimakon sarrafawa (ACR) | 1-2% | Yana haɓaka plastification da tarwatsewar masterbatch |
II. Ka'idodin Inganta Maɓalli
- Tsarin Haɗin Wuta Retardant
- Cl-Sb Synergy: PVC's inherent chlorine (56%) hade tare da 3-5% Sb₂O₃ yana samar da shingen SbCl₃, yana ba da damar jinkirin lokacin-lokacin gas/condensed-phase dual-action harshen wuta.
- Ciwon hayaki: Zinc molybdate + zinc borate yana rage yawan hayaki da> 40% (ASTM E662).
- Haɓaka Char: Aluminum hypophosphite + DPE yana haifar da haɗin giciye phosphoric ester char a 200–250°C, yana ramawa ga ƙarancin caja na matakin farko na PVC.
- Gudanar da Daidaitawa
- Zazzabi Matching: Aluminum hypophosphite (bazuwar ≥250 ° C) da kuma surface-gyara Al (OH) ₃ (barga zuwa> 200 ° C) dace PVC aiki (160-190 ° C).
- Tabbacin Ƙarfafawa: Ca-Zn stabilizers suna hana lalata resin daga sakin HCl; ACR yana taimakawa plastification a cikin babban tsarin filler.
- Daidaiton Ayyuka
- Jimlar ɗaukar nauyi mai ɗaukar wuta: 35-45%, riƙewar ƙarfin ƙarfi ≥80% (na al'ada ≥40 MPa don m PVC).
- Don sassauci (PVC mai sassauƙa), maye gurbin DOP tare da 8% epoxidized man waken soya (dual plasticizer / flame retardant).
III. Gwaji & Ma'aunin Tabbatarwa
Dagewar Harshe:
- UL94 V0 (1.6mm kauri)
- Ƙayyadaddun Oxygen Index (LOI) ≥32%
Ikon shan taba:
- Gwajin ɗakin hayaki na NBS: Matsakaicin ƙayyadaddun ƙayyadaddun ganiDs≤150 (Yanayin harshen wuta)
Kayayyakin Injini:
- Ƙarfin ƙarfi ≥35 MPa (m), elongation a hutu ≥200% (m)
Ƙarfin Ƙarfi:
- DMA ta tabbatar da cewa babu raguwar modul a 180°C.
IV. Kudade & Daidaita Daidaita Daidaitawa
Madadin Mai Rahusa:
- Rage zinc molybdate zuwa 3%, maye gurbin Al (OH) ₃ da Mg(OH)₂ (ƙara zuwa 15%).
Magani-Free Antimony:
- Cire Sb₂O₃, yi amfani da 2% aluminum diethylphosphinate + 5% nano-kaolin (ƙananan ƙarancin inganci; yana buƙatar kauri 3 mm don V0).
Muhimmancin shan taba:
- Ƙara 1% silicone resin-rufin carbon baƙar fata don ƙara rage yawan hayaki da 15%.
V. Ka'idojin Gudanarwa
- Jerin hadawa:
PVC guduro → stabilizer + lubricant → harshen wuta retardants (ƙananan zuwa babban yawa) → plasticizer (ƙara fesa karshe). - Matsakaicin Sarrafa:
Yankunan extruder Twin-screw: 160°C (ciyarwa) → 170°C (narkewa) → 180°C (haɗuwa) → 175°C (mutuwar kai). - Jagorar Jagora:
Ba da shawarar 50% lodi; tsarma 1: 1 tare da budurwa PVC don yin amfani da allura na ƙarshe.
Wannan tsari yana daidaita girman jinkirin harshen wuta, ƙarancin hayaki, da kwanciyar hankali aiki. Ana ba da shawarar ƙananan gwaje-gwaje kafin ƙima, tare da gyare-gyare bisa tsarin samfurin (zanen gado, igiyoyi, da dai sauransu).
More info., pls contact lucy@taifeng-fr.com
Lokacin aikawa: Jul-08-2025
