Phosphorus-Nitrogen Flame Retardants puas tuaj yeem ua tiav V0 kev ntsuas hauv Silicone Rubber?
Thaum cov neeg siv khoom nug txog kev siv tsuas yog txhuas hypophosphite (AHP) lossis AHP + MCA kev sib txuas rau halogen-dawb nplaim retardancy hauv silicone roj hmab kom ua tiav V0 kev ntsuam xyuas, cov lus teb yog yog - tab sis kev kho ntau npaum li cas raws li qhov yuav tsum tau ua ntawm cov nplaim hluav taws. Hauv qab no yog cov lus qhia tshwj xeeb rau cov xwm txheej sib txawv:
1. Siv Aluminium Hypophosphite (AHP) Ib leeg
Cov xwm txheej siv tau: Rau UL94 V-1 / V-2 cov cai lossis cov ntawv thov nkag siab rau cov khoom siv nitrogen (xws li, tsis txhob ua npuas dej los ntawm MCA uas tuaj yeem cuam tshuam rau cov tsos).
Pom zoo formulation:
- Lub hauv paus roj hmab: Methyl vinyl silicone roj hmab (VMQ, 100 phr)
- Aluminium hypophosphite (AHP): 20-30 phr
- Cov ntsiab lus phosphorus siab (40%); 20 phr muab ~ 8% phosphorus cov ntsiab lus rau cov nplaim taws retardancy.
- Rau UL94 V-0, nce mus rau 30 phr (tej zaum yuav cuam tshuam rau txhua yam khoom).
- Kev txhawb nqa muab tub lim: Fumed silica (10-15 phr, tuav lub zog)
- Additives: Hydroxyl silicone roj (2 phr, txhim kho kev ua haujlwm) + curing agent (peroxide lossis platinum system)
Yam ntxwv:
- AHP ib leeg tso siab rau cov nplaim hluav taws kub nyhiab (char formation), txhim kho cov pa ntsuas pa (LOI) ntawm silicone roj hmab, tab sis muaj kev txwv tsis pub haus luam yeeb.
- Kev siv ntau npaum li cas (> 25 phr) tuaj yeem ua kom cov khoom tawv tawv; ntxiv 3-5 phr zinc borate tuaj yeem txhim kho char txheej zoo.
2. AHP + MCA Kev sib xyaw ua ke
Cov xwm txheej siv tau: UL94 V-0 qhov yuav tsum tau ua, tsom rau kev siv tshuaj tsawg tsawg nrog cov roj-theem nplaim hluav taws sib koom ua ke.
Pom zoo formulation:
- Lub hauv paus roj hmab: VMQ (100 phr)
- Aluminium hypophosphite (AHP): 12-15 phr
- Muab phosphorus qhov chaw, txhawb char tsim.
- MCA: 8-10 phr
- Nitrogen muab Synnergizes nrog AHP (PN nyhuv), tso cov roj inert (piv txwv li, nh₃) rau kev sib kis txhaws.
- Reinforced filler: Fumed silica (10 phr)
- Additives: Silane coupling tus neeg sawv cev (1 phr, txhim kho kev tawg) + tus neeg sawv cev kho
Yam ntxwv:
- Tag nrho cov nplaim retardant ntau npaum li cas: ~ 20-25 phr, qis dua AHP ib leeg.
- MCA txo AHP ntau npaum li cas tab sis tej zaum yuav cuam tshuam me ntsis rau pob tshab (nano-MCA pom zoo yog tias yuav tsum muaj pob tshab).
3. Qhov tseem ceeb Parameter sib piv
| Kev tsim qauv | Cia Siab Nplaim Retardancy | Total Dosage (phr) | Pros & Cons |
|---|---|---|---|
| AHP ib leeg (20 phr) | UL94 V-1 | 20 | Yooj yim, tus nqi qis; V-0 xav tau ≥30 phr, nrog kev ua haujlwm tsis zoo. |
| AHP ib leeg (30 phr) | UL94 V-0 | 30 | High nplaim retardancy tab sis nce hardness thiab txo elongation. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Synergistic effect, balanced performance-pom zoo rau kev sim thawj zaug. |
4. Cov lus pom zoo rau kev sim
- Kev xeem ua ntej rau AHP + MCA (15 + 10 phr): Yog tias V-0 ua tiav, maj mam txo AHP (xws li 12 + 10).
- AHP ib leeg pov thawj: Pib ntawm 20 phr, nce 5 phr ib qho kev ntsuas los ntsuas LOI thiab UL94, saib xyuas cov khoom hloov pauv.
- Kev haus luam yeeb xav tau: Ntxiv 3-5 phr zinc borate rau cov qauv saum toj no kom txo tau cov pa luam yeeb yam tsis muaj kev cuam tshuam cov nplaim hluav taws.
5. Ib co Coated Ammonium Polyphosphate
Peb muaj qee cov neeg siv khoom zoo siv TF-201G rau silicon roj hmab.
Rau kev ua kom zoo dua ntxiv, xav txog kev sib xyaw me me ntawm txhuas hydroxide (10-15 phr) kom txo tau cov nqi tag nrho, txawm tias qhov no ua rau cov ntsiab lus ntxiv tag nrho.
More inof., pls contact lucy@taifeng-fr.com
Post lub sij hawm: Lub Xya hli ntuj-25-2025
