Zvinodzivirira Moto zvePhosphorus-Nitrogen Zvinogona Kuwana V0 Rating muSilicone Rubber Here?
Kana vatengi vakabvunza nezvekushandisa aluminium hypophosphite (AHP) kana AHP + MCA chete musanganiswa wesilicone rabha isina halogen kuti iwane V0 rating, mhinduro ndeyekuti hongu—asi gadziriso yemuyero inodiwa zvichienderana nezvinodiwa zvefire retardancy. Pazasi pane mazano chaiwo emamiriro akasiyana:
1. Kushandisa Aluminum Hypophosphite (AHP) Chete
Mamiriro ezvinhu anoshanda: Kune zvinodiwa zveUL94 V-1/V-2 kana mashandisirwo anonzwa nitrogen (semuenzaniso, kudzivirira furo rinobva kuMCA rinogona kukanganisa chitarisiko).
Mushonga unokurudzirwa:
- Rabha yepakutanga: Rabha yeMethyl vinyl silicone (VMQ, 100 phr)
- Aluminum hypophosphite (AHP): 20–30 phr
- Kuwanda kwephosphorus (40%); 20 ph inopa ~8% yephosphorus kuti irambe ichibvira moto.
- Pa UL94 V-0, wedzera kusvika pa30 phr (zvinogona kukanganisa hunhu hwemakanika).
- Chinosimbisa: Silica yakafumiswa (10–15 phr, inochengetedza simba)
- Zvinowedzerwa: Hydroxyl silicone oiri (2 phr, inovandudza kugadzirwa) + chinhu chinogadzirisa (peroxide kana platinum system)
Hunhu:
- AHP chete inoshandisa condensed-phase flame retardncy (char formation), zvichivandudza zvakanyanya oxygen index (LOI) yesilicone raber asi nekusagona kudzikamisa utsi.
- Dosi yakawanda (>25 phr) inogona kuwedzera kuomarara kwechinhu; kuwedzera 3-5 phr zinc borate kunogona kuvandudza kunaka kwechar layer.
2. Musanganiswa weAHP + MCA
Mamiriro ezvinhu anoshanda: Zvinodiwa zveUL94 V-0, zvichivavarira kuti pave nechinhu chinoderedza kupisa chine gasi-phase flame retardant synergy.
Mushonga unokurudzirwa:
- Rabha yepakutanga: VMQ (100 phr)
- Aluminum hypophosphite (AHP): 12–15 phr
- Inopa phosphorus, inokurudzira kuumbwa kwechai.
- MCA: 8–10 ph
- Nitrogen source inoshanda pamwe chete neAHP (PN effect), ichiburitsa magasi asina simba (semuenzaniso, NH₃) kudzivirira kupararira kwemurazvo.
- Chinosimbisa: Silica yakafumiswa (10 phr)
- Zvinowedzerwa: Silane coupling agent (1 phr, inovandudza kupararira) + kuporesa agent
Hunhu:
- Chiyero chose chinodzora moto: ~20–25 phr, chakaderera zvakanyanya pane AHP chete.
- MCA inoderedza muyero weAHP asi inogona kukanganisa kujeka kwemuviri (nano-MCA inokurudzirwa kana kujeka kwemuviri kuchidikanwa).
3. Kuenzanisa MaParamende Akakosha
| Kugadzira | Kudzoserwa Kwemoto Kunotarisirwa | Chipimo Chese (phr) | Zvakanakira & Zvakaipa |
|---|---|---|---|
| AHP chete (20 maphr) | UL94 V-1 | 20 | Zviri nyore, mutengo wakaderera; V-0 inoda ≥30 phr, pamwe nekudzikira kwekushanda kwayo. |
| AHP chete (30 phr) | UL94 V-0 | 30 | Kunonoka kwemurazvo zvakanyanya asi kuomarara kwakawedzera uye kurebesa kwakaderera. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Mhedzisiro yekubatana, kushanda kwakaringana—inokurudzirwa pamiedzo yekutanga. |
4. Mazano Ekuyedza
- Kuongororwa kwekutanga kweAHP + MCA (15+10 phr): Kana V-0 ikawanikwa, deredza AHP zvishoma nezvishoma (semuenzaniso, 12+10).
- Kuongororwa kweAHP chete: Tanga pa20 phr, wedzera ne5 phr pabvunzo imwe neimwe kuti uongorore LOI neUL94, uchitarisa shanduko dzehunhu hwemakanika.
- Zvinodiwa pakuderedza utsi: Wedzera 3-5 phr zinc borate kune zvataurwa pamusoro apa kuderedza utsi pasina kukanganisa kunonoka kwemoto.
5. Mamwe Ammonium Polyphosphate Akaputirwa
Tine vamwe vatengi vanobudirira kushandisa TF-201G pakugadzira rabha resilicon.
Kuti zviwedzere kunaka, funga nezvekushandisa aluminium hydroxide shoma (10–15 phr) kuderedza mari inoshandiswa, kunyange izvi zvichiwedzera huwandu hwese hwekuzadza.
More inof., pls contact lucy@taifeng-fr.com
Nguva yekutumira: Chikunguru-25-2025
