Nylon (Polyamide, PA) ipurasitiki yeinjiniya inoshanda zvakanyanya inoshandiswa zvakanyanya mumagetsi, mota, machira, nedzimwe nzvimbo. Nekuda kwekubvira kwayo, kugadziriswa kwenylon inodzivirira moto kwakakosha zvikuru. Pazasi pane dhizaini yakadzama uye tsananguro yemafomura ekudzivirira moto enylon, inosanganisira mhinduro dze halogenated ne halogen-free flame retardant.
1. Nheyo dzekugadzira dhizaini yeNylon Flame Retardant
Kugadzirwa kwemhando dze nylon dzinodzora moto kunofanirwa kutevedzera mitemo inotevera:
- Kudzora Murazvo Mukuru: Sangana nezvinodiwa zveUL 94 V-0 kana V-2.
- Kugadzirisa Mashandiro: Zvinhu zvinodzora moto hazvifanirwe kukanganisa zvakanyanya maitiro ekugadzira nylon (semuenzaniso, kuyerera kwemvura, kugadzikana kwekupisa).
- Zvivakwa zveMichina: Kuwedzerwa kwezvinhu zvinodzivisa moto kunofanira kuderedza simba renylon, kuomarara kwayo, uye kuramba kwayo kupfeka.
- Hushamwari Hwezvakatipoteredza: Isa zvinhu zvinoderedza moto zvisina halogen pakutanga kuti zvitevedzere mitemo yezvakatipoteredza.
2. Kuumbwa kweNylon Inodzoreredza Moto Inodzima Halogenated
Zvinhu zvinodzora moto zvine halogenated (semuenzaniso, brominated compounds) zvinokanganisa mashandiro ekupisa nekuburitsa halogen radicals, zvichipa simba guru rekudzivirira moto.
Kuumbwa Kwemaumbirwo:
- Resin yenylon (PA6 kana PA66): 100 phr
- Chinodzora moto chine brominated: 10–20 phr (semuenzaniso, decabromodiphenyl ethane, brominated polystyrene)
- Antimony trioxide (synergist): 3–5 phr
- Mafuta ekuzora: 1–2 phr (semuenzaniso, calcium stearate)
- Antioxidant: 0.5–1 phr (semuenzaniso, 1010 kana 168)
Matanho Ekugadzirisa:
- Premix nylon resin, inodzivirira moto, inoita kuti pave nekubatana, inozora mafuta, uye inorwisa mabhakitiriya zvakaenzana.
- Nyungudutsa uchishandisa chinhu chinoburitsa zvinhu zviviri (twin-screw extruder) wobva waisa pelletize.
- Dzora tembiricha yekubuda kwechinhu pa240–280°C (gadzirisa zvichienderana nerudzi rwenylon).
Hunhu:
- Zvakanakira: Kushanda nesimba kunodzora moto zvakanyanya, huwandu hushoma hwekuwedzera, uye isingadhuri.
- Zvakashata: Kugona kuburitswa kwemagasi ane chepfu panguva yekutsva, kunetseka nezvezvakatipoteredza.
3. Kugadzirwa kweNylon Inodzivirira Moto Isina Halogen
Zvinhu zvinodzora moto zvisina halogen (semuenzaniso, zvine phosphorus, nitrogen, kana inorganic hydroxides) zvinoshanda kuburikidza ne endothermic reactions kana protective layer formation, zvichipa kushanda kwakanaka kwezvakatipoteredza.
Kuumbwa Kwemaumbirwo:
- Resin yenylon (PA6 kana PA66): 100 phr
- Chinodzivirira moto chine phosphorus: 10–15 phr (semuenzaniso, ammonium polyphosphate APP kana phosphorus tsvuku)
- Chinodzivirira moto chakagadzirwa nenitrogen: 5–10 phr (semuenzaniso, melamine cyanurate MCA)
- Hydroxide isina kugayiwa: 20–30 phr (semuenzaniso, magnesium hydroxide kana aruminiyamu hydroxide)
- Mafuta ekuzora: 1–2 phr (semuenzaniso, zinc stearate)
- Antioxidant: 0.5–1 phr (semuenzaniso, 1010 kana 168)
Matanho Ekugadzirisa:
- Premix nylon resin, inodzivirira moto, inozora mafuta, uye inodzivirira hutachiona zvakaenzana.
- Nyungudutsa uchishandisa chinhu chinoburitsa zvinhu zviviri (twin-screw extruder) wobva waisa pelletize.
- Dzora tembiricha yekubuda kwechinhu pa240–280°C (gadzirisa zvichienderana nerudzi rwenylon).
Hunhu:
- Zvakanakira: Inochengetedza nharaunda, haina gasi rine chepfu, inoenderana nemitemo.
- Zvakashata: Kushanda zvishoma kunodzora moto, huwandu hwakawanda hwekuwedzera, uye kukanganisa kunogona kuitika pahunhu hwemakanika.
4. Zvinhu Zvikuru Zvinofanira Kufungwa Nezvekugadzira Fomura
(1) Sarudzo Inodzivirira Murazvo
- Zvinodzora moto zvine halogenated: Inoshanda zvakanyanya asi ine njodzi kunharaunda uye kuhutano.
- Zvinodzora moto zvisina halogen: Haina njodzi kunharaunda asi inoda huwandu hwakawanda uye inogona kukanganisa mashandiro echinhu chacho.
(2) Kushandiswa kweVashandi veSynergists
- Antimony trioxide: Inoshanda pamwe chete ne halogenated flame retardants kuti iwedzere kunonoka kwemurazvo.
- Kubatana kwePhosphorus-nitrogen: Mumasisitimu asina halogen, zvinoderedza moto zvine phosphorus nenitrogen zvinogona kushanda pamwe chete kuti zvivandudze kushanda zvakanaka.
(3) Kupararira uye Kugona Kugadziriswa
- Zvinoparadzira: Iva nechokwadi chekuti zvinhu zvinodzivisa moto zvinopararira zvakaenzana kudzivirira kuwanda kwakanyanya munzvimbo yacho.
- Mafuta ekuzora: Kuvandudza kuyerera kwekugadzirisa uye kuderedza kusakara kwemidziyo.
(4) Mishonga Inorwisa Mabhakitiriya
Dzivisa kuora kwezvinhu panguva yekugadzirisa uye simbisa kugadzikana kwechigadzirwa.
5. Mashandisirwo Akajairika
- Zvigadzirwa zvemagetsi: Zvinhu zvinodzivirira moto zvakaita sezvinobatanidza, maswichi, uye masoketi.
- Mota: Zvinhu zvinodzivirira moto zvakaita semavharo einjini, mawaya ekubatanidza waya, uye zvinhu zvemukati.
- Machira: Machira nemachira anodzivirira moto.
6. Mazano Ekugadzirisa Kugadzirwa Kwemagadzirirwo
(1) Kuvandudza Kushanda Zvisingadzoreki kweMurazvo
- Kusanganisa kunodzivirira moto: Halogen-antimony kana phosphorus-nitrogen synergies yekuvandudza mashandiro.
- Zvinodzora moto weNano: Semuenzaniso, nano magnesium hydroxide kana nano ivhu, kuwedzera kushanda zvakanaka uye kuderedza huwandu hwekuwedzera.
(2) Kuvandudza Hunhu hweMichina
- Vanobata: Semuenzaniso, POE kana EPDM, kuwedzera kusimba kwezvinhu uye kuramba kusimba kwesimba.
- Kusimbisa mafiller: Semuenzaniso, girazi fiber, yekuvandudza kusimba uye kuomarara.
(3) Kuderedza Mutengo
- Gadzirisa zviyero zvinodzora moto: Deredza kushandiswa uku uchizadzisa zvinodiwa zvekunonoka kwemoto.
- Sarudza zvinhu zvinodhura zvishoma: Semuenzaniso, zvinhu zvinodzivirira moto zvemumba kana zvakasanganiswa.
7. Zvinodiwa zvezvakatipoteredza neMitemo
- Zvinodzora moto zvine halogenated: Yakaganhurirwa neRoHS, REACH, nezvimwewo, inoda kushandiswa nekungwarira.
- Zvinodzora moto zvisina halogen: Zvinoenderana nemitemo, zvichimiririra mafambiro eramangwana.
Kugadzirwa kwemafomura e-nylon anodzivisa moto kunofanirwa kufunga nezvemamiriro ezvinhu chaiwo ekushandiswa uye zvinodiwa nemutemo pakusarudza zvinodzivisa moto zvine halogen kana halogen. Zvinodzivirira moto zvine halogen zvinopa kushanda kwakanyanya asi zvine njodzi kunharaunda, nepo dzimwe nzira dzisina halogen dzichichengetedza nharaunda asi dzinoda huwandu hwakawanda hwekuwedzera. Nekugadzirisa mafomura nemaitirwo, zvinhu zve-nylon zvinochengetedza moto zvinobudirira, zvisingakuvadzi nharaunda, uye zvisingadhuri zvinogona kugadzirwa kuti zvizadzise zvinodiwa zvemagetsi, mota, machira, nedzimwe nzvimbo.
More info., pls contact lucy@taifeng-fr.com
Nguva yekutumira: Chivabvu-22-2025
