Mushonga unodzivirira moto weSK Polyester ES500 (UL94 V0 rating).
I. Nzira Yekugadzira Magadzirirwo Ezvinhu
- Kuenderana kweSubstrate
- SK Polyester ES500: Polyester inodziya muviri ine tembiricha yekushanda ye220–260°C. Iyo inodzivisa moto inofanira kutsungirira tembiricha iyi.
- Zvinodiwa Zvikuru: Kuenzanisa kunonoka kwemoto (V0), hunhu hwemakanika (simba rekudhonza/kukanganisa), uye kuyerera kwekushanda kwemuchina.
- Sisitimu Inodzivirira Moto Inobatanidza Synergistic
- Ultrafine Aluminum Hydroxide (ATH): Chinhu chinodzivirira moto zvakanyanya, kushaya mvura mumuviri. Kuisa zvinhu mumoto kunofanira kuenzana nekudzora moto uye hunhu hwemakanika.
- Aluminum Hypophosphite: Char-forming synergist, inoshanda neATH kugadzira phosphorus-aluminium synergistic effect, zvichivandudza kunaka kwechar.
- Zinc Borate: Inowedzera simba remushonga, inodzivira utsi, uye inoita chipingamupinyi chakasimba neATH.
- MCA (Melamine Cyanurate): Inodzora moto wegesi, inoderedza okisijeni uye inodzivirira kudonha kwemvura inonyunguduka.
II. Kugadzirwa Kunokurudzirwa (Huremu Hwepakati)
| Chikamu | Chiyero | Zvinyorwa Zvekugadzirisa |
|---|---|---|
| SK Polyester ES500 | 45–50% | Resin yebase; sarudza giredhi remvura yakawanda kuti utsive kusviba kwefiller. |
| Ultrafine ATH | 25–30% | Yakagadziridzwa pamusoro ne silane coupling agent (KH-550), D50 < 3 μm. |
| Aruminiyamu Hypophosphite | 10–12% | Haipindi kupisa (>300°C), yakasanganiswa neATH uye yakawedzerwa zvishoma nezvishoma. |
| Zinc Borate | 6–8% | Yakawedzerwa pamwe chete neMCA kudzivirira kukuvara kwakanyanya kwechimiro. |
| MCA | 4–5% | Kupisa kwemaitiro < 250°C, kupararira kwemhepo kusingakurumidzi. |
| Muparadziri | 2–3% | Muchina wekuparadzira unoenderana nepolyester (semuenzaniso, BYK-161) + musanganiswa wewakisi wepolyethylene. |
| Mumiriri wekubatanidza (KH-550) | 1% | Inorapa ATH nealuminium hypophosphite; kunyudzwa mu ethanol kwozotevera kuoma. |
| Mushonga Unodzivirira Kudonha | 0.5–1% | PTFE micropowder yekudzivisa kupisa kwekunyunguduka. |
| Rubatsiro rwekugadzirisa | 0.5% | Zinc stearate (inozora mafuta uye inodzivirira kunamira). |
III. Kudzora Maitiro Akakosha
- Kugadzirisa Kupararira
- Kurapa kusati kwaitwa: Nyika ATH nealuminium hypophosphite mu 1% KH-550 ethanol solution kwemaawa maviri, wozoomesa pa 80°C.
- Kusanganisa Kutevedzana:
- Resin yebase + dispersant + coupling agent → Kusanganisa kwekukurumidza kwakaderera (500 rpm, 5 min).
- Wedzera ATH/aluminium hypophosphite yakagadziriswa → High-speed shear (2500 rpm, 20 min).
- Wedzera zinc borate/MCA/PTFE → Kusanganisa nekukurumidza (800 rpm, 10 min).
- Zvishandiso: Chinoburitsa zvinhu zviviri (nzvimbo dzekupisa: nzvimbo yekudyisa 200°C, nzvimbo yekunyunguduka 230°C, nzvimbo yekudiridza 220°C).
- Kugadzirisa Kudzora Kupisa
- Iva nechokwadi chekuti tembiricha yekunyunguduka iri pasi pe250°C kudzivirira kuparara kweMCA (MCA inoora pa250–300°C).
- Mapellets anotonhorera nemvura mushure mekubuda kwemvura kudzivirira kufamba kwezvinodzivisa moto.
IV. Nzira yekubatana inodzivirira moto
- ATH + Aluminium Hypophosphate
- ATH inonwisa kupisa uye inoburitsa utsi hwemvura, ichideredza magasi anobvira moto.
- Aluminum hypophosphite inokonzera kuumbwa kwe dense char (AlPO₄), ichivharira kutamiswa kwekupisa.
- Zinc Borate + MCA
- Zinc borate inoita chidziviriro chakaita segirazi pamusoro pemavanga echar.
- MCA inoora kuti ibudise NH₃, ichideredza okisijeni uye ichidzivisa ma free radical reaction.
- PTFE Inodzivirira Kudonha
- Upfu hwePTFE hunogadzira network ine fibrous, zvichideredza njodzi yekubatidzwa kwemoto nekunyunguduka kwemvura.
V. Kugadzirisa Mashandiro & Kugadzirisa Matambudziko
| Nyaya Inowanzo bvunzwa | Mhinduro |
|---|---|
| Kunonoka kwemurazvo pasi peV0 (V1/V2) | Wedzera aluminium hypophosphite kusvika 12% + MCA kusvika 5%, kana kuwedzera 2% red phosphorus yakavharirwa (inoshanda pamwe chete nealuminium hypophosphite). |
| Kuderedzwa kwehunhu hwemakanika | Deredza ATH kusvika pa25%, wedzera 5% girazi fiber (kusimbisa) kana 3% maleic anhydride-grafted POE (toughening). |
| Kusashanda zvakanaka kwekugadzirisa | Wedzera dispersant kusvika 3%, kana kuwedzera 0.5% low-MW polyethylene wax (kuisira mafuta). |
| Kutumbuka kwepamusoro | Gadzirisa chiyero che coupling agent kana chinja kuita titanate coupling agent (NDZ-201) kuti ubatanidzwe zviri nani pakati pema "interfacial bonding". |
VI. Zviyero zvekusimbisa
- Bvunzo reUL94 V0:
- Zviyero zve 1.6 mm uye 3.2 mm, nguva yese yekutsva < 50 sec mushure mekubatidza kaviri, hapana kudonhedza kwemoto.
- LOI: Chinangwa ≥30% (chaiyo ≥28%).
- Zvimiro zveMichina:
- Simba rekudhonza > 40 MPa, simba rekurovera > 5 kJ/m² (ASTM standard).
- Kugadzikana kweThermal (TGA):
- Zvisaririra zveChar pa800°C > 20%, tembiricha yekutanga yekuora > 300°C.
VII. Muenzaniso weKuronga Mareferensi
| Chikamu | Zviri Mukati (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (yakagadziridzwa) | 28% |
| Aruminiyamu Hypophosphite | 11% |
| Zinc Borate | 7% |
| MCA | 4% |
| BYK-161 Dispersant | 2.5% |
| Mumiriri weK-550 Anobatana | 1% |
| Mumiriri wePTFE Anodzivirira Kudonha | 0.8% |
| Zinc Stearate | 0.5% |
Kugadzirwa uku uye dhizaini yemagadzirirwo zvinobudirira zvinobudirira kuita kuti UL94 V0 flame retardancy yeSK Polyester ES500 ikwanise kushandiswa uye hunhu hwemakanika ikwanise kushandiswa. Kuyedzwa kudiki kunokurudzirwa kuti kusimbiswe kupararira kusati kwagadziriswa zvakanaka (semuenzaniso, kuenzanisa aluminium hypophosphite neMCA). Kuti uwedzere kuwedzera flame retardancy, funga nezvekuwedzera 2% boron nitride nanosheets (BNNS) semuchina wekuzadza unopisa unoshanda kaviri/unodzivirira moto.
More info., pls contact lucy@taifeng-fr.com
Nguva yekutumira: Chikunguru-01-2025
