He tohutoro hanga mura mura mo SK Polyester ES500 (UL94 V0 whakatauranga).
I. Te Huarahi Hoahoa Hanga
- Te Hototahi o te Raupapa
- SK Polyester ES500: He polyester thermoplastic me te pāmahana tukatuka angamaheni o 220–260°C. Me mau te parenga mura ki tenei awhe pāmahana.
- Nga Whakaritenga Matua: Whakatauritea te mura o te mura (V0), nga ahuatanga miihini (te kaha o te kaha / te kaha o te paheketanga), me te rere o te tukatuka.
- Synergistic Flame Retardant System
- Ultrafine Aluminum Hydroxide (ATH): Te mura o te mura tuatahi, te whakamaroketanga endothermic. Ko te uta me taurite te mura o te mura me nga taonga miihini.
- Konumohe Hypophosphite: Ka mahi tahi me te ATH ki te hanga i te ūkuikui-konumohe mahi synergistic, te whakapai ake i te kounga o te char.
- Zinc Borate: Whakanuia te kara, ka pehi i te auahi, ka hanga he arai matotoru me te ATH.
- MCA (Melamine Cyanurate): Ko te hau-waa-waa e mura ana te mura, ka waimeha i te hāora me te aukati i te rewa.
II. Te Whakatairanga Manakohia (Paehe Taumaha)
| Waehanga | ōwehenga | Tukatuka Notes |
|---|---|---|
| SK Polyester ES500 | 45–50% | Kapia turanga; tīpako kōeke wai-nui hei utu mo te pokey whakakī. |
| ATH tino pai | 25–30% | Mata-whakarerekehia me te kaihoko hono silane (KH-550), D50 <3 μm. |
| Konumohe Hypophosphite | 10–12% | Te wera (> 300°C), i konatunatua ki te ATH me te taapiri i nga waahanga. |
| Zinc Borate | 6–8% | Kua taapirihia me te MCA hei karo i te kino o te hanganga kutikuti teitei. |
| MCA | 4–5% | Tukatuka pāmahana <250°C, iti-tere marara. |
| Marara | 2–3% | Te marara hototahi polyester (hei tauira, BYK-161) + polyethylene wax hiato. |
| Kaihono hono (KH-550) | 1% | Tuhinga o mua ATH me te konumohe hypophosphite; te rumaki waihano me te whakamaroke. |
| Agent Anti-Dripping | 0.5–1% | PTFE micropowder ki te pehi rewa mura. |
| Tukatuka Awhina | 0.5% | Zinc stearate (whakahinuhinu me te anti-piri). |
III. Mana Tukatuka Matua
- Te Marara Arotautanga
- Te maimoatanga o mua: Whakanohoia te ATH me te konumohe hypophosphite ki te 1% wairewa waihano KH-550 mo te 2 haora, ka maroke ki te 80°C.
- Raupapa Whakaranu:
- Te kapia turanga + te dispersant + te kaihoko hono → Te whakaranu tere iti (500 rpm, 5 min).
- Tāpirihia te ATH / konumohe hypophosphite kua whakarereketia → Te kutikuti tere tere (2500 rpm, 20 min).
- Taapirihia te zinc borate/MCA/PTFE → Ranu-tere iti (800 rpm, 10 min).
- Taputapu: Maama-screw extruder (rohe pāmahana: rohe whangai 200°C, rohe whakarewa 230°C, mate 220°C).
- Tukatuka Mana Pawera
- Me whakarite te pāmahana rewa <250°C hei aukati i te pirau MCA (ka pirau te MCA ki te 250–300°C).
- Pire matao-wai i muri i te tangohanga hei aukati i te heke mura.
IV. Ko te Hangahanga Hangarau Whakamutunga Te mura
- ATH + Aluminium Hypophosphite
- Ka mimiti te ATH i te wera me te tuku i te kohu wai, ka whakaheke i nga hau mura.
- Ko te hypophosphite konumohe ka whakakorikori i te hanga waro matotoru (AlPO₄), ka aukati i te whakawhitinga wera.
- Zinc Borate + MCA
- Ko te Zinc borate he arai karaihe ki runga i nga kapiti waro.
- Ka pirau te MCA ki te tuku i te NH₃, te waimeha hāora me te aukati i nga tauhohenga tuwhena kore utu.
- PTFE Anti-Dripping
- Ko te micropowder PTFE ka hanga he kupenga kiko, ka whakaiti i te tupono o te rewa.
V. Whakaritenga Mahi me te Raparongoa
| Putanga noa | Rongoā |
|---|---|
| Te mura o te mura i raro i te V0 (V1/V2) | Whakanuia te konumohe hypophosphite ki te 12% + MCA ki te 5%, me te taapiri ranei i te 2% te ūkuikui whero kua whakauruhia (he synergistic me te konumohe hypophosphite). |
| Te whakaheke i nga taonga miihini | Whakaitihia te ATH ki te 25%, taapirihia te 5% muka karaihe (whakakaha) me te 3% maleic anhydride-grafted POE (whakakaha). |
| He pai te rere o te tukatuka | Whakanuia te dispersant ki te 3%, ka taapirihia ranei te 0.5% iti-MW polyethylene wax (whakahinuhinu). |
| Puanga mata | Whakapaihia te inenga a te kaihoko hono, huri ranei ki te kaihoko hononga titanate (NDZ-201) kia pai ake te hononga atanga. |
VI. Inenga Whakamana
- UL94 V0 Whakamātautau:
- 1.6 mm me te 3.2 mm nga tauira, te taima wera katoa < 50 hekona i muri i nga mura e rua, karekau he pupuhi pupuhi.
- LOI: Ko te ≥30% te whaainga (tino ≥28%).
- Ngā Āhuatanga Hangarau:
- Te kaha kaha > 40 MPa, te kaha o te paanga > 5 kJ/m² (paerewa ASTM).
- Pūmautanga Ngawha (TGA):
- Ko te toenga o te wa i te 800°C > 20%, te pāmahana whakapohehe tuatahi > 300°C.
VII. Tauira Tohutoro Whakatairanga
| Waehanga | Ihirangi (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (whakarerekehia) | 28% |
| Konumohe Hypophosphite | 11% |
| Zinc Borate | 7% |
| MCA | 4% |
| BYK-161 Marara | 2.5% |
| KH-550 Kaihono Kaihono | 1% |
| PTFE Anti-Dripping Agent | 0.8% |
| Zinc Stearate | 0.5% |
Ko tenei hanganga me te hoahoa tukanga ka tutuki pai te UL94 V0 te mura o te mura mo SK Polyester ES500 i te wa e whakataurite ana i te kaha o te mahi me nga taonga miihini. Ka tūtohuhia nga whakamatautau iti hei manatoko i te whakamararatanga i mua i te whakatikatika pai (hei tauira, te whakataurite i te konumohe hypophosphite me te MCA). Mo te whakapai ake i te mura o te mura, whakaarohia te taapiri i te 2% boron nitride nanosheets (BNNS) hei whakakī waiariki mahi-rua.
More info., pls contact lucy@taifeng-fr.com
Wā tuku: Hūrae-01-2025
