Te Hanganga Tohutoro Ārai Mumura Kore-Halogen PBT
Hei whakapai ake i te hanganga o ngā aukati mura kore-halogen mō te PBT, he mea nui kia whakatauritehia te whai huatanga o te aukati mura, te pumau wera, te hototahi pāmahana tukatuka, me ngā āhuatanga miihini. Kei raro nei he rautaki whakaranu kua whakapai ake me ngā tātaritanga matua:
1. Ngā Huinga Ārai Mura Matua
Kōwhiringa 1: Konumohe Hypophosphite + MCA (Melamine Cyanurate) + Konutea Borate
Tikanga:
- Konumohe Hipōhowhita (Te pumau wera > 300°C): Ka whakatairanga i te hanganga waro i te wāhanga whakakōpikopiko, ka tukuna hoki ngā rauropi PO· i te wāhanga hau hei whakakore i ngā tauhohenga mekameka mura.
- MCA (Pirautanga i te ~300°C): Ka tukuna e te pirau endothermic ngā hau kore mahi (NH₃, H₂O), ka whakawaiwai i ngā hau mura, ka pehi hoki i te maturuturu rewa.
- Konutea Pōrata (Te Pirau > 300°C): Ka whakarei ake i te hanganga o te waro karāhe, ka whakaiti i te paoa me te kanapa i muri mai.
Tauwehenga i Manakohia:
- Konumohe Hipofosfit (10-15%) + MCA (5-8%) + Konutea Pōrata (3-5%).
Kōwhiringa 2: Konupūmā Waikawa Kua Whakarerekētia ki te Mata + Konumohe Hipōhospita + Pūmua Phospinate (hei tauira, ADP)
Tikanga:
- Te Waikawa Konupora Kua Whakarerekētia (Te Pirau ~300°C): Ka whakapai ake te maimoatanga mata (silane/titanate) i te marara me te pumau o te wera; ka whakaitihia te pāmahana o te rauemi e te whakamatao wera-whakarewa.
- Phosphinate Waro (hei tauira, ADP, pumau wera > 300°C): He tino whai hua te aukati mura hau-āhua, e mahi tahi ana me ngā pūnaha phosphorus-hauota.
Tauwehenga i Manakohia:
- Konupora Waikawa (15-20%) + Konumohe Hipōhospita (8-12%) + ADP (5-8%).
2. Ngā Kaitautoko Āwhina Kōwhiringa
- Nano-uku/Talc (2-3%): Ka whakapai ake i te kounga o te waro me ngā āhuatanga miihini, me te whakaiti i te uta o te aukati mura.
- PTFE (0.2-0.5%): He mea ārai i te maturuturu hei ārai i ngā pata e mura ana.
- Paura Hiraka (2-4%): Ka whakatairanga i te hanganga o te waro matotoru, ka whakarei ake i te ātete mura me te kanapa o te mata.
3. Ngā Whakakotahitanga hei Ārai
- Konumohe Hauwaiora: Ka pirau i te 180-200°C (i raro iho i te pāmahana tukatuka PBT o te 220-250°C), ka hua ake te pirau wawe.
- Konupora Waikawa Kāore i Whakarerekētia: Me rongoā te mata hei ārai i te haaputupututanga me te pirau wera i te wā e tukatukahia ana.
4. Ngā Tohutohu Arotau Mahi
- Maimoatanga Mata: Whakamahia ngā kaihoko hononga silane ki te Mg(OH)₂ me te konutea borate hei whakarei ake i te marara me te hononga ā-mata.
- Whakahaere Pāmahana Tukatuka: Me whakarite kia neke ake i te 250°C te pāmahana pirau ātete mura hei karo i te pirau.
- Taurite Āhuatanga Mīhini: Whakakapia te ngaronga o te kaha mā te whakamahi i ngā whakakī-nano (hei tauira, SiO₂) me ngā whakakaha rānei (hei tauira, POE-g-MAH).
5. Tauira Whakatakotoranga
| Ārai Mura | Utaina (wt%) | Mahi |
|---|---|---|
| Konumohe Hypophosphite | 12% | Ārai mura matua (wāhanga whakakōpikopiko + wāhanga hau) |
| MCA | 6% | Ārai mura hau-āhua, pehi paowa |
| Konutea Pōrata | 4% | Te hanganga waro mahi tahi, te whakaiti paowa |
| Nano Talc | 3% | Whakakaha waro, whakarei ake miihini |
| PTFE | 0.3% | Ārai-maturuturu |
6. Ngā Inenga Whakamātautau Matua
- Ātete Mura: UL94 V-0 (1.6mm), LOI > 35%.
- Te Pūmautanga o te Wera: Te toenga TGA > 25% (600°C).
- Ngā Āhuatanga Ā-ringa: Kaha kume > 45 MPa, pānga kōhao > 4 kJ/m².
Mā te whakatikatika i ngā ōwehenga, ka taea te whakatutuki i te ātete mura kore-halogen tino whai hua me te pupuri tonu i te mahi whānui a te PBT.
More info., pls send email to lucy@taifeng-fr.com
Wā tuku: Hōngongoi-08-2025
