Kuumbwa kwePBT Halogen-Isina Murazvo Unodzivirira Murazvo

Kuumbwa kwePBT Halogen-Isina Murazvo Unodzivirira Murazvo

Kuti pave nekugadzirwa kwezvinodzivirira moto zvisina halogen zvePBT, zvakakosha kuti pave nekuenzanisa kushanda zvakanaka kwezvinodzivirira moto, kugadzikana kwekupisa, kuenderana kwekupisa kwemuchina, uye hunhu hwemakanika. Pazasi pane nzira yakagadziriswa yekubatanidza zvinhu nekuongorora kwakakosha:

1. Musanganiswa weCore Flame Retardant

Sarudzo 1: Aluminum Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate

Maitiro:

• Aluminium Hypophosphite (Kugadzikana kweThermal > 300°C): Inokurudzira kuumbwa kwechar muchikamu chakakomberedzwa uye inoburitsa PO· radicals muchikamu chegasi kuti imise maitiro ekupisa.
• MCA (Kuora pa ~300°C): Kuora kwe endothermic kunoburitsa magasi asina simba (NH₃, H₂O), zvichideredza magasi anobvira uye zvinoderedza kudonha kwemvura inonyunguduka.
• Zinc Borate (Kuora > 300°C): Inowedzera kugadzirwa kwechai yakaita segirazi, inoderedza utsi uye kubwinya kunotevera.

Chiyero Chinokurudzirwa:

• Aruminiyamu Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

Sarudzo 2: Magnesium Hydroxide Yakagadziriswa Pamusoro + Aluminum Hypophosphite + Organic Phosphinate (semuenzaniso, ADP)

Maitiro:

• Magnesium Hydroxide Yakagadziriswa (Kuora ~300°C): Kugadziriswa kwepamusoro (silane/titanate) kunovandudza kupararira uye kugadzikana kwekupisa; kutonhora kwe endothermic kunoderedza tembiricha yezvinhu.
• Organic Phosphinate (semuenzaniso, ADP, kugadzikana kwekupisa > 300°C): Inodzivirira moto zvine simba guru, inoshanda pamwe chete nemaitiro ephosphorus-nitrogen.

Chiyero Chinokurudzirwa:

• Magnesium Hydroxide (15-20%) + Aluminum Hypophosphite (8-12%) + ADP (5-8%).

2. Vatsigiri veSarudzo

• Nano-clay/Talc (2-3%): Inovandudza hunhu hwechar uye hunhu hwemakanika uku ichideredza mutoro unodzivirira moto.
• PTFE (0.2-0.5%): Mushonga unodzivirira madonhwe emvura kudzivirira madonhwe emvura kutsva.
• Silicone Powder (2-4%): Inokurudzira kuumbwa kwechani chakasimba, ichivandudza kunonoka kwemurazvo uye kupenya kwepazasi.

3. Misanganiswa Yekudzivirira

• Aluminium Hydroxide: Inoora pa 180-200°C (pasi pekupisa kwePBT kwe220-250°C), zvichikonzera kuora nguva isati yakwana.
• Magnesium Hydroxide Isina Kugadziriswa: Inoda kugadziriswa pamusoro pechinhu kudzivirira kuungana kwechinhu uye kuora kwekupisa panguva yekugadzirisa.

4. Mazano ekugadzirisa mashandiro

• Kurapa Pamusoro: Shandisa zvinhu zvinobatanidza silane paMg(OH)₂ uye zinc borate kuti uwedzere kupararira uye kubatana kweinterfacial.
• Kudzora Kupisa Kwemuchina: Iva nechokwadi chekuti tembiricha yekuora kwemoto inodzivisa moto inosvika > 250°C kudzivirira kuora.
• Kuenzanisa Kwezvinhu Zvemuchina: Kubhadhara kurasikirwa kwesimba uchishandisa nano-fillers (semuenzaniso, SiO₂) kana tougheners (semuenzaniso, POE-g-MAH).

5. Muenzaniso wekugadzira

6. Zviyero Zvikuru zveKuedza

• Kudzivirira Murazvo: UL94 V-0 (1.6mm), LOI > 35%.
• Kugadzikana kwekupisa: TGA residue > 25% (600°C).
• Hunhu hweMuchina: Simba rekudhonza > 45 MPa, kukanganiswa kwakachekwa > 4 kJ/m².

Nekugadzirisa zviyero, kugona kwakanyanya kwekudzivirira moto usina halogen kunogona kuitwa ukuwo PBT ichiramba ichishanda zvakanaka.

More info., pls send email to lucy@taifeng-fr.com