Kuumbwa kwePVC Flame Retardant Masterbatch Reference
Kugadzira nekugadzirisa magadzirirwo ePVC flame retardant masterbatch formulations, kusanganisira mafire retardant aripo uye zvinhu zvakakosha zvekubatana, zvichinanga UL94 V0 flame retardancy (inogadziriswa kuV2 nekuderedza huwandu hwekuwedzera).
I. Kurudziro yeForamu Yekutanga (PVC Yakasimba)
Kuumbwa kwePlastiki Rinodzivirira Murazvo:
| Chikamu | Kurodha (wt%) | Tsananguro yeBasa |
|---|---|---|
| PVC resin (rudzi rweSG-5) | 40-50% | Zvinhu zvematrix, zviri nani kuti mafuta asanyurwe zvakanyanya |
| Aruminiyamu hypophosphate | 12-15% | Asidhi inoburitsa machar, inoderedza kubwinya kwemashure |
| Zinc borate | 8-10% | Kuderedza utsi nenzira inoshanda pamwe chete, kunopindirana neHCl kubva pakuora kwePVC |
| Aruminiyamu hydroxide yakagadziriswa pamusoro | 10-12% | Kutonhodza kwe endothermic, kunoda silane coupling agent coupling coupling (tembiricha yekuora inoenderana nePVC processing) |
| Antimony trioxide (Sb₂O₃) | 3-5% | Kubatana kukuru, kunowedzera kunonoka kwemurazvo kuburikidza nekubatana kweCl-Sb |
| Zinc molybdate (chinhu chinodzvinyirira utsi) | 5-8% | Chinowedzerwa chinokurudzirwa, chinoderedza kuwanda kweutsi (kiyi yekutevedzera DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Rubatsiro rwekugadzira char, runovandudza kudzora kunyunguduka kwemvura |
| Chinosimbisa kupisa (Ca-Zn composite) | 3-4% | Zvakakosha kudzivirira kuora kwekupisa panguva yekugadzirisa |
| Plasticizer (DOP kana eco-alternative) | 0-8% | Gadzirisa kuomarara (sarudzo yePVC yakaoma) |
| Mafuta anozora (calcium stearate) | 1-1.5% | Inovandudza kugona kwekugadzirisa, inodzivirira kunamatira kweroller |
| Rubatsiro rwekugadzirisa (ACR) | 1-2% | Inovandudza plasticization uye masterbatch dispersion |
II. Nheyo dzeKugadzirisa Zvinhu Zvikuru
- Sisitimu yeMurazvo Inodzivirira Kubatana
- Kubatana kweCl-Sb: Chlorine inowanikwa muPVC (56%) pamwe chete ne3-5% Sb₂O₃ inoumba chipingamupinyi cheSbCl₃, zvichiita kuti gasi-phase/condensed-phase dual-action fire retardancy irambe iripo.
- Kuderedza Utsi: Zinc molybdate + zinc borate inoderedza huwandu hweutsi ne >40% (ASTM E662).
- Kuvandudza Char: Aluminum hypophosphite + DPE inogadzira cross-linked phosphoric ester char pa 200–250°C, zvichitsiva kushomeka kwechar yePVC padanho rekutanga.
- Kugadzirisa Kuchinjika
- Kuenzanisa Tembiricha: Aluminum hypophosphite (kuora ≥250°C) uye Al(OH)₃ (yakagadzikana kusvika >200°C) inokodzera kugadzirwa kwePVC (160–190°C).
- Kuvimbisa Kugadzikana: Zvigadzirisi zveCa-Zn zvinodzivirira kuora kwe resin kubva pakuburitswa kweHCl; ACR inobatsira plasterization mumasisitimu ane filler yakawanda.
- Kuenzanisa Kwekushanda
- Kutakura kwese kunodzora moto: 35–45%, kuchengetedza simba rekusunga ≥80% (kazhinji ≥40 MPa yePVC yakasimba).
- Kuti zvikwanise kuchinjika (PVC inochinjika), tsiva DOP ne 8% epoxidized soybean oil (dual plasticizer/flame retardant).
III. Zviyero zveKuedza & Kusimbisa
Kudzivirira Murazvo:
- UL94 V0 (ukobvu hwe1.6 mm)
- Kuganhurira Okisijeni Index (LOI) ≥32%
Kudzora Utsi:
- Bvunzo yekamuri yeutsi yeNBS: Huru hwakanyanya hwekuona densityDs≤150 (nzira yekupisa)
Zvimiro zveMichina:
- Simba rekudhonza ≥35 MPa (yakaomarara), kureba panguva yekutyoka ≥200% (inochinjika)
Kugadzikana kwekupisa:
- DMA inosimbisa kuti hapana kudonha kwe modulus pa 180°C.
IV. Kugadzirisa Mari Uye Zvisina Kusvibisa Ruzivo
Imwe nzira inodhura zvishoma:
- Deredza zinc molybdate kusvika pa3%, tsiva Al(OH)₃ neMg(OH)₂ zvishoma (wedzera kusvika pa15%).
Mhinduro Isina Antimoni:
- Bvisa Sb₂O₃, shandisa 2% aruminiyamu diethylphosphinate + 5% nano-kaolin (kushanda kwakaderera zvishoma; kunoda ukobvu hwe3 mm hweV0).
Kukosha kweUtsi:
- Wedzera 1% silicone resin-coated carbon black kuti uderedze huwandu hweutsi ne15%.
V. Nhungamiro dzeKugadzirisa
- Kusanganisa Kutevedzana:
PVC resin → stabilizer + lubricant → flame restorants (yakaderera kusvika yakanyanya kusimba) → plasticizer (yekupedzisira yakawedzerwa spray). - Kugadzirisa Tembiricha:
Nzvimbo dzekuburitsa zvinhu zvine sikuruu mbiri: 160°C (kudyisa) → 170°C (kunyunguduka) → 180°C (kusanganisa) → 175°C (musoro wekufa). - Kuisa pfungwa paMasterbatch:
Zvinokurudzirwa kuti 50% ikwane; sanganisa 1:1 nePVC isina kuvharwa kuti ishandiswe pakuumba majekiseni.
Mushonga uyu unoenzanisa kunonoka kwemoto zvakanyanya, utsi hushoma, uye kugadzikana kwekugadzirisa. Kuyedzwa kudiki kunokurudzirwa usati wawedzera, nekugadzirisa zvichienderana nechimiro chechigadzirwa (mapepa, tambo, nezvimwewo).
More info., pls contact lucy@taifeng-fr.com
Nguva yekutumira: Chikunguru-08-2025
