| Influence of flame-retardant synergist on properties of PVC/PNBR TPE |
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| DOI： |
| Key Words: PVC；PNBR；TPE；magnesium hydroxide；flame retardant synergist |
| Author Name | Affiliation | | LIN Long | Nanjing University of Technology | | ZHANG Jun | Nanjing University of Technology | | CHU Jie | Nanjing University of Technology |
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| Abstract: |
| A PVC/PNBR TPE was prepared based on PVC and powdered NBR(PNBR) using magnesium hydroxide(MH) as flame retardant，and the influence of the flame-retardant synergists，such as diantimony trioxide(Sb2O3)，zinc borate(ZB)，ammonium heptomolybdate(AOM)，zinc oxide(ZnO) and manganese dioxide(MnO2) on the properties of above TPE was investigated.The results showed that a PVC/PNBR TPE with good properties was obtained by using 77/23 PVC/PNBR，50 phr DOP and 31 phr MH；the addition level of MH had little effect on the oxygen exponent of TPE；the oxygen exponent of TPE significantly increased and its comprehensive physical properties improved when 4.6 phr Sb2O3，6.2 phr ZB，1.5 phr AOM or 6.2 phr ZnO were respectively used in TPE；and MnO2 had little synergistic effect. |
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