摘要
以PVC和粉末丁腈橡胶(PNBR)为主体材料,氢氧化镁为阻燃剂,制备PVC/PNBR共混型热塑性弹性体,研究阻燃协效剂三氧化二锑、硼酸锌、七钼酸铵、氧化锌和二氧化锰对弹性体性能的影响。结果表明,当PVC、PNBR、邻苯二甲酸二辛酯和氢氧化镁的用量分别为77,23,50和31份时,PVC/PNBR共混型热塑性弹性体性能良好;氢氧化镁的用量对弹性体氧指数基本无影响;在弹性体中分别单独使用4.6,6.2,1.5和6.2份三氧化二锑、硼酸锌、七钼酸铵和氧化锌时,弹性体的氧指数明显提高,综合物理性能较好,但二氧化锰协同效果不好。
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.
出处
《橡胶工业》
CAS
北大核心
2005年第12期720-724,共5页
China Rubber Industry
