为了降低熔喷无纺布的生产成本,以聚丙烯(PP)为基料,采用降解母粒降解法制备熔喷PP专用料。研究了不同降解剂[2,5-二甲基-2,5双(叔丁基过氧基)己烷(DBPH)、过氧化二异丙苯DCP和过氧化苯甲酰(BPO)]对PP专用料性能的影响。结果表明:降解剂DBPH对PP树脂的降解效果最佳,当DBPH降解母粒含量为10%时,材料的流动性能最好,相对分子量最小,分子量分布最窄,热学性能也较好。采用化学降解法可以制备熔喷无纺布PP专用料。
In oeder to reduce the production cost of melt-blow nonwovens,the polypropylene (PP) special resins was prepared by degradable masterbatch method,using PP as base resin.The effects of different degradation agent {[2,5-dimethyl-2,5-di (tert-butylperoxy) hexane](DBPH),dicumyl peroxide(DCP),benzoyl peroxide(BPO)} on the properties of PP special resins were studied.The results shown that the degradation action of DBPH degradation agent on PP resins was the best.At DBPH degradable master grain content of 10%,the PP special resin had the best flow property,the smallest relative molecular weight,the narrowest molecular weight distribution,and the good thermal properties.The PP special resin for melt-blown nonwovens can be prepared by chemical degradation process.
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基金资助
福州市新冠肺炎防控专项项目(2020-XG-004);闽江学院科研项目(YSZ20007)
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