摘要
为使聚氯乙烯(PVC)/蛭石复合材料的阻燃性能达到GB 8624-2012标准中的B1级(LOI≥32.0%),在复合材料中混入钢渣粉或硫酸钡固体填料,并添加阻燃剂羟基锡酸锌(ZHS)。实验结果显示:当PVC与蛭石的质量比为100∶125时,该复合材料的极限氧指数(LOI)值为26.8%,随着蛭石用量增加,LOI值增加不明显。然而,在m(PVC)∶m(蛭石)=100∶125的混合比基础上,混入耐燃的钢渣粉(SSP)固体填料,发现m(PVC)∶m(蛭石)∶m(SSP)=100∶125∶300为最优混合比,LOI值为29.6%;将SSP替换成另一种固体填料硫酸钡(BaSO4)后,即m(PVC)∶m(蛭石)∶m(BaSO_4)=100∶125∶300时,LOI值为31.0%。在该基础上,继续添加阻燃剂羟基锡酸锌(ZHS),当m(PVC)∶m(蛭石)∶m(BaSO4)∶m(ZHS)=100∶125∶300∶8时,该复合材料的LOI值为35.8%,达到了预期阻燃效果。
In order to make flame retardant property of the PVC/vermiculite composite reach B1 level in GB8624-2012 standard（LOI≥32%）,steel slag powder or BaSO_4 solid filler was mixed in the composite,and fire retardant zinc Stannate（ZHS）was added.The results show that,when mass ratio of PVC and vermiculite is 100∶125,limit oxygen index（LOI）of the composite is 26.8%;with the rise in vermiculite dosage,LIO value increases insignificantly.However,based on m（PVC）∶m（vermiculite）=100∶125,flame-retardant steel slag powder（SSP）solid filler was mixed.It is found that m（PVC）∶m（vermiculite）∶ m（SSP）=100∶125∶300is the optimal mixing ratio,and LIO value is 29.6%.After SSP is replaced by another solid filler（BaSO4）,i.e.m（PVC）∶m（vermiculite）∶ m（SSP）∶ m（BaSO4）=100∶ 125∶ 300∶ 8,LIO value of the omposite is 35.8%.The expected flame retardant efficiency is reached.
出处
《浙江理工大学学报（自然科学版）》
2016年第1期41-46,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
