CN105111601A - 一种无卤阻燃聚丁烯-1材料的制备方法 - Google Patents
一种无卤阻燃聚丁烯-1材料的制备方法 Download PDFInfo
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Abstract
本发明涉及一种无卤阻燃聚丁烯-1材料的制备方法,步骤一,将无卤阻燃剂在60℃-80℃条件下干燥;步骤二,将原料按照配方比例进行预混,使得各原料初步混合均匀,得到预混料,其中:所述原料以重量份数计,由以下原料组成:聚丁烯-1为?60-90份,抗氧剂为0.3-3份,无卤阻燃剂为3-35份,耐高温润滑剂为0-4份;步骤三,将步骤二得到的预混料加入双螺杆挤出机中进行混炼,其中:所述的双螺杆挤出机的螺杆为同向双螺杆,螺杆直径为25mm;长径比为1:30;所述的双螺杆挤出机的转速为120r/min;?所述的双螺杆挤出机分为四个区,从喂料口到机头依次为一至四区;机头温度为175℃;步骤四,将从双螺杆挤出机中出来的物料进行风冷,造粒,得到无卤阻燃聚丁烯-1材料。
Description
技术领域
本发明申请为申请日2013年08月27日,申请号为:201310380104.5,名称为“一种无卤阻燃聚丁烯-1材料”的发明专利申请的分案申请。本发明属于改性塑料领域,涉及一种无卤阻燃材料的制备方法,尤其涉及一种无卤阻燃聚丁烯-1材料的制备方法。
背景技术
聚丁烯-1具有良好的物理力学性能,突出的抗蠕变性,耐低温性,耐环境应力开裂性和高填料填充性。它不仅有良好的介电性和耐化学药品性,而且有很好的机械强度和高韧性。它的屈服值、拉伸强度、冲击强度分别是LDPE的2倍、6-10倍、3-4倍。与其它聚烯烃相比,聚丁烯-1的耐应力开裂性最好。耐蠕变性比聚乙烯、聚丙烯高,在不超过屈服点的应力作用下突出的耐蠕变性一直到80℃仍保持不变。
阻燃剂分为卤素阻燃剂和无卤阻燃剂。目前卤素阻燃剂仍然占据着主导地位,因为它阻燃效果好,可以满足很多塑料制品的阻燃要求。但它在燃烧过程中,产生较多的烟雾和有毒的腐蚀性气体(如溴化氢)。这种气体在火灾中非常危险,因为它扩散速度极快,在火灾中严重妨碍了消防人员的扑救工作,给人民的生命财产造成了极大的危害。火灾发生时,这类含卤阻燃材料会产生大量的烟雾和有毒的腐蚀性卤化氢气体,造成成二次危害。
鉴于卤素阻燃剂的严重弊端,寻找卤素阻燃剂的替代品-无卤阻燃剂就提上日程。新的阻燃体系,燃烧时发烟量小,不产生有毒、腐蚀性气体。无卤阻燃添加剂主要分为无机和有机两大类,这两类化合物,燃烧时不挥发、不产生腐蚀性气体,被称为无公害阻燃剂。
发明内容
本发明设计了一种无卤阻燃聚丁烯-1材料的制备方法,其目的在于,提供一种无卤阻燃聚丁烯-1材料及其制备方法,在保持力学性能的前提下,提供一种阻燃性能良好且对环境无污染的阻燃材料。
为了实现上述目的,本发明采用了以下方案:
一种无卤阻燃聚丁烯-1材料,其特征在于以重量份数计,由以下原料组成:聚丁烯-1为60-90份,抗氧剂为0.3-3份,无卤阻燃剂为3-35份,耐高温润滑剂为0-4份。
所述的聚丁烯-1的结晶度为60%-80%。
所述抗氧剂为多酚抗氧剂1076和复合抗氧剂215质量比1:2组成的复合抗氧剂。
所述的耐高温润滑剂为石墨。
所述的无卤阻燃剂为磷酸酯、膦酸酯或氧化膦。
一种无卤阻燃聚丁烯-1材料的制备方法,其特征在于该方法按照以下步骤进行:
步骤一,将无卤阻燃剂在60℃-80℃条件下干燥;
步骤二,将原料按照配方比例进行预混,使得各原料初步混合均匀,得到预混料,其中:
所述原料以重量份数计,由以下原料组成:聚丁烯-1为60-90份,抗氧剂为0.3-3份,无卤阻燃剂为3-35份,耐高温润滑剂为0-4份;
步骤三,将步骤二得到的预混料加入双螺杆挤出机中进行混炼,其中:
所述的双螺杆挤出机的螺杆为同向双螺杆,螺杆直径为25mm;长径比为1:30;
所述的双螺杆挤出机的转速为120r/min;
所述的双螺杆挤出机分为四个区,从喂料口到机头依次为一至四区,一区温度为160℃;二区温度为165℃;三区温度为175℃;四区温度为180℃;机头温度为175℃;
步骤四,将从双螺杆挤出机中出来的物料进行风冷,造粒,得到无卤阻燃聚丁烯-1材料。
该无卤阻燃聚丁烯-1材料具有以下有益效果:
本发明的无卤阻燃聚丁烯-1材料在达到较高的氧指数和阻燃级别后,还具有良好的力学性能,采用无卤阻燃剂对环境友好,火灾时不会产生有害气体,影响人们的生命安全;采用有机膦系无卤阻燃剂,具有添加量较少,对制品的力学性能影响较小的优点;制得的无卤阻燃聚丁烯-1材料具有较好的阻燃效果和良好的力学性能,有广阔的应用空间。
有机磷系阻燃剂是阻燃剂中最重要的品种之一,具有阻燃和增塑双重功效,可以使阻燃完全实现无卤化,改善塑料成型中的流动性能,抑制燃烧后的残余物,产生的毒性气体和腐蚀性气体比卤素阻燃剂少,其阻燃机理为:一方面阻燃剂受热分解产生磷酸、偏磷酸、聚偏磷酸,这些含磷酸具有强烈的脱水性,可使聚合物表面脱水炭化,而单质碳不能发生产生火焰的蒸发燃烧和分解燃烧,所以具有阻燃作用;另一方面阻燃剂受热产生PO·自由基,可大量吸收H·HO·自由基,从而中断燃烧反应。有机磷系阻燃剂主要有磷酸酯、膦酸酯、及氧化膦以及杂环类等。
具体实施方式
下面结合具体实施例,对本发明做进一步说明:
实施例1
无卤阻燃聚丁烯-1材料的组分为:
聚丁烯-1为60份,多酚抗氧剂1076和复合抗氧剂215质量比1:2组成的复合抗氧剂为0.5份,磷酸酯无卤阻燃剂为35份,石墨为4份,聚丁烯-1的结晶度为60%-80%。
实施例2
无卤阻燃聚丁烯-1材料的组分为:
聚丁烯-1为70份,多酚抗氧剂1076和复合抗氧剂215质量比1:2组成的复合抗氧剂为3份,膦酸酯无卤阻燃剂为25份,石墨为2份,聚丁烯-1的结晶度为60%-80%。
实施例3
无卤阻燃聚丁烯-1材料的组分为:
聚丁烯-1为80份,多酚抗氧剂1076和复合抗氧剂215质量比1:2组成的复合抗氧剂为2份,膦酸酯无卤阻燃剂为10份,石墨为3份,聚丁烯-1的结晶度为60%-80%。
实施例4
无卤阻燃聚丁烯-1材料的组分为:
聚丁烯-1为90份,多酚抗氧剂1076和复合抗氧剂215质量比1:2组成的复合抗氧剂为1份,氧化膦无卤阻燃剂为5份,石墨为1份,聚丁烯-1的结晶度为60%-80%。
上述无卤阻燃聚丁烯-1材料的制备方法按照以下步骤进行:
步骤一,将无卤阻燃剂在60℃-80℃条件下干燥;
步骤二,将原料按照配方比例进行预混,使得各原料初步混合均匀,得到预混料;
步骤三,将步骤二得到的预混料加入双螺杆挤出机中进行混炼,其中:
双螺杆挤出机的螺杆为同向双螺杆,螺杆直径为25mm;长径比为1:30。
双螺杆挤出机的转速为120r/min;
双螺杆挤出机分为四个区,从喂料口到机头依次为一至四区,一区温度为160℃;二区温度为165℃;三区温度为175℃;四区温度为180℃;机头温度为175℃;
步骤四,将从双螺杆挤出机中出来的物料进行风冷,造粒,得到无卤阻燃聚丁烯-1材料。
制备得到上述无卤阻燃聚丁烯-1材料后,对其进行性能测试时需要在加硫成型试验机中模压成型,工艺条件为:热压175℃,保压10min;冷压保压5min,压力为10MPa。
本发明的无卤阻燃聚丁烯-1材料在达到较高的氧指数基本为30%-36%和阻燃级别后,还具有良好的力学性能其弯曲强度在16.5MPa之上。
有机磷系阻燃剂是阻燃剂中最重要的品种之一,具有阻燃和增塑双重功效,可以使阻燃完全实现无卤化,改善塑料成型中的流动性能,抑制燃烧后的残余物,产生的毒性气体和腐蚀性气体比卤素阻燃剂少,其阻燃机理为:一方面阻燃剂受热分解产生磷酸、偏磷酸、聚偏磷酸,这些含磷酸具有强烈的脱水性,可使聚合物表面脱水炭化,而单质碳不能发生产生火焰的蒸发燃烧和分解燃烧,所以具有阻燃作用;另一方面阻燃剂受热产生PO·自由基,可大量吸收H·HO·自由基,从而中断燃烧反应。有机磷系阻燃剂主要有磷酸酯、膦酸酯、及氧化膦以及杂环类等。
上面结合具体实施例对本发明进行了示例性的描述,显然本发明的实现并不受上述方式的限制,只要采用了本发明的方法构思和技术方案进行的各种改进,或未经改进将本发明的构思和技术方案直接应用于其它场合的,均在本发明的保护范围内。
Claims (1)
1.一种无卤阻燃聚丁烯-1材料的制备方法,其特征在于该方法按照以下步骤进行:
步骤一,将无卤阻燃剂在60℃-80℃条件下干燥;
步骤二,将原料按照配方比例进行预混,使得各原料初步混合均匀,得到预混料,其中:
所述原料以重量份数计,由以下原料组成:聚丁烯-1为60-90份,抗氧剂为0.3-3份,无卤阻燃剂为3-35份,耐高温润滑剂为0-4份;
步骤三,将步骤二得到的预混料加入双螺杆挤出机中进行混炼,其中:
所述的双螺杆挤出机的螺杆为同向双螺杆,螺杆直径为25mm;长径比为1:30;
所述的双螺杆挤出机的转速为120r/min;
所述的双螺杆挤出机的转速为120r/min;
所述的双螺杆挤出机分为四个区,从喂料口到机头依次为一至四区,一区温度为160℃;二区温度为165℃;三区温度为175℃;四区温度为180℃;机头温度为175℃;
步骤四,将从双螺杆挤出机中出来的物料进行风冷,造粒,得到无卤阻燃聚丁烯-1材料。
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