CN102775781B - 阻燃玻纤增强pa610/pa612合金组合物及其制备方法 - Google Patents

阻燃玻纤增强pa610/pa612合金组合物及其制备方法 Download PDF

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CN102775781B
CN102775781B CN201210247273.7A CN201210247273A CN102775781B CN 102775781 B CN102775781 B CN 102775781B CN 201210247273 A CN201210247273 A CN 201210247273A CN 102775781 B CN102775781 B CN 102775781B
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郭建鹏
杨涛
孟成铭
陈晓东
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Shanghai Rizhisheng New Technology Development Co Ltd
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Abstract

本发明涉及一种阻燃玻纤增强PA610/PA612合金组合物及其制备方法，所述组合物包括以下重量百分比含量的各组分：PA610 20-41％，PA612 20-41％，复配阻燃母粒0-15％，玻璃纤维20-40%，抗氧剂0.1-1％，润滑分散剂0.1-1％；所述组合物的制备方法包括如下步骤：按重量配比称取各组分，放入高混机中混合2～5分钟，出料，然后用双螺杆挤出机挤出造粒，加工温度在235～260℃，螺杆转数在30～40HZ。与现有技术相比，本发明的组合物具有高CTI值、低阻燃剂析出性、无卤环保、综合性能均衡等优势，可以广泛应用于接触器、漏电保护器、断路器外壳等电子电器领域的产品。

Description

阻燃玻纤增强PA610/PA612合金组合物及其制备方法
技术领域
本发明涉及一种阻燃玻纤增强合金材料，具体涉及一种阻燃玻纤增强PA610/PA612合金组合物及其制备方法。
背景技术
近年来，我国电子电气工业迅速发展，对高电绝缘阻燃增强工程塑料的需求日益增长，如低压真空接触器、断路器、漏电保护器、接插件、低压开关、薄壁电子电气元件等都需要用具有良好的综合力学性能、阻燃性能及电绝缘性能的工程塑料材料。在这一产品领域里，聚酰胺（PA）的用量最大。然而，由于阻燃剂的发展相对行业对材料日益提高的要求来说滞后，很多种阻燃剂加入到材料里会大大降低了材料的力学性能、电绝缘性能。例如，相比漏电起痕指数（CTI）从600V降到200V甚至更低，此外，随着欧盟RoHs和WEEE指令的实施，传统的溴系阻燃体系已不能满足此要求，同时某些阻燃剂的使用也会受到限制。随着技术的进步工程塑料国产化的进程也在加快。上海日之升新技术发展有限公司针对高CTI值、低阻燃剂析出性阻燃玻纤增强PA610/PA612产品进行了深入的研究。所研制的高CTI值、低阻燃剂析出性、阻燃玻纤增强PA610/PA612合金产品成功地替代了BASF等公司生产的同类产品，实现了该类产品的国产化，在被一些外资企业纳入原料国产化计划的同时，该材料也开始出口到欧美地区。
发明内容
本发明的目的在于克服上述现有技术存在的缺陷，提供一种阻燃玻纤增强PA610/PA612合金组合物及其制备方法。本发明的组合物具有高CTI值、低阻燃剂析出性，无卤环保，综合性能均衡等优点，可以广泛应用于接触器、漏电保护器、断路器外壳等电子电器领域的产品。
本发明的目的是通过以下技术方案来实现的：
本发明涉及一种阻燃玻纤增强PA610/PA612合金组合物，包括以下重量百分比含量的各组分：
优选地，所述的PA610的特性粘度为2.4dL/g。
优选地，所述的PA612的特性粘度为2.4dL/g。
优选地，所述的复配阻燃母粒是由我公司自行复配，由三种组分混合而成，具体包括以下重量百分比含量的各组分：除铁赤磷母粒：50%；防迁移剂：25%；高CTI助剂：25%。
优选地，所述玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维。
优选地，所述抗氧剂为受阻酚类抗氧剂。
优选地，所述的润滑分散剂为硅酮。
本发明还涉及一种前述的阻燃玻纤增强PA610/PA612合金组合物的制备方法，具体为：将所述各组分按重量配比放入高混机中混合，出料，双螺杆挤出机挤出造粒，即可。
优选地，所述混合的时间为2～5分钟。
优选地，所述双螺杆挤出机的挤出温度为235～260℃，螺杆转数为30～40HZ。
与现有技术相比，本发明具有如下有益效果：
1、采用复配阻燃母粒体系，和传统的阻燃母粒相比，复配阻燃母粒体系有以下特点：1）综合力学性能更高；2)能将CTI从320V提高到660V；3）克服了普通红磷在一定条件下迁移的制品表面，然后红磷在氧气和水的作用下最终形成对金属制件有腐蚀性的磷系酸性物质的缺陷。
2、加入的抗氧剂为受阻酚类抗氧剂，可提高组合物在加工过程的抗氧化性能和使用过程中的抗老化性能。
3、采用硅酮作为润滑剂，提高材料加工流动性，降低摩擦系数，提高滑爽性，在特定的加工条件下采用分散性较好，停留时间短，剪切稍弱的组合，防止阻燃剂分解，从而保证了材料的质量稳定。
4、具有高CTI值、低阻燃剂析出性，无卤环保，综合性能均衡等优势，可以广泛应用于接触器、漏电保护器、断路器外壳等电子电器领域的产品。
具体实施方式
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。
对比例1～3
PA610/PA612合金组合物，包括表1所示的重量百分比含量的各组分；其制备方法如下：
（1）按表1所示的重量百分比含量称取原料，放入高混机中混合2～5分钟，出料；
（2）将上述混合好的原料加入双螺杆挤出机，挤出造粒，既得所述PA610/PA612合金组合物；所述双螺杆挤出机的挤出温度、螺杆转数等参数如表2所示。
实施例1～8
阻燃玻纤增强PA610/PA612合金组合物，包括表1所示的重量百分比含量的各组分；其制备方法如下：
（1）按表1所示的重量百分比含量称取原料，放入高混机中混合2～5分钟，出料；表1中的复配阻燃母粒包括以下质量百分比含量的各组分：除铁赤磷母粒：50%；防迁移剂：25%；高CTI助剂：25%；
（2）将上述混合好的原料加入双螺杆挤出机，挤出造粒，既得所述阻燃玻纤增强PA610/PA612合金组合物；所述双螺杆挤出机的挤出温度、螺杆转数等参数如表2所示。
表1对比例1～3及实施例1～8的原材料配方
  原料名称   PA610   PA612   复配阻燃母粒   玻璃纤维   抗氧剂   润滑分散剂
  对比例1   37.3   30   12   20   0.2   0.5
  对比例2   33.3   30   11   25   0.2   0.5
  对比例3   24.3   30   10   35   0.2   0.5
  实施例1   39   40   0   20   0.6   0.4
  实施例2   20   41   15   22.5   1   0.5
  实施例3   25.3   30   9   35   0.1   0.6
  实施例4   21.3   30   8   40   0.2   0.5
  实施例5   22.3   30   7   40   0.2   0.5
  实施例6   23.3   30   6   40   0.6   0.1
  实施例7   41   20   12.8   25   0.2   1
  实施例8   30   27   15   27   0.2   0.8
表2
实施例9、性能测试
采用ASTM标准，对实施例1～8及对比例1～3制得的PA610/PA612合金组合物样品，进行性能测试对比。测试性能对比如表3所示：
表3
由表3可知，实施例1与对比例1、2、3相比，说明采用本发明的复配阻燃母粒体系制得的高CTI、低析出性阻燃PA6/PA12合金组合物，具有以下几点优点：
（1）综合力学性能更高：在拉伸强度、弯曲强度、弯曲模量、冲击强度等力学性能指标上均取得较大的提高；
（2）CTI值更高：将CTI从320V提高到660V；
（3）腐蚀性试验得到的PH值由酸性变为中性，说明本发明采用的复配阻燃母粒体系克服了传统阻燃母粒体系中普通红磷在一定条件下迁移的制品表面，然后红磷在氧气和水的作用下最终形成对金属制件有腐蚀性的磷系酸性物质的缺陷。
综上所述，本发明的组合物具有高CTI值、低阻燃剂析出性，无卤环保，综合性能均衡等优点，可以广泛应用于接触器、漏电保护器、断路器外壳等电子电器领域的产品。

Claims (9)

1.一种阻燃玻纤增强PA610/PA612合金组合物，其特征在于，该组合物包括以下重量百分比含量的各组分：
所述的复配阻燃母粒包括以下重量百分比含量的各组分：除铁赤磷母粒：50％；防迁移剂：25％；高CTI助剂：25％。
2.根据权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物，其特征在于，所述的PA610的特性粘度为2.4dL/g。
3.根据权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物，其特征在于，所述的PA612的特性粘度为2.4dL/g。
4.根据权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物，其特征在于，所述的玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维。
5.根据权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物，其特征在于，所述的抗氧剂为受阻酚类抗氧剂。
6.根据权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物，其特征在于，所述的润滑分散剂为硅酮。
7.一种如权利要求1所述的阻燃玻纤增强PA610/PA612合金组合物的制备方法，其特征在于，所述制备方法具体为：将所述各组分按重量配比放入高混机中混合，出料，双螺杆挤出机挤出造粒，即可。
8.根据权利要求7所述的阻燃玻纤增强PA610/PA612合金组合物的制备方法，其特征在于，所述混合的时间为2～5分钟。
9.根据权利要求7所述的阻燃玻纤增强PA610/PA612合金组合物的制备方法，其特征在于，所述双螺杆挤出机的挤出温度为235～260℃，螺杆转数为30～40RPM。
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