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CN103013101B - 一种高cti值、高gwit值阻燃玻纤增强pa6/pa66合金材料 - Google Patents

一种高cti值、高gwit值阻燃玻纤增强pa6/pa66合金材料 Download PDF

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CN103013101B
CN103013101B CN201210521063.2A CN201210521063A CN103013101B CN 103013101 B CN103013101 B CN 103013101B CN 201210521063 A CN201210521063 A CN 201210521063A CN 103013101 B CN103013101 B CN 103013101B
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郭建鹏
黄晓明
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Shanghai Rizhisheng New Technology Development Co Ltd
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Abstract

本发明涉及一种高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，所述合金材包括以下重量百分比含量的各组分：PA6 22.5-41％，PA66 22.5-41％，复配型阻燃剂6-20％，三氧化二锑3-15％，玻璃纤维20-30％，相容剂2-10％，抗氧剂0.1-1％，氧化物0.1-1％；本发明还涉及前述合金材料的制备方法，包括如下步骤：按重量配比称取各组分，放入高混机中2～5分钟，出料，然后用双螺杆挤出机挤出造粒，加工温度在220～255℃，螺杆转数在30～40Hz，即可。与现有技术相比，本发明的合金材料灼热丝温度较高，漏电起痕指数较高，环保，综合性能均衡，可以广泛用于低压电子电容器外壳，负载断路开关，碳刷支架，塑壳断路器。

Description

一种高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料
技术领域
本发明涉及一种阻燃玻纤增强合金材料，具体涉及一种高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料。
背景技术
尼龙(Nylon)，中文名聚酰胺，英文名称Polyamide(简称PA)，是分子主链上含有重复酰胺基团-[NHCO]-的热塑性树脂总称。其命名由合成单体具体的碳原子数而定，如：尼龙-6、66、1010、610。它结晶度高、熔点明显、表面硬度大、耐磨耗、摩擦系数小、有自润滑性和消音性；低温性能良好，有一定的耐热性(可以在100度以下使用)；无毒、无臭、不霉烂，有自熄性、耐候性好，但染色性差。21世纪电子电气通讯家电机电设备向高性能微型化发展，对阻燃PA6/PA66合金材料的要求越来越高，同时，随着人类对环保的认识，绿色环保产品受到普遍关注。因此，阻燃PA6/PA66合金材料发展方向是；高性能功能化阻燃PA6/PA66合金材料成为主流；绿色环保型阻燃PA6/PA66合金材料的品种与需求越来越多；阻燃PA6/PA66合金材料的生产向多品种系列化方向发展；阻燃剂的使用多元化，复合型发展。一些传统的方式为(GF+十溴二苯乙烷+三氧化二锑)复配体系，(GF+溴化聚苯乙烯+三氧化二锑)复配体系，但是这些复配体系的CTI值和GWIT值都不高，不适用于高要求的用电环境。该材料适用于低压电子电容器外壳，负载断路开关，碳刷支架，塑壳断路器。
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，提供一种高CTI值、高GWIT值环保阻燃玻纤增强PA6/PA66合金材料及其制备方法。本发明的组合物灼热丝温度(GWIT)较高，漏电起痕指数较高(CTI)，环保，综合性能均衡，可以广泛用于低压电子电容器外壳，负载断路开关，碳刷支架，塑壳断路器。
本发明的目的是通过以下技术方案来实现的：
本发明涉及一种高CTI值、高GWIT值环保阻燃玻纤增强PA6/PA66合金材料，包括以下重量百分比含量的各组分：
PA6          22.5-41％；
PA66         22.5-41％；
复配型阻燃剂 6-20％；
三氧化二锑   3-15％；
玻璃纤维     20-30％；
相容剂       2-10％；
抗氧剂       0.1-1％；
氧化物       0.1-1％。
优选地，所述的PA6的特性粘度为2.8dl/g。
优选地，所述的PA66为聚己二酰己二胺，其特性粘度为2.8dl/g。
优选地，所述的复配型阻燃剂包括以下重量百分比含量的各组分：BPS：50％；次磷酸镁：25％；滑石粉：25％。
优选地，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。
优选地，所述的相容剂为马来酸酐接枝POE。
优选地，所述的抗氧剂为一种受阻酚类抗氧剂。
优选地，所述的抗氧剂为抗氧剂1330。
优选地，所述的氧化物为氧化铁。
本发明还涉及前述的高CTI值、高GWIT值环保阻燃玻纤增强PA6/PA66合金材料的制备方法，具体为：将所述各组分按重量配比放入高混机中混合2～5分钟，出料，双螺杆挤出机挤出造粒，挤出温度为220～255℃，螺杆转数为30～40Hz，即可。
与现有技术相比，本发明具有如下有益效果：
1、采用新型阻燃复配体系，和传统的阻燃体系相比，在阻燃剂百分含量相同的情况下，新型复配体系能使材料的灼热丝提高50到100℃，能够通过850℃灼热丝；
2、加入的玻璃纤维使材料的灼热丝明显的提高；
3、加入的相容剂用于改善材料的冲击性能；
4、采用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；
5、采用氧化铁作为提高CTI助剂，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。
本发明的优点是灼热丝温度(GWIT)较高，漏电起痕指数较高(CTI)，环保，综合性能均衡，可以广泛用于低压电子电容器外壳，负载断路开关，碳刷支架，塑壳断路器。
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1～5
PA6/PA66合金组合物，包括表1所示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PA6/PA66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1～6
高CTI值、高GWIT值环保阻燃玻纤增强PA6/PA66合金材料，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：BPS：50％；次磷酸镁：25％；滑石粉：25％；
(2)将上述混合好的原料加入双螺杆挤出机，挤出造粒，既得所述高CTI值、高GWIT值环保阻燃玻纤增强PA6/PA66合金材料；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1～5及实施例1～6的原材料配方
表2
实施例7、性能测试
采用ASTM标准，对实施例1～6及对比例1～5制得的PA6/PA66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，本发明样品具有灼热丝温度(GWIT)较高，具有漏电起痕指数较高(CTI)，环保，综合性能均衡，广泛用于低压电子电容器外壳，负载断路开关，碳刷支架，塑壳断路器。
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。

Claims (7)

1.一种高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，其特征在于，该组合物包括以下重量百分比含量的各组分：
所述的复配型阻燃剂包括以下重量百分比含量的各组分：BPS：50％；次磷酸镁：25％；滑石粉：25％，所述的氧化物为氧化铁；所述的相容剂为马来酸酐接枝POE。
2.根据权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，其特征在于，所述的PA6的特性粘度为2.8dl/g。
3.根据权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，其特征在于，所述的PA66为聚己二酰己二胺，其特性粘度为2.8dl/g。
4.根据权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，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所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，其特征在于，所述的抗氧剂为一种受阻酚类抗氧剂。
6.根据权利要求5所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料，其特征在于，所述的抗氧剂为抗氧剂1330。
7.一种如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强PA6/PA66合金材料的制备方法，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2～5分钟，出料，双螺杆挤出机挤出造粒，挤出温度为220～255℃，螺杆转数为30～40Hz，即可。
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