CN103012921A - 一种高cti值、高gwit值阻燃玻纤增强hdpe/pa66合金材料 - Google Patents

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

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CN103012921A
CN103012921A CN2012105198611A CN201210519861A CN103012921A CN 103012921 A CN103012921 A CN 103012921A CN 2012105198611 A CN2012105198611 A CN 2012105198611A CN 201210519861 A CN201210519861 A CN 201210519861A CN 103012921 A CN103012921 A CN 103012921A
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郭建鹏
徐东东
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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HDPE/PA66合金材料，所述合金材料包括以下重量百分含量的各组分：HDPE 23-41％，PA6622-41％，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：按重量配比称取原料放入高混机中混合2-5分钟，出料，然后用双螺杆挤出机挤出造粒，加工温度在220-240℃，螺杆转数在30-40Hz。与现有技术相比，本发明的合金材料具有高CTI值、低析出性等优点。

Description

一种高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料
技术领域
本发明涉及一种合金材料，尤其是涉及一种高CTI值、高GWIT值阻燃玻纤增强HDPE/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。高密度聚乙烯(High DensityPolyethylene，简称为“HDPE”)，是一种结晶度高、非极性的热塑性树脂。原态HDPE的外表呈乳白色，在微薄截面呈一定程度的半透明状。PE具有优良的耐大多数生活和工业用化学品的特性。某些种类的化学品会产生化学腐蚀，例如腐蚀性氧化剂(浓硝酸)，芳香烃(二甲苯)和卤化烃(四氯化碳)。该聚合物不吸湿并具有好的防水蒸汽性，可用于包装用途。HDPE具有很好的电性能，特别是绝缘介电强度高，使其很适用于电线电缆。中到高分子量等级具有极好的抗冲击性，在常温甚至在-40F低温度下均如此。HDPE/PA66合金材料综合了两种材料的优点。21世纪电子电气通讯家电设备向高性能微型化发展，对阻燃HDPE/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HDPE/PA66合金材料发展方向是；高性能功能化阻燃HDPE/PA66合金材料成为主流；绿色环保型阻燃HDPE/PA66合金材料的品种与需求越来越多；阻燃HDPE/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
本发明的目的就是为了克服上述现有技术存在的缺陷而提供高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料及其制备方法，本发明的合金材料具有高CTI值、低析出性，环保，综合性能均衡，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。
本发明可以通过以下技术方案来实现：
第方面，本发明涉及高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，所述合金材料包括如下重量百分含量的各组分：
Figure BDA00002535783800021
优选的，所述HDPE为高密度聚乙烯。
优选的，所述PA66为市售聚己二酰己二胺，其特性粘度为2.8dl/g。
优选的，所述复配型阻燃剂由如下质量百分比的各组分复配而成：
BPS：50％，次磷酸镁：25％，滑石粉：25％。
优选的，所述玻璃纤维为无碱玻璃纤维，其表面经硅烷偶联剂处理。
优选的，所述相容剂为马来酸酐接枝HDPE。
优选的，所述抗氧剂为受阻酚类抗氧剂。
优选的，所述抗氧剂为抗氧剂1330。
优选的，所述氧化物为氧化铁。
第二方面，本发明还涉及前述高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料的制备方法，包括如下步骤：按如下重量配比称取原料：HDPE 23-41％，PA6622-41％，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％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，加工温度为200-220℃，螺杆转数为30-40Hz。
与现有技术相比，本发明采用新型阻燃复配体系，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。同时，玻璃纤维的加入也使材料的灼热丝明显的提高，加入相容剂是用于改善材料的冲击性能，抗氧剂为一种受阻酚类抗氧剂可提高合金材料在加工过程的抗氧化性能和使用过程中的抗老化性能，采用氧化铁作为提高CTI助剂，提高合金材料加工流动性，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，本发明具有灼热丝温度较高，具有漏电起痕指数较高，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。
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。
实施例1～6
实施例1～2的原料及其重量百分比含量如表1所示；按所述重量百分比含量称取所述原料；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，制得高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料；其中加工温度为220-240℃，螺杆转数为30-40Hz；具体加工情况如表2所示，制得的样品测试结果见表3所示。
对比例1～2
对比例1～3的原料及其重量百分比含量如表1所示；按所述重量百分比含量称取所述原料；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，制得高CTI值、高GWIT阻燃玻纤增强HDPE/PA66合金材料；其中加工温度为220-240℃，螺杆转数为30-40Hz；具体加工情况如表2所示，制得的样品测试结果见表3所示。
由3表可以看出，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。
表1
Figure BDA00002535783800041
表2
Figure BDA00002535783800042
表3
Figure BDA00002535783800043
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 (10)

1.一种高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述合金材料包括如下重量百分含量的各组分：
Figure FDA00002535783700011
2.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述HDPE为高密度聚乙烯。
3.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述PA66为聚己二酰己二胺，其特性粘度为2.8dl/g。
4.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述复配型阻燃剂由如下质量百分比的各组分复配而成：BPS：50％，次磷酸镁：25％，滑石粉：25％。
5.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述玻璃纤维为无碱玻璃纤维，其表面经硅烷偶联剂处理。
6.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述相容剂为马来酸酐接枝HDPE。
7.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述抗氧剂为受阻酚类抗氧剂。
8.如权利要求7所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述抗氧剂为抗氧剂1330。
9.如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料，其特征在于，所述氧化物为氧化铁。
10.一种如权利要求1所述的高CTI值、高GWIT值阻燃玻纤增强HDPE/PA66合金材料的制备方法，其特征在于，包括如下步骤：按如下重量配比称取原料：HDPE23-41％，PA6622-41％，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％；之后放入高混机中混合2-5分钟，出料，然后用双螺杆挤出机挤出造粒，加工温度为220-240℃，螺杆转数为30-40Hz。
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