CN103013030B - 一种高cti值、高gwit值阻燃玻纤增强abs/pa6/pa66合金材料 - Google Patents
一种高cti值、高gwit值阻燃玻纤增强abs/pa6/pa66合金材料 Download PDFInfo
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Abstract
本发明公开了一种高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料。该合金材料包括以下重量百分比含量的各组分:ABS 15~27%,PA6615~27%,PA65~27%,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%。制备时,将各组分放入高混机中混合2~5分钟,出料,挤出造粒,挤出温度为220~255℃,螺杆转数为30~40Hz。与现有技术相比,本发明的合金材料具有灼热丝温度较高、漏电起痕指数较高、环保、综合性能均衡等优点,可广泛应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
技术领域
本发明涉及ABS/PA6/PA66合金材料,尤其是涉及一种高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料。
背景技术
ABS树脂特点:该树脂综合性能较好,冲击强度较高,化学稳定性,电性能良好;与有机玻璃的熔接性良好,制成双色塑件,且可表面镀铬,喷漆处理;有高抗冲、高耐热、阻燃、增强、透明等级别;流动性比HIPS差一点,比PMMA、PC等好,柔韧性好;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。将ABS、PA6、聚己二酰己二胺(PA66)做成合金后可以综合二者的优点,提高材料的性能。目前国内已经有较多研究。21世纪电子电气通讯家电家电机电设备向高性能微型化发展,对阻燃ABS/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ABS/PA6/PA66合金材料发展方向是:高性能功能化阻燃ABS/PA6/PA66合金材料成为主流;绿色环保型阻燃ABS/PA6/PA66合金材料的品种与需求越来越多;阻燃ABS/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。
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而提供一种高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料及其制备方法。本发明的合金材料具有灼热丝温度(GWIT)较高、漏电起痕指数较高(CTI)、环保、综合性能均衡等优点,可以广泛应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:
第一方面,本发明涉及一种高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料,包括以下重量百分比含量的各组分:
ABS 15~27%,
PA66 15~27%,
PA6 15~27%,
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%,
金属氧化物 0.1~1%。
优选地,所述ABS为市售丙烯腈-丁二烯-苯乙烯;所述PA66为市售聚己二酰己二胺,其特性粘度为2.8dl/g。
优选地,所述PA6为市售聚酰胺6,其特性粘度为2.8dl/g。
优选地,所述复配型阻燃剂由质量比为2:1:1的BPS(溴化聚苯乙烯)、次磷酸镁和滑石粉复配而成。
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,所述相容剂为市售马来酸酐接枝ABS。
优选地,所述抗氧剂为高分子量受阻酚类抗氧剂。
优选地,所述受阻酚类抗氧剂为抗氧剂1330。
优选地,所述金属氧化物为氧化铁。
第二方面,本发明还涉及一种前述的高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料的制备方法,包括如下步骤:
A、按所述重量百分比含量称取所述各组分;
B、放入高混机中混合2~5分钟,出料,放入双螺杆挤出机中挤出造粒,所述双螺杆挤出机的加工温度为220~255℃,螺杆转数为30~40Hz。
与现有技术相比,本发明具有的有益效果如下:
1、本发明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50~100℃,能够通过850℃灼热丝;
2、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抗冲击性能,高分子量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。
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1~6的高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料,包含的各组分如表1所示,其中,ABS为市售丙烯腈-丁二烯-苯乙烯,PA66为特性粘度为2.8dl/g的市售聚己二酰己二胺,PA6为特性粘度为2.8dl/g的市售聚酰胺6,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维(具体为:将无碱玻璃纤维加入硅烷偶联剂中,使其表面经硅烷偶联剂处理),相容剂为市售马来酸酐接枝ABS,复配阻燃剂A由三种组分混合而成,其质量百分比为BPS:50%,次磷酸镁:25%,滑石粉:25%,复配阻燃剂B为质量比为2:1:1的BPS、GF(无反应性的含氮、磷的阻燃剂)和三氧化二锑的复配体系,复配阻燃剂C为质量比为2:1:1的十溴二苯乙烷、GF和三氧化二锑的复配体系。
本实施例的合金材料对应的制备方法为:分别将表1所示的各组分按其重量百分比含量放入高混机中混合2~5分钟,出料,然后用螺杆挤出机挤出造粒,即得所述合金材料;双螺杆挤出机的螺杆转数为30~40Hz,各段对应的工作温度如表2所示。
对比例1~5
对比例1~5的ABS/PA6/PA66合金材料,包含的各组分如表1所示,对应的制备方法同实施例1。
将实施例1~6和对比例1~5制得的合金材料,采用ASTM标准进行性能测试对比,测试性能对比如表3所示。
表1
表2
表3
由表3可知:通过实施例1与对比例1、2的对比可知,本发明采用自行配置的新型阻燃复配体系A,和传统的阻燃体系B、C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70~90℃,能够通过850℃灼热丝;通过实施例2与对比例3、4的对比可知,相容剂可改善材料的抗冲击性能,氧化铁可提升材料的拉伸强度,而在本发明中氧化铁主要是用作提高CTI助剂,提高材料加工流动性,降低摩擦系数,提高滑爽性,防止阻燃剂分解,从而保证了材料的各项性能的稳定;通过实施例2与对比例5的对比可知,加入过量的玻璃纤维,并不能使得材料的CTI、GMTI值得到更大程度的提升。
综上所述,本发明的高CTI值、高GWIT值阻燃玻纤增强ABS/PA6/PA66合金材料具有灼热丝温度(GWIT)较高,具有漏电起痕指数较高(CTI),环保,综合性能均衡,可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 (5)
1.一种高CTI值、高GWIT值环保阻燃玻纤增强ABS/PA6/PA66合金材料,其特征在于,由以下重量百分比含量的各组分组成:
所述复配型阻燃剂由质量比为2:1:1的BPS、次磷酸镁和滑石粉复配而成;所述金属氧化物为氧化铁;
所述ABS为市售丙烯腈-丁二烯-苯乙烯;所述PA66为市售聚己二酰己二胺,其特性粘度为2.8dl/g;所述PA6为市售聚酰胺6,其特性粘度为2.8dl/g;
所述相容剂为市售马来酸酐接枝ABS。
2.根据权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强ABS/PA6/PA66合金材料,其特征在于,所述玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维。
3.根据权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强ABS/PA6/PA66合金材料,其特征在于,所述抗氧剂为高分子量受阻酚类抗氧剂。
4.根据权利要求3所述的高CTI值、高GWIT值环保阻燃玻纤增强ABS/PA6/PA66合金材料,其特征在于,所述受阻酚类抗氧剂为抗氧剂1330。
5.一种如权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强ABS/PA6/PA66合金材料的制备方法,其特征在于,包括如下步骤:
A、按所述重量百分比含量称取所述各组分;
B、放入高混机中混合2~5分钟,出料,放入双螺杆挤出机中挤出造粒,所述双螺杆挤出机的加工温度为220~255℃,螺杆转数为30~40Hz。
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