CN102964829B - 一种高cti值、高gwit值环保阻燃玻纤增强pa66/ppo合金材料及其制备方法 - Google Patents
一种高cti值、高gwit值环保阻燃玻纤增强pa66/ppo合金材料及其制备方法 Download PDFInfo
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- CN102964829B CN102964829B CN201210510322.1A CN201210510322A CN102964829B CN 102964829 B CN102964829 B CN 102964829B CN 201210510322 A CN201210510322 A CN 201210510322A CN 102964829 B CN102964829 B CN 102964829B
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- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 54
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004721 Polyphenylene oxide Substances 0.000 title abstract description 65
- 229920006380 polyphenylene oxide Polymers 0.000 title abstract description 65
- 239000003063 flame retardant Substances 0.000 title abstract description 26
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title abstract description 16
- 230000000052 comparative effect Effects 0.000 title abstract description 6
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- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 14
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Abstract
本发明公开了一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,所述合金材料包括以下重量百分比含量的原料组分:PA6623%~41%,PPO22%~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%,所述的复配型阻燃剂由溴化聚苯乙烯、次磷酸镁和滑石粉组成。本发明还提供了高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料的制备方法。本发明合金材料的GWIT值及CTI值较高,阻燃效果较好,合金材料环保,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、塑壳断路器等电子电器领域的产品。
Description
技术领域
本发明涉及合金材料技术领域,具体地说,是一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料及其制备方法。
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:聚己内酰胺(尼龙6,简称PA6)、聚己二酰己二胺(尼龙66,简称PA66)、聚癸二酸癸二胺(尼龙1010,简称PA1010)、聚癸二酰己二胺(尼龙610,简称PA610)、聚十一酰胺(尼龙11,简称PA11)、聚十二酰胺(尼龙12,简称PA12)、聚己二酰丁二胺(尼龙46,简称PA46)。PA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。
聚苯醚,英文名Polyphenylene Oxide(简称PPO),是一类耐高温的热塑性树脂,是世界五大通用工程塑料之一。它具有刚性大、耐热性高、难燃、强度较高、电性能优良等优点。另外,聚苯醚还具有耐磨、无毒、耐污染等优点。PPO的介电常数和介电损耗在工程塑料中是最小的品种之一,几乎不受温度、湿度的影响,可用于低、中、高频电场领域。PPO的负荷变形温度可达190℃以上,脆化温度为-170℃。PPO材料作为世界五大通用工程塑料之一,无毒,相对密度小,是五大通用工程塑料中密度最小的,具有良好的机械强度,抗蠕变性,耐应力松弛,抗疲劳强度高。
PA66/PPO合金材料综合了PA66和PPO材料的优点,具有优异的耐热性,良好的加工性,可喷涂性等。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PA66/PPO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PA66/PPO合金材料发展方向是:高性能功能化阻燃PA66/PPO合金材料成为主流;绿色环保型阻燃PA66/PPO合金材料的品种与需求越来越多;阻燃PA66/PPO合金材料的生产向多品种系列化方向发展;阻燃剂的使用向多元化、复合型发展。传统的溴系阻燃剂已不能满足高标准产品的要求,一些传统的阻燃剂复配体系,例如玻璃纤维+十溴二苯乙烷+三氧化二锑复配体系、玻璃纤维+溴化聚苯乙烯+三氧化二锑复配体系,这些复配体系的CTI值(comparative tracking index,相对漏电起痕指数)和GWIT值(glow-wire ignition temperature,灼热丝点燃温度)都不高,不适用于高要求的用电环境。
中国专利文献申请号201210247335.4,公开日2012年10月17日,公布了一种阻燃玻纤增强PA66/PPO合金组合物及其制备方法。该合金组合物包括以下重量百分比含量的各组分:PA66 20-41%,PPO 20-41%,相容剂0-10%,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%。所述的复配阻燃母料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%。制备的合金组合物具有高CTI值、低阻燃剂析出性的优点,但是关于集高GWIT值、高CTI值、环保、综合性能均衡等优点于一体的合金材料还未见报道。
发明内容
本发明的目的是针对现有技术中的不足,提供一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料。该合金材料灼热丝温度较高,环保,综合性能均衡,适用于低压电子电容器外壳,负载断路开关,碳刷支架,塑壳断路器等电子领域。
本发明的再一的目的是,提供一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料的制备方法。
为实现上述目的,本发明采取的技术方案是:
一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,所述合金材料包括以下重量百分比含量的原料组分:
PA66 23%~41%,
PPO 22%~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%,
所述的复配型阻燃剂由溴化聚苯乙烯、次磷酸镁和滑石粉组成。
所述的PA66为聚己二酰己二胺,所述的PPO的特性粘度为1.0 dl/g。
所述的复配型阻燃剂由以下重量百分比含量的原料组分组成:溴化聚苯乙烯(简称BPS)50%,次磷酸镁25%,滑石粉25%。
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。
所述的相容剂是马来酸酐接枝PPO。
所述的抗氧剂是受阻酚类抗氧剂。
所述的抗氧剂是抗氧剂1330。
所述的氧化物是氧化铁。
为实现上述第二个目的,本发明采取的技术方案是:
一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料的制备方法,包括如下步骤:
(1)按照上述的重量百分比称取各原料;
(2)将称好的各种原料放入高混机中,混合2~5分钟,出料,然后用双螺杆挤出机挤出造粒。
所述的双螺杆挤出机的加工温度为240~260℃,螺杆转数为30~40Hz。
与现有技术相比,本发明优点在于:
1、本发明采用新型阻燃剂复配体系,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GWIT值提高50℃到100℃,能够通过850℃灼热丝;
2、玻璃纤维的加入能使材料的GWIT值明显提高,相容剂能改善材料的冲击性能,提高材料加工流动性,降低摩擦系数,提高滑爽性;
3、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,采用氧化物作为提高CTI值的助剂;
4、本发明在特定的加工条件下,原料分散性较好,停留时间短,采用剪切稍弱的组合,防止阻燃剂分解,从而保证了材料的质量稳定;制备得到的合金材料的GWIT值及CTI值较高,阻燃效果较好,合金材料环保,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、塑壳断路器等电子电器领域的产品。
具体实施方式
下面对本发明提供的具体实施方式作详细说明。
本发明高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,所述PA66为市售聚己二酰己二胺;所述的PPO的特性粘度优选为1.0 dl/g,也可以是0.6~1.2 dl/g范围的其它值;所述的复配型阻燃剂由溴化聚苯乙烯(简称BPS)、次磷酸镁和滑石粉组成,重量百分比含量优选为BPS 50%、次磷酸镁25%、滑石粉25%,该阻燃剂能有效提高合金材料的GWIT值;所述的玻璃纤维优选为表面经硅烷偶联剂处理的无碱玻璃纤维,将玻璃纤维加入硅烷偶联剂中,使其表面经硅烷偶联剂处理,其能使材料的GWIT值明显提高;所述的相容剂能改善材料的冲击性能,可以是马来酸酐接枝聚苯乙烯、酰亚胺改性丙烯酸、马来酸酐接枝POE等,优选为马来酸酐接枝PPO;所述的抗氧剂优选为受阻酚类抗氧剂中的抗氧剂1330,还可以是抗氧剂1010、抗氧剂300、硫代二丙酸双酯等,均能阻断、抑制或延缓聚合物氧化或自动氧化过程,可提高合金材料在加工过程中的抗氧化性能和使用过程中的抗老化性能;所述的氧化物是作为提高CTI值的助剂,可以是氧化铝、氧化镁等,优选为氧化铁。
本发明PA66/PPO合金材料的制备过程中,将称好的各种原料放入高混机中,混合2~5分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为30~40Hz。
实施例1 PA66/PPO合金材料的制备(一)
PPO的特性粘度为1.0 dl/g,复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维,相容剂为马来酸酐接枝PPO,抗氧剂为抗氧剂1330,氧化物是氧化铁。
按以下重量百分比含量称取各原料组分:PA66 23%,PPO 22%,复配型阻燃剂20%,三氧化二锑4%,玻璃纤维20%,相容剂10%,抗氧剂0.1%,氧化物0.9%。将称好的各原料放入高混机中,混合2分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为30Hz。
实施例2 PA66/PPO合金材料的制备(二)
PPO的特性粘度为0.6 dl/g,复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维,相容剂为马来酸酐接枝PPO,抗氧剂为抗氧剂1010,氧化物是氧化铁。
按以下重量百分比含量称取各原料组分:PA66 41%,PPO 22%,复配型阻燃剂6%,三氧化二锑3%,玻璃纤维20%,相容剂6%,抗氧剂1%,氧化物1%。将称好的各原料放入高混机中,混合5分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为35Hz。
实施例3 PA66/PPO合金材料的制备(三)
PPO的特性粘度为1 dl/g,复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成,相容剂为马来酸酐接枝聚苯乙烯,抗氧剂为抗氧剂1330,氧化物是氧化铝。
按以下重量百分比含量称取各原料组分:PA66 23%,PPO 23%,复配型阻燃剂6%,三氧化二锑15%,玻璃纤维30%,相容剂2%,抗氧剂0.9%,氧化物0.1%。将称好的各原料放入高混机中,混合3分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为40Hz。
实施例4 PA66/PPO合金材料的制备(四)
PPO的特性粘度为1 dl/g,复配型阻燃剂由重量百分比含量为BPS 45%、次磷酸镁30%和滑石粉25%的原料组成,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维,相容剂为马来酸酐接枝PPO,抗氧剂为抗氧剂1330,氧化物是氧化铁。
按以下重量百分比含量称取各原料组分:PA66 24%,PPO 30%,复配型阻燃剂18%,三氧化二锑4%,玻璃纤维20%,相容剂3%,抗氧剂0.8%,氧化物0.2%。将称好的各原料放入高混机中,混合4分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为38Hz。
实施例5 PA66/PPO合金材料的制备(五)
PPO的特性粘度为1.0 dl/g,复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维,相容剂为马来酸酐接枝PPO,抗氧剂为抗氧剂300,氧化物是氧化铁。
按以下重量百分比含量称取各原料组分:PA66 23%,PPO 41%,复配型阻燃剂7%,三氧化二锑3%,玻璃纤维23%,相容剂2%,抗氧剂0.5%,氧化物0.5%。将称好的各原料放入高混机中,混合5分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为30Hz。
实施例6 PA66/PPO合金材料的制备(六)
PPO的特性粘度为1.0 dl/g,复配型阻燃剂由重量百分比含量为BPS 60%、次磷酸镁20%和滑石粉20%的原料组成,相容剂为酰亚胺改性丙烯酸,抗氧剂为抗氧剂1330,氧化物是氧化镁。
按以下重量百分比含量称取各原料组分:PA66 30%,PPO 30%,复配型阻燃剂6%,三氧化二锑3%,玻璃纤维25%,相容剂5%,抗氧剂0.7%,氧化物0.3%。将称好的各原料放入高混机中,混合4分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为40Hz。
实施例7 PA66/PPO合金材料的制备(七)
PPO的特性粘度为1.2 dl/g,复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成,玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维,相容剂为马来酸酐接枝PPO,抗氧剂为抗氧剂1330,氧化物是氧化铁。
按以下重量百分比含量称取各原料组分:PA66 23%,PPO 22%,复配型阻燃剂10%,三氧化二锑9%,玻璃纤维27%,相容剂8%,抗氧剂0.4%,氧化物0.6%。将称好的各原料放入高混机中,混合3分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆转数为35Hz。
需要说明的是,对实施例1-7得到的玻纤增强PA66/PPO合金材料进行性能测试,采用ASTM标准,测试结果表明:制备的PA66/PPO合金材料具有较高的GWIT值及CTI值,合金材料的阻燃性、拉伸强度和弯曲强度均符合要求。
实施例8~9和对比例1~7
PPO的特性粘度为1.0 dl/g;复配型阻燃剂由重量百分比含量为BPS 50%、次磷酸镁25%和滑石粉25%的原料组成;普通阻燃剂可以是磷酸三苯酯、十溴二苯乙烷、十溴二苯醚、氢氧化镁、红磷等,本发明采用十溴二苯乙烷;玻璃纤维为表面经硅烷偶联剂处理的无碱玻璃纤维;相容剂为马来酸酐接枝PPO;抗氧剂为抗氧剂1330;氧化物是氧化铁。
按表1所示的重量百分比含量(%)称取各原料组分。将称好的各原料放入高混机中,混合5分钟,出料,然后用双螺杆挤出机挤出造粒;所述的双螺杆挤出机的加工温度为240~260℃,挤出机包括九个温区,其中一段240℃,二段240℃,三段260℃,四段260℃,五段260℃,六段260℃,七段260℃,八段260℃,九段240℃,螺杆主机转数为35Hz,喂料转数为13Hz。
表1 实施例8~9和对比例1~7中的各原料配方
实施例10 性能测试
采用ASTM标准,对实施例8~9、对比例1~7制备得到的PA66/PPO合金材料进行性能测试,测试结果如表2所示。
表2 合金材料的性能测试结果
结合表1和表2,从表中可知,本发明采用新型阻燃剂复配体系,和传统的普通阻燃剂相比,新型复配阻燃剂能有效提高材料的GWIT值;无碱玻璃纤维的加入能使合金材料的GWIT值明显提高,相容剂能改善材料的冲击性能;氧化铁对提高CTI值有较大影响。
本发明合金材料的GWIT值及CTI值较高,阻燃效果较好,合金材料环保,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、塑壳断路器等电子电器领域的产品。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员,在不脱离本发明方法的前提下,还可以做出若干改进和补充,这些改进和补充也应视为本发明的保护范围。
Claims (7)
1.一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,其特征在于,所述合金材料包括以下重量百分比含量的原料组分:
PA66 23%~41%,
PPO 22%~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%,
所述的复配型阻燃剂由以下重量百分比含量的原料组分组成:溴化聚苯乙烯50%,次磷酸镁25%,滑石粉25%;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;所述的氧化物是氧化铁。
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PA66/PPO合金材料,其特征在于,所述的PA66为聚己二酰己二胺,所述的PPO的特性粘度为1.0 dl/g。
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PA66/PPO合金材料,其特征在于,所述的相容剂是马来酸酐接枝PPO。
4.根据权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,其特征在于,所述的抗氧剂是受阻酚类抗氧剂。
5.根据权利要求4所述的高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料,其特征在于,所述的抗氧剂是抗氧剂1330。
6.一种高CTI值、高GWIT值环保阻燃玻纤增强PA66/PPO合金材料的制备方法,其特征在于,包括如下步骤:
(1)按照权利要求1所述的重量百分比称取各原料;
(2)将称好的各种原料放入高混机中,混合2~5分钟,出料,然后用双螺杆挤出机挤出造粒。
7.根据权利要求6所述的制备方法,其特征在于,所述的双螺杆挤出机的加工温度为240~260℃,螺杆转数为30~40Hz。
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