CN102942738B - 一种高cti值、高gwit值环保阻燃玻纤增强pp/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pp/ppo合金材料及其制备方法 Download PDFInfo
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Abstract
本发明提供一种高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料,它是由以下重量百分比的原料制成:PP 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是由以下重量百分比的物质组成:BPS 50%,次磷酸镁25%,滑石粉25%。本发明还提供了上述材料的制备方法。其优点在于:本发明采用新型阻燃复配体系,使材料的GWIT值提高了50-100℃,能够通过850℃灼热丝,玻璃纤维的加入也使材料的GWIT值明显的提高,同时该材料的冲击性能、抗老化性能得到改善,加工流动性、滑爽性提高,摩擦系数降低。
Description
技术领域
本发明涉及一种环保阻燃玻纤增强PP/PPO合金材料及其制备方法,具体地说,是一种高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料及其制备方法。
背景技术
PPO,中文名聚苯醚,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、耐磨、无毒、耐污染等优点。另外,PPO是工程塑料中介电常数和介电损耗最小的品种之一,几乎不受温度、湿度的影响,可用于低、中、高频电场领域,其负荷变形温度可达190℃以上,脆化温度为-170℃。PPO的相对密度小(PPO/PA同类产品也仅为1.10-1.13g/cm3),具有良好的机械强度和抗蠕变性,耐应力松弛,抗疲劳强度高。
聚丙烯,英文名称polypropylene,简称PP,分子式:(C3H6)n,是由丙烯聚合而制得的一种热塑性树脂。按甲基排列位置分为等规聚丙烯(isotaetic polyprolene)、无规聚丙烯(atactic polypropylene)和间规聚丙烯(syndiotatic polypropylene)三种。PP无毒、无味,密度小,强度、刚度、硬度、耐热性均优于低压聚乙烯,可在100℃左右使用;具有良好的电性能和高频绝缘性不受湿度影响,适于制作一般机械零件、耐腐蚀零件和绝缘零件。常见的酸、碱等有机溶剂对它几乎不起作用,因此可用于食具。
PP/PPO合金材料综合了PP和PPO两种材料的优点。
21世纪电子、电气、通讯、家电、机电设备向高性能和微型化发展,对阻燃PP/PPO合金材料的要求也越来越高。同时,随着人类环保意识的提高,绿色环保产品受到普遍关注。因此,阻燃PP/PPO合金材料的发展方向是:高性能功能化阻燃PP/PPO合金材料成为主流;绿色环保型阻燃PP/PPO合金材料的品种与需求越来越多;阻燃PP/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。一些传统的PP/PPO合金材料的阻燃体系为(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漏电起痕指数(CTI值)和灼热丝温度(GWIT值)都不高,不适用于高要求的用电环境,如不适用于低压电子电容器外壳、负载断路开关、碳刷支架、塑壳断路器领域。
中国专利文献CN 201110377526.8,申请日2011-11-23,公开了一种永久抗静电PP/PPO合金及制备方法,该材料包括以下组分和重量百分含量:抗静电母粒3-8%,PP 40-45%,PPO 40-50%,相容剂1-5%,按重量百分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245-285℃,螺杆转数在35-40Hz。该材料具有抗静电效果持久、达到永久抗静电的效果,抗静电效果好,综合力学性能较高、接近纯PP/PPO合金的性能,颜色浅可配成各种颜色,成本低,耐热性好等优点。
中国专利文献CN 201110377403.4,申请日2011-11-24,公开了一种玻纤增强聚苯醚/聚丙烯合金及其制备方法,所述合金由以下重量份数的组分组成:聚苯醚(PPO):10-50%,聚丙烯(PP):10-50%,增韧剂:3-15%,玻璃纤维:10-40%,聚苯醚-聚丙烯相容剂:5-15%,抗氧剂:0.2-0.6%,润滑剂:0.2-1%,抗紫外助剂:0.2-0.8%。所述制备工艺包括以下工艺:首先将原料按上述比例混合后经喂料机加入双螺杆挤出机中,长玻纤由双螺杆挤出机玻纤入口加入,后进行造粒,温度控制在220-250℃,螺杆控制在300-600转,即可得到玻纤增强聚苯醚/聚丙烯合金材料。该聚苯醚/聚丙烯合金具有良好的拉伸、弯曲及冲击性能、耐热性、耐候性、抗蠕变、尺寸稳定性以及易加工成型等优点,适用于汽车零部件、管件、阀件等。
但是目前关于综合性能优异的高CTI值、高GWIT值的环保阻燃玻纤增强PP/PPO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PP/PPO合金材料。
本发明的再一的目的是,提供一种上PP/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PP/PPO合金材料,所述的材料由以下各重量百分比的原料制成:
PP 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是由以下各重量百分比的物质组成:BPS 50%,次磷酸镁25%,滑石粉25%。
优选的,所述的材料由以下各重量百分比的原料制成:
PP 25%,
PPO 25.1%,
复配型阻燃剂 12%,
三氧化二锑 4%,
玻璃纤维 30%,
相容剂 3%,
抗氧剂 0.4%,
氧化物 0.5%。
优选的,所述的材料由以下各重量百分比的原料制成:
PP 25%,
PPO 23%,
复配型阻燃剂 12%,
三氧化二锑 4%,
玻璃纤维 30%,
相容剂 5%,
抗氧剂 0.4%,
氧化物 0.6%。
优选的,所述的PPO的特性粘度为1.0dl/g。
优选的,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。
优选的,所述的相容剂为马来酸酐接枝SEBS。
优选的,所述的抗氧剂为高分子量受阻酚类抗氧剂。
优选的,所述的高分子量受阻酚类抗氧剂为抗氧剂1330。
优选的,所述的氧化物为氧化铁。
为实现上述第二个目的,本发明采取的技术方案是:
如上所述的高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料的制备方法,包括以下步骤:
1)按重量百分比称取原料: PP 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%;
2)将步骤1)称取的原料放入高混机中混合2-5分钟,出料;
3)用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为30-40HZ。
本发明优点在于:
1、与现有技术相比,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GWIT值提高50-100℃,能够通过850℃灼热丝;
2、玻璃纤维的加入使材料的GWIT值明显的提高;
3、加入相容剂改善了材料的冲击性能;
4、抗氧剂采用的是受阻酚类抗氧剂,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值的助剂,可提高材料加工流动性,降低摩擦系数,提高滑爽性,同时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,可防止阻燃剂分解,从而保证了材料的质量稳定。
总之,本发明制备的PP/PPO合金材料具有GWIT值较高、CTI值较高、环保、综合性能均衡的优点,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、塑壳断路器等领域。
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。
本文中,所述的PP为市售聚丙烯;所述的PPO为市售聚苯醚;所述的经硅烷偶联剂处理的无碱玻璃纤维,是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,其处理方法为本领域公知常识;实施例1-9及对比例3-5所述的复配型阻燃剂是由以下各重量百分比的物质组成:BPS(溴化聚苯乙烯)50%,次磷酸镁25%,滑石粉25%;所述的玻璃纤维ECS 13-4.5-534A购自巨石集团,为无碱玻璃纤维;所述的AX8900购自法国阿科玛公司,为乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物,作为相容剂。
实施例1 本发明的PP/PPO合金材料制备(一)
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)25.1%,复配型阻燃剂12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 3%,抗氧剂1330 0.4%,氧化铁0.5%;将称取的原料放入高混机中混合5分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
实施例2 本发明的PP/PPO合金材料制备(二)
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)23%,复配型阻燃剂12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 5%,抗氧剂1330 0.4%,氧化铁0.6%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
实施例3 本发明的PP/PPO合金材料制备(三)
按重量百分比称取原料:PP 23%,PPO(特性粘度为1.0dl/g)22%,复配型阻燃剂20%,三氧化二锑4.3%,经硅烷偶联剂处理的无碱玻璃纤维20%,马来酸酐接枝SEBS 10%,抗氧剂1330 0.1%,氧化铁0.6%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为30HZ,具体加工情况如下表所示。
实施例4 本发明的PP/PPO合金材料制备(四)
按重量百分比称取原料:PP 41%,PPO(特性粘度为0.9dl/g)22%,复配型阻燃剂6%,三氧化二锑6%,经硅烷偶联剂处理的无碱玻璃纤维21%,马来酸酐接枝SEBS 2%,抗氧剂1330 1%,氧化铁1%;将称取的原料放入高混机中混合5分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为40HZ,具体加工情况如下表所示。
实施例5 本发明的PP/PPO合金材料制备(五)
按重量百分比称取原料:PP 26%,PPO(特性粘度为1.1dl/g)30%,复配型阻燃剂6%,三氧化二锑10%,经硅烷偶联剂处理的无碱玻璃纤维25%,马来酸酐接枝SEBS 2%,抗氧剂1330 0.5%,氧化铁0.5%;将称取的原料放入高混机中混合3分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
实施例6 本发明的PP/PPO合金材料制备(六)
按重量百分比称取原料:PP 27.8%,PPO(特性粘度为1.0dl/g)41%,复配型阻燃剂6%,三氧化二锑3%,经硅烷偶联剂处理的无碱玻璃纤维20%,马来酸酐接枝SEBS 2%,抗氧剂1330 0.1%,氧化铁0.1%;将称取的原料放入高混机中混合3分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为38HZ,具体加工情况如下表所示。
实施例7 本发明的PP/PPO合金材料制备(七)
按重量百分比称取原料:PP 23%,PPO(特性粘度为1.0dl/g)22%,复配型阻燃剂10.9%,三氧化二锑15%,经硅烷偶联剂处理的无碱玻璃纤维20%,AX8900 8%,抗氧剂1330 1%,氧化铁0.1%;将称取的原料放入高混机中混合3分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为38HZ,具体加工情况如下表所示。
实施例8 本发明的PP/PPO合金材料制备(八)
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)25.1%,复配型阻燃剂12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 3%,抗氧剂168 0.4%,氧化铁0.5%;将称取的原料放入高混机中混合5分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
实施例9 本发明的PP/PPO合金材料制备(九)
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.1dl/g)23%,复配型阻燃剂12%,三氧化二锑4%,玻璃纤维ECS13-4.5-534A 30%,马来酸酐接枝SEBS 5%,抗氧剂1330 0.4%,氧化铁0.6%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
对比例1
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)25.1%,复配型阻燃剂(由以下重量百分比含量的组分混合而成:除铁赤磷母粒50%,防迁移剂25%,高CTI助剂25%)12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 3%,抗氧剂1330 0.4%,氧化铁0.5%;将称取的原料放入高混机中混合5分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
对比例2
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)23%,GF 6%,十溴二苯乙烷6%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 5%,抗氧剂1330 0.4%,氧化铁0.6%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
对比例3
按重量百分比称取原料:PP 40%,PPO(特性粘度为1.0dl/g)38%,复配型阻燃剂12%,三氧化二锑4%,马来酸酐接枝SEBS 5%,抗氧剂1330 0.4%,氧化铁0.6%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
对比例4
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)28.1%,复配型阻燃剂12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,抗氧剂1330 0.4%,氧化铁0.5%;将称取的原料放入高混机中混合5分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
对比例5
按重量百分比称取原料:PP 25%,PPO(特性粘度为1.0dl/g)23%,复配型阻燃剂12%,三氧化二锑4%,经硅烷偶联剂处理的无碱玻璃纤维30%,马来酸酐接枝SEBS 5%,抗氧剂1330 1%;将称取的原料放入高混机中混合2分钟,出料;用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为35HZ,具体加工情况如下表所示。
实施例10 性能测试
对实施例1-9及对比例1-5制得的样品采用ASTM标准进行性能测试,测试性能对比如下表所示:
由上表可以看出本发明制备的PP/PPO合金材料具有GWIT值较高、CTI值较高、环保、综合性能均衡的优点,因此可广泛用于低压电子电容器外壳、负载断路开关、碳刷支架、塑壳断路器等领域。
以上实施例3-9制备的PP/PPO合金材料经性能测试,实验结果表明其同样具有GWIT值较高、CTI值较高、环保、综合性能均衡的优点。
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 (6)
1.一种高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料,其特征在于,所述的材料由以下各重量百分比的原料制成:
PP 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是由以下各重量百分比的物质组成: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;
所述的相容剂为马来酸酐接枝SEBS;
所述的抗氧剂为高分子量受阻酚类抗氧剂;
所述的氧化物为氧化铁。
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PP/PPO合金材料,其特征在于,所述的材料由以下各重量百分比的原料制成:
PP 25%,
PPO 25.1%,
复配型阻燃剂 12%,
三氧化二锑 4%,
玻璃纤维 30%,
相容剂 3%,
抗氧剂 0.4%,
氧化物 0.5%。
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PP/PPO合金材料,其特征在于,所述的材料由以下各重量百分比的原料制成:
PP 25%,
PPO 23%,
复配型阻燃剂 12%,
三氧化二锑 4%,
玻璃纤维 30%,
相容剂 5%,
抗氧剂 0.4%,
氧化物 0.6%。
4.根据权利要求1-3任一所述的高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料,其特征在于,所述的PPO的特性粘度为1.0dl/g。
5.根据权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料,其特征在于,所述的高分子量受阻酚类抗氧剂为抗氧剂1330。
6.权利要求1所述的高CTI值、高GWIT值环保阻燃玻纤增强PP/PPO合金材料的制备方法,其特征在于,包括以下步骤:
1)按重量百分比称取原料:PP 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%;
2)将步骤1)称取的原料放入高混机中混合2-5分钟,出料;
3)用双螺杆挤出机挤出造粒,其中加工温度为220-240℃,螺杆转数为30-40HZ。
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