CN104513427A - 一种新型耐冲击汽车保险杠复合材料及其制备方法 - Google Patents
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Abstract
本发明是关于一种新型耐冲击汽车保险杠复合材料及其制备方法,该材料包括以下组分及含量(wt%):聚丙烯40-60、碳纳米管(CNTs)0.5-2、无碱玻璃纤维4-8、填料20-40、分散剂5-10、成核剂2-4、抗氧剂0.5-1.5、润滑剂1-2,利用无碱玻璃纤维处理碳纳米管后,将上述原料放入混合机中混合,再放入双螺杆挤出机中挤出制粒得到产品,本发明具有设备简单,操作方便,成本较低。制备的聚丙烯材料,不仅耐冲击性能明显增强,而且机械性能和热稳定性显著提高,流动性好,可广泛适用于汽车保险杠。
Description
技术领域
本发明涉及一种高分子材料,尤其涉及一种新型耐冲击汽车保险杠复合材料及其制备方法。
背景技术
随着汽车产业的发展,节能、环保、低成本化成为当前汽车工业生产的主要目标。以质轻塑料替代金属用于汽车零部件的制造是汽车工业实现以上目标的一个重要手段。保险杠是汽车上最大的外饰件之一,是一种表面积大,形状复杂的薄壁大型结构部件,其对整个车辆的安全防护起着重大的作用。保险杠所用的材料不仅要求具有优异的刚性、耐老化性、耐热性、耐寒性,还要具有质量轻、良好的冲击韧性和加工流动性能。因此,国内外十分重视保险杠材料的研究。
目前聚丙烯(PP)材料在制备汽车保险杠应用比较广泛。其具有良好的综合强度、易加工成型,可回收利用等优点,但是聚丙烯(PP)材料韧性和耐冲击性能较差,因此用于汽车保险时需要对其进行改性。传统的改性方法是用弹性体增韧聚丙烯,如用乙丙胶(EPDM)、POE、SBS等增韧,工艺已比较成熟,主要缺点是材料的流动性能不好,刚性和强度也随之下降。 发明内容
本发明的主要目的在于,克服现有的汽车保险杠复合材料存在的缺陷,而提供一种新型结构的汽车保险杠复合材料,所要解决的技术问题是使其则增加材料的流动性能,提高材料的刚性和强度,从而更加适用于实用,且具有产业上的利用价值。
本发明与现有技术相比具有明显的优点和有益效果。由以上技术方案可知,为了达到前述发明目的,本发明主要的技术内容如下:
本发明提供了一种碳纳米管和玻璃纤维增韧聚丙烯(PP)材料及其制备方法,其特征在于,该方法包括以下步骤:
(1)按照以下组分及含量(wt%)准备原料:
聚丙烯 40-60
碳纳米管(CNTs) 0.5-2
无碱玻璃纤维 4-8
填料 20-40
分散剂 5-10
成核剂 2-4
抗氧剂 0.5-1.5
润滑剂 1-2
(2)预处理:将碳纳米管(CNTs)和无碱玻璃纤维溶入无水乙醇中,然后加入分散剂,磁力搅拌30min,于100℃下真空干燥12h备用;
(3)将(2)中预处理过的碳纳米管(CNTs)和玻璃纤维,聚丙烯,填料,成核剂,抗氧剂,润滑剂放入混合机中混合均匀;
(4)将混合均匀的原料放入双螺杆挤出机中混炼,控制螺杆机的转速为300r/min,温度为180-200℃,挤出后,冷却制粒得到产品。
经由上述可知,本发明具有方法设备简单,操作方便,成本较低。制备的改性聚丙烯材料,不仅耐冲击性能明显增强,而且机械性能和热稳定性显著提高,流动性好,可广泛适用于汽车保险杠。
借由上述技术方案,本发明至少具有下列优点:
所述碳纳米管为工业级羧基化多壁碳纳米管、工业级氨基化多壁碳纳米管和工业级羟基化多壁碳纳米管,外径为20-40nm,长度>50μm,纯度>90%;
对碳纳米管进行表面预处理,很大程度上防止了碳纳米管团聚;
所述填料包括滑石粉,碳酸钙和硫酸镁,增大了聚丙烯之间的结合力;
所述的分散剂为十六烷基三甲基溴化铵(CTAB),γ-氨丙基三乙氧基硅烷(KH550),聚乙二醇辛基苯基醚(TritonX-100),使混合物分散均匀,提高了聚丙烯的低温力学性能和尺寸稳定性;
所述成核剂为增刚成核剂CA2O2,可提高材料的综合性能;
所述抗氧剂为抗氧剂1010与抗氧剂168的复配物,使聚丙烯在加工过程中具有良好的加工稳定性,避免色泽、性能发生变化;
所述润滑剂为乙撑双硬脂酰胺,改善了聚丙烯材料在加工过程中的流动性。
综上所述,本发明特殊结构的新型耐冲击汽车保险杠复合材料及其制备方法,其具有上述诸多优点及实用价值,并在同类产品中未见有类似的结构设计公开发表或使用而确属创新,其不论在结构上或功能上皆有较大的改进,在技术上有较大的进步,并产生了好用及实用的效果,且较现有的汽车保险杠复合材料及其制备方法具有增进的多项功效,从而更加适于实用,而具有产业的广泛利用价值,诚为一新颖、进步、实用的新设计。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可依照说明书的内容予以实施,以下以本发明的较佳实施例详细说明如后。
具体实施方式
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,对依据本发明提出的车顶涂层材料其具体实施方式、特征及其功效,详细说明如后。
实施例1
(1)预处理:将0.5份工业级羧基化多壁碳纳米管和4份无碱玻璃纤维溶入无水乙醇中,然后加入5份十六烷基三甲基溴化铵(CTAB),磁力搅拌30min,于100℃下真空干燥12h后备用;
(2)将(1)中预处理过的的碳纳米管(CNTs)和玻璃纤维聚丙烯,20份滑石粉,2份成核剂,0.5份抗氧剂,1份润滑剂放入混合机中混合均匀;
(3)将混合均匀的原料放入双螺杆挤出机中混炼,控制螺杆机的转速为300r/min,温度为180-200℃,挤出后,冷却制粒得到产品。
实施例2
(1) 预处理:将1份工业级氨基化多壁碳纳米管
和6份无碱玻璃纤维溶入无水乙醇中,然后加入7份γ-氨丙基三乙氧基硅烷(KH550),磁力搅拌30min,于100℃下真空干燥12h备用;
(2)将(1)中预处理过的碳纳米管(CNTs)和玻璃纤维,50份聚丙烯,32份碳酸钙,3份成核剂,0.8份抗氧剂,1.5份润滑剂放入混合机中混合均匀;
(3)将混合均匀的原料放入双螺杆挤出机中混炼,控制螺杆机的转速为300r/min,温度为180-200℃,挤出后,冷却制粒得到产品。
实施例3
(1)预处理:将2份工业级羟基化多壁碳纳米管和8份无碱玻璃纤维溶入无水乙醇中,然后加入10份聚乙二醇辛基苯基醚(TritonX-100),磁力搅拌30min,于100℃下真空干燥12h备用;
(2)将(1)中预处理过的碳纳米管(CNTs)和玻璃纤维,60份聚丙烯,40份硫酸镁,4份成核剂,1.5份抗氧剂,2份润滑剂放入混合机中混合均匀;
(3)将混合均匀的原料放入双螺杆挤出机中混炼,控制螺杆机的转速为300r/min,温度为180-200℃,挤出后,冷却制粒得到产品。
以上所述,仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,虽然本发明已以较佳实施例揭露如上,然而并非用以限定本发明,任何熟悉本专业的技术人员,在不脱离本发明技术方案范围内,当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例,但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。
Claims (9)
1.一种新型耐冲击汽车保险杠复合材料,其特征在于:该材料包括以下组分及含量(wt%):
聚丙烯 40-60
碳纳米管(CNTs) 0.5-2
无碱玻璃纤维 4-8
填料 20-40
分散剂 5-10
成核剂 2-4
抗氧剂 0.5-1.5
润滑剂 1-2。
2.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的碳纳米管为工业级羧基化多壁碳纳米管、工业级氨基化多壁碳纳米管和工业级羟基化多壁碳纳米管。
3.根据权利要求2所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的碳纳米管外径为20-40nm,长度>50μm,纯度>90%。
4.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的填料包括滑石粉,碳酸钙,硫酸镁。
5.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的分散剂为十六烷基三甲基溴化铵(CTAB),γ-氨丙基三乙氧基硅烷(KH550),聚乙二醇辛基苯基醚(TritonX-100)。
6.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的成核剂为增刚成核剂CA2O2。
7.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料,其特征在于其中所述的抗氧剂为抗氧剂1010与抗氧剂168的复配物。
8.根据权利要求1所述的一种新型耐冲击汽车保险杠复合材料及其制备方法,其特征在于其中所述的润滑剂为乙撑双硬脂酰胺。
9.一种新型耐冲击汽车保险杠复合材料制备方法,其特征在于,该方法包括以下步骤:
(1)按照以下组分及含量(wt%)准备原料:
聚丙烯 40-60
碳纳米管(CNTs) 0.5-2
无碱玻璃纤维 4-8
填料 20-40
分散剂 5-10
成核剂 2-4
抗氧剂 0.5-1.5
润滑剂 1-2;
(2)预处理:将碳纳米管(CNTs)和无碱玻璃纤维溶入无水乙醇中,然后加入分散剂,磁力搅拌30min,于100℃下真空干燥12h备用;
(3)将(2)中预处理过的碳纳米管(CNTs)和玻璃纤维,聚丙烯,填料,成核剂,抗氧剂,润滑剂放入混合机中混合均匀;
(4)将混合均匀的原料放入双螺杆挤出机中混炼,控制螺杆机的转速为300r/min,温度为180-200℃,挤出后,冷却制粒得到产品。
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CN104817770A (zh) * | 2015-04-22 | 2015-08-05 | 重庆交通大学 | 聚丙烯改性复合材料汽车保险杠 |
CN105037922A (zh) * | 2015-04-22 | 2015-11-11 | 重庆交通大学 | 高抗冲击耐老化的汽车保险杠 |
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CN107641305A (zh) * | 2016-07-21 | 2018-01-30 | 汉达精密电子(昆山)有限公司 | 纳米碳管改性的玻璃纤维聚碳酸酯复合材料及其产品 |
CN107722586A (zh) * | 2016-08-11 | 2018-02-23 | 汉达精密电子(昆山)有限公司 | 碳纳米管增强聚碳酸酯/碳纤维复合材料及其成型品 |
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CN104817770A (zh) * | 2015-04-22 | 2015-08-05 | 重庆交通大学 | 聚丙烯改性复合材料汽车保险杠 |
CN105037922A (zh) * | 2015-04-22 | 2015-11-11 | 重庆交通大学 | 高抗冲击耐老化的汽车保险杠 |
CN107641305A (zh) * | 2016-07-21 | 2018-01-30 | 汉达精密电子(昆山)有限公司 | 纳米碳管改性的玻璃纤维聚碳酸酯复合材料及其产品 |
CN107722586A (zh) * | 2016-08-11 | 2018-02-23 | 汉达精密电子(昆山)有限公司 | 碳纳米管增强聚碳酸酯/碳纤维复合材料及其成型品 |
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