CN103788643A - 高抗爆压强度玻纤增强耐水解pa66材料及其制备方法 - Google Patents

高抗爆压强度玻纤增强耐水解pa66材料及其制备方法 Download PDF

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CN103788643A
CN103788643A CN201410040687.1A CN201410040687A CN103788643A CN 103788643 A CN103788643 A CN 103788643A CN 201410040687 A CN201410040687 A CN 201410040687A CN 103788643 A CN103788643 A CN 103788643A
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CN103788643B (zh
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张强
杨涛
陈光伟
王尹杰
金幸�
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SHANGHAI RIZHISHENG TECHNOLOGY CO., LTD.
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Abstract

本发明公开了一种高抗爆压强度玻纤增强耐水解PA66材料及其制备方法；其包括以下重量百分比含量的各组分：PA66：46～71％，玻璃纤维：25～50％，扩链剂：0.5～2％，偶联剂0.2～0.6％，抗氧剂：0.2～0.4％，润滑剂：0.2～1％。制备时，准确称取除玻纤以外的原料放入高混机混合均匀，从主喂料口加入，玻璃纤维从玻纤口加入，温度控制：230～280℃，主机转速30Hz～45Hz，挤出造粒即可。利用本发明制备的材料具有特别优异的机械性能，静压测试＞50Mpa，水解保持率高，24小时水煮后静压测试大于30Mpa，性能稳定性高，特别适用于清洗水枪部件材料，以及对抗爆压强度要求较高的消防领域。

Description

高抗爆压强度玻纤增强耐水解PA66材料及其制备方法
技术领域
本发明涉及PA66材料领域，具体涉及一种高抗爆压强度玻纤增强耐水解PA66材料及其制备方法。
背景技术
PA66是聚酰胺家族中产量最大、用途最广泛的品种之一，是优良的工程塑料。它具有耐磨、自润滑、耐冲击等诸多优良性能，广泛应用于汽车、机械、电子等领域。但是同时PA66由于吸水性大，导致尺寸不稳定，干态和湿态性能差距大等缺点。汽车行业的发展带动了清洗行业的飞速发展，对于清洗水枪，其对材料的爆压强度有比较高的要求，要求常态静压测试＞50Mpa，水解保持率高，24小时水煮后静压测试大于30Mpa，玻纤增强PA66是清洗水枪的常用材料，但目前国内普通的PA66加纤材料存在着抗爆压强度不高、性能不稳定波动性大、耐水解保持率低等缺点，严重限制了在这一领域的应用。
专利CN101191015A公开了“一种尼龙66复合材料及其制法和应用”，利用其发明制备的材料具有高的耐水解性能，但是其性能不能满足对高爆压强度的要求，而且成本高，生产稳定性不易控制。
发明内容
本发明的目的就是为了克服上述现有技术不足而提供一种材料机械性能高、稳定性好、耐水解保持率好、抗爆压强度特别高的高抗爆压强度玻纤增强耐水解PA66材料及其制备方法。
本发明的目的可以通过以下技术方案来达到：
本发明涉及一种高抗爆压强度玻纤增强耐水解PA66材料，所述材料包括以下重量百分比含量的各组分：
Figure BDA0000463039130000011
其中，PA66优选为48.3～71.8％，玻璃纤维优选为25～50％。偶联剂优选为0.3％，抗氧剂优选为0.4％，润滑剂优选为0.5％。
优选的，所述的PA66树脂为普通注塑级树脂，PA66的树脂相对粘度为2.2～3.4。
优选的，所述的玻璃纤维为无碱短切玻纤，纤维单丝直径7～13μm，纤维长度3～6mm。
优选的，所述玻璃纤维为经过特殊处理的耐水解级玻璃纤维。更优选的是重庆国际的301X。
优选的，所述的扩链剂为带有聚碳酸酯反应基团的尼龙6。更优选的是BRUGGOLE生产的M1251。
优选的，所述偶联剂为硅烷偶联剂、钛酸酯偶联剂、铝酸酯偶联剂中的一种或两种。更优选偶联剂为硅烷。
优选的，所述抗氧剂为受阻酚类抗氧剂与亚磷酸脂抗氧剂复合体系。更优选168与HD98按1∶1比例复配。
优选的，所述的润滑剂为硬脂酸酰胺、石蜡、聚乙烯蜡或聚丙烯蜡、硅酮、硅氧烷中的一种或几种。
本发明还涉及一种前述的高抗爆压强度玻纤增强耐水解PA66材料组合物的制备方法，所述方法包括：按重量配比称取原料，PA66：46～71％，扩链剂：0.5～2％，偶联剂0.1～0.5％，抗氧剂：0.2～0.6％，润滑剂：0.2～1％；将除所述玻璃纤维外的各组分按上述比例混合后经喂料机加入双螺杆挤出机中，所述玻璃纤维由双螺杆挤出机玻纤入口加入，进行挤出造粒。
优选的，所述双螺杆挤出机的螺杆转速控制在30Hz～45Hz，温度控制第一段230～-240℃、第二段250～260℃、第三段250～260℃、第四段260～270℃、第五段270～280℃、第六段270～280℃、第七段260～270℃、第八段260～270℃、第九段260～270℃、第十段250～260℃
本发明在玻纤增强PA66中添加扩链剂、采取经处理的耐水解级短切玻纤、偶联剂、抗氧剂、润滑剂等助剂，通过提高尼龙分子链的粘度及稳定性，提高玻纤与尼龙树脂的结合性，提高材料的耐水解性能，改善加工爽滑性，并利用工艺控制，提高玻纤的分散性和尺寸保留长度，提高玻纤增强PA66机械性能和水解保持性能。
与现有技术相比，本发明具有的有益效果为：本发明提供了一种性能稳定，抗高爆压强度、水解保持率高的玻纤增强PA66复合材料，该材料具有特别优异的机械性能，静压测试＞50Mpa，水解保持率高，24小时水煮后静压测试大于30Mpa，性能稳定性高，特别适用于清洗水枪部件材料，以及对抗爆压强度要求较高的消防领域。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显：
图1为本发明的高抗爆压强度玻纤增强耐水解PA66材料组合物的制备工艺流程示意图。
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
本实施例1～6涉及一种高抗爆压强度玻纤增强耐水解PA66材料组合物，其制备方法包括以下步骤：
(1)按照表1中实施例1-6的组分及含量进行备料，其中尼龙为尼龙66，相对粘度为2.2～3.4；玻璃纤维为耐水解级玻纤，纤维单丝直径7～13μm，纤维长度3～6mm，优选的是重庆国际的301x；扩链剂为带有聚碳酸酯反应基团的尼龙6，优选的是BRUGGOLE生产的M1251；抗氧剂为HD98与168按重量比1∶1复配而成、润滑分散剂为硅酮。
(2)如图1所示，将除玻璃纤维外的各原料组分按上述比例混合后经喂料机加入双螺杆挤出机中，玻璃纤维由双螺杆挤出机玻纤入口加入，进行挤出造粒。
螺杆转速控制在30Hz～45Hz，温度控制第一段230～240℃、第二段250～260℃、第三段250～260℃、第四段260～270℃、第五段270～280℃、第六段270～280℃、第七段260～270℃、第八段260～270℃、第九段260～270℃、第十段250～260℃。本实施例所提供的爆压强度高的增强PA66材料，可以作为清洗水枪材料的专用料
对比例1～2
(1)按照表1中对比例1～2的组分及含量进行备料，其中尼龙为尼龙66，相对粘度为2.2～3.4；玻璃纤维为普通无碱玻纤，可以是巨石集团的GF988A；扩链剂为带有聚碳酸酯反应基团的尼龙6，优选的是BRUGGOLE生产的M1251；抗氧剂为HD98与168按重量比1∶1复配而成、润滑分散剂为硅酮。
(2)如图1所示，将除玻璃纤维外的各原料组分按上述比例混合后经喂料机加入双螺杆挤出机中，玻璃纤维由双螺杆挤出机玻纤入口加入，进行挤出造粒。
螺杆转速控制在30Hz～45Hz，温度控制第一段230～240℃、第二段250～260℃、第三段250～260℃、第四段260～270℃、第五段270～280℃、第六段270～280℃、第七段260～270℃、第八段260～270℃、第九段260～270℃、第十段250～260℃。
表1
Figure BDA0000463039130000041
上述制备的材料的按ISO标准测试机械性能，并将对应的材料注塑成水枪样品，测试常态和24小时水煮后的爆压强度，如下表2：
表2
由表2可知：由对比例1、2制备的普通增强PA66材料性能不高，耐水解性不佳及爆压强度不稳定，按实施例1～6制备的高抗爆压强度玻纤增强耐水解PA66材料，性能较高，稳定满足常态静压强度测试大于50Mpa，耐水解性能良好，100℃水煮24小时后爆压强度大于30Mpa，适用于清洗水枪部件材料，以及对抗爆压强度要求较高的消防领域的应用要求。
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)

1.一种高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述材料包括以下重量百分比含量的各组分：
2.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述PA66树脂为普通注塑级树脂，其树脂粘度为2.2～3.4。
3.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述玻璃纤维为无碱短切玻纤，纤维单丝直径7～13μm，纤维长度3～6mm。
4.根据权利要求1或3所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述玻璃纤维为耐水解级玻璃纤维。
5.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述扩链剂为带有聚碳酸酯反应基团的尼龙6。
6.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述偶联剂为硅烷偶联剂、钛酸酯偶联剂、铝酸酯偶联剂中的一种或两种。
7.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述抗氧剂为受阻酚类抗氧剂与亚磷酸脂抗氧剂复合体系。
8.根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料，其特征在于，所述润滑剂为硬脂酸酰胺、石蜡、聚乙烯蜡或聚丙烯蜡、硅酮、硅氧烷中的一种或几种。
9.一种根据权利要求1所述的高抗爆压强度玻纤增强耐水解PA66材料的制备方法，其特征在于，所述方法包括：将除所述玻璃纤维外的各组分混合后经喂料机加入双螺杆挤出机中，所述玻璃纤维由双螺杆挤出机玻纤入口加入，进行挤出造粒。
10.根据权利要求9所述的高抗爆压强度玻纤增强耐水解PA66材料的制备方法，其特征在于，所述双螺杆挤出机的螺杆转速控制在30Hz～45Hz，温度控制：第一段230～240℃、第二段250～260℃、第三段250～260℃、第四段260～270℃、第五段270～280℃、第六段270～280℃、第七段260～270℃、第八段260～270℃、第九段260～270℃、第十段250～260℃。
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