CN103694680A - 一种高流动良表面增强聚酰胺复合材料及其制备方法 - Google Patents

一种高流动良表面增强聚酰胺复合材料及其制备方法 Download PDF

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CN103694680A
CN103694680A CN201310695784.XA CN201310695784A CN103694680A CN 103694680 A CN103694680 A CN 103694680A CN 201310695784 A CN201310695784 A CN 201310695784A CN 103694680 A CN103694680 A CN 103694680A
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polyamide compoiste
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张强
孟成铭
陈光伟
郭建鹏
娄小安
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Shanghai Rizhisheng New Technology Development Co Ltd
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Abstract

本发明涉及一种高流动良表面增强聚酰胺复合材料,该材料由以下重量配比的原料制成:尼龙:20-70%,PA6:5-20%增强纤维:25-60%,减链剂:0.5-1%,成核剂:0.2-0.6%,抗氧剂:0.2-0.4%,润滑剂:0.2-1%。本发明还提供了聚酰胺复合材料的制备方法。本发明的技术特点在于,加入高流动PA6、减链剂、成核剂等助剂改善尼龙分子量分布和结晶性能,提高复合材料的流动性能,利用本发明制得的高流动聚酰胺复合材料机械强度优异,特别好的流动性能和表观质量,熔接痕强度高,特别适用于复杂的外观有要求的大型功能部件材料。

Description

一种高流动良表面增强聚酰胺复合材料及其制备方法
技术领域
本发明涉及一种聚酰胺复合材料技术领域,具体地说,是关于一种高流动良表面增强聚酰胺复合材料及其制备方法。
背景技术
聚酰胺具有很好的机械强度和刚度,耐磨损特性好等优点被广泛用于汽车部件,机械部件,电子电气领域等,是五大工程塑料用量之首,在很多应用上代替传统的金属材料。通过纤维矿物等增强改性制得的尼龙复合材料具有高强度、高耐热、低收缩等优秀性能,作为工程塑料材料在传统领域应用广泛,但进一步的材料应用扩展对一些制品的外观提出了更高的要求,材料不仅需要良好的机械性能,外观质量也至关重要。随着玻纤、矿物等增强材料的加入,随着其含量的增加,制得的增强尼龙复合材料成型流动性变差、纤维和树脂的相容性变差导致材料的成型困难、熔接痕强度降低、外观质量差等一系列问题而影响产品的最终使用。
美国专利6191207通过使用玻纤材料控制达到改善这一问题,其要求玻纤主体细度15-30μm,长径比10-20范围,这样制得的复合材料表观质量好,但流动性改善不大且玻纤使用受到限制。
国内专利申请公开号102888099A“不露纤的玻纤有机增强尼龙66及其制作工艺”采取一种有机玻纤改性剂,改善材料的表面光洁度和流动性,但该助剂属于有机苯胺化合物,熔点低加工过程易挥发气味大对人的健康有害。
发明内容
本发明的目的是针对现有技术中的不足,提供一种高流动良表面增强聚酰胺复合材料。
本发明的再一的目的是,提供一种聚酰胺复合材料的制备方法。
为实现上述目的,本发明采取的技术方案是:
一种高流动良表面增强聚酰胺复合材料,该材料由以下重量配比的原料制成:
尼龙:20-70%,
PA6: 5-20%
增强纤维:25-60%,
减链剂:0.5-1%,
成核剂:0.2-0.6%,
抗氧剂:0.2-0.4%, 
润滑剂:0.2-1%,
所述的尼龙树脂为普通注塑级树脂,PA66,PA6,PA612,PA12等的一种或多种任一粘度单独或组合物。
所述的PA6为高熔指PA6,其熔融指数在235℃*2.16kg条件下大于200g/min,可以是株洲时代新材料公司生产的PA6XC020、PA6XC030、PA6XC040 、PA6XC050优选的是PA6XC030。
所述的增强纤维为无碱玻璃玻纤、碳纤维、硼砂纤维、硫酸钙晶须、高岭土、硅灰石等一种或多种。
所述的减链剂为脂肪族羧酸盐混合物,优选的是广州咏久精细化工的HL-10。
所述的成核剂为一种二价金属盐,可以是CaF2、CaCl2、硬脂酸钙、CuCl2等的一种或几种,优选的为CaCl2
所述的抗氧剂为受阻酚类抗氧剂与亚磷酸脂抗氧剂复合体系,可以是168与HD98按1:1比例复配。
所述的润滑剂为硬脂酸酰胺、石蜡、聚乙烯蜡或聚丙烯蜡、硅氧烷中的一种或几种。
为实现上述第二个目的,本发明采取的技术方案是:聚酰胺复合材料制备方法,如下:按重量配比称取原料,尼龙:20-70%,PA6:5-20%,减链剂:0.5-1%,成核剂:0.1-1%,抗氧剂:0.2-0.6%,润滑剂:0.2-1%。将原料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,温度控制210-280℃,螺杆转速控制在180-600转/分钟,挤出造粒。
本发明的技术特点在于,加入高流动PA6、减链剂、成核剂等助剂改善尼龙分子量分布和结晶性能,提高复合材料的流动性能,利用本发明制得的高流动聚酰胺复合材料机械强度优异,特别好的流动性能和表观质量,熔接痕强度高,特别适用于复杂的外观有要求的大型功能部件材料。
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。
下面结合实施例,对本发明作进一步详细说明。这些实施例仅用于说明本发明而不用于限制本发明的范围。下列实施例中未注明具体条件的实验方法,通常按照常规条件,或按照制造厂商所建议的条件,以下实施例所指含量均为重量百分含量。
需要说明的是,其中PA66选自神马集团PA66FYR2.7 粘度2.7、PA6MF800为江苏瑞美福生产,玻璃纤维为巨石集团ER13-2000-988A,碳纤维为东丽公司 T300,高岭土为普通级,减链剂为广州咏久精细化工的HL-10,成核剂优选CaCl2,抗氧剂为168、1098按1:1配比组合物,润滑剂为硅酮。PA6为高熔指PA6,其熔融指数在235℃*2.16kg条件下大于200g/min(需要说明的是熔融指数大于200的PA6都可以有很好的效果)。
实施例一
(1)按重量配比称取原料PA66:58.4%,PA6XC030:10%,减链剂:0.3%,成核剂:0.5%, 抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为30%的长玻纤由双螺杆挤出机玻纤口加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为260℃。
实施例二
(1)按重量配比称取原料PA66:38.1%,PA6XC030:15%,减链剂:0.6%,成核剂:0.5%, 抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为45%的长玻纤由双螺杆挤出机玻纤口加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为260℃。
实施例三
(1)按重量配比称取原料PA66:63.1%,PA6XC030:15%,减链剂:0.6%,成核剂:0.5%, 抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为20%的碳纤维由双螺杆挤出机玻纤口加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为260℃。
实施例四
(1)按重量配比称取原料PA6:53.1%,PA6XC030:15%,高岭土:30%,减链剂:0.8%,成核剂:0.3%, 抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为245℃。
实施例五
(1)按重量配比称取原料PA66:22.5%,PA6XC030:20%,减链剂:1%,成核剂:0.5%, 抗氧剂:0.4%,润滑剂:0.6%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为55%的玻璃纤维由双螺杆挤出机玻纤口加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为250℃。
对比例一
(1)按重量配比称取原料PA66:53.7%,成核剂:0.5%,抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为45%的玻璃纤维由双螺杆挤出机玻纤口加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为250℃。
对比例二
(1)按重量配比称取原料PA66:49.2%,PA6XC030:20%,抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为30%的玻璃纤维由双螺杆挤出机玻纤口加入。
(4)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为250℃。
对比例三
(1)按重量配比称取原料PA66:49.2%,抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)将重量比为50%的玻璃纤维由双螺杆挤出机玻纤口加入。
(4)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为250℃。
对比例四
(1)按重量配比称取原料PA6:69.2%,高岭土:30%,抗氧剂:0.4%,润滑剂:0.4%。
(2)将上述原料于高混机共混5分钟,后由双螺杆挤出机主喂料加入。
(3)上述物料经双螺杆挤出机挤出并造粒,螺杆机的转速为500转/分,温度为250℃。
根据实施例和对比例制得的样品,进行性能测试对比,采用ASTM标准,测试性能对比如表1所示。
表一
Figure 201310695784X100002DEST_PATH_IMAGE001
以上内容是结合具体的优选实施方式对本发明所做的进一步详细说明,不能认定本发明的具体实施例只局限于这些说明。对于本发明所述技术领域的普通技术人员来说,在不脱离本发明构思的前提下所做出若干等同替代变型都应当视为属于本发明的保护范围。

Claims (9)

1.一种高流动良表面增强聚酰胺复合材料,其特征在于,该材料由以下重量配比的原料制成:
尼龙:20-70%,
PA6: 5-20%
增强纤维:25-60%,
减链剂:0.5-1%,
成核剂:0.2-0.6%,
抗氧剂:0.2-0.4%, 
润滑剂:0.2-1%。
2.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的尼龙树脂为普通注塑级树脂,所述的尼龙选自PA66,PA6,PA612,PA12一种或多种。
3.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的PA6为高熔指PA6,其熔融指数在235℃*2.16kg条件下大于200g/min。
4.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的增强纤维为无碱玻璃玻纤、碳纤维、硼砂纤维、硫酸钙晶须、高岭土、硅灰石一种或多种。
5.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的减链剂为脂肪族羧酸盐混合物。
6.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的成核剂选自CaF2、CaCl2、硬脂酸钙、CuCl2的一种或几种。
7.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的抗氧剂为168与HD98按1:1比例复配。
8.根据权利要求1所述的聚酰胺复合材料,其特征在于,所述的润滑剂为硬脂酸酰胺、石蜡、聚乙烯蜡或聚丙烯蜡、硅氧烷中的一种或几种。
9.权利要求1-8任一所述的聚酰胺复合材料制备方法,如下:按重量配比称取原料,尼龙:20-70%,PA6:5-20%,减链剂:0.5-1%,成核剂:0.1-1%,抗氧剂:0.2-0.6%,润滑剂:0.2-1%,将原料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,温度控制210-280℃,螺杆转速控制在180-600转/分钟,挤出造粒。
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CN110791086B (zh) * 2019-10-31 2022-06-10 广东轻工职业技术学院 一种高熔接痕强度玻纤增强聚酰胺复合材料及其制备方法
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