CN112500701A - 一种高耐磨改性pa6t复合材料 - Google Patents
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Abstract
本发明公开了一种高耐磨改性高分子材料,更具体的说,是一种高耐磨改性PA6T复合材料。该材料由以下配方组成:PA6T材料65%~80%,玻纤15%~35%,耐磨填料1%~10%,抗氧剂0.5%~1.5%,热稳定剂0.5%~1.5%,偶联剂0.5%~1.5%,其他助剂0.5%~1.5%。以上组分经由双螺杆挤出混合造粒,从而获得一种填充改性高耐磨PA6T复合材料。本发明克服了PA6T材料韧性差、耐磨性能不足的缺点,通过填充改性,在增强材料强度和韧性的同时,有效降低了材料的摩擦系数,实现了耐磨性能的提升。本发明所涉及的PA6T复合材料在机械制造、电子电工、汽车等领域具有重要的应用价值和产品竞争力。
Description
技术领域
本发明涉及一种耐磨高分子材料的技术领域,更具体地说,是一种耐磨改性PA6T尼龙材料。
背景技术
尼龙是一种应用十分广泛的工程塑料,在国民经济建设中占有重要的地位。PA6T作为近年来备受关注的一种新型特种工程塑料,因其强度高、耐高温、绝缘性能好、化学性质稳定等性能优点,被广泛应用于机械制造、电子电工、汽车等工业制造领域。性能优异的PA6T材料主要被国外的化工企业所垄断,目前国内生产的PA6T材料在综合性能上与国外相比还有一定的差距,如:难加工、韧性差,耐磨性能不足等。因此,需要对目前国产的PA6T材料进行改性,提升其各方面的性能,才能满足工业生产的需求。目前已有的几种改性PA6T材料主要针对其力学强度和韧性的提升,以求达到一定的刚韧平衡;或是关注其阻燃性能的改善,但对于PA6T改性料的耐磨性能,则研究较少。因此,一定程度上限制了PA6T材料的应用与发展。
本发明的目的在于克服PA6T材料耐磨性能的不足,通过共混改性,在保证其力学强度和韧性的同时,赋予其优良的耐磨性能,使其在对力学性能要求较高的耐磨产品上的应用具有一定的优势。
发明内容
本发明提供了一种耐磨改性PA6T尼龙材料,该材料同时具备高强度、高模量、高韧性与高耐磨性的优良综合性能。
本发明所阐述的材料由以下配方组成(各组分按质量分数计算):
65%~80%的PA6T材料;15%~30%的玻纤;1%~10%的耐磨填料,耐磨填料的组成包括但不限于二硫化钼、石墨、玻璃微珠、聚四氟乙烯粉末中的一种或几种;0.5~1.5%的抗氧剂,抗氧剂包括但不限于1010、1076和1098中的一种或几种;0.5%~1.5%的热稳定剂,热稳定剂包括但不限于硬脂酸钙、硬脂酸钡和硬脂酸铅中的一种或几种;0.5%~1.5%的偶联剂,偶联剂包括但不限于KH550、KH560、TMC-TTS和TMC-114中的一种或几种;0.5%~1.5%的其他助剂。
更具体的,各原材料组份的质量分数为:
65%~70%的PA6T材料; 30%的玻纤;1%~10%的耐磨填料,耐磨填料的组成包括但不限于二硫化钼、石墨、玻璃微珠和聚四氟乙烯粉末中的一种或几种;1%的抗氧剂,抗氧剂包括但不限于1010、1076和1098中的一种或几种;1%的热稳定剂,热稳定剂包括但不限于硬脂酸钙、硬脂酸钡和硬脂酸铅中的一种或几种;0.5%的偶联剂,偶联剂包括但不限于KH550、KH560、TMC-TTS和TMC-114中的一种或几种;0.5%的其他助剂。
本发明的优势在于克服了PA6T材料耐磨性能的不足,在保证其高强度、高模量、高韧性的同时,赋予其优良的耐磨性能。改性后的PA6T复合材料与传统尼龙材料相比,具有更明显的性能优势,与国外进口同类型尼龙产品的性能相当,预期在市场上会有一定的竞争优势。
具体实施方式
本发明所提供的耐磨改性PA6T尼龙材料的组成包括但不限于如下表1所示的6种;
本发明所提供的耐磨改性PA6T尼龙材料在生产工艺上,可按照以下工艺进行:
将偶联剂与耐磨填料按比例在50 ℃条件下混合10 min后常温放置8h;将PA6T与预处理的耐磨填料、抗氧剂、热稳定剂以及其他助剂按比例在高混机中低速预混1 min,再中速混合5 min;将混合后的原料从主喂料、玻纤按比例从侧喂料,通过双螺杆挤出机混炼挤出,水冷拉条造粒,再经过振动筛分、脱水后制备得到耐磨改性的PA6T尼龙材料,分别标记为配方1、配方2、配方3、配方4、配方5以及配方6;
通过上述工艺方法得到的6种改性PA6T尼龙材料,制备样条,性能测试后得到相应的关键性能结果如下表2所示。
表格:
表1. 耐磨改性PA6T尼龙材料配方组成(重量百分比)
组成 | 配方1 | 配方2 | 配方3 | 组成 | 配方4 | 配方5 | 配方6 |
PA6T | 66% | 62% | 57% | PA6T | 66% | 62% | 57% |
玻纤 | 30% | 30% | 30% | 玻纤 | 30% | 30% | 30% |
二硫化钼 | 1% | 5% | 10% | 石墨 | 1% | 5% | 10% |
抗氧剂 | 1% | 1% | 1% | 抗氧剂 | 1% | 1% | 1% |
热稳定剂 | 1% | 1% | 1% | 热稳定剂 | 1% | 1% | 1% |
偶联剂 | 0.5% | 0.5% | 0.5% | 偶联剂 | 0.5% | 0.5% | 0.5% |
其他助剂 | 0.5% | 0.5% | 0.5% | 其他助剂 | 0.5% | 0.5% | 0.5% |
表2. 耐磨改性PA6T尼龙材料关键性能检测结果
检测项目 | 检测标准 | 单位 | 配方1 | 配方2 | 配方3 | 配方4 | 配方5 | 配方6 |
拉伸强度 | ISO 527 | MPa | 196 | 183 | 170 | 184 | 171 | 166 |
断裂伸长率 | ISO 527 | % | 3.3 | 2.9 | 2.6 | 3.1 | 2.5 | 2.5 |
弯曲强度 | ISO 178 | MPa | 241 | 223 | 209 | 230 | 216 | 201 |
弯曲模量 | ISO 178 | GPa | 9.2 | 8.1 | 8.0 | 8.8 | 7.9 | 7.7 |
IZOD冲击强度 | ISO 180 | KJ/m<sup>2</sup> | 8.5 | 7.9 | 7.1 | 8.5 | 7.3 | 6.9 |
摩擦系数 | ASTM G99 | / | 0.36 | 0.17 | 0.09 | 0.39 | 0.21 | 0.18 |
Claims (2)
1.一种高耐磨改性PA6T材料,其特征在于,由以下质量分数的原料配方组成:(1)65%~80%的PA6T材料;(2)15%~30%的玻纤;(3)1%~10%的耐磨填料,耐磨填料的组成包括但不限于二硫化钼、石墨、玻璃微珠和聚四氟乙烯粉末中的一种或几种;(4)0.5%~1.5%的抗氧剂,抗氧剂包括但不限于1010、1076和1098中的一种或几种;(5)0.5%~1.5%的热稳定剂,热稳定剂包括但不限于硬脂酸钙、硬脂酸钡和硬脂酸铅中的一种或几种;(6)0.5%~1.5%的偶联剂,偶联剂包括但不限于KH550、KH560、TMC-TTS和TMC-114中的一种或几种;(7)0.5%~1.5%的其他助剂。
2.根据权利要求1所述的一种高耐磨改性PA6T材料,其特征在于,各原料组份的质量分数为:(1)65%~70%的PA6T材料;(2)30%的玻纤材料;(3)1%~10%的耐磨填料;(4)1%的抗氧剂,抗氧剂包括但不限于1010、1076和1098中的一种或几种;(5)1%的热稳定剂,热稳定剂包括但不限于硬脂酸钙、硬脂酸钡和硬脂酸铅中的一种或几种;(6)0.5%的偶联剂,偶联剂包括但不限于KH550、KH560、TMC-TTS和TMC-114中的一种或几种;(7)0.5%的其他助剂。
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