CN106675011A - 一种可交联耐辐射高阻燃低烟无卤pa及其制备方法 - Google Patents
一种可交联耐辐射高阻燃低烟无卤pa及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种可交联耐辐射高阻燃低烟无卤PA，包括下列重量份组成：尼龙 65～89份阻燃母粒 11～35份交联敏化剂 0.05～0.2份抗氧剂 0.2～1.0份光稳定剂 0～5份润滑剂 0.2～1.0份。通过本发明得到的PA在具有阻燃效果的同时兼具较好的力学强度，并且能够提高材料的环保等级。
Description
技术领域
本发明涉及一种高分子材料，更具体的说是涉及一种可交联耐辐射高阻燃低烟无卤PA及其制备方法。
背景技术
聚酰胺俗称尼龙(Nylon)，英文名称Polyamide，它是大分子主链重复单元中含有酰胺基团的高聚物的总称。聚酰胺可由内酸胺开环聚合制得，也可由二元胺与二元酸缩聚等得到的。是美国DuPont公司最先开发用于纤维的树脂，于1939年实现工业化。20世纪50年代开始开发和生产注塑制品，以取代金属满足下游工业制品轻量化、降低成本的要求。PA具有良好的综合性能，包括力学性能、耐热性、耐磨损性、耐化学药品性和自润滑性，且摩擦系数低，有一定的阻燃性，易于加工，适于用玻璃纤维和其它填料填充增强改性，提高性能和扩大应用范围。PA的品种繁多，有PA6、PA66、PAll、PAl2、PA46、PA610、PA612、PAl010等，以及近几年开发的半芳香族尼龙PA6T和特种尼龙等新品种。
而现有技术中大多数无卤素阻燃剂以碱金属氢氧化物，但是这类阻燃剂会严重影响产品的机械性能，同时加入的抗辐照剂也会影响整体的机械性能。
发明内容
针对现有技术存在的不足，本发明的目的在于提供一种可交联耐辐射高阻燃低烟无卤高强度的PA及其制备方法。
为实现上述目的，本发明提供了如下技术方案：
一种可交联耐辐射高阻燃低烟无卤PA，包括下列重量份组成：
尼龙65～89份
阻燃母粒11～35份
交联敏化剂0.05～0.2份
抗氧剂0.2～1.0份
光稳定剂0～5份
润滑剂0.2～1.0份。
作为本发明的进一步改进：
所述交联敏化剂的分子式为：
R1(O-R2＝CH2)n；
所述n至少为3。
作为本发明的进一步改进：
所述R2为
作为本发明的进一步改进：
所述R1为
作为本发明的进一步改进：
所述抗氧剂为醋酸铜、碘化铜、碘化钾、抗氧剂1098、抗氧剂168、抗氧剂H10、抗氧剂H161的一种或几种的混合物。
作为本发明的进一步改进：
所述润滑剂为硬脂酸盐、聚乙烯蜡和硅油的混合物。
作为本发明的进一步改进：
所述阻燃母粒包括下列重量份组成：
硅烷改性纳米氢氧化镁60～90份
有机改性蒙脱土0～10份。
作为本发明的进一步改进：
按照比例称取尼龙、阻燃母粒、交联敏化剂、抗氧剂、光稳定剂、润滑剂按照比例进行称取，加入到高速搅拌机中进行混合，混合物经过密炼机密炼，然后依次加入到双螺杆混炼和单螺杆挤出机中挤出造粒，单螺杆挤进料段、熔融段以及摸头温度依次为135℃、145℃、160℃。
首先在阻燃剂的选用上，选用硅烷改性纳米氢氧化镁和有机改性蒙脱土的混合物，在一定程度上由于硅烷的改性纳米氢氧化镁能够与尼龙较好的融合，硅烷改性过后的纳米氢氧化镁本身就对于尼龙材料具有一个补强作用，这样就能够进一步提高整体的强度，同时改性蒙脱土也是一种较好的补强填料，进一步提高尼龙的机械性能。
同时，在交联敏化剂的选择上，选用分子式为R1(O-R2＝CH2)n的物质，其中起到主要作用的是“O-R2＝CH2”基团，能够起到较好的耐辐射效果，同时能够与硅烷改性纳米氢氧化钠起到协同作用，在保证整体具有较好的阻燃性的同时具有更好的机械性能。
特别是在阻燃剂的选择上，并没有任何卤素，形成一个真正意义上的无卤阻燃剂，减少对环境的污染，复合欧盟等发达国家的环保要求。本发明的尼龙材料还具有低烟的效果，在发生火灾的过程中，很少人是被明火烧死，大部分是在烟雾中思维，这样就在阻燃的基础上，即使发生火灾能够更加安全。
具体实施方式
实施例：
一种可交联耐辐射高阻燃低烟无卤PA，包括下列重量份组成：
尼龙65～89份
阻燃母粒11～35份
交联敏化剂0.05～0.2份
抗氧剂0.2～1.0份
光稳定剂0～5份
润滑剂0.2～1.0份。
作为本发明的进一步改进：
所述交联敏化剂的分子式为：
R1(O-R2＝CH2)n；
所述n至少为3。
作为本发明的进一步改进：
所述R2为
作为本发明的进一步改进：
所述R1为
作为本发明的进一步改进：
所述抗氧剂为醋酸铜、碘化铜、碘化钾、抗氧剂1098、抗氧剂168、抗氧剂H10、抗氧剂H161的一种或几种的混合物。
作为本发明的进一步改进：
所述润滑剂为硬脂酸盐、聚乙烯蜡和硅油的混合物。
作为本发明的进一步改进：
所述阻燃母粒包括下列重量份组成：
硅烷改性纳米氢氧化镁60～90份
有机改性蒙脱土0～10份。
作为本发明的进一步改进：
按照比例称取尼龙、阻燃母粒、交联敏化剂、抗氧剂、光稳定剂、润滑剂按照比例进行称取，加入到高速搅拌机中进行混合，混合物经过密炼机密炼，然后依次加入到双螺杆混炼和单螺杆挤出机中挤出造粒，单螺杆挤进料段、熔融段以及摸头温度依次为135℃、145℃、160℃。
其中实施例中的
阻燃剂的配方为：
硅烷改性纳米氢氧化镁70份
有机改性蒙脱土5份
光稳定剂选用：受阻胺光稳定剂Tinuvin 622LD。
将实施例一至四制成测试样品，厚度为1mm，在25℃，65％环境温度下自然放置25小时，进行测试。
首先在阻燃剂的选用上，选用硅烷改性纳米氢氧化镁和有机改性蒙脱土的混合物，在一定程度上由于硅烷的改性纳米氢氧化镁能够与尼龙较好的融合，硅烷改性过后的纳米氢氧化镁本身就对于尼龙材料具有一个补强作用，这样就能够进一步提高整体的强度，同时改性蒙脱土也是一种较好的补强填料，进一步提高尼龙的机械性能。
同时，在交联敏化剂的选择上，选用分子式为R1(O-R2＝CH2)n的物质，其中起到主要作用的是“O-R2＝CH2”基团，能够起到较好的耐辐射效果，同时能够与硅烷改性纳米氢氧化钠起到协同作用，在保证整体具有较好的阻燃性的同时具有更好的机械性能。
以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
Claims (8)
1.一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：包括下列重量份组成：
尼龙65～89份
阻燃母粒11～35份
交联敏化剂0.05～0.2份
抗氧剂0.2～1.0份
光稳定剂0～5份
润滑剂0.2～1.0份。
2.根据权利要求1所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：
所述交联敏化剂的分子式为：
R1(O-R2＝CH2)n；
所述n至少为3。
3.根据权利要求2所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：所述R2为
4.根据权利要求3所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：所述R1为
5.根据权利要求4所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：所述抗氧剂为醋酸铜、碘化铜、碘化钾、抗氧剂1098、抗氧剂168、抗氧剂H10、抗氧剂H161的一种或几种的混合物。
6.根据权利要求5所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：所述润滑剂为硬脂酸盐、聚乙烯蜡和硅油中至少一种。
7.根据权利要求6所述的一种可交联耐辐射高阻燃低烟无卤PA，其特征在于：
所述阻燃母粒包括下列重量份组成：
硅烷改性纳米氢氧化镁60～90份
有机改性蒙脱土0～10份。
8.如权利要求1至7所述的一种可交联耐辐射高阻燃低烟无卤PA的制备方法，其特征在于：
按照比例称取尼龙、阻燃母粒、交联敏化剂、抗氧剂、光稳定剂、润滑剂按照比例进行称取，加入到高速搅拌机中进行混合，混合物经过密炼机密炼，然后依次加入到双螺杆混炼和单螺杆挤出机中挤出造粒，单螺杆挤进料段、熔融段以及摸头温度依次为135℃、145℃、160℃。
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