CN109370206A - 一种高彭松性的异形尼龙及其制备方法 - Google Patents
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Abstract
本发明公开了一种高彭松性的异形尼龙及其制备方法,包括聚酰胺树脂110~130份,硅烷偶联剂2~4份,膨润土17~22份,发泡剂0.5~2份,填充剂1~3份,抗氧剂0.4~0.8份,润滑剂1~2份。将膨润土中加入硅烷偶联剂进行改性,并加入质量分数75%的乙醇进行充分搅拌,搅拌均匀后放入烘干箱烘干;将聚酰胺树脂至于110℃烘干箱内热烘4小时去除水分;将烘干后的聚酰胺树脂、经硅烷偶联剂改性后的膨润土、发泡剂、填充剂、抗氧剂和润滑剂加入反应釜内熔融并搅拌均匀,得到混合液;将S2中的混合液加入双螺旋挤出机内并通过异形喷孔喷丝板挤出,挤出后经热辊进行牵伸,并通过热压缩空气流进行膨化成型将挤出后的物料进行冷却、风干、造粒及包装。
Description
技术领域
本发明涉及高分子技术领域,具体为一种高彭松性的异形尼龙及其制备方法。
背景技术
聚酰胺树脂主链上含有许多重复的酰胺基,用作塑料时称尼龙,具有无毒、质轻、优良的机械强度、耐磨性及较好的耐腐蚀性,因此广泛应用于机械、化工、仪表、汽车等工业中,其中,在保持汽车安全性能的基础上,实现汽车的轻量化生产是一个重要的方向,且在汽车零部件中,有许多都由金属材料替换为塑料材质,则需要尼龙具有高彭松性,为此我们提出一种高彭松性的异形尼龙及其制备方法用于解决上述问题。
发明内容
本发明的目的在于提供一种高彭松性的异形尼龙及其制备方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂110~130份,硅烷偶联剂2~4份,膨润土17~22份,发泡剂0.5~2份,填充剂1~3份,抗氧剂0.4~0.8份,润滑剂1~2份。
优选的一种实施案例,以重量份计,其原料组成包括:聚酰胺树脂115份,硅烷偶联剂2份,膨润土18份,发泡剂0.9份,填充剂1.5份,抗氧剂0.5份,润滑剂1.2份。
优选的一种实施案例,以重量份计,其原料组成包括:聚酰胺树脂120份,硅烷偶联剂3份,膨润土20份,发泡剂1.5份,填充剂2.2份,抗氧剂0.6份,润滑剂1.6份。
优选的一种实施案例,以重量份计,其原料组成包括:聚酰胺树脂125份,硅烷偶联剂4份,膨润土21份,发泡剂1.8份,填充剂2.7份,抗氧剂0.7份,润滑剂1.8份。
优选的,所述聚酰胺树脂为聚酰胺-6或聚酰胺-66中的一种,所述膨润土为有机膨润土或钠基膨润土中的一种。
优选的,所述发泡剂为石油醚、三氯氟甲烷或二氯二氟甲烷中的一种,所述填充剂为石墨烯或玻化微珠中的一种。
优选的,所述抗氧剂为二烷基二苯胺、二氨基甲苯衍生物或1,8-二氨基萘衍生物中的一种,所述润滑剂为脂肪酸盐、硬脂酸酰胺或甲撑双硬脂酸酰胺中的一种。
一种高彭松性的异形尼龙的制备方法,包括如下步骤:
S1、原料准备:将膨润土中加入硅烷偶联剂进行改性,并加入质量分数75%的乙醇进行充分搅拌,搅拌均匀后放入烘干箱烘干;将聚酰胺树脂至于110℃烘干箱内热烘4小时去除水分;
S2、原料混合:将烘干后的聚酰胺树脂、经硅烷偶联剂改性后的膨润土、发泡剂、填充剂、抗氧剂和润滑剂加入反应釜内熔融并搅拌均匀,得到混合液;
S3、挤出成型:将S2中的混合液加入双螺旋挤出机内并通过异形喷孔喷丝板挤出,挤出后经热辊进行牵伸,并通过热压缩空气流进行膨化成型;
S4、成品处理:将挤出后的物料进行冷却、风干、造粒及包装
优选的,双螺杆挤出机加工温度为250~270℃,螺杆转速为250~280rpm/min。
与现有技术相比,本发明的有益效果是:膨润土经硅烷偶联剂和乙醇溶剂改性后能够很好地连接到聚酰胺树脂中形成多孔结构,添加发泡剂使得聚酰胺树脂经热压缩空气流进行膨化,使得尼龙具有高彭松性,填充剂填充在发泡孔内,避免发泡孔坍塌,使得尼龙强度得到提高,双螺旋挤出机喷丝板为异形喷孔,使得挤出的尼龙丝形成异形。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本发明提供一种实施方式:一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂115份,硅烷偶联剂2份,膨润土18份,发泡剂0.9份,填充剂1.5份,抗氧剂0.5份,润滑剂1.2份。
进一步的,聚酰胺树脂为聚酰胺-6,膨润土为有机膨润土。
进一步的,发泡剂为石油醚,填充剂为石墨烯。
进一步的,抗氧剂为二烷基二苯胺,润滑剂为脂肪酸盐。
一种高彭松性的异形尼龙的制备方法,包括如下步骤:
S1、原料准备:将膨润土中加入硅烷偶联剂进行改性,并加入质量分数75%的乙醇进行充分搅拌,搅拌均匀后放入烘干箱烘干;将聚酰胺树脂至于110℃烘干箱内热烘4小时去除水分;
S2、原料混合:将烘干后的聚酰胺树脂、经硅烷偶联剂改性后的膨润土、发泡剂、填充剂、抗氧剂和润滑剂加入反应釜内熔融并搅拌均匀,得到混合液;
S3、挤出成型:将S2中的混合液加入双螺旋挤出机内并通过异形喷孔喷丝板挤出,挤出后经热辊进行牵伸,并通过热压缩空气流进行膨化成型;
S4、成品处理:将挤出后的物料进行冷却、风干、造粒及包装
进一步的,双螺杆挤出机加工温度为250~270℃,螺杆转速为250~280rpm/min。
实施例2
本发明提供一种实施方式:一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂120份,硅烷偶联剂3份,膨润土20份,发泡剂1.5份,填充剂2.2份,抗氧剂0.6份,润滑剂1.6份。
进一步的,聚酰胺树脂为聚酰胺-6,膨润土为有机膨润土。
进一步的,发泡剂为三氯氟甲烷,填充剂为石墨烯。
进一步的,抗氧剂为二氨基甲苯衍生物,润滑剂为硬脂酸酰胺。
实施例3
本发明提供一种实施方式:一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂125份,硅烷偶联剂4份,膨润土21份,发泡剂1.8份,填充剂2.7份,抗氧剂0.7份,润滑剂1.8份。
进一步的,聚酰胺树脂为聚酰胺-66,膨润土为钠基膨润土中。
进一步的,发泡剂为二氯二氟甲烷,填充剂为玻化微珠。
进一步的,抗氧剂为1,8-二氨基萘衍生物,润滑剂为甲撑双硬脂酸酰胺。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (9)
1.一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂110~130份,硅烷偶联剂2~4份,膨润土17~22份,发泡剂0.5~2份,填充剂1~3份,抗氧剂0.4~0.8份,润滑剂1~2份。
2.根据权利要求1所述的一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂115份,硅烷偶联剂2份,膨润土18份,发泡剂0.9份,填充剂1.5份,抗氧剂0.5份,润滑剂1.2份。
3.根据权利要求1所述的一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂120份,硅烷偶联剂3份,膨润土20份,发泡剂1.5份,填充剂2.2份,抗氧剂0.6份,润滑剂1.6份。
4.根据权利要求1所述的一种高彭松性的异形尼龙,以重量份计,其原料组成包括:聚酰胺树脂125份,硅烷偶联剂4份,膨润土21份,发泡剂1.8份,填充剂2.7份,抗氧剂0.7份,润滑剂1.8份。
5.根据权利要求1所述的一种高彭松性的异形尼龙,其特征在于:所述聚酰胺树脂为聚酰胺-6或聚酰胺-66中的一种,所述膨润土为有机膨润土或钠基膨润土中的一种。
6.根据权利要求1所述的一种高彭松性的异形尼龙,其特征在于:所述发泡剂为石油醚、三氯氟甲烷或二氯二氟甲烷中的一种,所述填充剂为石墨烯或玻化微珠中的一种。
7.根据权利要求1所述的一种高彭松性的异形尼龙,其特征在于:所述抗氧剂为二烷基二苯胺、二氨基甲苯衍生物或1,8-二氨基萘衍生物中的一种,所述润滑剂为脂肪酸盐、硬脂酸酰胺或甲撑双硬脂酸酰胺中的一种。
8.根据权利要求1至7所述的一种高彭松性的异形尼龙的制备方法,其特征在于,包括如下步骤:
S1、原料准备:将膨润土中加入硅烷偶联剂进行改性,并加入质量分数75%的乙醇进行充分搅拌,搅拌均匀后放入烘干箱烘干;将聚酰胺树脂至于110℃烘干箱内热烘4小时去除水分;
S2、原料混合:将烘干后的聚酰胺树脂、经硅烷偶联剂改性后的膨润土、发泡剂、填充剂、抗氧剂和润滑剂加入反应釜内熔融并搅拌均匀,得到混合液;
S3、挤出成型:将S2中的混合液加入双螺旋挤出机内并通过异形喷孔喷丝板挤出,挤出后经热辊进行牵伸,并通过热压缩空气流进行膨化成型;
S4、成品处理:将挤出后的物料进行冷却、风干、造粒及包装。
9.根据权利要求8所述的一种高彭松性的异形尼龙的制备方法,其特征在于:双螺杆挤出机加工温度为250~270℃,螺杆转速为250~280rpm/min。
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