CN115322404A - 一种抗光老化聚乙烯料母粒及其制备方法 - Google Patents
一种抗光老化聚乙烯料母粒及其制备方法 Download PDFInfo
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Abstract
本发明提出一种抗光老化聚乙烯料母粒及其制备方法,该制备方法包括按以下质量份分别称取原料组分:抗氧剂50‑60份,辅助抗氧剂10‑15份,润滑剂15‑20份,光稳定剂10‑15份,光屏蔽剂2‑5份;使用高速混合机将抗氧剂、辅助抗氧剂、润滑剂、光稳定剂、光屏蔽剂混配均匀形成白色复配粉料,将复配粉料压制成母粒。将制备的母粒与聚乙烯粉料混合均匀,用双螺杆挤出机挤出造粒,得到具有抗光老化性能的聚乙烯料。本发明制备的母粒能够解决聚乙烯材料老化问题,尤其是在外界使用中的光老化。该母粒与聚乙烯纯料通过共混、螺杆挤出造粒等步骤使其均匀混散到聚乙烯料中,起到很好的改性效果,能够有效改善材料的老化情况。
Description
技术领域
本发明属于高分子材料生产技术领域,具体涉及一种抗光老化聚乙烯料母粒及其制备方法。
背景技术
聚乙烯是通用合成塑料中应用最广泛的品种之一,主要用来制造薄膜、包装材料、各种中空管材、电线电缆、日用品等,由于聚乙烯产品在制备、加工、使用和贮存过程中会受到光照、氧等环境的影响,会发生老化、变色、龟裂等现象,更严重者会丧失力学性能,因此对聚乙烯进行抗老化改性至关重要。
根据材料不同的功能性应用,母粒分为抗静电母粒、阻燃母粒、抗老化母粒等。聚乙烯助剂往往是多种单剂复配,然而不同密度的单剂在混配时会出现分布不均的情况,会使改性效果产生差异化,影响材料的整体性能。为此,需要开发一种聚乙烯抗老化母粒,以有效解决各单剂混配不均的情况,有效改善助剂对聚乙烯的改性作用。
发明内容
(一)要解决的技术问题
本发明提出一种抗光老化聚乙烯料母粒及其制备方法,以解决如何提高聚乙烯材料在室外使用过程中的抗光老化性能,延长产品使用寿命,增加产品使用价值的技术问题。
(二)技术方案
为了解决上述技术问题,本发明提出一种抗光老化聚乙烯料母粒制备方法,该制备方法包括如下步骤:
S1.按以下质量份分别称取原料组分:抗氧剂50-60份,辅助抗氧剂10-15份,润滑剂15-20份,光稳定剂10-15份,光屏蔽剂2-5份;
S2.使用高速混合机将抗氧剂、辅助抗氧剂、润滑剂、光稳定剂、光屏蔽剂混配均匀形成白色复配粉料,将复配粉料压制成母粒。
进一步地,抗氧剂为抗氧剂1010、抗氧剂1024、抗氧剂565中的一种或多种混合物。
进一步地,辅助抗氧剂为抗氧剂168、抗氧剂626中的一种或一种多种混合物。
进一步地,润滑剂为硬脂酸锌、硬脂酸钙、合成水滑石中的一种或多种混合物。
进一步地,光稳定剂为光稳定剂944、622、788中的一种或多种混合物。
进一步地,光屏蔽剂为碳黑、氧化钛、氧化锌中的一种或多种混合物。
进一步地,步骤S2中,使用高速混合机的混合时间为1-3min。
此外,本发明还提出一种抗光老化聚乙烯料母粒,该聚乙烯料母粒采用上述方法制备得到。
此外,本发明还提出一种抗光老化聚乙烯料制备方法,该聚乙烯料制备方法包括:使用高速混合机将上述母粒与聚乙烯粉料混合均匀;使用双螺杆挤出机挤出造粒,得到具有抗光老化性能的聚乙烯料。
进一步地,混合母粒与聚乙烯粉料时,高速混合机的混合时间为1-4min;双螺杆挤出机的温度控制为180-230℃。
(三)有益效果
本发明提出一种抗光老化聚乙烯料母粒及其制备方法,该制备方法包括按以下质量份分别称取原料组分:抗氧剂50-60份,辅助抗氧剂10-15份,润滑剂15-20份,光稳定剂10-15份,光屏蔽剂2-5份;使用高速混合机将抗氧剂、辅助抗氧剂、润滑剂、光稳定剂、光屏蔽剂混配均匀形成白色复配粉料,将复配粉料压制成母粒。将制备的母粒与聚乙烯粉料混合均匀,用双螺杆挤出机挤出造粒,得到具有抗光老化性能的聚乙烯料。
本发明制备的母粒能够解决聚乙烯材料老化问题,尤其是在外界使用中的光老化。该母粒与聚乙烯纯料通过共混、螺杆挤出造粒等步骤使其均匀混散到聚乙烯料中,起到很好的改性效果,能够有效改善材料的老化情况。此外,将复配助剂加工成母粒可有效改善粉料下料不均、堵仓的情况,不仅能够提高材料的综合性能,还提高材料的加工性能。使用本发明制备的抗光老化母粒改性的聚乙烯料,其产品性能指标满足如下要求:抗光老化聚乙烯料加工性能提高,多次螺杆挤出,熔体质量流动速率增加不超过6%,且黄变情况增加不明显;自然光老化情况下,光照半年,断裂伸长率下降不超过30%。
具体实施方式
为使本发明的目的、内容和优点更加清楚,下面结合实施例,对本发明的具体实施方式作进一步详细描述。
实施例1
按质量份称取55份抗氧剂1010、10份辅助抗氧剂626、15份润滑剂硬脂酸锌、15份光稳定剂944、5份光屏蔽剂氧化钛;高速混料机混合1min使各单剂混合均匀,将复配粉料压制成母粒。将纯聚乙烯粉料与母粒在高速搅拌机中混合2min,得到混合均匀的混配料,再将混配料由双螺杆挤出机在180-230℃挤出造粒,得到抗光老化聚乙烯料。
实施例2
按质量份称取60份抗氧剂1024、10份辅助抗氧剂168、16份润滑剂硬脂酸钙、12份光稳定剂788、2份光屏蔽剂氧化钛;高速混料机混合1min使各单剂混合均匀,将复配粉料压制成母粒。将纯聚乙烯粉料与母粒在高速搅拌机中混合2min,得到混合均匀的混配料,再将混配料由双螺杆挤出机在180-230℃挤出造粒,得到抗光老化聚乙烯料。
实施例3
按质量份称取50份抗氧剂1010、15份辅助抗氧剂626、20份润滑剂合成水滑石、12份光稳定剂622、3份光屏蔽剂氧化锌;高速混料机混合1min使各单剂混合均匀,将复配粉料压制成母粒。将纯聚乙烯粉料与母粒在高速搅拌机中混合2min,得到混合均匀的混配料,再将混配料由双螺杆挤出机在180-230℃挤出造粒,得到抗光老化聚乙烯料。
实施例4
按质量份称取50份抗氧剂1010、10份辅助抗氧剂168、20份润滑剂硬脂酸钙、15份光稳定剂944、5份光屏蔽剂氧化锌;高速混料机混合1min使各单剂混合均匀,将复配粉料压制成母粒。将纯聚乙烯粉料与母粒在高速搅拌机中混合2min,得到混合均匀的混配料,再将混配料由双螺杆挤出机在180-230℃挤出造粒,得到抗光老化聚乙烯料。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变形,这些改进和变形也应视为本发明的保护范围。
Claims (10)
1.一种抗光老化聚乙烯料母粒制备方法,其特征在于,所述制备方法包括如下步骤:
S1.按以下质量份分别称取原料组分:抗氧剂50-60份,辅助抗氧剂10-15份,润滑剂15-20份,光稳定剂10-15份,光屏蔽剂2-5份;
S2.使用高速混合机将抗氧剂、辅助抗氧剂、润滑剂、光稳定剂、光屏蔽剂混配均匀形成白色复配粉料,将复配粉料压制成母粒。
2.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,所述抗氧剂为抗氧剂1010、抗氧剂1024、抗氧剂565中的一种或多种混合物。
3.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,所述辅助抗氧剂为抗氧剂168、抗氧剂626中的一种或一种多种混合物。
4.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,所述润滑剂为硬脂酸锌、硬脂酸钙、合成水滑石中的一种或多种混合物。
5.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,所述光稳定剂为光稳定剂944、622、788中的一种或多种混合物。
6.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,所述光屏蔽剂为碳黑、氧化钛、氧化锌中的一种或多种混合物。
7.如权利要求1所述的聚乙烯料母粒制备方法,其特征在于,步骤S2中,使用高速混合机的混合时间为1-3min。
8.一种抗光老化聚乙烯料母粒,其特征在于,所述聚乙烯料母粒采用上述任一项权利要求所述的方法制备得到。
9.一种抗光老化聚乙烯料制备方法,其特征在于,所述聚乙烯料制备方法包括:使用高速混合机将权利要求8所述的母粒与聚乙烯粉料混合均匀;使用双螺杆挤出机挤出造粒,得到具有抗光老化性能的聚乙烯料。
10.如权利要求9所述的聚乙烯料母粒制备方法,其特征在于,混合母粒与聚乙烯粉料时,高速混合机的混合时间为1-4min;双螺杆挤出机的温度控制为180-230℃。
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