CN115216074B - 医用卫生疏水防尘功能填充母粒及其用途 - Google Patents

医用卫生疏水防尘功能填充母粒及其用途 Download PDF

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CN115216074B
CN115216074B CN202110402785.5A CN202110402785A CN115216074B CN 115216074 B CN115216074 B CN 115216074B CN 202110402785 A CN202110402785 A CN 202110402785A CN 115216074 B CN115216074 B CN 115216074B
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李佳怡
薛嘉晓
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Shanghai Huzheng Industrial Co ltd
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Abstract

本发明公开了一种医用卫生疏水防尘功能填充母粒，该填充母粒是由塑料基材和平均粒径≤20nm的纳米功能粉体混合，再添加助剂造粒而制成，纳米功能粉体的添加量为填充母粒的5‑20wt％，助剂添加量为填充母粒的0.2‑0.5wt％。纳米功能粉体为具备疏水防尘功能的改性硅氟纳米粉体，其通过动态和静态合成结合的方法制备，经过隔氧干燥后制得。由本发明医用卫生疏水防尘功能填充母粒制造的薄膜样品疏水角可达123°，疏油角可达91°，在医用卫生包装材料、医用器件材料等领域有重要应用价值。

Description

医用卫生疏水防尘功能填充母粒及其用途
技术领域
本发明涉及一种医用卫生疏水防尘功能填充母粒，此外，本发明还涉及该医用卫生疏水防尘功能填充母粒的用途。
背景技术
医用卫生材料的应用对于其表面洁净往往需要很高需求，低表面能的物质如氟、硅材料，水滴和灰尘无法在其表面粘附沾染，则能够很好地起到疏水防尘的效果。这一类材料已在许多市场得以广泛应用。将其应用于功能填充母粒，可用以制备具有疏水防尘功能的各种塑料材料。目前已有部分应用与探索。中国专利CN109989128A公开了一种尼龙纤维，通过改性尼龙母粒混合一般尼龙切片熔融纺丝，得到表面摩擦系数低、疏水性提高的纤维，其功能成分为聚二甲基硅氧烷和支链带有胺基的笼状半硅氧烷。中国专利CN109749101A公开了一种疏水性聚乙烯母粒，通过疏水母粒的应用，减少了大棚薄膜内壁的水滴凝结现象，提高了透光率，疏水剂主要为醋酸乙烯-乙烯共聚物及其助剂乳液。中国专利CN112126148A公开了一种超疏水材料，以可膨胀微球或其与全氟烷烃丙烯酸酯聚合物改性的二氧化硅的混合物与乙烯-醋酸乙烯共聚物混合得到复合母粒，最终得以实现材料的防污防水防雾等作用。
低表面能功能物质可在疏水自洁防尘等方面发挥重要作用，如何选取简单稳定的物质结构，通过简洁高效的复合方式及工艺流程，将其加以实际应用，是主要的研究发展方向。过于复杂的物质结构和工艺条件无法在市场竞争中保持长期的优势。二氧化硅作为常见的物质材料，在这方面具有较好的优势。设计二氧化硅与含氟硅烷的有机结合，并通过简单高效环保的工艺处理，可实现疏水防尘效果。这将推动其进一步市场化应用。这一材料在医用材料，如包装袋、护目镜、医疗器械、医用设备等方面，有着重要的实际应用价值。
发明内容
针对现有技术的上述不足，根据本发明的实施例，希望提供一种具有疏水防尘功能的医用卫生填充母粒，并提出其在医用包装材料、医用器件材料中的用途。
根据实施例，本发明提供的一种医用卫生疏水防尘功能填充母粒，其通过塑料基材和平均粒径≤20nm的纳米功能粉体混合，再添加助剂造粒而制成，纳米功能粉体的添加量为填充母粒的5-20wt％，助剂添加量为填充母粒的0.2-0.5wt％，其中：塑料基材选自聚乙烯、聚丙烯、聚氯乙烯、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯、聚苯乙烯和聚碳酸酯；
纳米功能粉体为改性硅氟纳米粉体；
助剂为分散剂和抗氧化剂，分散剂添加量为填充母粒的0.1-0.2wt％，抗氧化剂添加量为填充母粒的0.1-0.3wt％；分散剂选自羟乙基乙撑双硬脂酰胺、乙二醇聚氧乙烯醚和油酸酰胺；抗氧化剂选自四-(二丁基羟基氢化肉桂酸)季戊四醇酯、硫代二丙酸双十八醇酯、硫代二丙酸双十二醇酯、季戊四醇二亚磷酸双十八酯和三(2,4-二叔丁基苯基)亚磷酸酯。
根据一个实施例，本发明前述医用卫生疏水防尘功能填充母粒中，改性硅氟纳米粉体的制备过程，包括如下步骤：
(1)动态过程。将1质量份的二氧化硅粉体投入到含有20-50质量份的异丙醇的容器中，搅拌并超声3-6h后，向其中加入0.5-2质量份的聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨3-5天，得到粉体分散液。
(2)静态过程。向粉体分散液中加入0.5-1质量份的氟硅烷，0.5-1质量份的硅氧烷，盐酸调节pH为4-6，恒温30-40℃下搅拌并超声3-8h。
(3)分散液离心分离，乙醇反复清洗3次，在40-60℃下隔氧干燥24-48h，得到平均粒径≤20nm的改性硅氟纳米粉体。
其中，步骤(2)中，氟硅烷选自全氟辛基三乙氧基硅烷和十七氟癸基三乙氧基硅烷；硅氧烷选自甲基三甲氧基硅烷、甲基三乙氧基硅烷、乙烯基三甲氧基硅烷和γ-氨丙基三乙氧基硅烷。
亦即，本发明通过动态及静态过程处理、隔氧干燥方法，制得疏水防尘纳米功能粉体。
本发明前述医用卫生疏水防尘功能填充母粒的制备过程并无特别之处，将平均粒径≤20nm的改性硅氟纳米粉体与基材及助剂共混，造粒，制得医用卫生疏水防尘功能填充母粒，可在医用卫生包装材料、医用器件材料等领域广泛应用。
相比现有技术，随后的实施例和试验例将证明，本发明医用卫生疏水防尘功能填充母粒具有以下优点：原料简单易得，工艺流程简便，绿色环保；所得母粒适用性强，可广泛应用于多种塑料基材；具备很好的疏水防尘效果。
具体实施方式
下面结合具体实施例，进一步阐述本发明。这些实施例应理解为仅用于说明本发明而不用于限制本发明的保护范围。在阅读了本发明记载的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等效变化和修改同样落入本发明权利要求所限定的范围。
本发明以下实施例中所使用的原料如无特别标示均为市售产品。
实施例1
改性硅氟纳米粉体通过以下过程处理：
((1)将200g二氧化硅粉体投入到含有5L异丙醇中，搅拌并超声4h后，向其中加入100g聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨4天，得到粉体分散液。
(2)向粉体分散液中加入100g全氟辛基三乙氧基硅烷，120g甲基三乙氧基硅烷，盐酸调节pH为5，恒温40℃下搅拌并超声6h。
(3)分散液离心分离，乙醇反复清洗3次，在50℃下隔氧干燥24h，得到平均粒径≤20nm的改性硅氟纳米粉体。
将200g改性硅氟纳米粉体，800g聚对苯二甲醇乙二酯塑料切片,1.2g乙二醇聚氧乙烯醚，1g四-(二丁基羟基氢化肉桂酸)季戊四醇酯，0.8g三(2,4-二叔丁基苯基)亚磷酸酯。在充分搅拌的情况下，加入到塑料造粒机中，制得医用卫生填充母粒。
实施例2
改性硅氟纳米粉体通过以下过程处理：
((1)将200g二氧化硅粉体投入到含有5L异丙醇中，搅拌并超声4h后，向其中加入120g聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨5天，得到粉体分散液。
(2)向粉体分散液中加入100g十七氟癸基三乙氧基硅烷，100g乙烯基三甲氧基硅烷，盐酸调节pH为4，恒温40℃下搅拌并超声4h。
(3)分散液离心分离，乙醇反复清洗3次，在50℃下隔氧干燥24h，得到平均粒径≤20nm的改性硅氟纳米粉体。
将200g改性硅氟纳米粉体，800g聚丙烯塑料切片,1.2g油酸酰胺，1.4g季戊四醇二亚磷酸双十八酯,0.8g硫代二丙酸双十二醇酯。在充分搅拌的情况下，加入到塑料造粒机中，制得医用卫生填充母粒。
实施例3
改性硅氟纳米粉体通过以下过程处理：
((1)将200g二氧化硅粉体投入到含有5L异丙醇中，搅拌并超声5h后，向其中加入140g聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨4天，得到粉体分散液。
(2)向粉体分散液中加入120g全氟辛基三乙氧基硅烷，100g甲基三甲氧基硅烷，盐酸调节pH为4，恒温40℃下搅拌并超声4h。
(3)分散液离心分离，乙醇反复清洗3次，在50℃下隔氧干燥24h，得到平均粒径≤20nm的改性硅氟纳米粉体。
将200g改性硅氟纳米粉体，800g聚乙烯塑料切片,1.4g羟乙基乙撑双硬脂酰胺，1.3g硫代二丙酸双十八醇酯，1g三(2,4-二叔丁基苯基)亚磷酸酯。在充分搅拌的情况下，加入到塑料造粒机中，制得医用卫生填充母粒。
实施例4
改性硅氟纳米粉体通过以下过程处理：
((1)将200g二氧化硅粉体投入到含有5L异丙醇中，搅拌并超声5h后，向其中加入120g聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨5天，得到粉体分散液。
(2)向粉体分散液中加入100g全氟辛基三乙氧基硅烷，120gγ-氨丙基三乙氧基硅烷，盐酸调节pH为4，恒温40℃下搅拌并超声4h。
(3)分散液离心分离，乙醇反复清洗3次，在50℃下隔氧干燥24h，得到平均粒径≤20nm的改性硅氟纳米粉体。
将200g改性硅氟纳米粉体，800g聚对苯二甲酸丁二酯塑料切片,1.4g油酸酰胺，1.2g硫代二丙酸双十二醇酯，0.9g季戊四醇二亚磷酸双十八酯。在充分搅拌的情况下，加入到塑料造粒机中，制得医用卫生填充母粒。
实施例5
改性硅氟纳米粉体通过以下过程处理：
((1)将200g二氧化硅粉体投入到含有5L异丙醇中，搅拌并超声5h后，向其中加入100g聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨4天，得到粉体分散液。
(2)向粉体分散液中加入100g全氟辛基三乙氧基硅烷，120g甲基三乙氧基硅烷，盐酸调节pH为5，恒温40℃下搅拌并超声4h。
(3)分散液离心分离，乙醇反复清洗3次，在50℃下隔氧干燥24h，得到平均粒径≤20nm的改性硅氟纳米粉体。
将200g改性硅氟纳米粉体，800g聚碳酸酯塑料切片,1.2g羟乙基乙撑双硬脂酰胺，1.2g硫代二丙酸双十二醇酯，0.8g季戊四醇二亚磷酸双十八酯。在充分搅拌的情况下，加入到塑料造粒机中，制得医用卫生填充母粒。
试验例
以各实施例制备的医用卫生填充母粒，按5％的质量比与对应的基材母粒共混挤出，采用双向拉伸工艺制备得到50μm厚度的薄膜，测试其疏水疏油性质。测试结果如表1所示。可以看出，疏水角可为123°，疏油角可为91°；样品具备很低的表面能，这有利于其发挥疏水防尘的效果，保持表面干爽洁净。本发明所制备的医用卫生填充母粒具备很好的疏水防尘性能，制备时采用的工艺条件简便高效且绿色环保，适用性广，在医用材料，如包装袋、护目镜、医疗器械、医用设备等方面，有着重要的实际应用价值。
表1.各实施例所制样品性能测试结果

Claims (3)

1.一种医用卫生疏水防尘填充母粒，其特征在于，该填充母粒是由塑料基材和平均粒径≤20nm的纳米功能粉体混合，再添加助剂造粒而制成，纳米功能粉体的添加量为填充母粒的5-20wt％，助剂添加量为填充母粒的0.2-0.5wt％，其中，
塑料基材选自聚乙烯、聚丙烯、聚氯乙烯、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯、聚苯乙烯和聚碳酸酯；
纳米功能粉体为改性硅氟纳米粉体；
助剂为分散剂和抗氧化剂，分散剂添加量为填充母粒的0.1-0.2wt％，抗氧化剂添加量为填充母粒的0.1-0.3wt％；分散剂选自羟乙基乙撑双硬脂酰胺、乙二醇聚氧乙烯醚和油酸酰胺；抗氧化剂选自四-(二丁基羟基氢化肉桂酸)季戊四醇酯、硫代二丙酸双十八醇酯、硫代二丙酸双十二醇酯、季戊四醇二亚磷酸双十八酯和三(2,4-二叔丁基苯基)亚磷酸酯；
所述改性硅氟纳米粉体的制备过程包括如下步骤：
(1)动态过程：将1质量份的二氧化硅粉体投入到含有20-50质量份的异丙醇的容器中，搅拌并超声3-6h后，向其中加入0.5-2质量份的聚乙二醇，将混合液放入含有锆球的高速旋转的分散桶中滚动球磨3-5天，得到粉体分散液；
(2)静态过程：向粉体分散液中加入0.5-1质量份的氟硅烷，0.5-1质量份的硅氧烷，盐酸调节pH为4-6，恒温30-40℃下搅拌并超声3-8h；
(3)分散液离心分离，乙醇反复清洗3次，在40-60℃下隔氧干燥24-48h，得到平均粒径≤20nm的改性硅氟纳米粉体。
2.根据权利要求1所述的医用卫生疏水防尘填充母粒，其特征在于，步骤(2)中，氟硅烷选自全氟辛基三乙氧基硅烷和十七氟癸基三乙氧基硅烷；硅氧烷选自甲基三甲氧基硅烷、甲基三乙氧基硅烷、乙烯基三甲氧基硅烷和γ-氨丙基三乙氧基硅烷。
3.权利要求1或2所述的医用卫生疏水防尘填充母粒在医用包装材料、医用器件材料中的用途。
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