CN107189205A - 一种抗老化的聚丙烯包装材料的制备方法 - Google Patents

一种抗老化的聚丙烯包装材料的制备方法 Download PDF

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CN107189205A
CN107189205A CN201710470338.7A CN201710470338A CN107189205A CN 107189205 A CN107189205 A CN 107189205A CN 201710470338 A CN201710470338 A CN 201710470338A CN 107189205 A CN107189205 A CN 107189205A
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顾建芳
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Suzhou Austrian Packaging Technology Co Ltd
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Abstract

本发明公开了一种抗老化的聚丙烯包装材料的制备方法，将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至60‑71℃，搅拌速度为350‑450转/min，搅拌18‑25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌得到混合料；然后将混合料静置8‑15h后加入到双螺杆挤出机熔融挤出，冷却后切粒，得到粒料；再与剩余的原料加入到50‑60℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过130‑160℃熔融塑化、150‑180℃口模成型、吹胀、电晕、收卷，即可。本发明通过纳米材料改性使得本发明制备包装材料具有良好的抗老化性能，而且添加合适助剂进一步提高了薄膜本身的力学性能，且制备方法简单，具有良好的应用价值。

Description

一种抗老化的聚丙烯包装材料的制备方法
技术领域
本发明属于高分子材料领域，涉及一种抗老化的聚丙烯包装材料的制备方法。
技术背景
塑料软包装材料，一般是指由塑料（或塑料复合材料）组成的，质地柔软的，可以通过制袋、包裹等方式对商品进行包装的材料。软包装料中应用最多的是各种塑料薄膜及其膜状复合材料、织物类包装材料等。软包装材料的广泛应用为从事软包装工业的企事业单位提供了极其广阔的活动空间，在为广大用户提供优良服务的同时也取得了高于其他塑料成型加工行业的良好的效益。得到了迅速发展，前景十分光明。由于软包装材料的品种繁多，性能跨度很大，从性能相似、相近到完全不同的产品均有工业化生产。软包装材料均为膜状物，厚度相当小，一般仅0.04um左右，每平方米的质量仅0.025kg左右，因此采用软包装材料商品较其他包装材料可以明显地节约资源耗费。塑料软包装材料不仅原料耗用量小，而且具有加工方便、能量耗费低、成型效率高等综合优势，因而具有价格低廉的优点。由于软包装材料具有众多的优点，其中特别突出的是可以通过各种材料的合理组合设计制造出所期望的、比较理想的特定的包装材料，因而具有极佳的性价比，表现出强大的市场竞争力得到了人们的广泛关注与用户的青睐，发展很快，其应用涵盖了食品、医药、轻工、纺织、日用小商品等几乎工农业生产的所有领域，已成为塑料包装材料中最重要的品种之一。
在软包装塑料中不仅可以采用不同塑料，采用不同配方，通过不同工艺制造性能不同的各种单层薄膜，而且还可以通过多种材料间的不同组合得到成百上千的各不相同的品种，满足各种不同的需要。利用不同软包装材料性能各异的特点，通过品种的合理选用可能满足众多商品包装的需求。聚丙烯（PP）是一种热塑性高分子材料，是五大通用塑料之一，具有密度小、刚性好、强度高、耐挠曲以及良好的耐热性、电绝缘性和耐化学药品性，且原料来源丰富、价格低廉、易于加工成型，已广泛应用于包装等领域。随着改性技术的发展，聚丙烯已经可以在很多场合替代工程塑料，是当今世界产量最大、应用最广的塑料品种之一。但是聚丙烯材料有一关键性弱点，即由于其分子链上存在着大量不稳定的叔碳原子，在有氧的情况下，只需要很小的能量就可以将叔碳原子上的氢脱除成为叔碳自由基。叔碳自由基非常活跃，可造成分子链的各种反应的发生，包括链增长、链降解，从而使PP原有性能丧失，致使PP材料老化。聚合物在加工、贮存和使用过程中常受到光、热、氧、水汽、微生物等外界环境因素的作用，这些因素均可以加速聚合物的老化。为此，我们从产品的配方和工艺着手，开发新的高性能材料，研发一种抗老化的聚丙烯包装材料的新工艺是整个行业的当务之急。
发明内容
本发明的目的在于针对现有技术的不足，提供一种抗老化的聚丙烯包装材料的制备方法。
本发明的目的是通过以下技术方案实现的： 一种抗老化的聚丙烯包装材料的制备方法，包括以下步骤：先按重量称取聚丙烯78-90份、氨基树脂10-15份、氯磺化聚乙烯10-14份、明胶10-15份、气相白炭黑2-3份、甲基丙烯酸甲酯10-15份、乙酰乙酸烯丙酯1-5份、椰子油酸单乙醇酰胺4-8份、醋酸乙酯30-50份、纳米硼纤维6-8份、丙烯酸11-16份、纳米氮化钛5-9份、碳酸氢铵2-5份、聚乙烯醇5-12份；将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至60-71℃，搅拌速度为350-450转/min，搅拌18-25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至90-105℃，搅拌速度为500-600转/min，搅拌10-15min，得到混合料； 然后将混合料静置8-15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为180-200℃，挤出压力为19-22MPa，冷却后切粒，得到粒料；再与剩余的原料加入到50-60℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过130-160℃熔融塑化、150-180℃口模成型、吹胀、电晕、收卷，即可。
按重量称取聚丙烯85份、氨基树脂13份、氯磺化聚乙烯12份、明胶13份、气相白炭黑3份、甲基丙烯酸甲酯13份、乙酰乙酸烯丙酯2份、椰子油酸单乙醇酰胺6份、醋酸乙酯40份、纳米硼纤维7份、丙烯酸14份、纳米氮化钛7份、碳酸氢铵4份、聚乙烯醇8份。
将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至65℃，搅拌速度为400转/min，搅拌18-25min。
然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至100℃，搅拌速度为550转/min，搅拌10-15min，得到混合料。
将混合料静置8-15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为190℃，挤出压力为20MPa，冷却后切粒，得到粒料；再与剩余的原料加入到55℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过150℃熔融塑化、170℃口模成型、吹胀、电晕、收卷，即可。
本发明具有以下有益效果：本发明通过纳米材料改性使得本发明制备包装材料具有良好的抗老化性能，而且添加合适助剂进一步提高了薄膜本身的力学性能，且制备方法简单，具有良好的应用价值。
具体实施方式
实施例1
一种抗老化的聚丙烯包装材料的制备方法，包括以下步骤：先按重量称取聚丙烯78份、氨基树脂10份、氯磺化聚乙烯10份、明胶10份、气相白炭黑2份、甲基丙烯酸甲酯10份、乙酰乙酸烯丙酯1份、椰子油酸单乙醇酰胺4份、醋酸乙酯30份、纳米硼纤维6份、丙烯酸11份、纳米氮化钛5份、碳酸氢铵2份、聚乙烯醇5份；将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至60℃，搅拌速度为350转/min，搅拌18-25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至90℃，搅拌速度为500转/min，搅拌10-15min，得到混合料； 然后将混合料静置8h后加入到双螺杆挤出机熔融挤出，维持挤出温度为180℃，挤出压力为19MPa，冷却后切粒，得到粒料；再与剩余的原料加入到50℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过130℃熔融塑化、150℃口模成型、吹胀、电晕、收卷，即可。
实施例2
一种抗老化的聚丙烯包装材料的制备方法，包括以下步骤：先按重量称取聚丙烯90份、氨基树脂15份、氯磺化聚乙烯14份、明胶15份、气相白炭黑3份、甲基丙烯酸甲酯15份、乙酰乙酸烯丙酯5份、椰子油酸单乙醇酰胺8份、醋酸乙酯50份、纳米硼纤维8份、丙烯酸16份、纳米氮化钛9份、碳酸氢铵5份、聚乙烯醇12份；将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至71℃，搅拌速度为450转/min，搅拌18-25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至105℃，搅拌速度为600转/min，搅拌10-15min，得到混合料； 然后将混合料静置15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为200℃，挤出压力为22MPa，冷却后切粒，得到粒料；再与剩余的原料加入到60℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过160℃熔融塑化、180℃口模成型、吹胀、电晕、收卷，即可。
实施例3
一种抗老化的聚丙烯包装材料的制备方法，包括以下步骤：先按重量称取聚丙烯85份、氨基树脂13份、氯磺化聚乙烯12份、明胶13份、气相白炭黑3份、甲基丙烯酸甲酯13份、乙酰乙酸烯丙酯2份、椰子油酸单乙醇酰胺6份、醋酸乙酯40份、纳米硼纤维7份、丙烯酸14份、纳米氮化钛7份、碳酸氢铵4份、聚乙烯醇8份；将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至65℃，搅拌速度为400转/min，搅拌18-25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至100℃，搅拌速度为550转/min，搅拌10-15min，得到混合料； 然后将混合料静置8-15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为190℃，挤出压力为20MPa，冷却后切粒，得到粒料；再与剩余的原料加入到55℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过150℃熔融塑化、170℃口模成型、吹胀、电晕、收卷，即可。

Claims (5)

1.一种抗老化的聚丙烯包装材料的制备方法，其特征在于所述方法包括以下步骤：先按重量称取聚丙烯78-90份、氨基树脂10-15份、氯磺化聚乙烯10-14份、明胶10-15份、气相白炭黑2-3份、甲基丙烯酸甲酯10-15份、乙酰乙酸烯丙酯1-5份、椰子油酸单乙醇酰胺4-8份、醋酸乙酯30-50份、纳米硼纤维6-8份、丙烯酸11-16份、纳米氮化钛5-9份、碳酸氢铵2-5份、聚乙烯醇5-12份；将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至60-71℃，搅拌速度为350-450转/min，搅拌18-25min，然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至90-105℃，搅拌速度为500-600转/min，搅拌10-15min，得到混合料； 然后将混合料静置8-15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为180-200℃，挤出压力为19-22MPa，冷却后切粒，得到粒料；再与剩余的原料加入到50-60℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过130-160℃熔融塑化、150-180℃口模成型、吹胀、电晕、收卷，即可。
2.根据权利要求1所述的一种抗老化的聚丙烯包装材料的制备方法，其特征在于：按重量称取聚丙烯85份、氨基树脂13份、氯磺化聚乙烯12份、明胶13份、气相白炭黑3份、甲基丙烯酸甲酯13份、乙酰乙酸烯丙酯2份、椰子油酸单乙醇酰胺6份、醋酸乙酯40份、纳米硼纤维7份、丙烯酸14份、纳米氮化钛7份、碳酸氢铵4份、聚乙烯醇8份。
3.根据权利要求1所述的一种抗老化的聚丙烯包装材料的制备方法，其特征在于：将聚丙烯、纳米氮化钛、椰子油酸单乙醇酰胺、氯磺化聚乙烯投入高搅机中搅拌升温至65℃，搅拌速度为400转/min，搅拌18-25min。
4.根据权利要求1所述的一种抗老化的聚丙烯包装材料的制备方法，其特征在于：然后加入气相白炭黑、醋酸乙酯、甲基丙烯酸甲酯和氨基树脂，搅拌升温至100℃，搅拌速度为550转/min，搅拌10-15min，得到混合料。
5.根据权利要求1所述的一种抗老化的聚丙烯包装材料的制备方法，其特征在于： 将混合料静置8-15h后加入到双螺杆挤出机熔融挤出，维持挤出温度为190℃，挤出压力为20MPa，冷却后切粒，得到粒料；再与剩余的原料加入到55℃高速搅拌机中混合10分钟，然后在吹膜设备上依次经过150℃熔融塑化、170℃口模成型、吹胀、电晕、收卷，即可。
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