CN107353612A - 一种可降解的复合薄膜的制备方法 - Google Patents

一种可降解的复合薄膜的制备方法 Download PDF

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CN107353612A
CN107353612A CN201710571652.4A CN201710571652A CN107353612A CN 107353612 A CN107353612 A CN 107353612A CN 201710571652 A CN201710571652 A CN 201710571652A CN 107353612 A CN107353612 A CN 107353612A
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Abstract

本发明涉及一种可降解的复合薄膜的制备方法,由以下重量份的原料组成:聚羟基丁酸酯38‑50份、环氧乙烷12‑18份、聚乙烯醇15‑25份、淀粉12‑20份、醋酸丁酸纤维素8‑15份、甲壳素5‑9份、壳聚糖6‑14份、钛酸酯偶联剂0.5‑2份、高碳醇脂肪酸酯复合物0.1‑1.5份。本发明的薄膜以聚羟基丁酸酯为主要原料,并配伍以环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖,具有良好的生物可降解性,安全环保,避免产生白色污染;同时又可以改善薄膜的强度和韧度。本发明的原料易得,价格低廉,制备工艺简单,具有良好的经济效益,对制备环境友好型塑料具有重要意义。

Description

一种可降解的复合薄膜的制备方法
技术领域
本发明涉及复合薄膜技术领域,具体涉及一种可降解的复合薄膜的制备方法。
背景技术
复合薄膜在日常生活中发挥着重要的作用,其可以用来制备食品包装袋、购物袋、地膜、垃圾袋等。然而随着塑料薄膜制品使用的增多,给自然环境带来了大量的污染,常规的塑料薄膜制品,例如聚丙烯、聚氯乙烯、聚乙烯等制成的塑料薄膜在自然环境下不易降解,放置多年后,仍然存在于自然环境中,这些不能降解的塑料薄膜增加了环境的污染。目前,解决这一环境问题的办法主要有焚烧法、填埋法和回收利用等。
随着人们环保意识的加强,如何缓解白色污染已是人们日益关注的话题,可降解塑料薄膜逐渐成为一种主流的发展趋势。为落实科学发展观,建立资源节约型和环境友好型社会,人们开始从源头上采取有力措施,研究开发易降解的塑料薄膜。
发明内容
本发明的目的是提供一种可降解的复合薄膜的制备方法,改善日益严重的白色污染。
为了实现本发明的目的,采用如下技术方案:
一种可降解的复合薄膜的制备方法,其特征在于,可降解的复合薄膜由以下重量份的原料组成:
制备方法具体包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为85-100℃,转速为58-65r/min,加热时间为15-20min;然后加入偶联剂,调节加热温度为105-110℃,转速为105-110r/min,加热时间为10-20min;最后加入消泡剂,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为65-75℃,干燥时间为30-50min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得复合薄膜。
优选地,偶联剂为钛酸酯偶联剂。
优选地,消泡剂为高碳醇脂肪酸酯复合物。
优选地,复合薄膜的厚度为30-42um。
优选地,偶联剂为钛酸酯偶联剂。
优选地,消泡剂为高碳醇脂肪酸酯复合物。
优选地,复合薄膜的厚度为30-42um。
本发明的有益效果:
本发明的薄膜以聚羟基丁酸酯为主要原料,并配伍以环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖,具有良好的生物可降解性,安全环保,避免产生白色污染;同时又可以改善薄膜的强度和韧度。本发明的原料易得,价格低廉,制备工艺简单,具有良好的经济效益,对制备环境友好型塑料具有重要意义。
具体实施方式
下面对本发明的实施例作详细说明,本实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施例。
实施例1
一种可降解的复合薄膜,由以下重量份的原料组成:聚羟基丁酸酯38份、环氧乙烷12份、聚乙烯醇15份、淀粉12份、醋酸丁酸纤维素8份、甲壳素5份、壳聚糖6份、钛酸酯偶联剂0.5份、高碳醇脂肪酸酯复合物0.1份。
一种可降解的复合薄膜的制备方法,包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为100℃,转速为58r/min,加热时间为15min;然后加入钛酸酯偶联剂,调节加热温度为105℃,转速为110r/min,加热时间为20min;最后加入脂肪酸酯复合物,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为75℃,干燥时间为30min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得厚度为30um的复合薄膜。
实施例2
一种可降解的复合薄膜,由以下重量份的原料组成:聚羟基丁酸酯50份、环氧乙烷18份、聚乙烯醇25份、淀粉20份、醋酸丁酸纤维素15份、甲壳素9份、壳聚糖14份、钛酸酯偶联剂2份、高碳醇脂肪酸酯复合物1.5份。
一种可降解的复合薄膜的制备方法,包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为85℃,转速为65r/min,加热时间为20min;然后加入钛酸酯偶联剂,调节加热温度为110℃,转速为105r/min,加热时间为10min;最后加入脂肪酸酯复合物,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为65℃,干燥时间为50min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得厚度为42um的复合薄膜。
实施例3
一种可降解的复合薄膜,由以下重量份的原料组成:聚羟基丁酸酯43份、环氧乙烷15份、聚乙烯醇17份、淀粉15份、醋酸丁酸纤维素10份、甲壳素6份、壳聚糖12份、钛酸酯偶联剂1份、高碳醇脂肪酸酯复合物0.8份。
一种可降解的复合薄膜的制备方法,包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为90℃,转速为60r/min,加热时间为18min;然后加入钛酸酯偶联剂,调节加热温度为105℃,转速为108r/min,加热时间为15min;最后加入脂肪酸酯复合物,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为70℃,干燥时间为40min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得厚度为35um的复合薄膜。
实施例4
一种可降解的复合薄膜,由以下重量份的原料组成:聚羟基丁酸酯48份、环氧乙烷17份、聚乙烯醇20份、淀粉18份、醋酸丁酸纤维素12份、甲壳素8份、壳聚糖8份、钛酸酯偶联剂0.8份、高碳醇脂肪酸酯复合物0.5份。
一种可降解的复合薄膜的制备方法,包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为95℃,转速为60r/min,加热时间为18min;然后加入钛酸酯偶联剂,调节加热温度为105℃,转速为110r/min,加热时间为15min;最后加入脂肪酸酯复合物,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为70℃,干燥时间为45min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得厚度为38um的复合薄膜。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (4)

1.一种可降解的复合薄膜的制备方法,其特征在于,可降解的复合薄膜由以下重量份的原料组成:
制备方法具体包括以下步骤:
(1)分别称取相应重量份的各原料;
(2)将聚羟基丁酸酯、环氧乙烷、聚乙烯醇、淀粉、醋酸丁酸纤维素、甲壳素、壳聚糖加入到混合机内,加热温度为85-100℃,转速为58-65r/min,加热时间为15-20min;然后加入偶联剂,调节加热温度为105-110℃,转速为105-110r/min,加热时间为10-20min;最后加入消泡剂,继续搅拌5min,混合均匀得混合料;
(3)将混合料熔融造粒,然后进行干燥处理,干燥温度为65-75℃,干燥时间为30-50min;
(4)将步骤(3)的干燥粒加入到挤出机中,挤出吹塑成型即得复合薄膜。
2.根据权利要求1所述的可降解的复合薄膜的制备方法,其特征在于,偶联剂为钛酸酯偶联剂。
3.根据权利要求1所述的可降解的复合薄膜的制备方法,其特征在于,消泡剂为高碳醇脂肪酸酯复合物。
4.根据权利要求1所述的可降解的复合薄膜的制备方法,其特征在于,复合薄膜的厚度为30-42um。
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CN113072787A (zh) * 2021-04-06 2021-07-06 郑州润尚环保科技有限公司 一种pva生物可降解薄膜
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CN106496986A (zh) * 2016-11-24 2017-03-15 安徽省天乐塑业有限公司 一种可降解的复合薄膜及其制备方法

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CN113072787A (zh) * 2021-04-06 2021-07-06 郑州润尚环保科技有限公司 一种pva生物可降解薄膜
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