CN103819748A - 一种淀粉基可降解包装膜袋的制备方法 - Google Patents
一种淀粉基可降解包装膜袋的制备方法 Download PDFInfo
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
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Abstract
本发明公开了一种淀粉基可降解包装膜袋的制备方法,该包装膜袋以重量份计由下列组份组成:木薯淀粉80-86份,甘油13-15份,山梨醇7-9份,二甘醇3-5份,硬脂酸0.6-0.8份,单甘脂2.2-2.6份,钛酸酯偶联剂2-4份,海藻酸钠6-8份,膨润土12-14份,二甲基硅油4-6份,香草醛0.8-1.0份、丙酸钙0.4-0.8份,所述制备方法为:称量配料,然后进行混合均匀,加入高速搅拌机中在155-165℃进行预糊化处理,并高速搅拌20-30分钟,然后将其加入双螺杆挤出机,在170-176℃挤出成粒料;机头模具温度为135-145℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,自然干燥。
Description
技术领域
本发明涉及包装材料技术领域,尤其涉及一种淀粉基可降解包装膜袋的制备方法。
背景技术
目前人们日常使用的包装膜袋、垃圾袋、各种礼品袋等,绝大部分是石油基塑料,它们虽然价格低廉,但是均属于难以降解的产品。由于近年来石油基塑料产品的使用量逐渐增大,以至于形成白色污染,造成环境污染,影响了生态的平衡。
在工业化进程日趋加快的21世纪,石油资源更趋紧张,构建节约型社会,走可持续性发展道路已成为全球关注焦点和世界各国追求的健康经济发展目标。为适应新时代的要求,应对环境资源问题及金融危机的严重挑战。塑料包装材料的发展已经开始向低能耗、绿色环保、可循环利用的方向转变。因此,越来越多的降解塑料制品开始涌现。然而,目前的降解产品总是存在这样或者那样的不足。目前比较多的是采用石油基塑料聚烯烃材料为载体制备降解塑料,或者是采用聚乳酸类从天然物质中制备的高分子材料来提高降解塑料的生物降解性,但是,加工后材料的耐热性能不足,难以满足包装膜袋、垃圾袋、礼品袋等袋子的使用要求。植物淀粉塑料是塑料包装材料中新兴起的一种绿色环保再生资源型材料,植物淀粉塑料自问世以来得到了迅速发展,先后经历了淀粉填充型塑料、接枝共聚型淀粉塑料和热塑性塑料三个阶段。然而,这种淀粉塑料在终端产品加工和应用性能上仍不稳定。而聚乳酸(PLA)、聚己内酯(PCL)、聚丁二酸丁二醇酯(PBS)等热塑性塑料其价格比传统塑料高25~30%左右,无法大规模推广。
发明内容
本发明的目的在于提出一种淀粉基可降解包装膜袋的制备方法,该方法通过对添加剂、助剂的选择和调整,克服现有技术的缺陷,使得制备的淀粉基包装膜袋性能优异,并且降解性能好。
为达此目的,本发明采用以下技术方案:
一种淀粉基可降解包装膜袋的制备方法,该包装膜袋以重量份计由下列组份组成:木薯淀粉80-86份,甘油13-15份,山梨醇7-9份,二甘醇3-5份,硬脂酸0.6-0.8份,单甘脂2.2-2.6份,钛酸酯偶联剂2-4份,海藻酸钠6-8份,膨润土12-14份,二甲基硅油4-6份,香草醛0.8-1.0份、丙酸钙0.4-0.8份,所述制备方法为:按上述配比称量配料,然后将各组份进行混合均匀,加入高速搅拌机中在155-165℃进行预糊化处理,并高速搅拌20-30分钟,然后将其加入双螺杆挤出机,在170-176℃挤出成粒料;机头模具温度为135-145℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,并自然干燥即可。
本发明的有益效果为:
1)本发明通过对添加剂、助剂等添加剂的选择和搭配,使得制备的包装膜袋性能优异。本发明主要成分为可再生资源的木薯淀粉,使本发明具有价格低廉、可循环使用、降解能力强等优点。
2)本发明的包装膜袋具有如下性能:拉伸强度>18MPa,断裂伸长率≥320%,撕裂强度>120N。可降解物质的含量>65%,所以生物降解率>55%。
3)本产品的价格便宜,由于不需要使用聚乳酸,有利于降低可降解产品的成本,本发明具有很好的稳定性,且具有绿色环保、价格低廉等优点。
4)该制备方法通过对搅拌时间和挤压温度参数的控制和设计,使得设计性能充分发挥。
具体实施方式
实施例一
一种淀粉基可降解包装膜袋的制备方法,该包装膜袋以重量份计由下列组份组成:木薯淀粉80份,甘油15份,山梨醇7份,二甘醇5份,硬脂酸0.6份,单甘脂2.6份,钛酸酯偶联剂2份,海藻酸钠8份,膨润土12份,二甲基硅油6份,香草醛0.8份、丙酸钙0.8份,所述制备方法为:按上述配比称量配料,然后将各组份进行混合均匀,加入高速搅拌机中在155℃进行预糊化处理,并高速搅拌30分钟,然后将其加入双螺杆挤出机,在170℃挤出成粒料;机头模具温度为145℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,并自然干燥即可。
实施例二
一种淀粉基可降解包装膜袋的制备方法,该包装膜袋以重量份计由下列组份组成:木薯淀粉86份,甘油13份,山梨醇9份,二甘醇3份,硬脂酸0.8份,单甘脂2.2份,钛酸酯偶联剂4份,海藻酸钠6份,膨润土14份,二甲基硅油4份,香草醛1.0份、丙酸钙0.4份,所述制备方法为:按上述配比称量配料,然后将各组份进行混合均匀,加入高速搅拌机中在165℃进行预糊化处理,并高速搅拌20分钟,然后将其加入双螺杆挤出机,在176℃挤出成粒料;机头模具温度为135℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,并自然干燥即可。
实施例三
一种淀粉基可降解包装膜袋的制备方法,该包装膜袋以重量份计由下列组份组成:木薯淀粉83份,甘油14份,山梨醇8份,二甘醇4份,硬脂酸0.7份,单甘脂2.4份,钛酸酯偶联剂3份,海藻酸钠7份,膨润土13份,二甲基硅油5份,香草醛0.9份、丙酸钙0.6份,所述制备方法为:按上述配比称量配料,然后将各组份进行混合均匀,加入高速搅拌机中在160℃进行预糊化处理,并高速搅拌25分钟,然后将其加入双螺杆挤出机,在173℃挤出成粒料;机头模具温度为140℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,并自然干燥即可。
Claims (1)
1.一种淀粉基可降解包装膜袋的制备方法,其特征在于,该包装膜袋以重量份计由下列组份组成:木薯淀粉80-86份,甘油13-15份,山梨醇7-9份,二甘醇3-5份,硬脂酸0.6-0.8份,单甘脂2.2-2.6份,钛酸酯偶联剂2-4份,海藻酸钠6-8份,膨润土12-14份,二甲基硅油4-6份,香草醛0.8-1.0份、丙酸钙0.4-0.8份,所述制备方法为:按上述配比称量配料,然后将各组份进行混合均匀,加入高速搅拌机中在155-165℃进行预糊化处理,并高速搅拌20-30分钟,然后将其加入双螺杆挤出机,在170-176℃挤出成粒料;机头模具温度为135-145℃,然后将粒料吸塑二次成型为包装膜袋,然后冷却,并自然干燥即可。
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US10464847B2 (en) | 2012-10-23 | 2019-11-05 | United States Gypsum Company | Pregelatinized starch with mid-range viscosity, and product, slurry and methods related thereto |
US10399899B2 (en) | 2012-10-23 | 2019-09-03 | United States Gypsum Company | Pregelatinized starch with mid-range viscosity, and product, slurry and methods related thereto |
US9828441B2 (en) | 2012-10-23 | 2017-11-28 | United States Gypsum Company | Method of preparing pregelatinized, partially hydrolyzed starch and related methods and products |
KR102475527B1 (ko) * | 2021-12-08 | 2022-12-08 | 주식회사 더데이원랩 | 생분해성 플라스틱 조성물 및 이로부터 제조된 생분해성 플라스틱 필름 |
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