CN109134945A - 一种淀粉基泡沫材料及其制备方法 - Google Patents
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Abstract
一种淀粉基泡沫材料及其制备方法,与淀粉基泡沫材料挤出发泡制备工艺来讲,其模压发泡工艺简单,面层具有较高密度,内部孔隙多,并且可以制备形状较为复杂的淀粉基泡沫材料,除此之外,使用橡胶制备泡沫材料的工艺方法,借助于密炼机、开炼机设备实现对淀粉的塑化、组分的共混、材料的成型,研究得到了一种淀粉基泡沫材料的新型制备方法,扩宽了淀粉基泡沫材料的应用。
Description
技术领域
本发明属于材料制备技术领域,涉及一种物流包装盒内的缓冲物,具体涉及一种淀粉基泡沫材料及其制备方法。
背景技术
现有应用于包装盒中的缓冲物主要以石油为原料,通过挤出、吹塑工艺制成。工艺过程简单,原料聚苯乙烯(EPS),主要来源于石油资源,其价格低廉,生产工艺成熟,已工业化使用。
而目前的产品缺陷很多,比如EPS具有抗老化,防腐蚀等特点,所以在自然界不易腐烂,也不易降解,若深埋,会污染地下水源,破坏土壤结构;若焚烧处理,严重污染空气及大气环境;若回收利用,工作量大,成本高;其次,EPS来源于石油,属于不可再生资源,不可循环使用。
发明内容
为了克服上述现有技术的不足,本发明的目的是提供一种淀粉基泡沫材料及其制备方法,解决现有技术中石油资源的不可再生性,EPS泡沫材料的不可降解性、严重危害水源、大气等,造成了严重的环境问题。
为了实现上述目的,本发明采用的技术方案是:
一种淀粉基泡沫材料,按质量百分比包括以下组成:
糊化淀粉:10-30%,
聚乙烯醇PVA:20-50%,
润胀淀粉:90-70%,
塑化剂:35-50%,
蒙脱土:1-5%,
硬脂酸镁:1-3%,
瓜尔胶:1-3%,
偶氮二甲基酰胺:1-5%;
所述的塑化剂为乙二醇、丙三醇、甲酰胺等小分子多元醇或氨基化合物。
所述的淀粉总量为80-100g,糊化淀粉占淀粉总量10-30%,润胀淀粉占淀粉总量90-70%。
一种淀粉基泡沫材料的制备方法,包括以下步骤:
1)将20-50%聚乙烯醇PVA,按照聚乙烯醇水溶液的质量分数为10-30%进行配比,并搅拌均匀,放置于65℃-80℃下溶解得到透明胶黏液体,冷却24h备用,得到处理后聚乙烯醇PVA;
2)将10-30%淀粉,按照淀粉水溶液的质量分数为20-40%进行配比,并搅拌均匀,于70℃-90℃下进行糊化处理,得到透明状的液体胶黏剂,冷却24h备用,制备得到糊化淀粉;
3)另取剩余90-70%淀粉与一定量的塑化剂在高速搅拌机的作用下,搅拌2h,使其混合均匀,密封保存于塑封袋中润胀24h,制备得到润胀淀粉;
4)随后按配方比例中所述的瓜尔胶、硬脂酸镁、蒙脱土、偶氮二甲基酰胺的量称取备用,设置密炼机的温度为110℃-120℃,转速18 r/min,加入润胀淀粉90-70%于密炼室内处理20-30min,随后依次加入处理后聚乙烯醇PVA、糊化淀粉10-30%、备用的蒙脱土、瓜尔胶、硬脂酸镁、偶氮二甲基酰胺于密炼室内处理10min-20min后,取样;
5)将样品于开炼机冷处理,成型后置于自制模具中,与平板硫化机130℃下模压发泡400s,得到淀粉基泡沫材料。
本发明的有益效果是:与淀粉基泡沫材料挤出发泡制备工艺来讲,其模压发泡工艺简单,面层具有较高密度,内部孔隙多,并且可以制备形状较为复杂的淀粉基泡沫材料,除此之外,使用橡胶制备泡沫材料的工艺方法,借助于密炼机、开炼机设备实现对淀粉的塑化、组分的共混、材料的成型,研究得到了一种淀粉基泡沫材料的新型制备方法,扩宽了淀粉基泡沫材料的应用。
具体实施方式
以下结合实施例对本发明进一步叙述。
实施例1
按照发明内容中所述的方法步骤制备淀粉基泡沫材料。
一种淀粉基泡沫材料的制备方法,包括以下步骤:
1)将20-50%(占总淀粉的比例)聚乙烯醇PVA与一定量的蒸馏水搅拌均匀,放置于65℃-80℃下溶解得到透明胶黏液体,冷却24h备用,得到处理后聚乙烯醇PVA;
2)将10-30%(占总淀粉的比例)淀粉与一定量的蒸馏水搅拌均匀,于70℃-90℃下进行糊化处理,得到透明状的液体胶黏剂,冷却24h备用,制的糊化淀粉;
3)另取90-70%(占总淀粉的比例)淀粉与35-50%(占3)中淀粉的比例)塑化剂在高速搅拌机的作用下,搅拌2h,使其混合均匀,密封保存于塑封袋中润胀24h,制的润胀淀粉;
4)随后按配方比例中所述的1-3%瓜尔胶、1-3%硬脂酸镁、1-5%蒙脱土、1-5%偶氮二甲基酰胺的量称取备用,设置密炼机的温度为110℃-120℃,转速18 r/min,加入润胀淀粉于密炼室内处理20-30min,随后依次加入处理后聚乙烯醇PVA、淀粉、备用的蒙脱土、瓜尔胶、硬脂酸镁、偶氮二甲基酰胺于密炼室内处理10min-20min后,取样;
5)将样品于开炼机冷处理,成型后置于自制模具中,与平板硫化机130℃下模压发泡300s,得到淀粉基泡沫材料。
根据实施例1制备的产品进行检测,泡沫材料检测:密度变化范围0.3-0.6g/cm2、回弹率变化范围40-70%、压缩强度变化范围0.5-2MPa、吸水性变化范围30-60%、3个月降解率变化范围10-20%。
Claims (4)
1.一种淀粉基泡沫材料,其特征在于,按质量百分比包括以下组成:
糊化淀粉:10-30%,
聚乙烯醇PVA:20-50%,
润胀淀粉:90-70%,
塑化剂:35-50%,
蒙脱土:1-5%,
硬脂酸镁:1-3%,
瓜尔胶:1-3%,
偶氮二甲基酰胺:1-5%。
2.根据权利要求1所述的一种淀粉基泡沫材料,其特征在于,所述的塑化剂为乙二醇、丙三醇、甲酰胺等小分子多元醇或氨基化合物。
3.据权利要求1所述的一种淀粉基泡沫材料,其特征在于,所述的淀粉总量为80-100g,糊化淀粉占淀粉总量10-30%,润胀淀粉占淀粉总量90-70%。
4.一种淀粉基泡沫材料的制备方法,其特征在于,包括以下步骤:
1)将20-50%聚乙烯醇PVA,按照聚乙烯醇水溶液的质量分数为10-30%进行配比,并搅拌均匀,放置于65℃-80℃下溶解得到透明胶黏液体,冷却24h备用,得到处理后聚乙烯醇PVA;
2)将10-30%淀粉,按照淀粉水溶液的质量分数为20-40%进行配比,并搅拌均匀,于70℃-90℃下进行糊化处理,得到透明状的液体胶黏剂,冷却24h备用,制备得到糊化淀粉;
3)另取剩余90-70%淀粉与一定量的塑化剂在高速搅拌机的作用下,搅拌2h,使其混合均匀,密封保存于塑封袋中润胀24h,制备得到润胀淀粉;
4)随后按配方比例中所述的瓜尔胶、硬脂酸镁、蒙脱土、偶氮二甲基酰胺的量称取备用,设置密炼机的温度为110℃-120℃,转速18 r/min,加入润胀淀粉90-70%于密炼室内处理20-30min,随后依次加入处理后聚乙烯醇PVA、糊化淀粉10-30%、备用的蒙脱土、瓜尔胶、硬脂酸镁、偶氮二甲基酰胺于密炼室内处理10min-20min后,取样;
5)将样品于开炼机冷处理,成型后置于自制模具中,与平板硫化机130℃下模压发泡400s,得到淀粉基泡沫材料。
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Cited By (2)
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CN110804215A (zh) * | 2019-11-20 | 2020-02-18 | 湖南工业大学 | 一种淀粉发泡包装内玉及其制备方法 |
CN114031820A (zh) * | 2021-10-26 | 2022-02-11 | 南京五瑞生物降解新材料研究院有限公司 | 一种耐热型生物降解复合发泡材料及其制备方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110804215A (zh) * | 2019-11-20 | 2020-02-18 | 湖南工业大学 | 一种淀粉发泡包装内玉及其制备方法 |
CN114031820A (zh) * | 2021-10-26 | 2022-02-11 | 南京五瑞生物降解新材料研究院有限公司 | 一种耐热型生物降解复合发泡材料及其制备方法 |
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