CN107815008A - 一种农业种植可降解地膜及其制备方法 - Google Patents

一种农业种植可降解地膜及其制备方法 Download PDF

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CN107815008A
CN107815008A CN201711190906.4A CN201711190906A CN107815008A CN 107815008 A CN107815008 A CN 107815008A CN 201711190906 A CN201711190906 A CN 201711190906A CN 107815008 A CN107815008 A CN 107815008A
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施享
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Abstract

本发明涉及一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯30‑45份、降解母粒10‑15份、聚乙烯醇 10‑15份、酚醛树脂8‑13份、淀粉4‑6份、邻苯二甲酸二辛酯4‑5份、二茂铁10‑15份、聚碳酸酯2‑3份、钛白粉2‑3份、山梨酸3‑4份、乙醇20‑25份、去离子水8‑12份。本发明材料易得,透明度高,具有一定的透气性和防水性,提高地温,保持土壤湿度,促进种子发芽和幼苗快速增长的作用,抑制杂草生长,韧度强,使用时间长,可降解,减少环境污染。

Description

一种农业种植可降解地膜及其制备方法
技术领域
本发明涉及地膜领域,具体涉及一种农业种植可降解地膜及其制备方法。
背景技术
农用地膜是继种子、化肥、农药之后的农业重要生产资料,它的应用为农业生产带来了一场革命,对农业增效、农民增收做出了重要贡献。农用地膜是农业生产中用于保护植物水分流失、提高水分利用率、改善农作物生长环境和产量等措施的一种制品。在经济发达国家,农用塑料薄膜的用量占所有农用高聚物制品总量的 50%以上。常用的农用高聚物主要有聚氯乙烯、聚乙烯、聚丙烯和不饱和聚酯树脂等,但是这些材料在土壤中不能被侵蚀分解,甚至在田间数十年都不会降解,连续使用逐年积累于土壤中导致土壤板结,在大量使用农用地膜后会产生白色污染和农作物产量下降等严重问题。
发明内容
本发明的目的是为了克服以上的不足而提供一种农业种植可降解地膜及其制备方法。
本发明的技术方案包括:一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯30-45份、降解母粒10-15份、聚乙烯醇 10-15份、酚醛树脂8-13份、淀粉4-6份、邻苯二甲酸二辛酯4-5份、二茂铁10-15份、聚碳酸酯2-3份、钛白粉2-3份、山梨酸3-4份、乙醇20-25份、去离子水8-12份。
本发明的进一步改进在于:其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2000-2200HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌5-8min备用,得混合物B,将挤出机预热,一组温度150±5℃,二组温度160±5℃,三组温度170±5℃,三通弯头温度160±5℃,模头温度150±5℃,温度到达指定数据后,恒温20-25min;
C、将混合物A分两次加入混合物B中,搅拌速率为520-540r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
本发明的有益效果:本发明材料易得,透明度高,具有一定的透气性和防水性,提高地温,保持土壤湿度,促进种子发芽和幼苗快速增长的作用,抑制杂草生长,韧度强,使用时间长,可降解,减少环境污染。
具体实施方式:
为了加深对本发明的理解,下面将结合实施例对本发明作进一步详述,该实施例仅用于解释本发明,并不构成对本发明保护范围的限定。
实施例1
一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯35份、降解母粒11份、聚乙烯醇 12份、酚醛树脂10份、淀粉5份、邻苯二甲酸二辛酯4份、二茂铁13份、聚碳酸酯2份、钛白粉3份、山梨酸3份、乙醇22份、去离子水10份。
其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2100HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌7min备用,得混合物B,将挤出机预热,一组温度155℃,二组温度160℃,三组温度175℃,三通弯头温度155℃,模头温度155℃,温度到达指定数据后,恒温20min;
C、将混合物A分两次加入混合物B中,搅拌速率为530r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
实施例2
一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯30份、降解母粒15份、聚乙烯醇 10份、酚醛树脂13份、淀粉4份、邻苯二甲酸二辛酯5份、二茂铁10份、聚碳酸酯3份、钛白粉2份、山梨酸4份、乙醇20份、去离子水12份。
其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2000HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌8min备用,得混合物B,将挤出机预热,一组温度155℃,二组温度165℃,三组温度165℃,三通弯头温度165℃,模头温度145℃,温度到达指定数据后,恒温25min;
C、将混合物A分两次加入混合物B中,搅拌速率为520r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
实施例3
一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯40份、降解母粒14份、聚乙烯醇 13份、酚醛树脂11份、淀粉5份、邻苯二甲酸二辛酯5份、二茂铁14份、聚碳酸酯3份、钛白粉2份、山梨酸3份、乙醇23份、去离子水10份。
其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2100HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌7min备用,得混合物B,将挤出机预热,一组温度145℃,二组温度160℃,三组温度170℃,三通弯头温度160℃,模头温度150℃,温度到达指定数据后,恒温20min;
C、将混合物A分两次加入混合物B中,搅拌速率为530r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
实施例4
一种农业种植可降解地膜及其制备方法,原料组成成分按重量份数由以下比例组成:低密度聚乙烯45份、降解母粒10份、聚乙烯醇 15份、酚醛树脂8份、淀粉6份、邻苯二甲酸二辛酯4份、二茂铁15份、聚碳酸酯2份、钛白粉3份、山梨酸3份、乙醇25份、去离子水8份。
其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2200HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌5min备用,得混合物B,将挤出机预热,一组温度155℃,二组温度155℃,三组温度175℃,三通弯头温度155℃,模头温度155℃,温度到达指定数据后,恒温20min;
C、将混合物A分两次加入混合物B中,搅拌速率为540r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
以上实施例中,实施例2为最佳实施例,抗氧化效果能力强,可降解效果强。
以上所述仅为说明本发明的实施方式,并不用于限制本发明,对于本领域的技术人员来说,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (2)

1.一种农业种植可降解地膜及其制备方法,其特征在于:原料组成成分按重量份数由以下比例组成:低密度聚乙烯30-45份、降解母粒10-15份、聚乙烯醇 10-15份、酚醛树脂8-13份、淀粉4-6份、邻苯二甲酸二辛酯4-5份、二茂铁10-15份、聚碳酸酯2-3份、钛白粉2-3份、山梨酸3-4份、乙醇20-25份、去离子水8-12份。
2.根据权利要求1所述的一种农业种植可降解地膜及其制备方法,其特征在于:其制备方法如下:
A、将邻苯二甲酸二辛酯、聚乙烯醇和酚醛树脂加入乙醇中进行超声波混合溶解,频率设为2000-2200HZ,混合物A;
B、将低密度聚乙烯、降解母粒、二茂铁加入搅拌机搅拌5-8min备用,得混合物B,将挤出机预热,一组温度150±5℃,二组温度160±5℃,三组温度170±5℃,三通弯头温度160±5℃,模头温度150±5℃,温度到达指定数据后,恒温20-25min;
C、将混合物A分两次加入混合物B中,搅拌速率为520-540r/min,搅拌均匀后加入聚碳酸酯、钛白粉和山梨酸继续逆行搅拌,将淀粉与去离子水按照1:2的比例稀释后的混合物加入其中,搅拌均匀后加入料斗中,缓缓启动主机,开启牵引,收卷,鼓风机,慢慢加气,最后测量厚度,宽度,到达预定数据后,剖边收卷,得产物。
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