CN117089150A - 一种高标准农田所用保湿保墒地膜及其制备方法 - Google Patents
一种高标准农田所用保湿保墒地膜及其制备方法 Download PDFInfo
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Abstract
本发明属于农业用品技术领域,本发明提供了一种高标准农田所用保湿保墒地膜及其制备方法。该保湿保墒地膜包括以下重量份的组分:高压聚乙烯30~50份,线性低密度聚乙烯30~50份,松树皮粉末10~30份,海藻粉10~20份,聚丙烯酰胺1~10份,山梨糖醇1~10份,碳酸钙1~5份,抗氧剂1~5份,光稳定剂1~5份。本发明制备的保湿保墒地膜在不丧失其机械性能的情况下,还具有优异的保湿保墒性能以及抗老化性能等。
Description
技术领域
本发明涉及农业用品技术领域,尤其涉及一种高标准农田所用保湿保墒地膜及其制备方法。
背景技术
高标准农田是指在划定的基本农田保护区范围内,建成集中连片、设施配套、高产稳产、生态良好、抗灾能力强、与现代农业生产和经营方式相适应的高标准基本农田,属于“田成方、土成型、渠成网、路相通、沟相连、土壤肥、旱能灌、涝能排、无污染、产量高”的稳定保量的粮田。建设高标准农田,是巩固和提高粮食生产能力,保障国家粮食安全的关键举措。
由于农用地膜具有保湿、保温、抗虫、防病、抑制杂草生长等作用,可保持土壤水分、提高水分利用率,缓解干旱半干旱地区土壤缺水问题,同时改善农作物生长环境,有利于作物生长发育,提高作物产量及农业效益,成为继化肥、农药后的第三大农资。但目前市场上的保湿保墒地膜性能一般,易老化降解,对农作物保护期不够。
因此,如何提供一种使用寿命长,保湿保墒性能优异的农用地膜成为了本领域技术人员亟需解决的问题。
发明内容
有鉴于此,本发明提供了一种高标准农田所用保湿保墒地膜及其制备方法。其目的是解决现有保湿保墒地膜性能一般,易老化降解,对农作物保护期不够等技术问题。
为了达到上述目的,本发明采用如下技术方案:
本发明提供了一种高标准农田所用保湿保墒地膜,包括以下重量份的组分:
高压聚乙烯30~50份,线性低密度聚乙烯30~50份,松树皮粉末10~30份,海藻粉10~20份,聚丙烯酰胺1~10份,山梨糖醇1~10份,碳酸钙1~5份,抗氧剂1~5份,光稳定剂1~5份。
进一步的,所述松树皮粉末的粒径为30~100目。
进一步的,所述抗氧剂为抗氧剂1010、抗氧剂618、抗氧剂314和抗氧剂2246中的一种或几种。
进一步的,所述光稳定剂为AM-101、GW-540、HPT和HS-201中的一种或几种。
本发明还提供了上述高标准农田所用保湿保墒地膜的制备方法,包括以下步骤:
将所有组分混合得到混合料,将混合料顺次进行塑化挤出、吹胀牵引即得高标准农田所用保湿保墒地膜。
进一步的,所述塑化挤出的温度为190~250℃。
进一步的,所述吹胀牵引的吹胀比为2.5~3.0,牵引比为4~6。
经由上述的技术方案可知,与现有技术相比,本发明的有益效果如下:
本发明使用的松树皮粉末具有优异的保水能力,可增强地膜的保湿保墒能力,并且,即便在后期土地含有残留的地膜,松树皮粉末还可以为植物提供充分的养分;山梨糖醇和海藻粉都具有较强的吸湿能力,并且海藻粉还能在农用地膜上形成一层保护膜,防止水分散发;抗氧剂增强了地膜的抗老化性能,光稳定剂增强了农用地膜的抗紫外线性能,而碳酸钙则是提高了地膜的耐磨性和抗拉强度,延长了地膜的使用寿命。总之,本发明制备的高标准农田所用保湿保墒地膜在不丧失其机械性能的情况下,还具有优异的保湿保墒性能以及抗老化性能等。
具体实施方式
本发明提供了一种高标准农田所用保湿保墒地膜,包括以下重量份的组分:
高压聚乙烯30~50份,线性低密度聚乙烯30~50份,松树皮粉末10~30份,海藻粉10~20份,聚丙烯酰胺1~10份,山梨糖醇1~10份,碳酸钙1~5份,抗氧剂1~5份,光稳定剂1~5份。
在本发明中,高压聚乙烯的用量优选为35~45份,进一步优选为40份。
在本发明中,线性低密度聚乙烯的用量优选为35~45份,进一步优选为40份。
在本发明中,松树皮粉末的用量优选为15~25份,进一步优选为20份。
在本发明中,海藻粉的用量优选为12~18份,进一步优选为14~16份。
在本发明中,聚丙烯酰胺的用量优选为2~8份,进一步优选为4~6份。
在本发明中,山梨糖醇的用量优选为2~8份,进一步优选为4~6份。
在本发明中,碳酸钙的用量优选为2~4份,进一步优选为3份。
在本发明中,抗氧剂的用量优选为2~4份,进一步优选为3份。
在本发明中,光稳定剂的用量优选为2~4份,进一步优选为3份。
在本发明中,所述松树皮粉末的粒径为30~100目,优选为40~80目,进一步优选为50~60目。
在本发明中,所述抗氧剂为抗氧剂1010、抗氧剂618、抗氧剂314和抗氧剂2246中的一种或几种,优选为抗氧剂1010、抗氧剂314和抗氧剂2246中的一种或几种,进一步优选为抗氧剂1010和/或抗氧剂314。
在本发明中,所述光稳定剂为AM-101、GW-540、HPT和HS-201中的一种或几种,优选为AM-101、GW-540和HS-201中的一种或几种,进一步优选为AM-101和/或GW-540。
本发明还提供了上述高标准农田所用保湿保墒地膜的制备方法,包括以下步骤:
将所有组分混合得到混合料,将混合料顺次进行塑化挤出、吹胀牵引即得高标准农田所用保湿保墒地膜。
在本发明中,所述塑化挤出的温度为190~250℃,优选为200~230℃,进一步优选为220℃。
在本发明中,所述吹胀牵引的吹胀比为2.5~3.0,优选为2.6~2.9,进一步优选为2.7~2.8;牵引比为4~6,优选为5。
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本实施例所用原料如下:高压聚乙烯40份,线性低密度聚乙烯40份,松树皮粉末20份,海藻粉16份,聚丙烯酰胺4份,山梨糖醇4份,碳酸钙3份,抗氧剂(1010)3份,光稳定剂(AM-101)3份。
将所有组分混合均匀得到混合料,将混合料通过自动送料机投入到塑化挤出机料斗自动塑化挤出、吹胀牵引;其中,塑化挤出的温度为220℃,吹胀牵引的吹胀比为2.8,牵引比5,经收卷分切,即得高标准农田所用保湿保墒地膜。
实施例2
本实施例所用原料如下:高压聚乙烯45份,线性低密度聚乙烯35份,松树皮粉末25份,海藻粉14份,聚丙烯酰胺6份,山梨糖醇6份,碳酸钙2份,抗氧剂(314)2份,光稳定剂(GW-540)4份。
将所有组分混合均匀得到混合料,将混合料通过自动送料机投入到塑化挤出机料斗自动塑化挤出、吹胀牵引;其中,塑化挤出的温度为200℃,吹胀牵引的吹胀比为2.7,牵引比6,经收卷分切,即得高标准农田所用保湿保墒地膜。
实施例3
本实施例所用原料如下:高压聚乙烯35份,线性低密度聚乙烯45份,松树皮粉末15份,海藻粉18份,聚丙烯酰胺2份,山梨糖醇8份,碳酸钙4份,抗氧剂(2246)2份,光稳定剂(HS-201)4份。
将所有组分混合均匀得到混合料,将混合料通过自动送料机投入到塑化挤出机料斗自动塑化挤出、吹胀牵引;其中,塑化挤出的温度为230℃,吹胀牵引的吹胀比为3.0,牵引比4,经收卷分切,即得高标准农田所用保湿保墒地膜。
对比例1
与实施例1所用的原料、原料用量及制备方法相同,不同的是不包括松树皮粉末。
对比例2
与实施例1所用的原料、原料用量及制备方法相同,不同的是不包括海藻粉。
对比例3
与实施例1所用的原料、原料用量及制备方法相同,不同的是不包括碳酸钙。
性能测试
实施例1~3及对比例1~3制备的高标准农田所用保湿保墒地膜的物理机械性能试验结果见表1和表2,高标准农田所用保湿保墒地膜的测试厚度均在0.01~0.013mm之间。
表1保湿保墒地膜初始的物理机械性能
由表1可得,本发明制备的高标准农田所用保湿保墒地膜的物理机械性能均符合国标GB13735-92Ⅲ类优等品级别,物理机械性能优异。
表2保湿保墒地膜使用不同时间后的物理机械性能
由表2可得,本发明所制备的保湿保墒地膜的各项性能在使用过程中保留完好,说明该保湿保墒地膜的耐老化性能优异,使用寿命长。并且各物理机械性能保留率在60%以上,有利于清除回收,保护环境。
依照GB/T 1037-1988塑料薄膜和片材透水蒸气性试验方法杯式法测试保湿保墒地膜的水蒸气透过量,结果见表3。
表3保湿保墒地膜的保墒性能
由表3可得,发明所制备的保湿保墒地膜的水蒸气透过量较低,说明保湿保墒性能优异。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (7)
1.一种高标准农田所用保湿保墒地膜,其特征在于,包括以下重量份的组分:
高压聚乙烯30~50份,线性低密度聚乙烯30~50份,松树皮粉末10~30份,海藻粉10~20份,聚丙烯酰胺1~10份,山梨糖醇1~10份,碳酸钙1~5份,抗氧剂1~5份,光稳定剂1~5份。
2.根据权利要求1所述的高标准农田所用保湿保墒地膜,其特征在于,所述松树皮粉末的粒径为30~100目。
3.根据权利要求2所述的高标准农田所用保湿保墒地膜,其特征在于,所述抗氧剂为抗氧剂1010、抗氧剂618、抗氧剂314和抗氧剂2246中的一种或几种。
4.根据权利要求1~3任一项所述的高标准农田所用保湿保墒地膜,其特征在于,所述光稳定剂为AM-101、GW-540、HPT和HS-201中的一种或几种。
5.权利要求1~4任一项所述高标准农田所用保湿保墒地膜的制备方法,其特征在于,包括以下步骤:
将所有组分混合得到混合料,将混合料顺次进行塑化挤出、吹胀牵引即得高标准农田所用保湿保墒地膜。
6.根据权利要求5所述的制备方法,其特征在于,所述塑化挤出的温度为190~250℃。
7.根据权利要求6所述的制备方法,其特征在于,所述吹胀牵引的吹胀比为2.5~3.0,牵引比为4~6。
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