CN104513423A - 多功能农膜保温树脂母粒及其制备方法 - Google Patents

多功能农膜保温树脂母粒及其制备方法 Download PDF

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CN104513423A
CN104513423A CN201510037713.XA CN201510037713A CN104513423A CN 104513423 A CN104513423 A CN 104513423A CN 201510037713 A CN201510037713 A CN 201510037713A CN 104513423 A CN104513423 A CN 104513423A
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王晓玲
李玉德
周自政
王陆和
谢婧祺
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GANSU JUNENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种多功能农膜保温树脂母粒及其制备方法,以解决现有农膜保温效果差、保温时间短、透光性差的问题。它由下列重量份的原料配制而成:水滑石22份-28份、石英4份-6份、硅藻土1份-3份、滑石粉1份-3份、高岭土2份-4份、碳酸钙1份-3份、二氧化硅1份-3份、耐候树脂母粒3份-6份、乙烯-醋酸乙烯共聚物5份-8份、茂金属1份-3份、紫外线吸收剂0.8份-1.5份、分散剂聚乙烯蜡1份-3份、线型低密度聚乙烯粉料29.5份-42.7份、高密度聚乙烯粉料5份-10份。本发明所生产的多功能农膜保温树脂母料,在农膜生产中不仅同时起到了加工助剂、保温助剂、开口助剂、缓释助剂、耐候助剂等作用,而且可使农膜内的夜间温度提高7-10℃。

Description

多功能农膜保温树脂母粒及其制备方法
技术领域
   本发明属于农膜领域,具体涉及一种多功能农膜保温树脂母粒及其制备方法。
背景技术
    目前,我国是世界上农膜使用量最大的国家,虽然功能性农膜发展有了长足的进步,特别是在防老化、流滴、消雾等方面的技术趋于成熟。但是,在保温树脂母粒的应用上,我国与世界先进水平相比,仍有很大差距,这些差距主要表现在国产普通农膜保温效果差,保温时间短,紫外线吸收能力差,无法抵御我国西北地区寒冷天气特点,这种天气易造成温室大棚内的农作物冻死。这对西部地区底子薄、不富裕的农民来说是一种致命的打击。
随着农用薄膜的广泛应用,市场对农膜性能的要求也逐步提高,必将促进高档农膜的发展,并使农膜功能分得更细、要求更高。
发明内容
本发明的目的是提供一种多功能农膜保温树脂母粒,以解决现有农膜保温效果差、保温时间短、透光性差的问题。
本发明的另一个目的是提供一种多功能农膜保温树脂母粒的制备方法。
为了达到上述目的,本发明采取以下技术方案:.一种多功能农膜保温树脂母粒,它由下列重量百分比的原料配制而成:水滑石22份-28份、石英4份-6份、硅藻土1份-3份、滑石粉1份-3份、高岭土2份-4份、碳酸钙1份-3份、二氧化硅1份-3份、耐候树脂母粒3份-6份、乙烯-醋酸乙烯共聚物(EVA)5份-8份、茂金属1份-3份、紫外线吸收剂0.8份-1.5份、分散剂聚乙烯蜡1份-3份、线型低密度聚乙烯粉料29.5份-42.7份、高密度聚乙烯粉料5份-10份。
作为本发明多功能农膜保温树脂母粒的进一步改进,所述耐候树脂母粒由下列重量百分比的原料配制而成:抗氧剂1份—2份、光稳定剂0.5份—1份、分散剂聚乙烯蜡1.5份—3份、线型低密度聚乙烯粉料54份—76.5、低密度聚乙烯粉料8份—30份、高密度聚乙烯粉料5.8份—10份。
上述多功能农膜保温树脂母粒的制备方法,包括如下步骤:
A制备耐候树脂母粒:将耐候树脂母粒的配料共混,搅拌均匀后,通过双螺杆挤出机中进行熔融接枝反应加工而成,工艺流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,挤出过程温度控制在134℃—180℃之间,塑化时间为5—10min;
B、多功能农膜保温树脂母粒的制备:
按照配料共混,搅拌均匀后,通过双螺杆挤出机中进行熔融接枝反应加工而成,其工艺流程为:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛;一区加热的温度为145℃-155℃,二区加热的温度为155℃-160℃,三区加热的温度为:160℃-165℃,四区加热的温度为165℃-170℃,五区加热的温度为170℃-175℃,六区加热的温度为175℃-180℃;加工温度一定要严格控制不能超过210℃, 否则交联度无法控制,易出现过度交联产生凝胶,使农膜的力学机械性能变差,发生脆性破裂,同时还会出现加工设备损坏。塑化时间5—10min。
本发明相对现有技术具有以下效果;由于本发明在原料中加入了水滑石、石英、硅藻土、滑石粉、高岭土、碳酸钙、耐候树脂母粒等物料,制得高阻隔、高透明、高保温的农膜,解决了我国目前农膜保温效果差,保温时间短,紫外线吸收能力差,分散不均匀等方面的不足,在农膜生产中不仅同时起到了加工助剂、保温助剂、开口助剂、缓释助剂、耐候助剂等所起的作用,而且可使农膜内的夜间温度提高7-10℃。减少了昼夜温差,有利于农作物生长,也使得我国功能性农膜发展有长足的进步,也具有很好的市场前景。
具体实施方式
下面的实施例可以进一步说明本发明,但不以任何方式限制本发明。
实施例中原料来源如下:水滑石-兰州助剂厂、石英-兰州助剂厂、硅藻土-兰州助剂厂、滑石粉-甘肃省酒泉市华兴矿业加工厂、高岭土-北京利国伟业超细粉体有限公司、碳酸钙-石家庄鑫隆矿产品有限公司、二氧化硅-郑州向往化工厂、乙烯-醋酸乙烯共聚物(EVA)-北京东方石油化工有限公司、茂金属-北京东方石油化工有限公司、紫外线吸收剂-瑞士汽巴精化公司、分散剂聚乙烯蜡-上海锦辉润滑油厂、线型低密度聚乙烯料-中国神话集团包头煤化工分公司、高密度聚乙烯粉料-中石油兰州石化分公司。
实施例中设备及仪器来源如下:Φ67双螺杆挤出机(长/径=34/1)-德国Lestreiz公司、高速混合机-莱州鼎盛塑料机械厂、 切粒机-莱州鼎盛塑料机械厂、 拉力试验机-承德金建检测仪器有限公司、Φ90复合吹膜机-莱芜市鑫基地塑料机械有限公司。
实施例1
A、制备耐候树脂母粒
按以下重量百分比加入原料:抗氧剂1%、光稳定剂0.5%、分散剂聚乙烯蜡1.5%、线型低密度聚乙烯粉料76.2%、低密度聚乙烯粉料15%、高密度聚乙烯粉料5.8%。
耐候树脂母粒的制备:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,采用现有工艺,流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,同时要求塑料造粒机挤出过程温度控制在150℃,塑化时间8min。
B、多功能农膜保温树脂母粒的制备
按以下重量百分比加入原料:水滑石24%、石英4%、硅藻土2%、滑石粉1.5%、高岭土2%、碳酸钙3%、二氧化硅1%、耐候树脂母粒5%、乙烯-醋酸乙烯共聚物(EVA)5%、茂金属2%、紫外线吸收剂0.8%、分散剂聚乙烯蜡1%、线型低密度聚乙烯粉料42.7%、高密度聚乙烯粉料6%。
多功能农膜保温树脂母粒的制备过程为:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,采用现有工艺,流程为:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛。
要求:一区加热的温度为150℃,二区加热的温度为155℃,三区加热的温度为:160℃,四区加热的温度为165℃,五区加热的温度为170℃,六区加热的温度为175℃。
实施例2
 A、制备耐候树脂母粒
按以下重量百分比加入原料:抗氧剂2%、光稳定剂1%、分散剂聚乙烯蜡2.5%、线型低密度聚乙烯粉料76.5%、低密度聚乙烯粉料8%、高密度聚乙烯粉料10%。
耐候树脂母粒的制备:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,工艺流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,同时要求塑料造粒机挤出过程温度控制在134℃,塑化时间5min。
B、多功能农膜保温树脂母粒的制备:
按以下重量百分比加入原料:水滑石26%、石英5%、硅藻土3%、滑石粉2.5%、高岭土3%、碳酸钙3%、二氧化硅2.5%、耐候树脂母粒6%、乙烯-醋酸乙烯共聚物(EVA)5%、茂金属3%、紫外线吸收剂1%、分散剂聚乙烯蜡2%、线型低密度聚乙烯粉料32%、高密度聚乙烯粉料6%。
     多功能农膜保温树脂母粒的制备过程为:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,其工艺流程:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛。
要求:一区加热的温度为145℃,二区加热的温度为155℃,三区加热的温度为160℃,四区加热的温度为165℃,五区加热的温度为170℃,六区加热的温度为175℃。塑化时间10min。
实施例3
A、制备耐候树脂母粒
按以下重量百分比加入原料:抗氧剂2%、光稳定剂1%、分散剂聚乙烯蜡3%、线型低密度聚乙烯粉料54%、低密度聚乙烯粉料30%、高密度聚乙烯粉料10%。
耐候树脂母粒的制备:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,工艺流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,同时要求塑料造粒机挤出过程温度控制在180℃之间,塑化时间10min。
B、多功能农膜保温树脂母粒的制备:
按以下重量百分比加入原料:水滑石28%、石英6%、硅藻土1%、滑石粉3%、高岭土4%、碳酸钙1%、二氧化硅3%、耐候树脂母粒6%、乙烯-醋酸乙烯共聚物(EVA)8%、茂金属1%、紫外线吸收剂1.5%、分散剂聚乙烯蜡3%、线型低密度聚乙烯粉料29.5%、高密度聚乙烯粉料5%。
     多功能农膜保温树脂母粒的制备过程为:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,其工艺流程:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛。
要求:一区加热的温度为155℃,二区加热的温度为160℃,三区加热的温度为165℃,四区加热的温度为170℃,五区加热的温度为175℃,六区加热的温度为180℃。塑化时间10min。
实施例4
A、制备耐候树脂母粒
按以下重量百分比加入原料:抗氧剂2%、光稳定剂1%、分散剂聚乙烯蜡2.5%、线型低密度聚乙烯粉料76.5%、低密度聚乙烯粉料8%、高密度聚乙烯粉料10%。
耐候树脂母粒的制备:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,工艺流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,同时要求塑料造粒机挤出过程温度控制在150℃之间,塑化时间8min。
B、多功能农膜保温树脂母粒的制备:
按以下重量百分比加入原料:水滑石22%、石英6%、硅藻土1%、滑石粉1%、高岭土4%、碳酸钙1%、二氧化硅3%、耐候树脂母粒3%、乙烯-醋酸乙烯共聚物(EVA)8%、茂金属3%、紫外线吸收剂1.5%、分散剂聚乙烯蜡3%、线型低密度聚乙烯粉料33.5%、高密度聚乙烯粉料10%。
     多功能农膜保温树脂母粒的制备过程为:配料共混搅拌均匀后通过双螺杆挤出机中进行熔融接枝反应加工而成,其工艺流程:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛。
要求:一区加热的温度为155℃,二区加热的温度为160℃,三区加热的温度为165℃,四区加热的温度为170℃,五区加热的温度为175℃,六区加热的温度为180℃。塑化时间10min。
效果试验
本发明制得的多功能农膜保温树脂母粒的检测报告见表1,在农膜中应用温度试验结果见表2,结果表明在农用地膜中添加本发明保温树脂母粒可提高地温3—5℃。

Claims (3)

1.一种多功能农膜保温树脂母粒,其特征在于它由下列重量份的原料配制而成:水滑石22份-28份、石英4份-6份、硅藻土1份-3份、滑石粉1份-3份、高岭土2份-4份、碳酸钙1份-3份、二氧化硅1份-3份、耐候树脂母粒3份-6份、乙烯-醋酸乙烯共聚物5份-8份、茂金属1份-3份、紫外线吸收剂0.8份-1.5份、分散剂聚乙烯蜡1份-3份、线型低密度聚乙烯粉料29.5份-42.7份、高密度聚乙烯粉料5份-10份。
2.根据权利要求1所述的一种多功能农膜保温树脂母粒,其特征在于:所述耐候树脂母粒由下列重量份的原料配制而成:抗氧剂1份—2份、光稳定剂0.5份—1份、分散剂聚乙烯蜡1.5份—3份、线型低密度聚乙烯粉料54份—76.5、低密度聚乙烯粉料8份—30份、高密度聚乙烯粉料5.8份—10份。
3.权利要求2所述多功能农膜保温树脂母粒的制备方法,其特征在于它包括如下步骤:
A制备耐候树脂母粒:将耐候树脂母粒的配料共混,搅拌均匀后,通过双螺杆挤出机中进行熔融接枝反应加工而成,工艺流程为:塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、打包、入库,挤出过程温度控制在134℃—180℃之间,塑化时间为5—10min;
B、多功能农膜保温树脂母粒的制备:
按照配料共混,搅拌均匀后,通过双螺杆挤出机中进行熔融接枝反应加工而成,其工艺流程为:喂料、一区加热、二区加热、三区加热、四区加热、五区加热、六区加热、塑化、过滤、挤出、拉丝、冷却、切割、烘干、称重、检验、包装标识、入库码垛;一区加热的温度为145℃-155℃,二区加热的温度为155℃-160℃,三区加热的温度为:160℃-165℃,四区加热的温度为165℃-170℃,五区加热的温度为170℃-175℃,六区加热的温度为175℃-180℃;塑化时间5—10min。
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