CN116985493A - 高保温转光长效消雾流滴棚内膜及其制备方法 - Google Patents
高保温转光长效消雾流滴棚内膜及其制备方法 Download PDFInfo
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Abstract
本发明属于农用薄膜技术领域,具体涉及高保温转光长效消雾流滴棚内膜及其制备方法。所述棚内膜包括外层膜、中层膜和内层膜,其中外层母料由抗氧剂、光稳定剂、流滴剂、乙烯‑醋酸乙烯共聚物、水滑石、低密度聚乙烯组成;中层母料由抗氧剂、光稳定剂、流滴剂、转光剂、白炭黑、水滑石、乙烯‑醋酸乙烯共聚物组成;外层母料由抗氧剂、光稳定剂、流滴剂、转光剂、消雾剂、水滑石、乙烯‑醋酸乙烯共聚物组成。该棚内膜具有良好的保温功能,消雾流滴持效期长达6个月,使用寿命长达1年,同时能将部分紫外线和绿光转换为对作物有用的蓝光和红橙光,有助于农作物生长,且厚度薄,重量轻,成本低。
Description
技术领域
本发明属于农用薄膜技术领域,具体涉及高保温转光长效消雾流滴棚内膜及其制备方法。
背景技术
目前的农用大棚膜材料多为聚乙烯(PE)和聚氯乙烯(PVC)材质,聚氯乙烯虽然保温性好,但其在加工过程中有一定的毒性,且废弃燃烧处理时会释放有毒气体氯气;聚乙烯对远红外线的阻隔率较低,其保温性相对较差。
基于上述原因,国内开始在大棚内大量地使用棚内膜,以期能起到保温作用。但市面上的棚内膜虽然具有一定的保温效果,但其消雾流滴持效期仅有2-3个月,往往在冬季最冷的时候失效滴水,导致棚内产生大面积冻害,造成严重的经济损失。因此,需要研究一种低成本且具有长效消雾流滴的棚内膜。
发明内容
本发明的目的是:提供一种高保温转光长效消雾流滴棚内膜,具有良好的保温功能,消雾流滴持效期长达6个月,使用寿命长达1年,同时能将部分波长380nm以下的紫外线转换为对作物有用的蓝光和红橙光,有助于农作物生长,而且该棚内膜厚度薄,重量轻,成本低;本发明还提供其制备方法,工艺合理,简单易行。
本发明所述的高保温转光长效消雾流滴棚内膜,由外到内包括外层膜、中层膜和内层膜;
所述外层膜由线型低密度聚乙烯(LLDPE)、低密度聚乙烯(LDPE)、乙烯-醋酸乙烯共聚物(EVA)和外层母料组成;其中外层母料由抗氧剂、光稳定剂、流滴剂、乙烯-醋酸乙烯共聚物、水滑石、低密度聚乙烯组成;
所述中层膜由线型低密度聚乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物和中层母料组成;其中中层母料由抗氧剂、光稳定剂、流滴剂、转光剂、白炭黑、水滑石、乙烯-醋酸乙烯共聚物组成;
所述内层膜由线型低密度聚乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物和内层母料组成;其中外层母料由抗氧剂、光稳定剂、流滴剂、转光剂、消雾剂、水滑石、乙烯-醋酸乙烯共聚物组成。
优选的,高保温转光长效消雾流滴棚内膜的厚度为0.01-0.03mm,各层的厚度百分占比为:外层膜30%、中层膜40%、内层膜30%。
优选的,以质量份数计,外层膜的原料组成为:
线型低密度聚乙烯 65-75份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 5-10份,
外层母料 10-15份。
优选的,以质量份数计,外层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 16-18份,
乙烯-醋酸乙烯共聚物 50-60份,
水滑石 7-8份,
低密度聚乙烯 10-18份。
优选的,以质量份数计,中层膜的原料组成为:
线型低密度聚乙烯 60-65份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 15-20份,
中层母料 10-15份。
优选的,以质量份数计,中层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 25-30份,
转光剂 3-5份,
白炭黑 2-3份,
水滑石 3-5份,
乙烯-醋酸乙烯共聚物 50-60份。
优选的,以质量份数计,内层膜的原料组成为:
线型低密度聚乙烯 50-60份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 25-30份,
内层母料 10-15份。
优选的,以质量份数计,内层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 20-25份,
转光剂 3-5份,
消雾剂 1-1.5份,
水滑石 8-10份,
乙烯-醋酸乙烯共聚物 55-60份。
优选的,所述线型低密度聚乙烯在190℃、2.16kg条件下的熔融指数为1g/10min,密度为0.921g/cm3。
优选的,所述低密度聚乙烯在190℃、2.16kg条件下的熔融指数为0.75g/10min,密度为0.925g/cm3。
优选的,所述乙烯-醋酸乙烯共聚物的乙酸乙烯酯基(VA)含量为12-18wt.%。
优选的,所述抗氧剂为受阻酚和亚磷酸酯复配;进一步优选为营口市风光化工有限公司生产的抗氧剂B225。
优选的,所述光稳定剂为受阻胺类光稳定剂;进一步优选为北京天罡有限责任公司生产的光稳定剂Tiangang® HS-944。
优选的,所述流滴剂为初期流滴剂和长效流滴剂复配;进一步优选的,所述流滴剂为初期流滴剂和长效流滴剂按质量比3:7复配。
其中,初期流滴剂的主要成分为甘油单脂肪酸酯、聚乙烯烷基醚,优选为临安精细化学品有限公司生产的流滴剂LA-6;长效流滴剂为山梨醇酐单脂肪酸酯,优选为临安精细化学品有限公司生产的流滴剂LA-12。
优选的,所述水滑石的粒径在0.3-1.5μm之间。
优选的,所述转光剂为含稀土离子Eu2+和Er3+的化合物,进一步优选为长沙西维尔有限公司生产的转光剂VGTBR,其激发和发射光谱图如图1所示,从图中可以看出,当以波长329nm的紫外线和475nm的绿光激发时,分别在400-500nm的蓝光范围以及600-700的红橙光范围有较强的发射峰。
优选的,所述白炭黑的粒径在1-2μm之间;进一步优选为淄博子能硅材料有限公司生产的白炭黑51511。
优选的,所述消雾剂的主要组分为含氟的表面活性剂;进一步优选为日本理研维他食品工业(上海)有限公司生产的消雾剂TF-31。
本发明所述的高保温转光长效消雾流滴棚内膜的制备方法,包括以下步骤:
(1)将外层母料的原料进行高温熔合,切粒,得到外层母料;
(2)将中层母料的原料进行高温熔合,切粒,得到中层母料;
(3)将内层母料的原料进行高温熔合,切粒,得到内层母料
(4)将外层、中层、内层的原料分别混合均匀,然后通入三层共挤吹塑机中,经高温塑化、吹胀、冷却成型、牵引卷取,制得高保温转光长效消雾流滴棚内膜。
优选的,所述三层共挤吹塑机的加工温度包括外层主机、中层主机、内层主机以及模头的外底部分、分配器部分、螺旋部分、内加热部分和调整环部分,其中:
外层主机1区160-165℃,2区165-168℃,3区170-173℃,4区175-180℃,5区180-185℃,6区185-190℃,连接管180-190℃,法兰190-195℃;
中层主机1区150-155℃,2区155-160℃,3区160-165℃,4区165-170℃,5区170-175℃,6区175-180℃,连接管180-190℃,法兰190-195℃;
内层主机1区145-150℃,2区150-155℃,3区155-160℃,4区160-165℃,5区165-170℃,6区170-175℃,连接管170-180℃,法兰180-190℃;
模头外底185-195℃,分配器185-195℃,螺旋1区-4区192-198℃,内加热187-193℃,调整环195-205℃。
与现有技术相比,本发明的有益效果如下:
(1)本发明以白炭黑和水滑石作为棚内膜保温剂和流滴剂的缓释剂,能够提高保温功能和延长流滴剂的持效期,并且能有效地延缓使用后期流滴失效面积的扩散问题;
(2)本发明采用初期流滴剂(甘油单脂肪酸酯和聚乙烯烷基醚)与长效流滴剂(山梨醇酐单脂肪酸酯)复配,延长棚内膜的流滴持效期;
(3)本发明采用EVA或EVA与低密度聚乙烯高压共混作为母料载体,能够增加流滴剂与母料载体的相容性,并对消雾剂和流滴剂之间起到很好的协同作用;
(4)本发明的棚内膜基料中使用EVA占比较高,能大幅度地提高棚内膜整体的保温性能,并提高母料中的功能性助剂与配料之间分散均匀度和结合度;
(5)本发明的棚内膜具有良好的保温功能,消雾流滴持效期长达6个月,使用寿命长达1年,同时能将部分波长380nm以下的紫外线转换为对作物有用的蓝光和红橙光,有助于农作物生长,而且该棚内膜厚度最低达到0.01mm,能够在单位重量内覆盖尽可能多的面积,从而降低使用成本。
附图说明
图1为本发明中转光剂VGTBR的激发和发射光谱图。
具体实施方式
下面结合实施例对本发明作进一步说明,实施例中所使用的原料,如无特别说明,均为市售常规原料;实施例中所使用的工艺方法,如无特别说明,均为本领域常规方法。
实施例中所采用的部分原料说明如下:
线型低密度聚乙烯:190℃、2.16kg条件下的熔融指数为1g/10min,密度为0.921g/cm3;
低密度聚乙烯:190℃、2.16kg条件下的熔融指数为0.75g/10min,密度为0.925g/cm3;
抗氧剂:营口市风光化工有限公司生产的B225抗氧剂;
光稳定剂:北京天罡有限责任公司生产的光稳定剂Tiangang® HS-944;
初期流滴剂:临安精细化学品有限公司生产的流滴剂LA-6;
长效流滴剂:临安精细化学品有限公司生产的流滴剂LA-12;
水滑石:粒径在0.3-1.5μm之间;
转光剂:长沙西维尔有限公司生产的转光剂VGTBR;
白炭黑:淄博子能硅材料有限公司生产的白炭黑51511;
消雾剂:日本理研维他食品工业(上海)有限公司生产的消雾剂TF-31。
实施例1
一种高保温转光长效消雾流滴棚内膜,以质量份数计,原料组成如下:
外层膜的原料组成为:线型低密度聚乙烯70份,低密度聚乙烯5份,乙烯-醋酸乙烯共聚物10份,外层母料10份;
外层母料的原料组成为:抗氧剂1.4份,光稳定剂4份,初期流滴剂4.8份,长效流滴剂11.2份,乙烯-醋酸乙烯共聚物54.6份,水滑石7份,低密度聚乙烯17份;
中层膜的原料组成为:线型低密度聚乙烯60份,低密度聚乙烯10份,乙烯-醋酸乙烯共聚物18份,中层母料12份;
中层母料的原料组成为:抗氧剂1.4份,光稳定剂4份,初期流滴剂7.5份,长效流滴剂17.5份,转光剂4.6份,白炭黑2份,水滑石3份,乙烯-醋酸乙烯共聚物60份;
内层膜的原料组成为:线型低密度聚乙烯50份,低密度聚乙烯10份,乙烯-醋酸乙烯共聚物28份,内层母料12份;
内层母料的原料组成为:抗氧剂1.4份,光稳定剂4.6份,初期流滴剂6份,长效流滴剂14份,转光剂5份,消雾剂1份,水滑石8份,乙烯-醋酸乙烯共聚物60份;
其中,乙烯-醋酸乙烯共聚物中乙酸乙烯酯基(VA)含量为15wt.%。
制备方法如下:
(1)将外层母料的原料进行高温熔合,切粒,得到外层母料;
(2)将中层母料的原料进行高温熔合,切粒,得到中层母料;
(3)将内层母料的原料进行高温熔合,切粒,得到内层母料
(4)将外层、中层、内层的原料分别混合均匀,然后通入三层共挤吹塑机中,经高温塑化、吹胀、冷却成型、牵引卷取,制得高保温转光长效消雾流滴棚内膜,膜厚度为0.03mm,各层的厚度百分占比为:外层膜30%、中层膜40%、内层膜30%;
三层共挤吹塑机的加工温度包括外层主机、中层主机、内层主机以及模头的外底部分、分配器部分、螺旋部分、内加热部分和调整环部分,其中:
外层主机1区160℃,2区165℃,3区170℃,4区175℃,5区180℃,6区185℃,连接管180℃,法兰190℃;
中层主机1区150℃,2区155℃,3区160℃,4区165℃,5区170℃,6区175℃,连接管180℃,法兰190℃;
内层主机1区145℃,2区150℃,3区155℃,4区160℃,5区165℃,6区170℃,连接管170℃,法兰180℃;
模头外底190℃,分配器190℃,螺旋1区-4区195℃,内加热190℃,调整环200℃。
实施例2
一种高保温转光长效消雾流滴棚内膜,以质量份数计,原料组成如下:
外层膜的原料组成为:线型低密度聚乙烯65份,低密度聚乙烯10份,乙烯-醋酸乙烯共聚物10份,外层母料15份;
外层母料的原料组成为:抗氧剂1.2份,光稳定剂6份,初期流滴剂5.4份,长效流滴剂12.6份,乙烯-醋酸乙烯共聚物50份,水滑石7.8份,低密度聚乙烯18份;
中层膜的原料组成为:线型低密度聚乙烯60份,低密度聚乙烯10份,乙烯-醋酸乙烯共聚物15份,中层母料15份;
中层母料的原料组成为:抗氧剂1.2份,光稳定剂6份,初期流滴剂8.4份,长效流滴剂19.6份,转光剂3份,白炭黑2.8份,水滑石4份,乙烯-醋酸乙烯共聚物55份;
内层膜的原料组成为:线型低密度聚乙烯60份,低密度聚乙烯5份,乙烯-醋酸乙烯共聚物25份,内层母料10份;
内层母料的原料组成为:抗氧剂1.2份,光稳定剂6份,初期流滴剂6.6份,长效流滴剂15.4份,转光剂3.3份,消雾剂1.5份,水滑石9份,乙烯-醋酸乙烯共聚物57份;
其中,乙烯-醋酸乙烯共聚物中乙酸乙烯酯基(VA)含量为12wt.%。
制备方法如下:
(1)将外层母料的原料进行高温熔合,切粒,得到外层母料;
(2)将中层母料的原料进行高温熔合,切粒,得到中层母料;
(3)将内层母料的原料进行高温熔合,切粒,得到内层母料
(4)将外层、中层、内层的原料分别混合均匀,然后通入三层共挤吹塑机中,经高温塑化、吹胀、冷却成型、牵引卷取,制得高保温转光长效消雾流滴棚内膜,膜厚度为0.02mm,各层的厚度百分占比为:外层膜30%、中层膜40%、内层膜30%;
三层共挤吹塑机的加工温度包括外层主机、中层主机、内层主机以及模头的外底部分、分配器部分、螺旋部分、内加热部分和调整环部分,其中:
外层主机1区165℃,2区168℃,3区173℃,4区180℃,5区185℃,6区190℃,连接管190℃,法兰195℃;
中层主机1区155℃,2区160℃,3区165℃,4区170℃,5区175℃,6区180℃,连接管190℃,法兰195℃;
内层主机1区150℃,2区155℃,3区160℃,4区165℃,5区170℃,6区175℃,连接管180℃,法兰190℃;
模头外底195℃,分配器195℃,螺旋1区-4区198℃,内加热193℃,调整环205℃。
实施例3
一种高保温转光长效消雾流滴棚内膜,以质量份数计,原料组成如下:
外层膜的原料组成为:线型低密度聚乙烯75份,低密度聚乙烯5份,乙烯-醋酸乙烯共聚物5份,外层母料15份;
外层母料的原料组成为:抗氧剂1.6份,光稳定剂5.4份,初期流滴剂4.8份,长效流滴剂11.2份,乙烯-醋酸乙烯共聚物60份,水滑石8份,低密度聚乙烯10份;
中层膜的原料组成为:线型低密度聚乙烯65份,低密度聚乙烯5份,乙烯-醋酸乙烯共聚物20份,中层母料10份;
中层母料的原料组成为:抗氧剂1.6份,光稳定剂5.4份,初期流滴剂9份,长效流滴剂21份,转光剂5份,白炭黑3份,水滑石5份,乙烯-醋酸乙烯共聚物50份;
内层膜的原料组成为:线型低密度聚乙烯55份,低密度聚乙烯10份,乙烯-醋酸乙烯共聚物30份,内层母料15份;
内层母料的原料组成为:抗氧剂1.6份,光稳定剂4份,初期流滴剂7.5份,长效流滴剂17.5份,转光剂3份,消雾剂1.4份,水滑石10份,乙烯-醋酸乙烯共聚物55份;
其中,乙烯-醋酸乙烯共聚物中乙酸乙烯酯基(VA)含量为18wt.%。
制备方法如下:
(1)将外层母料的原料进行高温熔合,切粒,得到外层母料;
(2)将中层母料的原料进行高温熔合,切粒,得到中层母料;
(3)将内层母料的原料进行高温熔合,切粒,得到内层母料
(4)将外层、中层、内层的原料分别混合均匀,然后通入三层共挤吹塑机中,经高温塑化、吹胀、冷却成型、牵引卷取,制得高保温转光长效消雾流滴棚内膜,膜厚度为0.01mm,各层的厚度百分占比为:外层膜30%、中层膜40%、内层膜30%;
三层共挤吹塑机的加工温度包括外层主机、中层主机、内层主机以及模头的外底部分、分配器部分、螺旋部分、内加热部分和调整环部分,其中:
外层主机1区162℃,2区166℃,3区172℃,4区178℃,5区182℃,6区188℃,连接管185℃,法兰192℃;
中层主机1区152℃,2区157℃,3区162℃,4区167℃,5区172℃,6区177℃,连接管185℃,法兰192℃;
内层主机1区147℃,2区152℃,3区157℃,4区162℃,5区167℃,6区172℃,连接管175℃,法兰185℃;
模头外底185℃,分配器185℃,螺旋1区-4区192℃,内加热187℃,调整环195℃。
对比例1
本对比例与实施例1的不同点仅在于,将中层母料中的白炭黑替换为等质量的高岭土,将外层母料、中层母料、内层母料中的水滑石替换为等质量的滑石粉。
对比例2
本对比例与实施例1的不同点仅在于,将外层母料、中层母料、内层母料中的长效流滴剂替换为等质量的初期流滴剂。
对比例3
本对比例与实施例1的不同点仅在于,将外层膜、中层膜、内层膜原料中的乙烯-醋酸乙烯共聚物替换为等质量的低密度聚乙烯。
对比例4
本对比例与实施例1的不同点仅在于,将外层母料、中层母料、内层母料中的乙烯-醋酸乙烯共聚物替换为等质量的低密度聚乙烯。
将各实施例和对比例制备的棚内膜进行性能测试,其中保温性通过红外光谱仪测试7-13μm波长之间的透过率来判定,透过率越高,表明红外阻隔率越差,则保温效果越差;流滴持效期通过水浴锅试验测试,使用直径300mm的平口水浴锅,在60℃水浴条件下连续测试,直到失效面积超过三分之一则判定失效。测试结果如表1所示。
表1
项目 | 实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | 对比例3 | 对比例4 |
红外透过率,%(7-13μm) | 54.84 | 54.33 | 53.98 | 60.73 | 54.77 | 64.55 | 62.43 |
水浴锅试验(60℃) | 12天6小时 | 12天6小时 | 12天7小时 | 10天1小时 | 5天9小时 | 10天3小时 | 10天18小时 |
从表1可以看出,实施例1-3的红外透过率的数值基本接近;对比例3和对比例4分别在原料和母料中去掉了乙烯-醋酸乙烯共聚物成分,红外透过率明显增高,保温性变差;对比例1将母料中的水滑石改为滑石粉,红外透过率也有所增加,保温性也变差。
水浴锅测试结果表明,对比例2失效最快,是因为流滴剂中只有初期流滴剂,不含任何长效流滴剂;其次对比例1由于母料成分中的白炭黑和水滑石换成了高岭土和滑石粉,失效速度变快;另外,对比例3将原料中的乙烯-醋酸乙烯共聚物替换为低密度聚乙烯,对比例4将母料中的乙烯-醋酸乙烯共聚物替换为低密度聚乙烯,也导致流滴失效速度变快。
Claims (10)
1.一种高保温转光长效消雾流滴棚内膜,其特征在于:由外到内包括外层膜、中层膜和内层膜;
所述外层膜由线型低密度聚乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物和外层母料组成;其中外层母料由抗氧剂、光稳定剂、流滴剂、乙烯-醋酸乙烯共聚物、水滑石、低密度聚乙烯组成;
所述中层膜由线型低密度聚乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物和中层母料组成;其中中层母料由抗氧剂、光稳定剂、流滴剂、转光剂、白炭黑、水滑石、乙烯-醋酸乙烯共聚物组成;
所述内层膜由线型低密度聚乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物和内层母料组成;其中外层母料由抗氧剂、光稳定剂、流滴剂、转光剂、消雾剂、水滑石、乙烯-醋酸乙烯共聚物组成;
所述流滴剂为初期流滴剂和长效流滴剂复配。
2.根据权利要求1所述的高保温转光长效消雾流滴棚内膜,其特征在于:高保温转光长效消雾流滴棚内膜的厚度为0.01-0.03mm,各层的厚度百分占比为:外层膜30%、中层膜40%、内层膜30%。
3.根据权利要求1所述的高保温转光长效消雾流滴棚内膜,其特征在于:以质量份数计,外层膜的原料组成为:
线型低密度聚乙烯 65-75份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 5-10份,
外层母料 10-15份;
以质量份数计,外层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 16-18份,
乙烯-醋酸乙烯共聚物 50-60份,
水滑石 7-8份,
低密度聚乙烯 10-18份。
4.根据权利要求1所述的高保温转光长效消雾流滴棚内膜,其特征在于:以质量份数计,中层膜的原料组成为:
线型低密度聚乙烯 60-65份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 15-20份,
中层母料 10-15份;
以质量份数计,中层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 25-30份,
转光剂 3-5份,
白炭黑 2-3份,
水滑石 3-5份,
乙烯-醋酸乙烯共聚物 50-60份。
5.根据权利要求1所述的高保温转光长效消雾流滴棚内膜,其特征在于:以质量份数计,内层膜的原料组成为:
线型低密度聚乙烯 50-60份,
低密度聚乙烯 5-10份,
乙烯-醋酸乙烯共聚物 25-30份,
内层母料 10-15份;
以质量份数计,内层母料的原料组成为:
抗氧剂 1.2-1.6份,
光稳定剂 4-6份,
流滴剂 20-25份,
转光剂 3-5份,
消雾剂 1-1.5份,
水滑石 8-10份,
乙烯-醋酸乙烯共聚物 55-60份。
6.根据权利要求1-5任一项所述的高保温转光长效消雾流滴棚内膜,其特征在于:所述线型低密度聚乙烯在190℃、2.16kg条件下的熔融指数为1g/10min,密度为0.921g/cm3;
所述低密度聚乙烯在190℃、2.16kg条件下的熔融指数为0.75g/10min,密度为0.925g/cm3;
所述乙烯-醋酸乙烯共聚物的乙酸乙烯酯基含量为12-18wt.%。
7.根据权利要求6所述的高保温转光长效消雾流滴棚内膜,其特征在于:所述抗氧剂为受阻酚和亚磷酸酯复配;所述光稳定剂为受阻胺类光稳定剂。
8.根据权利要求6所述的高保温转光长效消雾流滴棚内膜,其特征在于:所述流滴剂为初期流滴剂和长效流滴剂按质量比3:7复配。
9.根据权利要求6所述的高保温转光长效消雾流滴棚内膜,其特征在于:所述水滑石的粒径在0.3-1.5μm之间;
所述转光剂为含稀土离子Eu2+和Er3+的化合物;
所述白炭黑的粒径在1-2μm之间;
所述消雾剂的主要组分为含氟的表面活性剂。
10.一种权利要求1-5任一项所述的高保温转光长效消雾流滴棚内膜的制备方法,其特征在于:包括以下步骤:
(1)将外层母料的原料进行高温熔合,切粒,得到外层母料;
(2)将中层母料的原料进行高温熔合,切粒,得到中层母料;
(3)将内层母料的原料进行高温熔合,切粒,得到内层母料
(4)将外层、中层、内层的原料分别混合均匀,然后通入三层共挤吹塑机中,经高温塑化、吹胀、冷却成型、牵引卷取,制得高保温转光长效消雾流滴棚内膜;
所述三层共挤吹塑机的加工温度包括外层主机、中层主机、内层主机以及模头的外底部分、分配器部分、螺旋部分、内加热部分和调整环部分,其中:
外层主机1区160-165℃,2区165-168℃,3区170-173℃,4区175-180℃,5区180-185℃,6区185-190℃,连接管180-190℃,法兰190-195℃;
中层主机1区150-155℃,2区155-160℃,3区160-165℃,4区165-170℃,5区170-175℃,6区175-180℃,连接管180-190℃,法兰190-195℃;
内层主机1区145-150℃,2区150-155℃,3区155-160℃,4区160-165℃,5区165-170℃,6区170-175℃,连接管170-180℃,法兰180-190℃;
模头外底185-195℃,分配器185-195℃,螺旋1区-4区192-198℃,内加热187-193℃,调整环195-205℃。
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