CN111471253A - 一种耐高温抗粘压花薄膜及其制备方法 - Google Patents
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Abstract
本发明公开了一种耐高温抗粘压花薄膜及其制备方法,其质量份组成如下:PVC90‑100份、环氧大豆油2‑4份、热稳定剂2‑3份、增塑剂6‑8份、耐高温剂6‑8份、增粘剂3‑5份、抗氧剂3‑5份、阻燃剂8‑10份以及固化剂10‑15份。本发明通过在耐高温抗粘压花薄膜的制备工艺中,将压花模具从传统的上压花模具与下压花模具形状一致更改为镜像结构压花,并在压花模具上涂抹脱模机,解决了薄膜在吹膜过程中的易粘问题。
Description
技术领域
本发明涉及塑料薄膜技术领域,具体为一种耐高温抗粘压花薄膜及其制备方法。
背景技术
塑料加工行业中,塑料包装行业和农用塑料行业是产量最大的行业。其中各种各样、形形色色的塑料薄膜如包装膜、农地膜、大棚膜,无论是吹塑成型还是流延成形的,以及薄膜的延伸产品,这些塑料薄膜的耐热性都还有待提高,其中,抗粘膜由于其独特的抗粘性,易于清洗附着其表面的各种油渍,污点或其它附着物:在某些特殊工况或环境下,要求抗粘膜具备一定的耐高温性,但是抗粘膜在压花过程中,容易粘在压花模具上,造成压花模具的难清洗与难再利用性,严重影响产品质量甚至造成残次品。
发明内容
本发明的目的在于提供一种耐高温抗粘压花薄膜及其制备方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种耐高温抗粘压花薄膜,其质量份组成如下:PVC90-100份、环氧大豆油2-4份、热稳定剂2-3份、增塑剂6-8份、耐高温剂6-8份、增粘剂3-5份、抗氧剂3-5份、阻燃剂8-10份以及固化剂10-15份。
优选的,耐高温剂为聚酰亚胺,所述热稳定剂为液体钡锌复合物。
优选的,PVC的聚合度为1400-1600。
优选的,增塑剂为偏苯三酸三辛酯,所述增粘剂为聚甲基丙烯酸酯。
优选的,固化剂选用对羟基苯磺酸,所述阻燃剂选用氢氧化镁。
一种耐高温抗粘压花薄膜的制备方法,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
优选的,在步骤1中,搅拌机搅拌时间为25-30min,搅拌速度为120-130r/min。
优选的,在步骤2中,挤出温度为180-200℃。
优选的,在步骤4中,压纹装置由上压花模具和下压花模具组成,所述上压花模具和下压花模具之间形成一中心压区,上压花模具和下压花模具的表面均匀涂覆脱模剂。
优选的,上压花模具呈“倒凸型”结构,所述下压花模具呈“凸型”结构,上压花模具与下压花模具呈上下镜像对称结构。
与现有技术相比,本发明的有益效果是:
本发明通过在耐高温抗粘压花薄膜的制备工艺中,将压花模具从传统的上压花模具与下压花模具形状一致更改为镜像结构压花,并在压花模具上涂抹脱模机,解决了薄膜在吹膜过程中的易粘问题,同时通过在薄膜制备过程中增加各种助剂,膜热稳定性好,抗热变形性好,能够耐受冲压时表面局部高温,避免保护膜在高温下出现起皱甚至开裂的问题,有效提高了保护膜的使用寿命和保护效果。
具体实施方式
下面将结合本发明中的实施例,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:
本发明提供一种技术方案:一种耐高温抗粘压花薄膜,其质量份组成如下:PVC90份、环氧大豆油2份、热稳定剂2份、增塑剂6份、耐高温剂6份、增粘剂3份、抗氧剂3份、阻燃剂8份以及固化剂10份,耐高温剂为聚酰亚胺,所述热稳定剂为液体钡锌复合物,PVC的聚合度为1400,增塑剂为偏苯三酸三辛酯,所述增粘剂为聚甲基丙烯酸酯,固化剂选用对羟基苯磺酸,所述阻燃剂选用氢氧化镁。
一种耐高温抗粘压花薄膜的制备方法,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物,搅拌机搅拌时间为25min,搅拌速度为120r/min;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料,挤出温度为180℃;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花,压纹装置由上压花模具和下压花模具组成,所述上压花模具和下压花模具之间形成一中心压区,上压花模具和下压花模具的表面均匀涂覆脱模剂,上压花模具呈“倒凸型”结构,所述下压花模具呈“凸型”结构,上压花模具与下压花模具呈上下镜像对称结构;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
实施例2:
本发明提供一种技术方案:一种耐高温抗粘压花薄膜,其质量份组成如下:PVC95份、环氧大豆油3份、热稳定剂2份、增塑剂7份、耐高温剂7份、增粘剂4份、抗氧剂4份、阻燃剂9份以及固化剂12份,耐高温剂为聚酰亚胺,所述热稳定剂为液体钡锌复合物,PVC的聚合度为1500,增塑剂为偏苯三酸三辛酯,所述增粘剂为聚甲基丙烯酸酯,固化剂选用对羟基苯磺酸,所述阻燃剂选用氢氧化镁。
一种耐高温抗粘压花薄膜的制备方法,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物,搅拌机搅拌时间为25min,搅拌速度为125r/min;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料,挤出温度为190℃;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花,压纹装置由上压花模具和下压花模具组成,所述上压花模具和下压花模具之间形成一中心压区,上压花模具和下压花模具的表面均匀涂覆脱模剂,上压花模具呈“倒凸型”结构,所述下压花模具呈“凸型”结构,上压花模具与下压花模具呈上下镜像对称结构;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
实施例3:
本发明提供一种技术方案:一种耐高温抗粘压花薄膜,其质量份组成如下:PVC100份、环氧大豆油4份、热稳定剂3份、增塑剂8份、耐高温剂8份、增粘剂5份、抗氧剂5份、阻燃剂10份以及固化剂15份,耐高温剂为聚酰亚胺,所述热稳定剂为液体钡锌复合物,PVC的聚合度为1600,增塑剂为偏苯三酸三辛酯,所述增粘剂为聚甲基丙烯酸酯,固化剂选用对羟基苯磺酸,所述阻燃剂选用氢氧化镁。
一种耐高温抗粘压花薄膜的制备方法,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物,搅拌机搅拌时间为30min,搅拌速度为130r/min;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料,挤出温度为200℃;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花,压纹装置由上压花模具和下压花模具组成,所述上压花模具和下压花模具之间形成一中心压区,上压花模具和下压花模具的表面均匀涂覆脱模剂,上压花模具呈“倒凸型”结构,所述下压花模具呈“凸型”结构,上压花模具与下压花模具呈上下镜像对称结构;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
综上所述,上述实施例通过在耐高温抗粘压花薄膜的制备工艺中,将压花模具从传统的上压花模具与下压花模具形状一致更改为镜像结构压花,并在压花模具上涂抹脱模机,解决了薄膜在吹膜过程中的易粘问题,同时通过在薄膜制备过程中增加各种助剂,膜热稳定性好,抗热变形性好,能够耐受冲压时表面局部高温,避免保护膜在高温下出现起皱甚至开裂的问题,有效提高了保护膜的使用寿命和保护效果。
使用方法
一种耐高温抗粘压花薄膜的制备方法,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (10)
1.一种耐高温抗粘压花薄膜,其特征在于,其质量份组成如下:PVC90-100份、环氧大豆油2-4份、热稳定剂2-3份、增塑剂6-8份、耐高温剂6-8份、增粘剂3-5份、抗氧剂3-5份、阻燃剂8-10份以及固化剂10-15份。
2.根据权利要求1所述的一种耐高温抗粘压花薄膜,其特征在于:所述耐高温剂为聚酰亚胺,所述热稳定剂为液体钡锌复合物。
3.根据权利要求1所述的一种耐高温抗粘压花薄膜,其特征在于:所述PVC的聚合度为1400-1600。
4.根据权利要求1所述的一种耐高温抗粘压花薄膜,其特征在于:所述增塑剂为偏苯三酸三辛酯,所述增粘剂为聚甲基丙烯酸酯。
5.根据权利要求1所述的一种耐高温抗粘压花薄膜,其特征在于:所述固化剂选用对羟基苯磺酸,所述阻燃剂选用氢氧化镁。
6.一种耐高温抗粘压花薄膜的制备方法,其特征在于,包括如下步骤:
步骤1:按照配料重量份,将PVC、环氧大豆油、热稳定剂、增塑剂、耐高温剂、增粘剂、抗氧剂、阻燃剂以及固化剂加入到搅拌机中混合搅拌均匀,等到混合物;
步骤2:将混合物投入双螺杆挤出机挤出,得到挤出料;
步骤3:将挤出料投入塑料吹膜机,经挤出吹膜,得到热膜;
步骤4:将热膜引入压纹装置进行压花;
步骤5:将压花后的压纹热膜导出;
步骤6:冷却后制得压花薄膜。
7.根据权利要求6所述的一种耐高温抗粘压花薄膜的制备方法,其特征在于:在步骤1中,搅拌机搅拌时间为25-30min,搅拌速度为120-130r/min。
8.根据权利要求6所述的一种耐高温抗粘压花薄膜的制备方法,其特征在于:在步骤2中,挤出温度为180-200℃。
9.根据权利要求6所述的一种耐高温抗粘压花薄膜的制备方法,其特征在于:在步骤4中,压纹装置由上压花模具和下压花模具组成,所述上压花模具和下压花模具之间形成一中心压区,上压花模具和下压花模具的表面均匀涂覆脱模剂。
10.根据权利要求9所述的一种耐高温抗粘压花薄膜的制备方法,其特征在于:所述上压花模具呈“倒凸型”结构,所述下压花模具呈“凸型”结构,上压花模具与下压花模具呈上下镜像对称结构。
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