CN106189211A - 一种耐高温真空袋薄膜lvf230b及其制备方法 - Google Patents

一种耐高温真空袋薄膜lvf230b及其制备方法 Download PDF

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CN106189211A
CN106189211A CN201610537831.1A CN201610537831A CN106189211A CN 106189211 A CN106189211 A CN 106189211A CN 201610537831 A CN201610537831 A CN 201610537831A CN 106189211 A CN106189211 A CN 106189211A
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vacuum bag
thin film
raw material
temperature resistant
high temperature
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胡仲杰
岑婵芳
胡潇
王沈巍
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Shanghai Lek Tech Ltd By Share Ltd
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Abstract

本发明公开了一种耐高温真空袋薄膜,由以下重量份的原料混合后吹出成型:PA6:50~75份;PA66:15~40份;弹性体:1~10份;热稳定剂:0~4份;色母:0.2~2份。本发明还公开了一种耐高温真空袋薄膜的制备方法,包括以下步骤:按照上述技术方案中的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。

Description

一种耐高温真空袋薄膜LVF230B及其制备方法
技术领域
本发明涉及真空袋薄膜领域,特别涉及一种耐高温真空袋薄膜LVF230B及其制备方法。其中,真空薄膜的英文为Vacuum Film,可简称为VF,本发明的真空袋薄膜最高使用温度可以达到230℃以上,属于230℃以上耐温级别,而且本发明的真空袋薄膜为蓝色(Blue),所以本发明的耐高温真空袋薄膜可定义为LVF230B。
背景技术
随着航空航天技术的日益提高,越来越多的高性价比的复合材料用于航空航天领域,同时对于耐高温真空袋薄膜的需求量也迅猛发展,而对耐高温真空袋薄膜的品质也有了极高的要求。
真空袋膜作为真空工艺的重要耗材,是一款决定了产品质量的主材料。随着高温树脂的研发成功,真空耗材要求同样提升,传统的尼龙复合膜无法满足高温成型温度要求。现有市场的高温真空袋基本依赖进口,国产化进程缓慢且占有率低,有着巨大的市场前景和空间。
虽然,目前有中国专利申请公布CN105038204A公开了一种耐高温真空袋膜及其制备方法,但是上述专利的拉伸强度、伸长率、模量、耐温性能较低,难以满足使用要求。
发明内容
本发明所要解决的技术问题在于针对现有技术所存在的问题而提供一种耐高温真空袋薄膜及其制备方法,其最高使用温度可以达到230℃满足航空航天领域对于真空袋薄膜所需的强度、模量、耐温性的要求,同时保障了真空袋的气密性需求。
本发明所解决的技术问题可以采用以下技术方案来实现:
一种耐高温真空袋薄膜,其特征在于,由以下重量份的原料混合后吹出成型:
PA6:50~75份;
PA66:15~40份;
弹性体:1~10份;
热稳定剂:0~4份;
色母:0.2~2份。
在本发明的一个优选实施例中,所述耐高温真空袋薄膜由以下重量份的原料混合后吹出成型:
PA6:60份;
PA66:32份;
弹性体:6份;
热稳定剂:1份;
色母:1份。
一种如上述任一技术方案所述的耐高温真空袋薄膜的制备方法,其特征在于,包括以下步骤:按照上述任一技术方案中的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。
在本发明的一个优选实施例中,所述螺杆塑料挤出机的螺杆温度为260~275℃,转速为15~80rpm,挤出加工压力为15~30MPa;所述单层吹膜机的温度为265~285℃,吹胀比为1.4~2,薄膜厚度为30~100um,卷曲速度10~60m/min。
由于采用了如上的技术方案,本发明最高使用温度可以达到230℃,满足航空航天领域对于真空袋薄膜所需的强度、模量、耐温性的要求,同时保障了真空袋的气密性需求。本发明的薄膜的拉伸性能如下表:
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面进一步阐述本发明,以下所有实施例中,其成分含量均选用重量份数。
实施例1
一种耐高温真空袋薄膜,由以下重量份的原料混合后吹出成型:
PA6:50份;
PA66:40份;
弹性体:6份;
热稳定剂:3份;
色母:1份。
一种耐高温真空袋薄膜的制备方法,包括以下步骤:按照上述的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。螺杆塑料挤出机的螺杆温度为260℃,转速为15rpm,挤出加工压力为15MPa;单层吹膜机的温度为265℃,吹胀比为1.4,薄膜厚度为30um,卷曲速度10m/min。
实施例1得到的薄膜的拉伸性能参数如下表1
表1
实施例1的最高耐温温度为223℃
实施例2
一种耐高温真空袋薄膜,由以下重量份的原料混合后吹出成型:
PA6:55份;
PA66:37份;
弹性体:10份;
热稳定剂:1份;
色母:1份。
一种耐高温真空袋薄膜的制备方法,包括以下步骤:按照上述的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。螺杆塑料挤出机的螺杆温度为268℃,转速为50rpm,挤出加工压力为22MPa;单层吹膜机的温度为275℃,吹胀比为1.7,薄膜厚度为60um,卷曲速度35m/min。
实施例2得到的薄膜的拉伸性能参数如下表2
表2
实施例2的最高耐温温度为225℃
实施例3
一种耐高温真空袋薄膜,由以下重量份的原料混合后吹出成型:
PA6:65份;
PA66:26份;
弹性体:8份;
热稳定剂:0份;
色母:1份。
一种耐高温真空袋薄膜的制备方法,包括以下步骤:按照上述的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。螺杆塑料挤出机的螺杆温度为275℃,转速为80rpm,挤出加工压力为30MPa;单层吹膜机的温度为285℃,吹胀比为2,薄膜厚度为100um,卷曲速度60m/min。
实施例3得到的薄膜的拉伸性能参数如下表3
表3
实施例3的最高耐温温度为227℃
实施例4
一种耐高温真空袋薄膜,由以下重量份的原料混合后吹出成型:
PA6:60份;
PA66:32份;
弹性体:6份;
热稳定剂:1份;
色母:1份。
一种耐高温真空袋薄膜的制备方法,包括以下步骤:按照上述的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。螺杆塑料挤出机的螺杆温度为265℃,转速为55rpm,挤出加工压力为25MPa;单层吹膜机的温度为275℃,吹胀比为1.6,薄膜厚度为75um,卷曲速度35m/min。
实施例4得到的薄膜的拉伸性能参数如下表4
表4
实施例4的最高耐温温度为230℃
由上述各实施例及性能表可得知,本发明的最高使用温度可以达到205℃,满足航空航天领域对于真空袋薄膜所需的强度、模量、耐温性的要求,同时保障了真空袋的气密性需求。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (4)

1.一种耐高温真空袋薄膜,其特征在于,由以下重量份的原料混合后吹出成型:
PA6:50~75份;
PA66:15~40份;
弹性体:1~10份;
热稳定剂:0~4份;
色母:0.2~2份。
2.如权利要求1所述的一种耐高温真空袋薄膜,其特征在于,所述耐高温真空袋薄膜由以下重量份的原料混合后吹出成型:
PA6:60份;
PA66:32份;
弹性体:6份;
热稳定剂:1份;
色母:1份。
3.一种如权利要求1或2所述的耐高温真空袋薄膜的制备方法,其特征在于,包括以下步骤:按照所述权利要求1或2中的组分重量比的配比组分配比出原料,将原料装入螺旋塑料挤出机的料斗中,经过螺旋塑料挤出机塑化熔融,在螺旋塑料挤出机的料筒内部压力及其螺杆向前的推力作用下,熔体状的原料被输送至单层吹膜机的模头,挤出后的管状坯料经过单层吹膜机的口模处吹胀成管状真空袋。
4.如权利要求3所述的一种耐高温真空袋薄膜的制备方法,其特征在于,所述螺杆塑料挤出机的螺杆温度为260~275℃,转速为15~80rpm,挤出加工压力为15~30MPa;所述单层吹膜机的温度为265~285℃,吹胀比为1.4~2,薄膜厚度为30~100um,卷曲速度10~60m/min。
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