CN114055881A - 一种复合聚酰亚胺膜及其制备方法 - Google Patents

一种复合聚酰亚胺膜及其制备方法 Download PDF

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CN114055881A
CN114055881A CN202111650704.XA CN202111650704A CN114055881A CN 114055881 A CN114055881 A CN 114055881A CN 202111650704 A CN202111650704 A CN 202111650704A CN 114055881 A CN114055881 A CN 114055881A
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polyimide film
epoxy resin
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赵广昊
赵继辉
许建军
钟华春
朱甜甜
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Suzhou Kymler Insulation Materials Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B29C70/34Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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    • B32LAYERED PRODUCTS
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
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    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/20Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract

本发明公开了一种复合聚酰亚胺膜及其制备方法,将球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖玻璃布,热定型后热压,得到复合聚酰亚胺膜。针对聚酰亚胺薄膜/玻璃布复合产品应用广泛的现状,为了解决市售胶黏剂对复合材料性能提升不佳的问题,本发明采用自配的胶黏剂,得到的复合聚酰亚胺膜拉伸强度有所提升,且绝缘性能比如耐电压符合应用要求。

Description

一种复合聚酰亚胺膜及其制备方法
技术领域
本发明属于高分子复合材料技术,具体涉及一种复合聚酰亚胺膜及其制备方法。
背景技术
作为具有优异性能的聚酰亚胺材料,其薄膜产品应用广泛,纯聚酰胺薄膜经过复合改性,可得到性能变化的产品,各有不同。现有技术公开了一种高韧性聚酰亚胺材料及其制备方法,将粘接材料涂覆于聚酰亚胺薄膜表面,90℃加热5~8分钟,得到带有粘接层的聚酰亚胺薄膜;将粘接材料涂覆于增韧层表面,60℃加热10~15分钟,得到带有粘接层的增韧层;然后复合带有粘接层的聚酰亚胺薄膜与带有粘接层的增韧层,热压得到高韧性聚酰亚胺材料;所述粘接层位于聚酰亚胺薄膜与增韧层之间;该方法成本较高。聚酰亚胺显现出优良的机械性能和电气性能,,已被证实是合格的绝缘材料,现有技术带采用改性环氧树脂为胶粘剂,无碱玻璃布浸渍树脂后先后分别复合粉云母纸和聚酰亚胺薄膜,经烘焙、收卷、分切、包装而成一种电机主绝缘材料,充分利用这一性能优异的绝缘材料,现有技术将玻璃布和聚酰亚胺薄膜进行复合,确保复合物的耐高温特性,但是由于两层界面作用力不佳,导致拉伸性能还需改善。
发明内容
本发明在聚酰亚胺薄膜的基础上,为了提高对薄膜的粘结作用,,利用改性粘接剂进行复合,通过配伍合理的分子改性物,提高了聚酰亚胺与玻璃布的复合效果,同时保持整个材料的耐热性,拓展了聚酰亚胺的应用。
本发明采用如下技术方案:
一种复合聚酰亚胺膜,由聚酰亚胺薄膜、粘结层、玻璃布层组成,粘结层位于聚酰亚胺薄膜、玻璃布层之间;所述粘结层的制备原料包括球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺。进一步的,粘结层的制备原料还包括二月桂酸二丁基锡。
本发明中,将市售磷酸铝加入球磨机中,500~600rpm球磨5~10小时,得到球磨磷酸铝。粉体改性是用物理或化学的方法对颗粒表面进行处理,使之达到充分的分散,以最大限度的发挥粉体自身的优异性能以及与其他物质的界面作用;如果粉体与聚合物之间存在弱界面效应,相当于在基体中存在很多孔隙,对聚合物的力学性能、耐热性能等产生不利影响。本发明采用磷酸铝作为填料可以起到无机阻燃的作用,也可以起到提高粘接剂对玻璃布界面作用的效果,另外在拉伸过程中,无机粉体也可以具有提升作用。
本发明中,将球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖玻璃布,热定型后热压,得到复合聚酰亚胺膜。优选的,球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为(5~8)∶(30~40)∶(40~50)∶(10~20)∶(30~40)∶(0.1~0.15)。热定型的温度为110℃~120℃,时间为10~15分钟;热压的温度为140℃~160℃,时间为1~3小时,压力为0.5~1.0MPa,优选的,热压的温度为140℃~150℃,时间为1~1.5小时,压力为0.5~0.8MPa。
在电力系统中经常因为电气设备的绝缘破坏而产生事故,可靠性是绝缘材料为电气设备安全运行的关键要素,另外电器设备在使用过程中不可避免地受到各种因素的影响,而绝缘材料对此极为敏感,因此研究和开发新的绝缘材料时,耐热、电性能尽量保持是电工绝缘领域研究的重点。本发明在双酚A环氧基础上配入有机硅环氧以及脂环族环氧,保证了粘接剂的热性能,且依然提供有效的粘接效应,磷酸铝的加入与环氧树脂配合发挥两层界面作用提高的效果,为复合材料拉伸强度的提升提供保障。
具体实施方式
本发明将球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖玻璃布,热定型后热压,得到复合聚酰亚胺膜。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为(5~8)∶(30~40)∶(40~50)∶(10~20)∶(30~40)∶(0.1~0.15)。优选的,球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为(5~8)∶(35~40)∶(45~50)∶(10~15)∶(30~35)∶(0.1~0.15)。本发明的原料都为现有产品,具体制备操作以及测试都为常规技术。将市售磷酸铝加入球磨机中,600rpm球磨8小时,得到球磨磷酸铝。将薄膜裁成样条,测量样条的厚度d和宽度m,在电子万能材料试验机上测其最大承受力F,通过计算式F/d*m可计算得到薄膜的拉伸强度(MPa)。以下实验中,聚酰亚胺薄膜,均苯型,25微米,拉伸强度72MPa。以目前市售耐高温环氧胶黏剂粘接聚酰亚胺薄膜与玻璃布,得到复合聚酰亚胺膜,拉伸强度85MPa,但是耐击穿电压性能较实施例产品低。
实施例一
将球磨磷酸铝、环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、脂环族环氧树脂(TTA21S)、聚酰胺300、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度93MPa。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为6∶35∶50∶15∶30∶0.1,环氧树脂总重为10Kg;热定型的温度为110℃,时间为15分钟,热压的温度为150℃,时间为1小时,压力为0.6MPa。
实施例二
将球磨磷酸铝、环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、脂环族环氧树脂(TTA21S)、聚酰胺300、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度90MPa。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为6∶35∶50∶15∶30∶0.1,环氧树脂总重为10Kg;热定型的温度为120℃,时间为10分钟,热压的温度为140℃,时间为1.5小时,压力为0.5MPa。
实施例三
将球磨磷酸铝、环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、脂环族环氧树脂(TTA21S)、聚酰胺300、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度88MPa。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为7∶40∶50∶10∶35∶0.1,环氧树脂总重为10Kg;热定型的温度为110℃,时间为15分钟,热压的温度为150℃,时间为1小时,压力为0.5MPa。
对比例一
将环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、脂环族环氧树脂(TTA21S)、聚酰胺300、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度81MPa。环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为35∶50∶15∶30∶0.1,环氧树脂总重为10Kg;热定型的温度为110℃,时间为15分钟,热压的温度为150℃,时间为1小时,压力为0.6MPa。
对比例二
将球磨磷酸铝、环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、聚酰胺300、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度85MPa,耐击穿电压性能较实施例产品低。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为6∶45∶55∶30∶0.1,环氧树脂总重为10Kg;热定型的温度为110℃,时间为15分钟,热压的温度为150℃,时间为1小时,压力为0.6MPa。
对比例三
将球磨磷酸铝、环氧有机硅树脂(SMH-30)、双酚A环氧树脂(SM618)、脂环族环氧树脂(TTA21S)、脂环胺SM208、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖30微米无碱玻璃布,热定型后热压,得到复合聚酰亚胺膜,拉伸强度79MPa。球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、脂环胺、二月桂酸二丁基锡的质量比为6∶35∶50∶15∶30∶0.1,环氧树脂总重为10Kg;热定型的温度为110℃,时间为15分钟,热压的温度为150℃,时间为1小时,压力为0.6MPa。
针对玻璃布与高分子薄膜比如聚酰亚胺薄膜或者少胶云母带,现有技术有的采用浸渍玻璃布的方法,好处为胶液可渗入玻璃布中,缺点是生产上多一道工序且对胶的粘度有较高要求,针对单层复合,也有厂家使用涂胶的方式,此时胶层对复合材料的性能有重要影响,最好在保持绝缘性能符合标准的基础上,复合材料的力学性能也有提高。本发明采用自配的胶黏剂,得到的复合聚酰亚胺膜拉伸强度有所提升,且绝缘性能比如耐电压符合应用要求。

Claims (10)

1.一种复合聚酰亚胺膜,由聚酰亚胺薄膜、粘结层、玻璃布层组成,粘结层位于聚酰亚胺薄膜、玻璃布层之间,其特征在于,所述粘结层的制备原料包括球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺。
2.根据权利要求1所述复合聚酰亚胺膜,其特征在于,粘结层的制备原料还包括二月桂酸二丁基锡。
3.根据权利要求1所述复合聚酰亚胺膜,其特征在于,将磷酸铝加入球磨机中,300~600rpm球磨5~10小时,得到球磨磷酸铝。
4.根据权利要求1所述复合聚酰亚胺膜,其特征在于,将球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖玻璃布,热定型后热压,得到复合聚酰亚胺膜。
5.根据权利要求4所述复合聚酰亚胺膜,其特征在于,球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡的质量比为(5~8)∶(30~40)∶(40~50)∶(10~20)∶(30~40)∶(0.1~0.15)。
6.根据权利要求4所述复合聚酰亚胺膜,其特征在于,热定型的温度为110℃~120℃,时间为10~15分钟;热压的温度为140℃~160℃,时间为1~3小时,压力为0.5~1.0MPa。
7.根据权利要求6所述复合聚酰亚胺膜,其特征在于,热压的温度为140℃~150℃,时间为1~1.5小时,压力为0.5~0.8MPa。
8.权利要求1所述复合聚酰亚胺膜的制备方法,其特征在于,将球磨磷酸铝、环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂、聚酰胺、二月桂酸二丁基锡混合,得到粘结剂;然后将粘结剂涂在聚酰亚胺薄膜上,再覆盖玻璃布,热定型后热压,得到复合聚酰亚胺膜。
9.根据权利要求8所述复合聚酰亚胺膜的制备方法,其特征在于,环氧有机硅树脂、双酚A环氧树脂、脂环族环氧树脂都以液体形式存在。
10.权利要求1所述复合聚酰亚胺膜在制备绝缘薄膜材料中的应用。
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