CN108582898A - 改良的高韧性pet复合膜布 - Google Patents

改良的高韧性pet复合膜布 Download PDF

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CN108582898A
CN108582898A CN201810262261.9A CN201810262261A CN108582898A CN 108582898 A CN108582898 A CN 108582898A CN 201810262261 A CN201810262261 A CN 201810262261A CN 108582898 A CN108582898 A CN 108582898A
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pet
layer
insulation film
layers
high tenacity
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张�林
肖文学
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Sichuan Coxin Insulating Material Co Ltd
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Sichuan Coxin Insulating Material Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered 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
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness

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Abstract

本发明公开了改良的高韧性PET复合膜布，包括三层PET基膜、两层保温膜，两层保温膜将三层PET基膜间隔设置，位于两层保温膜中间层的PET基膜沿其径向叠压成折扇层，所述每层保温膜上均开有若干个气孔，三层PET基膜与两层保温膜通过电纺和热冲压一体成型。本发明具有抗低温效果好，韧性高，使用寿命长等优点。

Description

改良的高韧性PET复合膜布
技术领域
本发明涉及复合材料技术领域，具体涉及改良的高韧性PET复合膜布。
背景技术
PET膜是由多层PET薄膜涂以粘合剂复合而成的柔软复合材料，具有较好的介电性能、击穿阻力、低收缩性、低吸湿性和高的耐热性能。该产品广泛应用于工业、民用、农业等许多领域中，电子行业对其要求更高，要求其具有更高的硬度，更耐磨损、耐刮伤，抗污性更强。但是，现有的PET膜的韧性较差，随着使用时间的增长，其受到外力作用以及超低温作用容易出现开裂脆化现象，影响其使用寿命。
发明内容
本发明的目的在于提供改良的高韧性PET复合膜布，克服以上技术问题，可延长PET复合膜的使用寿命。
本发明通过下述技术方案实现：
改良的高韧性PET复合膜布，包括三层PET基膜、两层保温膜，两层保温膜将三层PET基膜间隔设置，位于两层保温膜中间层的PET基膜沿其径向叠压成折扇层，所述每层保温膜上均开有若干个气孔，三层PET基膜与两层保温膜通过电纺和热冲压一体成型。进一步的，针对以上技术问题，本发明设计了一种新型的PET复合膜，发明点如下：1、首先在传统的多层PET基膜形成的复合结构中增加两层保温膜，并将中间层PET基膜叠压成折扇层，折扇层结构可提高PET复合膜的强度，其拉伸形变更大，韧性更强；保温膜可保护折扇层结构的PET基膜不易在低温环境下脆化，延长PET复合膜的使用寿命。2、通过电纺和热冲压的技术手段将多层结构直接形成一体化结构，避免了多层的层次性结构，进一步避免了一般复合性结构的成层性，极大的延长了实际的使用寿命。另外，在每层保温膜上均开有若干个气孔，这样可保证PET基膜与两层保温膜在热冲压一体成型过程中可以充分将内部空气排尽，使得各层膜之间贴合的更好，也可延长整个PET复合膜的使用寿命。
优选的，所述中间层被叠压的PET基膜的厚度为外层PET基膜厚度的1.5～1.8倍。现有技术中的PET复合膜为了保证其硬度，一般由多层基膜贴合而成，厚度较厚。而本发明将中间层的PET基膜叠压成折扇层结构后，不仅增加了其硬度，还以较薄的厚度增加了PET复合膜的韧性。发明人研究发现，将折扇层的厚度设置在外层PET基膜厚度的1.5～1.8倍之间，即可取得较好的硬度，其韦式硬度就已经趋于稳定，如再增加基膜厚度只会造成材料浪费，不经济实用。
优选的，所述气孔的孔径为亚微米级。
位于外侧的两层PET基膜的外表面紧贴有黑钛吸热膜。进一步的，黑钛吸热膜是现有技术中采用纳米复合金属高选择性吸热技术，然后经过等离子钝化处理、强磁高速涡流、高压静电工艺后成型的一种薄膜，具有强耐候性、高选择性、强耐盐雾性，对太阳光的吸收效果极好，能强化PET复合膜的吸热效果，进一步使得内部粘黏的胶体以及PET基膜不易在超低温环境下发生分子质变而变形脆化。
本发明与现有技术相比，具有如下的优点和有益效果：
1、本发明改良的高韧性PET复合膜布，在传统的多层PET基膜形成的复合结构中增加两层保温膜，并将中间层PET基膜叠压成折扇层，折扇层结构可提高PET复合膜的强度，其拉伸形变更大，韧性更强；保温膜可保护折扇层结构的PET基膜不易在低温环境下脆化，延长PET复合膜的使用寿命；
2、本发明改良的高韧性PET复合膜布，通过电纺和热冲压的技术手段将多层结构直接形成一体化结构，避免了多层的层次性结构，进一步避免了一般复合性结构的成层性，极大的延长了实际的使用寿命。
附图说明
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，并不构成对本发明实施例的限定。在附图中：
图1为本发明结构示意图。
附图中标记及对应的零部件名称：
1-保温膜，2-折扇层，3-气孔，4-PET基膜，5-黑钛吸热膜。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白，下面结合实施例和附图，对本发明作进一步的详细说明，本发明的示意性实施方式及其说明仅用于解释本发明，并不作为对本发明的限定。
实施例1
如图1所示，本发明改良的高韧性PET复合膜布，包括三层PET基膜4、两层保温膜1，两层保温膜1将三层PET基膜4间隔设置，位于两层保温膜1中间层的PET基膜4沿其径向叠压成折扇层2，所述每层保温膜1上均开有若干个气孔3，三层PET基膜4与两层保温膜1通过电纺和热冲压一体成型。位于外侧的两层PET基膜4的外表面紧贴有黑钛吸热膜5。所述气孔3的孔径为亚微米级。通过以上结构大大提高了PET复合膜的韧性，其拉伸形变更大，可保护折扇层结构的PET基膜不易在低温环境下脆化，延长PET复合膜的使用寿命。
实施例2
如图1所示，在实施例1的基础上，所述中间层被叠压的PET基膜4的厚度为外层PET基膜4厚度的1.5～1.8倍。将中间层的PET基膜叠压成折扇层结构后，不仅增加了其硬度，还以较薄的厚度增加了PET复合膜的韧性，在以上厚度比值范围中可取得较好的硬度，其韦式硬度就已经趋于稳定，如再增加基膜厚度只会造成材料浪费，不经济实用。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (4)

1.改良的高韧性PET复合膜布，其特征在于，包括三层PET基膜(4)、两层保温膜(1)，两层保温膜(1)将三层PET基膜(4)间隔设置，位于两层保温膜(1)中间层的PET基膜(4)沿其径向叠压成折扇层(2)，所述每层保温膜(1)上均开有若干个气孔(3)，三层PET基膜(4)与两层保温膜(1)通过电纺和热冲压一体成型。
2.根据权利要求1所述的改良的高韧性PET复合膜布，其特征在于，所述中间层被叠压的PET基膜(4)的厚度为外层PET基膜(4)厚度的1.5～1.8倍。
3.根据权利要求1所述的改良的高韧性PET复合膜布，其特征在于，所述气孔(3)的孔径为亚微米级。
4.根据权利要求1所述的改良的高韧性PET复合膜布，其特征在于，位于外侧的两层PET基膜(4)的外表面紧贴有黑钛吸热膜(5)。
CN201810262261.9A 2018-03-28 2018-03-28 改良的高韧性pet复合膜布 Withdrawn CN108582898A (zh)

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