CN111452438A - Thermoplastic composite film - Google Patents
Thermoplastic composite film Download PDFInfo
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- CN111452438A CN111452438A CN202010426410.8A CN202010426410A CN111452438A CN 111452438 A CN111452438 A CN 111452438A CN 202010426410 A CN202010426410 A CN 202010426410A CN 111452438 A CN111452438 A CN 111452438A
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- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 32
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 67
- 239000000835 fiber Substances 0.000 claims abstract description 60
- 239000012943 hotmelt Substances 0.000 claims abstract description 41
- 239000011159 matrix material Substances 0.000 claims abstract description 39
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 25
- -1 polyoxymethylene Polymers 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 2
- 239000004697 Polyetherimide Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- 229920002530 polyetherether ketone Polymers 0.000 claims description 2
- 229920001601 polyetherimide Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims 2
- 229920005553 polystyrene-acrylate Polymers 0.000 claims 2
- 229920001955 polyphenylene ether Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 24
- 230000008569 process Effects 0.000 abstract description 23
- 238000001764 infiltration Methods 0.000 abstract description 20
- 230000008595 infiltration Effects 0.000 abstract description 20
- 239000012528 membrane Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000626 liquid-phase infiltration Methods 0.000 abstract description 9
- 230000004927 fusion Effects 0.000 abstract description 4
- 239000012466 permeate Substances 0.000 abstract description 4
- 238000002844 melting Methods 0.000 description 67
- 230000008018 melting Effects 0.000 description 52
- 239000000463 material Substances 0.000 description 15
- 238000013329 compounding Methods 0.000 description 8
- 238000009776 industrial production Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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Classifications
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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
- B32B5/00—Layered 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
- B32B5/02—Layered 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
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- 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
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/022—Mechanical properties
-
- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
-
- 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
- B32B2250/03—3 layers
-
- 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
- B32B2274/00—Thermoplastic elastomer 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to the field of thermoplastic resin matrix membranes, and particularly relates to a thermoplastic composite membrane. The composite film matrix comprises from outside to inside: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer. Wherein the surface mechanical strength layer is formed by a high-melting-point thermoplastic resin matrix; the middle grid supporting layer adopts a hot-melt fiber grid cloth structure, and provides mechanical support for the whole melt infiltration process before the film-shaped composite matrix and the fiber fabric are subjected to hot melt infiltration, so that the integrity of an infiltration passage in the composite film infiltration process is ensured; the hot-melt permeable layer of the core part is made of low-melting-point low-viscosity thermoplastic resin, and can permeate between the fiber fabric monofilaments through high fluidity in the whole fusion permeation process of the composite film and the fiber reinforced fabric, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured.
Description
Technical Field
The invention belongs to the field of thermoplastic resin matrix membranes, and particularly relates to a membrane matrix material consisting of thermoplastic resin with a laminated and laminated composite structure.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The preparation of the thermoplastic composite material at present mainly adopts a key intermediate product, namely thermoplastic prepreg fabric, wherein the thermoplastic prepreg fabric is prepared by the main process of high-performance fiber unidirectional fabric or two-dimensional woven fabric and molten thermoplastic resin under high-temperature pressure load, and the common melt impregnation technology comprises the following steps: screw extrusion injection infiltration compounding, fluidized bed powder compounding or thermoplastic film-shaped substrate lamination pressure compounding. The compounding method of the thermoplastic film-shaped base material and the fiber fabric adopts the hot melting process to compound the thermoplastic film-shaped resin matrix and the fiber, is suitable for continuous production, has higher surface uniformity of the film-shaped resin, and has strong process realizability for the impregnation compounding effect of the formed pre-impregnated fabric. However, the process has high requirements on the film forming property of the resin matrix, and the film forming conditions limit the penetration effect of the resin among fiber fabrics in the hot melting process, so that the fiber interface characteristics of the thermoplastic pre-impregnated fabric of the thermoplastic matrix resin film made of a single material are often poor.
Disclosure of Invention
In order to overcome the above problems, the present invention provides a thermoplastic resin film-like base material of a laminate-bonded composite structure. The composite membrane matrix comprises three parts from outside to inside: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided a thermoplastic composite film comprising: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer; the surface mechanical strength layer, the middle grid supporting layer and the core hot-melt permeation layer are sequentially arranged from outside to inside, the surface mechanical strength layer is formed by a thermoplastic resin matrix, the middle grid supporting layer is formed by hot-melt fiber grid cloth, and the core hot-melt permeation layer is formed by thermoplastic resin.
The composite film matrix comprises from outside to inside: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer. The surface mechanical strength layer is formed by a high-melting-point thermoplastic resin matrix, mainly provides the mechanical strength characteristic of the whole composite membrane structure, and plays the roles of the whole structural continuity of the whole composite membrane and the operability of industrial production; the middle grid supporting layer adopts a hot-melt fiber grid cloth structure, and provides mechanical support for the whole melt infiltration process before the film-shaped composite matrix and the fiber fabric are subjected to hot melt infiltration, so that the integrity of an infiltration passage in the composite film infiltration process is ensured; the hot-melt permeable layer of the core part is made of low-melting-point low-viscosity thermoplastic resin, and can permeate between the fiber fabric monofilaments through high fluidity in the whole fusion permeation process of the composite film and the fiber reinforced fabric, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured.
The invention has the beneficial effects that:
(1) the invention designs a film-shaped base material with a composite structure and various hot-melt permeability characteristics, and has great practical significance for improving the technological advantages of thermoplastic film-shaped base materials.
(2) The composite film matrix comprises from outside to inside: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer. The surface mechanical strength layer is formed by a high-melting-point thermoplastic resin matrix, mainly provides the mechanical strength characteristic of the whole composite membrane structure, and plays the roles of the whole structural continuity of the whole composite membrane and the operability of industrial production; the middle grid supporting layer adopts a hot-melt fiber grid cloth structure, and provides mechanical support for the whole melt infiltration process before the film-shaped composite matrix and the fiber fabric are subjected to hot melt infiltration, so that the integrity of an infiltration passage in the composite film infiltration process is ensured; the hot-melt permeable layer of the core part is made of low-melting-point low-viscosity thermoplastic resin, and can permeate between the fiber fabric monofilaments through high fluidity in the whole fusion permeation process of the composite film and the fiber reinforced fabric, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured.
(3) The invention has simple structure, convenient operation, strong practicability and easy large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of a thermoplastic composite structural film of example 1, wherein the composite film is composed of three parts, a surface mechanical strength layer 1, an intermediate mesh support layer 2 and a core thermal melt permeation layer 3.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
A thermoplastic resin film-like base material of a laminate-laminated composite structure. The composite membrane matrix comprises three parts from outside to inside: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer.
The surface mechanical strength layer of the first layer is formed by a high-melting-point thermoplastic resin matrix, and mainly provides the mechanical strength characteristic of the whole composite membrane structure, so that the continuity of the whole composite membrane structure and the operability of industrial production are realized;
in the present application, the high-melting thermoplastic resin matrix means that the melting point is 200 ℃ or higher.
The middle grid supporting layer of the second layer adopts a hot-melt fiber grid cloth structure, and provides mechanical support for the whole melt infiltration process before the film-shaped composite matrix and the fiber fabric are subjected to hot melt infiltration, so that the integrity of an infiltration passage in the composite film infiltration process is ensured;
the core hot-melt permeable layer of the third layer is made of low-melting-point low-viscosity thermoplastic resin, and can permeate between the fiber fabric monofilaments through high fluidity in the whole fusion permeation process of the composite film and the fiber reinforced fabric, so that the interface bonding effect of the thermoplastic matrix and the fiber fabric is ensured.
The low-melting-point and low-viscosity thermoplastic resin has a melting point of 200 ℃ or lower.
The surface mechanical strength layer can be made of any one of polyester, polyformaldehyde, polyamide, polyphenyl ether, polyether ether ketone, polyphenylene sulfide, polyimide, polyether imide and the like with high melting point.
The surface density of the surface mechanical strength layer film is 5-20g/m2The range can be adjusted arbitrarily according to the design requirement.
The hot melting time of the surface mechanical strength layer is controlled within 10-15s, the hot melting temperature is controlled within 200-290 ℃, the hot melting pressure can be designed according to the type of resin, and the hot melting pressure is controlled within 1.5-3Kgf/m2。
The middle grid supporting layer can be made of hot-melt fiber fabrics made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polymethyl methacrylate and the like, wherein the fiber fabrics can be plain weave, twill, satin or one-way orthogonal lamination.
The surface density of the middle grid supporting layer is 5-10g/m2The range can be adjusted arbitrarily according to the design requirement.
The hot melting time of the middle grid supporting layer is controlled within 5-10s, the hot melting temperature is controlled within 120-160 ℃, the hot melting pressure can be designed according to the type of resin and is controlled within 1.5-3Kgf/m2。
The core hot melt permeable layer film substrate can be prepared from hot melt resin film made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polymethyl methacrylate and the like, and the surface density of the hot melt permeable layer film substrate is 5-10g/m2The range can be adjusted arbitrarily according to the design requirement.
The hot melting time of the core hot melting permeable layer is controlled within 2-5s, the hot melting temperature is controlled within 120-160 ℃, the hot melting pressure can be designed according to the type of resin and controlled within 1.5-3Kgf/m2。
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1
The specific laminated thermoplastic resin film-shaped base material adopts three parts of a surface mechanical strength layer 1, a middle grid support layer 2 and a core part hot melt permeation layer 3, and adopts high-melting-point polyester (American Dupont L W9020FR) to prepare the base material with the surface density of 5g/m2A surface mechanical strength layer 1, wherein the layer 1 provides the mechanical strength of the whole composite membrane, the hot melting time is adjusted to 10s when the membrane-shaped matrix and the fiber fabric are hot-melted and compounded, and the temperature is 200 ℃ and 1.5Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. Plain weave fabric made of polyethylene fibers is adopted to prepare plain weave fabric with surface density of 6g/m2The layer 2 provides mechanical support for the whole melt infiltration process, ensures the integrity of infiltration passages of the composite membrane infiltration process, and adopts the meshWhen the lattice fabric and the fiber fabric are hot-melt compounded, the hot-melt time is adjusted to 10s, and 2Kgf/m is adopted at the temperature of 120 DEG C2The hot-melting pressure of (2) completes the complete hot melting. The surface density of the polyethylene material with low melting point and low viscosity is 6g/m2The core part of the fiber fabric is hot-melt-penetrated by the layer 3, and the layer 3 can penetrate between the fiber fabric monofilaments by high fluidity, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured. When the film-shaped matrix and the fiber fabric are compounded by hot melting, the hot melting time is adjusted to 3s, and 2.5Kgf/m is adopted at the temperature of 125 DEG C2The hot-melting pressure of (2) completes the complete hot melting.
Example 2
The specific laminated thermoplastic resin film-shaped base material adopts three parts of a surface mechanical strength layer 1, a middle grid supporting layer 2 and a core hot-melting permeation layer 3, and adopts polyformaldehyde with a high melting point to prepare a surface density of 7g/m2A surface mechanical strength layer 1, wherein the layer 1 provides the mechanical strength of the whole composite membrane, the hot melting time is adjusted to 10s when the membrane-shaped matrix and the fiber fabric are hot-melted and compounded, and the temperature is 210 ℃ and 2Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. Preparation of 7g/m areal density by 4 layers of unidirectional orthogonal laminated fabric of polypropylene fiber2The middle grid supporting layer 2 is used for providing mechanical support for the whole melting and infiltration process, the integrity of an infiltration passage in the infiltration process of the composite membrane is ensured, when the grid fabric and the fiber fabric are adopted for hot melting and compounding, the hot melting time is adjusted to be 6s, and the temperature is 130 ℃, and 3Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. The surface density of the polystyrene material with low melting point and low viscosity is 6g/m2The core part of the fiber fabric is hot-melt-penetrated by the layer 3, and the layer 3 can penetrate between the fiber fabric monofilaments by high fluidity, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured. When the film-shaped matrix and the fiber fabric are compounded by hot melting, the hot melting time is adjusted to 4s, and 3Kgf/m is adopted at the temperature of 150 DEG C2The hot-melting pressure of (2) completes the complete hot melting.
Example 3
Specifically, a laminated thermoplastic resin film-shaped base material adopts a surface mechanical strength layer 1 and a middle grid supportLayer 2 and core hot-melt permeable layer 3, prepared from high-melting polyamide with an areal density of 20g/m2A surface mechanical strength layer 1, wherein the layer 1 provides the mechanical strength of the whole composite membrane, the hot melting time is adjusted to 15s when the membrane-shaped matrix and the fiber fabric are hot-melted and compounded, and the temperature is 260 ℃ and 3Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. Preparation of satin fabric with polypropylene fiber with surface density of 10g/m2The middle grid supporting layer 2 is used for providing mechanical support for the whole melting and infiltration process, the integrity of an infiltration passage in the infiltration process of the composite membrane is ensured, when the grid fabric and the fiber fabric are adopted for hot melting and compounding, the hot melting time is adjusted to be 8s, and the temperature is 150 ℃ and 2Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. The surface density of the polypropylene material with low melting point and low viscosity is 8g/m2The core part of the fiber fabric is hot-melt-penetrated by the layer 3, and the layer 3 can penetrate between the fiber fabric monofilaments by high fluidity, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured. When the film-shaped matrix and the fiber fabric are compounded by hot melting, the hot melting time is adjusted to 4s, and 3Kgf/m is adopted at 140 deg.C2The hot-melting pressure of (2) completes the complete hot melting.
Example 4
The specific laminated thermoplastic resin film-shaped base material adopts three parts of a surface mechanical strength layer 1, a middle grid supporting layer 2 and a core part hot melt permeation layer 3, and adopts high-melting-point polyphenyl ether to prepare the surface density of 18g/m2A surface mechanical strength layer 1, wherein the layer 1 provides the mechanical strength of the whole composite membrane, the hot melting time is adjusted to 12s when the membrane-shaped matrix and the fiber fabric are hot-melted and compounded, and the temperature is 270 ℃ and 3Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. Twill fabric prepared from polyethylene fibers and having surface density of 6g/m2The middle grid supporting layer 2 is used for providing mechanical support for the whole melting and infiltration process, the integrity of an infiltration passage in the infiltration process of the composite membrane is ensured, when the grid fabric and the fiber fabric are adopted for hot melting and compounding, the hot melting time is adjusted to be 8s, and the temperature is 122 ℃ and 2Kgf/m is adopted2The hot-melting pressure of (2) completes the complete hot melting. Using low melting point low viscosity polymersAreal density of ethylene material 10g/m2The core part of the fiber fabric is hot-melt-penetrated by the layer 3, and the layer 3 can penetrate between the fiber fabric monofilaments by high fluidity, so that the interface combination effect of the thermoplastic matrix and the fiber fabric is ensured. When the film-shaped matrix and the fiber fabric are compounded by hot melting, the hot melting time is adjusted to 3s, and 2.5Kgf/m is adopted at the temperature of 125 DEG C2The hot-melting pressure of (2) completes the complete hot melting.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A thermoplastic composite film, comprising: the surface mechanical strength layer, the middle grid supporting layer and the core hot melt permeation layer; the surface mechanical strength layer, the middle grid supporting layer and the core hot-melt permeation layer are sequentially arranged from outside to inside, the surface mechanical strength layer is formed by a thermoplastic resin matrix, the middle grid supporting layer is formed by hot-melt fiber grid cloth, and the core hot-melt permeation layer is formed by thermoplastic resin.
2. The thermoplastic composite film according to claim 1, wherein the thermoplastic resin matrix is any one of polyester, polyoxymethylene, polyamide, polyphenylene ether, polyether ether ketone, polyphenylene sulfide, polyimide, and polyetherimide.
3. The thermoplastic composite film of claim 1, wherein the areal density of the surface mechanical strength layer film is from 5 to 20g/m2。
4. The thermoplastic composite film according to claim 1, wherein the middle mesh support layer is made of a hot-melt fiber fabric made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, and polymethyl methacrylate.
5. The thermoplastic composite film of claim 4 wherein said hot melt fiber fabric is selected from the group consisting of plain, twill, satin, and unidirectional cross ply.
6. The thermoplastic composite film of claim 1 wherein said intermediate web support layer has an areal density of from 5 to 10g/m2。
7. The thermoplastic composite film according to claim 1, wherein the core hot melt permeable layer film substrate is made of a hot melt resin film made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, and polymethyl methacrylate.
8. The thermoplastic composite film of claim 1 wherein said core hot melt permeable layer has an areal density of from 5 to 10g/m2。
9. The thermoplastic composite film of claim 1 wherein said surface mechanical strength layer is made of polyester, said intermediate mesh support layer is made of a scrim of fibers of polyethylene, and said core hot melt permeable layer is made of polyethylene.
10. The thermoplastic composite film according to claim 1, wherein the surface mechanical strength layer is made of polyoxymethylene, the middle mesh support layer is made of 4-6 layers of unidirectional orthogonal laminated fabrics made of polypropylene fibers, and the core thermal permeation layer is made of polystyrene.
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| CN202010426410.8A CN111452438A (en) | 2020-05-19 | 2020-05-19 | Thermoplastic composite film |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922855A (en) * | 2012-10-24 | 2013-02-13 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing high-tenacity hot-melt prepreg by hot-melt resin matrix |
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| KR20140085662A (en) * | 2012-12-26 | 2014-07-08 | 주식회사 포스코 | Method for preparing reinforced thermoplastic resin film and reinforced thermoplastic resin film prepared using the same |
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