CN108248161A - A kind of method that foam-filled honeycomb prepares liquid condition shaping composite material sandwich - Google Patents

A kind of method that foam-filled honeycomb prepares liquid condition shaping composite material sandwich Download PDF

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Publication number
CN108248161A
CN108248161A CN201711257117.8A CN201711257117A CN108248161A CN 108248161 A CN108248161 A CN 108248161A CN 201711257117 A CN201711257117 A CN 201711257117A CN 108248161 A CN108248161 A CN 108248161A
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China
Prior art keywords
resin
liquid condition
honeycomb
foam
condition shaping
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CN201711257117.8A
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Chinese (zh)
Inventor
李伟东
刘刚
钟翔屿
包建文
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AVIC TECHNOLOGY FOUNDATION ESTABLISHMENT
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AVIC TECHNOLOGY FOUNDATION ESTABLISHMENT
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18—Filling preformed cavities
    • B29C44/186—Filling multiple cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping 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
    • B29C70/36—Shaping 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 impregnating by casting, e.g. vacuum casting
    • 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
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/06—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica 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
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/08—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica comprising asbestos
    • 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 form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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 form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • B32B5/024—Woven fabric
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
    • 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
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/22—Expandable microspheres, e.g. Expancel®
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/28—Glass

Abstract

The invention belongs to technical field of composite preparation, are related to a kind of method that foam-filled honeycomb prepares liquid condition shaping composite material.The present invention is based on liquid condition shaping with using difficulty existing for honeycomb, it is first pre-filled using that can have the phenolic foam material of material and process matching to carry out honeycomb cell with honeycomb and liquid condition shaping resin simultaneously, the foam-filled honeycomb core material for completing precuring is applied to liquid condition shaping technique again, obtains foam-filled honeycomb interlayer composite material prepared by liquid condition shaping technique.Foam-filled honeycomb sandwich is prepared using this method, can effectively solve the problems, such as that honeycomb can not be applied to liquid condition shaping technique, solve the problems, such as that manufacture faces, honeycomb core material is made to be suitable for various liquid condition shaping techniques, there is stronger adaptability.

Description

A kind of method that foam-filled honeycomb prepares liquid condition shaping composite material sandwich
Technical field
The invention belongs to technical field of composite preparation, are related to a kind of foam-filled honeycomb and prepare liquid condition shaping composite wood The method of material.
Background technology
Honeycomb sandwich construction is widely used in the characteristics of its light high-stiffness in the structure of aerospace flight vehicle, mesh Before, honeycomb sandwich composite is mainly manufactured using autoclave forming process, but the manufacture flexibility of autoclave forming process has Limit can not realize application, and it is higher to manufacture cost for the structure of some complex appearances.In recent years, with resin transfer moulding into Type technique (Resin Transfer Molding, RTM) and vacuum assisted resin infiltration moulding process (Vacuum Assisted Resin Infusion, VARI) etc. be representative composite material low cost liquid condition shaping technique (Liquid Composite Molding, LCM) it is rapidly growing, the important means of integration, the manufacture of labyrinth composite product has been increasingly becoming, and The loss of weight efficiency of aircraft can be greatlyd improve, reduce manufacture cost.It is common at present but for liquid condition shaping composite material Honeycomb core material can not realize process compatible.This is because there are the large area of Low viscosity resin in liquid condition shaping technical process Flowing, resin is easily entered in cellular honeycomb cell structure, and causes being significantly increased for composite structure weight, is seriously affected Its weight loss effect.
In order to which for liquid condition shaping technique, honeycomb core material has all been carried out correlative study work both at home and abroad, such as EP0722825A2, for RTM techniques, can prepare corresponding cellular sandwich using glued membrane, prepreg, dry state fabric as assembly Structure, but the technique must use glued membrane, composite material sandwich structure weight be caused to increase, and the packaged type has used not Cured glued membrane, Low viscosity resin is likely to occur inflow Cellular Networks under higher injection pressure in follow-up RTM technical process Situation inside lattice；US20030082339 improves EP0722825A2 to cellular packaging method, first with glued membrane to bee Nest carries out sealing of hole and cures, and then carries out RTM techniques, and this method also uses glued membrane, increases part weight, and be divided into two Step process although increasing process costs, reduces the risk that RTM resins enter honeycomb cell；CN201310717193 is adopted Sealing pores are carried out to honeycomb with prepreg, and the precuring or curing of prepreg are completed in autoclave, then utilize liquid Moulding process prepares honeycomb sandwich composite, and prepreg its matrix resin need to be with being subsequently implanted into used by the process Liquid condition shaping resin has compatibility, this limits the selection of prepreg to a certain extent, and is needed during honeycomb package curing It to be carried out using autoclave preforming, increase process costs.
Invention content
The purpose of the present invention is for the above-mentioned prior art there are the problem of propose that a kind of foam-filled honeycomb prepares liquid The method of forming composite sandwich.The technical solution of the present invention is to fill out the foaming of thermosetting phenolic froth in situ In filling in honeycomb core material cell, fill method is that honeycomb core material is placed in the flat plate mold of an all round closure by (one)； (2) by 100 parts of phenolic resin, 5~20 parts of microcapsule foamers, 1~5 part of surfactant, 5~40 parts of hollow glass micropearls It is mixed and stirred for uniformly, prepared foamed material viscosity is 1Pas~5Pas, and pH value is 7.0 ± 0.5, and blowing temperature is 80 DEG C~150 DEG C, foamed material is cast in honeycomb cell, until foamed material fill up honeycomb cell total volume 80% be Only, mold upper cover is closed tight；(3) mold is integrally placed at curing 2h~4h in 100 DEG C~150 DEG C baking ovens, until sending out microcapsules Infusion expands and resin matrix precuring, obtains the foam-filled honeycomb core material of precuring；(4) it is by design laying that dry state is fine Dimensional fabric placed is transferred in the filled honeycomb core surfaces of precuring, and by assembly in liquid condition shaping mold, using less than Liquid condition shaping resin is injected into the liquid condition shaping mold of sealing by the injection pressure equal to 0.5MPa, obtains liquid condition shaping technique The foam-filled honeycomb sandwich structure composite material of preparation.
The honeycomb core material is contraposition or meta-position aramid fiber paper impregnated phenolic resin, epoxy resin, cyanate ester resin, span Bismaleimide resin, polyimide resin or and its modified resin formed honeycomb.
The foamed material viscosity is 1Pas~5Pas, and pH value is 7.0 ± 0.5, and blowing temperature is 80 DEG C~150 ℃。
The fabric refers to that carbon fibre fabric, glass fabric, quartz textile, basalt fibre are knitted The mixture of object, vegetable fibre fabric or more fabric.
The liquid condition shaping resin refers to unsaturated polyester (UP), vinylite, epoxy resin, cyanate ester resin, span Bismaleimide resin, polyimide resin or its modified resin.
The liquid condition shaping technique is resin transfer moulding, vacuum assisted resin infiltration, resin film infusion, reaction injection The variant of moulding technology or more moulding process.
The present invention has the advantage that and advantageous effect
The present invention is based on liquid condition shaping with using difficult existing for honeycomb, first using can simultaneously with honeycomb and liquid condition shaping tree There is fat the phenolic foam material of material and process matching to carry out foam that is pre-filled, then will completing precuring to honeycomb cell Filled honeycomb core material is applied to liquid condition shaping technique, obtains foam-filled honeycomb interlayer composite wood prepared by liquid condition shaping technique Material.Foam-filled honeycomb sandwich is prepared using this method, can effectively solve honeycomb can not be applied to liquid condition shaping technique Problem solves the problems, such as that manufacture faces, honeycomb core material is made to be suitable for various liquid condition shaping techniques, has stronger adaptability.Separately Outside, due to being filled with foam in honeycomb cell, thus the bonded area of panel and core material is increased, is conducive to improve sandwich Strength and stiffness, can also add in functional component in foam material, realize structure/function integration, carried for structure design For new mentality of designing.
Specific embodiment
Foam in place filling is carried out to honeycomb core material cell using thermosetting phenolic foam.(1) honeycomb core material is placed in one In the flat plate mold of a all round closure；(2) by 100 parts of phenolic resin, 5~20 parts of microcapsule foamers, 1~5 part of surface-active Agent, 5~40 parts of hollow glass micropearls are mixed and stirred for uniformly, and prepared foamed material viscosity is 1Pas~5Pas, pH It is 7.0 ± 0.5 to be worth, and blowing temperature is 80 DEG C~150 DEG C, foamed material is cast in honeycomb cell, until foamed material fills up Until the 80% of honeycomb cell total volume, mold upper cover is closed tight；(3) mold is integrally placed in 100 DEG C~150 DEG C baking ovens Cure 2h~4h, until making microcapsule foamer expansion and resin matrix precuring, obtain the foam-filled honeycomb core material of precuring； (4) by design laying by dry state fabric placed in the filled honeycomb core surfaces of precuring, and assembly is transferred to liquid In state molding die, liquid condition shaping resin is injected into the liquid condition shaping mould of sealing using the injection pressure less than or equal to 0.5MPa In tool, foam-filled honeycomb sandwich structure composite material prepared by liquid condition shaping technique is obtained.
The honeycomb core material is contraposition or meta-position aramid fiber paper impregnated phenolic resin, epoxy resin, cyanate ester resin, span Bismaleimide resin, polyimide resin or and its modified resin formed honeycomb.
The foamed material viscosity is 1Pas~5Pas, and pH value is 7.0 ± 0.5, and blowing temperature is 80 DEG C~150 ℃。
The fabric refers to that carbon fibre fabric, glass fabric, quartz textile, basalt fibre are knitted The mixture of object, vegetable fibre fabric or more fabric.
The liquid condition shaping resin refers to unsaturated polyester (UP), vinylite, epoxy resin, cyanate ester resin, span Bismaleimide resin, polyimide resin or its modified resin.
The liquid condition shaping technique is resin transfer moulding, vacuum assisted resin infiltration, resin film infusion, reaction injection The variant of moulding technology or more moulding process.
Embodiment one
Raw material：Meta-aramid (Nomex) paper impregnated phenolic resin honeycomb, carbon fiber one-way fabric, middle temperature epoxy liquid Moulding resin, foamed material (phenolic resin, microcapsule foamer, surfactant, hollow glass micropearl).
1) according to phenolic resin：Microcapsule foamer：Surfactant：Hollow glass micropearl=100：20：5：30 (weight Than) ratio, above-mentioned each component is stirred, obtains foamed material.Selected surfactant is Tween 80.Institute The starting blowing temperature for obtaining foamed material is 90 DEG C~100 DEG C, and viscosity is less than 2Pas, pH value 6.5.By above-mentioned foamed material After inserting honeycomb cell, cure 4h at 120 DEG C, obtain foam-filled honeycomb core material.Using phenolic aldehyde bubble obtained by the formula and technique The density of foam is 55kg/m3, compressive strength 0.4MPa.
2) foam handled well is filled out from honeycomb core material and each two layers of carbon fiber one-way fabric is put into RTM molding dies up and down In, in temperature epoxy liquid condition shaping resin inject, injection temperature be 50 DEG C, vacuum degree be -0.095MPa, highest injection pressure Not higher than 0.25MPa, mold cools to room temperature demoulding with the furnace after being warming up to 140 DEG C of curing 2h, and it is compound that foam-filled honeycomb is made Material sandwich plate.
Sandwich plate surfacing, using Ultrasonic NDT honeycomb intact, X-ray detection honeycomb core cell Nian Jie with covering Intact, liquid condition shaping resin is not filled up in cellular cell.
Embodiment two
Raw material：Meta-aramid (Nomex) paper impregnated phenolic resin honeycomb, carbon fiber plain cloth, high-temp epoxy liquid Moulding resin, foamed material (phenolic resin, microcapsule foamer, surfactant, hollow glass micropearl).
1) according to phenolic resin：Microcapsule foamer：Surfactant：Hollow glass micropearl=100：10：5：40 (weight Than) ratio, above-mentioned each component is stirred, obtains foamed material.Selected surfactant is Tween 80.Institute The starting blowing temperature for obtaining foamed material is 90 DEG C~100 DEG C, and viscosity is less than 2Pas, pH value 6.9.By above-mentioned foamed material After inserting honeycomb cell, cure 4h at 120 DEG C, obtain foam-filled honeycomb core material.Using phenolic aldehyde bubble obtained by the formula and technique The density of foam is 85kg/m3, compressive strength 0.7MPa.
2) foam handled well is filled out from honeycomb core material and each two layers of carbon fiber plain cloth is put into RTM molding dies up and down In, using high-temp epoxy liquid condition shaping resin inject, injection temperature be 70 DEG C, vacuum degree be -0.095MPa, highest injection pressure Not higher than 0.35MPa, mold cools to room temperature demoulding with the furnace after being warming up to 180 DEG C of curing 2h, and it is compound that foam-filled honeycomb is made Material sandwich plate.
Sandwich plate surfacing, using Ultrasonic NDT honeycomb intact, X-ray detection honeycomb core cell Nian Jie with covering Intact, liquid condition shaping resin is not filled up in cellular cell.
Embodiment three：
Raw material：P-aramid fiber (Nomex) paper impregnates bimaleimide resin honeycomb, fiberglass scrim, double (phenolic resin, microcapsule foamer, surfactant, hollow glass are micro- for maleimide liquid condition shaping resin, foamed material Pearl).
1) according to phenolic resin：Microcapsule foamer：Surfactant：Hollow glass micropearl=100：10：5：20 (weight Than) ratio, above-mentioned each component is stirred, obtains foamed material.Selected surfactant is (poly- for BD3088 Ether modified organopolysiloxane).The starting blowing temperature of gained foamed material is 110 DEG C~120 DEG C, and viscosity is less than 3Pas, PH value is 6.6.After above-mentioned foamed material is inserted honeycomb cell, cure 4h at 120 DEG C, obtain foam-filled honeycomb core material.It adopts The density of phenol formaldehyde foam is 90kg/m obtained by the formula and technique3, compressive strength 0.9MPa.
2) foam handled well is filled out from honeycomb core material and each layer glass fiber plain cloth is put into RTM shaping moulds up and down In tool, using bismaleimide liquid condition shaping resin inject, injection temperature be 110 DEG C, vacuum degree be -0.095MPa, highest Injection pressure is not higher than 0.40Mpa, and mold cools to room temperature demoulding with the furnace after being warming up to 200 DEG C of curing 5h, is made foam-filled Cellular composite material sandwich plate.
Sandwich plate surfacing, using Ultrasonic NDT honeycomb intact, X-ray detection honeycomb core cell Nian Jie with covering Intact, liquid condition shaping resin is not filled up in cellular cell.
Example IV
Raw material：P-aramid fiber (Nomex) paper impregnates bimaleimide resin honeycomb, quartz fibre plain cloth, double (phenolic resin, microcapsule foamer, surfactant, hollow glass are micro- for maleimide liquid condition shaping resin, foamed material Pearl).
1) according to phenolic resin：Microcapsule foamer：Surfactant：Hollow glass micropearl=100：5：3：10 (weight Than) ratio, above-mentioned each component is stirred, obtains foamed material.Selected surfactant is (poly- for BD3088 Ether modified organopolysiloxane).The starting blowing temperature of gained foamed material is 90 DEG C~100 DEG C, and viscosity is less than 3Pas, pH Be worth is 6.7.After above-mentioned foamed material is inserted honeycomb cell, cure 4h at 120 DEG C, obtain foam-filled honeycomb core material.Using The density of phenol formaldehyde foam obtained by the formula and technique is 150kg/m3, compressive strength 1.2MPa.
2) by the core material handled well and up and down, each two layers of quartz fibre plain cloth is put into RTM molding dies, using double Maleimide liquid condition shaping resin is injected, and injection temperature is 110 DEG C, and vacuum degree is -0.095MPa, and highest injection pressure is not high In 0.40MPa, mold cools to room temperature demoulding with the furnace after being warming up to 200 DEG C of curing 5h, and foam-filled honeycomb composite material is made Sandwich plate.Sandwich plate surfacing, using Ultrasonic NDT honeycomb intact, X-ray detection honeycomb core cell Nian Jie with covering Intact, liquid condition shaping resin is not filled up in cellular cell.

Claims (6)

1. a kind of method that foam-filled honeycomb prepares liquid condition shaping composite material sandwich, it is characterized in that, by thermosetting property phenol Aldehyde froth in situ it is foam filled in honeycomb core material cell in, fill method is that honeycomb core material is placed in a surrounding by (one) In the flat plate mold of closing；(2) by 100 parts of phenolic resin, 5~20 parts of microcapsule foamers, 1~5 part of surfactant, 5~ 40 parts of hollow glass micropearls are mixed and stirred for uniformly, prepared foamed material viscosity be 1Pas~5Pas, pH value 7.0 ± 0.5, blowing temperature is 80 DEG C~150 DEG C, foamed material is cast in honeycomb cell, until foamed material fills up honeycomb cell Until the 80% of total volume, mold upper cover is closed tight；(3) by mold be integrally placed in 100 DEG C~150 DEG C baking ovens cure 2h~ 4h until making microcapsule foamer expansion and resin matrix precuring, obtains the foam-filled honeycomb core material of precuring；(4) by setting Dry state fabric placed is transferred to liquid condition shaping mould by meter laying in the filled honeycomb core surfaces of precuring, and by assembly In tool, liquid condition shaping resin is injected into the liquid condition shaping mold of sealing using the injection pressure less than or equal to 0.5MPa, is obtained Obtain foam-filled honeycomb sandwich structure composite material prepared by liquid condition shaping technique.
2. the method that a kind of foam-filled honeycomb according to claim 1 prepares liquid condition shaping composite material sandwich, It is characterized in that the honeycomb core material is contraposition or meta-position aramid fiber paper impregnated phenolic resin, epoxy resin, cyanate ester resin, double Maleimide resin, polyimide resin or and its modified resin formed honeycomb.
3. the method that a kind of foam-filled honeycomb according to claim 1 prepares liquid condition shaping composite material sandwich, It is characterized in that the foamed material viscosity is 1Pas~5Pas, pH value is 7.0 ± 0.5, and blowing temperature is 80 DEG C~150 ℃。
4. the method that a kind of foam-filled honeycomb according to claim 1 prepares liquid condition shaping composite material sandwich, It is characterized in that the fabric refers to that carbon fibre fabric, glass fabric, quartz textile, basalt fibre are knitted The mixture of object, vegetable fibre fabric or more fabric.
5. the method that a kind of foam-filled honeycomb according to claim 1 prepares liquid condition shaping composite material sandwich, It is characterized in that the liquid condition shaping resin refers to unsaturated polyester (UP), vinylite, epoxy resin, cyanate ester resin, span Bismaleimide resin, polyimide resin or its modified resin.
6. the method that a kind of foam-filled honeycomb according to claim 1 prepares liquid condition shaping composite material sandwich, It is characterized in that the liquid condition shaping technique is resin transfer moulding, vacuum assisted resin infiltration, resin film infusion, reacts note Penetrate the variant of moulding technology or more moulding process.
CN201711257117.8A 2017-12-01 2017-12-01 A kind of method that foam-filled honeycomb prepares liquid condition shaping composite material sandwich Pending CN108248161A (en)

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CN113829678A (en) * 2021-09-27 2021-12-24 上海骏珲新材料科技有限公司 Light sound-insulation composite board and preparation method thereof
CN113954285A (en) * 2021-11-23 2022-01-21 湖南大学 Filling process of foamed aluminum with irregular light high-strength structure
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CN109159518A (en) * 2018-08-28 2019-01-08 丹阳丹金航空材料科技有限公司 A kind of aviation aircraft composite plate
CN109721762A (en) * 2018-12-17 2019-05-07 航天材料及工艺研究所 A kind of anti-heat-insulation composite material of resin base ablation and preparation method thereof
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CN110654098B (en) * 2019-09-12 2022-05-24 重庆泛锐科技有限公司 Method for preparing sandwich layer for composite sandwich plate by using electrostatic spraying method
CN110654098A (en) * 2019-09-12 2020-01-07 河南泛锐复合材料研究院有限公司 Method for preparing sandwich layer for composite sandwich plate by using electrostatic spraying method
CN110591358A (en) * 2019-09-23 2019-12-20 中国航空工业集团公司基础技术研究院 Preparation method of light high-temperature-resistant polyimide glass bead core material
CN112126114A (en) * 2020-08-24 2020-12-25 航天特种材料及工艺技术研究所 Wave-absorbing honeycomb/hard foam composite material and preparation method thereof
CN112829161A (en) * 2021-01-07 2021-05-25 中国航空制造技术研究院 Foaming glue filling method for composite material honeycomb sandwich structure
CN113651630A (en) * 2021-08-05 2021-11-16 北京理工大学 Carbon/carbon honeycomb sandwich structure for high-temperature heat insulation and preparation method thereof
CN113829678A (en) * 2021-09-27 2021-12-24 上海骏珲新材料科技有限公司 Light sound-insulation composite board and preparation method thereof
CN113736216A (en) * 2021-09-27 2021-12-03 上海骏珲新材料科技有限公司 Lightweight composite board for multi-purpose equipment and preparation method thereof
CN113736216B (en) * 2021-09-27 2024-05-07 上海骏珲新材料科技有限公司 Light composite board for amphibious equipment and preparation method thereof
CN113954285A (en) * 2021-11-23 2022-01-21 湖南大学 Filling process of foamed aluminum with irregular light high-strength structure
CN114248466A (en) * 2021-12-23 2022-03-29 中国人民解放军国防科技大学 Preparation method of composite material bearing plate and composite material bearing plate

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