CN103342015B - Timber strengthen textile composite board and radar, laser, sonar, infrared entirely stealthy in application - Google Patents
Timber strengthen textile composite board and radar, laser, sonar, infrared entirely stealthy in application Download PDFInfo
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- CN103342015B CN103342015B CN201310222105.7A CN201310222105A CN103342015B CN 103342015 B CN103342015 B CN 103342015B CN 201310222105 A CN201310222105 A CN 201310222105A CN 103342015 B CN103342015 B CN 103342015B
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Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of composite plate and strengthen mixed goods and preparation method thereof, comprise bottom and above bottom, set gradually elasticity layer, packed layer and protective layer.Described bottom is used for being fixedly linked with timber; be provided with elastic layer above described bottom, as stress absorbing layer, above described elastic layer, be provided with packed layer; adopt foamed plastics and basalt Woven glass cloth to fill, described protective layer adopts basalt Woven glass cloth.By Fiber strength, yarn braiding, fabric is sewed up, composite curing is shaping is prepared.Technical solution of the present invention overcomes the deficiencies in the prior art, solves the various defects that traditional timber strengthens fabric existence, improves timber further and strengthens fabric construction.
Description
Technical field
The invention belongs to composite and preparation method thereof, more particularly, relate to timber and strengthen mixed goods and composite material and preparation method thereof thereof.
Background technology
Metal, cement, timber, glass, macromolecular material are current five large-engineering materials, and wherein timber is uniquely nexhaustible renewable resource.The advantage of timber is that the ratio of strength to weight is high, environmental protection, shock-resistant, processability good, and shortcoming is that intensity is low, inflammable, Yi Chao, perishable.
Traditional project composite wooden material adopts FRP(FiberReinforcedPlastic, resin base fiber reinforced composite material) plate enhancing, the fine single-phase cloth of the glass of general employing Single Fiber kind, basalt fibre or carbon carries out multiple-layer stacked, then formed by extrusion and tension, thus the heat curing-type FRP that acquisition take resin as matrix strengthens sheet material (Chinese patent " basalt continuous fibre enhancement resin composite material and manufacture method thereof ", application number 2007101188874, June 13 2007 applying date, publication date on August 6th, 2008).The glass that traditional timber FRP plate adopts, basalt fibre, carbon fibre are all inorganic material, good compound interface is lacked with the organic material such as timber, resin, failure test finds, this type of FRP plate enhancement engineering composite wooden material, first strengthen in fabric in FRP plate and splitting occurs, then cause overall fracture.That is, the anti-splitting performance of FRP plate, has become the intensity bottleneck of engineering fuzzy sets.
String is nexhaustible natural resources, and what match therewith is igneous rock resource.Igneous rock is solidified by earth lava and forms, and accounts for 95% of earth rock.Igneous rock is divided into the large class of acidity, neutrality, alkalescence, hyperalkaline four, and kind more than 700, basalt is a kind of common alkaline igneous rocks.Nineteen twenty-two, Rittler proposes the method (US4199336) utilizing basalt to prepare fiber.Fiber belongs to ceramic material, simultaneously containing glass and crystal, is therefore named as basalt glass ceramic fibre (Basaltglass-ceramicfiber), is called for short basalt fibre.2009, Liu Huawu etc. solved the devitrification problem (ZL200910228295.7) in Basalt melt forming process, produce not crystalliferous black basalt glass fibers, were called for short basalt glass.
Summary of the invention
The object of the invention is to solve traditional timber and strengthen the various defects that fabric exists, to improve timber further and strengthen fabric construction, a kind of comprehensive wood performance that improves is provided, mixed goods enhancing FRP and preparation method thereof.In order to improve engineering fuzzy sets (Engineeredwoodcomposites) performance further, the present invention adopts to knit and closes or/and sew up as overall multiple fibre blend fabrics, strengthens sheet material combined shaping mode carried out a series of improvement to timber Special reinforcing fabric structure and heat curing-type FRP thereof.
Technical purpose of the present invention is achieved by following technical proposals:
Timber, with strengthening fabric, comprises the bottom be fixedly linked with timber, sets gradually elasticity layer, packed layer and protective layer above described bottom.
Described bottom, for being fixedly linked with timber, adopting vegetable fibre fabric as timber laminating layer, utilizing and go deep into the resin of wood-fibred and flaxen fiber micropore, producing " glue nail " effect, to strengthen the binding strength between FRP plate and solid wood board, wood-fiber board;
Be provided with elastic layer above described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb the deformational stress that timber produces with humidity change;
Be provided with packed layer above described elastic layer, adopt common glass, basalt fibre, basalt Woven glass cloth or/and foamed plastics is filled;
Be provided with protective layer above described packed layer, described protective layer adopts basalt Woven glass cloth.
At timber with strengthening in fabric, using and adopting black basalt Woven glass cloth as the extexine strengthening fabric, playing fire-retardant, anticorrosion, moistureproof object, particularly prevent FRP plate matrix illumination ageing.Chinese invention patent " a kind of manufacture method of igneous rock crystal glass material " (November 16 2009 applying date, application number 2009102282957, publication date on June 9th, 2010) solve devitrification problem in Basalt melt forming process, produce not crystalliferous black basalt glass fibers, be called for short basalt glass, its theoretical ratio of strength to weight is 240-300 times of common iron and steel (150MPa), heavy antisepsis, wear-resisting (Mohs' hardness 7-8), high temperature resistant (softening point 910 degree), resistance to ultralow temperature (-270 degree), insulation, radar invisible (wave transparent, trace inhales ripple), sonar stealthy (sound absorption), infrared stealth (thermal insulation), shading (see table 1).Black basalt glass because fire prevention, insulation, shading, wear-resisting, high-strength, heavy antisepsis, as the extexine of multilayer integral fabric, the effect of fire prevention, protection against the tide, anticorrosion and anti-light illumination aging can be played.
Table 1, basalt glass and middle alkali glass Performance comparision
| Detection of content | Basalt glass | Common middle alkali glass |
| Hardness | 7-8 | 5.5-6 |
| Elastic modulus G Pa | 93 | 72-78 |
| Heat conduction w/ (m.k) | 0.03-0.038 | 0.034-0.040 |
| Softening point ° C | 910 | 500-700 |
| Low-temperature working temperature | -270 | -60 |
| Sound absorption | 90-99% | 80-93% |
| Volume resistance | 0.4-3.8×10 12 | 1×10 11 |
| 2mol/L caustic soda boils 3h | Mass loss 2% | Mass loss 39% |
| 2mol/L hydrochloric acid boils 3h | Mass loss 5% | Mass loss 6% |
In enhancing fabric, described bottom, for being fixedly linked with timber, the vegetable fibre fabric of employing is single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric, and material is jute or ramie; After whole composite plate enhancing mixed goods completes making, be fixedly linked by bottom and timber, utilize and go deep into the resin (binding resin) of wood-fibred and flaxen fiber micropore, produce " glue nail " effect, to strengthen the binding strength between FRP plate and solid wood board, wood-fiber board.
In enhancing fabric, the fabric of the high elastic modulus that described elastic layer is selected, as single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric; Material is aramid fiber, polyamide fibre, carbon fibre, nylon, acrylic fibers, terylene, polypropylene fibre, polyvinyl, polyvinyl chloride fibre or spandex.
In enhancing fabric, described packed layer can adopt isosceles triangular prism shape foamed plastics closely to fill, and multilayer basalt Woven glass cloth is set on the contact surface of adjacent foam plastics, its orlop adopts the basalt glass-fiber-fabric of bottom surface plating, for reflected radar ripple, laser wave.Isosceles triangular prism foamed plastics cross section is isosceles triangle, when triangle base angle is not equal to π/4, and π/3,5 π/12, during 4 π/9, radar wave and the laser wave of vertical incidence no longer return recipient, thus realize the effect of radar invisible, laser camouflage; When base angle belongs to (π/3,5 π/12) or (5 π/12,4 π/9) time, the radar wave vertically injected or laser wave repeatedly (6-18 time) through by extinction, inhale ripple black basalt Woven glass cloth fill interface, cause intensity significantly to decay, thus form trap effect; When non-military use, common Woven glass cloth, basalt fibre fabrics and monoblock cuboid foamed plastics also can be adopted as packed layer; Described filling fabric adopts single-phase cloth, plain, twill or satin institutional framework.
The protective layer of basalt Woven glass cloth, and the basalt glass of packed layer, foamed plastics can also work in coordination with the characteristic playing thermal insulation and sound absorption, the mixed goods that the present invention is obtained has radar, laser, sonar, infrared complete stealthy feature.
In enhancing fabric preparation process, use the method weaved and sew up to make above-mentioned multilayer material be linked to be an entirety, then carrying out compound by being linked to be overall enhancing fabric, namely utilizing thermosetting resin by the enhancing fabric construction solidifying and setting of entirety.
Thermosetting resin refers under heating, pressurization, curing agent effect, action of ultraviolet light, be solidified into the synthetic resin of insoluble not fusant matter, mainly contain phenolic resins, epoxy resin, amino resins, unsaturated polyester (UP), silicon ether resin, melamine resin, furane resins, polybutadiene, organic siliconresin etc.
Composite molding mode adopts that pultrusion, VARI (VARI) are shaping, resin transfer moulding (RTM) is shaping, vacuum assisted resin transfer molding (VARTM) is shaping usually, also can adopt the technique such as hand pasting forming, injection molding, fiber winding forming, compression molding, autoclave molding, diaphragm forming, transfer molding, reaction injection molding, mantle expansion molding, punch forming.After composite material forming, through demoulding polishing, finally obtain FRP material.
Compared with prior art, the present invention adopts multiple dense basalt Woven glass cloth at the outermost layer strengthening mixed goods, improves the fire prevention of FRP, protection against the tide, anticorrosion, ageing resistace; In packed layer, use bottom surface to electroplate basalt Woven glass cloth and isosceles triangular prism foamed plastics skeleton, make the mixed goods of gained of the present invention strengthen FRP and there is radar, laser, sonar, infrared complete stealthy feature; Use multilayer high elastic fabric as deformation energy absorbed layer, improve engineering fuzzy sets service life; Use linen as timber binder course, improve the fastness of compound interface between FRP and wood materials; Use the method weaved and sew up multilayer to be strengthened fabric and be linked to be an entirety, thus solve the technical barrier of the splitting between fabric, breach the bottleneck of Traditional project composite wooden material intensity.This enhancing fabric FRP improves the intensity of composite wooden material, fire prevention, protection against the tide, anticorrosion, ageing resistace, compensate for the natural defect of wood materials comprehensively, also extends the purposes of engineering fuzzy sets in military field simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation that timber of the present invention strengthens fabric, and wherein 1 is protective layer, and 2 is foamed plastics, and 3 is basalt Woven glass cloth, and 4 is elastic layer, and 5 is bottom, and 6 is suture.
Fig. 2 is radar invisible and radar wave trap principle schematic, and wherein arrow is radar wave direction.
Fig. 3 is the sewing effect schematic diagram of multilayer mixed goods prepared by the present invention, and thickness is 10 centimetres, and wherein (1) is for adopting foamed plastics as structural framework; (2) for removing the sewing effect schematic diagram that intermediate course obtains after composite curing.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
As shown in accompanying drawing 1-3, timber enhancing fabric comprises the bottom be fixedly linked with timber, sets gradually elasticity layer, packed layer and protective layer above described bottom.
Described bottom, for being fixedly linked with timber, adopt vegetable fibre fabric as timber laminating layer, utilize the resin going deep into wood-fibred and flaxen fiber micropore, produce " glue nail " effect, to strengthen the binding strength between FRP plate and solid wood board, wood-fiber board, the vegetable fibre fabric of employing is single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric, and material is jute or ramie.
Elastic layer is provided with above described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb the deformational stress that timber produces with humidity change, as single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric; Material is aramid fiber, polyamide fibre, nylon, acrylic fibers, terylene, polypropylene fibre, polyvinyl, polyvinyl chloride fibre or spandex.
At timber with strengthening in fabric, using and adopting black basalt Woven glass cloth as the extexine strengthening fabric, playing fire-retardant, anticorrosion, moistureproof object, particularly prevent FRP plate matrix illumination ageing.
In enhancing fabric, described packed layer can adopt isosceles triangular prism shape foamed plastics closely to fill, and on the contact surface of adjacent foam plastics, arrange multilayer basalt Woven glass cloth, and its orlop adopts the basalt glass-fiber-fabric of bottom surface plating.Isosceles triangular prism foamed plastics cross section is isosceles triangle, and this triangle base angle is not equal to π/4, π/3,5 π/12,4 π/9, to realize the effect of radar invisible, laser camouflage; Base angle generally falls into interval (π/3,5 π/12) or (5 π/12,4 π/9), makes the radar wave vertically injected or laser wave repeatedly through the interface of being filled by extinction, the black basalt Woven glass cloth of inhaling ripple, thus forms trap effect; When non-military use, common Woven glass cloth, basalt fibre fabrics and monoblock cuboid foamed plastics also can be adopted as packed layer; Described filling fabric adopts single-phase cloth, plain, twill or satin institutional framework.
In enhancing fabric preparation process, use the method weaved and sew up to make above-mentioned multilayer material be linked to be an entirety, then carrying out compound by being linked to be overall enhancing fabric, namely utilizing thermosetting resin that the enhancing fabric of entirety is carried out compound.
Thermosetting resin refers under heating, pressurization, curing agent effect, action of ultraviolet light, be solidified into the synthetic resin of insoluble not fusant matter, mainly contain phenolic resins, epoxy resin, amino resins, unsaturated polyester (UP), silicon ether resin, melamine resin, furane resins, polybutadiene, organic siliconresin etc.Composite molding mode adopts that pultrusion, VARI (VARI) are shaping, resin transfer moulding (RTM) is shaping, vacuum assisted resin transfer molding (VARTM) is shaping usually, also can adopt the technique such as hand pasting forming, injection molding, fiber winding forming, compression molding, autoclave molding, diaphragm forming, transfer molding, reaction injection molding, mantle expansion molding, punch forming.After composite material forming, through demoulding polishing, finally obtain FRP material.
Embodiment 1
Multilayer serving textile heat curing-type FRP plate: 300 grams of basalt glass unidirectional cloth intensity 1900MPa, proportion 2.7; 400 grams of fine single-phase cloth intensity 2000MP of carbon, proportion 1.78; 430 grams of meta-aramid plains, intensity 2000MP, proportion 1.46; 70 grams of jute grid cloths, proportion 1.2.Prefabricated component 1-4 layer adopts basalt glass plain (fire prevention, moistureproof, wear-resisting, anti-Japanese illumination aging), 5-6 layer adopts glass fibre unidirectional cloth (machine direction is parallel to tension direction to increase tensile strength), 7-8 layer adopts the fine plain of carbon (absorbing timber strain energy of distortion), 9 layers adopt jute grid cloth (improving and wood composite interface fastness), and are seamed to entirety with the non-twist aramid yarn of 660D trade mark 529S.
Adopt vacuum assisted resin transfer molding (VARTM) technique, resin is epoxy resin.Composite preform is laid on mould, vacuumizes, resin injection with vacuum bag after closing.By negative pressure, resin immersed in the fiber gap of preform completely and solidify.This technique does not need the equipment of the complexity such as autoclave pressure, and moulding process is simple, and cost is lower, and composite quality is good, does not have pernicious gas to overflow.
Embodiment 2
As shown in drawings, 1-multilayer basalt glass-fiber-fabric, 2-foamed plastics isosceles triangular prism, the single-phase cloth of 3-one-side electroplating basalt glass, 4-multilayer carbon fibre/aramid fiber integral fabric, 5-individual layer jute grid cloth, 6-non-twist basalt glass stitching yarns.Wherein foamed plastics isoceles triangle prism is as skeleton, in (π/3,5 π/12) and (5 π/12,4 π/9) scope, select base angle; Basalt glass single-phase cloth bottom surface electrodeposited coating is used for reflected radar and laser wave, and multilayer carbon fibre/aramid fiber integral fabric is used for strengthening, and individual layer megila is used for and improves and the gummed fastness of wood materials, and stitching yarns is non-twist basalt glass yarn.With liquid bimaleimide resin for matrix, adopt vacuum assisted resin transfer molding (VARTM) process combining shaping.
Material being prepared into length and width is 200mm × 200mm, and thickness is the sample of 5mm.When adopting the radar wave signal vertical incidence sample of 8.2-12.4GHz, the reflected signal that recipient receives is negligible.Owing to adopting radar wave trap tech scheme of the present invention, the radar wave vertically injected repeatedly (6-18 time), through the black basalt Woven glass cloth by weak suction ripple, causes intensity significantly to decay, and no longer returns recipient, as shown in above-mentioned result of the test simultaneously.
Except packed layer forms trap, adopt the protective layer of basalt Woven glass cloth, basalt glass and foamed plastics can also be worked in coordination with and be played characteristic that is adiabatic and sound absorption, and the mixed goods obtained to make the present invention has radar, laser, sonar, infrared complete stealthy feature.Adopt Instron equipment to carry out strength test, learn that the tensile strength of timber heat curing-type enhancing FRP plate can reach 1000-1800MPa.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (10)
1. timber is with strengthening fabric, comprises the bottom be fixedly linked with timber, it is characterized in that, set gradually elasticity layer, packed layer and protective layer above described bottom;
Described bottom, for being fixedly linked with timber, adopts vegetable fibre fabric as timber laminating layer;
Be provided with elastic layer above described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb the deformational stress that timber produces with humidity change;
Be provided with packed layer above described elastic layer, adopt common glass, basalt fibre, basalt Woven glass cloth or/and foamed plastics is filled;
Be provided with protective layer above described packed layer, described protective layer adopts basalt Woven glass cloth;
In described packed layer, isosceles triangular prism shape foamed plastics is closely filled, and on the contact surface of adjacent foam plastics, arrange multilayer basalt Woven glass cloth, and orlop adopts the basalt glass-fiber-fabric of bottom surface plating; The fabric of described filling adopts single-phase cloth, plain, twill or satin institutional framework.
2. timber according to claim 1 strengthens fabric, it is characterized in that, in described packed layer, isosceles triangular prism foamed plastics cross section is isosceles triangle, and triangle base angle is not equal to π/4, π/3,5 π/12,4 π/9, radar wave and the laser wave of vertical incidence no longer return recipient, thus realize the effect of radar invisible, laser camouflage; When base angle belongs to (π/3,5 π/12) or (5 π/12,4 π/9) time, the radar wave vertically injected or laser wave repeatedly through by extinction, inhale ripple black basalt Woven glass cloth fill interface, cause intensity significantly to decay, thus form trap effect.
3. the timber according to claims 1 or 2 is with strengthening fabric, it is characterized in that, in described elastic layer, the fabric of the high elastic modulus selected is single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric; Material is aramid fiber, polyamide fibre, carbon fibre, nylon, acrylic fibers, terylene, polypropylene fibre, polyvinyl, polyvinyl chloride fibre or spandex.
4. the timber according to claims 1 or 2 is with strengthening fabric, it is characterized in that, in described bottom, the vegetable fibre fabric adopted is single-phase cloth, plain, twill, satin, grid cloth, curved surface fabric, 3 D weaving cloth or layer stereo fabric, and material is jute or ramie.
5. timber according to claim 1 strengthens fabric, it is characterized in that, in described packed layer, adopts common Woven glass cloth, basalt fibre fabrics and monoblock cuboid foamed plastics as packed layer.
6. the resin base fiber reinforced composite material utilizing the timber enhancing fabric as described in one of claim 1-5 to prepare, it is characterized in that, the method weaved and sew up is used to be that multilayer material is linked to be an entirety, then compound is carried out by being linked to be overall enhancing fabric, namely utilize thermosetting resin by the enhancing fabric crystal formation compound of entirety, after composite material forming, through demoulding polishing, finally obtain resin base fiber reinforced composite material.
7. the resin base fiber reinforced composite material prepared of timber enhancing fabric according to claim 6, it is characterized in that, described thermosetting resin is phenolic resins, epoxy resin, amino resins, unsaturated polyester (UP), silicon ether resin, melamine resin, furane resins, polybutadiene or organic siliconresin.
8. the resin base fiber reinforced composite material prepared of timber enhancing fabric according to claim 6, it is characterized in that, described composite molding mode pultrusion, VARI are shaping, the shaping hand pasting forming of resin transfer molding, vacuum assisted resin transfer molding, injection molding, fiber winding forming, compression molding, autoclave molding, diaphragm forming, transfer molding, reaction injection molding, mantle expansion molding or punch forming.
9. timber as described in one of claim 1-5 strengthen fabric radar, laser, sonar, infrared entirely stealthy in application.
10. the resin base fiber reinforced composite material utilizing timber enhancing fabric as described in one of claim 6-8 to prepare radar, laser, sonar, infrared entirely stealthy in application.
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| CN201310222105.7A CN103342015B (en) | 2013-06-05 | 2013-06-05 | Timber strengthen textile composite board and radar, laser, sonar, infrared entirely stealthy in application |
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| CN201310222105.7A CN103342015B (en) | 2013-06-05 | 2013-06-05 | Timber strengthen textile composite board and radar, laser, sonar, infrared entirely stealthy in application |
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| CN103922776B (en) * | 2014-04-01 | 2015-09-02 | 中国人民解放军国防科学技术大学 | Silicon carbide fiber reinforced silicon carbide composite material microwave-absorbing ceramic and preparation method thereof |
| CN109972410B (en) * | 2019-04-08 | 2021-03-19 | 成都斯特斯科技有限公司 | Stealth material with laser and radar compatible stealth and preparation method thereof |
| CN111844997B (en) * | 2020-08-10 | 2023-02-07 | 湖南文理学院 | A kind of multi-spectrum composite camouflage material and its preparation method |
| CN112680860B (en) * | 2020-12-11 | 2022-05-10 | 江苏恒力化纤股份有限公司 | Laptop upper cover plate containing fabric and preparation method thereof |
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