CN103342015A - Reinforced fabric composite plate for wood and applications in radar, laser, sonar and infrared whole stealth - Google Patents
Reinforced fabric composite plate for wood and applications in radar, laser, sonar and infrared whole stealth Download PDFInfo
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- CN103342015A CN103342015A CN2013102221057A CN201310222105A CN103342015A CN 103342015 A CN103342015 A CN 103342015A CN 2013102221057 A CN2013102221057 A CN 2013102221057A CN 201310222105 A CN201310222105 A CN 201310222105A CN 103342015 A CN103342015 A CN 103342015A
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Abstract
The invention discloses a composite plate reinforced mixed fabric and a preparation method thereof. The fabric includes a bottom layer, and an elastic layer, a filled layer and a protective layer which are successively arranged on the upside of the bottom layer. The bottom layer is used for being fixedly connected with wood, the elastic layer as a stress absorbing layer is arranged on the bottom layer, the upside of the elastic layer is provided with the filled layer which is filled with foamed plastics and basalt glass fiber fabrics, and the basalt glass fiber fabrics are employed by the protective layer. The composite plate reinforced mixed fabric is prepared by treatment of the fiber surface, yarn weaving, fabric sewing and composite curing molding. The technical schemes overcome the deficiencies in the prior art, solve various defects existing in a conventional reinforced fabric for wood, and further perfect a structure of the reinforced fabric for wood.
Description
Technical field
The invention belongs to composite and preparation method thereof, more particularly, relate to timber with strengthening 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 unique nexhaustible renewable resource.The advantage of timber be ratio of strength to weight height, environmental protection, shock-resistant, processability good, shortcoming is that intensity is low, inflammable, Yi Chao, perishable.
Tradition engineered wood composite material adopts FRP(Fiber Reinforced Plastic, resin base fiber reinforced composite material) plate strengthens, the general fine single-phase cloth of glass, basalt fibre or carbon of single kinds of fibers that adopts carries out the multilayer stack, formed by extrusion and tension then, thereby obtaining with the resin is the heat curing-type FRP enhancing sheet material (Chinese patent " basalt continuous fibre enhancement resin composite material and manufacture method thereof " of matrix, application number 2007101188874, June 13 2007 applying date, open day on August 6th, 2008).Traditional timber all is inorganic material with glass, basalt fibre, the carbon fibre that the FRP plate adopts, lack good compound interface with organic materials such as timber, resins, failure test is found, this type of FRP plate enhancement engineering composite wooden material, at first strengthen in the fabric at the FRP plate splitting takes place, cause whole fracture then.That is to say that the anti-splitting performance of FRP plate has become the intensity bottleneck of engineered wood composite material.
String is nexhaustible natural resources, and what be complementary therewith is the igneous rock resource.Igneous rock is solidified by earth lava and forms, and accounts for 95% of earth rock.Igneous rock is divided into acidity, neutrality, alkalescence, hyperalkaline four big classes, kind more than 700, and basalt is a kind of common alkaline igneous rocks.Nineteen twenty-two, Rittler has proposed the method (US4199336) of utilizing basalt to prepare fiber.Fiber belongs to ceramic material, contains glass and crystal simultaneously, therefore is named as basalt glass ceramic fibre (Basalt glass-ceramic fiber), is called for short basalt fibre.2009, Liu Huawu etc. solved the crystallization problem (ZL200910228295.7) in the basalt melt forming process, produced not crystalliferous black basalt glass fiber, were called for short the basalt glass.
Summary of the invention
The objective of the invention is to solve traditional timber and strengthen the various defectives that fabric exists, further improve timber with strengthening fabric construction, a kind of comprehensive wood performance that improves is provided, mixed goods strengthens FRP and preparation method thereof.In order further to improve engineered wood composite material (Engineered wood composites) performance, the present invention adopts to knit and closes or/and sews up and be whole multiple fiber mixed goods, strengthens fabric construction and heat curing-type FRP enhancing sheet material combined shaping mode has been carried out a series of improvement to timber is special-purpose.
Technical purpose of the present invention is achieved by following technical proposals:
Timber comprises the bottom that is fixedly linked with timber with strengthening fabric, sets gradually elasticity layer, packed layer and protective layer above described bottom.
Described bottom is used for being fixedly linked with timber, adopts vegetable fibre fabric as the timber laminating layer, utilizes the resin that gos deep into wood-fibred and flaxen fiber micropore, produces " glue nail " effect, with between enhancing FRP plate and solid wood plate, the wood-fiber board in conjunction with fastness;
Be provided with elastic layer above the described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb timber and change the deformational stress that produces with humidity;
Be provided with packed layer above the described elastic layer, adopt common glass, basalt fibre, basalt Woven glass cloth or/and foamed plastics is filled;
Be provided with protective layer above the described packed layer, described protective layer adopts the basalt Woven glass cloth.
Adopt black basalt Woven glass cloth as the extexine that strengthens fabric at timber with strengthening in the fabric, using, play fire-retardant, anticorrosion, moistureproof purpose, 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, open day on June 9th, 2010) solved the crystallization problem in the basalt melt forming process, produce not crystalliferous black basalt glass fiber, be called for short the basalt glass, its theoretical ratio of strength to weight is 240-300 times of common iron and steel (150MPa), heavy anticorrosion, wear-resisting (Mohs' hardness 7-8), high temperature resistant (softening point 910 degree), anti-ultralow temperature (270 degree), insulation, radar invisible (saturating ripple, trace is inhaled ripple), sonar stealthy (sound absorption), infrared stealth (thermal insulation), shading (seeing Table 1).The black basalt glass because fire prevention, insulation, shading, wear-resisting, high-strength, heavy anticorrosion, as the extexine of multilayer integral fabric, can play the effect of fire prevention, protection against the tide, anticorrosion and anti-illumination ageing.
Table 1, basalt glass and middle alkali glass performance are relatively
| Detect content | Basalt glass | Alkali glass in common |
| 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 | |
| The low-temperature working temperature | -270 | -60 | |
| Sound absorption | 90-99% | 80-93% | |
| Volume resistance | 0.4-3.8×10 12 | 1×10 11 | |
| The 2mol/L caustic soda boils | Mass loss | 2% | Mass loss 39% |
| 2mol/L hydrochloric acid boils | Mass loss | 5% | |
In strengthening fabric, described bottom is used for being fixedly linked with timber, and 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 is finished making, be fixedly linked by bottom and timber, the resin (binding resin) of wood-fibred and flaxen fiber micropore is goed deep in utilization, produces " glue nail " effect, with between enhancing FRP plate and solid wood plate, the wood-fiber board in conjunction with fastness.
In strengthening fabric, the fabric of the high elastic modulus that described elastic layer is selected for use is 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 strengthening fabric, described packed layer can adopt isosceles triangular column foamed plastics closely to fill, and at the contact-making surface of adjacent foamed plastics multilayer basalt Woven glass cloth being set, the basalt glass cloth that its orlop adopts bottom surface to electroplate is used for reflected radar ripple, laser wave.Isosceles triangular prism foamed plastics cross section is isosceles triangle, when the triangle base angle is not equal to π/4, and π/3,5 π/12,4 π/9 o'clock, the radar wave of vertical incidence and laser wave no longer return recipient, thereby realize the effect of radar invisible, laser camouflage; When the base angle belongs to (π/3,5 π/12) or when (5 π/12,4 π/9), the radar wave of vertically injecting or laser wave repeatedly (6-18 time) pass by extinction, inhale the interface that the black basalt Woven glass cloth of ripple is filled, cause intensity to decay significantly, thereby form trap effect; When non-military use, also can adopt common Woven glass cloth, basalt fibre fabric and monoblock cuboid foamed plastics as packed layer; Described filling fabric adopts single-phase cloth, plain, twill or satin institutional framework.
The basalt glass of the protective layer of basalt Woven glass cloth and packed layer, foamed plastics can also be worked in coordination with the characteristic that performance is adiabatic and absorb sound, and the mixed goods that makes the present invention get has radar, laser, sonar, infrared complete stealthy feature.
In strengthening the textile process, use the method for weaving and sewing up to make above-mentioned multilayer material be linked to be an integral body, will be linked to be whole enhancing fabric then and carry out compoundly, namely utilize thermosetting resin with the enhancing fabric construction solidifying and setting of integral body.
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.
The composite molding mode adopts pultrusion, VARI (VARI) moulding, resin transfer moulding (RTM) moulding, vacuum-assisted resin transfer molding (VARTM) moulding usually, also can adopt technologies 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.Behind the composite material forming, through demoulding polishing, obtain the FRP material at last.
Compared with prior art, the present invention adopts the fine and close basalt Woven glass cloth of multilayer at the outermost layer that strengthens mixed goods, has improved fire prevention, protection against the tide, anticorrosion, the ageing resistace of FRP; In packed layer, use the bottom surface to electroplate basalt Woven glass cloth and isosceles triangular prism foamed plastics skeleton, make the mixed goods enhancing FRP of gained of the present invention have radar, laser, sonar, infrared complete stealthy feature; Use the multilayer high elastic fabric as the deformation energy absorbed layer, improved engineered wood composite material service life; Use linen as the timber binder course, improved the fastness of compound interface between FRP and wood materials; The method that use is weaved and sewed up strengthens fabric with multilayer and is linked to be an integral body, thereby has solved the technical barrier of the splitting between fabric, has broken through the bottleneck of traditional engineered wood composite material intensity.This enhancing fabric FRP has improved intensity, fire prevention, protection against the tide, anticorrosion, the ageing resistace of composite wooden material, has remedied the natural defect of wood materials comprehensively, has also expanded the purposes of engineered wood composite material in military field simultaneously.
Description of drawings
Fig. 1 is the timber of the present invention structural representation that strengthens fabric, and wherein 1 is protective layer, and 2 is foamed plastics, and 3 is the 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 the radar wave direction.
Fig. 3 is the sewing effect schematic diagram of the multilayer mixed goods for preparing of 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 behind the composite curing.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
Shown in accompanying drawing 1-3, timber comprises the bottom that is fixedly linked with timber with the enhancing fabric, sets gradually elasticity layer, packed layer and protective layer above described bottom.
Described bottom, be used for being fixedly linked with timber, adopt vegetable fibre fabric as the timber laminating layer, the resin of wood-fibred and flaxen fiber micropore is goed deep in utilization, produce " glue nail " effect, with strengthen between FRP plate and solid wood plate, the wood-fiber board in conjunction with fastness, 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, material is jute or ramie.
Be provided with elastic layer above the described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb timber and change the deformational stress that produces with humidity, 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.
Adopt black basalt Woven glass cloth as the extexine that strengthens fabric at timber with strengthening in the fabric, using, play fire-retardant, anticorrosion, moistureproof purpose, particularly prevent FRP plate matrix illumination ageing.
In strengthening fabric, described packed layer can adopt isosceles triangular column foamed plastics closely to fill, and at the contact-making surface of adjacent foamed plastics multilayer basalt Woven glass cloth is set, the basalt glass cloth that its orlop adopts the bottom surface to electroplate.Isosceles triangular prism foamed plastics cross section is isosceles triangle, and this triangle base angle is not equal to π/4, and π/3,5 π/12,4 π/9 is to realize the effect of radar invisible, laser camouflage; The base angle generally falls into interval (π/3,5 π/12) or (5 π/12,4 π/9), makes radar wave or the laser wave vertically injected repeatedly pass by extinction, inhale the interface of the black basalt Woven glass cloth filling of ripple, thereby forms trap effect; When non-military use, also can adopt common Woven glass cloth, basalt fibre fabric and monoblock cuboid foamed plastics as packed layer; Described filling fabric adopts single-phase cloth, plain, twill or satin institutional framework.
In strengthening the textile process, use the method for weaving and sewing up to make above-mentioned multilayer material be linked to be an integral body and get final product, the enhancing fabric that will be linked to be integral body then carries out compound, namely utilizes thermosetting resin to carry out the enhancing fabric of integral body 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.The composite molding mode adopts pultrusion, VARI (VARI) moulding, resin transfer moulding (RTM) moulding, vacuum-assisted resin transfer molding (VARTM) moulding usually, also can adopt technologies 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.Behind the composite material forming, through demoulding polishing, obtain the FRP material at last.
Multilayer serving textile heat curing-type FRP plate: 300 gram basalt glass unidirectional cloth intensity 1900MPa, proportion 2.7; The fine single-phase cloth intensity 2000MP of 400 gram carbon, proportion 1.78; 430 gram meta-aramid plains, intensity 2000MP, proportion 1.46; 70 gram jute grid cloth, proportion 1.2.Prefabricated component 1-4 layer adopts basalt glass plain (fire prevention, moistureproof, wear-resisting, anti-Japanese illumination aging), the 5-6 layer adopts glass fibre unidirectional cloth (machine direction is parallel to the tension direction to increase tensile strength), the 7-8 layer adopts the fine plain of carbon (absorbing the timber strain energy of distortion), 9 layers are adopted jute grid cloth (improving and wood composite interface fastness), and become integral body with the non-twist aramid yarn suturing with thread management of 660D trade mark 529S.
Adopt vacuum-assisted resin transfer molding (VARTM) technology, resin is epoxy resin.The composite preform is laid on the mould, and with vacuumizing after the vacuum bag sealing, resin injects.Make resin immerse in the fiber gap of preform fully and solidify by negative pressure.This technology does not need complex apparatus 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.
As shown in drawings, 1-multilayer basalt glass cloth, 2-foamed plastics isosceles triangular prism, the 3-single face is electroplated the single-phase cloth of basalt glass, 4-multilayer carbon fibre/aramid fiber integral fabric, 5-individual layer jute grid cloth, the non-twist basalt glass of 6-stitching yarns.Wherein foamed plastics isoceles triangle prism is selected the base angle as skeleton in (π/3,5 π/12) and (5 π/12,4 π/9) scope; The single-phase cloth of basalt glass 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 the individual layer megila is used for and the gummed fastness of raising and wood materials, and stitching yarns is non-twist basalt glass yarn.Be matrix with the liquid bimaleimide resin, adopt the composite molding of vacuum-assisted resin transfer molding (VARTM) technology.
It is 200mm * 200mm that material is prepared into length and width, 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 is received can be ignored.Owing to adopt radar wave trap tech scheme of the present invention, the radar wave of vertically injecting repeatedly (6-18 time) passes black basalt Woven glass cloth by weak suction ripple, causes intensity to decay significantly, and the while is no longer returned recipient, shown in above-mentioned result of the test.
Except packed layer constitutes trap, adopt the protective layer of basalt Woven glass cloth, basalt glass and foamed plastics can also be worked in coordination with the characteristic of performance thermal insulation and sound absorption, so that the mixed goods that the present invention gets has radar, laser, sonar, infrared complete stealthy feature.Adopt Instron equipment to carry out strength test, learn that timber can reach 1000-1800MPa with the tensile strength that heat curing-type strengthens the FRP plate.
More than the present invention has been done exemplary description; should be noted that; under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (9)
1. timber comprises the bottom that is fixedly linked with timber with strengthening fabric, it is characterized in that, sets gradually elasticity layer, packed layer and protective layer above described bottom;
Described bottom is used for being fixedly linked with timber, adopts vegetable fibre fabric as the timber laminating layer;
Be provided with elastic layer above the described bottom, adopt the fabric of high elastic modulus, be close to bottom, as stress absorbing layer, absorb timber and change the deformational stress that produces with humidity;
Be provided with packed layer above the described elastic layer, adopt common glass, basalt fibre, basalt Woven glass cloth or/and foamed plastics is filled;
Be provided with protective layer above the described packed layer, described protective layer adopts the basalt Woven glass cloth.
2. timber according to claim 1 is with strengthening fabric, it is characterized in that, in described bottom, 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; In described elastic layer, the fabric of the high elastic modulus of selecting for use 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.
3. use according to the described timber of one of claim 1-2 and strengthen fabric, it is characterized in that, in described packed layer, isosceles triangular column foamed plastics is closely filled, and at the contact-making surface of adjacent foamed plastics multilayer basalt Woven glass cloth is set, the basalt glass cloth that orlop adopts the bottom surface to electroplate; The fabric of described filling adopts single-phase cloth, plain, twill or satin institutional framework.
4. use according to the described timber of one of claim 3 and strengthen fabric, it is characterized in that, in described packed layer, isosceles triangular prism foamed plastics cross section is isosceles triangle, and the triangle base angle is not equal to π/4, π/3,5 π/12,4 π/9, the radar wave of vertical incidence and laser wave no longer return recipient, thereby realize the effect of radar invisible, laser camouflage; When the base angle belongs to (π/3,5 π/12) or when (5 π/12,4 π/9), the radar wave of vertically injecting or laser wave repeatedly pass by extinction, inhale the interface that the black basalt Woven glass cloth of ripple is filled, cause intensity to decay significantly, thereby form trap effect.
5. timber according to claim 3 is characterized in that with strengthening fabric, in described packed layer, adopts common Woven glass cloth, basalt fibre fabric and monoblock cuboid foamed plastics as packed layer.
6. utilize as the described timber of one of claim 1-5 with strengthening fabric FRP, it is characterized in that, the method that use is weaved and sewed up makes multilayer material be linked to be an integral body, to be linked to be whole enhancing fabric then carries out compound, namely utilize thermosetting resin to carry out the enhancing fabric of integral body compound, behind the composite material forming, through demoulding polishing, obtain the FRP material at last.
7. timber according to claim 6 is with strengthening fabric FRP, 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; Described composite molding mode adopts pultrusion, VARI moulding, resin transfer molding, vacuum-assisted resin transfer molded, hand pasting forming, injection molding, fiber winding forming, compression molding, autoclave molding, diaphragm forming, transfer molding, reaction injection molding, mantle expansion molding or punch forming.
8. timber as claimed in claim 4 is with strengthening fabric in radar, laser, sonar, infrared full application in stealthy.
9. timber as claimed in claim 6 is with strengthening fabric FRP in radar, laser, sonar, infrared full application in stealthy.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN103342015B CN103342015B (en) | 2016-02-03 |
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| CN109972410A (en) * | 2019-04-08 | 2019-07-05 | 成都斯特斯科技有限公司 | A kind of stealth material and preparation method thereof of laser and radar multi-Functional Camouflage |
| CN111844997A (en) * | 2020-08-10 | 2020-10-30 | 湖南文理学院 | Multi-spectrum composite camouflage material and preparation method thereof |
| CN112680860A (en) * | 2020-12-11 | 2021-04-20 | 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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| CN112680860A (en) * | 2020-12-11 | 2021-04-20 | 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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| Publication number | Publication date |
|---|---|
| CN103342015B (en) | 2016-02-03 |
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