CN104761880B - Short fiber reinforced pultrusion composite materials solar components frame and preparation method thereof - Google Patents

Short fiber reinforced pultrusion composite materials solar components frame and preparation method thereof Download PDF

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Publication number
CN104761880B
CN104761880B CN201510116640.3A CN201510116640A CN104761880B CN 104761880 B CN104761880 B CN 104761880B CN 201510116640 A CN201510116640 A CN 201510116640A CN 104761880 B CN104761880 B CN 104761880B
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China
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fiber
resin
solar components
components frame
continuous
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CN201510116640.3A
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Chinese (zh)
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CN104761880A (en
Inventor
李莉
李珍
马贤
蒋涛
张恩国
李鸿
张旭茗
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哈尔滨工程大学
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Abstract

The invention discloses a kind of short fiber reinforced pultrusion composite materials solar components frame, it is characterised in that the solar components frame is prepared by pultrusion molding process, including chopped fiber, continuous fiber and resin, and the percent by volume of each component is：Chopped fiber 5% 10%, continuous fiber 50% 80%, resin 10% 40%.Also disclose the preparation method of the solar components frame.In this method add short fiber reinforced body, using solve the problems, such as continuous lod pultrusion composite materials as solar components frame use when in vertical fibers direction intensity deficiency.Continuous fiber is impregnated with resin compound, dispersed in resin compound to have percent by volume for 5% 10% chopped fiber, is then poured into pultrusion in mould and is gone out required solar components frame.Chopped fiber forms overlap joint between continuous fiber, can improve the performance in section bar vertical fibers direction, can not only keep the excellent properties along machine direction, good mechanical property is equally ensure that in vertical fibers direction.

Description

Short fiber reinforced pultrusion composite materials solar components frame and preparation method thereof

Technical field

The present invention relates to a kind of pultrusion composite materials section bar, more particularly, to a kind of short fiber reinforced pultrusion composite materials too Positive energy module frame and preparation method thereof.

Background technology

As environment situation is worsening, people are increasing to the demand of clean energy resource, and solar energy can be again as one kind More and more paid attention in production-goods source.Solar energy resources has played certain effect in daily life, for example, the sun The use of energy water heater and photovoltaic generation.The material that solar facilities uses will undergo sunshine for a long time in use Irradiation, it is therefore desirable to which there is good weatherability and anti-ultraviolet ability to improve the durability of equipment and reliability.

Material currently used for solar components frame is mostly aluminum alloy materials, however, producing the sun using aluminium section bar Problems be present in energy battery component frame：Low production efficiency, high expensive；Corrosion-resistant, anode oxide film were using Easily scratched in journey, scratch position resistance to corrosion and drastically decline；Poor insulativity when being grounded lightning protection and being grounded installation, it is necessary to cause Biasing problem can promote PID effects；Thermal coefficient of expansion is high compared with glass, and matching is poor, and thermal shock resistance is poor；Shock resistance, resist Fatigability is poor, is also easy to produce plastic deformation.

Due to above-mentioned aluminium alloy component defect, sight is turned to and answered using continuous fiber reinforced thermoplastic resin by researcher Frame of the condensation material as solar photovoltaic assembly, shape extrusion is carried out using pultrusion mode.Pultrusion continuous fiber increases Heat-flash thermoplastic resin composite material section bar has the characteristics that：1st, intensity is high, and the glass fiber reinforced plastic shapes of directional glass fiber enhancing exist Along machine direction intensity up to 900MPa；2nd, good insulating, without being grounded lightning protection, PID effects can effectively be avoided；3rd, thermal deformation temperature Degree is high, and the heat distortion temperature of drawing and extruding section bar is 186 DEG C, is not softened under high temperature, -60 DEG C non-brittle, ensure that various environment temperatures Under normal use；4th, deformation rate is low, and geometry and size can maintain a long-term stability；5th, corrosion resistance is strong and it produces work Skill has the characteristics that low noise, high efficiency, power consumption is low, contaminative is small.Therefore it is expected to replace aluminium alloy as photovoltaic group The frame of part.But pultrusion continuous fiber reinforced composite materials section bar is not still wide as the use of solar components frame at present General, reason is due to that the structure of solar components frame is special, and pultrusion continuous fiber reinforced composite materials have structural strength not The problem of sufficient.Therefore, solve the problems, such as that can structural strength deficiency conduct for pultrusion continuous fiber reinforced composite materials section bar The use of solar components frame is most important.

It is mostly vertical to strengthen its using conventional reinforcing materials such as yarn, continuous fiber felt, fabrics to solve this problem at present The mechanical property of machine direction, in the published existing patent for preparing solar components frame, such as in Chinese patent In CN103302872A, glass fibre is thick glass fibre, glass fiber surface felt, one kind in Woven glass cloth or at least two combinations；Together Sample, in Chinese patent CN103205004A, described fibre reinforcement is the mixture of composite fibre and composite fibre fabric, Strengthen the intensity in solar components frame vertical fibers direction with this, it is vertical fine though can reach enhancing in this way The purpose of direction intensity is tieed up, but its preparation technology is more complicated.

The content of the invention

It is strong it is an object of the invention to solve pultrusion composite materials solar components border structure using short fiber reinforced Spend the problem of insufficient, chopped fiber added in resin impregnant in pultrusion process, and be dispersed in resin, so as to get type Material middle short fiber forms overlap joint between continuous fiber, makes up continuous fiber reinforced thermoplastic composite material in vertical fibers direction Performance deficiency, makes its performance more excellent, and its technique simply operates well, and cost also will not substantially increase, as a result easily controllable, Flexible modulation can be carried out according to the actual requirements.

The technical scheme is that：

The invention provides a kind of short fiber reinforced pultrusion composite materials solar components frame, the solar components frame Prepared by pultrusion molding process, including chopped fiber, continuous fiber and resin, the percent by volume of each component are：Chopped fiber 5%-10%, continuous fiber 50%-80%, resin 10%-40%.

Preferably, described chopped fiber be glass fibre, aramid fiber, carbon fiber, basalt fibre, nylon fiber, One or more in polyester fiber and superhigh molecular weight polyethylene fibers, its length≤6mm.The chopped fiber is by corresponding Dispersing mode such as heating stirring or compressed air blow etc. scattered, are uniformly distributed in resin compound.

Preferably, the continuous fiber is continuous glass fibre or carbon fiber, 1-30 μm of diameter.

Preferably, also including additive in the solar components frame, the content of the additive is resinite The 0-15% of product content, the additive are dispersant, releasing agent, fire retardant, colouring agent, coupling agent, curing agent, ultraviolet suction Receive the one or more in agent.

Preferably, the resin is polyurethane resin, unsaturated polyester (UP), vinylite, epoxy resin, phenolic aldehyde tree Fat, furane resins, using methylbenzene e pioic acid methyl ester as the one or more in the resin of monomer.

Present invention also offers the method for preparing above-mentioned solar components frame, its preparation process is：

(1) appropriate dispersant and dispersing mode are selected according to different types of chopped fiber, chopped fiber is pre-dispersed, to protect Demonstrate,proving it can be uniformly distributed in the resin mixture；

(2) the chopped fiber mixing that percentage by volume is 10%-40% liquid resins, 5%-10% is obtained into resin to mix Thing；The preparation for solar energy border component, the used in amounts of chopped fiber will carry out reasonable selection, and chopped fiber dosage can when too small It is less to constrain the fiber number of matrix, thus dilution effect is notable, reduces tensile strength；When chopped fiber dosage is excessive, Because the addition of chopped fiber increases gelatin viscosity, it can make it that glue and mould friction are big in pultrusion process, pultrusion is difficult； Select the volume fraction to be advantageous to the effective stress transmission by matrix to fiber, reach the purpose of enhancing transverse strength.

(3) by percentage by volume be 50%-80% dipping coupling agent and dry continuous fiber in resin compound Middle dipping；The impregnation time, 15~20s was advisable, and was defined by ensureing that fiber is saturated.

(4) forming machine using drawing and extrusion is utilized, is 150 DEG C -210 DEG C in mold temperature, hauling speed is 1m/min-3m/min conditions Under, forming operation and cutting operation are carried out to the continuous fiber for impregnating resin compound to obtain required solar energy frame group Part.For the final molding of solar energy border component, mold temperature and hauling speed etc. also function to more important effect, mould Temperature is too low resin is fully cured；Temperature is too high, first, the energy is wasted, second, may increase the internal stress of product, shadow Ring the dimensional stability and its mechanical performance of product, in some instances it may even be possible to resin matrix is cracked and is influenceed product properties.Traction Speed should then be adjusted according to factors such as resin matrix chemical reaction characteristic, mold temperature distribution, die lengths, hauling speed mistake Slowly, resin is grown in In-mold residence times, and gel point and dispersal point are forward, and the demoulding can be caused difficult, on the contrary then can consolidate resin Change not exclusively and influence the performance of product.

Preferably, chopped fiber used in above-mentioned steps (1) is glass fibre, aramid fiber, carbon fiber, basalt are fine One or more in dimension, nylon fiber, polyester fiber and superhigh molecular weight polyethylene fibers, its length≤6mm.

Preferably, continuous fiber used in above-mentioned steps (3) is continuous glass fibre or carbon fiber, a diameter of 1-30 μm。

Preferably, being also added with additive in above-mentioned steps (2) in the resin mixture, the content of the additive is The 0-15% of resin volume content, the additive are dispersant, releasing agent, fire retardant, colouring agent, coupling agent, curing agent, purple One or more in ultraviolet absorbers.

Preferably, resin used is polyurethane resin, unsaturated polyester (UP), vinylite, epoxy in above-mentioned steps (2) Resin, phenolic resin, furane resins, using methylbenzene e pioic acid methyl ester as the one or more in the resin of monomer.

Compared with prior art, the present invention has following special excellent technique effect：

The present invention divides glass fibre, aramid fiber, carbon fiber, basalt fibre, nylon fiber, polyester fiber or superelevation One or more of chopped fibers in sub- weight polyethylene fiber are dispersed in resin maceration extract, and the volume content of chopped fiber is 5%-10%, this matches the transverse strength that can effectively improve solar components frame；Prepared by composite material drawing and extruding technique Solar components frame, mould heating-up temperature is 150 DEG C -210 DEG C, hauling speed 1m/min-3m/min, in the technological parameter Lower production solar energy frame efficiency high, good moldability；This method is simply easy compared with the method for original enhancing vertical direction intensity OK, efficient and convenient and can realize purpose, cost also will not substantially increase, as a result easily controllable, can also carry out according to the actual requirements Flexible modulation；The frame uses chopped fiber and continuous lod simultaneously, and chopped fiber is overlapped between continuous fiber, not only kept Along the excellent properties in continuous fiber direction, good mechanical property, gained solar energy equally ensure that in vertical fibers direction Module frame has the advantages that light weight, environmental protection, insulation, mechanical property be good, corrosion resistance and good, avoids PID effects.

Brief description of the drawings

Fig. 1 is the gained solar components frame sample stress strain curve of the embodiment of the present invention 1；

Fig. 2 is the gained solar components frame sample stress strain curve of the embodiment of the present invention 2；

Fig. 3 is the gained solar components frame sample stress strain curve of the embodiment of the present invention 3；

Fig. 4 is the gained solar components frame sample stress strain curve of the embodiment of the present invention 4.

Embodiment

Specific embodiment one：

The solar components frame of the present embodiment is made up of following methods：(1) pre-dispersed short carbon fiber, by load weighted carbon Fiber is put into the water that temperature is 38-44 DEG C, and with 250W power ultrasonics vibration 10min or so, it is fine to add appropriate ethoxy Plain dispersant is tieed up, is stirred, continues sonic oscillation, continues 10min or so, it is stand-by to take out drying；(2) it is 5% by percent by volume Pre-dispersed good short carbon fiber add in the polyurethane that percent by volume is 25%, obtain uniform resin through mechanical agitation and mix Compound；(3) continuous glass fibre for impregnating coupling agent and drying is impregnated in the resin mixture, the body of continuous glass fibre Product percentage is 70%；(4) using mold temperature as 180 DEG C, pultrusion speed is that 2m/min technological parameter is molded into by pultrusion Solar components frame prepared by type technique, as shown in Figure 1, it is 767MPa along machine direction intensity to gained frame, stretching Curve such as accompanying drawing 2, vertical fibers direction intensity are 200MPa, are applicable to ocean and wet environment, avoid solar components PID Effect.

Specific embodiment two：

The solar components frame of the present embodiment is made up of following methods：(1) by percent by volume be 4% the short fibre of aramid fiber The staple glass fibre that dimension is 4% with percent by volume is added in the polyurethane that percent by volume is 22%, and heated stirring obtains Uniform resin compound；(2) continuous glass fibre for impregnating coupling agent and drying is impregnated in the resin mixture, continuously The percent by volume of glass fibre is 70%；(3) using mold temperature as 190 DEG C, pultrusion speed is 2.5m/min technological parameter Solar components shape of peripheral frame is obtained by pultrusion molding process.As shown in Figure 2, it is along fiber side for gained frame stress strain curve It is 1071MPa to intensity, vertical fibers direction intensity is 230MPa, and this frame intensity is high, and good corrosion resistance can be used for needing height The field of intensity frame material.

Specific embodiment three：

The solar components frame of the present embodiment is made up of following methods：(1) pre-dispersed short carbon fiber, by load weighted carbon Fiber is put into the water that temperature is 38-44 DEG C, and with 250W power ultrasonics vibration 10min or so, it is fine to add appropriate ethoxy Plain dispersant is tieed up, is stirred, continues sonic oscillation, continues 10min or so, it is stand-by to take out drying；(2) it is 8% by percent by volume Pre-dispersed good carbon chopped fiber and percent by volume be 2% fire retardant hydrated alumina Al2O3·3H2O (ATH) adds body Product percentage is in 30% polyurethane, and uniform resin compound is obtained through mechanical agitation；(3) coupling agent will be impregnated and dried Dry continuous glass fibre impregnates in the resin mixture, and the percent by volume of continuous glass fibre is 60%；(4) with mould temperature Spend for 180 DEG C, pultrusion speed is that 2m/min technological parameter obtains solar components shape of peripheral frame by pultrusion molding process.Institute Obtain frame stress strain curve as shown in Figure 3, it is 804.26MPa along machine direction intensity, and vertical fibers direction intensity is 200MPa, the solar components frame have certain anti-flammability, can be used under inflammable and explosive environment.

Specific embodiment four：

The solar components frame of the present embodiment is made up of following methods：(1) blowing mode using compressed air will weigh The short basalt fiber that good percent by volume is 8% is added in the epoxy resin that percent by volume is 25%, while adds resistance Agent is fired, percent by volume 2%, uniform resin compound is obtained through mechanical agitation；(2) by impregnated coupling agent and dry Continuous glass fibre impregnates in the resin mixture, and the percent by volume of continuous glass fibre is 65%；(3) using mold temperature as 165 DEG C, pultrusion speed is that 1.2m/min technological parameter obtains solar components frame, gained frame by pultrusion molding process As shown in Figure 4, it is 820.15MPa along machine direction intensity to stress strain curve, and vertical fibers direction intensity is 205MPa.

The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (6)

1. a kind of short fiber reinforced pultrusion composite materials solar components frame, it is characterised in that the solar components frame leads to Pultrusion molding process preparation is crossed, including chopped fiber, continuous fiber and resin, the percent by volume of each component are：Chopped fiber 5%- 10%, continuous fiber 50%-80%, resin 10%-40%, described chopped fiber be glass fibre, aramid fiber, carbon fiber, One or more in basalt fibre, nylon fiber, polyester fiber and superhigh molecular weight polyethylene fibers, its length≤6mm, The continuous fiber is continuous glass fibre or carbon fiber, and 1-30 μm of diameter, the chopped fiber is by heating stirring, compression sky Air-blowing is sent or the mode of ultrasonic vibration is disperseed, and is uniformly distributed in resin compound.
2. short fiber reinforced pultrusion composite materials solar components frame according to claim 1, it is characterised in that described Resin be polyurethane resin, unsaturated polyester (UP), vinylite, epoxy resin, phenolic resin, furane resins, with metering system Sour methyl esters is the one or more in the resin of monomer.
3. a kind of preparation method of short fiber reinforced pultrusion composite materials solar components frame, it is characterised in that comprising as follows Step：
(1) appropriate dispersant and dispersing mode are selected according to different types of chopped fiber, chopped fiber is pre-dispersed, to ensure it It can be uniformly distributed in the resin mixture, the dispersant includes hydroxyethyl cellulose dispersant, and the dispersing mode includes adding Thermal agitation, compressed air blow and ultrasonic vibration；
(2) the chopped fiber mixing that percentage by volume is 10%-40% liquid resins, 5%-10% is obtained into resin compound；
(3) by percentage by volume be 50%-80% dipping coupling agent and dry continuous fiber soak in the resin mixture Stain, dip time are 15~20s；
(4) forming machine using drawing and extrusion is utilized, is 150 DEG C -210 DEG C in mold temperature, under the conditions of hauling speed is 1m/min-3m/min, Forming operation and cutting operation are carried out to the continuous fiber for impregnating resin compound to obtain required solar energy border component.
4. the preparation method of short fiber reinforced pultrusion composite materials solar components frame according to claim 3, it is special Sign is that chopped fiber used is glass fibre, aramid fiber, carbon fiber, basalt fibre, nylon fibre in the step (1) One or more in dimension, polyester fiber and superhigh molecular weight polyethylene fibers, its length≤6mm.
5. the preparation method of short fiber reinforced pultrusion composite materials solar components frame according to claim 3, it is special Sign is, continuous fiber used is continuous glass fibre or carbon fiber in the step 3), a diameter of 1-30 μm.
6. the preparation method of short fiber reinforced pultrusion composite materials solar components frame according to claim 3, it is special Sign is that resin used is polyurethane resin, unsaturated polyester (UP), vinylite, epoxy resin, phenolic aldehyde in the step (2) Resin, furane resins, using methyl methacrylate as the one or more in the resin of monomer.
CN201510116640.3A 2015-03-17 2015-03-17 Short fiber reinforced pultrusion composite materials solar components frame and preparation method thereof CN104761880B (en)

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CN105553410B (en) * 2015-12-28 2017-10-31 哈尔滨工程大学 A kind of composite solar components connection structure of frame
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CN105897139B (en) * 2016-06-13 2018-07-10 南京工业大学 Solar power generation waterborne composite material floating body pallet system and its production process
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