CN112266578A - Solar photovoltaic bracket and preparation method thereof - Google Patents

Solar photovoltaic bracket and preparation method thereof Download PDF

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Publication number
CN112266578A
CN112266578A CN202010992210.9A CN202010992210A CN112266578A CN 112266578 A CN112266578 A CN 112266578A CN 202010992210 A CN202010992210 A CN 202010992210A CN 112266578 A CN112266578 A CN 112266578A
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parts
solar photovoltaic
weight
glass fiber
resin
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CN202010992210.9A
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CN112266578B (en
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谢文蓓
李�浩
陈宗琪
邹廷军
杨生冬
黄明近
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Guangdong Chuangbu Industry Co ltd
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Guangdong Chuangbu Industry Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C08L63/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/06—Unsaturated polyesters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The invention provides a solar photovoltaic support which comprises a plurality of supporting supports, wherein the supporting supports are connected through a plurality of purlines, each supporting support comprises a cross beam, a front stand column detachably connected to one end of the cross beam, a rear stand column detachably connected to the other end of the cross beam, and a first inclined support detachably connected between the cross beam and the rear stand column, and the height of the rear stand column is higher than that of the front stand column. The solar photovoltaic bracket is prepared from 90-300 parts by weight of glass fiber, 30-100 parts by weight of resin, 40-50 parts by weight of coating felt, 3-15 parts by weight of low shrinkage additive, 10-45 parts by weight of filler, 4-18 parts by weight of ultraviolet absorbent, 4-18 parts by weight of anti-aging agent, 1-3 parts by weight of color paste, 0.3-1.2 parts by weight of internal mold release agent and 1-5 parts by weight of curing agent. The solar photovoltaic support in the scheme is made of resin as a matrix and glass fiber and composite felt as reinforced composite materials, so that the composite materials have high mechanical strength and toughness and can resist strong wind or external force impact.

Description

Solar photovoltaic bracket and preparation method thereof
Technical Field
The invention belongs to the technical field of solar photovoltaic materials, and particularly relates to a solar photovoltaic bracket and a preparation method thereof.
Background
The solar photovoltaic bracket is a special bracket designed for placing, installing and fixing a solar panel in a solar photovoltaic power generation system, and is generally made of aluminum alloy, carbon steel and stainless steel. Because the solar photovoltaic bracket is arranged outdoors and needs to face various severe environments such as acid rain areas, wind areas and sea, the solar photovoltaic bracket has higher requirements on weather resistance, aging resistance and mechanical strength. The existing solar photovoltaic bracket made of metal materials has a short service life due to poor weather resistance and corrosion resistance. In order to improve the performance of a solar photovoltaic bracket made of a metal material, the surface of the solar photovoltaic bracket is galvanized or subjected to anticorrosion treatment in the conventional method, but the method is complex to operate and needs to be maintained for many times in the using process.
Disclosure of Invention
In order to solve the technical problems, the invention provides a solar photovoltaic bracket, which comprises a plurality of supporting brackets, wherein the supporting brackets are connected through a plurality of purlines, each supporting bracket comprises a cross beam, a front upright column detachably connected to one end of the cross beam, a rear upright column detachably connected to the other end of the cross beam, and a first inclined support detachably connected between the cross beam and the rear upright column, and the height of the rear upright column is higher than that of the front upright column.
Preferably, the lower ends of the front upright post and the rear upright post are both connected with abutments.
Preferably, the middle part of the purline is provided with a connecting beam.
Preferably, a triangular support is arranged between every two purlines.
The solar photovoltaic bracket is prepared from 90-300 parts by weight of glass fiber, 30-100 parts by weight of resin, 40-50 parts by weight of coating felt, 3-15 parts by weight of low shrinkage additive, 10-45 parts by weight of filler, 4-18 parts by weight of ultraviolet absorbent, 4-18 parts by weight of anti-aging agent, 1-3 parts by weight of color paste, 0.3-1.2 parts by weight of internal mold release agent and 1-5 parts by weight of curing agent.
Preferably, the linear density of the glass fiber is 2400tex to 9600 tex.
Preferably, the coating felt is a glass fiber composite felt and/or a glass fiber chopped strand felt.
Preferably, the glass fiber composite felt is a glass fiber biaxial +/-45-degree composite felt and/or a glass fiber triaxial composite felt.
Preferably, the resin is selected from at least one of vinyl ester resin, ortho-benzene type unsaturated polyester resin and meta-benzene type unsaturated polyester resin.
Preferably, the filler is selected from at least one of calcium carbonate, talc, kaolin and aluminum hydroxide.
Preferably, the ultraviolet absorber is at least one selected from the group consisting of zinc oxide, UV-P, UV326, UV531, iron oxide and titanium dioxide.
Preferably, the curing agent is at least one selected from the group consisting of t-butyl peroxide, benzoyl peroxide, methyl ethyl ketone peroxide and isopropyl hydroperoxide.
Preferably, the low profile additive is polystyrene powder and/or polyethylene powder.
The second aspect of the present invention provides a method for preparing the solar photovoltaic bracket, which at least comprises the following steps:
(1) drawing the glass fibers into a forming mold;
(2) placing the coated felt in a forming die;
(3) adding resin, a low shrinkage additive, a filler, an ultraviolet absorbent, an anti-aging agent, color paste and an internal mold release agent into a stirring kettle in sequence, stirring, adding a curing agent, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 100-160 ℃.
Has the advantages that:
(1) the height of the rear upright post of the solar photovoltaic support in the technical scheme is higher than that of the front upright post, so that sunlight can be utilized by the solar photovoltaic panel mounted on the solar photovoltaic support to the maximum efficiency.
(2) The solar photovoltaic bracket is provided with the connecting beam and the triangular supports, so that the stability of the solar photovoltaic bracket is improved.
(3) The solar photovoltaic support in the scheme is a composite material with resin as a matrix and glass fiber and composite felt as a reinforcement, so that the composite material has high mechanical strength and toughness and can resist strong wind or external force impact.
(4) The mechanical strength of the composite material is improved by adding the fillers with a certain mesh number.
(5) According to the scheme, the low-shrinkage additive is added, so that the shrinkage rate of the resin is reduced, and the molding processability of the composite material is improved.
(6) By adding the ultraviolet absorbent and the anti-aging agent, the weather resistance and the service life of the composite material are improved, so that the photovoltaic support has a good application effect in areas such as low latitude, high altitude and sea.
(7) The composite photovoltaic support in the technical scheme has the advantages of light weight, high mechanical strength and low transportation and installation cost.
(8) Compared with a metal photovoltaic support, the composite photovoltaic support in the technical scheme has stronger corrosion resistance and weather resistance, and can greatly reduce the cost of later maintenance, replacement and the like. Compared with a metal bracket, the composite material bracket has higher production efficiency, does not need to be galvanized or subjected to anticorrosion treatment and the like, and has longer life cycle than the metal bracket subjected to anticorrosion treatment.
Drawings
Fig. 1 is a schematic view of the entire structure in embodiment 1.
Fig. 2 is a schematic view of the overall structure of the first support bracket in embodiment 1.
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Fig. 4 is a schematic structural view with a connection beam in embodiment 1.
Fig. 5 is an enlarged schematic view of a portion B in fig. 4.
Fig. 6 is a schematic structural view of the third connecting member.
1-pier, 2-first support bracket, 3-second support bracket, 4-purlin, 5-solar photovoltaic panel, 6-front upright post, 7-cross beam, 8-first inclined strut, 9-rear upright post, 10-first connecting piece, 11-right angle connecting piece, 12-first fixing plate, 13-first clamping groove, 14-second inclined strut, 15-connecting beam, 16-third inclined strut and 17-third connecting piece.
Detailed Description
For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In addition, the starting materials used are all commercially available, unless otherwise specified.
The first aspect of the invention provides a solar photovoltaic bracket which comprises a plurality of supporting brackets, wherein the supporting brackets are connected through a plurality of purlines, each supporting bracket comprises a cross beam, a front upright column detachably connected to one end of the cross beam, a rear upright column detachably connected to the other end of the cross beam and a first inclined support detachably connected between the cross beam and the rear upright column, and the height of the rear upright column is higher than that of the front upright column.
As a preferred technical scheme, the middle part of the purline is provided with a connecting beam.
The connecting beam is arranged in the middle of the purline, so that the stability of the solar photovoltaic support is improved.
As a preferred technical scheme, a triangular support is arranged between every two purlines.
The triangular supports are arranged between the two purlines, so that the stability of the solar photovoltaic support is further improved.
The solar photovoltaic bracket is prepared from 90-300 parts by weight of glass fiber, 30-100 parts by weight of resin, 40-50 parts by weight of coating felt, 3-15 parts by weight of low shrinkage additive, 10-45 parts by weight of filler, 4-18 parts by weight of ultraviolet absorbent, 4-18 parts by weight of anti-aging agent, 1-3 parts by weight of color paste, 0.3-1.2 parts by weight of internal mold release agent and 1-5 parts by weight of curing agent.
As a preferred technical scheme, the linear density of the glass fiber is 2400tex-9600 tex.
The linear density in the technical scheme is the gram of the weight of 1000 meters long yarn under a public moisture regain, tex is g/L1000, wherein g is the weight gram of the yarn, and L is the length meter of the yarn. It is a fixed length unit, the larger the grammage the thicker the yarn. The glass fiber in the technical scheme is untwisted yarn glass fiber, and the glass fiber is used as a reinforcing material of the composite material, so that the overall mechanical strength, the corrosion resistance and the weather resistance of the composite material are improved.
As a preferable technical scheme, the coating felt is a glass fiber composite felt and/or a glass fiber chopped strand felt.
As a preferable technical scheme, the glass fiber composite felt is a glass fiber biaxial +/-45-degree composite felt and/or a glass fiber triaxial composite felt.
As a preferred embodiment, the resin is at least one selected from the group consisting of a vinyl ester resin, a ortho-benzene type unsaturated polyester resin, and a meta-benzene type unsaturated polyester resin.
The more secondary hydroxyl groups of the vinyl ester resin can improve the wettability and the cohesiveness to the glass fiber and can improve the mechanical strength of the composite material. The o-benzene type unsaturated polyester and the m-benzene type unsaturated polyester have good toughness, heat resistance and corrosion resistance, the m-benzene type unsaturated polyester resin has high purity, no low molecular weight impurities remain, the m-benzene type unsaturated polyester resin has good toughness, ester bonds of the m-benzene type unsaturated polyester resin are protected by a steric hindrance effect, and the m-benzene type unsaturated polyester resin has high corrosion resistance. The o-benzene type unsaturated polyester resin has better processing and forming properties, and no micromolecules are generated in the processing process.
As a preferred technical scheme, the filler is selected from at least one of calcium carbonate, talcum powder, kaolin and aluminum hydroxide.
The filler has a great influence on the mechanical properties of the composite material, and generally speaking, the filler can divide the polymer matrix in a continuous phase, so that the combination effect of the polymer matrix and the glass fibers is influenced, and the performance of the composite material is reduced. If the addition amount and the mesh number of the filler are controlled, the filler is uniformly distributed in the polymer matrix, and the performance of the composite material is improved to a certain extent.
As a preferable technical scheme, the ultraviolet absorbent is at least one selected from zinc oxide, UV-P, UV326, UV531, ferric oxide and titanium dioxide.
Can inhibit and delay the ultraviolet light from causing the photo-aging of the polymer and prolong the service life of the composite material.
In a preferred embodiment, the curing agent is at least one selected from the group consisting of t-butyl peroxide, benzoyl peroxide, methyl ethyl ketone peroxide and isopropyl hydroperoxide.
The resin curing is carried out by carrying out chemical reactions such as condensation, ring closure, addition or catalysis to enable the thermosetting resin to generate an irreversible change process, and the curing is completed by adding a curing agent.
As a preferred technical scheme, the low-shrinkage additive is polystyrene powder and/or polyethylene powder.
Resin units are densely packed and nucleate during polymerization of the resin, which may cause polymerization shrinkage and thermal shrinkage of the resin. The internal stress caused by shrinkage causes the resin to sink inwards from the surface, and the sink gradually transfers from the surface to the center of the polymer, releasing the internal stress until equilibrium, which directly causes defects to occur. The low shrinkage additive has the function of compensating polymerization shrinkage by releasing internal stress through local relaxation, so that the effect of reducing shrinkage is achieved. The polystyrene powder or polyethylene powder low shrinkage additive and resin form a two-phase system before the resin is cured, and the curing shrinkage of the resin is inhibited by simply utilizing the thermal expansibility of the thermoplastic resin.
The second aspect of the present invention provides a method for preparing the solar photovoltaic bracket, which at least comprises the following steps:
(1) leading out the glass fiber from the sand rack, sequentially passing through the yarn arranging plate, the rubber groove yarn plate and the preforming mold, and finally putting the glass fiber into the forming mold;
(2) placing the coated felt on a felt frame, then passing through a preformed mold preformed hole to coat the outer side of the glass fiber, and finally entering a forming mold;
(3) adding resin, a low shrinkage additive, a filler, an ultraviolet absorbent, an anti-aging agent, color paste and an internal mold release agent into a stirring kettle in sequence, stirring, adding a curing agent, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 100-160 ℃.
Example 1
As shown in fig. 1 to 6, a first aspect of the embodiment provides a solar photovoltaic support, which includes 2 support brackets, a first support bracket 2 and a second support bracket 3, which are identical in structure, respectively, the 2 support brackets are connected with each other through 6 purlins 4, a solar photovoltaic panel 5 is installed on the purlins 4, the first support bracket 2 includes a cross beam 7, a front upright 6 connected to one end of the cross beam 7 through a first connecting member 10, a rear upright 9 connected to the other end of the cross beam 7 through a first connecting member 10, and a first inclined support 8 connected between the cross beam 7 and the rear upright 9 through a first connecting member 10, and the height of the rear upright 9 is higher than that of the front upright 6. The height of the rear upright post 9 of the solar photovoltaic bracket is higher than that of the front upright post 6, so that the solar photovoltaic panel arranged on the solar photovoltaic bracket can utilize sunlight with maximum efficiency. Front column 6 with the lower extreme of rear column 9 all is connected with pier 1, and first bracing 8 can improve the stability ability of first support bracket 2, and first connecting piece 10 realizes through the screw that detachable is connected. One end of the purline 4 is connected with the first supporting bracket 2 through a second connecting piece, and the other end of the purline 4 is connected with the second supporting bracket 3 through a second connecting piece. The second connecting member includes a first clamping groove 13, and a first fixing plate 12 fixedly connected to the first clamping groove 13. The connecting beam 15 is arranged in the middle of the purline 4, so that the stability of the solar photovoltaic support is improved. And a triangular support is arranged between every two purlines 4, so that the stability of the solar photovoltaic support is further improved. The triangular supports comprise second inclined supports 14 and third inclined supports 16, one ends of the second inclined supports 14 and one ends of the third inclined supports 16 are connected to the purlines 4 through right-angle connecting pieces 11, and the other ends of the second inclined supports 14 and the other ends of the third inclined supports 16 are connected to the other purline through third connecting pieces 17. The raw materials of the first connecting piece 10, the second connecting piece and the third connecting piece 17 are the same as those of the solar photovoltaic bracket.
The solar photovoltaic bracket is prepared from 90 parts by weight of glass fiber, 30 parts by weight of resin, 40 parts by weight of coating felt, 3 parts by weight of low shrinkage additive, 10 parts by weight of filler, 4 parts by weight of ultraviolet absorbent, 4 parts by weight of anti-aging agent, 1 part by weight of color paste, 0.3 part by weight of internal mold release agent and 1 part by weight of curing agent. The glass fiber is 4800tex roving, the glass fiber is purchased from double-dragon glass fiber factory, the goods number: 01. the resin is a vinyl ester resin, purchased from jinglingli resins ltd, cat #: 430 LV. The clad felt is a glass fiber biaxial +/-45-degree composite felt which is purchased from Zhongjie composite material Co., Ltd, and has a product number of: EBX.
The low-shrinkage additive is a mixture of polyethylene powder and polystyrene powder, and the mass ratio of the polyethylene powder to the polystyrene powder is 1: 2, the mesh number of the polyethylene powder is 400, and the polyethylene powder is purchased from Bolin plastic Co., Ltd, Dongguan city, and the product number is as follows: and BL 220. The mesh number of the polystyrene powder is 300 meshes, and the polystyrene powder is purchased from Showa high polymer material Limited company in Shenzhen, and the cargo number is as follows: PS.
The filler is calcium carbonate, the calcium carbonate is light calcium carbonate with 800 meshes, and the light calcium carbonate is purchased from Guangzhou Haosheng new materials Co., Ltd., CAS No.: 471-34-1.
The ultraviolet absorber is UV-P, available from plastication Co., Ltd, Shangguan, CAS number: 2240-22-4.
The anti-aging agent is Pasf Irgafos168 which is purchased from Kangjin New Material science and technology Limited, Dongguan city, CAS number: 31570-04-4.
The color paste is oily white color paste, and is purchased from leap rain building materials science and technology Limited company in Fushan City, with the product number: and (7) SP.
The curing agent is a mixture of benzoyl peroxide and tert-butyl peroxide, and the mass ratio of the benzoyl peroxide to the tert-butyl peroxide is 1: 1, said benzoyl peroxide is available from aksunobel, cat #: CH-50, said t-butyl peroxide is available from Acksonobel, cat #: TRIGONOXC. The internal release agent is purchased from Shandong Zhongzhentai chemical industry Co., Ltd, and has a cargo number: Q/HT 003-2006.
A second aspect of this embodiment provides a method for manufacturing the solar photovoltaic bracket, including the following steps:
(1) leading out the glass fiber from the sand rack, sequentially passing through the yarn arranging plate, the rubber groove yarn plate and the preforming mold, and finally putting the glass fiber into the forming mold;
(2) placing the coated felt on a felt frame, then passing through a preformed mold preformed hole to coat the outer side of the glass fiber, and finally entering a forming mold;
(3) sequentially adding vinyl ester resin, polyethylene powder, polystyrene powder, calcium carbonate, UV-P, an anti-aging agent, color paste and an internal release agent into a stirring kettle, stirring, adding benzoyl peroxide and tert-butyl peroxide, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 140-160 ℃.
Example 2
The difference between this example and example 1 is that: the solar photovoltaic bracket comprises the following preparation raw materials, by weight, 300 parts of glass fiber, 100 parts of resin, 50 parts of a coating felt, 15 parts of a low shrinkage additive, 45 parts of a filler, 18 parts of an ultraviolet absorbent, 18 parts of an anti-aging agent, 3 parts of color paste, 1.2 parts of an internal mold release agent and 5 parts of a curing agent. The glass fiber is 4800tex roving, the glass fiber is purchased from double-dragon glass fiber factory, the goods number: 01. the resin is o-benzene type unsaturated polyester resin
From tommy bris resin limited, CAS No.: 26098-37-3. The clad felt is a glass fiber biaxial +/-45-degree composite felt which is purchased from Zhongjie composite material Co., Ltd, and has a product number of: EBX. The low-shrinkage additive is a mixture of polyethylene powder and polystyrene powder, and the mass ratio of the polyethylene powder to the polystyrene powder is 1: 2, the mesh number of the polyethylene powder is 400, and the polyethylene powder is purchased from Bolin plastic Co., Ltd, Dongguan city, and the product number is as follows: and BL 220. The mesh number of the polystyrene powder is 300 meshes, and the polystyrene powder is purchased from Showa high polymer material Limited company in Shenzhen, and the cargo number is as follows: PS.
The filler is calcium carbonate, the calcium carbonate is light calcium carbonate with 800 meshes, and the light calcium carbonate is purchased from Guangzhou Haosheng new materials Co., Ltd., CAS No.: 471-34-1.
The ultraviolet absorbent is UV-P which is purchased from Kangjin New Material science and technology Co., Ltd, of Dongguan city, CAS number: 1843-05-6.
The anti-aging agent is Pasf Irganox 1010 which is purchased from Kangjin New Material science and technology Co., Ltd, available in Dongguan city, CAS number: 6683-19-8.
The color paste is oily white color paste, and is purchased from leap rain building materials science and technology Limited company in Fushan City, with the product number: and (7) SP.
The curing agent is a mixture of benzoyl peroxide and tert-butyl peroxide, and the mass ratio of the benzoyl peroxide to the tert-butyl peroxide is 1: 1, said benzoyl peroxide is available from aksunobel, cat #: CH-50, said t-butyl peroxide is available from Acksonobel, cat #: TRIGONOXC. The internal release agent is purchased from Shandong Zhongzhentai chemical industry Co., Ltd, and has a cargo number: Q/HT 003-2006.
A second aspect of this embodiment provides a method for manufacturing the solar photovoltaic bracket, including the following steps:
(1) leading out the glass fiber from the sand rack, sequentially passing through the yarn arranging plate, the rubber groove yarn plate and the preforming mold, and finally putting the glass fiber into the forming mold;
(2) placing the coated felt on a felt frame, then passing through a preformed mold preformed hole to coat the outer side of the glass fiber, and finally entering a forming mold;
(3) sequentially adding o-benzene type unsaturated polyester resin, polyethylene powder, polystyrene powder, calcium carbonate, UV-P, an anti-aging agent, color paste and an internal release agent into a stirring kettle, stirring, adding benzoyl peroxide and tert-butyl peroxide, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 140-160 ℃.
Example 3
The difference between this example and example 1 is that: the solar photovoltaic bracket comprises the following preparation raw materials, by weight, 240 parts of glass fiber, 100 parts of resin, 40 parts of a coating felt, 10 parts of a low shrinkage additive, 35 parts of a filler, 8 parts of an ultraviolet absorbent, 10 parts of an anti-aging agent, 2.5 parts of color paste, 1 part of an internal mold release agent and 2.5 parts of a curing agent. The glass fiber is 4800tex roving, the glass fiber is purchased from double-dragon glass fiber factory, the goods number: 01. the resin is m-benzene unsaturated polyester resin, which is purchased from Changxing synthetic resin Limited company, and has a product number of: 2846 AP-H. The clad felt is a glass fiber biaxial +/-45-degree composite felt which is purchased from Zhongjie composite material Co., Ltd, and has a product number of: EBX.
The low-shrinkage additive is a mixture of polyethylene powder and polystyrene powder, and the mass ratio of the polyethylene powder to the polystyrene powder is 1: 2, the mesh number of the polyethylene powder is 400, and the polyethylene powder is purchased from Bolin plastic Co., Ltd, Dongguan city, and the product number is as follows: and BL 220. The mesh number of the polystyrene powder is 300 meshes, and the polystyrene powder is purchased from Showa high polymer material Limited company in Shenzhen, and the cargo number is as follows: PS.
The filler is calcium carbonate, the calcium carbonate is light calcium carbonate with 800 meshes, and the light calcium carbonate is purchased from Guangzhou Haosheng new materials Co., Ltd., CAS No.: 471-34-1.
The ultraviolet absorbent is UV-531, is purchased from Dongguan Yisheng chemical company, and has a product number of: GA 6.
The anti-aging agent is Pasf Irganox 1010 which is purchased from Kangjin New Material science and technology Co., Ltd, available in Dongguan city, CAS number: 6683-19-8.
The color paste is oily white color paste, and is purchased from leap rain building materials science and technology Limited company in Fushan City, with the product number: and (7) SP.
The curing agent is a mixture of benzoyl peroxide and tert-butyl peroxide, and the mass ratio of the benzoyl peroxide to the tert-butyl peroxide is 1: 1, said benzoyl peroxide is available from aksunobel, cat #: CH-50, said t-butyl peroxide is available from Acksonobel, cat #: TRIGONOXC. The internal release agent is purchased from Shandong Zhongzhentai chemical industry Co., Ltd, and has a cargo number: Q/HT 003-2006.
A second aspect of this embodiment provides a method for manufacturing the solar photovoltaic bracket, including the following steps:
(1) leading out the glass fiber from the sand rack, sequentially passing through the yarn arranging plate, the rubber groove yarn plate and the preforming mold, and finally putting the glass fiber into the forming mold;
(2) placing the coated felt on a felt frame, then passing through a preformed mold preformed hole to coat the outer side of the glass fiber, and finally entering a forming mold;
(3) sequentially adding m-benzene unsaturated polyester resin, polyethylene powder, polystyrene powder, calcium carbonate, UV-P, an anti-aging agent, color paste and an internal release agent into a stirring kettle, stirring, adding benzoyl peroxide and tert-butyl peroxide, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 140-160 ℃.
Example 4
The difference between this example and example 1 is that: the solar photovoltaic bracket comprises the following preparation raw materials, by weight, 270 parts of glass fiber, 100 parts of resin, 40 parts of a coating felt, 12 parts of a low shrinkage additive, 40 parts of a filler, 8 parts of an ultraviolet absorbent, 10 parts of an anti-aging agent, 3 parts of color paste, 1 part of an internal mold release agent and 3 parts of a curing agent. The glass fiber is 4800tex roving, the glass fiber is purchased from double-dragon glass fiber factory, the goods number: 01. the resin is m-benzene unsaturated polyester resin, which is purchased from Changxing synthetic resin Limited company, and has a product number of: 2846 AP-H. The clad felt is a glass fiber biaxial +/-45-degree composite felt which is purchased from Zhongjie composite material Co., Ltd, and has a product number of: EBX.
The low-shrinkage additive is a mixture of polyethylene powder and polystyrene powder, and the mass ratio of the polyethylene powder to the polystyrene powder is 1: 2, the mesh number of the polyethylene powder is 400, and the polyethylene powder is purchased from Bolin plastic Co., Ltd, Dongguan city, and the product number is as follows: and BL 220. The mesh number of the polystyrene powder is 300 meshes, and the polystyrene powder is purchased from Showa high polymer material Limited company in Shenzhen, and the cargo number is as follows: PS.
The filler is calcium carbonate, the calcium carbonate is light calcium carbonate with 800 meshes, and the light calcium carbonate is purchased from Guangzhou Haosheng new materials Co., Ltd., CAS No.: 471-34-1.
The ultraviolet absorbent is UV-531, is purchased from Dongguan Yisheng chemical company, and has a product number of: GA 6.
The anti-aging agent is Pasf Irganox 1010 which is purchased from Kangjin New Material science and technology Co., Ltd, available in Dongguan city, CAS number: 6683-19-8.
The color paste is oily white color paste, and is purchased from leap rain building materials science and technology Limited company in Fushan City, with the product number: and (7) SP.
The curing agent is a mixture of benzoyl peroxide and tert-butyl peroxide, and the mass ratio of the benzoyl peroxide to the tert-butyl peroxide is 1: 1, said benzoyl peroxide is available from aksunobel, cat #: CH-50, said t-butyl peroxide is available from Acksonobel, cat #: TRIGONOXC. The internal release agent is purchased from Shandong Zhongzhentai chemical industry Co., Ltd, and has a cargo number: Q/HT 003-2006.
A second aspect of this embodiment provides a method for manufacturing the solar photovoltaic bracket, including the following steps:
(1) leading out the glass fiber from the sand rack, sequentially passing through the yarn arranging plate, the rubber groove yarn plate and the preforming mold, and finally putting the glass fiber into the forming mold;
(2) placing the coated felt on a felt frame, then passing through a preformed mold preformed hole to coat the outer side of the glass fiber, and finally entering a forming mold;
(3) sequentially adding m-benzene unsaturated polyester resin, polyethylene powder, polystyrene powder, calcium carbonate, UV-P, an anti-aging agent, color paste and an internal release agent into a stirring kettle, stirring, adding benzoyl peroxide and tert-butyl peroxide, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 140-160 ℃.
Comparative example 1
The difference between this example and example 1 is that the filler is silica, the mesh number of the silica is 800 mesh, and the silica is obtained from Shijiazhu, Bai chemical technology Co., Ltd., product number: A130.
comparative example 2
This example is different from example 1 in that no filler is contained in this example.
Comparative example 3
This example is different from example 2 in that the filler in this example is 50 parts. The filler is calcium carbonate, the calcium carbonate is light calcium carbonate, the mesh number of the light calcium carbonate is 800, and the light calcium carbonate is purchased from Guangzhou Haosheng new material Co., Ltd, CAS number: 471-34-1.
Comparative example 4
The difference between this example and example 1 is that the filler in this example is calcium carbonate, which is precipitated calcium carbonate having a mesh size of 325 mesh. The light calcium carbonate was purchased from Guangzhou Haosheng New materials, Inc., CAS number: 471-34-1.
Comparative example 5
The difference between this example and example 1 is that the filler in this example is calcium carbonate, which is precipitated calcium carbonate, and the mesh number of the precipitated calcium carbonate is 1250 mesh. The light calcium carbonate was purchased from Guangzhou Haosheng New materials, Inc., CAS number: 471-34-1.
Performance testing
Testing one: the samples obtained in examples 1-4 and comparative examples 1-5 were subjected to an impact strength test with reference to GB/T1451-2005.
And (2) testing: the samples obtained in examples 1-4 and comparative examples 1-5 were subjected to a tensile strength test in the lengthwise direction with reference to GB/T1447-.
And (3) testing: the samples obtained in examples 1-4 and comparative examples 1-5 were subjected to a bending strength test in the lengthwise direction with reference to GB/T1449-.
And (4) testing: the samples obtained in examples 1-4 and comparative examples 1-5 were subjected to a compressive strength test in the lengthwise direction with reference to GB/T1448-.
And testing: the samples obtained in examples 1 to 4 and comparative examples 1 to 5 were subjected to a compressive strength test in the width direction with reference to GB/T1448-.
And (6) testing: 10 parts of the samples obtained in examples 1 to 4 and comparative examples 1 to 5 were prepared, and the samples were placed in a saturated sodium chloride solution at 50 ℃ for 100 days, and after 100 days, the surface of the obtained samples was observed to have any corrosion mark for evaluating the corrosion resistance, wherein 0 to 1 part of the samples had a change in corrosion resistance, and the samples had excellent corrosion resistance, 2 to 4 parts of the samples had a change in corrosion resistance, and 5 to 10 parts of the samples had a change in corrosion resistance, and the samples had poor corrosion resistance.
Figure BDA0002691290320000171
Figure BDA0002691290320000181
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a solar photovoltaic support, its characterized in that includes a plurality of support brackets, be connected through a plurality of purlins between the support bracket, the support bracket includes that crossbeam, detachable connect in the front column of crossbeam one end, detachable connect in the back stand of the crossbeam other end, detachable connect in the first bracing between crossbeam and back stand, the height that highly is higher than the front column of back stand.
2. The solar photovoltaic bracket of claim 1, wherein a connecting beam is mounted in the middle of the purlin.
3. The solar photovoltaic bracket of claim 2, wherein a triangular brace is mounted between every two purlins.
4. The solar photovoltaic bracket as claimed in any one of claims 1 to 3, wherein the raw materials for preparing the solar photovoltaic bracket comprise, by weight, 90 to 300 parts of glass fiber, 30 to 100 parts of resin, 40 to 50 parts of coating felt, 3 to 15 parts of low shrinkage additive, 10 to 45 parts of filler, 4 to 18 parts of ultraviolet absorber, 4 to 18 parts of anti-aging agent, 1 to 3 parts of color paste, 0.3 to 1.2 parts of internal mold release agent and 1 to 5 parts of curing agent.
5. The solar photovoltaic mount of claim 4, wherein the linear density of the glass fibers is 2400tex to 9600 tex.
6. The solar photovoltaic support according to claim 5, wherein the clad mat is a glass fiber composite mat and/or a glass fiber chopped mat.
7. The solar photovoltaic mount of claim 6, wherein the resin is selected from at least one of a vinyl ester resin, an ortho-benzene type unsaturated polyester resin, and a meta-benzene type unsaturated polyester resin.
8. The solar photovoltaic support according to claim 7, wherein the filler is selected from at least one of calcium carbonate, talc, kaolin, and aluminum hydroxide.
9. The solar photovoltaic mount of claim 8, wherein the curing agent is selected from at least one of t-butyl peroxide, benzoyl peroxide, methyl ethyl ketone peroxide, and isopropyl hydroperoxide.
10. A method for manufacturing a solar photovoltaic support according to any one of claims 4 to 9, characterized in that it comprises at least the following steps:
(1) drawing the glass fibers into a forming mold;
(2) placing the coated felt in a forming die;
(3) adding resin, a low shrinkage additive, a filler, an ultraviolet absorbent, an anti-aging agent, color paste and an internal mold release agent into a stirring kettle in sequence, stirring, adding a curing agent, and stirring to obtain a mixture A;
(4) and introducing the mixture A into a forming mold, and fixing and forming the mixture A, the glass fiber and the coated felt at the temperature of 100-160 ℃.
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JP2002060608A (en) * 2000-08-19 2002-02-26 Hyundai Motor Co Ltd Thermosetting resin composition for vehicle body outer panel
CN101157795A (en) * 2007-09-30 2008-04-09 潘锦荣 Resin mixture and glass reinforced plastic section bar prepared thereby
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