CN114957919A - High-reflection heat-insulation glass fiber reinforced plastic and preparation method thereof - Google Patents
High-reflection heat-insulation glass fiber reinforced plastic and preparation method thereof Download PDFInfo
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- CN114957919A CN114957919A CN202210664120.6A CN202210664120A CN114957919A CN 114957919 A CN114957919 A CN 114957919A CN 202210664120 A CN202210664120 A CN 202210664120A CN 114957919 A CN114957919 A CN 114957919A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Moulding By Coating Moulds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention relates to the technical field of composite materials, and aims to provide a high-reflection heat-insulation glass fiber reinforced plastic and a preparation method thereof, wherein epoxy resin and acrylic resin are selected as matrix resin, polyimide fiber is adopted as a reinforcing agent, metal oxide powder is adopted as a reflecting agent, and polyisocyanate or biuret is adopted as a curing agent, and after blending, hot-press molding is carried out to obtain the high-reflection heat-insulation glass fiber reinforced plastic; the high-reflection heat-insulation glass fiber reinforced plastic obtained by the invention has the characteristic of high near-infrared reflectivity, and has the advantages of reducing the heat accumulation condition on the surface of the glass fiber reinforced plastic, further hindering the penetrability of ultraviolet rays and prolonging the service life of a carrier material.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to high-reflection heat-insulation glass fiber reinforced plastic and a preparation method thereof.
Background
The glass steel on the surfaces of the cold chain carriage and the glass fiber reinforced plastic house has high-temperature heat accumulation on the surfaces under the irradiation of the sun, increases energy consumption, does not have the capacity of blocking ultraviolet rays, and reduces the service life of the heat-insulating layer. At present, glass fiber reinforced plastic materials in the market are all designed to have low reflectivity and poor cooling effect. In order to improve the cooling effect, later measures such as coating white heat insulation paint or increasing a heat insulation layer are usually adopted, so that the investment of material resources and manpower is increased, the weight of the carrier is increased, and the method is not beneficial to energy conservation and environmental protection.
Therefore, it is necessary to develop a high reflective insulation glass fiber reinforced plastic.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the high-reflection heat-insulation glass fiber reinforced plastic, which can reflect most of sunlight, thereby reducing the surface heat accumulation of the glass fiber reinforced plastic, further blocking the ultraviolet penetration and prolonging the service life of a carrier material.
The invention also aims to provide a preparation method of the high-reflection heat-insulation glass fiber reinforced plastic.
In order to achieve the purpose, the invention provides high-reflection heat-insulation glass fiber reinforced plastic which comprises the following raw materials in parts by weight: 60-75 parts of epoxy resin, 18-25 parts of acrylic resin, 10-20 parts of polyimide fiber, 10-15 parts of butyl acetate, 10-20 parts of metal oxide powder and 6-10 parts of curing agent; the metal oxide powder is one or more of aluminum oxide, zinc oxide and titanium dioxide; the curing agent is polyisocyanate or biuret.
Optionally, the metal oxide powder is one or more of aluminum oxide, zinc oxide and titanium dioxide.
Optionally, the curing agent is a polyisocyanate or a biuret.
Optionally, the fineness of the metal oxide powder is 400-600 meshes.
Optionally, the metal oxide powder consists of aluminum oxide, zinc oxide and titanium dioxide, and preferably 4-8 parts of aluminum oxide, 4-8 parts of zinc oxide and 2-4 parts of titanium dioxide.
A preparation method of high-reflection heat-insulation glass fiber reinforced plastic comprises the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, and heating and uniformly stirring to obtain a mixture A; metal oxide powder and a curing agent;
(2) reducing the temperature in the reaction kettle, adding butyl acetate, metal oxide powder and a curing agent into the mixture A, and continuously stirring uniformly to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
Optionally, the heating temperature in the step (1) is 180-.
Optionally, in the step (2), the temperature of the reaction kettle is reduced to 140 ℃ in the temperature range of 120-.
The metal oxide powder is used as a sunlight reflecting agent, can reflect sunlight heat radiation when added into the glass fiber reinforced plastic, has a high heat insulation effect, and effectively inhibits heat of infrared radiation from directly entering the internal environment of the glass fiber reinforced plastic, thereby solving a series of problems caused by high radiation heat.
Compared with the prior art, the invention has the following advantages: the reflectivity of the glass fiber reinforced plastic plate to external heat radiation is increased, the surface temperature is reduced, the heat accumulation is reduced, ultraviolet rays are shielded, the energy-saving and environment-friendly effects are achieved, the aging time of materials below the glass fiber reinforced plastic base surface is shortened, and the service life of equipment is prolonged.
Detailed Description
The invention is further described below with reference to examples, but the scope of the invention as claimed is not limited to the examples.
Example 1
The high-reflection heat-insulation glass fiber reinforced plastic is composed of the following raw materials in parts by weight: 60 parts of epoxy resin, 18 parts of acrylic resin, 10 parts of polyimide fiber, 15 parts of butyl acetate, 4 parts of 400-mesh aluminum oxide powder, 4 parts of 400-mesh zinc oxide powder, 2 parts of 400-mesh titanium dioxide powder and 6 parts of polyisocyanate.
The preparation method of the high-reflection heat-insulation glass fiber reinforced plastic comprises the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, heating the reaction kettle to 200 ℃, starting a stirrer, and stirring at a rotating speed of 400r/min for 30min to fully and uniformly mix the materials to obtain a mixture A;
(2) reducing the temperature of the reaction kettle to 140 ℃, adding the pre-mixed butyl acetate, aluminum oxide powder, zinc oxide powder, titanium dioxide powder and polyisocyanate into the mixture A, and continuously stirring at the rotating speed of 300r/min for 7 hours to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
Example 2
The high-reflection heat-insulation glass fiber reinforced plastic is composed of the following raw materials in parts by weight: 70 parts of epoxy resin, 22 parts of acrylic resin, 15 parts of polyimide fiber, 15 parts of butyl acetate, 4 parts of 400-mesh alumina powder, 4 parts of 400-mesh zinc oxide powder, 2 parts of 400-mesh titanium dioxide powder and 6 parts of biuret.
The preparation method of the high-reflection heat-insulation glass fiber reinforced plastic comprises the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, heating the reaction kettle to 220 ℃, starting a stirrer, and stirring at a rotating speed of 400r/min for 40min to fully and uniformly mix the epoxy resin, the acrylic resin and the polyimide fiber to obtain a mixture A;
(2) reducing the temperature of the reaction kettle to 140 ℃, adding the pre-mixed butyl acetate, aluminum oxide powder, zinc oxide powder, titanium dioxide powder and polyisocyanate into the mixture A, and continuously stirring at the rotating speed of 400r/min for 7 hours to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
Example 3
The high-reflection heat-insulation glass fiber reinforced plastic is composed of the following raw materials in parts by weight: 75 parts of epoxy resin, 25 parts of acrylic resin, 20 parts of polyimide fiber, 15 parts of butyl acetate, 4 parts of 500-mesh alumina powder, 4 parts of 500-mesh zinc oxide powder, 2 parts of 500-mesh titanium dioxide powder, 3 parts of polyisocyanate and 3 parts of biuret.
The preparation method of the high-reflection heat-insulation glass fiber reinforced plastic comprises the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, heating the reaction kettle to 220 ℃, starting a stirrer, and stirring at a rotating speed of 450r/min for 50min to fully and uniformly mix the materials to obtain a mixture A;
(2) reducing the temperature of the reaction kettle to 120 ℃, adding the premixed butyl acetate, aluminum oxide powder, zinc oxide powder, titanium dioxide powder and polyisocyanate into the mixture A, and continuously stirring at the rotating speed of 450r/min for 6 hours to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
Example 4
The high-reflection heat-insulation glass fiber reinforced plastic is composed of the following raw materials in parts by weight: 70 parts of epoxy resin, 22 parts of acrylic resin, 15 parts of polyimide fiber, 15 parts of butyl acetate, 6 parts of 500-mesh alumina powder, 4 parts of 500-mesh titanium dioxide powder and 6 parts of biuret.
The preparation method of the high-reflection heat-insulation glass fiber reinforced plastic comprises the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, heating the reaction kettle to 220 ℃, starting a stirrer, and stirring at a rotating speed of 400r/min for 40min to fully and uniformly mix the epoxy resin, the acrylic resin and the polyimide fiber to obtain a mixture A;
(2) reducing the temperature of the reaction kettle to 140 ℃, adding the pre-mixed butyl acetate, aluminum oxide powder, zinc oxide powder, titanium dioxide powder and polyisocyanate into the mixture A, and continuously stirring at the rotating speed of 400r/min for 7 hours to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
Comparative example 1
Compared with the embodiment 2, the metal oxide powder in the preparation raw material of the high-reflection heat-insulation glass fiber reinforced plastic consists of 2 parts of 400-mesh aluminum oxide powder, 2 parts of 400-mesh zinc oxide powder and 1 part of 400-mesh titanium dioxide powder, and the preparation method is the same as the embodiment 2.
Comparative example 2
Compared with the example 2, the metal oxide powder in the preparation raw material of the high-reflection heat-insulation glass fiber reinforced plastic consists of 2.5 parts of 400-mesh aluminum oxide powder and 2.5 parts of 400-mesh zinc oxide powder, and the preparation method is the same as the example 2.
Comparative example 3
Compared with the example 2, the preparation raw material of the high-reflection heat-insulation glass fiber reinforced plastic does not comprise metal oxide powder, and the preparation method is consistent with the example 2.
1. Near infrared reflectance test
The high-reflection heat-insulation glass fiber reinforced plastics obtained in examples 1 to 4 and comparative examples 1 to 3 were cut into appropriate sizes, the near-infrared solar reflectance was measured according to ASTM G159-98 using Lambda950 ultraviolet-visible near-infrared spectrophotometer, and the same sample was measured three times and averaged to obtain the data shown in Table 1 below:
TABLE 1 near-IR reflectance data sheet for different glass fiber reinforced plastics
As can be seen from table 1: examples 1-3 as the relative amount of metal oxide powder is reduced, the reflectivity of the near infrared light of the glass fiber reinforced plastic is correspondingly reduced; example 2 has the same relative content of the metal oxide powder as in example 4, but when the metal oxide powder lacks the zinc oxide powder, the reflectance of near infrared light is also reduced, but not too great. Example 2 compares with comparative examples 1-3, and the same conclusion is drawn that the reflectivity of the glass fiber reinforced plastic to near infrared light is significantly reduced when the glass fiber reinforced plastic is completely free of metal oxide powder.
2. Heat insulation test
A50 CM by 50CM box is manufactured, the top of the box is made of the glass fiber reinforced plastics of examples 1-4 and comparative examples 1-3, and the periphery of the box is made of the thermal insulation foam board with the same specification. Placing 7 boxes under the sunlight at the same time, adhering temperature sensors to the inner surfaces of the glass fiber reinforced plastics of different boxes and the bottom surfaces of the boxes, and recording the surface temperature (the inner surface of the glass fiber reinforced plastics) and the internal temperature of different boxes after 30min to obtain the data of the following table 2:
TABLE 2 insulation data for different cases
As can be seen from table 2: the insulation performance of example 1 was the best, and the insulation performance of comparative example 4 was the worst; the heat-insulating property of the glass fiber reinforced plastic corresponds to the near-infrared reflectivity of the glass fiber reinforced plastic, the higher the near-infrared reflectivity of the glass fiber reinforced plastic is, the better the heat-insulating property is, and the higher the proportion of the metal oxide powder added into the glass fiber reinforced plastic is, the higher the near-infrared reflectivity is.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The high-reflection heat-insulation glass fiber reinforced plastic is characterized by comprising the following raw materials in parts by weight: 60-75 parts of epoxy resin, 18-25 parts of acrylic resin, 10-20 parts of polyimide fiber, 10-15 parts of butyl acetate, 10-20 parts of metal oxide powder and 6-10 parts of curing agent; the metal oxide powder is one or more of aluminum oxide, zinc oxide and titanium dioxide; the curing agent is polyisocyanate or biuret.
2. The high-reflection heat-insulation glass fiber reinforced plastic according to claim 1, wherein the metal oxide powder is one or more of aluminum oxide, zinc oxide and titanium dioxide.
3. The FRP as claimed in claim 1, wherein the curing agent is polyisocyanate or biuret.
4. The glass fiber reinforced plastic with high reflection and heat insulation as claimed in claim 2, wherein the fineness of the metal oxide powder is 400-600 meshes.
5. The high-reflection heat-insulation glass fiber reinforced plastic according to claim 4, wherein the metal oxide powder consists of aluminum oxide, zinc oxide and titanium dioxide, and preferably comprises 4-8 parts of aluminum oxide, 4-8 parts of zinc oxide and 2-4 parts of titanium dioxide.
6. A method for preparing the high-reflection heat-insulation glass fiber reinforced plastic according to any one of claims 1 to 5, which is characterized by comprising the following steps:
(1) putting epoxy resin, acrylic resin and polyimide fiber into a reaction kettle, and heating and uniformly stirring to obtain a mixture A; metal oxide powder and a curing agent;
(2) reducing the temperature in the reaction kettle, adding butyl acetate, metal oxide powder and a curing agent into the mixture A, and continuously stirring uniformly to obtain a mixture B;
(3) and putting the mixture B into a mould, and performing high-temperature compression molding to obtain the high-reflection heat-insulation glass fiber reinforced plastic.
7. The method for preparing high reflective insulation glass fiber reinforced plastic according to claim 6, wherein the heating temperature in step (1) is 180-250 ℃, and the stirring is performed at a rotation speed of 300-500r/min for more than 30 min.
8. The method for preparing highly reflective and heat insulating glass fiber reinforced plastic as claimed in claim 6, wherein in the step (2), the temperature of the reaction kettle is reduced to 140 ℃ at the speed of 300-500r/min for 5-7 h.
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| CN202210664120.6A CN114957919A (en) | 2022-06-13 | 2022-06-13 | High-reflection heat-insulation glass fiber reinforced plastic and preparation method thereof |
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