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From the choice of use, it is good to choose a resin with medium epoxy value (such as; When making castables, it is good to choose resins with high epoxy value (>, such as; For coatings, low epoxy value (such as etc.) is generally used for coatings. 1. Choose from the mechanical strength of the resin with high epoxy value is stronger, but more brittle; The strength is good at high and low temperatures with medium epoxy value; Those with low epoxy value have worse strength at high temperatures. Because the strength is related to the size of the cross-linking, the cross-linking degree is also high after curing with a high epoxy value, and the cross-linking degree is also low after curing with a low epoxy value, so it causes a difference in strength.
2. Choose from the operation requirements No need to resist high temperature, the strength requirements are not large, and it is hoped that the epoxy resin can dry quickly and is not easy to be lost
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Epoxy board: The glass fiber cloth is bonded with epoxy resin and made by heating and pressure, which has high mechanical properties at medium temperature and stable electrical properties under high humidity. It is suitable for high insulation structural parts for machinery, electrical appliances and electronics, with high mechanical and dielectric properties, good heat resistance and moisture resistance.
Heat resistance class F (155 degrees).
Specification thickness: deformed by heating at a high temperature of 180, generally not heated with other metals, which may cause deformation of metal plates.
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Summary. Hello! Dear, I am glad to answer for you, the function of epoxy board is to manufacture insulating components in electronic products, such as transformers, DC motors, switchgear, etc.
Epoxy board, also known as epoxy glass fiber board, epoxy phenolic laminated glass cloth board, model 3240, epoxy resin is a general refers to organic polymer compounds containing two or more epoxy groups in the molecule, except for a few, their relative molecular weight is not high.
Hello! Dear, I am glad to answer for you, the function of epoxy board is to make and lack of insulation components in electronic products, such as transformers, DC motors, switchgear, etc. Epoxy board, also known as epoxy fiberglass board, epoxy phenolic laminated glass quietly pin cloth board, model 3240, epoxy resin is a general molecular containing two or more epoxy groups in the organic polymer compound, except for a few, their relative molecular weight is not high.
The main use of epoxy board: epoxy rock slab can generally be erected to be used as a heat insulation board. An epoxy plate of the same size as the bottom plate is added to the front and rear splints of the mold to isolate heat and save energy.
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Epoxy board is often used in industry, but many people do not know much about epoxy board, because the production and processing methods of epoxy board are more complex, so what material is epoxy board? Let's take a look at what material epoxy board is and how to buy epoxy fiberglass board, if you want to know, read on!
1. What is the material of epoxy board?
Epoxy board, also known as epoxy fiberglass board, is made of epoxy resin bonded and heated and pressurized through processes such as bonding, which has high mechanical properties in a medium temperature environment, stable electrical properties in a high temperature environment, good moisture resistance and heat resistance, and contains active epoxy groups, which form non-melting and insoluble after cross-linking reaction with a variety of curing agents.
Second, how to buy epoxy fiberglass board.
1. Many people are very concerned about the quality of epoxy fiberglass board when buying epoxy fiberglass board, and it is easy to be attracted by cheap products, but epoxy fiberglass is made of resin by heating and pressurizing, and the cost of light rags per kilogram is about two yuan, and the cost of epoxy resin is higher, so the quality of epoxy fiberglass board cannot be guaranteed.
2. Before buying epoxy fiberglass, you should ask the merchant for a sample of epoxy fiberglass, after getting the sample, you can see how the flatness of the epoxy fiberglass board is starved, and then ask the merchant to show product parameters, reports and other information, if the merchant can provide all the materials, there is basically no quality problem.
3. Under normal circumstances, the sample of epoxy fiberglass is only A4 size, that is to say, the sample of epoxy fiberglass you see is only a small part of the product, so it is necessary to observe the uniformity, texture and color of the product to distinguish the quality of the product. Rotten acres.
Summary: What is the material of epoxy board is introduced to you here, when buying epoxy board, you should go to a regular store to buy, so as not to buy fake and shoddy products. If you want to know more about decoration, you can pay attention to the relevant information of Qeeka Home.
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3240 epoxy board.
Product Description: This product epoxy board: glass fiber cloth is made of epoxy resin bonded by heating and pressure, model 3240, high mechanical properties at medium temperature, stable electrical performance at high temperature.
It is suitable for high insulation structural parts for machinery, electrical appliances and electronics, with high mechanical and dielectric properties, good heat resistance and moisture resistance. Heat resistance class F (155 degrees).
Specification thickness: Conventional specification: 1000mm*2000mm
Color: Yellow.
Origin: Domestic.
In the case of high temperature 180, it is not heated with other metals, which may cause deformation of metal sheets.
This paragraph Material Introduction Epoxy resin is an organic polymer compound containing two or more epoxy groups in the molecule, and their relative molecular weight is not high except for a few. The molecular structure of epoxy resin is characterized by the presence of active epoxy groups in the molecular chain, which can be located at the end, middle or in a cyclic structure of the molecular chain. Because the molecular structure contains active epoxy groups, they can be cross-linked with various types of loose curing agents to form insoluble, non-meltable polymers with a three-way network structure.
This paragraph Application characteristics 1. Various forms. A wide range of resins, curing agents, and modifier systems can be adapted to almost every application, and can range from very low viscosity to high melting point solids.
2. Easy curing. With a wide range of curing agents, epoxy systems can be cured in the temperature range of almost 0 180.
3. Strong adhesion. The presence of polar hydroxyl and ether bonds inherent in the molecular chain of epoxy resin gives it high adhesion to various substances. Epoxy resins have low shrinkage when cured, resulting in less internal stress, and this extremity also helps to improve adhesion strength.
4. Low shrinkage. The reaction between the epoxy resin and the curing agent used is carried out by direct addition reaction or ring-opening polymerization of the epoxy group in the resin molecule, and no water or other volatile by-products are released. Compared to unsaturated polyester resins and phenolic resins, they show very low shrinkage (less than 2%) during curing.
5. Mechanical properties. The cured epoxy resin system has excellent mechanical properties.
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Epoxy board, also known as epoxy fiberglass board, is made by bonding epoxy resin and heating and pressurization.
It has high mechanical properties in a medium temperature environment, stable electrical properties in a high temperature environment, and has good moisture resistance and heat resistance. And it contains active epoxy groups, which form non-melting and insoluble after cross-linking reaction with a variety of curing agents.
The cost per kilogram of light rags is not low, and the cost of epoxy resin is even higher, so the quality of epoxy fiberglass board can not be guaranteed.
Basic introduction to epoxy boards
Epoxy board materials are mainly used in the production of holster support plates, motor insulation processing parts, welding copper wire waist, solar gasket plates, gift bag support plates, various reinforcing plates, sports equipment, motorcycles, umbrella bones, carbon fiber flashlights, fireproof partitions, test benches, fixtures, etc., epoxy plate railway processing parts arc resistance, good machinability, but also have flame retardant properties, can be used at a temperature of 150, strong chemical properties, do not have to worry about being corroded when encountering acid and alkali solutions.
In case the temperature is too high, its flame retardant ability makes it self-extinguishing after burning away from the source, and the epoxy plate processing parts are wear-resistant and have a longer service life, which can greatly reduce the cost of replacing parts.
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Summary. Due to the poor thermal conductivity of epoxy plates, it is very tool-intensive to cut epoxy plates, so it is best to use carbide tools or diamond tools when machining epoxy plates. These two tools are resistant to high temperatures and wear, and are the most suitable tools for machining epoxy plates.
What equipment is used to press epoxy plates.
Due to the poor thermal conductivity of epoxy plates, it is very tool-intensive to cut epoxy plates, so it is best to use carbide tools or diamond tools when machining epoxy plates. These two tools are resistant to high temperatures and wear, and are the most suitable tools for machining epoxy plates.
Modified PPS pressure plate.
PPS pressure plate: It is a new type of high-performance thermoplastic resin, which has the advantages of high mechanical strength, high temperature resistance, chemical resistance, flame retardancy, good thermal stability and excellent electrical properties. It is characterized by general strength and good rigidity, but brittleness, easy to produce stress embrittlement, and is not resistant to organic solvents such as benzene gasoline.
The long-term use temperature can reach 260 degrees Celsius, and it remains stable in air or nitrogen at 400 degrees. By adding glass fiber or other reinforcing materials to modify, the impact strength can be greatly improved, the heat resistance and other mechanical properties are also improved, the density is increased, and the molding shrinkage is small enough to be suitable for making heat-resistant parts
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Summary. Normally, the pressing equipment of epoxy board mainly includes the following categories:1
Conventional presses: Conventional presses usually use hydraulic or mechanical pressure to press epoxy plates, and their pressing pressure and temperature can be adjusted according to different materials and processes. 2.
Hot press machine: The hot press machine adds a heating function on the basis of the conventional press, which can heat the epoxy plate during the pressing process to improve the fluidity and adhesion of the material, so as to obtain a better pressing effect. 3.
Molding machine: The molding machine is a professional epoxy board pressing equipment, which can accurately press and form the epoxy board through the mold. The molding machine is usually equipped with an automatic control system, which can accurately control parameters such as temperature, pressure, and time to ensure product quality and stability.
To sum up, the pressing of epoxy board requires the use of professional epoxy plate pressing equipment, conventional presses, hot presses and molding machines can be used to press epoxy plates, the specific choice depends on the pressing requirements and process characteristics.
What equipment is used to press epoxy plates.
Normally, the pressing equipment of epoxy board mainly includes the following categories:1Conventional Presses:
Conventional presses usually use hydraulic or mechanical pressure to press the epoxy panels, and the pressing pressure and temperature can be adjusted according to different materials and processes. 2.Hot Press Machine:
The hot press adds a heating function on the basis of the conventional press, which can heat the epoxy plate during the pressing process to improve the fluidity and adhesion of the material, so as to obtain a better pressing effect. 3.Molding Press:
The molding machine is a professional epoxy board pressing equipment, which can accurately press and form the epoxy board through the mold. The molding machine is usually equipped with an automatic control system, which can accurately control parameters such as temperature, pressure, and time to ensure product quality and stability. To sum up, the pressing of epoxy board requires the use of professional epoxy plate pressing equipment, conventional presses, hot presses and molding machines can be used to press epoxy plates, the specific choice depends on the pressing requirements and process characteristics.
Epoxy board is a high-performance insulating material, which is widely used in electronics, communications, aviation, aerospace and other fields. When making epoxy boards, it is necessary to use professional pressing equipment to press epoxy resin into sheets with materials such as glass cloth or paper.
As mentioned above, the pressing of epoxy board requires the use of professional epoxy plate pressing equipment, conventional presses, hot presses and molding machines can be used to press epoxy plates, and the specific choice depends on the pressing requirements and process characteristics.
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