Our factory covers an area of 10,000 square meters,owing 12 advanced hydraulic press and max press is 3000 tons.We also have CNC machine and surface grinding machine for sheet machining compenent part production.We have a variety of molding process means, such as molding, pultrusion, injection molding, blister, hand-made glass fiber reinforced products.We are glad to accept customer's product design and customer's requirements and will choose the most appropriate production solutions,striving to provide customers with a full range of systematic services.
Why Choose Us
Our Product
Our main products are SMC Fiberglass Insulation Sheet,GPO-3(UP GM203)Glass mat Insulation Sheet,and various SMC molded products, such as SMC medical enclosure/Shell,SMC Automobile exterior parts and other products.Our annual supply of composite material is over 3000tons.
Production Equipment
We have automatic sheet moulding compound batching equipment.12 advanced hydraulic press and max press is 3000 tons.6 CNC machines and 2 surface grinding machine.
Production Market
Our GPO-3 UPGM203 and SMC Insulation sheet,machining compenent parts and FRP pultruded profile,moulded product exported U.S market,Europe market such as Germany,Italy,Spain,France,Czech,Asian market of Malaysia,Vietnam,India and middle east market.
Our Service
We have benn always adhering to the business philophy of "customer-oriented, quality-assured, continuous improvement" and provides high quality environmental protection and high performance insulation materials for our customers.
GPO-3 is a fibreglass laminate with excellent thermal, mechanical, and electrical qualities for applications up to 155°C. It is made of polyester resin reinforced with fibreglass mat foundation.
UTR GPO-3 Electrical Grade Fiberglass Unsaturation Resin Sheet
UTR sheet,als known as GPO-3 sheet,UPGM203 sheet, is a thermoset unsaturation polyester polymer with fiberglass mat reinforcement.
Thickness 30mm GPO-3 Molded Red Insulation Sheet
Unsaturated Polyester Glass Mat is known by the initials UPGM203. Since 2002, we have focused on producing UPGM203 sheet (also known as GPO-3 sheet). We are a reputable firm that combines the production of UPGM203 sheet with Glass Mat prepreg.
Electrical Grade GPO-3 Sheet For Arc Isolators
GP0-3 board is made of alkali free glass fiber felt sheet immersed with unsaturated polyester resin add additive by hot press to form into hard sheet insulation. GPO-3 is a glass reinforced thermoset polyester sheet material.
Unsaturation Resin Fiberglass Electrical Insulating Board
SMC Insulation Board is a multivalent electrical insulating rigid sheet made of fiberglass impregnated with high-grade polyester resin and various additives and pressed at high temperatures.
GPO-1 GPO-2 GPO-3 Fibreglass Laminate Sheet
GPO-1 GPO-2 GPO-3 are created from a mixture of randomly arranged glass fibers that have been saturated with polyester resin and added to the right fillers.
SMC Polyester Fiberglass Sheet Flat Board
SMC Insulating Sheet is produced using a high temperature, high pressure moulding technique to inject chopped fibreglass strands with unsaturated polyester resin. It is a superb FRP insulator of a certain sort.
Unsaturation Resin Fiberglass Sheet
Fiberglass Sheet is a multivalent electrical insulating rigid sheet made of fiberglass impregnated with high-grade polyester resin and various additives and pressed at high temperatures.
180℃ High-Temperature Resistant SMC Insulation Sheet
High-temperature resistant SMC insulation sheet, also known as sheet molding compound insulation sheet, is widely used in a variety of industries due to its excellent heat resistance, fire resistance, and insulation properties.
SMC is a thermosetting resin, glass fibres, and filler that when combined, form an incredibly strong moulding medium. It is a high strength fibre reinforced sheet moulding composite. High, medium, and low voltage switchgear insulation walls are the principal applications for SMC Black Insulation Sheet. Insulating sheets must have good flame retardancy because these materials are frequently utilised in hot conditions and are prone to fire. One prominent drawback of polymer materials is that they are typically flammable or combustible. We add halogen-free flame retardant elements to our insulating sheets because it is obvious that their qualities prevent them from meeting the requirements of the majority of occasions. It can successfully stop, halt, or postpone the spread of fire when it comes under attack from an external fire source.
Advantages of SMC Black Insualtion Sheet
1. The environmentally friendly green SMC black insualtion sheet is a kind of halogen-free and no harmful substances to the human body.
2. Chemical corrosion resistance SMC black insualtion sheet have good corrosion resistance to acid, dilute alkali, salt, organic solvents, sea water and other industry product characteristics, while metal materials are not acid resistant and easy to corrode.
3. Lightweight and high-strength specific strength and specific modulus are one of the indicators to measure the carrying capacity of materials.
4. Good fire-retardant properties. SMC black insualtion sheet are fire-retardant and flame-retardant.
5. Good heat resistance SMC black insualtion sheet has the ability to maintain its physical properties in harsh high temperature environments. Its working temperature is minus 60 degrees to 150 degrees, and its heat distortion temperature is above 280 degrees.
6. The thermal conductivity is low, the expansion coefficient is small, the thermal stress generated when there is a temperature difference is much smaller than that of metal, and the heat preservation performance is good.
7. High production efficiency, short molding cycle, easy to realize mechanization and automation.
What's The Electrical Aging In Smc Black Insualtion Sheet
Electrical aging is that the insulating sheet and insulating structures in electrical equipment are subject to the action of electric fields during operation. Under the long-term effect of electrical stress as the main aging factor, performance irreversibly changes until failure. This aging not only exists in the insulation of electrical equipment in high-voltage and ultra-high-voltage power systems, but also occurs in electronic devices with high working electric field strength. Insulation of electrical equipment is mostly made of high-molecular insulation materials,which is sensitive to electrical aging.
Electrical aging can be roughly divided into two categories: discharge aging and ineffective electrical aging. Discharge aging is the main form of electrical aging. The reason why the insulating material will age under the discharge is due to heat, combustion, ultraviolet rays, active products (electron 6, oxygen 0, nitrogen N, active nitrogen molecule N, oxygen molecule 02, nitrogen molecule cation N, oxygen molecule Cation 02 and products 03, N02, HN02, etc.). which factor plays a dominant role depends on the discharge conditions, which are the magnitude of the discharge intensity and the environment.
The discharge intensity is related to the type of discharge. In the case of corona discharge, the intensity is low; in the arc discharge, the intensity is high; and in the spark discharge, the intensity is in between. Environmental factors are mainly the presence of oxygen, moisture, pollution, air gaps, etc. Like the intensity of discharge, the degree of aging varies greatly between aerobic and anaerobic; the existence of air gaps in dendritic aging makes dendritic aging develop rapidly, while electrical trace is closely related to environmental pollution factors. Non-discharge aging is caused by the heat generated by the current flowing through the insulating material under the action of the electric field, which results in thermal breakdown of the material; the thermal effect of the current flowing through the surface of the material causes localized carbonation channels on the surface of the material. ; Under the action of DC voltage, the material is aged by electrochemical action or space charge.
The key indicators for the performance of SMC Black Insualtion Sheet
Insulation resistance and resistivity
Resistance is the inverse of conductance, and resistivity is the resistance per unit volume. The smaller the conductivity of the data, the greater its resistance. The two have an inverse relationship. For insulation data, the resistivity is always as high as possible.
Relative permittivity and dielectric loss tangent
Insulation sheet are used for two purposes: the insulation of each component of the electrical network and the capacitor's dielectric (energy storage). The former requires a small relative permittivity, the latter requires a large relative permittivity, and both require a small dielectric loss tangent, especially for insulation Sheet applied at high frequencies and high voltages. In order to reduce the dielectric loss, they are required to be selected Insulation Sheet with small dielectric loss tangent.
Breakdown voltage and electrical strength
In a certain strong electric field, the insulation sheet is damaged, and the loss of insulation function becomes a conductive state, which is called breakdown. The voltage at breakdown is called the breakdown voltage (dielectric strength). Electrical strength is the quotient of the voltage between the voltage at the time of breakdown and the two electrodes receiving the applied voltage under specified conditions, which is also the breakdown voltage accepted per unit thickness. In terms of insulation Sheet, the higher the breakdown voltage and electrical strength, the better.
Tensile Strength
It is the tensile stress that the specimen receives during the tensile test. It is the most widely used and representative experiment for the mechanical function experiments of insulation Sheet.
Burning resistance
Refers to the ability of insulating Sheet to burn when touching a flame or to prevent continued burning when they escape from a flame. With the increasing expansion of the application of insulation Sheet, the requirement for its resistance to incineration is more important. People have improved and improved the resistance to incineration of insulation Sheet through various means. The higher the incineration resistance, the better its safety.
Arc resistance
The ability of an insulation Sheet to withstand arcing effects along its surface under specified experimental conditions. In the experiment, a high-voltage alternating current and a small current are used to determine the arc resistance of the insulation Sheet by the time required for the conductive layer to form on the surface of the insulation Sheet by the arc effect generated between the two electrodes at a high voltage. The larger the time value, the better the arc resistance
SMC Black Insualtion Sheet of Insulation Components for Switchgear
High, medium, and low voltage switchgear insulation walls are the principal applications for SMC Black Insulation Sheet. Insulating sheets must have good flame retardancy because these materials are frequently utilised in hot conditions and are prone to fire. One prominent drawback of polymer materials is that they are typically flammable or combustible. We add halogen-free flame retardant elements to our insulating sheets because it is obvious that their qualities prevent them from meeting the requirements of the majority of occasions. It can successfully stop, halt, or postpone the spread of fire when it comes under attack from an external fire source. Aluminum hydroxide is the flame retardant substance we select since it is chemically inert, non-toxic, and serves as a filler as well as a flame retardant.
A switchgear is an electrical device. The outside line of the switchgear first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc., some also have high-voltage room and low-voltage room switchgear, with high-voltage busbars, such as power plants, etc.
The main function of a switchgear is to open, close, control, and protect electrical equipment in the process of power generation, transmission, distribution, and energy conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices. There are many classifications of switchgear. For example, they can be divided into removable switchgear and fixed switchgear through the installation of circuit breakers; or according to the structure of the cabinet, they can be divided into open switchgear, metal-enclosed switchgear, and metal Closed armored switchgear; according to different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industrial textiles, factories and mining enterprises and residential quarters, and high-rise buildings.
BMC (Bulk Molding Compound), SMC (Sheet Molding Compound) and DMC (Dough Molding Compound) are all thermosetting resin composite materials, and the main difference lies in their form and molding process.
BMC (Bulk Molding Compound): BMC is a premixed uncured thermosetting material that contains resin, glass fiber, filler, catalyst and stabilizer. It usually exists in block or granular form, stored in a sealed container, and taken out when needed. BMC is mainly molded by compression molding, and its excellent fluidity makes it very suitable for making high-precision and complex components.
SMC (Sheet Molding Compound): SMC is a pre-preg non-curing thermosetting material. When used, it is cut into the required shape and placed in a preheated mold. SMC material has a covering layer under the resin, and the covering layer protects the SMC material, which can effectively prevent the material from being affected by air during storage and transportation. SMC is mainly molded by compression molding. The excellent fluidity and expansibility of SMC materials make it particularly suitable for making large and complex parts.
DMC (Dough Molding Compound): DMC is a thermosetting resin composite material that is more viscous than BMC and SMC. Due to the high viscosity of DMC, it has poor fluidity under pressure, so it is often used for manual molding or injection molding. Common uses include complex small parts or high-precision parts.
All three materials have excellent electrical properties, corrosion resistance, dimensional stability and sound absorption, so they are widely used in many fields such as automobiles, construction, electronic equipment and home appliances.
The molding process of these three composite materials usually includes two steps: molding and curing, and the mold temperature controller plays a key role here. The mold temperature controller, usually refers to the mold temperature controller, which can accurately control the temperature of the mold to ensure that the composite material can proceed smoothly during the heating, compression and curing process, and finally form a product with stable structure and qualified performance.
What Are The Inspection Standards For SMC Black Insualtion Sheet
The depth and height of the scratches do not exceed the thickness tolerance of the adhesive sheet. Within each square meter, there should be no more than 5 bubbles with an area of less than 1cm from the insulation sheet wholesale manufacturer, and the distance between any two bubbles should not be less than 40mm. The depth and length of impurities shall not exceed 1/64 of the thickness of the rubber plate. The edges shall be uneven or the width of the sea surface shall not exceed 10mm, and the length shall not exceed 1/105 of the total length of the rubber plate. There shall be no cracks.
Hardness of insulation sheet (Shore A)
55-703. Tensile strength and elongation at break: Tensile strength (Mpa) ≥ 5.02, elongation at break ≥ 250% 4, constant elongation (150%), permanent deformation ≤ 25% 5.
Hot air aging (70 ℃ * 72h): Tensile strength reduction rate ≤ 30% 6. Water absorption ≤ 1.5%.
Electrical insulation performance test of insulation sheet
Voltage withstand test: 25KV (effective value), maintained for 1 minute, there should be no breakdown phenomenon. 2) The breakdown voltage test should be ≥ 35KV (effective value).
What Are Some Tips For Extending The Service Life Of SMC Black Insualtion Sheet
1. SMC insulation sheet should avoid direct sunlight or sharp metal scratches, and should be stored away from heat sources (heating, etc.) to avoid aggravating aging and degradation, thereby reducing insulation performance.
2. When in use, the ground should be flat and free of sharp hard objects. And if the SMC insulation sheet is found to have cracks, scratches, thinning, etc. during use, which are not enough to ensure insulation performance, it should be replaced in time.
3. SMC insulation sheet should be kept dry and clean, and be careful to avoid contact with acids, alkalis and various oils to avoid aging, cracking or stickiness after corrosion, thereby reducing insulation performance.
When we use it, we can use the above techniques to extend the service life of SMC insulation sheet accordingly. In fact, these techniques are also matters that we need to pay attention to when we use it. Therefore, if we want to extend the service life of the product, we must extend it from the daily bits and pieces. Of course, if the product has good functions, we must pay attention to the use methods in different fields when we use it, so that the functions of the product can be well played.
FAQ
Q: What is a SMC sheet used for?
Q: What is an SMC panel?
Q: What does SMC mean in fiberglass?
Q: What is SMC insulation?
Q: Why do we use SMC?
Q: Where is SMC used?
Q: What are the advantages of SMC?
Q: What does SMC mean in electrical?
Q: What is the difference between prepreg and SMC?
Q: What is SMC FRP?
Q: What is the difference between SMC and DMC insulators?
Q: What is the thermal conductivity of SMC?
Q: What is SMC material used in insulation?
Q: What are the raw materials of SMC?
Q: What is SMC insulator?
Q: What is SMC synthetic?
Q: How to calculate thermal conductivity of insulation?
An example: 10 cm of insulating material with a ƛ of 0.05 W/mK results in a R-value of 2 m2K/W. The better the insulating material (lower ƛ), the thinner the layer insulation needs to be to achieve the same result in terms of thermal insulation.
Q: What is the principle of SMC?
Q: What is the SMC manufacturing technique?
Q: What is the process of SMC sheet manufacturing?
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