SMC formulation

Nowadays, many SMC suppliers are trying to make low density material. This new SMC formulation will be allowed engineers to get ability to design with a low specific gravity material without mechanical properties, surface qualities, etc.

Nowadays, many SMC suppliers are trying to make low-density material. This SMC formulation will be allowed you to get the ability to design with a low specific gravity material without mechanical properties, surface qualities, etc.

Traditional SMC materials used in Class A applications have a density of 1.8 g/cm2 to 1.9 g/cm2 — around 30% less than aluminum and 75% less than steel, but relatively high for plastic material. Because SMC parts must be thicker than steel or aluminum, actual weight savings are smaller than these figures would indicate. The classic method for reducing density in SMC is to add hollow glass microspheres, and formulations are in production for unexposed, lightly loaded components with densities as low as 1.3 g/cm2.

What are the common types of SMC formulations?

  1. Basic formulations.
  2. Formulation according to production process and product performance.
  3. Formulation specially for a particular product.

Depending on the range of products, requirements and the specific conditions of each unit, the components and dosage ratios in the table can be changed in different ways.

SMC Formulation

RecipeGeneral/ServingCorrosion Resistant/PartLow shrinkage portion
Polyester resinPhthalate 100Isophthalic Acid 100Phthalate 100
InitiatorTt-Butyl Benzoyl Peroxide 1//
Low shrinkage additivesThermoplastic Polymers 0 – 10
Thermoplastic Polymer 25 – 40/
fillerCalcium Carbonate 70 – 120Barium Sulfate 60 – 80Calcium Carbonate 120 – 180
Internal release agentZinc stearate 1~2Zinc stearate 1~2Zinc stearate 3~4
ThickenersMgO or Mg(OH)2, Ca(OH)2, 1-2MgO or Mg(OH)2,Ca(OH)2,0.5-1MgO or Mg(OH)2, Ca(OH)2, 1-2
StabilizerAppropriate amountAppropriate amountAppropriate amount
Fiberglass25% ~ 35%//

How to choose unsaturated polyester resin for smc?

The selection of unsaturated polyester should meet the following requirements:

  1. Low viscosity or solid powder, convenient for glass fiber impregnation or mixing.
  2. Easy to react with thickener to meet thickening requirements.
  3. It can cure quickly and improve production efficiency.
  4. It has high thermal rigidity to ensure that the part will not be damaged when it is demolded.
  5. It has sufficient toughness and does not crack when the workpiece is deformed.

MDC Mould, as a leading SMC mold maker in china, has developed such compression mold using low density SMC material, and finally testing was successful. Due to this, MDC Mould has been officially qualified by OEMS such as Daimler and Audi.

Carbon Fiber Composites and SMC Molds: An Innovative Combination

Manufacturing carbon fiber composites using SMC molds is one of the common methods in modern industrial manufacturing. The advantage of this method is that it can produce a large number of high-precision, high-quality carbon fiber composite products.

Carbon fiber composite materials are composed of composite materials such as carbon fibers and resins, and have the advantages of light weight, high strength, good rigidity, and corrosion resistance. Due to these characteristics, carbon fiber composite materials have been widely used in aviation, automobiles, sporting goods, construction and other fields.

carbon fiber

In the automotive industry, carbon fiber composite products can replace traditional steel and aluminum products, which can reduce vehicle weight and improve fuel efficiency and vehicle performance. In the field of aviation, carbon fiber composite products can also reduce the weight of aircraft, improve fuel efficiency and flight performance. At the same time, carbon fiber composite materials are also widely used in sporting goods, such as golf clubs, bicycles, skateboards, etc., because of their light weight and good strength, they can improve the performance of athletes.

The SMC mold adopts the “SMC compression molding processing” production process. SMC, or Sheet Molding Compound, is a prefabricated composite material, usually composed of carbon fibers, resins, fillers, and additives.

The use of SMC molds in the production of carbon fiber composite materials offers several advantages over other manufacturing methods. These advantages include:

1. High precision and accuracy: SMC molds allow for the production of high-precision, high-quality carbon fiber composite products with consistent dimensions and shapes. This ensures that the final products are of the highest quality and are highly accurate.

2. High production efficiency: SMC molds can be used to mass-produce carbon fiber composite products with high efficiency. This can significantly reduce production costs and increase productivity.

3. High-quality finish: Carbon fiber composite products manufactured using SMC molds have a smooth, high-quality finish. This reduces the risk of deformation and cracking and ensures the durability and stability of the final product.

4. Design flexibility: SMC molds can be customized to meet specific design requirements, enabling the production of carbon fiber composite products of different shapes and sizes.

smc characteristics

In conclusion, the use of SMC molds in the production of carbon fiber composite materials is a highly efficient, accurate, and cost-effective method. As carbon fiber composite materials become increasingly popular in a wide range of industries, the importance of SMC molds will only continue to grow. Future advancements in SMC mold manufacturing technology will undoubtedly lead to even more efficient, accurate, and high-quality production of carbon fiber composite materials.

MDC Mould focuses on composite material molds and compression molds, and is a very professional and well-known SMC mold manufacturer at home and abroad. The company has mature and complete development capabilities. As a local manufacturer of hot-pressing molds in China, the molds manufactured by the company can fully meet the quality requirements of the world’s top 500 companies, and its technology has reached the international level.

the Importance to Find A Good Mold Manufacturer

MDC Mould is a professional mold manufacturer, which is famous for its excellent technology and high-quality products,.

The design and manufacturing quality of the mold directly affects the quality and performance of the final product. For example, in aircraft manufacturing, it is necessary to manufacture a large number of products with complex shapes, so SMC molds with high precision, high stability and high efficiency are required. Only in this way can the needs of aircraft manufacturing be met, and the quality and safety of products can be guaranteed.

smc-bath
SMC mould

MDC Mould is a professional mold manufacturer, famous for its excellent technology and high-quality products. The company has a skilled and experienced R&D team, as well as a group of high-quality production workers, committed to providing customers with the best quality mold solutions. Whether you need mold design, manufacturing, or processing to after-sales service, MDC Mould always takes customer satisfaction as the highest goal, adhering to the corporate philosophy of “quality first, integrity first“, constantly pursuing excellence and innovation, and winning the trust of customers and praise. It is acknowledged that MDC Mould is a trustworthy enterprise. Its technical strength and quality assurance make it stand out in the industry and become the preferred partner of many customers.

MDC Mould

Taizhou Huangyan MDC Mould&Plastic Co.,ltd
No.35-1 Qingfeng Rd, Huangyan North Industrial estate, Taizhou, Zhejiang, china 318020
E-mail:[email protected];
Website: compression mould

Why SMC Mold/Mould are Getting Popular in Aircraft Manufacturing?

the advantages of using SMC molds to manufacture aircraft components

In recent years, the use of composite materials in commercial aviation aircraft has increased significantly and has become a pillar material in the aviation field. According to the forecast of the International Air Transport Association (IATA), the demand for composite materials in the global air transport industry will increase to $600 billion in the next 20 years, accounting for more than 70% of the total demand.

Among them, SMC molds can manufacture complex and detailed parts with extremely high precision. In aircraft manufacturing, SMC molds are usually used to manufacture aircraft shells, bulkheads, interiors and other components.

Boeing787
SMC Molds’ Application in Aircraft Manufacturing

One of the advantages of using SMC molds to manufacture aircraft components is that it can produce lightweight, strong, and corrosion-resistant parts. These characteristics are very important for aircraft because they can reduce the weight of the aircraft and improve its performance, thereby reducing fuel consumption and reducing carbon emissions. It can also extend the time of staying in the air, thus enabling the aircraft to fly higher and faster or have better maneuverability. At the same time, the aircraft can also install more equipment to improve the overall performance of the aircraft. Reducing the quality of the structure can greatly reduce the use cost of the aircraft and achieve obvious economic benefits.

On the other hand, SMC products also have high processing performance and can be made into various complex shapes and sizes, which can help designers realize their creativity and imagination.

MDC Mould is a professional and renowned mold manufacturer, especially specializing in SMC mold, BMC mold and other compression mold. If you have any need, please contact us at [email protected];

SMC Molds’ Application in Aircraft Manufacturing

As a mold which is usually used in the manufacture of complex parts or products. SMC molds also play an important role in the aircraft manufacturing industry.

SMC mold is a mold used to manufacture complex shapes, usually used in the manufacture of complex parts or products. An airplane, on the other hand, is a complex mechanical device that requires many parts to build. Therefore, SMC molds also play an important role in the aircraft manufacturing industry.

It is calculated that nearly 10 tons of SMC materials used by BOEING 777 aircraft. The wings and empennage of the “Seasar” CD2 of Dornier Starfish Malaysia are made of SMC mold.

Boeing777 aircraft uses nearly 10 tons of smc materials
Boeing 777
Seastar by Dornier Seawings
Seastar

Here are some examples of using SMC products to manufacture aircraft parts:

1. Aircraft shell: large and complex shell parts, such as aircraft fuselage, wings, empennage, etc.

2. Bulkheads and interior trim: such as seats, cargo walls, toilet partitions, etc.

3. Engine cover: SMC molds have excellent heat resistance and flame retardancy, and are suitable for high temperature and high pressure environments.

4. Landing gear cover plate: SMC mold has the characteristics of high strength and light weight, which can improve the fuel efficiency and performance of the aircraft.

5. Auxiliary materials for aircraft parts: such as the skeleton of aircraft flaps, flap extension mechanisms, mounting brackets, etc. Although these parts are not directly exposed to the outside, they are also important components of the aircraft.

MDC Mould — A Environmentally Conscious Mold Manufacturers in China

During the production of SMC molds, it is unavoidable to generate pollutants such as waste water and waste gas. The threat to the environment and human health caused by the discharge of these waste materials cannot be ignored. As a professional mold manufacturers, MDC Mould…

During the production of SMC molds, it is unavoidable to generate pollutants such as waste water and waste gas. The threat to the environment and human health caused by the discharge of these waste materials cannot be ignored. Therefore, it is necessary to carry out environmental protection technologies such as waste water treatmentwaste gas treatment and resource recovery.

waste water treatment

Waste water treatment refers to a technology that removes or transforms harmful substances in waste water to meet discharge standards. During the production of SMC molds, the waste water mainly contains harmful substances such as resins, solid particles, chemicals, and oils. We have three ways. Physical treatment mainly uses filtration, precipitation, membrane separation and other methods to remove solid particles and grease in wastewater; chemical treatment mainly uses oxidation, reduction, precipitation and other methods to chemically transform harmful substances in wastewater; biological treatment mainly uses microorganisms to degrade and transform harmful substances in waste water. After it, the harmful substances in the wastewater are removed or transformed to meet the discharge standards required by environmental protection, which can reduce environmental pollution.

Waste water treatment

waste gas treatment

Exhaust gas treatment refers to a technology that removes or transforms harmful substances in exhaust gas to meet emission standards. During the production of SMC molds, the exhaust gas mainly contains harmful substances such as volatile organic compounds and nitrogen oxides. The methods of exhaust gas treatment also mainly include physical, chemical and biological treatment.

resource recovery

In addition to processing, we can also recycle useful substances in waste materials. In the production process of SMC molds, resins and solid particles in waste water can be recovered by precipitation, filtration and other methods; volatile organic compounds in waste gas can be recycled by pyrolysis and other methods, and resources such as heavy metals in waste water and waste gas can also be recovered. It can be recycled by physical and chemical treatment and other methods.

For SMC mold manufacturers, it is necessary to establish waste water treatment systems, waste gas treatment systems and resource recovery systems to promote the sustainable development of the mold industry.

In the process of continuous research and development of higher-quality, higher-tech molded SMC molds, MDC Mould also pays attention to environmental protection and contributes to sustainable development.

MDC mould

“Metallography” of Composite Materials

Metallography is an important branch of metal materials science, which can provide strong support for material design and performance optimization.Composite materials have an analysis method similar to metallography called tissue analysis.

Although composites and alloys are both composed of two or more materials, they differ in that composites are usually composed of different types of materials that combine to form a new material properties; alloys are composed of the same or different metal elements, and their composition can be adjusted to change their properties. But for the latter, usually there will be no obvious changes in material properties like composite materials.

Metallography is an important branch of metal materials science, also known as metal microhistology. Observing the microstructure of metal materials through a microscope reveals the properties and behavior of metal materials. Metallography has important application value in the preparation, processing and use of metal materials. Metallographic analysis can provide strong support for material design and performance optimization.

mental Cr
mental Co

Composite materials have an analysis method similar to metallography called tissue analysis or composite microhistology. Similar to metallographic analysis, tissue analysis is to observe the microstructure of composite material samples through a microscope.

The key to high-end manufacturing lies in materials. That is to say, through tissue analysis, to study the internal structure of composite materials, so as to optimize the performance, in order to manufacture better molds.

For example, fillers can be used to increase some of the final physical or mechanical properties of the SMC mould. The most commonly used filler is calcium carbonate. Extracted from ground limestone, they reduce manufacturing costs, but in turn, they increase the specific gravity of the produced parts. Alumina can make SMC molds have good dielectric properties, while hollow glass microspheres can significantly reduce the specific gravity of SMC components.

insp

MDC Mould has been concentrating on research of moulds for so many years. We have “State-of–the-art” equipment, leading edge technological process and our first-class employees guarantees delivery to our customers across the world with high quality mold and products.

SMC Mold and New Energy Vehicles

New energy vehicles are the future development trend of the automobile industry. SMC molds provide important support and solutions for the manufacture and development of new energy vehicles.

In 2022, the world is still under the influence of the epidemic, and many industries are swaying in the wind and rain. Even if the economic conditions are down, there is one industry in the world that is growing rapidly, which is new energy vehicles. As consumers’ demands for environmental protection, energy saving, and intelligence continue to increase, new energy vehicles are the future development trend of the automotive industry. But while environmental benefits are a motivating factor for EV adoption, vehicle performance and technology are the main draw. The improved driving experience brought about by technological progress, design and styles are all key factors in the popularity of electric vehicles. Especially for ordinary people, the most important advantage of new energy vehicles is not environmental protection, but low travel costs, and electricity bills are much cheaper than fuel bills.

Charging pile of new energy vehicles

Compared with traditional metal materials, composite materials manufactured by SMC molds(sheet molding compound) have the following advantages:

1. Lightweight: Composite materials made by SMC molds are lighter than metal materials, which helps to reduce the weight of the vehicle and improve the mileage and energy-saving effect of new energy vehicles.

2. High strength: The composite material made by SMC mold has high strength and rigidity, which can improve the impact resistance and tensile resistance of the body, and improve the safety of the vehicle.

3. Corrosion resistance: The composite material made by SMC mold is not easy to be corroded, which can ensure the long-term stability of the body and components.

4. Good shapeability: SMC molds can produce complex body and component shapes, have better shape performance, and can meet the design requirements of new energy vehicles.

5. SMC molds can also realize automated production through digital manufacturing technology, improve production efficiency and quality, and realize intelligent manufacturing, which will help promote the modernization and intelligence of new energy vehicle manufacturing.

Therefore, SMC mold provides important support and solutions for the manufacture and development of new energy vehicles.

According to the statistics, China is already the world’s largest market for electric vehicles, and it also leads in terms of infrastructure. There is no doubt that China is ahead of the trend.

Sales volume of new energy vehicles in the world from 2015 to 2023

MDC Mould is a professional manufacturer of SMC mold and BMC mold. The molds developed by our company have high difficulty, long service life, short cycle time, reasonable price, prompt delivery and considerate service, and are favored by customers at home and abroad.

Will Composite Material Decouple?

As an important material, will composite material decouple?

Composite material is an important material, which has been widely used in aviation, aerospace, automobile, construction, electronics and other fields. Parts made of composite materials have high strength, light weight, and high rigidity. The Jeep car of Chrysler Group Co., Ltd. and the “Seastar” CD2 aircraft of Dornier Starfish Malaysia all use advanced composite materials such as SMC molds and carbon fiber composite materials.

But the manufacture of composite materials usually requires raw materials, technologies and equipment from many different countries or regions, so international cooperation and trade are inevitable.

decouple

However, under the current international situation, factors such as politics, economy, and security among countries may lead to decoupling among countries. For example, some countries may adopt protectionist policies, restrict the export of raw materials and technologies, or impose trade restrictions on products from certain countries. These constraints can have implications for composite manufacturing and supply chains, affecting product quality and cost.

In addition, some countries may restrict or prohibit the import of specific products or technologies from certain countries, which may affect the manufacture and application of composite materials. For example, when security or privacy concerns arise in certain countries, electronic products or technologies from that country may be restricted or prohibited from entering other countries’ markets.

Therefore, composites may be affected by decoupling and trade restrictions between countries. This requires companies and manufacturers to take corresponding measures to deal with it, such as dispersing production bases among multiple countries, exploring alternative raw materials and technologies, and strengthening quality management and testing.

China compression mould
compression mould

MDC Mould is a professional supplier of advanced composite materials such as SMC molds and carbon fiber composite materials. It introduces high-quality raw materials, has superb technology, and is honest and trustworthy. If you need, welcome to contact us.

Applications of SMC mold in Rail Transit

As a lightweight material, SMC mold can be used in the production of train auxiliary parts, non-main bearing parts, carriages, car bodies, bogies, power rail bearings, etc. in rail transit.

The rapid development of high-speed railway industry in China’s rail transit has attracted worldwide attention. However, in recent years, energy shortage and environmental pollution have become the focus of global attention. Energy conservation and emission reduction are becoming the common choice of economic development of all countries in the world. Lightweight is an important means to achieve energy conservation and emission reduction, and it is also an inevitable trend in the development of transportation. The development of lightweight materials is the key to lightweight rail transit. Lightweight materials are divided into aluminum alloy, composite material and plastic. Composite materials have become the main materials.

high-speed railway

Among all fiber reinforced resin materials, SMC materials are the closest to metal materials in performance. Although molding processing cycle of SMC molds is longer than that of metal metarials, SMC molding equipment has less investment and can be continuously produced with higher automation. At the same time, compared with other fiber reinforced resin materials, SMC mold has the advantages of short molding cycle, uneasy deformation of products, high mechanical properties and thermal stability, and strong corrosion resistance.

In rail transit, SMC mold can be used in the production of train auxiliary parts, non-main bearing parts, carriages, car bodies, bogies, power rail bearings, etc.

MDC Mould is mainly engaged in the development and production of hot-pressing molds such as SMC moldBMC mold, GMT mold, FRP mold, etc. The molds developed by our company have high level of technique, long service life, short cycle, reasonable price, timely delivery and considerate service, which are favored by customers at home and abroad. If you need, please contact us!