Zhejiang Aobang Technology Co., Ltd.
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BMC/SMC Molded Products



  • No.62 zhidailang, Sha Village, Luoshe Town, Deqing, Huzhou city, Zhejiang, China
  • info@waiwaitree.com
  • +86-15657163173

Ⅰ. Introduction of molding compound

Molding compound is a type of plastic. Compared with common thermoplastics, molding compound has higher geometric dimensional stability, more resistance to extreme heat and humidity and complex environments, chemical resistance, and high mechanical strength.

Ⅱ. The function of molding compound

1. Physical function

The molding shortening rate of molding compound depends on many factors, such as resin composition, filler species, moisture content and molding conditions. The coefficient of linear expansion of phenolic resin molding compound is closely related to the variety of fillers. With the increase of inorganic fillers such as glass fibers in the plastic, the coefficient of linear expansion decreases, while the coefficient of linear expansion of plastics containing synthetic fibers is larger.

2. Mechanical function

The creep resistance of the molding compound at room temperature varies with the filler and has a different dependence on temperature. The molding compound containing inorganic fillers such as mica and asbestos has better creep resistance than the molding compound containing organic fillers. Generally speaking, the tensile strength and flexural strength of the glass fiber as filler molding compound is better, and it is less affected by temperature, and some fillers such as wood flour are easy to absorb moisture. This will cause a decrease in bending strength and bending modulus.

3. Electrical function

Molding compound has outstanding electrical functions. It has higher insulation functions at room temperature, such as higher volume resistance, surface resistance and breakdown voltage. It can be used as an insulating material, but its dielectric constant and dielectric loss tangent are large and can only be used as a power frequency insulating material.

4. Corrosion resistance

Filler-free molding compounds are hardly corroded by inorganic acids, are insoluble in most hydrocarbons and chlorides, and are insoluble in ketones and alcohols. But it is not resistant to corrosion by concentrated sulfuric acid, nitric acid, and high temperature chromic acid.


  • Automotive

    Sheet molding compound (SMC) mold can be used to manufacturing parts of cars, buses, trucks, transport and special vehicles.

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  • Energy/Power Generation
    Energy/Power Generation

    BMC and SMC are used to make xenon lamp HID luminaires because they can withstand the high temperatures that luminaires can withstand.

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  • New Energy Vehicle
    New Energy Vehicle

    Sheet molding compound (SMC) mold can be used to manufacturing parts of new energy vehicle.

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  • Transportation Equipment
    Transportation Equipment

    BMC and SMC are used to make outdoor large-scale transportation equipment bearing housing, bearing cover, sealing ring, non-oxidizing.

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  • High-speed Rail
    High-speed Rail

    The bulk molding compound (BMC) and sheet molding compound (SMC) are different from these materials.

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  • Building Materials
    Building Materials

    Our BMC ceiling and wallboard materials have been developed for more than ten years, and the technology is constantly being updated.

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  • Ship

    Sheet molding compound and bulk molding compound are widely used for Ship. Click here for more info about the SMC & BMC material.

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  • Electrical Appliances
    Electrical Appliances

    BMC can be used for household appliance, such as frying pan lids and brackets, as well as kitchen component materials such as oven endplates.

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  • Motor

    BMC plastic motor mold replaces the traditional iron shell and aluminum products, reduces the process, stronger sealing, higher safety factor, less noise.

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  • High And Low Voltage Electrical Switch
    High And Low Voltage Electrical Switch

    BMC & SMC is used to make parts with resistance to electrical marks greater than 600 minutes and arc resistance greater than 180 seconds.

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  • Outdoor Supplies
    Outdoor Supplies

    The fuel cell industry uses a large number of thermoset materials to make two plates. BMC and SMC are also suitable for use in solar tile and wind turbines.

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