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What is composite resin? Its structure and pros and cons

Composite resin is a material synthesized from many other materials, replacing traditional materials such as natural wood, stone, concrete,... Learn more about composite materials as well as their structure, advantages and disadvantages of composite through the following article!


What is composite resin?

To understand what composite plastic is, we need to know the terminology composite. Composite material is a new type of material that is synthesized from two or more different materials. In which, the component material has 2 forms: core and foundation.

General structure of composite plastic materials
General structure of composite plastic materials
  • Reinforcement materials (reinforcing materials) are materials capable of withstanding great pressure, ensuring that the composite material has the required mechanical properties. There are two common types of reinforcement: fiber reinforcement and powder reinforcement. Fiber reinforcement is mostly glass fiber, organic fiber, metal fiber, basalt fiber,... The powdered core is usually stone powder and plastic powder,...
  • The base material is a material with many continuous phases. Phase is a type of component material within the structure of composites. The base material plays the role of helping the core of the composite material to bond together to create a monolithic, homogeneous composite. Some common substrate materials today are thermosetting/thermoplastic polymer (plastic), carbon base, metal base,...

Conclusion: Composite resin is a composite material from the base is plastic, the core can be fiber reinforcement or powder reinforcement.


2 types of composite plastic materials

There are two common types of composite resins: wood pulp reinforced material (WPC) and stone powder reinforced material (SPC). The information below will help readers have a better overview of these materials.

Wood pulp reinforced plastic composite material – WPC

WPC (Wood Plastic Composite) aka plastic wood. Wood composite is a composite material composed mainly of resin with wood grain. Plastics in WPC can be used from PVC, PE,... First, people will mix the resin and wood pulp, then apply modern extrusion technology to produce materials with customized shapes and applications in many different fields.

Structure of wood pulp reinforced composite materials
Structure of wood pulp reinforced composite materials

Because it is mainly composed of plastic and wood pulp, plastic wood has outstanding properties of both plastic and wood. Typically it has high moisture resistance, heat resistance, good bearing capacity and long-term durability. Although the hardness of wood plastic composite is not as high as natural wood, this is a material used as an alternative to natural wood in many large and small projects.

Stone powder reinforced composite resin – SPC

SPC (Stone Plastic Composite) is a composite material with a plastic substrate combined with stone powder reinforcement. We can call it Stone Plastic Composite or SPC.

Structure of composite materials with rock core
Structure of composite materials with rock core

This material is produced by pressing technology under high temperature and pressure. Owning mainly plastic and stone components, SPC material has high water resistance thanks to the characteristics of plastic. At the same time, it has a rustic but luxurious beauty that is similar to natural stone.


Advantages and disadvantages of composite plastic

Currently, composite materials are chosen to replace old materials because of their outstanding properties. Here are the pros and cons of composites you may be interested in.


It is not simple, but composite plastic is increasingly popular and loved by many users. Here are the highlights of this line of composites.

  • High strength, good heat resistance: Experiencing advanced production technology, composite materials have a long-term durability of up to several decades. Besides, it has high heat resistance and bearing capacity, which is resistant to the effects of weather elements.
  • No termites: Because the composition contains plastic, the ability of termites to attack composite materials is almost absolute.
  • Ease of construction and repair: Composite materials have a small weight that makes transportation and construction very easy.
  • Replace natural materials: Materials such as stone, natural wood, etc. can completely be replaced by composite materials. 
Plastic wood bar is able to withstand harsh weather from the outside environment
Plastic wood bar is able to withstand harsh weather from the outside environment


Besides the outstanding advantages, composite materials have a disadvantage that is:

Relatively complex structure: The process of forming products from composite materials is relatively complicated, which requires the use of modern machinery and high skill level of workers.


2 applications of composite materials in design

Because of its many superior properties, composite materials are highly appreciated in the field of design. Specifically, it is widely used in interior and exterior decoration.

Composite materials are used in interior decoration

Stone powder-reinforced composite resin is often used fluted panel, PVC panels for walls and ceilings in the home. In addition, it is also used to make all kinds of plastic floors. With a variety of forms, composite materials create newness for every living space.

Stone powder composite materials are used in plastic floors and stair linings
Stone powder composite materials are used in plastic floors and stair linings

Many families also choose furniture made of composite materials to save costs. Although the price is cheap, it still meets all the needs of use because of many outstanding features such as less fading, easy to clean, anti-mold,...

Composite materials used in exterior decoration

Exterior products require the ability to withstand harsh weather conditions. Composite materials that can withstand mold, heat, etc. will be the best choice. Currently, wood pulp reinforced composite plastics are commonly used such as:

Wood pulp composite materials are used to make fluted plastic wood panel for outdoor wall
Wood pulp composite materials are used to make fluted plastic wood panel for outdoor wall

Supplier of quality composite plastic materials

Kosmos is one of the leading units in the field of supplying and distributing interior and exterior decoration materials. In particular, materials from composite plastic are a strength of Kosmos. Kosmos products are present in many large and small projects, spanning all parts of the country.

Currently, Kosmos' agents are present in all provinces and cities, supporting and responding to user needs quickly. If you are looking for a supplier of products from composite materials, come to Kosmos immediately.

In short, composite plastic is a line of synthetic materials, which was born to replace old materials with many preeminent features. This line of materials has a variety of types and is applied in many areas of life. Hopefully, the above information will help readers better understand composite materials, one of the most popular materials today.

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