1. Characteristics of glass fiber chopped strand mat

What is glass fiber chopped strand mat?Glass fiber chopped strand mat is a kind of reinforcing material made by chopping glass fiber raw filaments into small segments of uniform length, randomly laying them evenly, and bonding them with powder or emulsion binders. It is mainly used in molding processes such as hand lay-up, molding, winding, etc., and has good spreadability and wettability. Its core characteristics are as follows:

Even fiber distribution: random laying has good reinforcement, suitable for multi-directional force structures;

Fast impregnation speed: good effect when used with unsaturated resin, vinyl resin and other systems;

Strong operability: easy to lay and trim manually, suitable for complex shape molds.

2. Advantages of glass fiber chopped strand mat

Suitable for various composite processes: hand lay-up, molding, winding can be used;

Strong reinforcement: strong interlayer bonding, high strength and good stability of molded products;

Smooth laying: can be close to the mold to form a complex curved surface, and easy to trim corners;

Wide adaptability: can be used with glass fiber cloth and woven cloth to improve structural performance.

3. Typical application scenarios

FRP hand lay-up products: hull, cooling tower, bathtub, etc.;

Auto parts: ceiling, engine guard plate, seat frame lining;

Construction field: lighting board, decorative board, pipeline reinforcement layer;

Power facilities: cable tray, distribution box shell, insulation shell;

4. Purchase and use guide

Main parameter reference:

Weight: common 100g/m²-900g/m²;

Width: generally 0.2m-3.2m, can also be customized;

Binder type: Powder type: suitable for UP resin, fast dissolution, suitable for dry environment;

                    Emulsion type: suitable for UP/VE/EP system, uniform impregnation, suitable for                         wet or room temperature storage.

Use suggestions:

The material should be stored in a dry, ventilated place away from direct sunlight;

Use with roller compaction tools to improve the quality of the layer and reduce bubbles.

5. FAQ

What is the difference between chopped strand mat and woven roving?

Chopped strand mat is a random layer material with a relatively uniform reinforcement effect in all directions. It is usually used for the surface layer, isolation layer or structural transition layer of products. It is suitable for molds with complex shapes and parts that require anti-seepage and anti-cracking.

Woven roving is a woven structure with obvious directionality. It can provide higher tensile strength and impact toughness in a specific direction. It is more suitable for application in the structural layer to meet the strength requirements of the product.

How to choose between powder and emulsion?

Chopped strand mat is mainly divided into powder and emulsion according to different surface treatments.

The powder type is suitable for unsaturated polyester resin systems, with better storage stability, especially suitable for dry environments to prevent interlayer adhesion;

The emulsion type has better wetting properties and is recommended for systems such as epoxy resins and vinyl resins. It can improve the overall density and bonding effect of products, especially for structural parts and anti-corrosion layers with higher requirements.

What is chopped strand mat used for?

Chopped strand mat is widely used in cooling towers, ship hulls, auto parts, anti-corrosion tanks, sanitary products, wind turbine blades and other industries, and is particularly suitable for hand lay-up, molding, RTM and other processes. In these applications, chopped strand mat can provide uniform reinforcement and good resin impregnation, ensuring the surface of the product is flat, the structure is stable, and cracking and leakage are prevented.

Can chopped strand mat be combined with epoxy resin?

Chopped strand mat can be used in combination with epoxy resin system, but it is necessary to pay attention to the selection of appropriate impregnation agent model. It is recommended to choose the epoxy-specific chopped strand mat model recommended by the manufacturer, or to verify the effect through small batch testing before formal production to ensure that the bond between the resin and the fiber is firm, there are few bubbles, and the product performance is stable.

6. Summary

Glass fiber chopped strand mat is a reinforcing material with flexible operation and strong applicability. It is widely used in FRP molding, molding and composite structures. By reasonably selecting the weight of the felt, the type of binder and the laying method, the structural strength and appearance quality of the product can be significantly improved. It is the core material in hand lay-up and medium and low pressure molding processes.

If you are looking for high-quality glass fiber chopped strand mat, the hot-selling products in China are JUSHI E01, JUSHI P02, CYS-CSM, etc. For more information or to obtain our glass fiber chopped strand mat product information, please contact us via email annayu@169chem.net or phone 18909016373.