300gsm (0.98oz/ft2) Powder Bound Chopped Strand Mat 950mm (37")

Chopped strand mat (or CSM as it is often known) is the most widely used of all composite reinforcement materials.

Short strands of glass are randomly scattered and bound to create a mat which can then be wetted out with resin and used as a general purpose reinforcement for traditional fiberglass (GRP/FRP) molds or parts.

Due to its comparatively low performance compared with alternative reinforcements (woven glass fabric, carbon fiber, Kevlar etc.) chopped strand mat is certainly not at the forefront of advanced composites but there are still applications where it is used in parts and it is still used extensively in the production of patterns and molds for more advanced composites.

Typical Uses

Our 300gsm (0.98oz/ft²) powder bound CSM is suitable for use with all resin systems including epoxy, polyester, vinyl ester and phenolic resin so if you want to use just one type of chopped strand mat this is the one to go for.

• Epoxy, polyester and vinyl ester compatible
• Suitable for mold making and laminating
• Suitable for use with our high-temperature mold making system

How to Buy

This roll is 950mm (37.5") wide and the mat is sold by the linear meter (1 meter = 1.09 yards). The unit price shown is for 1 linear meter, volume discounts automatically apply for larger quantities of mat.

Please purchase the number of linear meters you require. When purchasing multiple meters, for shorter lengths, the fabric will be supplied folded to keep package size and hence shipping costs down. If you need your fabric on a roll for a specific application then please contact us and we will be more than happy to supply it that way. For larger lengths, the fabric may be supplied in two or more pieces.

A minimum order quantity of 3m (3.3yd) applies to this product.

Further Information

Why 'Powder Bound'?

Necessarily the individual strands of glass that make up the mat need something to bind them together. In conventional emulsion bound CSM the binder is broken down by the polyester or vinylester resin it is designed to be laminated with. However, the binder used in conventional CSM is not broken down by epoxy resin meaning the individual strands all stay together in their original mat making the CSM impossible to laminate with properly.

'Powder Bound' fiberglass matting (CSM) is designed for use as chopped strand mat for epoxy resin, using a powder based binder that does not need to be broken down in the same way as emulsion bound mat, making it essential for use when laminating with epoxy resin, either making a mold or a part.