1. Characteristics of pultrusion roving

What is pultrusion roving? E-glass pultrusion roving is a high-performance fiberglass reinforcement material designed for pultrusion processes. Made from E-glass and treated with special sizing agents, it provides excellent resin compatibility, tensile strength, and processing stability, widely used in the production of FRP profiles and structural components.Its core characteristics are as follows:

Special impregnation agent formula: compatible with various resin systems such as UP, VE, EP, PU, etc.;

Uniform linear density, less hairiness: stable molding tension, not easy to break fiber;

Adapt to high-speed pultrusion process: fast resin impregnation, high molding efficiency;

Good inter-bundle dispersion: avoid yarn agglomeration or unevenness during molding process.

2. Advantages of pultrusion roving

High tensile strength and excellent product performance

Corrosion-resistant and aging-resistant, suitable for outdoor and corrosive environments

The yarns are neatly arranged to ensure the appearance and size stability of the product

3. Typical application scenarios

Industrial products such as cable trays, insulating channel steel, guardrails, fences, etc.

Building structural profiles, such as window frames, door frames, balcony handrails, etc.

Automotive parts, such as bumpers and chassis brackets

Rail transit composite structural profiles

Energy field, such as photovoltaic brackets and wind power platform structural parts

4. Selection and use guide

Common specifications:

Linear density: 1200tex, 2400tex, 4800tex, 9600tex,

Filament diameter: 13-24µm

Applicable resin system: unsaturated polyester (UP), vinyl resin (VE), epoxy (EP), polyurethane (PU), etc.

Impregnating agent type: mostly UP/VE special type, and epoxy system is also available

Usage suggestions:

Reasonable control of the heating temperature of the pultrusion die can optimize the curing speed and surface smoothness of the product;

Pay attention to uniform tension to avoid yarn breaking or loosening;

5.FAQ

What is the difference between pultruded roving and direct roving?

Direct yarn is widely used and is suitable for many fields such as spraying, winding, and weaving; while pultruded yarn is specially designed for pultrusion process, focusing on optimizing the sizing agent formula, improving the resin impregnation and yarn tensile resistance during high-speed continuous molding. At the same time, the linear density control of pultruded yarn is more precise, ensuring the uniform cross-sectional strength of the product and meeting the requirements of high-strength structural parts.

Can it be used with epoxy resin?

E glass fiber pultruded yarn is treated with special sizing agents and can be well adapted to the epoxy resin system. It can be used not only for unsaturated polyester and vinyl systems, but also for thermosetting resins such as epoxy and phenolic. In actual production, epoxy system pultruded products are commonly used in electrical insulation components, high-end industrial profiles and other fields, and have high requirements for strength and heat resistance.

The difference between pultruded profiles and metal profiles

Glass fiber pultruded profiles are widely used in the corrosive environment of chemical plants, insulation brackets of power facilities and other fields due to their light weight, high strength, corrosion resistance, insulation, and UV protection. Although traditional metal profiles (such as steel and aluminum) have higher strength and mature technology, they are heavy and have high maintenance costs in corrosive environments. They are suitable for scenarios that are sensitive to strength and cost but have low environmental requirements, such as mechanical frames and ordinary building structures.

6. Summary

Pultrusion roving is a high-performance reinforcement material specially developed for pultrusion molding. It has excellent mechanical strength, good resin compatibility and stable process adaptability, making it the preferred choice for FRP profile manufacturers in industrial, construction, and energy sectors.We are a fiberglass manufacturer in China. If you are looking for high-quality yarns specially prepared for pultrusion, our products will be a good choice.

For more information, please contact me via email annayu@169chem.net or phone 18909016373.Whats app:+86 18909016373.