Processes And Product Classification Of Fiberglass Mat

I. Classification by Production Process: The Most Mainstream Classification Method in the Industry

 

The production process directly determines the internal structure and physical properties of fiberglass mat, and is also the most commonly used classification standard in the industry. It is mainly divided into the following two categories:

 

1. Wet-Process Fiberglass Chopped Straight Filament Mats
The wet process is currently the most widely used production method. It uses chopped fiberglass as raw material, which is dispersed hydraulically, formed by papermaking, and then dried and cured. This type of mat has uniform fiber distribution, a smooth surface, and controllable porosity, while also possessing good flexibility and tensile strength. The thickness is typically between 0.1-2mm, with a wide range of basis weights. It has excellent compatibility, adapting to subsequent processes such as resin impregnation and coating, making it the preferred substrate for electrical insulation, roofing waterproofing, and composite material reinforcement.

 

2. Dry-Process Fiberglass Chopped Straight Filament Mats
The dry process does not require water-soluble dispersion. Chopped fiberglass is directly conveyed by airflow, evenly spread, and then cured using an adhesive. Compared to wet-laid fiberglass felt, it has higher bulkiness, better breathability, a more environmentally friendly production process, and more flexible thickness adjustment. However, its overall uniformity is slightly inferior to wet-laid felt, and it is mostly used in scenarios with high requirements for breathability and thermal insulation, such as pipe insulation, automotive sound insulation, and filter materials.

 

II. Classification by Product Use: Precisely Matching Downstream Application Scenarios

 

Based on the actual usage needs of the industry, fiberglass felt can be specifically divided into four major specialized categories, with extremely strong applicability:

 

1. Electrical Insulation Grade Fiberglass Felt
This is a specialized category for the electrical industry, with stringent requirements for insulation, temperature resistance, and voltage resistance. It is produced using high-purity alkali-free fiberglass, with a smooth, impurity-free surface, and possesses excellent electrical insulation and heat resistance. It is mainly used for insulating wrapping and insulating gaskets for motors, transformers, cables, and electronic components, and is a key material for the safe operation of electrical equipment.

 

2. Building-Grade Waterproof Fiberglass Membrane

As the core reinforcing substrate of waterproof membranes, this type of membrane boasts outstanding water resistance, aging resistance, and dimensional stability. It effectively improves the tensile strength and tear resistance of waterproof membranes, preventing cracking and deformation. It is widely used in roof waterproofing, basement waterproofing, and road and bridge waterproofing projects, and is compatible with the production of asphalt-based and polymer-based waterproof membranes.

 

3. Composite Material Reinforced Fiberglass Membrane

Primarily focused on reinforcement and toughening, it exhibits excellent compatibility with epoxy resins and unsaturated resins. It has a fast impregnation speed and, after molding, significantly improves the mechanical properties of composite materials. It is commonly used as a reinforcing substrate in fiberglass products, automotive parts, bathroom fixtures, and wind turbine blade components, achieving a balance between lightweight and high strength.

 

4. Thermal Insulation Grade Fiberglass Mat This product focuses on thermal insulation, sound absorption, and heat insulation properties. It features high fiber bulk, low thermal conductivity, high temperature resistance, and is non-flammable. It can be processed into thermal insulation mats and sound-absorbing panels, and applied in building wall insulation, industrial pipeline insulation, and automotive interior sound absorption and noise reduction. It is environmentally friendly, odorless, and has a long service life.

 

III. Classification by Performance Characteristics: Meeting Special Working Conditions

 

For special application environments, fiberglass mats can also be classified into the following two categories based on modified properties, suitable for high-end applications:

 

1. Temperature-Resistant Modified Fiberglass Mat Through optimized special binder formulations, the product's temperature resistance is improved. It can be used for extended periods in high-temperature environments of 150-300℃ without deformation or decomposition. It is mainly used in aerospace, industrial high-temperature equipment, new energy battery insulation, environmental protection equipment, and other high-temperature applications.

 

2. Alkali-Resistant Fiberglass Mesh: Made from alkali-resistant fiberglass raw materials, this product boasts exceptional resistance to alkaline corrosion. It is primarily used in alkaline environments such as cement product reinforcement, external wall insulation mesh, and anti-corrosion projects, effectively preventing substrate corrosion and extending product lifespan.

 

While the classification of fiberglass mesh may seem complex, it essentially revolves around three core principles: process, application, and performance. Different types have their own advantages and disadvantages, and are suitable for distinct scenarios. Understanding the core characteristics of various types of mesh is crucial for effective material selection, cost reduction, and efficiency improvement, whether in procurement, production development, or technical learning.