Aramid Paper
As a kind of heat resistant insulating paper,Aramid Fiber is mainly composed of the polyisophthaloyl metaphenylene diamine fiber. The variety of laminates processed from the insulating paper shall have the extremely high electric, chemical and mechanical integrity. The proper use of such products will extend the service life of the electric equipment and reduce the premature failure and the frequency of the maintenance. There is a great number of different types of the products mainly including the insulating paper and laminated board, which have the appropriate balance of performance and generally serve the transformers, electric motors, generators and other electric equipment.
Aramid Paper has the following unique characteristics, making them excellent electrical insulation materials:
Dielectric Strength
Calendered paper has good dielectric strength higher than 10KV/mm, and it can improve the dielectric strength of the product if immersed in the insulating varnish or resin.
Thermal Stability
The dielectric property and mechanical property of paper will keeps unchanged under the environment temperature lower than 200℃. Even at the temperature of 220℃, Paper will also keep the properties unchanged for a long term.
Non-toxicity And Flame Retardant (E320646)
In 2008, Paper passed American UL 94 (E320646) flame retardant certification. Established on the inner molecular structure, the paper is inherently non-toxic to human and animals and in full conformity with the environment protection requirements.
Mechanical Strength
A calendered paper is smooth with good wear resistance, high tensile strength and tear strength, and easy for processing or shaping.
Chemical Compatibility
Paper products remain stable in most of common solvents and the extreme resistance to the corrosion by acid, alkali and ketone. They are compatible with all types of insulating varnish, adhesive, transformer oil and other electrical equipment parts.
Other Characteristics
Moisture resistant, low-temperature resistant and radiation resistant etc.
Aramid Fiber
Aramid fiber features advantages, such as high temperature resistance, fire resistance, insulation, abrasion resistance and good dimensional stability, which is widely used in such fields as environmental protection, filtration, high-performance protection products and electrical insulation, cellular materials applied to the airplanes & high-speed trains.
Aramid Fiber is of the full-meta structure with the formal chemical name of polyisophthaloyl metaphenylene diamine, which shall fall within the scope of the aromatic polyamide. Heat-resistant Aramid Fiber’s chemical structure is extremely stable. Its high resistance toward the weak acid, weak alkali and the majority of organics such as the chemicals including ketone and alcohol make it widely use in in broad application.
Meta-Aramid Fiber TG Graph
Main technical parameters
| Item | Unit | Value |
| Density | g/mc3 | 1.37-1.38 |
| Strength | cN/dtex | 3.5 |
| Elongation | % | 25-60 |
| Initial modulus | g/D | 30-70 |
| Limiteed oxygen index | % | 28±2 |
| Glass transition temperature | ℃ | 270 |
| Melting point | ℃ | 400 |
| Temperature under long period of time | ℃ | 204 |
| Temperature under short period of time | ℃ | 240 |
| Combustion | Carbon-free droplet, flame retardent, self-extinguishing | |
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