Aramid Paper Insulation

Description

Long-lasting thermal stability. The most prominent feature of aramid fiber 1313 is high temperature resistance. It can be used for a long time at 220°C without aging. Its electrical and mechanical properties can be maintained for 10 years, and its dimensional stability is excellent. At about 250°C, its The thermal shrinkage rate is only 1%; it will not shrink, embrittle, soften or melt when exposed to high temperature of 300°C for a short time; it will not start to decompose at a strong temperature exceeding 370°C; it will not start to carbonize until around 400°C - so high Excellent thermal stability is rare in organic heat-resistant fibers.
Impressive flame retardancy. The percentage of oxygen volume required for a material to burn in air is called the limiting oxygen index. The larger the limiting oxygen index, the better its flame retardancy. Usually the oxygen content in the air is 21%, while the limiting oxygen index of aramid 1313 is greater than 29%, which is a flame retardant fiber, so it will not burn in the air, nor support combustion, and has self-extinguishing properties. This inherent characteristic derived from its own molecular structure makes aramid 1313 permanently flame retardant, so it has the reputation of "fireproof fiber".
Excellent electrical insulation. The dielectric constant of aramid fiber 1313 is very low, and its inherent dielectric strength enables it to maintain excellent electrical insulation under high temperature, low temperature, and high humidity conditions. The breakdown voltage of insulating paper prepared with it can reach 40KV/mm, It is recognized as the best insulating material in the world.
Excellent chemical stability. The chemical structure of aramid 1313 is extremely stable, and it can resist the corrosion of most high-concentration inorganic acids and other chemicals, as well as resist hydrolysis and steam corrosion.
Excellent mechanical properties. Aramid 1313 is a flexible polymer material. Its low stiffness and high elongation characteristics make it have the same spinnability as ordinary fibers. It can be processed into various fabrics or non-woven fabrics with conventional spinning machines, and it is wear-resistant and tear-resistant. Its scope of application very broad.
Super radiation resistance. Aramid 1313 has excellent resistance to α, β, χ rays and ultraviolet radiation. With 50Kv x-ray radiation for 100 hours, the fiber strength remains 73% of the original, while the polyester or nylon at this time has already become powder.

Item		Unit	Requirement
Nominal thickness		mm	0.15	0.17	0.19	0.22	0.24	0.26	0.31	0.37	0.41
Thickness tolerance		mm	±0.022				±0.024	±0.026	±0.031	±0.037	±0.041
Grammage		g/m2	150±18	170±20	200±24	230±27	270±32	305±36	360±43	450±54	515±61
Film nominal thickness		um	36	50	75	100	125	150	188	250	300
Tensile strength	MD no bending	N/10mm	≥150	≥150	≥170	≥190	≥220	≥240	≥270	≥330	≥370


	MD after bending		≥90	≥90	≥105	≥120	≥150	≥180	≥200	≥300	≥330
	TD no bending		≥80	≥90	≥100	≥110	≥130	≥170	≥200	≥250	≥300
	TD after bending		≥70	≥70	≥90	≥100	≥120	≥150	≥150	≥200	≥230
Elongation	MD	%	≥15				≥3
（%）
	TD		≥20					≥10
Breakdown voltage	No bending		≥7	≥8	≥11	≥12	≥14	≥16	≥19	≥23	≥25
		KV
	After bending		≥6	≥7	≥9	≥10	≥12	≥14	≥15	≥18	≥19
Delamination		—	No Delamination, no bubble or other defects
Heat affected（200±2℃） 10min			No Delamination, no bubble, no adhesive flow
Long-term heat resistance			≥180
（temperature index TI）
Weight and area conversion		m2/Kg	7.23	6.33	5.18	4.39	3.8	3.36	2.85	2.28	1.97