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AMA, AMA-1 (YMY) polyester film–polyaramid fiber paper soft composite material

It is primarily used for inter‑slot, slot‑cover, and phase‑to‑phase insulation in low‑voltage motors; additionally, it can also serve as interlayer insulation in transformers or other electrical equipment.

Keywords:

insulation Material

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Composite Series

Wind power generation

Aerospace

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Product Description

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Product Description:

AMA is composed of a polyester film layer laminated with two layers of high‑temperature‑resistant polyaramid fiber paper on the top and bottom, bonded together using imported Class C adhesive. The surface A paper (domestically produced polyaramid fiber paper) is made from 100% meta‑aramid fibers and is finished by calendaring.

AMA’s soft composite material, rated H‑class (180°C), exhibits excellent mechanical properties, including tensile strength and edge tear resistance, as well as superior electrical strength. Its surface is smooth and it demonstrates strong adhesion to insulating varnishes.

AMA, when compounded with Class C adhesive, is compatible with virtually all resins and varnishes and exhibits excellent resistance to acid and alkali corrosion.

AMA is primarily used for inter-slot, slot‑cover, and phase‑to‑phase insulation in low‑voltage motors; it can also serve as interlayer insulation in transformers or other electrical equipment.

Technical Requirements for AMA Polyester Film–Polyaramid Fiber Paper Composite Materials

Serial number	Indicator Name		Unit	Indicator value
1	Nominal thickness		mm	0.13	0.15	0.18	0.20	0.25	0.30	0.35	0.45
2	Structure		thousand	2-1.2-2	2-2-2	2-3-2	2-4-2	2-6-2	2-7.5-2	2-10-2	2-14-2
3	Thickness tolerance		mm	±0.015	±0.015	±0.02	±0.02	±0.02	±0.025	±0.030	±0.040
4	Quantitative (reference value)		g/m ²	125±15	155±20	190±20	230±25	290±25	350±30	430±30	570±35
5	Stretching Intensity	Vertical	N/mm	≥70	≥150	≥160	≥180	≥220	≥270	≥320	≥350
5	Stretching Intensity	Horizontal	N/mm	≥60	≥90	≥110	≥130	≥180	≥200	≥250	≥280
6	Elongation	Vertical	%	≥10			≥12
6	Elongation	Horizontal	%	≥15			≥18
7	Breakdown Voltage	No bending	Kv	≥6	≥8	≥10	≥11	≥13	≥15	≥20	≥22
7	Breakdown Voltage	After bending	Kv	≥5	≥7	≥9	≥10	≥12	≥13	≥16	≥19
8	Adhesion (220°C ± 2°C, 2 h)			No delamination, no bubbling, and no glue flow.
9	Long-term heat resistance temperature index (TI)			≥180
10	Test Method GB/T 5591.2-2002

Note: a) When there are other special requirements, they shall be determined through consultation between the supplier and the purchaser.

　　b) During slitting and use, care should be taken to prevent edge cracking and to avoid surface scratches as well as contamination from oil, dust, and foreign particles.

　　c) Performance parameters for thickness specifications not listed in the table shall be determined in accordance with the standards applicable to the nearest comparable thickness specification.

Technical Requirements for AMA-1 Polyester Film–Polyaramid Fiber Paper Composite Material

Serial number

Indicator Name

Unit

Indicator value

Nominal thickness

0.13

0.15

0.18

0.20

0.23

0.30

0.33

0.40

Structure

thousand

1.5-2-1.5

1.5-3-1.5

1.5-4-1.5

1.5-5-1.5

1.5-6-1.5

1.5-8-1.5

1.5-10-1.5

1.5-14-1.5

Thickness tolerance

±0.013

±0.015

±0.018

±0.020

±0.023

±0.030

±0.040

Quantitative (reference value)

g/m ²

115±15

145±20

180±25

210±25

250±25

310±30

400±30

530±35

Stretching
Intensity

Vertical

N/mm

≥70

≥130

≥150

≥160

≥180

≥250

≥280

≥300

Horizontal

N/mm

≥60

≥85

≥110

≥120

≥130

≥200

≥210

≥230

Elongation

Vertical

≥10

≥12

Horizontal

≥15

≥18

Breakdown
Voltage

No bending

≥7

≥8

≥11

≥12

≥13

≥16

≥20

≥22

After bending

≥6

≥7

≥9

≥10

≥11

≥13

≥16

≥18

Adhesion (220°C ± 2°C, 2 h)

No delamination, no bubbling, and no glue flow.

Long-term heat resistance temperature index (TI)

≥180

Test Method GB/T 5591.2-2002

Note: a) When there are other special requirements, they shall be determined through consultation between the supplier and the purchaser.

　　b) During slitting and use, care should be taken to prevent edge cracking and to avoid surface scratches as well as contamination from oil, dust, and foreign particles.

　　c) Performance parameters for thickness specifications not listed in the table shall be determined in accordance with the standards applicable to the nearest comparable thickness specification.

6640 (NMN) Polyester Film–Polyaramid Fiber Paper Soft Composite Material

AHA, AHA-1 polyimide film–polyaramid fiber paper soft composite material