T219 Laminated wave sheet
This sheet is made from alkali-free glass cloth and special gooey under thermal pressure. Its temperature classification is F, and is suitable for the insulation in the slots of motor stator.

Dimensions:
1. Thickness: 0.9mm
2. Wave height: 1.8mm
3. Wave distance: 30mm
4. Wave radius: 30mm

Specifications:
1. Appearance: No crack, no delamination
2. Initial deformation stress (σ 1): ≥ 1 MPa
3. Wave crest variance ratio after thermal press treatment (K1): ≤ 25%
4. Stress variance ratio after thermal press treatment (K2): ≤ 25%
5. Wave crest variance ratio after aging (K3): ≤ 15%
6. Stress variance ratio after aging (K4): ≤ 25%
7. Density: 1.8~2.0 g/cm3
8. Glass cloth content: 70%± 5%

Testing and calculating method of stress and deformation:
The workpiece is prepared at 20× 150mm, with 5 full waves included and cut at wave crests.
1. σ 1=P/S, where P is the pressure (N) to press the workpiece wave crest to the 20% of its initial height between two plates, while S is the respective projective area (mm2) of the workpiece.
2. K1=(a-a1)/a, where a is the initial wave height, while a1 is the wave height after thermal press treatment(Press the workpiece to plan, and keep it for 24 hours at 130± 2oC, then cool it down to room temperature).
3. K2=(σ 1-σ 2)/σ 2, where σ 2 is the 20% deformation stress after thermal press treatment, which is tested in the same way asσ 1.
4. K3 and K4 are corresponding to K1 and K2 respectively after aging ( Press the workpiece to plan, and keep 168 hours at 120± 2oC, then cool down to room temperature and take out).

Product standard: GB/T1305

Storage: 12 months at room temperature

Package: 480× 480mm/piece