BOPI (similar to Kapton® HN)

Properties

BOPI (Biaxial Oriented Polyimide film, similar to Kapton® HN) is achieved by polycondensation of PMDA and ODA in strong polar solvents, through the process of film forming, and then being stretched and Oriented by biax during the course of imine at high temperature. BOPI film (similar to Kapton® HN) is a special kind of polyimide film. Because of biaxial orientation process, BOPI film possesses higher physical, chemical, and electrical properties. It performs successfully in low & high temperature as range of temperature from -452F(-269c) to +500F(+260c) and can be exposed at +752F(400c) in short time. It is widely used as insulation material in F~H class electric motors, electric locomotive, high temperature cables, backing or cover film of FPCB (flexible printed circuit) applications, aerospace industries and so on.

Data Form

Item	Properties		Unit	Values
Item	Properties		μm	12.5	25	30	40	50	75
1	Density		g/cm³		1.42±0.02
2	Tensile Strength	MD ≥	MPa	160	185	175	160	155	150
2	Tensile Strength	TD ≥	MPa	155	170	160	150	140	135
3	Elongation at rapture ≥		%	60
4	Shrinkage (only for reference)	150℃ 30min ≤	%	0.15
4	Shrinkage (only for reference)	400℃ 30min ≤	%	2.0
5	Breakdown Strength (48~62Hz)	Average	MV/m	210	210	190	170	160	150
5	Breakdown Strength (48~62Hz)	Individual	MV/m	190	190	180	160	135	120
6	*Surface Resistance 200℃		Ω	≥1.0×10¹³
7	*Volume Resistance 200℃		Ω·m	≥1.0×10¹⁰
8	*Dielectric Constant (48～62Hz)		---	3.5
9	*Loss Tangent (48～62Hz)		---	≤0.004

The items marked * are the inherent properties of Polyimide Film, which are not showed on the testing report for outgoing factory.

Specification

1. Width: 1000mm,or Slit into your request width of kapton tape; Thickness tolerance: +-10%
2. Min Qty: 200kgs each size in a lot. Packing: 25--50 Kgs/carton.

Note:The values noted in above technical specification are given only for our customers' reference and should not be used in writing specifications.