A-PI-3S Filled polyimide resin.

A-PI-3S is a filled polyimide resin. The powder particles are uniform, and it disperses really well. Adding just a tiny bit can significantly improve the wear resistance and creep resistance of PTFE products. It can also be used as an adhesive for making grinding wheels.

A-PI-3S
Note

Handling & Processing Notes

Important guidelines for storage, mixing, and sintering to ensure optimal performance and product quality.

01

Store it in a dry place. It's a good idea to heat treat it before using it, and make sure the moisture content is below 0.5%.

02

Use a temperature-controlled mixer and keep the process below 25°C to prevent PTFE clumping. Mix in stages at varying speeds and eliminate static buildup.

03

A-PI-33 (another variant mentioned in the data table, not the main product focus here) can be sintered without nitrogen, but you'll get some oxidation circles.

04

A-PI-34 (another variant) must be sintered in a nitrogen environment. If you don't, the finished part will be a darker color.

Data

Performance Data

Key mechanical and physical properties are shown for both thermoforming and cold forming, with competitor comparison where available.

Resin Properties

Test Features

Test Method

Unit

Test Conditions

A-PI-31

A-PI-33

A-PI-34

PTFE

Particle size D50

GB/T 19077-2016

µm

23°C

21

11

7

25

Bulk density

GB/T 16913-2008

g/cm³

23°C

0.25

0.22

0.25

0.35

10% Filled Polyimide Powder in PTFE Composite Performance (PTFE base is M-111)

Test Features

Test Method

Unit

Test Conditions

10%A-PI-31 +90%PTFE

10%A-PI-33 +90%PTFE

10%A-PI-34 +90%PTFE

100%PTFE

Forming density

GB/T 4472-201

g/cm³

23°C

2.05

2.04

2.05

2.15

Tensile Strength

GB/T 1040.1-2018

MPa

23°C

12

12

13

22

Elongation at break

GB/T 1040.1-2018

%

23°C

302

305

324

423

Friction coefficient

GB/T 3960-2016

/

2h

0.11

0.08

0.09

0.08

Mass of wear

GB/T 3960-2016

mg

2h

1.3

1.1

1

204 (20min)

The above data are product sample measurement values, not guaranteed values; All products are formed by compression, with a certain degree of directionality.