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PET Preform Mould Insulator

Home Polyimide (PI) PET Preform Mould Insulator

PET Preform Mould Insulator

The nozzle tip insulator is made of Polyimide material (Vespel SP-1 Equivalet), used for injection molding thermoplastic such as PET bottle preforms.  As thermal insulation of molten plastic to prevent freeze-off of the plastic while awaiting injection inside the hot runner system, and allowing easy color transfer between production batches, reducing downtime of the tool.

Polyimide (PI)2019-12-06s708

Description

Polyimide(PI), Vespel SP-1 Equivalent

Polyimide is a non melting high temperature polymer.  Strength, dimensional stability, and creep resistance remain high even at temperatures above 260°C. Low wear rates combined with the ability to work under unlubricated conditions and high pV-rates makes it the ideal material for challenging friction and wear applications, extending lifetime and reducing maintenance costs.  Its high purity and low outgassing are needed for applications in the vacuum, space and semiconductor industry.

 

Properties

  • High strength, modulus and stiffness also at high temperatures over 260 °C
  • Excellent dimensional stability to 350°C continuous use. (short term up to 400°C)
  • Superior wear and creep resistance
  • Exceptional performance under load and at high temperatures
  • Low thermal and electrical conductivity
  • Low coefficient of friction
  • Good maichnability

Applications

  • Semiconductor Industry: semiconductor manufacturing process equipment with high purity, high resistance. Such as wafer clamping rings, wafer carries, wafer guides, wafer tips, test sockets, die-pickup collets, vacuum pads, bearings, centering pins, alignment pins, insulators, screws & fasteners
  • Automotive industry: thrust washer or piston rings in transmission and pumps replacing traditional metals
  • Aero space industry: Jet engine parts such as pads, bumpers, seals and bearings
  • Industrial machinery: nozzle tip insulators for hot runner nozzles used for injection molding of thermoplastic products such as PET preforms, PET caps

 

POLYIMIDE (PI) TECHNICAL DATA SHEET
Properties Temperature Test Method Unit Typical Value

 Physical Properties

Color – – – Brown
Density – GB1033 g/cm³ 1.38-1.42

Mechanical Properties

 

Tensile Strength

23℃  

GB/T1040-2006

 

Mpa

96.3
260℃ 49.4
 

Elongation at Break

23℃  

GB/T1040-2006

 

%

6.3
260℃ –
 

Tensile Modulus

23℃  

GB/T1040-2006

 

Mpa

3140
260℃ –
 

Flexural Strength

23℃  

GB/T1040-2000

 

Mpa

154
260℃ 85.6
 

Flexural Modulus

23℃  

GB/T1040-2000

 

Mpa

2990
260℃ 1640
 

Compress Strength

23℃  

GB/T1040-2000

 

Mpa

138.6
260℃ 83.8
 

Compress Modulus

23℃  

GB/T1040-2000

 

Mpa

1620
260℃ 1410
 

lzod Unotched Impact Strength

23℃  

GB/T16420-1996

 

Kj/m2

83.2
260℃ –

Thermal Properties

Glass Transition Temperature DMA ℃ 396
5% Weight Loss Temperature TGA ℃ 579
The Lowest Working Temperature – ℃ -248
Heat Deflection Temperature GB/T 1634.2 ℃ 430

Electrical Properties

Surface Resistvity GB1410 Ω 1014
Volume Resistvity GB1410 Ω.cm 1015
Dielectric Strength – KV/mm 22
Dielectric Constant – – 3.6

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