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Quick Details

  • Place of Origin: China (Mainland)
  • Type: Synthetic Resin and Plastics, Synthetic Rubbers
  • Brand Name: DHK
  • prepolymer: Polyester/TDI base
  • Apperance: Light yellow liquid, long storing in low temperature is solid

Packaging & Delivery

Packaging Details 20kg/drum or 200kgs/drum
Delivery Time within 7days afte confirming order

Specifications

polyurethane prepolymer applies to make rods, wheels, sealing rings ,screen plates and other polyurethane elastomer wares.

Polyester/TDI System - prepolymer

 

Hardness from Shore A70-Shore D80. LIgh yellow liquid ,but normally for long time in low termperature could be solid.

 

Type

 

HK70A

 

HK80A

 

HK85A

 

HK90A

 

HK92A

 

HK921A

 

HK94A

 

HK96A

 

 

NCO content %

2.1±0.

 

1

 

3.0±0.1

 

3.6±0.1

 

4.0±0.2

 

4.3±0.2

 

4.5±0.2

 

4.9±0.2

 

6.0±0.2

 

Appearance at   20°C

 

White

 

solid

 

White

 

solid

 

White

 

solid

 

White

 

solid

 

White

 

solid

 

White

 

solid

 

White

 

solid

 

White

 

solid

MOCA/g

 

(100g prepolymer)

 

 

6

 

 

8.6

 

 

10.5

 

 

11.7

 

 

12.5

 

 

13

 

 

14.5

 

 

17.5

Viscosity(85°C) /mPa·s

3800

2500

2000

1800

1400

1300

900

1200

Mixing  Temperature  /°C

(Prepolymer/MOCA)

90/12

 

0

 

 

85/120

 

 

80/120

 

 

80/120

 

 

80/120

 

 

80/120

 

 

75/120

 

 

75/110

Gel time/min

9

5

4

4

4

3

3

2

Post cure   time(100°C)/h

10

10

10

10

10

10

10

10

Hardness(Shore A)

72±2

80±2

85±1

90±1

92±1

92±1

94±1

96(52D)

 

 

l       Application: it can be used to make rods,wheel,sealing ring,sieve palste and other polyurethance elastomers

l       Characteristics:The wares enjous excellents abrasion resistance,good oil resistance,and nice mechanical preoperty.The ware can be made into colorful by adding color pigment into Pu prepolymer

l       Operation Points:  After vacuum degassing at 80-85°C,blending with melted MOCA,,degassing and then casting,vulcanization molding.This is apply to manual or casting machines

l       Storage: Store in a cool and dry place,If you can’t use it up at a  time,filling nitrogtn gas and then sealing it. The storage time of original packing is 6months

l       Packing :20kgs/drum or 200kg/drum

 

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China (Mainland) | Manufacturer, Trading Company
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