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Polyurethane Elastomer Machine for Sifter /PU Elastomer Machine for Sifter /Polyurethane ...

Polyurethane Elastomer Machine for Sifter /PU Elastomer Machine for Sifter /Polyurethane ...

They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.

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Product Introduction

We will insist on producing a wide variety of Anhydrous Zinc Borate, Zinc Borate 2335 80, Flame Retardent Zinc Borate with high standards and wholeheartedly serving customers as always. Since its establishment, our company has been able to grow steadily with a steady pace, all of which lies in the implementation of the concept of 'carrying forward the main theme of quality and faithful service' from top to bottom of the enterprise. We always stick to it and dare not to slack off and persevere. We always insist that providing value to customers is the reason for our existence, and constantly improve the ability to create value for users. We work together with our partners to meet the challenges of innovation from economic, environmental and social sustainability. We always uphold integrity and strive for the full trust of the government, suppliers, customers, and even the whole society.

PTMEG based Casting Polyurethane prepolymer

1. PTMEG based polyurethane prepolymer is the higher level of Polyether prepolymer, they are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up. They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.

2. Specifications,Application and operation details.


PTMEG/TDI system Casting Polyurethane prepolymer

Item

Type

HJ-2185

HJ-2190

HJ-2195

HJ-2197

NCO% Content

3.5±0.2

4.2±0.2

6.0±0.2

6.5±0.2

Density 25℃/(g/cm³)

1.11

1.11

1.12

1.12

Viscosity 80℃/mpa·s

900-1100

800-1000

700-900

600-800

Appearance at 25℃

Colorless transparent liquid

Mix Temperature ℃

Prepolymer /Moca

85℃/115℃

80℃/115℃

75℃/115℃

75℃/115℃

Gel Time /min

13-18

10-15

6-10

3-5

Vulcanization Time (h)

25-16

25-16

25-16

25-16

Physical Properties

Hardness (Shore A)

85±2

90±2

95±2

97±2

Tensile Strength (Mpa)

25-28

33-38

38-45

40-46

100% Modulus (Mpa)

11-12

14-16

16-18

18-20

300% Modulus (Mpa)

18-20

28-30

38-42

40-43

Elongation at Break (%)

360-420

350-400

280-350

250-300

Tear Strength (KN/m)

60-65

75-85

90-100

95-105

Compression permanent deformation %

4-6

4-6

2-4

2-4

DIN Abrasion loss（mm³）

≤45

≤40

≤40

≤40

Resilience %/25℃

40-45

35-40

28-32

26-30

- Product application : PU Rollers, casters, seals, pistons, classification screens, flotation machine impellers, forklift tires, molds, slurry pump linings and other products.

- Operation details:After vacuum degasing at 75-85 ℃, the prepolymer is mixed with melted MOCA for casting and vulcanization. It is suitable for manual and mechanical operation.

- Storage:Store in a cool and dry place and use up as soon as possible after opening; If it cannot be used up at one time, it shall be sealed with nitrogen; The second opening needs to be used for defoaming, and the original storage period is six months.

- Packing:20kg or 200kg iron drum

We independently research and develop on the basis of introducing and digesting foreign advanced technology, constantly innovate and forge ahead, and strive to create a domestic first-class Polyurethane Elastomer Machine for Sifter /PU Elastomer Machine for Sifter /Polyurethane ... brand. We take 'professionalism, integrity, trust' as the central value, and our products have been praised and affirmed by all sectors of society, and have won excellent reputation for the company. We have made our contribution to the development and modernization of the country through continuous entrepreneurship and innovation and the pursuit of excellence.

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