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Hot Air Circulation Oven Heating Oven Raw Checmial Mold Heating Post Curing Vulcanization ...

Hot Air Circulation Oven Heating Oven Raw Checmial Mold Heating Post Curing Vulcanization ...

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 have established a good long-term cooperative relationship and formed a good reputation in the Polyurethane Rubber Parts, Zinc Borate 2335 80, 3 Crystal Water Zinc Borate industry. Our entrepreneurial spirit is loyalty and unity, innovation and progress, pragmatism and efficiency. The company has always adhered to the quality of survival, to the management of efficiency, we take the brand as the guidance.

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

Our company with its own unique professional and technical groups, relying on strong technical resources, and constantly develop new Hot Air Circulation Oven Heating Oven Raw Checmial Mold Heating Post Curing Vulcanization .... We adhere to the relevant diversification strategy with the enhancement of the competitiveness of our main business as the core, and accelerate the pace of corporate development. In today's globalized economy and highly developed information technology, which brings new opportunities and challenges to our company, we will continue to improve the management level of our company and continuously improve the core competitiveness of our products.

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