a Polyurethane Machine/PU Injection Casting Machine/Rubber Parts Buffer Bumper Machine

a Polyurethane Machine/PU Injection Casting Machine/Rubber Parts Buffer Bumper Machine

Under conventional hardness, TDI and MDI products have no great difference in strength index, but will have obvious improvement in elasticity and wear resistance.

Product Introduction

We are willing to provide high quality Casting Polyurethane Elastomer, Zinc Borate 2335 80, Cold Casting Polyurethane Prepolyer and sacred services to meet the needs of customers. With high-quality products and perfect services, our company has won the trust and attention of consumers. It is proved by users that the product has stable performance and good use effect, and is deeply welcomed and praised. Our company has gathered a group of energetic and innovative talents. Guided by the needs of customers, we strengthen the investment in scientific research and constantly shape the core competitiveness of the enterprise. We actively promote the human resource strategy and cultivate the core competitiveness of our company.

Characteristics of MDI raw materials

1. Under conventional hardness, TDI and MDI products have no great difference in strength index, but will have obvious improvement in elasticity and wear resistance.

MDI products will have better wear life and softer hand feeling.

Indicators

Polyester TDI

Polyester MDI

Hardness (shA)

90

90

Tensile strength (Mpa)

51

48

Elongation (%)

577

546

Tear strength (KN/m)

107

102

Rebound (%)

30

40

Wear (mm3)

50

38

2.Fast reaction rate

With high NCO content and catalyst intervention, the reaction rate of MDI feedstock is 1-2 times faster than that of TDI series feedstock.

3.Environmental protection

The vapor pressure of MDI is much lower than that of TDI, and it has aromatic odor and little toxicity in the production process, so MDI is a new material that meets the needs of environmental protection

4.Low application temperature of materials

Because of the high activity of MDI, the application temperature of MDI raw materials is much lower than that of TDI series raw materials in order to prevent the degradation of physical properties of final products caused by self-polymerization of raw material.

5. Because of the high resilience and flexibility, MDI series products are much better than TDI series products in the application effect of sieve plate. The improvement of elasticity is helpful to improve the impact wear resistance and self-cleaning effect of products.

Type

HJ2285M

HJ2290M

HJ2295M

HJ2385M

HJ2390M

HJ2395M

NCO content /%

6.0±0.2

7.5±0.2

8.8±0.2

6.0±0.2

7.5±0.2

8.8±0.2

Appearance in 20℃

PTMEG type,white solid

Polyester type,white solid

1,4-BD dosage (100gPUP )/g

6.2

7.7

9.1

6.2

7.7

9.1

Viscosity(85℃)/mPa·s

1300-1500

900-1100

750-850

1300-1500

1100-1300

900-1100

Mixing temperature/℃ (PUP/1,4BD)

85/40

85/40

80/40

85/40

85/40

80/40

Catalyst addition dosage (1000gPUP)/g

Catalyst addition dosage (1000gPUP)/g

Gel time /min

8—10

5—7

4—6

8—10

5—7

4—6

Vulcanization Time (100-110℃)/h

24-48

24-48

24-48

24-48

24-48

24-48

Hardness(shore A)

85±2

90±2

95±2

85±2

90±2

95±2

Tensile strength/MPa

34-39

37-42

43-48

42-47

48-53

52-57

100% Modulus /MPa

4—6

5—8

10—14

3—6

8—10

10—13

300%Modulus /MPa

10—15

13—18

20—30

8—14

16—20

20—24

Elongation at break/ %

360-460

560-660

440-540

530-630

580-680

480-580

Tear strength(KN/m)

60-70

95-105

105-115

75-85

105-115

115-125

Rebound/ %

48-50

46-48

45-47

45-47

42-45

40-43

Specific gravity(25℃)(g/ cm3)

1.11

1.11

1.12

1.23

1.23

1.24

DIN Abrasion loss /mm³

≤38

≤35

≤32

≤38

≤38

≤36

Our employees regard the company as their home. They put forward excellent new suggestions to improve the quality of a Polyurethane Machine/PU Injection Casting Machine/Rubber Parts Buffer Bumper Machine. Our company constantly improves the service quality in the service process and improves the service methods. High-quality products and meeting customer needs are the consistent pursuit of our company. We hope to have the opportunity to cooperate sincerely with you, and wish to have the opportunity to be your reliable friend!

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