Polyester Based Castable Polyurethane Prepolymer for PU Elastomer

Polyester Based Castable Polyurethane Prepolymer for PU Elastomer

The same raw materials can be produced with different hardness by adjusting the A/B/C component ratio, and the raw materials need not be replaced in the hardness switching process.

Product Introduction

Adhering to high quality products and services, we will never lower our standards of the PU RUBBER SHEET, PU Rubber Rod, Two Componment Polyether Based Polyurethane Prepolyer to participate in low price competition. Brand loyalty reflects the good attitude and behavior of customers to the company's products. Our company seizes the opportunity of national policy and vigorously implements the market strategy of going out, leading the direction of high-quality development of the industry all the way. Our company has a high-quality technical team with rich experience, courage to practice and continuous innovation, and a well-trained, conscientious and responsible production and sales support team with timely service. The employees have many years of experience, and at the same time they have absorbed foreign advanced technology and craftsmanship, which greatly improves the product quality and high production efficiency, and ensures the stability and durability of the equipment. Maintenance is very convenient. Products are exported to the Middle East, Southeast Asia and other countries and regions, and are well received by users.

Three componment MDI system PU Prepolymer

1. Characteristics of MDI raw materials

The same raw materials can be produced with different hardness by adjusting the A/B/C component ratio, and the raw materials need not be replaced in the hardness switching process.

1) Need catalyst intervention

MDI three-component feedstock belongs to semi-prepolymer, and the reaction rate of-0H is less than that of-NH2. In order to obtain better physical properties and production efficiency, catalyst is needed

2) 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.

2. Advantages of the MDI three-component series

* Adjustable hardness: the same grade of three-component raw materials can be replaced by permutation and combination to produce products with different hardness.

* Environmental protection: MDI vapor pressure is lower.

* Low equipment energy consumption: The application temperature of MDI products is lower, and the equipment energy consumption is greatly reduced.

* High production efficiency: The intervention of the catalyst makes the production efficiency of MDI products higher than that of TDI products, with low energy consumption and high efficiency.


Specifications

Item

Standard

Unit

Hardness

60A

65A

70A

75A

80A

85A

90A

95A

HJ33M-A

-

g

100

100

100

100

100

100

100

100

HJ33M-B

-

g

224

184

144

124

104

84

69

56

HJ33M-C

-

g

7.25

9.05

10.85

11.75

12.65

13.55

14.20

14.80

Catalyst

-

1~3

1~3

1~3

1~3

1~3

1~3

1~3

1~3

HJ33M-A temperature

-

45-50

HJ33M-B temperature

-

65-75

HJ33M-C temperature

-

35-40

Die temperature

-

100-110

Post-maturing conditions

-

h/℃

(12-24)/100 according to product size

Gel time

-

mins

7~10

7~10

7~10

5~7

5~7

3~5

3~5

3~5

Demoulding time

-

mins

40

40

40

30

30

30

30

30

Tensile strength

GB/T528-2009

Mpa

35-37

36-38

36-38

38-40

38-43

42-47

43-48

47-52

100% modulus

GB/T528-2009

Mpa

1—2

2—3

2—3

2—4

3—5

5—7

6—8

8—10

300% modulus

GB/T528-2009

Mpa

2—4

5—8

7—9

9—12

11—14

13—16

14—17

17—20

Elongation at break

GB/T528-2009

%

551-654

532-637

522-625

522-623

481-582

432-535

422-525

425-527

Tear strength

GB/T529-2008

KN/m

36-44

42-54

52-63

61-73

71-82

81-92

92-104

104-120

Rebound

GB/T1681-2009

%

51-52

50-52

50-52

49-51

48-50

45-47

43-45

41-43

Density (25 ℃)

GB/T533-2008

g/cm2

1.21

1.21

1.22

1.22

1.22

1.23

1.24

1.24

DIN drum wear

GB/T9867-2008

mm3

≤40

≤40

≤38

≤38

≤38

≤38

≤35

≤35

Facing the market demand of different customers at home and abroad, we combine the experience of the same trade, constantly push the old and bring forth the new and perfectly realize the upgrading of series Polyester Based Castable Polyurethane Prepolymer for PU Elastomer. Our reputation comes from the rock-like quality of our products! In terms of material selection, we strictly control the quality; in the finished product inspection link, we strictly carry out the withstand voltage test in accordance with the relevant national standards, so that unqualified products are not delivered for use. Our company encourages the progress of research and development personnel, so that their academic and technical achievements are highly recognized within the group.

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