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Polyurethane PU Elastomer Pouring Machine Suppliers Injection Casting Equipment

Polyurethane PU Elastomer Pouring Machine Suppliers Injection Casting Equipment

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.

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Product Introduction

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Quazi MDI Three componment casting PU

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.Because MDI has excellent symmetry and two benzene rings in molecular structure, MDI products can endow products with better comprehensive physical properties. At the same time, because of chemical reaction factors, the product characteristics are also different from TDI.

(1) Higher resiliency

(2) Higher shrinkage rate

(3) Aging resistance and improved color stability

(4) Decreasd temperature resistance

2. 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.

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. Storage conditions of raw materials

Storage requirements

Raw materials

Time

Storage condition

Shelf life

HJ33M-A

May 1-October 1 (spring and summer)

Below 30 ℃, keep away from light and dry, and it is recommended to store it in cold storage

6 months after receipt > 30 ℃ storage time < 1 month

October 1-May 1 (autumn and winter)

Under 30 ℃, keep away from light and dry, without other special requirements

6 months after receipt of the goods

HJ33M-B

Year-round

Store at room temperature, away from light and dry

2 years after receipt of goods

HJ33M-C

Year-round

Store at room temperature, away from light and dry

2 years after receipt of goods

Catalyst

Year-round

Store at room temperature, away from light and dry

2 years after receipt of goods


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

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