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Quasi-MDI polyurethane prepolymer system

Quasi-MDI polyurethane prepolymer system

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Product Details:

Place of Origin: Shandong
Brand Name: ExceedChem
Certification: ISO9001:2008

Payment & Shipping Terms:

Minimum Order Quantity: 1000kgs
Price: FOB Qingdao USD3.1-3.5/kg
Packaging Details: 20kg/drum or 200kg/drum
Delivery Time: within two weeks after confirming the order
Payment Terms: TT or LC at sight
Supply Ability: 100mt per month
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Detailed Product Description

                                    Quasi-MDI Polyester Polyurethane Prepolymer System

1. Introduction: This polyurethane prepolymer consists of three components A/B/C. Component A is Quasi-MDI polyester prepolymer which ended up with isocynate, Component B is polyester polyol, Component C is 1,4BDO. 

2. Characteristic: The final product enjoys good anti resistance ability, good rebound. And the hardness can be adjusted by the different ratios. The color can be adjusted by pigment.

3. Application: This material is used to produce polyurethane sieves, pu rollers and other elastomers.

4. Storage: Keep the material in cool and dry place. Please use it up once drum is open. Or fill nitrogen and seal the drums for keeping the rest material. The shelf life in original package is 12 months.

5. Package: 20kg or 200kg per drum.

6. Properties

A

Type 

Quasi-MDI Polyester Prepolymer

Appearance

Transparent liquid

Viscosity (55℃)mPa·s

680

B

Type

Polyester Polyol

Appearance

Transparent liquid

Viscosity (60℃)mPa·s

800

C

Type

1,4 BDO

Appearance

Transparent liquid

Viscosity (50℃)mPa·s

30

A/B/C(ratio, by weight)

100/35/11.8

100/50/11.2

100/65/10.6

100/80/10

100/90/9.3

100/110/8.6

Catalyst/ weight of A+B+C %

0.1%-0.2%

Operation temperature/ ℃

A/B/C=55℃/60℃/50℃

Gel time/min

2-6, can be adjusted by catalyst

Post cure time(100℃)/h

At least 10 hours

Product Appearance

White solid

White solid

White solid

White solid

White solid

Transparent liquid

Hardness/Shore A

94±2

90±2

85±2

80±2

75±2

70±2

Tensile strength/MPa

53

52

51

48

45

40

Elongation at break /%

570

600

610

620

630

640

100% modulus/Mpa

8.9

6.1

4.5

3.8

3.0

2.3

300% modulus/Mpa

16.2

11.2

8.8

6.9

6.0

4.9

Tear strength (with nick)/

(KN/m)

125

112

98

82

73

65

Tear strength (without nick)/ (KN/m)

47

38

32

26

23

21

Rebound 30℃/%

46

49

53

54

56

58

DIN abrasion /mm3

43

38

36

35

32

29

Specific gravity (g/cm3)

1.21-1.23

*Gel time can be adjusted by catalyst.

Quasi-MDI polyurethane prepolymer system

 

Contact Details
Qingdao Exceed Fine Chemicals Co.,Ltd

Contact Person: Mr. louis.liu

Tel: 86-532-82693198

Fax: 86-532-82693196

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