PRODUCT AND SERVICE

Strong research and development and production capacity in textile auxiliaries, polyurethane waterproofing additives and other materials.

Polyurethane/Polyurea
Product Details

PPG Series Polyurethane Prepolymer

Application: it can be used to make rods,caster wheel,rollers,sealing rings,seive plates and other polyuretane elastomer.

Characteristics: the end of products have good abrasion resistance.water resistance,germ proof,excellent mechanical preperities,color regulating by adding pigment.

Operation Points: After the performed polymer vacuum degassing in 80-85℃,blending with melted MOCA,Vacuum drgassing casting,vulcanization moulding.It is apply to manual or casting machine

Type

 

DHK1270

 

DHK1278

 

DHK1280

 

DHK1285

 

DHK1290

 

DHK1295

 

DHK1298

 

DHK1260

NCO content%

                 

8.0±0.2

 

8.5±0.2

 

4.0±0.1

 

4.5±0.2

 

5.0±0.2

 

6.2±0.2

 

6.5±0.2

 

7.0±0.2

MOCA (g/ 100g )

 

23

 

24.0

 

11.5

 

13

 

14.5

 

18

 

19

 

20.3

Viscosity   (mPa·s)

 

450

 

400

 

350

 

400

 

450

 

240

 

300

 

400

Apperance

Colorless Liquid and Light amber liquid

Mixing Temperature

 

Prepolymer/MOCA

 

 

75/110

 

 

75/110

 

 

80/120

 

 

80/120

 

 

80/120

 

 

75/120

 

 

75/120

 

 

75/120

Gel Time(min)

 

2

 

2

 

4.5

 

4

 

3.5

 

3

 

2.5

 

2

Post cureTime

(h/100 )

 

 

10

 

 

10

 

 

10

 

 

10

 

 

10

 

 

10

 

 

10

 

 

10

 

HardnessShore A

 

70±2(D)

 

78±2(D)

 

83±2

 

86±2

 

90±2

 

94±2

 

97±2

53D

 

60D±2

100%Modulus (MPa)

23.2

32.5

5.4

5.9

8.9

9.2

15.2

15.8

300%Modulus (MPa)

/

/

10.0

10.3

14.6

16.8

24.6

23

Tensile strength(MPa)

39

42

19

21

31

32

34

35

Elongation at break(%)

 

230

 

180

 

500

 

480

 

460

 

450

 

440

 

420

Tear strength (without nick)/KN/m

 

123

 

145

 

53

 

57

 

73

 

78

 

95

 

120

Tear strength        (with Nick)/ KN/m

25

32

 

15

 

17

 

25

 

26

 

35

 

38

Storage:  Store in a cool and dry place,If you can’t use it up at a  time,filling nitrogtn gas and then sealing it. The storage time of original packing is 6months

Packing : 20kgs/drum or 200kg/drum

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Qingdao Hengke Fine Chemicals Co.,Ltd