Competitive Price for 2.8d*38mm Pp Staple Fiber - SIS(Styrene-isoprene-styrene block copolymer) – Haitung

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Competitive Price for 2.8d*38mm Pp Staple Fiber - SIS(Styrene-isoprene-styrene block copolymer) – Haitung


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Competitive Price for 2.8d*38mm Pp Staple Fiber - SIS(Styrene-isoprene-styrene block copolymer) – Haitung Detail:

PROPERTIES AND APPLICATIONS

Styrene-isoprene block copolymers (SIS) are large volume, low priced commercial thermoplastic elastomers (TPE) which are produced by living ionic copolymerization by sequentially introducing styrene, 2-methyl-1,3-butadiene (isoprene), and styrene into the reactor. The styrene content typically varies between 15 and 40 percent. When cooled below the melting point, SIS’s with a low styrene content phase-separate into nano-sized polystyrene spheres imbedded in an isoprene matrix whereas an increase of the styrene content leads to cylindrical and then to lamellar structures. The hard styrene domains function as physical crosslinks which provide mechanical strength and improve the abrasion resistance, while the isoprene rubber matrix provides flexibility and toughness. The mechanical properties of SIS elastomers with a low styrene content are similar to those of vulcanized rubbers. However, unlike vulcanized rubber, SIS elastomers can be processed with equipment used for fabricating thermoplastic polymers.

SIS block copolymers are often blended with tackifier resins, oils and fillers, which allows for a versatile modification of product properties or they are added to other thermoplastic polymers to enhance their performance.

SIS copolymers are widely used in hotmelt adhesives, sealants, gasket materials, rubber bands, toy products, shoe soles and in bitumen products for road paving and roofing applications. They are also used as impact modifiers and tougheners in plastics and (structural) adhesives.

PROPERTIES AND APPLICATIONS1
PROPERTIES AND APPLICATIONS2
PROPERTIES AND APPLICATIONS3

Main Physical Properties of SIS Products

    Block

SI

Tensile

Hardness

MFR

Toluene Solution

Grade Structure Ratio

Content

Strength

(g/10min,

Viscosity at 25℃

Shore A

    S/I

%

Mpa

200℃, 5kg)

and 25%, mpa.s

     

SIS 1105

Linear

15/85

0

13

41

10

1250

SIS 1106

Linear

16/84

16.5

12

40

11

900

SIS 1209

Linear

29/71

0

15

61

10

320

SIS 1124

Linear

14/86

25

10

38

10

1200

SIS 1126

Linear

16/84

50

5

38

11

900

SIS 4019

Star-shaped

19/81

30

10

45

12

350

SIS 1125

Linear

25/75

25

10

54

12

300

SIS 1128

Linear

15/85

38

12

33

22

600

1125H

Linear

30/70

25

13

58

10-15

200-300

1108

Coupling

16/84

20

10

40

15

850

linear

             

4016

Star-shaped

18/82

75

3

44

23

500

2036

Mixed

15/85

15

10

35

10

1500


Product detail pictures:

Competitive Price for 2.8d*38mm Pp Staple Fiber -
 SIS(Styrene-isoprene-styrene block copolymer) – Haitung detail pictures

Competitive Price for 2.8d*38mm Pp Staple Fiber -
 SIS(Styrene-isoprene-styrene block copolymer) – Haitung detail pictures


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    5 Stars By Janet from kazan - 2015.02.04 14:13
    Products and services are very good, our leader is very satisfied with this procurement, it is better than we expected,
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