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Polyether Based Casting Polyurethane Prepolymer

Delivery term:The date of payment from buyers deliver within days
  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Shandong

  • Validity to:

    Long-term effective

  • Last update:

    2021-10-12 05:09

  • Browse the number:

    341

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Zibo Hengjiu PU Technology Co., Ltd
Contactaixin:

Contactaixin:

hengjiujuanzhi(Mr.)  

Email:

 telephone:

 phone:
Area:

Shandong

 Address:

No.001 Fengming Road, Guoli Town, Huantai County, Zibo City, Shandong Province, China
Website:

http://www.hengjiucpu.com/ http://hengjiujuanzhi.yz-bh.com/

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Polyether based Casting Polyurethane prepolymer

1.Polyether based polyurethane prepolymer are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up. They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.

2. Specifications,Application and operation details


PPG/TDI system Casting Polyurethane prepolymer

Item

Type

HJ-1880

HJ-1885

HJ-1890

HJ-1895

NCO% Content

3.7±0.2

4.0±0.2

5.0±0.2

6.2±0.2

Density 25℃/(g/cm³)

1.10

1.10

1.10

1.10

Viscosity 80℃/mpa·s

500-700

500-700

400-600

150-200

Appearance at 25℃

Colorless transparent liquid

Mix Temperature ℃

Prepolymer /Moca

80℃/115℃

80℃/115℃

75℃/115℃

75℃/115℃

Gel Time /min

8-12

6-8

3-5

2-4

Vulcanization Time (h)

25-16

25-16

25-16

25-16

Physical Properties

Hardness (Shore A)

80±2

85±2

90±2

95±2

Tensile Strength (Mpa)

12-15

14-18

20-24

22-26

100% Modulus (Mpa)

7-8

8-9

10-11

11-12

300% Modulus (Mpa)

--

11-12

16-17

20-21

Elongation at Break (%)

260-320

300-400

340-420

350-420

Tear Strength (KN/m)

50-55

65-75

80-90

85-95

Compression permanent deformation %

6-8

6-8

4-6

4-6

DIN Abrasion loss（mm³）

≤160

≤150

≤140

≤130

Resilience %/25℃

20-24

19-22

18-20

16-18

- Product application: Rod and bar, sheet and plate, seal, drag roller, caster, grinder lining, pipe lining, miscellaneous parts and other products.

- Operation details: After vacuum degasing at 75-85 ℃, the prepolymer is mixed with melted MOCA for casting and vulcanization. It is suitable for manual and mechanical operation.

- Storage: Store in a cool and dry place and use up as soon as possible after opening; If it cannot be used up at one time, it shall be sealed with nitrogen; The second opening needs to be used for defoaming, and the original storage period is six months.

- Packing: 20kg or 200kg iron drum

http://www.hengjiucpu.com/

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